Changed lfs_dir_read to return 0 on success

Before:
If an entry is found, lfs_dir_read returns 1
If at end of directory, lfs_dir_read returns 0

After:
If an entry is found, lfs_dir_read returns 0
If at end of directory, lfs_dir_read returns LFS_ERR_NOENT

---

lfs_dir_read is a bit of an odd function. It's supposed to match
lfs_file_read, but instead of reading bytes, it reads directory
entries.

Its POSIX equivalent, readdir, indicates whether or not we reached
the end of the directory by returning a NULL pointer:

struct dirent *readdir(DIR *dirp);

But this API needed to change for littlefs, since we don't use errno,
instead returning errors as signed integers through all API functions,
including lfs_dir_read.  So, in an effort to match lfs_file_read,
lfs_dir_read returned the "number" of directory entries read, limited
to either 0 or 1.

Perhaps unsurprisingly, this turned out to be confusing to users,
and a better API was proposed hathach to instead return either 0
or LFS_ERR_NOENT, an error which can't occur for other reasons in
lfs_dir_read.

Suggested by hathach

.travis.yml

@@ -208,21 +208,28 @@ jobs:
     script:
       - make test TFLAGS+="-k --valgrind"
 
-  # test minimal compilation using static configs
+  # test compilation in read-only mode
   - stage: test
     env:
-      - NAME=littlefs-minimal
+      - NAME=littlefs-readonly
       - CC="arm-linux-gnueabi-gcc --static -mthumb"
-      - CFLAGS="-Werror
-            -DLFS_STATICCFG -DLFS_FILE_STATICCFG
-            -DLFS_READ_SIZE=16
-            -DLFS_PROG_SIZE=16
-            -DLFS_BLOCK_SIZE=512
-            -DLFS_BLOCK_COUNT=1024
-            -DLFS_BLOCK_CYCLES=-1
-            -DLFS_CACHE_SIZE=64
-            -DLFS_LOOKAHEAD_SIZE=16
-            -DLFS_NO_ASSERT -DLFS_NO_DEBUG -DLFS_NO_WARN -DLFS_NO_ERROR"
+      - CFLAGS="-Werror -DLFS_READONLY"
+    if: branch !~ -prefix$
+    install:
+      - *install-common
+      - sudo apt-get install
+            gcc-arm-linux-gnueabi
+            libc6-dev-armel-cross
+      - arm-linux-gnueabi-gcc --version
+    # report-size will compile littlefs and report the size
+    script: [*report-size]
+
+  # test compilation in thread-safe mode
+  - stage: test
+    env:
+      - NAME=littlefs-threadsafe
+      - CC="arm-linux-gnueabi-gcc --static -mthumb"
+      - CFLAGS="-Werror -DLFS_THREADSAFE"
     if: branch !~ -prefix$
     install:
       - *install-common

README.md

@@ -39,7 +39,7 @@ lfs_t lfs;
 lfs_file_t file;
 
 // configuration of the filesystem is provided by this struct
-const struct lfs_cfg cfg = {
+const struct lfs_config cfg = {
     // block device operations
     .read  = user_provided_block_device_read,
     .prog  = user_provided_block_device_prog,
@@ -221,6 +221,11 @@ License Identifiers that are here available: http://spdx.org/licenses/
 - [littlefs-js] - A javascript wrapper for littlefs. I'm not sure why you would
   want this, but it is handy for demos.  You can see it in action
   [here][littlefs-js-demo].
+  
+- [littlefs-python] - A Python wrapper for littlefs. The project allows you
+  to create images of the filesystem on your PC. Check if littlefs will fit
+  your needs, create images for a later download to the target memory or
+  inspect the content of a binary image of the target memory.
 
 - [mklfs] - A command line tool built by the [Lua RTOS] guys for making
   littlefs images from a host PC. Supports Windows, Mac OS, and Linux.
@@ -250,3 +255,4 @@ License Identifiers that are here available: http://spdx.org/licenses/
 [LittleFileSystem]: https://os.mbed.com/docs/mbed-os/v5.12/apis/littlefilesystem.html
 [SPIFFS]: https://github.com/pellepl/spiffs
 [Dhara]: https://github.com/dlbeer/dhara
+[littlefs-python]: https://pypi.org/project/littlefs-python/

bd/lfs_filebd.c

@@ -10,18 +10,21 @@
 #include <unistd.h>
 #include <errno.h>
 
-int lfs_filebd_createcfg(lfs_filebd_t *bd, const char *path,
-        const struct lfs_filebd_cfg *cfg) {
-    LFS_FILEBD_TRACE("lfs_filebd_createcfg(%p, \"%s\", %p {"
+int lfs_filebd_createcfg(const struct lfs_config *cfg, const char *path,
+        const struct lfs_filebd_config *bdcfg) {
+    LFS_FILEBD_TRACE("lfs_filebd_createcfg(%p {.context=%p, "
+                ".read=%p, .prog=%p, .erase=%p, .sync=%p, "
                 ".read_size=%"PRIu32", .prog_size=%"PRIu32", "
-                ".erase_size=%"PRIu32", .erase_count=%"PRIu32", "
-                ".erase_value=%"PRId32"})",
-            (void*)bd, path, (void*)cfg,
-            cfg->read_size, cfg->prog_size, cfg->erase_size, cfg->erase_count,
-            cfg->erase_value);
-
-    // copy over config
-    bd->cfg = *cfg;
+                ".block_size=%"PRIu32", .block_count=%"PRIu32"}, "
+                "\"%s\", "
+                "%p {.erase_value=%"PRId32"})",
+            (void*)cfg, cfg->context,
+            (void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog,
+            (void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync,
+            cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count,
+            path, (void*)bdcfg, bdcfg->erase_value);
+    lfs_filebd_t *bd = cfg->context;
+    bd->cfg = bdcfg;
 
     // open file
     bd->fd = open(path, O_RDWR | O_CREAT, 0666);
@@ -35,8 +38,26 @@ int lfs_filebd_createcfg(lfs_filebd_t *bd, const char *path,
     return 0;
 }
 
-int lfs_filebd_destroy(lfs_filebd_t *bd) {
-    LFS_FILEBD_TRACE("lfs_filebd_destroy(%p)", (void*)bd);
+int lfs_filebd_create(const struct lfs_config *cfg, const char *path) {
+    LFS_FILEBD_TRACE("lfs_filebd_create(%p {.context=%p, "
+                ".read=%p, .prog=%p, .erase=%p, .sync=%p, "
+                ".read_size=%"PRIu32", .prog_size=%"PRIu32", "
+                ".block_size=%"PRIu32", .block_count=%"PRIu32"}, "
+                "\"%s\")",
+            (void*)cfg, cfg->context,
+            (void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog,
+            (void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync,
+            cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count,
+            path);
+    static const struct lfs_filebd_config defaults = {.erase_value=-1};
+    int err = lfs_filebd_createcfg(cfg, path, &defaults);
+    LFS_FILEBD_TRACE("lfs_filebd_create -> %d", err);
+    return err;
+}
+
+int lfs_filebd_destroy(const struct lfs_config *cfg) {
+    LFS_FILEBD_TRACE("lfs_filebd_destroy(%p)", (void*)cfg);
+    lfs_filebd_t *bd = cfg->context;
     int err = close(bd->fd);
     if (err < 0) {
         err = -errno;
@@ -47,25 +68,26 @@ int lfs_filebd_destroy(lfs_filebd_t *bd) {
     return 0;
 }
 
-int lfs_filebd_read(lfs_filebd_t *bd, lfs_block_t block,
+int lfs_filebd_read(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, void *buffer, lfs_size_t size) {
     LFS_FILEBD_TRACE("lfs_filebd_read(%p, "
                 "0x%"PRIx32", %"PRIu32", %p, %"PRIu32")",
-            (void*)bd, block, off, buffer, size);
+            (void*)cfg, block, off, buffer, size);
+    lfs_filebd_t *bd = cfg->context;
 
     // check if read is valid
-    LFS_ASSERT(off  % bd->cfg.read_size == 0);
-    LFS_ASSERT(size % bd->cfg.read_size == 0);
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(off  % cfg->read_size == 0);
+    LFS_ASSERT(size % cfg->read_size == 0);
+    LFS_ASSERT(block < cfg->block_count);
 
     // zero for reproducability (in case file is truncated)
-    if (bd->cfg.erase_value != -1) {
-        memset(buffer, bd->cfg.erase_value, size);
+    if (bd->cfg->erase_value != -1) {
+        memset(buffer, bd->cfg->erase_value, size);
     }
 
     // read
     off_t res1 = lseek(bd->fd,
-            (off_t)block*bd->cfg.erase_size + (off_t)off, SEEK_SET);
+            (off_t)block*cfg->block_size + (off_t)off, SEEK_SET);
     if (res1 < 0) {
         int err = -errno;
         LFS_FILEBD_TRACE("lfs_filebd_read -> %d", err);
@@ -83,21 +105,21 @@ int lfs_filebd_read(lfs_filebd_t *bd, lfs_block_t block,
     return 0;
 }
 
-int lfs_filebd_prog(lfs_filebd_t *bd, lfs_block_t block,
+int lfs_filebd_prog(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, const void *buffer, lfs_size_t size) {
-    LFS_FILEBD_TRACE("lfs_filebd_prog(%p, "
-                "0x%"PRIx32", %"PRIu32", %p, %"PRIu32")",
-            (void*)bd, block, off, buffer, size);
+    LFS_FILEBD_TRACE("lfs_filebd_prog(%p, 0x%"PRIx32", %"PRIu32", %p, %"PRIu32")",
+            (void*)cfg, block, off, buffer, size);
+    lfs_filebd_t *bd = cfg->context;
 
     // check if write is valid
-    LFS_ASSERT(off  % bd->cfg.prog_size == 0);
-    LFS_ASSERT(size % bd->cfg.prog_size == 0);
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(off  % cfg->prog_size == 0);
+    LFS_ASSERT(size % cfg->prog_size == 0);
+    LFS_ASSERT(block < cfg->block_count);
 
     // check that data was erased? only needed for testing
-    if (bd->cfg.erase_value != -1) {
+    if (bd->cfg->erase_value != -1) {
         off_t res1 = lseek(bd->fd,
-                (off_t)block*bd->cfg.erase_size + (off_t)off, SEEK_SET);
+                (off_t)block*cfg->block_size + (off_t)off, SEEK_SET);
         if (res1 < 0) {
             int err = -errno;
             LFS_FILEBD_TRACE("lfs_filebd_prog -> %d", err);
@@ -113,13 +135,13 @@ int lfs_filebd_prog(lfs_filebd_t *bd, lfs_block_t block,
                 return err;
             }
 
-            LFS_ASSERT(c == bd->cfg.erase_value);
+            LFS_ASSERT(c == bd->cfg->erase_value);
         }
     }
 
     // program data
     off_t res1 = lseek(bd->fd,
-            (off_t)block*bd->cfg.erase_size + (off_t)off, SEEK_SET);
+            (off_t)block*cfg->block_size + (off_t)off, SEEK_SET);
     if (res1 < 0) {
         int err = -errno;
         LFS_FILEBD_TRACE("lfs_filebd_prog -> %d", err);
@@ -137,23 +159,24 @@ int lfs_filebd_prog(lfs_filebd_t *bd, lfs_block_t block,
     return 0;
 }
 
-int lfs_filebd_erase(lfs_filebd_t *bd, lfs_block_t block) {
-    LFS_FILEBD_TRACE("lfs_filebd_erase(%p, 0x%"PRIx32")", (void*)bd, block);
+int lfs_filebd_erase(const struct lfs_config *cfg, lfs_block_t block) {
+    LFS_FILEBD_TRACE("lfs_filebd_erase(%p, 0x%"PRIx32")", (void*)cfg, block);
+    lfs_filebd_t *bd = cfg->context;
 
     // check if erase is valid
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(block < cfg->block_count);
 
     // erase, only needed for testing
-    if (bd->cfg.erase_value != -1) {
-        off_t res1 = lseek(bd->fd, (off_t)block*bd->cfg.erase_size, SEEK_SET);
+    if (bd->cfg->erase_value != -1) {
+        off_t res1 = lseek(bd->fd, (off_t)block*cfg->block_size, SEEK_SET);
         if (res1 < 0) {
             int err = -errno;
             LFS_FILEBD_TRACE("lfs_filebd_erase -> %d", err);
             return err;
         }
 
-        for (lfs_off_t i = 0; i < bd->cfg.erase_size; i++) {
-            ssize_t res2 = write(bd->fd, &(uint8_t){bd->cfg.erase_value}, 1);
+        for (lfs_off_t i = 0; i < cfg->block_size; i++) {
+            ssize_t res2 = write(bd->fd, &(uint8_t){bd->cfg->erase_value}, 1);
             if (res2 < 0) {
                 int err = -errno;
                 LFS_FILEBD_TRACE("lfs_filebd_erase -> %d", err);
@@ -166,10 +189,10 @@ int lfs_filebd_erase(lfs_filebd_t *bd, lfs_block_t block) {
     return 0;
 }
 
-int lfs_filebd_sync(lfs_filebd_t *bd) {
-    LFS_FILEBD_TRACE("lfs_filebd_sync(%p)", (void*)bd);
-
+int lfs_filebd_sync(const struct lfs_config *cfg) {
+    LFS_FILEBD_TRACE("lfs_filebd_sync(%p)", (void*)cfg);
     // file sync
+    lfs_filebd_t *bd = cfg->context;
     int err = fsync(bd->fd);
     if (err) {
         err = -errno;

bd/lfs_filebd.h

@@ -8,9 +8,11 @@
 #define LFS_FILEBD_H
 
 #include "lfs.h"
+#include "lfs_util.h"
 
 #ifdef __cplusplus
-extern "C" {
+extern "C"
+{
 #endif
 
 
@@ -22,21 +24,7 @@ extern "C" {
 #endif
 
 // filebd config (optional)
-struct lfs_filebd_cfg {
-    // Minimum size of block read. All read operations must be a
-    // multiple of this value.
-    lfs_size_t read_size;
-
-    // Minimum size of block program. All program operations must be a
-    // multiple of this value.
-    lfs_size_t prog_size;
-
-    // Size of an erasable block.
-    lfs_size_t erase_size;
-
-    // Number of erasable blocks on the device.
-    lfs_size_t erase_count;
-
+struct lfs_filebd_config {
     // 8-bit erase value to use for simulating erases. -1 does not simulate
     // erases, which can speed up testing by avoiding all the extra block-device
     // operations to store the erase value.
@@ -46,39 +34,40 @@ struct lfs_filebd_cfg {
 // filebd state
 typedef struct lfs_filebd {
     int fd;
-    struct lfs_filebd_cfg cfg;
+    const struct lfs_filebd_config *cfg;
 } lfs_filebd_t;
 
 
-// Create a file block device using the geometry in lfs_filebd_cfg
-int lfs_filebd_createcfg(lfs_filebd_t *bd, const char *path,
-        const struct lfs_filebd_cfg *cfg);
+// Create a file block device using the geometry in lfs_config
+int lfs_filebd_create(const struct lfs_config *cfg, const char *path);
+int lfs_filebd_createcfg(const struct lfs_config *cfg, const char *path,
+        const struct lfs_filebd_config *bdcfg);
 
 // Clean up memory associated with block device
-int lfs_filebd_destroy(lfs_filebd_t *bd);
+int lfs_filebd_destroy(const struct lfs_config *cfg);
 
 // Read a block
-int lfs_filebd_read(lfs_filebd_t *bd, lfs_block_t block,
+int lfs_filebd_read(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, void *buffer, lfs_size_t size);
 
 // Program a block
 //
 // The block must have previously been erased.
-int lfs_filebd_prog(lfs_filebd_t *bd, lfs_block_t block,
+int lfs_filebd_prog(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, const void *buffer, lfs_size_t size);
 
 // Erase a block
 //
 // A block must be erased before being programmed. The
 // state of an erased block is undefined.
-int lfs_filebd_erase(lfs_filebd_t *bd, lfs_block_t block);
+int lfs_filebd_erase(const struct lfs_config *cfg, lfs_block_t block);
 
 // Sync the block device
-int lfs_filebd_sync(lfs_filebd_t *bd);
+int lfs_filebd_sync(const struct lfs_config *cfg);
 
 
 #ifdef __cplusplus
-}
+} /* extern "C" */
 #endif
 
 #endif

bd/lfs_rambd.c

@@ -6,24 +6,26 @@
  */
 #include "bd/lfs_rambd.h"
 
-int lfs_rambd_createcfg(lfs_rambd_t *bd,
-        const struct lfs_rambd_cfg *cfg) {
-    LFS_RAMBD_TRACE("lfs_filebd_createcfg(%p, %p {"
+int lfs_rambd_createcfg(const struct lfs_config *cfg,
+        const struct lfs_rambd_config *bdcfg) {
+    LFS_RAMBD_TRACE("lfs_rambd_createcfg(%p {.context=%p, "
+                ".read=%p, .prog=%p, .erase=%p, .sync=%p, "
                 ".read_size=%"PRIu32", .prog_size=%"PRIu32", "
-                ".erase_size=%"PRIu32", .erase_count=%"PRIu32", "
-                ".erase_value=%"PRId32", .buffer=%p})",
-            (void*)bd, (void*)cfg,
-            cfg->read_size, cfg->prog_size, cfg->erase_size, cfg->erase_count,
-            cfg->erase_value, cfg->buffer);
-
-    // copy over config
-    bd->cfg = *cfg;
+                ".block_size=%"PRIu32", .block_count=%"PRIu32"}, "
+                "%p {.erase_value=%"PRId32", .buffer=%p})",
+            (void*)cfg, cfg->context,
+            (void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog,
+            (void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync,
+            cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count,
+            (void*)bdcfg, bdcfg->erase_value, bdcfg->buffer);
+    lfs_rambd_t *bd = cfg->context;
+    bd->cfg = bdcfg;
 
     // allocate buffer?
-    if (bd->cfg.buffer) {
-        bd->buffer = bd->cfg.buffer;
+    if (bd->cfg->buffer) {
+        bd->buffer = bd->cfg->buffer;
     } else {
-        bd->buffer = lfs_malloc(bd->cfg.erase_size * bd->cfg.erase_count);
+        bd->buffer = lfs_malloc(cfg->block_size * cfg->block_count);
         if (!bd->buffer) {
             LFS_RAMBD_TRACE("lfs_rambd_createcfg -> %d", LFS_ERR_NOMEM);
             return LFS_ERR_NOMEM;
@@ -31,89 +33,108 @@ int lfs_rambd_createcfg(lfs_rambd_t *bd,
     }
 
     // zero for reproducability?
-    if (bd->cfg.erase_value != -1) {
-        memset(bd->buffer, bd->cfg.erase_value,
-                bd->cfg.erase_size * bd->cfg.erase_count);
+    if (bd->cfg->erase_value != -1) {
+        memset(bd->buffer, bd->cfg->erase_value,
+                cfg->block_size * cfg->block_count);
     }
 
     LFS_RAMBD_TRACE("lfs_rambd_createcfg -> %d", 0);
     return 0;
 }
 
-int lfs_rambd_destroy(lfs_rambd_t *bd) {
-    LFS_RAMBD_TRACE("lfs_rambd_destroy(%p)", (void*)bd);
+int lfs_rambd_create(const struct lfs_config *cfg) {
+    LFS_RAMBD_TRACE("lfs_rambd_create(%p {.context=%p, "
+                ".read=%p, .prog=%p, .erase=%p, .sync=%p, "
+                ".read_size=%"PRIu32", .prog_size=%"PRIu32", "
+                ".block_size=%"PRIu32", .block_count=%"PRIu32"})",
+            (void*)cfg, cfg->context,
+            (void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog,
+            (void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync,
+            cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count);
+    static const struct lfs_rambd_config defaults = {.erase_value=-1};
+    int err = lfs_rambd_createcfg(cfg, &defaults);
+    LFS_RAMBD_TRACE("lfs_rambd_create -> %d", err);
+    return err;
+}
+
+int lfs_rambd_destroy(const struct lfs_config *cfg) {
+    LFS_RAMBD_TRACE("lfs_rambd_destroy(%p)", (void*)cfg);
     // clean up memory
-    if (!bd->cfg.buffer) {
+    lfs_rambd_t *bd = cfg->context;
+    if (!bd->cfg->buffer) {
         lfs_free(bd->buffer);
     }
     LFS_RAMBD_TRACE("lfs_rambd_destroy -> %d", 0);
     return 0;
 }
 
-int lfs_rambd_read(lfs_rambd_t *bd, lfs_block_t block,
+int lfs_rambd_read(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, void *buffer, lfs_size_t size) {
     LFS_RAMBD_TRACE("lfs_rambd_read(%p, "
                 "0x%"PRIx32", %"PRIu32", %p, %"PRIu32")",
-            (void*)bd, block, off, buffer, size);
+            (void*)cfg, block, off, buffer, size);
+    lfs_rambd_t *bd = cfg->context;
 
     // check if read is valid
-    LFS_ASSERT(off  % bd->cfg.read_size == 0);
-    LFS_ASSERT(size % bd->cfg.read_size == 0);
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(off  % cfg->read_size == 0);
+    LFS_ASSERT(size % cfg->read_size == 0);
+    LFS_ASSERT(block < cfg->block_count);
 
     // read data
-    memcpy(buffer, &bd->buffer[block*bd->cfg.erase_size + off], size);
+    memcpy(buffer, &bd->buffer[block*cfg->block_size + off], size);
 
     LFS_RAMBD_TRACE("lfs_rambd_read -> %d", 0);
     return 0;
 }
 
-int lfs_rambd_prog(lfs_rambd_t *bd, lfs_block_t block,
+int lfs_rambd_prog(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, const void *buffer, lfs_size_t size) {
     LFS_RAMBD_TRACE("lfs_rambd_prog(%p, "
                 "0x%"PRIx32", %"PRIu32", %p, %"PRIu32")",
-            (void*)bd, block, off, buffer, size);
+            (void*)cfg, block, off, buffer, size);
+    lfs_rambd_t *bd = cfg->context;
 
     // check if write is valid
-    LFS_ASSERT(off  % bd->cfg.prog_size == 0);
-    LFS_ASSERT(size % bd->cfg.prog_size == 0);
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(off  % cfg->prog_size == 0);
+    LFS_ASSERT(size % cfg->prog_size == 0);
+    LFS_ASSERT(block < cfg->block_count);
 
     // check that data was erased? only needed for testing
-    if (bd->cfg.erase_value != -1) {
+    if (bd->cfg->erase_value != -1) {
         for (lfs_off_t i = 0; i < size; i++) {
-            LFS_ASSERT(bd->buffer[block*bd->cfg.erase_size + off + i] ==
-                    bd->cfg.erase_value);
+            LFS_ASSERT(bd->buffer[block*cfg->block_size + off + i] ==
+                    bd->cfg->erase_value);
         }
     }
 
     // program data
-    memcpy(&bd->buffer[block*bd->cfg.erase_size + off], buffer, size);
+    memcpy(&bd->buffer[block*cfg->block_size + off], buffer, size);
 
     LFS_RAMBD_TRACE("lfs_rambd_prog -> %d", 0);
     return 0;
 }
 
-int lfs_rambd_erase(lfs_rambd_t *bd, lfs_block_t block) {
-    LFS_RAMBD_TRACE("lfs_rambd_erase(%p, 0x%"PRIx32")", (void*)bd, block);
+int lfs_rambd_erase(const struct lfs_config *cfg, lfs_block_t block) {
+    LFS_RAMBD_TRACE("lfs_rambd_erase(%p, 0x%"PRIx32")", (void*)cfg, block);
+    lfs_rambd_t *bd = cfg->context;
 
     // check if erase is valid
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(block < cfg->block_count);
 
     // erase, only needed for testing
-    if (bd->cfg.erase_value != -1) {
-        memset(&bd->buffer[block*bd->cfg.erase_size],
-                bd->cfg.erase_value, bd->cfg.erase_size);
+    if (bd->cfg->erase_value != -1) {
+        memset(&bd->buffer[block*cfg->block_size],
+                bd->cfg->erase_value, cfg->block_size);
     }
 
     LFS_RAMBD_TRACE("lfs_rambd_erase -> %d", 0);
     return 0;
 }
 
-int lfs_rambd_sync(lfs_rambd_t *bd) {
-    LFS_RAMBD_TRACE("lfs_rambd_sync(%p)", (void*)bd);
+int lfs_rambd_sync(const struct lfs_config *cfg) {
+    LFS_RAMBD_TRACE("lfs_rambd_sync(%p)", (void*)cfg);
     // sync does nothing because we aren't backed by anything real
-    (void)bd;
+    (void)cfg;
     LFS_RAMBD_TRACE("lfs_rambd_sync -> %d", 0);
     return 0;
 }

bd/lfs_rambd.h

@@ -8,9 +8,11 @@
 #define LFS_RAMBD_H
 
 #include "lfs.h"
+#include "lfs_util.h"
 
 #ifdef __cplusplus
-extern "C" {
+extern "C"
+{
 #endif
 
 
@@ -22,21 +24,7 @@ extern "C" {
 #endif
 
 // rambd config (optional)
-struct lfs_rambd_cfg {
-    // Minimum size of block read. All read operations must be a
-    // multiple of this value.
-    lfs_size_t read_size;
-
-    // Minimum size of block program. All program operations must be a
-    // multiple of this value.
-    lfs_size_t prog_size;
-
-    // Size of an erasable block.
-    lfs_size_t erase_size;
-
-    // Number of erasable blocks on the device.
-    lfs_size_t erase_count;
-
+struct lfs_rambd_config {
     // 8-bit erase value to simulate erasing with. -1 indicates no erase
     // occurs, which is still a valid block device
     int32_t erase_value;
@@ -48,39 +36,40 @@ struct lfs_rambd_cfg {
 // rambd state
 typedef struct lfs_rambd {
     uint8_t *buffer;
-    struct lfs_rambd_cfg cfg;
+    const struct lfs_rambd_config *cfg;
 } lfs_rambd_t;
 
 
-// Create a RAM block device using the geometry in lfs_cfg
-int lfs_rambd_createcfg(lfs_rambd_t *bd,
-        const struct lfs_rambd_cfg *cfg);
+// Create a RAM block device using the geometry in lfs_config
+int lfs_rambd_create(const struct lfs_config *cfg);
+int lfs_rambd_createcfg(const struct lfs_config *cfg,
+        const struct lfs_rambd_config *bdcfg);
 
 // Clean up memory associated with block device
-int lfs_rambd_destroy(lfs_rambd_t *bd);
+int lfs_rambd_destroy(const struct lfs_config *cfg);
 
 // Read a block
-int lfs_rambd_read(lfs_rambd_t *bd, lfs_block_t block,
+int lfs_rambd_read(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, void *buffer, lfs_size_t size);
 
 // Program a block
 //
 // The block must have previously been erased.
-int lfs_rambd_prog(lfs_rambd_t *bd, lfs_block_t block,
+int lfs_rambd_prog(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, const void *buffer, lfs_size_t size);
 
 // Erase a block
 //
 // A block must be erased before being programmed. The
 // state of an erased block is undefined.
-int lfs_rambd_erase(lfs_rambd_t *bd, lfs_block_t block);
+int lfs_rambd_erase(const struct lfs_config *cfg, lfs_block_t block);
 
 // Sync the block device
-int lfs_rambd_sync(lfs_rambd_t *bd);
+int lfs_rambd_sync(const struct lfs_config *cfg);
 
 
 #ifdef __cplusplus
-}
+} /* extern "C" */
 #endif
 
 #endif

bd/lfs_testbd.c

@@ -10,164 +10,185 @@
 #include <stdlib.h>
 
 
-int lfs_testbd_createcfg(lfs_testbd_t *bd, const char *path,
-        const struct lfs_testbd_cfg *cfg) {
-    LFS_TESTBD_TRACE("lfs_testbd_createcfg(%p, \"%s\", %p {"
+int lfs_testbd_createcfg(const struct lfs_config *cfg, const char *path,
+        const struct lfs_testbd_config *bdcfg) {
+    LFS_TESTBD_TRACE("lfs_testbd_createcfg(%p {.context=%p, "
+                ".read=%p, .prog=%p, .erase=%p, .sync=%p, "
                 ".read_size=%"PRIu32", .prog_size=%"PRIu32", "
-                ".erase_size=%"PRIu32", .erase_count=%"PRIu32", "
-                ".erase_value=%"PRId32", .erase_cycles=%"PRIu32", "
+                ".block_size=%"PRIu32", .block_count=%"PRIu32"}, "
+                "\"%s\", "
+                "%p {.erase_value=%"PRId32", .erase_cycles=%"PRIu32", "
                 ".badblock_behavior=%"PRIu8", .power_cycles=%"PRIu32", "
                 ".buffer=%p, .wear_buffer=%p})",
-            (void*)bd, path, (void*)cfg,
-            cfg->read_size, cfg->prog_size, cfg->erase_size, cfg->erase_count,
-            cfg->erase_value, cfg->erase_cycles,
-            cfg->badblock_behavior, cfg->power_cycles,
-            cfg->buffer, cfg->wear_buffer);
-
-    // copy over config
-    bd->cfg = *cfg;
+            (void*)cfg, cfg->context,
+            (void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog,
+            (void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync,
+            cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count,
+            path, (void*)bdcfg, bdcfg->erase_value, bdcfg->erase_cycles,
+            bdcfg->badblock_behavior, bdcfg->power_cycles,
+            bdcfg->buffer, bdcfg->wear_buffer);
+    lfs_testbd_t *bd = cfg->context;
+    bd->cfg = bdcfg;
 
     // setup testing things
     bd->persist = path;
-    bd->power_cycles = bd->cfg.power_cycles;
+    bd->power_cycles = bd->cfg->power_cycles;
 
-    if (bd->cfg.erase_cycles) {
-        if (bd->cfg.wear_buffer) {
-            bd->wear = bd->cfg.wear_buffer;
+    if (bd->cfg->erase_cycles) {
+        if (bd->cfg->wear_buffer) {
+            bd->wear = bd->cfg->wear_buffer;
         } else {
-            bd->wear = lfs_malloc(sizeof(lfs_testbd_wear_t)*cfg->erase_count);
+            bd->wear = lfs_malloc(sizeof(lfs_testbd_wear_t)*cfg->block_count);
             if (!bd->wear) {
                 LFS_TESTBD_TRACE("lfs_testbd_createcfg -> %d", LFS_ERR_NOMEM);
                 return LFS_ERR_NOMEM;
             }
         }
 
-        memset(bd->wear, 0, sizeof(lfs_testbd_wear_t) * bd->cfg.erase_count);
+        memset(bd->wear, 0, sizeof(lfs_testbd_wear_t) * cfg->block_count);
     }
 
     // create underlying block device
     if (bd->persist) {
-        int err = lfs_filebd_createcfg(&bd->impl.filebd, path,
-                &(struct lfs_filebd_cfg){
-                    .read_size=bd->cfg.read_size,
-                    .prog_size=bd->cfg.prog_size,
-                    .erase_size=bd->cfg.erase_size,
-                    .erase_count=bd->cfg.erase_count,
-                    .erase_value=bd->cfg.erase_value});
+        bd->u.file.cfg = (struct lfs_filebd_config){
+            .erase_value = bd->cfg->erase_value,
+        };
+        int err = lfs_filebd_createcfg(cfg, path, &bd->u.file.cfg);
         LFS_TESTBD_TRACE("lfs_testbd_createcfg -> %d", err);
         return err;
     } else {
-        int err = lfs_rambd_createcfg(&bd->impl.rambd,
-                &(struct lfs_rambd_cfg){
-                    .read_size=bd->cfg.read_size,
-                    .prog_size=bd->cfg.prog_size,
-                    .erase_size=bd->cfg.erase_size,
-                    .erase_count=bd->cfg.erase_count,
-                    .erase_value=bd->cfg.erase_value,
-                    .buffer=bd->cfg.buffer});
+        bd->u.ram.cfg = (struct lfs_rambd_config){
+            .erase_value = bd->cfg->erase_value,
+            .buffer = bd->cfg->buffer,
+        };
+        int err = lfs_rambd_createcfg(cfg, &bd->u.ram.cfg);
         LFS_TESTBD_TRACE("lfs_testbd_createcfg -> %d", err);
         return err;
     }
 }
 
-int lfs_testbd_destroy(lfs_testbd_t *bd) {
-    LFS_TESTBD_TRACE("lfs_testbd_destroy(%p)", (void*)bd);
-    if (bd->cfg.erase_cycles && !bd->cfg.wear_buffer) {
+int lfs_testbd_create(const struct lfs_config *cfg, const char *path) {
+    LFS_TESTBD_TRACE("lfs_testbd_create(%p {.context=%p, "
+                ".read=%p, .prog=%p, .erase=%p, .sync=%p, "
+                ".read_size=%"PRIu32", .prog_size=%"PRIu32", "
+                ".block_size=%"PRIu32", .block_count=%"PRIu32"}, "
+                "\"%s\")",
+            (void*)cfg, cfg->context,
+            (void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog,
+            (void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync,
+            cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count,
+            path);
+    static const struct lfs_testbd_config defaults = {.erase_value=-1};
+    int err = lfs_testbd_createcfg(cfg, path, &defaults);
+    LFS_TESTBD_TRACE("lfs_testbd_create -> %d", err);
+    return err;
+}
+
+int lfs_testbd_destroy(const struct lfs_config *cfg) {
+    LFS_TESTBD_TRACE("lfs_testbd_destroy(%p)", (void*)cfg);
+    lfs_testbd_t *bd = cfg->context;
+    if (bd->cfg->erase_cycles && !bd->cfg->wear_buffer) {
         lfs_free(bd->wear);
     }
 
     if (bd->persist) {
-        int err = lfs_filebd_destroy(&bd->impl.filebd);
+        int err = lfs_filebd_destroy(cfg);
         LFS_TESTBD_TRACE("lfs_testbd_destroy -> %d", err);
         return err;
     } else {
-        int err = lfs_rambd_destroy(&bd->impl.rambd);
+        int err = lfs_rambd_destroy(cfg);
         LFS_TESTBD_TRACE("lfs_testbd_destroy -> %d", err);
         return err;
     }
 }
 
 /// Internal mapping to block devices ///
-static int lfs_testbd_rawread(lfs_testbd_t *bd, lfs_block_t block,
+static int lfs_testbd_rawread(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, void *buffer, lfs_size_t size) {
+    lfs_testbd_t *bd = cfg->context;
     if (bd->persist) {
-        return lfs_filebd_read(&bd->impl.filebd, block, off, buffer, size);
+        return lfs_filebd_read(cfg, block, off, buffer, size);
     } else {
-        return lfs_rambd_read(&bd->impl.rambd, block, off, buffer, size);
+        return lfs_rambd_read(cfg, block, off, buffer, size);
     }
 }
 
-static int lfs_testbd_rawprog(lfs_testbd_t *bd, lfs_block_t block,
+static int lfs_testbd_rawprog(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, const void *buffer, lfs_size_t size) {
+    lfs_testbd_t *bd = cfg->context;
     if (bd->persist) {
-        return lfs_filebd_prog(&bd->impl.filebd, block, off, buffer, size);
+        return lfs_filebd_prog(cfg, block, off, buffer, size);
     } else {
-        return lfs_rambd_prog(&bd->impl.rambd, block, off, buffer, size);
+        return lfs_rambd_prog(cfg, block, off, buffer, size);
     }
 }
 
-static int lfs_testbd_rawerase(lfs_testbd_t *bd,
+static int lfs_testbd_rawerase(const struct lfs_config *cfg,
         lfs_block_t block) {
+    lfs_testbd_t *bd = cfg->context;
     if (bd->persist) {
-        return lfs_filebd_erase(&bd->impl.filebd, block);
+        return lfs_filebd_erase(cfg, block);
     } else {
-        return lfs_rambd_erase(&bd->impl.rambd, block);
+        return lfs_rambd_erase(cfg, block);
     }
 }
 
-static int lfs_testbd_rawsync(lfs_testbd_t *bd) {
+static int lfs_testbd_rawsync(const struct lfs_config *cfg) {
+    lfs_testbd_t *bd = cfg->context;
     if (bd->persist) {
-        return lfs_filebd_sync(&bd->impl.filebd);
+        return lfs_filebd_sync(cfg);
     } else {
-        return lfs_rambd_sync(&bd->impl.rambd);
+        return lfs_rambd_sync(cfg);
     }
 }
 
 /// block device API ///
-int lfs_testbd_read(lfs_testbd_t *bd, lfs_block_t block,
+int lfs_testbd_read(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, void *buffer, lfs_size_t size) {
     LFS_TESTBD_TRACE("lfs_testbd_read(%p, "
                 "0x%"PRIx32", %"PRIu32", %p, %"PRIu32")",
-            (void*)bd, block, off, buffer, size);
+            (void*)cfg, block, off, buffer, size);
+    lfs_testbd_t *bd = cfg->context;
 
     // check if read is valid
-    LFS_ASSERT(off  % bd->cfg.read_size == 0);
-    LFS_ASSERT(size % bd->cfg.read_size == 0);
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(off  % cfg->read_size == 0);
+    LFS_ASSERT(size % cfg->read_size == 0);
+    LFS_ASSERT(block < cfg->block_count);
 
     // block bad?
-    if (bd->cfg.erase_cycles && bd->wear[block] >= bd->cfg.erase_cycles &&
-            bd->cfg.badblock_behavior == LFS_TESTBD_BADBLOCK_READERROR) {
+    if (bd->cfg->erase_cycles && bd->wear[block] >= bd->cfg->erase_cycles &&
+            bd->cfg->badblock_behavior == LFS_TESTBD_BADBLOCK_READERROR) {
         LFS_TESTBD_TRACE("lfs_testbd_read -> %d", LFS_ERR_CORRUPT);
         return LFS_ERR_CORRUPT;
     }
 
     // read
-    int err = lfs_testbd_rawread(bd, block, off, buffer, size);
+    int err = lfs_testbd_rawread(cfg, block, off, buffer, size);
     LFS_TESTBD_TRACE("lfs_testbd_read -> %d", err);
     return err;
 }
 
-int lfs_testbd_prog(lfs_testbd_t *bd, lfs_block_t block,
+int lfs_testbd_prog(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, const void *buffer, lfs_size_t size) {
     LFS_TESTBD_TRACE("lfs_testbd_prog(%p, "
                 "0x%"PRIx32", %"PRIu32", %p, %"PRIu32")",
-            (void*)bd, block, off, buffer, size);
+            (void*)cfg, block, off, buffer, size);
+    lfs_testbd_t *bd = cfg->context;
 
     // check if write is valid
-    LFS_ASSERT(off  % bd->cfg.prog_size == 0);
-    LFS_ASSERT(size % bd->cfg.prog_size == 0);
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(off  % cfg->prog_size == 0);
+    LFS_ASSERT(size % cfg->prog_size == 0);
+    LFS_ASSERT(block < cfg->block_count);
 
     // block bad?
-    if (bd->cfg.erase_cycles && bd->wear[block] >= bd->cfg.erase_cycles) {
-        if (bd->cfg.badblock_behavior ==
+    if (bd->cfg->erase_cycles && bd->wear[block] >= bd->cfg->erase_cycles) {
+        if (bd->cfg->badblock_behavior ==
                 LFS_TESTBD_BADBLOCK_PROGERROR) {
             LFS_TESTBD_TRACE("lfs_testbd_prog -> %d", LFS_ERR_CORRUPT);
             return LFS_ERR_CORRUPT;
-        } else if (bd->cfg.badblock_behavior ==
+        } else if (bd->cfg->badblock_behavior ==
                 LFS_TESTBD_BADBLOCK_PROGNOOP ||
-                bd->cfg.badblock_behavior ==
+                bd->cfg->badblock_behavior ==
                 LFS_TESTBD_BADBLOCK_ERASENOOP) {
             LFS_TESTBD_TRACE("lfs_testbd_prog -> %d", 0);
             return 0;
@@ -175,7 +196,7 @@ int lfs_testbd_prog(lfs_testbd_t *bd, lfs_block_t block,
     }
 
     // prog
-    int err = lfs_testbd_rawprog(bd, block, off, buffer, size);
+    int err = lfs_testbd_rawprog(cfg, block, off, buffer, size);
     if (err) {
         LFS_TESTBD_TRACE("lfs_testbd_prog -> %d", err);
         return err;
@@ -186,7 +207,7 @@ int lfs_testbd_prog(lfs_testbd_t *bd, lfs_block_t block,
         bd->power_cycles -= 1;
         if (bd->power_cycles == 0) {
             // sync to make sure we persist the last changes
-            assert(lfs_testbd_rawsync(bd) == 0);
+            LFS_ASSERT(lfs_testbd_rawsync(cfg) == 0);
             // simulate power loss
             exit(33);
         }
@@ -196,20 +217,21 @@ int lfs_testbd_prog(lfs_testbd_t *bd, lfs_block_t block,
     return 0;
 }
 
-int lfs_testbd_erase(lfs_testbd_t *bd, lfs_block_t block) {
-    LFS_TESTBD_TRACE("lfs_testbd_erase(%p, 0x%"PRIx32")", (void*)bd, block);
+int lfs_testbd_erase(const struct lfs_config *cfg, lfs_block_t block) {
+    LFS_TESTBD_TRACE("lfs_testbd_erase(%p, 0x%"PRIx32")", (void*)cfg, block);
+    lfs_testbd_t *bd = cfg->context;
 
     // check if erase is valid
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(block < cfg->block_count);
 
     // block bad?
-    if (bd->cfg.erase_cycles) {
-        if (bd->wear[block] >= bd->cfg.erase_cycles) {
-            if (bd->cfg.badblock_behavior ==
+    if (bd->cfg->erase_cycles) {
+        if (bd->wear[block] >= bd->cfg->erase_cycles) {
+            if (bd->cfg->badblock_behavior ==
                     LFS_TESTBD_BADBLOCK_ERASEERROR) {
                 LFS_TESTBD_TRACE("lfs_testbd_erase -> %d", LFS_ERR_CORRUPT);
                 return LFS_ERR_CORRUPT;
-            } else if (bd->cfg.badblock_behavior ==
+            } else if (bd->cfg->badblock_behavior ==
                     LFS_TESTBD_BADBLOCK_ERASENOOP) {
                 LFS_TESTBD_TRACE("lfs_testbd_erase -> %d", 0);
                 return 0;
@@ -221,7 +243,7 @@ int lfs_testbd_erase(lfs_testbd_t *bd, lfs_block_t block) {
     }
 
     // erase
-    int err = lfs_testbd_rawerase(bd, block);
+    int err = lfs_testbd_rawerase(cfg, block);
     if (err) {
         LFS_TESTBD_TRACE("lfs_testbd_erase -> %d", err);
         return err;
@@ -232,7 +254,7 @@ int lfs_testbd_erase(lfs_testbd_t *bd, lfs_block_t block) {
         bd->power_cycles -= 1;
         if (bd->power_cycles == 0) {
             // sync to make sure we persist the last changes
-            assert(lfs_testbd_rawsync(bd) == 0);
+            LFS_ASSERT(lfs_testbd_rawsync(cfg) == 0);
             // simulate power loss
             exit(33);
         }
@@ -242,34 +264,36 @@ int lfs_testbd_erase(lfs_testbd_t *bd, lfs_block_t block) {
     return 0;
 }
 
-int lfs_testbd_sync(lfs_testbd_t *bd) {
-    LFS_TESTBD_TRACE("lfs_testbd_sync(%p)", (void*)bd);
-    int err = lfs_testbd_rawsync(bd);
+int lfs_testbd_sync(const struct lfs_config *cfg) {
+    LFS_TESTBD_TRACE("lfs_testbd_sync(%p)", (void*)cfg);
+    int err = lfs_testbd_rawsync(cfg);
     LFS_TESTBD_TRACE("lfs_testbd_sync -> %d", err);
     return err;
 }
 
 
 /// simulated wear operations ///
-lfs_testbd_swear_t lfs_testbd_getwear(lfs_testbd_t *bd,
+lfs_testbd_swear_t lfs_testbd_getwear(const struct lfs_config *cfg,
         lfs_block_t block) {
-    LFS_TESTBD_TRACE("lfs_testbd_getwear(%p, %"PRIu32")", (void*)bd, block);
+    LFS_TESTBD_TRACE("lfs_testbd_getwear(%p, %"PRIu32")", (void*)cfg, block);
+    lfs_testbd_t *bd = cfg->context;
 
     // check if block is valid
-    LFS_ASSERT(bd->cfg.erase_cycles);
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(bd->cfg->erase_cycles);
+    LFS_ASSERT(block < cfg->block_count);
 
     LFS_TESTBD_TRACE("lfs_testbd_getwear -> %"PRIu32, bd->wear[block]);
     return bd->wear[block];
 }
 
-int lfs_testbd_setwear(lfs_testbd_t *bd,
+int lfs_testbd_setwear(const struct lfs_config *cfg,
         lfs_block_t block, lfs_testbd_wear_t wear) {
-    LFS_TESTBD_TRACE("lfs_testbd_setwear(%p, %"PRIu32")", (void*)bd, block);
+    LFS_TESTBD_TRACE("lfs_testbd_setwear(%p, %"PRIu32")", (void*)cfg, block);
+    lfs_testbd_t *bd = cfg->context;
 
     // check if block is valid
-    LFS_ASSERT(bd->cfg.erase_cycles);
-    LFS_ASSERT(block < bd->cfg.erase_count);
+    LFS_ASSERT(bd->cfg->erase_cycles);
+    LFS_ASSERT(block < cfg->block_count);
 
     bd->wear[block] = wear;
 

bd/lfs_testbd.h

@@ -9,11 +9,13 @@
 #define LFS_TESTBD_H
 
 #include "lfs.h"
+#include "lfs_util.h"
 #include "bd/lfs_rambd.h"
 #include "bd/lfs_filebd.h"
 
 #ifdef __cplusplus
-extern "C" {
+extern "C"
+{
 #endif
 
 
@@ -43,21 +45,7 @@ typedef uint32_t lfs_testbd_wear_t;
 typedef int32_t  lfs_testbd_swear_t;
 
 // testbd config, this is required for testing
-struct lfs_testbd_cfg {
-    // Minimum size of block read. All read operations must be a
-    // multiple of this value.
-    lfs_size_t read_size;
-
-    // Minimum size of block program. All program operations must be a
-    // multiple of this value.
-    lfs_size_t prog_size;
-
-    // Size of an erasable block.
-    lfs_size_t erase_size;
-
-    // Number of erasable blocks on the device.
-    lfs_size_t erase_count;
-
+struct lfs_testbd_config {
     // 8-bit erase value to use for simulating erases. -1 does not simulate
     // erases, which can speed up testing by avoiding all the extra block-device
     // operations to store the erase value.
@@ -84,63 +72,70 @@ struct lfs_testbd_cfg {
 // testbd state
 typedef struct lfs_testbd {
     union {
-        lfs_filebd_t filebd;
-        lfs_rambd_t rambd;
-    } impl;
+        struct {
+            lfs_filebd_t bd;
+            struct lfs_filebd_config cfg;
+        } file;
+        struct {
+            lfs_rambd_t bd;
+            struct lfs_rambd_config cfg;
+        } ram;
+    } u;
 
     bool persist;
     uint32_t power_cycles;
     lfs_testbd_wear_t *wear;
 
-    struct lfs_testbd_cfg cfg;
+    const struct lfs_testbd_config *cfg;
 } lfs_testbd_t;
 
 
 /// Block device API ///
 
-// Create a test block device using the geometry in lfs_cfg
+// Create a test block device using the geometry in lfs_config
 //
 // Note that filebd is used if a path is provided, if path is NULL
 // testbd will use rambd which can be much faster.
-int lfs_testbd_createcfg(lfs_testbd_t *bd, const char *path,
-        const struct lfs_testbd_cfg *cfg);
+int lfs_testbd_create(const struct lfs_config *cfg, const char *path);
+int lfs_testbd_createcfg(const struct lfs_config *cfg, const char *path,
+        const struct lfs_testbd_config *bdcfg);
 
 // Clean up memory associated with block device
-int lfs_testbd_destroy(lfs_testbd_t *bd);
+int lfs_testbd_destroy(const struct lfs_config *cfg);
 
 // Read a block
-int lfs_testbd_read(lfs_testbd_t *bd, lfs_block_t block,
+int lfs_testbd_read(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, void *buffer, lfs_size_t size);
 
 // Program a block
 //
 // The block must have previously been erased.
-int lfs_testbd_prog(lfs_testbd_t *bd, lfs_block_t block,
+int lfs_testbd_prog(const struct lfs_config *cfg, lfs_block_t block,
         lfs_off_t off, const void *buffer, lfs_size_t size);
 
 // Erase a block
 //
 // A block must be erased before being programmed. The
 // state of an erased block is undefined.
-int lfs_testbd_erase(lfs_testbd_t *bd, lfs_block_t block);
+int lfs_testbd_erase(const struct lfs_config *cfg, lfs_block_t block);
 
 // Sync the block device
-int lfs_testbd_sync(lfs_testbd_t *bd);
+int lfs_testbd_sync(const struct lfs_config *cfg);
 
 
 /// Additional extended API for driving test features ///
 
 // Get simulated wear on a given block
-lfs_testbd_swear_t lfs_testbd_getwear(lfs_testbd_t *bd,
+lfs_testbd_swear_t lfs_testbd_getwear(const struct lfs_config *cfg,
         lfs_block_t block);
 
 // Manually set simulated wear on a given block
-int lfs_testbd_setwear(lfs_testbd_t *bd,
+int lfs_testbd_setwear(const struct lfs_config *cfg,
         lfs_block_t block, lfs_testbd_wear_t wear);
 
 
 #ifdef __cplusplus
-}
+} /* extern "C" */
 #endif
 
 #endif

lfs.h

@@ -7,10 +7,13 @@
 #ifndef LFS_H
 #define LFS_H
 
+#include <stdint.h>
+#include <stdbool.h>
 #include "lfs_util.h"
 
 #ifdef __cplusplus
-extern "C" {
+extern "C"
+{
 #endif
 
 
@@ -19,7 +22,7 @@ extern "C" {
 // Software library version
 // Major (top-nibble), incremented on backwards incompatible changes
 // Minor (bottom-nibble), incremented on feature additions
-#define LFS_VERSION 0x00020002
+#define LFS_VERSION 0x00020003
 #define LFS_VERSION_MAJOR (0xffff & (LFS_VERSION >> 16))
 #define LFS_VERSION_MINOR (0xffff & (LFS_VERSION >>  0))
 
@@ -64,6 +67,26 @@ typedef uint32_t lfs_block_t;
 #define LFS_ATTR_MAX 1022
 #endif
 
+// Possible error codes, these are negative to allow
+// valid positive return values
+enum lfs_error {
+    LFS_ERR_OK          = 0,    // No error
+    LFS_ERR_IO          = -5,   // Error during device operation
+    LFS_ERR_CORRUPT     = -84,  // Corrupted
+    LFS_ERR_NOENT       = -2,   // No directory entry
+    LFS_ERR_EXIST       = -17,  // Entry already exists
+    LFS_ERR_NOTDIR      = -20,  // Entry is not a dir
+    LFS_ERR_ISDIR       = -21,  // Entry is a dir
+    LFS_ERR_NOTEMPTY    = -39,  // Dir is not empty
+    LFS_ERR_BADF        = -9,   // Bad file number
+    LFS_ERR_FBIG        = -27,  // File too large
+    LFS_ERR_INVAL       = -22,  // Invalid parameter
+    LFS_ERR_NOSPC       = -28,  // No space left on device
+    LFS_ERR_NOMEM       = -12,  // No more memory available
+    LFS_ERR_NOATTR      = -61,  // No data/attr available
+    LFS_ERR_NAMETOOLONG = -36,  // File name too long
+};
+
 // File types
 enum lfs_type {
     // file types
@@ -101,20 +124,25 @@ enum lfs_type {
 enum lfs_open_flags {
     // open flags
     LFS_O_RDONLY = 1,         // Open a file as read only
+#ifndef LFS_READONLY
     LFS_O_WRONLY = 2,         // Open a file as write only
     LFS_O_RDWR   = 3,         // Open a file as read and write
     LFS_O_CREAT  = 0x0100,    // Create a file if it does not exist
     LFS_O_EXCL   = 0x0200,    // Fail if a file already exists
     LFS_O_TRUNC  = 0x0400,    // Truncate the existing file to zero size
     LFS_O_APPEND = 0x0800,    // Move to end of file on every write
+#endif
 
     // internally used flags
+#ifndef LFS_READONLY
     LFS_F_DIRTY   = 0x010000, // File does not match storage
     LFS_F_WRITING = 0x020000, // File has been written since last flush
+#endif
     LFS_F_READING = 0x040000, // File has been read since last flush
-    LFS_F_ERRED   = 0x080000, // An error occured during write
+#ifndef LFS_READONLY
+    LFS_F_ERRED   = 0x080000, // An error occurred during write
+#endif
     LFS_F_INLINE  = 0x100000, // Currently inlined in directory entry
-    LFS_F_OPENED  = 0x200000, // File has been opened
 };
 
 // File seek flags
@@ -125,33 +153,42 @@ enum lfs_whence_flags {
 };
 
 
-#if !defined(LFS_STATICCFG)
 // Configuration provided during initialization of the littlefs
-struct lfs_cfg {
+struct lfs_config {
     // Opaque user provided context that can be used to pass
     // information to the block device operations
-    void *ctx;
+    void *context;
 
     // Read a region in a block. Negative error codes are propogated
     // to the user.
-    int (*read)(void *ctx, lfs_block_t block,
+    int (*read)(const struct lfs_config *c, lfs_block_t block,
             lfs_off_t off, void *buffer, lfs_size_t size);
 
     // Program a region in a block. The block must have previously
     // been erased. Negative error codes are propogated to the user.
     // May return LFS_ERR_CORRUPT if the block should be considered bad.
-    int (*prog)(void *ctx, lfs_block_t block,
+    int (*prog)(const struct lfs_config *c, lfs_block_t block,
             lfs_off_t off, const void *buffer, lfs_size_t size);
 
     // Erase a block. A block must be erased before being programmed.
     // The state of an erased block is undefined. Negative error codes
     // are propogated to the user.
     // May return LFS_ERR_CORRUPT if the block should be considered bad.
-    int (*erase)(void *ctx, lfs_block_t block);
+    int (*erase)(const struct lfs_config *c, lfs_block_t block);
 
     // Sync the state of the underlying block device. Negative error codes
     // are propogated to the user.
-    int (*sync)(void *ctx);
+    int (*sync)(const struct lfs_config *c);
+
+#ifdef LFS_THREADSAFE
+    // Lock the underlying block device. Negative error codes
+    // are propogated to the user.
+    int (*lock)(const struct lfs_config *c);
+
+    // Unlock the underlying block device. Negative error codes
+    // are propogated to the user.
+    int (*unlock)(const struct lfs_config *c);
+#endif
 
     // Minimum size of a block read. All read operations will be a
     // multiple of this value.
@@ -220,90 +257,6 @@ struct lfs_cfg {
     // LFS_ATTR_MAX when zero.
     lfs_size_t attr_max;
 };
-#else
-// Static configuration if LFS_STATICCFG is defined, there are defaults
-// for some of these, but some are required. For full documentation, see
-// the lfs_cfg struct above.
-
-// Block device operations
-int lfs_read(lfs_block_t block,
-        lfs_off_t off, void *buffer, lfs_size_t size);
-int lfs_prog(lfs_block_t block,
-        lfs_off_t off, const void *buffer, lfs_size_t size);
-int lfs_erase(lfs_block_t block);
-int lfs_sync(void);
-
-// Required configuration
-#ifndef LFS_READ_SIZE
-#error "LFS_STATICCFG requires LFS_READ_SIZE"
-#endif
-#ifndef LFS_PROG_SIZE
-#error "LFS_STATICCFG requires LFS_PROG_SIZE"
-#endif
-#ifndef LFS_BLOCK_SIZE
-#error "LFS_STATICCFG requires LFS_BLOCK_SIZE"
-#endif
-#ifndef LFS_BLOCK_COUNT
-#error "LFS_STATICCFG requires LFS_BLOCK_COUNT"
-#endif
-#ifndef LFS_BLOCK_CYCLES
-#error "LFS_STATICCFG requires LFS_BLOCK_CYCLES"
-#endif
-#ifndef LFS_CACHE_SIZE
-#error "LFS_STATICCFG requires LFS_CACHE_SIZE"
-#endif
-#ifndef LFS_LOOKAHEAD_SIZE
-#error "LFS_STATICCFG requires LFS_LOOKAHEAD_SIZE"
-#endif
-
-// Optional configuration
-#ifndef LFS_READ_BUFFER
-#define LFS_READ_BUFFER NULL
-#endif
-#ifndef LFS_PROG_BUFFER
-#define LFS_PROG_BUFFER NULL
-#endif
-#ifndef LFS_LOOKAHEAD_BUFFER
-#define LFS_LOOKAHEAD_BUFFER NULL
-#endif
-#endif
-
-#if !defined(LFS_FILE_STATICCFG)
-// Optional configuration provided during lfs_file_opencfg
-struct lfs_file_cfg {
-    // Optional statically allocated file buffer. Must be cache_size.
-    // By default lfs_malloc is used to allocate this buffer.
-    void *buffer;
-
-    // Optional list of custom attributes related to the file. If the file
-    // is opened with read access, these attributes will be read from disk
-    // during the open call. If the file is opened with write access, the
-    // attributes will be written to disk every file sync or close. This
-    // write occurs atomically with update to the file's contents.
-    //
-    // Custom attributes are uniquely identified by an 8-bit type and limited
-    // to LFS_ATTR_MAX bytes. When read, if the stored attribute is smaller
-    // than the buffer, it will be padded with zeros. If the stored attribute
-    // is larger, then it will be silently truncated. If the attribute is not
-    // found, it will be created implicitly.
-    struct lfs_attr *attrs;
-
-    // Number of custom attributes in the list
-    lfs_size_t attr_count;
-};
-#else
-// Static configuration if LFS_FILE_STATICCFG is defined. For full
-// documentation, see the lfs_file_cfg struct above.
-#ifndef LFS_FILE_BUFFER
-#define LFS_FILE_BUFFER NULL
-#endif
-#ifndef LFS_FILE_ATTRS
-#define LFS_FILE_ATTRS ((struct lfs_attr*)NULL)
-#endif
-#ifndef LFS_FILE_ATTR_COUNT
-#define LFS_FILE_ATTR_COUNT 0
-#endif
-#endif
 
 // File info structure
 struct lfs_info {
@@ -334,6 +287,29 @@ struct lfs_attr {
     lfs_size_t size;
 };
 
+// Optional configuration provided during lfs_file_opencfg
+struct lfs_file_config {
+    // Optional statically allocated file buffer. Must be cache_size.
+    // By default lfs_malloc is used to allocate this buffer.
+    void *buffer;
+
+    // Optional list of custom attributes related to the file. If the file
+    // is opened with read access, these attributes will be read from disk
+    // during the open call. If the file is opened with write access, the
+    // attributes will be written to disk every file sync or close. This
+    // write occurs atomically with update to the file's contents.
+    //
+    // Custom attributes are uniquely identified by an 8-bit type and limited
+    // to LFS_ATTR_MAX bytes. When read, if the stored attribute is smaller
+    // than the buffer, it will be padded with zeros. If the stored attribute
+    // is larger, then it will be silently truncated. If the attribute is not
+    // found, it will be created implicitly.
+    struct lfs_attr *attrs;
+
+    // Number of custom attributes in the list
+    lfs_size_t attr_count;
+};
+
 
 /// internal littlefs data structures ///
 typedef struct lfs_cache {
@@ -383,9 +359,7 @@ typedef struct lfs_file {
     lfs_off_t off;
     lfs_cache_t cache;
 
-#ifndef LFS_FILE_STATICCFG
-    struct lfs_file_cfg cfg;
-#endif
+    const struct lfs_file_config *cfg;
 } lfs_file_t;
 
 typedef struct lfs_superblock {
@@ -428,9 +402,10 @@ typedef struct lfs {
         uint32_t *buffer;
     } free;
 
-#ifndef LFS_STATICCFG
-    struct lfs_cfg cfg;
-#endif
+    const struct lfs_config *cfg;
+    lfs_size_t name_max;
+    lfs_size_t file_max;
+    lfs_size_t attr_max;
 
 #ifdef LFS_MIGRATE
     struct lfs1 *lfs1;
@@ -440,38 +415,18 @@ typedef struct lfs {
 
 /// Filesystem functions ///
 
-#if defined(LFS_STATICCFG)
-// Format a block device with littlefs
-//
-// Requires a littlefs object. This clobbers the littlefs object, and does
-// not leave the filesystem mounted.
-//
-// Returns a negative error code on failure.
-int lfs_format(lfs_t *lfs);
-#endif
-
-#if !defined(LFS_STATICCFG)
-// Format a block device with littlefs with per-filesystem configuration
+#ifndef LFS_READONLY
+// Format a block device with the littlefs
 //
 // Requires a littlefs object and config struct. This clobbers the littlefs
 // object, and does not leave the filesystem mounted. The config struct must
 // be zeroed for defaults and backwards compatibility.
 //
 // Returns a negative error code on failure.
-int lfs_formatcfg(lfs_t *lfs, const struct lfs_cfg *config);
+int lfs_format(lfs_t *lfs, const struct lfs_config *config);
 #endif
 
-#if defined(LFS_STATICCFG)
-// Mounts littlefs
-//
-// Requires a littlefs object and static configuration.
-//
-// Returns a negative error code on failure.
-int lfs_mount(lfs_t *lfs);
-#endif
-
-#if !defined(LFS_STATICCFG)
-// Mounts a littlefs with per-filesystem configuration
+// Mounts a littlefs
 //
 // Requires a littlefs object and config struct. Multiple filesystems
 // may be mounted simultaneously with multiple littlefs objects. Both
@@ -479,8 +434,7 @@ int lfs_mount(lfs_t *lfs);
 // be zeroed for defaults and backwards compatibility.
 //
 // Returns a negative error code on failure.
-int lfs_mountcfg(lfs_t *lfs, const struct lfs_cfg *config);
-#endif
+int lfs_mount(lfs_t *lfs, const struct lfs_config *config);
 
 // Unmounts a littlefs
 //
@@ -490,12 +444,15 @@ int lfs_unmount(lfs_t *lfs);
 
 /// General operations ///
 
+#ifndef LFS_READONLY
 // Removes a file or directory
 //
 // If removing a directory, the directory must be empty.
 // Returns a negative error code on failure.
 int lfs_remove(lfs_t *lfs, const char *path);
+#endif
 
+#ifndef LFS_READONLY
 // Rename or move a file or directory
 //
 // If the destination exists, it must match the source in type.
@@ -503,6 +460,7 @@ int lfs_remove(lfs_t *lfs, const char *path);
 //
 // Returns a negative error code on failure.
 int lfs_rename(lfs_t *lfs, const char *oldpath, const char *newpath);
+#endif
 
 // Find info about a file or directory
 //
@@ -525,6 +483,7 @@ int lfs_stat(lfs_t *lfs, const char *path, struct lfs_info *info);
 lfs_ssize_t lfs_getattr(lfs_t *lfs, const char *path,
         uint8_t type, void *buffer, lfs_size_t size);
 
+#ifndef LFS_READONLY
 // Set custom attributes
 //
 // Custom attributes are uniquely identified by an 8-bit type and limited
@@ -534,13 +493,16 @@ lfs_ssize_t lfs_getattr(lfs_t *lfs, const char *path,
 // Returns a negative error code on failure.
 int lfs_setattr(lfs_t *lfs, const char *path,
         uint8_t type, const void *buffer, lfs_size_t size);
+#endif
 
+#ifndef LFS_READONLY
 // Removes a custom attribute
 //
 // If an attribute is not found, nothing happens.
 //
 // Returns a negative error code on failure.
 int lfs_removeattr(lfs_t *lfs, const char *path, uint8_t type);
+#endif
 
 
 /// File operations ///
@@ -554,8 +516,7 @@ int lfs_removeattr(lfs_t *lfs, const char *path, uint8_t type);
 int lfs_file_open(lfs_t *lfs, lfs_file_t *file,
         const char *path, int flags);
 
-#if !defined(LFS_FILE_STATICCFG)
-// Open a file with per-file configuration
+// Open a file with extra configuration
 //
 // The mode that the file is opened in is determined by the flags, which
 // are values from the enum lfs_open_flags that are bitwise-ored together.
@@ -567,8 +528,7 @@ int lfs_file_open(lfs_t *lfs, lfs_file_t *file,
 // Returns a negative error code on failure.
 int lfs_file_opencfg(lfs_t *lfs, lfs_file_t *file,
         const char *path, int flags,
-        const struct lfs_file_cfg *config);
-#endif
+        const struct lfs_file_config *config);
 
 // Close a file
 //
@@ -591,6 +551,7 @@ int lfs_file_sync(lfs_t *lfs, lfs_file_t *file);
 lfs_ssize_t lfs_file_read(lfs_t *lfs, lfs_file_t *file,
         void *buffer, lfs_size_t size);
 
+#ifndef LFS_READONLY
 // Write data to file
 //
 // Takes a buffer and size indicating the data to write. The file will not
@@ -599,6 +560,7 @@ lfs_ssize_t lfs_file_read(lfs_t *lfs, lfs_file_t *file,
 // Returns the number of bytes written, or a negative error code on failure.
 lfs_ssize_t lfs_file_write(lfs_t *lfs, lfs_file_t *file,
         const void *buffer, lfs_size_t size);
+#endif
 
 // Change the position of the file
 //
@@ -607,10 +569,12 @@ lfs_ssize_t lfs_file_write(lfs_t *lfs, lfs_file_t *file,
 lfs_soff_t lfs_file_seek(lfs_t *lfs, lfs_file_t *file,
         lfs_soff_t off, int whence);
 
+#ifndef LFS_READONLY
 // Truncates the size of the file to the specified size
 //
 // Returns a negative error code on failure.
 int lfs_file_truncate(lfs_t *lfs, lfs_file_t *file, lfs_off_t size);
+#endif
 
 // Return the position of the file
 //
@@ -633,10 +597,12 @@ lfs_soff_t lfs_file_size(lfs_t *lfs, lfs_file_t *file);
 
 /// Directory operations ///
 
+#ifndef LFS_READONLY
 // Create a directory
 //
 // Returns a negative error code on failure.
 int lfs_mkdir(lfs_t *lfs, const char *path);
+#endif
 
 // Open a directory
 //
@@ -653,8 +619,9 @@ int lfs_dir_close(lfs_t *lfs, lfs_dir_t *dir);
 // Read an entry in the directory
 //
 // Fills out the info structure, based on the specified file or directory.
-// Returns a positive value on success, 0 at the end of directory,
-// or a negative error code on failure.
+//
+// Returns 0 on success, LFS_ERR_NOENT if there are no more directry entries,
+// or another negative error code on failure.
 int lfs_dir_read(lfs_t *lfs, lfs_dir_t *dir, struct lfs_info *info);
 
 // Change the position of the directory
@@ -698,39 +665,26 @@ lfs_ssize_t lfs_fs_size(lfs_t *lfs);
 // Returns a negative error code on failure.
 int lfs_fs_traverse(lfs_t *lfs, int (*cb)(void*, lfs_block_t), void *data);
 
-#if defined(LFS_MIGRATE) && defined(LFS_STATICCFG)
+#ifndef LFS_READONLY
+#ifdef LFS_MIGRATE
 // Attempts to migrate a previous version of littlefs
 //
 // Behaves similarly to the lfs_format function. Attempts to mount
 // the previous version of littlefs and update the filesystem so it can be
 // mounted with the current version of littlefs.
 //
-// Requires a littlefs object. This clobbers the littlefs object, and does
-// not leave the filesystem mounted.
-//
-// Returns a negative error code on failure.
-int lfs_migrate(lfs_t *lfs, const struct lfs_cfg *cfg);
-#endif
-
-#if defined(LFS_MIGRATE) && !defined(LFS_STATICCFG)
-// Attempts to migrate a previous version of littlefs with per-filesystem
-// configuration
-//
-// Behaves similarly to the lfs_format function. Attempts to mount
-// the previous version of littlefs and update the filesystem so it can be
-// mounted with the current version of littlefs.
-//
 // Requires a littlefs object and config struct. This clobbers the littlefs
 // object, and does not leave the filesystem mounted. The config struct must
 // be zeroed for defaults and backwards compatibility.
 //
 // Returns a negative error code on failure.
-int lfs_migratecfg(lfs_t *lfs, const struct lfs_cfg *cfg);
+int lfs_migrate(lfs_t *lfs, const struct lfs_config *cfg);
+#endif
 #endif
 
 
 #ifdef __cplusplus
-}
+} /* extern "C" */
 #endif
 
 #endif

lfs_util.c

@@ -7,7 +7,7 @@
 #include "lfs_util.h"
 
 // Only compile if user does not provide custom config
-#ifndef LFS_UTIL
+#ifndef LFS_CONFIG
 
 
 // Software CRC implementation with small lookup table

lfs_util.h

@@ -3,21 +3,20 @@
  *
  * Copyright (c) 2017, Arm Limited. All rights reserved.
  * SPDX-License-Identifier: BSD-3-Clause
- *
- * Can be overridden by users with their own configuration by defining
- * LFS_UTIL as a header file (-DLFS_UTIL=my_lfs_util.h)
- *
- * If LFS_UTIL is defined, none of the default definitions will be
- * emitted and must be provided by the user's header file. To start, I would
- * suggest copying lfs_util.h and modifying as needed.
  */
 #ifndef LFS_UTIL_H
 #define LFS_UTIL_H
 
-#ifdef LFS_UTIL
+// Users can override lfs_util.h with their own configuration by defining
+// LFS_CONFIG as a header file to include (-DLFS_CONFIG=lfs_config.h).
+//
+// If LFS_CONFIG is used, none of the default utils will be emitted and must be
+// provided by the config file. To start, I would suggest copying lfs_util.h
+// and modifying as needed.
+#ifdef LFS_CONFIG
 #define LFS_STRINGIZE(x) LFS_STRINGIZE2(x)
 #define LFS_STRINGIZE2(x) #x
-#include LFS_STRINGIZE(LFS_UTIL)
+#include LFS_STRINGIZE(LFS_CONFIG)
 #else
 
 // System includes
@@ -40,32 +39,11 @@
 #endif
 
 #ifdef __cplusplus
-extern "C" {
+extern "C"
+{
 #endif
 
 
-// Possible error codes, these are negative to allow valid positive
-// return values. May be redefined to system-specific error codes as long
-// as they fit in a negative integer.
-enum lfs_error {
-    LFS_ERR_OK          = 0,    // No error
-    LFS_ERR_IO          = -5,   // Error during device operation
-    LFS_ERR_CORRUPT     = -84,  // Corrupted
-    LFS_ERR_NOENT       = -2,   // No directory entry
-    LFS_ERR_EXIST       = -17,  // Entry already exists
-    LFS_ERR_NOTDIR      = -20,  // Entry is not a dir
-    LFS_ERR_ISDIR       = -21,  // Entry is a dir
-    LFS_ERR_NOTEMPTY    = -39,  // Dir is not empty
-    LFS_ERR_BADF        = -9,   // Bad file number
-    LFS_ERR_FBIG        = -27,  // File too large
-    LFS_ERR_INVAL       = -22,  // Invalid parameter
-    LFS_ERR_NOSPC       = -28,  // No space left on device
-    LFS_ERR_NOMEM       = -12,  // No more memory available
-    LFS_ERR_NOATTR      = -61,  // No data/attr available
-    LFS_ERR_NAMETOOLONG = -36,  // File name too long
-};
-
-
 // Macros, may be replaced by system specific wrappers. Arguments to these
 // macros must not have side-effects as the macros can be removed for a smaller
 // code footprint
@@ -172,8 +150,8 @@ static inline uint32_t lfs_popc(uint32_t a) {
 
 // Find the sequence comparison of a and b, this is the distance
 // between a and b ignoring overflow
-static inline int32_t lfs_scmp(uint32_t a, uint32_t b) {
-    return (int32_t)(uint32_t)(a - b);
+static inline int lfs_scmp(uint32_t a, uint32_t b) {
+    return (int)(unsigned)(a - b);
 }
 
 // Convert between 32-bit little-endian and native order
@@ -249,7 +227,7 @@ static inline void lfs_free(void *p) {
 
 
 #ifdef __cplusplus
-}
+} /* extern "C" */
 #endif
 
 #endif

scripts/readtree.py

@@ -106,7 +106,7 @@ def main(args):
             struct.unpack('<HH', superblock[1].data[0:4].ljust(4, b'\xff'))))
     print("%-47s%s" % ("littlefs v%s.%s" % version,
         "data (truncated, if it fits)"
-        if not any([args.no_truncate, args.tags, args.log, args.all]) else ""))
+        if not any([args.no_truncate, args.log, args.all]) else ""))
 
     # print gstate
     print("gstate 0x%s" % ''.join('%02x' % c for c in gstate))

scripts/test.py

@@ -34,43 +34,13 @@ $(foreach target,$(SRC),$(eval $(FLATTEN)))
 %.test: %.test.o $(foreach f,$(subst /,.,$(SRC:.c=.o)),%.$f)
     $(CC) $(CFLAGS) $^ $(LFLAGS) -o $@
 """
-BEFORE_MAIN = """
-const char *lfs_testbd_path;
-uint32_t lfs_testbd_cycles;
-
-int lfs_testbd_readctx(void *ctx, lfs_block_t block,
-        lfs_off_t off, void *buffer, lfs_size_t size) {
-    return lfs_testbd_read((lfs_testbd_t*)ctx, block, off, buffer, size);
-}
-
-int lfs_testbd_progctx(void *ctx, lfs_block_t block,
-        lfs_off_t off, const void *buffer, lfs_size_t size) {
-    return lfs_testbd_prog((lfs_testbd_t*)ctx, block, off, buffer, size);
-}
-
-int lfs_testbd_erasectx(void *ctx, lfs_block_t block) {
-    return lfs_testbd_erase((lfs_testbd_t*)ctx, block);
-}
-
-int lfs_testbd_syncctx(void *ctx) {
-    return lfs_testbd_sync((lfs_testbd_t*)ctx);
-}
-"""
-BEFORE_TESTS = """
+GLOBALS = """
 //////////////// AUTOGENERATED TEST ////////////////
 #include "lfs.h"
 #include "bd/lfs_testbd.h"
 #include <stdio.h>
-
 extern const char *lfs_testbd_path;
 extern uint32_t lfs_testbd_cycles;
-
-extern int lfs_testbd_readctx(void *ctx, lfs_block_t block,
-        lfs_off_t off, void *buffer, lfs_size_t size);
-extern int lfs_testbd_progctx(void *ctx, lfs_block_t block,
-        lfs_off_t off, const void *buffer, lfs_size_t size);
-extern int lfs_testbd_erasectx(void *ctx, lfs_block_t block);
-extern int lfs_testbd_syncctx(void *ctx);
 """
 DEFINES = {
     'LFS_READ_SIZE': 16,
@@ -96,12 +66,12 @@ PROLOGUE = """
     __attribute__((unused)) lfs_size_t size;
     __attribute__((unused)) int err;
     
-    __attribute__((unused)) const struct lfs_cfg cfg = {
-        .ctx            = &bd,
-        .read           = lfs_testbd_readctx,
-        .prog           = lfs_testbd_progctx,
-        .erase          = lfs_testbd_erasectx,
-        .sync           = lfs_testbd_syncctx,
+    __attribute__((unused)) const struct lfs_config cfg = {
+        .context        = &bd,
+        .read           = lfs_testbd_read,
+        .prog           = lfs_testbd_prog,
+        .erase          = lfs_testbd_erase,
+        .sync           = lfs_testbd_sync,
         .read_size      = LFS_READ_SIZE,
         .prog_size      = LFS_PROG_SIZE,
         .block_size     = LFS_BLOCK_SIZE,
@@ -111,22 +81,18 @@ PROLOGUE = """
         .lookahead_size = LFS_LOOKAHEAD_SIZE,
     };
 
-    __attribute__((unused)) const struct lfs_testbd_cfg bdcfg = {
-        .read_size          = LFS_READ_SIZE,
-        .prog_size          = LFS_PROG_SIZE,
-        .erase_size         = LFS_BLOCK_SIZE,
-        .erase_count        = LFS_BLOCK_COUNT,
+    __attribute__((unused)) const struct lfs_testbd_config bdcfg = {
         .erase_value        = LFS_ERASE_VALUE,
         .erase_cycles       = LFS_ERASE_CYCLES,
         .badblock_behavior  = LFS_BADBLOCK_BEHAVIOR,
         .power_cycles       = lfs_testbd_cycles,
     };
 
-    lfs_testbd_createcfg(&bd, lfs_testbd_path, &bdcfg) => 0;
+    lfs_testbd_createcfg(&cfg, lfs_testbd_path, &bdcfg) => 0;
 """
 EPILOGUE = """
     // epilogue
-    lfs_testbd_destroy(&bd) => 0;
+    lfs_testbd_destroy(&cfg) => 0;
 """
 PASS = '\033[32m✓\033[0m'
 FAIL = '\033[31m✗\033[0m'
@@ -502,7 +468,7 @@ class TestSuite:
     def build(self, **args):
         # build test files
         tf = open(self.path + '.test.c.t', 'w')
-        tf.write(BEFORE_TESTS)
+        tf.write(GLOBALS)
         if self.code is not None:
             tf.write('#line %d "%s"\n' % (self.code_lineno, self.path))
             tf.write(self.code)
@@ -517,13 +483,14 @@ class TestSuite:
                     for line in f:
                         tfs[case.in_].write(line)
                 tfs[case.in_].write('\n')
-                tfs[case.in_].write(BEFORE_TESTS)
+                tfs[case.in_].write(GLOBALS)
 
             tfs[case.in_].write('\n')
             case.build(tfs[case.in_], **args)
 
-        tf.write(BEFORE_MAIN)
         tf.write('\n')
+        tf.write('const char *lfs_testbd_path;\n')
+        tf.write('uint32_t lfs_testbd_cycles;\n')
         tf.write('int main(int argc, char **argv) {\n')
         tf.write(4*' '+'int case_         = (argc > 1) ? atoi(argv[1]) : 0;\n')
         tf.write(4*' '+'int perm          = (argc > 2) ? atoi(argv[2]) : 0;\n')

tests/test_alloc.toml

@@ -9,12 +9,12 @@ code = '''
     const char *names[FILES] = {"bacon", "eggs", "pancakes"};
     lfs_file_t files[FILES];
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "breakfast") => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int n = 0; n < FILES; n++) {
         sprintf(path, "breakfast/%s", names[n]);
         lfs_file_open(&lfs, &files[n], path,
@@ -31,7 +31,7 @@ code = '''
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int n = 0; n < FILES; n++) {
         sprintf(path, "breakfast/%s", names[n]);
         lfs_file_open(&lfs, &file, path, LFS_O_RDONLY) => 0;
@@ -51,13 +51,13 @@ define.SIZE = '(((LFS_BLOCK_SIZE-8)*(LFS_BLOCK_COUNT-6)) / FILES)'
 code = '''
     const char *names[FILES] = {"bacon", "eggs", "pancakes"};
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "breakfast") => 0;
     lfs_unmount(&lfs) => 0;
 
     for (int n = 0; n < FILES; n++) {
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         sprintf(path, "breakfast/%s", names[n]);
         lfs_file_open(&lfs, &file, path,
                 LFS_O_WRONLY | LFS_O_CREAT | LFS_O_APPEND) => 0;
@@ -70,7 +70,7 @@ code = '''
         lfs_unmount(&lfs) => 0;
     }
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int n = 0; n < FILES; n++) {
         sprintf(path, "breakfast/%s", names[n]);
         lfs_file_open(&lfs, &file, path, LFS_O_RDONLY) => 0;
@@ -92,14 +92,14 @@ code = '''
     const char *names[FILES] = {"bacon", "eggs", "pancakes"};
     lfs_file_t files[FILES];
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     for (int c = 0; c < CYCLES; c++) {
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         lfs_mkdir(&lfs, "breakfast") => 0;
         lfs_unmount(&lfs) => 0;
 
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (int n = 0; n < FILES; n++) {
             sprintf(path, "breakfast/%s", names[n]);
             lfs_file_open(&lfs, &files[n], path,
@@ -116,7 +116,7 @@ code = '''
         }
         lfs_unmount(&lfs) => 0;
 
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (int n = 0; n < FILES; n++) {
             sprintf(path, "breakfast/%s", names[n]);
             lfs_file_open(&lfs, &file, path, LFS_O_RDONLY) => 0;
@@ -129,7 +129,7 @@ code = '''
         }
         lfs_unmount(&lfs) => 0;
 
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (int n = 0; n < FILES; n++) {
             sprintf(path, "breakfast/%s", names[n]);
             lfs_remove(&lfs, path) => 0;
@@ -146,15 +146,15 @@ define.CYCLES = [1, 10]
 code = '''
     const char *names[FILES] = {"bacon", "eggs", "pancakes"};
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     for (int c = 0; c < CYCLES; c++) {
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         lfs_mkdir(&lfs, "breakfast") => 0;
         lfs_unmount(&lfs) => 0;
 
         for (int n = 0; n < FILES; n++) {
-            lfs_mountcfg(&lfs, &cfg) => 0;
+            lfs_mount(&lfs, &cfg) => 0;
             sprintf(path, "breakfast/%s", names[n]);
             lfs_file_open(&lfs, &file, path,
                     LFS_O_WRONLY | LFS_O_CREAT | LFS_O_APPEND) => 0;
@@ -167,7 +167,7 @@ code = '''
             lfs_unmount(&lfs) => 0;
         }
 
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (int n = 0; n < FILES; n++) {
             sprintf(path, "breakfast/%s", names[n]);
             lfs_file_open(&lfs, &file, path, LFS_O_RDONLY) => 0;
@@ -180,7 +180,7 @@ code = '''
         }
         lfs_unmount(&lfs) => 0;
 
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (int n = 0; n < FILES; n++) {
             sprintf(path, "breakfast/%s", names[n]);
             lfs_remove(&lfs, path) => 0;
@@ -192,8 +192,8 @@ code = '''
 
 [[case]] # exhaustion test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "exhaustion", LFS_O_WRONLY | LFS_O_CREAT);
     size = strlen("exhaustion");
     memcpy(buffer, "exhaustion", size);
@@ -216,7 +216,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "exhaustion", LFS_O_RDONLY);
     size = strlen("exhaustion");
     lfs_file_size(&lfs, &file) => size;
@@ -229,8 +229,8 @@ code = '''
 [[case]] # exhaustion wraparound test
 define.SIZE = '(((LFS_BLOCK_SIZE-8)*(LFS_BLOCK_COUNT-4)) / 3)'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     lfs_file_open(&lfs, &file, "padding", LFS_O_WRONLY | LFS_O_CREAT);
     size = strlen("buffering");
@@ -263,7 +263,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "exhaustion", LFS_O_RDONLY);
     size = strlen("exhaustion");
     lfs_file_size(&lfs, &file) => size;
@@ -276,8 +276,8 @@ code = '''
 
 [[case]] # dir exhaustion test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // find out max file size
     lfs_mkdir(&lfs, "exhaustiondir") => 0;
@@ -328,8 +328,8 @@ in = "lfs.c"
 define.LFS_ERASE_CYCLES = 0xffffffff
 define.LFS_BADBLOCK_BEHAVIOR = 'LFS_TESTBD_BADBLOCK_READERROR'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     // first fill to exhaustion to find available space
     lfs_file_open(&lfs, &file, "pacman", LFS_O_WRONLY | LFS_O_CREAT) => 0;
     strcpy((char*)buffer, "waka");
@@ -358,11 +358,11 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // remount to force an alloc scan
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // but mark the head of our file as a "bad block", this is force our
     // scan to bail early
-    lfs_testbd_setwear(&bd, fileblock, 0xffffffff) => 0;
+    lfs_testbd_setwear(&cfg, fileblock, 0xffffffff) => 0;
     lfs_file_open(&lfs, &file, "ghost", LFS_O_WRONLY | LFS_O_CREAT) => 0;
     strcpy((char*)buffer, "chomp");
     size = strlen("chomp");
@@ -377,7 +377,7 @@ code = '''
 
     // now reverse the "bad block" and try to write the file again until we
     // run out of space
-    lfs_testbd_setwear(&bd, fileblock, 0) => 0;
+    lfs_testbd_setwear(&cfg, fileblock, 0) => 0;
     lfs_file_open(&lfs, &file, "ghost", LFS_O_WRONLY | LFS_O_CREAT) => 0;
     strcpy((char*)buffer, "chomp");
     size = strlen("chomp");
@@ -393,7 +393,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // check that the disk isn't hurt
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "pacman", LFS_O_RDONLY) => 0;
     strcpy((char*)buffer, "waka");
     size = strlen("waka");
@@ -416,8 +416,8 @@ define.LFS_BLOCK_SIZE = 512
 define.LFS_BLOCK_COUNT = 1024
 if = 'LFS_BLOCK_SIZE == 512 && LFS_BLOCK_COUNT == 1024'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // find out max file size
     lfs_mkdir(&lfs, "exhaustiondir") => 0;
@@ -487,8 +487,8 @@ define.LFS_BLOCK_SIZE = 512
 define.LFS_BLOCK_COUNT = 1024
 if = 'LFS_BLOCK_SIZE == 512 && LFS_BLOCK_COUNT == 1024'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // create one block hole for half a directory
     lfs_file_open(&lfs, &file, "bump", LFS_O_WRONLY | LFS_O_CREAT) => 0;
@@ -510,7 +510,7 @@ code = '''
 
     // remount to force reset of lookahead
     lfs_unmount(&lfs) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // open hole
     lfs_remove(&lfs, "bump") => 0;
@@ -532,8 +532,8 @@ define.LFS_BLOCK_SIZE = 512
 define.LFS_BLOCK_COUNT = 1024
 if = 'LFS_BLOCK_SIZE == 512 && LFS_BLOCK_COUNT == 1024'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // fill completely with two files
     lfs_file_open(&lfs, &file, "exhaustion1",
@@ -560,7 +560,7 @@ code = '''
 
     // remount to force reset of lookahead
     lfs_unmount(&lfs) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // rewrite one file
     lfs_file_open(&lfs, &file, "exhaustion1",
@@ -597,8 +597,8 @@ define.LFS_BLOCK_SIZE = 512
 define.LFS_BLOCK_COUNT = 1024
 if = 'LFS_BLOCK_SIZE == 512 && LFS_BLOCK_COUNT == 1024'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // fill completely with two files
     lfs_file_open(&lfs, &file, "exhaustion1",
@@ -625,7 +625,7 @@ code = '''
 
     // remount to force reset of lookahead
     lfs_unmount(&lfs) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // rewrite one file with a hole of one block
     lfs_file_open(&lfs, &file, "exhaustion1",

tests/test_attrs.toml

@@ -1,14 +1,14 @@
 [[case]] # set/get attribute
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "hello") => 0;
     lfs_file_open(&lfs, &file, "hello/hello", LFS_O_WRONLY | LFS_O_CREAT) => 0;
     lfs_file_write(&lfs, &file, "hello", strlen("hello")) => strlen("hello");
     lfs_file_close(&lfs, &file);
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     memset(buffer, 0, sizeof(buffer));
     lfs_setattr(&lfs, "hello", 'A', "aaaa",   4) => 0;
     lfs_setattr(&lfs, "hello", 'B', "bbbbbb", 6) => 0;
@@ -60,7 +60,7 @@ code = '''
 
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     memset(buffer, 0, sizeof(buffer));
     lfs_getattr(&lfs, "hello", 'A', buffer,    4) => 4;
     lfs_getattr(&lfs, "hello", 'B', buffer+4,  9) => 9;
@@ -78,15 +78,15 @@ code = '''
 
 [[case]] # set/get root attribute
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "hello") => 0;
     lfs_file_open(&lfs, &file, "hello/hello", LFS_O_WRONLY | LFS_O_CREAT) => 0;
     lfs_file_write(&lfs, &file, "hello", strlen("hello")) => strlen("hello");
     lfs_file_close(&lfs, &file);
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     memset(buffer, 0, sizeof(buffer));
     lfs_setattr(&lfs, "/", 'A', "aaaa",   4) => 0;
     lfs_setattr(&lfs, "/", 'B', "bbbbbb", 6) => 0;
@@ -137,7 +137,7 @@ code = '''
     lfs_getattr(&lfs, "/", 'C', buffer+10, 5) => 5;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     memset(buffer, 0, sizeof(buffer));
     lfs_getattr(&lfs, "/", 'A', buffer,    4) => 4;
     lfs_getattr(&lfs, "/", 'B', buffer+4,  9) => 9;
@@ -155,22 +155,22 @@ code = '''
 
 [[case]] # set/get file attribute
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "hello") => 0;
     lfs_file_open(&lfs, &file, "hello/hello", LFS_O_WRONLY | LFS_O_CREAT) => 0;
     lfs_file_write(&lfs, &file, "hello", strlen("hello")) => strlen("hello");
     lfs_file_close(&lfs, &file);
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     memset(buffer, 0, sizeof(buffer));
     struct lfs_attr attrs1[] = {
         {'A', buffer,    4},
         {'B', buffer+4,  6},
         {'C', buffer+10, 5},
     };
-    struct lfs_file_cfg cfg1 = {.attrs=attrs1, .attr_count=3};
+    struct lfs_file_config cfg1 = {.attrs=attrs1, .attr_count=3};
 
     lfs_file_opencfg(&lfs, &file, "hello/hello", LFS_O_WRONLY, &cfg1) => 0;
     memcpy(buffer,    "aaaa",   4);
@@ -228,7 +228,7 @@ code = '''
         {'B', buffer+4,  9},
         {'C', buffer+13, 5},
     };
-    struct lfs_file_cfg cfg2 = {.attrs=attrs2, .attr_count=3};
+    struct lfs_file_config cfg2 = {.attrs=attrs2, .attr_count=3};
     lfs_file_opencfg(&lfs, &file, "hello/hello", LFS_O_RDWR, &cfg2) => 0;
     memcpy(buffer+4,  "fffffffff", 9);
     lfs_file_close(&lfs, &file) => 0;
@@ -238,14 +238,14 @@ code = '''
 
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     memset(buffer, 0, sizeof(buffer));
     struct lfs_attr attrs3[] = {
         {'A', buffer,    4},
         {'B', buffer+4,  9},
         {'C', buffer+13, 5},
     };
-    struct lfs_file_cfg cfg3 = {.attrs=attrs3, .attr_count=3};
+    struct lfs_file_config cfg3 = {.attrs=attrs3, .attr_count=3};
 
     lfs_file_opencfg(&lfs, &file, "hello/hello", LFS_O_RDONLY, &cfg3) => 0;
     lfs_file_close(&lfs, &file) => 0;
@@ -262,15 +262,15 @@ code = '''
 
 [[case]] # deferred file attributes
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "hello") => 0;
     lfs_file_open(&lfs, &file, "hello/hello", LFS_O_WRONLY | LFS_O_CREAT) => 0;
     lfs_file_write(&lfs, &file, "hello", strlen("hello")) => strlen("hello");
     lfs_file_close(&lfs, &file);
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_setattr(&lfs, "hello/hello", 'B', "fffffffff",  9) => 0;
     lfs_setattr(&lfs, "hello/hello", 'C', "ccccc",      5) => 0;
 
@@ -280,7 +280,7 @@ code = '''
         {'C', "",     0},
         {'D', "hhhh", 4},
     };
-    struct lfs_file_cfg cfg1 = {.attrs=attrs1, .attr_count=3};
+    struct lfs_file_config cfg1 = {.attrs=attrs1, .attr_count=3};
 
     lfs_file_opencfg(&lfs, &file, "hello/hello", LFS_O_WRONLY, &cfg1) => 0;
 

tests/test_badblocks.toml

@@ -16,12 +16,12 @@ define.NAMEMULT = 64
 define.FILEMULT = 1
 code = '''
     for (lfs_block_t badblock = 2; badblock < LFS_BLOCK_COUNT; badblock++) {
-        lfs_testbd_setwear(&bd, badblock-1, 0) => 0;
-        lfs_testbd_setwear(&bd, badblock, 0xffffffff) => 0;
+        lfs_testbd_setwear(&cfg, badblock-1, 0) => 0;
+        lfs_testbd_setwear(&cfg, badblock, 0xffffffff) => 0;
         
-        lfs_formatcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
 
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (int i = 1; i < 10; i++) {
             for (int j = 0; j < NAMEMULT; j++) {
                 buffer[j] = '0'+i;
@@ -46,7 +46,7 @@ code = '''
         }
         lfs_unmount(&lfs) => 0;
 
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (int i = 1; i < 10; i++) {
             for (int j = 0; j < NAMEMULT; j++) {
                 buffer[j] = '0'+i;
@@ -90,12 +90,12 @@ define.NAMEMULT = 64
 define.FILEMULT = 1
 code = '''
     for (lfs_block_t i = 0; i < (LFS_BLOCK_COUNT-2)/2; i++) {
-        lfs_testbd_setwear(&bd, i+2, 0xffffffff) => 0;
+        lfs_testbd_setwear(&cfg, i+2, 0xffffffff) => 0;
     }
     
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 1; i < 10; i++) {
         for (int j = 0; j < NAMEMULT; j++) {
             buffer[j] = '0'+i;
@@ -120,7 +120,7 @@ code = '''
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 1; i < 10; i++) {
         for (int j = 0; j < NAMEMULT; j++) {
             buffer[j] = '0'+i;
@@ -163,12 +163,12 @@ define.NAMEMULT = 64
 define.FILEMULT = 1
 code = '''
     for (lfs_block_t i = 0; i < (LFS_BLOCK_COUNT-2)/2; i++) {
-        lfs_testbd_setwear(&bd, (2*i) + 2, 0xffffffff) => 0;
+        lfs_testbd_setwear(&cfg, (2*i) + 2, 0xffffffff) => 0;
     }
     
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 1; i < 10; i++) {
         for (int j = 0; j < NAMEMULT; j++) {
             buffer[j] = '0'+i;
@@ -193,7 +193,7 @@ code = '''
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 1; i < 10; i++) {
         for (int j = 0; j < NAMEMULT; j++) {
             buffer[j] = '0'+i;
@@ -233,9 +233,9 @@ define.LFS_BADBLOCK_BEHAVIOR = [
     'LFS_TESTBD_BADBLOCK_ERASENOOP',
 ]
 code = '''
-    lfs_testbd_setwear(&bd, 0, 0xffffffff) => 0;
-    lfs_testbd_setwear(&bd, 1, 0xffffffff) => 0;
+    lfs_testbd_setwear(&cfg, 0, 0xffffffff) => 0;
+    lfs_testbd_setwear(&cfg, 1, 0xffffffff) => 0;
 
-    lfs_formatcfg(&lfs, &cfg) => LFS_ERR_NOSPC;
-    lfs_mountcfg(&lfs, &cfg) => LFS_ERR_CORRUPT;
+    lfs_format(&lfs, &cfg) => LFS_ERR_NOSPC;
+    lfs_mount(&lfs, &cfg) => LFS_ERR_CORRUPT;
 '''

tests/test_dirs.toml

@@ -1,15 +1,15 @@
 [[case]] # root
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
 '''
@@ -17,30 +17,30 @@ code = '''
 [[case]] # many directory creation
 define.N = 'range(0, 100, 3)'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "dir%03d", i);
         lfs_mkdir(&lfs, path) => 0;
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "dir%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_DIR);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
 '''
@@ -48,49 +48,49 @@ code = '''
 [[case]] # many directory removal
 define.N = 'range(3, 100, 11)'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "removeme%03d", i);
         lfs_mkdir(&lfs, path) => 0;
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "removeme%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_DIR);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs);
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "removeme%03d", i);
         lfs_remove(&lfs, path) => 0;
     }
     lfs_unmount(&lfs);
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
 '''
@@ -98,34 +98,34 @@ code = '''
 [[case]] # many directory rename
 define.N = 'range(3, 100, 11)'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "test%03d", i);
         lfs_mkdir(&lfs, path) => 0;
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "test%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_DIR);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs);
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         char oldpath[128];
         char newpath[128];
@@ -135,21 +135,21 @@ code = '''
     }
     lfs_unmount(&lfs);
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "tedd%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_DIR);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs);
 '''
@@ -158,10 +158,10 @@ code = '''
 define.N = [5, 11]
 reentrant = true
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
 
     for (int i = 0; i < N; i++) {
@@ -177,19 +177,19 @@ code = '''
     }
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "hi%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_DIR);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     for (int i = 0; i < N; i++) {
@@ -202,19 +202,19 @@ code = '''
     }
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "hello%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_DIR);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     for (int i = 0; i < N; i++) {
@@ -223,13 +223,13 @@ code = '''
     }
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
 '''
@@ -237,9 +237,9 @@ code = '''
 [[case]] # file creation
 define.N = 'range(3, 100, 11)'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "file%03d", i);
         lfs_file_open(&lfs, &file, path,
@@ -248,21 +248,21 @@ code = '''
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "file%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_REG);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs);
 '''
@@ -270,9 +270,9 @@ code = '''
 [[case]] # file removal
 define.N = 'range(0, 100, 3)'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "removeme%03d", i);
         lfs_file_open(&lfs, &file, path,
@@ -281,40 +281,40 @@ code = '''
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "removeme%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_REG);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs);
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "removeme%03d", i);
         lfs_remove(&lfs, path) => 0;
     }
     lfs_unmount(&lfs);
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
 '''
@@ -322,9 +322,9 @@ code = '''
 [[case]] # file rename
 define.N = 'range(0, 100, 3)'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "test%03d", i);
         lfs_file_open(&lfs, &file, path,
@@ -333,25 +333,25 @@ code = '''
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "test%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_REG);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs);
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         char oldpath[128];
         char newpath[128];
@@ -361,21 +361,21 @@ code = '''
     }
     lfs_unmount(&lfs);
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "tedd%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_REG);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs);
 '''
@@ -384,10 +384,10 @@ code = '''
 define.N = [5, 25]
 reentrant = true
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
 
     for (int i = 0; i < N; i++) {
@@ -403,19 +403,19 @@ code = '''
     }
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "hi%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_REG);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     for (int i = 0; i < N; i++) {
@@ -428,19 +428,19 @@ code = '''
     }
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "hello%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_REG);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     for (int i = 0; i < N; i++) {
@@ -449,70 +449,70 @@ code = '''
     }
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
 '''
 
 [[case]] # nested directories
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "potato") => 0;
     lfs_file_open(&lfs, &file, "burito",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "potato/baked") => 0;
     lfs_mkdir(&lfs, "potato/sweet") => 0;
     lfs_mkdir(&lfs, "potato/fried") => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "potato") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, ".") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "..") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "baked") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "fried") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "sweet") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
 
     // try removing?
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_remove(&lfs, "potato") => LFS_ERR_NOTEMPTY;
     lfs_unmount(&lfs) => 0;
 
     // try renaming?
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_rename(&lfs, "potato", "coldpotato") => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_rename(&lfs, "coldpotato", "warmpotato") => 0;
     lfs_rename(&lfs, "warmpotato", "hotpotato") => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_remove(&lfs, "potato") => LFS_ERR_NOENT;
     lfs_remove(&lfs, "coldpotato") => LFS_ERR_NOENT;
     lfs_remove(&lfs, "warmpotato") => LFS_ERR_NOENT;
@@ -520,7 +520,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // try cross-directory renaming
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "coldpotato") => 0;
     lfs_rename(&lfs, "hotpotato/baked", "coldpotato/baked") => 0;
     lfs_rename(&lfs, "coldpotato", "hotpotato") => LFS_ERR_NOTEMPTY;
@@ -536,29 +536,29 @@ code = '''
     lfs_remove(&lfs, "hotpotato") => LFS_ERR_NOTEMPTY;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "hotpotato") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, ".") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "..") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "baked") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "fried") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "sweet") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
     
     // final remove
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_remove(&lfs, "hotpotato") => LFS_ERR_NOTEMPTY;
     lfs_remove(&lfs, "hotpotato/baked") => 0;
     lfs_remove(&lfs, "hotpotato") => LFS_ERR_NOTEMPTY;
@@ -568,18 +568,18 @@ code = '''
     lfs_remove(&lfs, "hotpotato") => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, ".") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "..") == 0);
     info.type => LFS_TYPE_DIR;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "burito") == 0);
     info.type => LFS_TYPE_REG;
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
 '''
@@ -587,71 +587,71 @@ code = '''
 [[case]] # recursive remove
 define.N = [10, 100]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "prickly-pear") => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "prickly-pear/cactus%03d", i);
         lfs_mkdir(&lfs, path) => 0;
     }
     lfs_dir_open(&lfs, &dir, "prickly-pear") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "cactus%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_DIR);
         assert(strcmp(info.name, path) == 0);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs);
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_remove(&lfs, "prickly-pear") => LFS_ERR_NOTEMPTY;
 
     lfs_dir_open(&lfs, &dir, "prickly-pear") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
     for (int i = 0; i < N; i++) {
         sprintf(path, "cactus%03d", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(info.type == LFS_TYPE_DIR);
         assert(strcmp(info.name, path) == 0);
         sprintf(path, "prickly-pear/%s", info.name);
         lfs_remove(&lfs, path) => 0;
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     lfs_remove(&lfs, "prickly-pear") => 0;
     lfs_remove(&lfs, "prickly-pear") => LFS_ERR_NOENT;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_remove(&lfs, "prickly-pear") => LFS_ERR_NOENT;
     lfs_unmount(&lfs) => 0;
 '''
 
 [[case]] # other error cases
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "potato") => 0;
     lfs_file_open(&lfs, &file, "burito",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     lfs_mkdir(&lfs, "potato") => LFS_ERR_EXIST;
     lfs_mkdir(&lfs, "burito") => LFS_ERR_EXIST;
@@ -678,39 +678,39 @@ code = '''
 
     // check that errors did not corrupt directory
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_REG);
     assert(strcmp(info.name, "burito") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "potato") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     lfs_unmount(&lfs) => 0;
 
     // or on disk
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, ".") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "..") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_REG);
     assert(strcmp(info.name, "burito") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(info.type == LFS_TYPE_DIR);
     assert(strcmp(info.name, "potato") == 0);
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
 '''
@@ -718,8 +718,8 @@ code = '''
 [[case]] # directory seek
 define.COUNT = [4, 128, 132]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "hello") => 0;
     for (int i = 0; i < COUNT; i++) {
         sprintf(path, "hello/kitty%03d", i);
@@ -728,19 +728,19 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     for (int j = 2; j < COUNT; j++) {
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         lfs_dir_open(&lfs, &dir, "hello") => 0;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, ".") == 0);
         assert(info.type == LFS_TYPE_DIR);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, "..") == 0);
         assert(info.type == LFS_TYPE_DIR);
 
         lfs_soff_t pos;
         for (int i = 0; i < j; i++) {
             sprintf(path, "kitty%03d", i);
-            lfs_dir_read(&lfs, &dir, &info) => 1;
+            lfs_dir_read(&lfs, &dir, &info) => 0;
             assert(strcmp(info.name, path) == 0);
             assert(info.type == LFS_TYPE_DIR);
             pos = lfs_dir_tell(&lfs, &dir);
@@ -749,25 +749,25 @@ code = '''
 
         lfs_dir_seek(&lfs, &dir, pos) => 0;
         sprintf(path, "kitty%03d", j);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, path) == 0);
         assert(info.type == LFS_TYPE_DIR);
 
         lfs_dir_rewind(&lfs, &dir) => 0;
         sprintf(path, "kitty%03d", 0);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, ".") == 0);
         assert(info.type == LFS_TYPE_DIR);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, "..") == 0);
         assert(info.type == LFS_TYPE_DIR);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, path) == 0);
         assert(info.type == LFS_TYPE_DIR);
 
         lfs_dir_seek(&lfs, &dir, pos) => 0;
         sprintf(path, "kitty%03d", j);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, path) == 0);
         assert(info.type == LFS_TYPE_DIR);
 
@@ -779,8 +779,8 @@ code = '''
 [[case]] # root seek
 define.COUNT = [4, 128, 132]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < COUNT; i++) {
         sprintf(path, "hi%03d", i);
         lfs_mkdir(&lfs, path) => 0;
@@ -788,19 +788,19 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     for (int j = 2; j < COUNT; j++) {
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         lfs_dir_open(&lfs, &dir, "/") => 0;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, ".") == 0);
         assert(info.type == LFS_TYPE_DIR);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, "..") == 0);
         assert(info.type == LFS_TYPE_DIR);
 
         lfs_soff_t pos;
         for (int i = 0; i < j; i++) {
             sprintf(path, "hi%03d", i);
-            lfs_dir_read(&lfs, &dir, &info) => 1;
+            lfs_dir_read(&lfs, &dir, &info) => 0;
             assert(strcmp(info.name, path) == 0);
             assert(info.type == LFS_TYPE_DIR);
             pos = lfs_dir_tell(&lfs, &dir);
@@ -809,25 +809,25 @@ code = '''
 
         lfs_dir_seek(&lfs, &dir, pos) => 0;
         sprintf(path, "hi%03d", j);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, path) == 0);
         assert(info.type == LFS_TYPE_DIR);
 
         lfs_dir_rewind(&lfs, &dir) => 0;
         sprintf(path, "hi%03d", 0);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, ".") == 0);
         assert(info.type == LFS_TYPE_DIR);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, "..") == 0);
         assert(info.type == LFS_TYPE_DIR);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, path) == 0);
         assert(info.type == LFS_TYPE_DIR);
 
         lfs_dir_seek(&lfs, &dir, pos) => 0;
         sprintf(path, "hi%03d", j);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, path) == 0);
         assert(info.type == LFS_TYPE_DIR);
 

tests/test_entries.toml

@@ -10,8 +10,8 @@ code = '''
     uint8_t wbuffer[1024];
     uint8_t rbuffer[1024];
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // write hi0 20
     sprintf(path, "hi0"); size = 20;
@@ -99,8 +99,8 @@ code = '''
     uint8_t wbuffer[1024];
     uint8_t rbuffer[1024];
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // write hi0 20
     sprintf(path, "hi0"); size = 20;
@@ -188,8 +188,8 @@ code = '''
     uint8_t wbuffer[1024];
     uint8_t rbuffer[1024];
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // write hi0 200
     sprintf(path, "hi0"); size = 200;
@@ -261,8 +261,8 @@ code = '''
     uint8_t wbuffer[1024];
     uint8_t rbuffer[1024];
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // write hi0 200
     sprintf(path, "hi0"); size = 200;
@@ -350,8 +350,8 @@ code = '''
     uint8_t wbuffer[1024];
     uint8_t rbuffer[1024];
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // write hi0 200
     sprintf(path, "hi0"); size = 200;
@@ -454,8 +454,8 @@ code = '''
     uint8_t wbuffer[1024];
     uint8_t rbuffer[1024];
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     // write hi0 200
     sprintf(path, "hi0"); size = 200;
@@ -549,9 +549,9 @@ code = '''
 
 [[case]] # create too big
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     memset(path, 'm', 200);
     path[200] = '\0';
 
@@ -574,9 +574,9 @@ code = '''
 
 [[case]] # resize too big
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     memset(path, 'm', 200);
     path[200] = '\0';
 

tests/test_evil.toml

@@ -9,10 +9,10 @@ define.INVALSET = [0x3, 0x1, 0x2]
 in = "lfs.c"
 code = '''
     // create littlefs
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     // change tail-pointer to invalid pointers
-    lfs_initcommon(&lfs, &cfg) => 0;
+    lfs_init(&lfs, &cfg) => 0;
     lfs_mdir_t mdir;
     lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
     lfs_dir_commit(&lfs, &mdir, LFS_MKATTRS(
@@ -23,7 +23,7 @@ code = '''
     lfs_deinit(&lfs) => 0;
 
     // test that mount fails gracefully
-    lfs_mountcfg(&lfs, &cfg) => LFS_ERR_CORRUPT;
+    lfs_mount(&lfs, &cfg) => LFS_ERR_CORRUPT;
 '''
 
 [[case]] # invalid dir pointer test
@@ -31,14 +31,14 @@ define.INVALSET = [0x3, 0x1, 0x2]
 in = "lfs.c"
 code = '''
     // create littlefs
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
     // make a dir
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "dir_here") => 0;
     lfs_unmount(&lfs) => 0;
 
     // change the dir pointer to be invalid
-    lfs_initcommon(&lfs, &cfg) => 0;
+    lfs_init(&lfs, &cfg) => 0;
     lfs_mdir_t mdir;
     lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
     // make sure id 1 == our directory
@@ -57,7 +57,7 @@ code = '''
 
     // test that accessing our bad dir fails, note there's a number
     // of ways to access the dir, some can fail, but some don't
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "dir_here", &info) => 0;
     assert(strcmp(info.name, "dir_here") == 0);
     assert(info.type == LFS_TYPE_DIR);
@@ -77,16 +77,16 @@ in = "lfs.c"
 define.SIZE = [10, 1000, 100000] # faked file size
 code = '''
     // create littlefs
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
     // make a file
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "file_here",
             LFS_O_WRONLY | LFS_O_CREAT) => 0;
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
     // change the file pointer to be invalid
-    lfs_initcommon(&lfs, &cfg) => 0;
+    lfs_init(&lfs, &cfg) => 0;
     lfs_mdir_t mdir;
     lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
     // make sure id 1 == our file
@@ -103,7 +103,7 @@ code = '''
 
     // test that accessing our bad file fails, note there's a number
     // of ways to access the dir, some can fail, but some don't
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "file_here", &info) => 0;
     assert(strcmp(info.name, "file_here") == 0);
     assert(info.type == LFS_TYPE_REG);
@@ -125,9 +125,9 @@ define.SIZE = ['2*LFS_BLOCK_SIZE', '3*LFS_BLOCK_SIZE', '4*LFS_BLOCK_SIZE']
 in = "lfs.c"
 code = '''
     // create littlefs
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
     // make a file
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "file_here",
             LFS_O_WRONLY | LFS_O_CREAT) => 0;
     for (int i = 0; i < SIZE; i++) {
@@ -137,7 +137,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
     // change pointer in CTZ skip-list to be invalid
-    lfs_initcommon(&lfs, &cfg) => 0;
+    lfs_init(&lfs, &cfg) => 0;
     lfs_mdir_t mdir;
     lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
     // make sure id 1 == our file and get our CTZ structure
@@ -154,17 +154,17 @@ code = '''
     lfs_ctz_fromle32(&ctz);
     // rewrite block to contain bad pointer
     uint8_t bbuffer[LFS_BLOCK_SIZE];
-    lfs_testbd_read(&bd, ctz.head, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
+    cfg.read(&cfg, ctz.head, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
     uint32_t bad = lfs_tole32(0xcccccccc);
     memcpy(&bbuffer[0], &bad, sizeof(bad));
     memcpy(&bbuffer[4], &bad, sizeof(bad));
-    lfs_testbd_erase(&bd, ctz.head) => 0;
-    lfs_testbd_prog(&bd, ctz.head, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
+    cfg.erase(&cfg, ctz.head) => 0;
+    cfg.prog(&cfg, ctz.head, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
     lfs_deinit(&lfs) => 0;
 
     // test that accessing our bad file fails, note there's a number
     // of ways to access the dir, some can fail, but some don't
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "file_here", &info) => 0;
     assert(strcmp(info.name, "file_here") == 0);
     assert(info.type == LFS_TYPE_REG);
@@ -187,10 +187,10 @@ define.INVALSET = [0x3, 0x1, 0x2]
 in = "lfs.c"
 code = '''
     // create littlefs
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     // create an invalid gstate
-    lfs_initcommon(&lfs, &cfg) => 0;
+    lfs_init(&lfs, &cfg) => 0;
     lfs_mdir_t mdir;
     lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
     lfs_fs_prepmove(&lfs, 1, (lfs_block_t [2]){
@@ -202,7 +202,7 @@ code = '''
     // test that mount fails gracefully
     // mount may not fail, but our first alloc should fail when
     // we try to fix the gstate
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "should_fail") => LFS_ERR_CORRUPT;
     lfs_unmount(&lfs) => 0;
 '''
@@ -213,10 +213,10 @@ code = '''
 in = "lfs.c"
 code = '''
     // create littlefs
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     // change tail-pointer to point to ourself
-    lfs_initcommon(&lfs, &cfg) => 0;
+    lfs_init(&lfs, &cfg) => 0;
     lfs_mdir_t mdir;
     lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
     lfs_dir_commit(&lfs, &mdir, LFS_MKATTRS(
@@ -225,20 +225,20 @@ code = '''
     lfs_deinit(&lfs) => 0;
 
     // test that mount fails gracefully
-    lfs_mountcfg(&lfs, &cfg) => LFS_ERR_CORRUPT;
+    lfs_mount(&lfs, &cfg) => LFS_ERR_CORRUPT;
 '''
 
 [[case]] # metadata-pair threaded-list 2-length loop test
 in = "lfs.c"
 code = '''
     // create littlefs with child dir
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "child") => 0;
     lfs_unmount(&lfs) => 0;
 
     // find child
-    lfs_initcommon(&lfs, &cfg) => 0;
+    lfs_init(&lfs, &cfg) => 0;
     lfs_mdir_t mdir;
     lfs_block_t pair[2];
     lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
@@ -255,20 +255,20 @@ code = '''
     lfs_deinit(&lfs) => 0;
 
     // test that mount fails gracefully
-    lfs_mountcfg(&lfs, &cfg) => LFS_ERR_CORRUPT;
+    lfs_mount(&lfs, &cfg) => LFS_ERR_CORRUPT;
 '''
 
 [[case]] # metadata-pair threaded-list 1-length child loop test
 in = "lfs.c"
 code = '''
     // create littlefs with child dir
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "child") => 0;
     lfs_unmount(&lfs) => 0;
 
     // find child
-    lfs_initcommon(&lfs, &cfg) => 0;
+    lfs_init(&lfs, &cfg) => 0;
     lfs_mdir_t mdir;
     lfs_block_t pair[2];
     lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
@@ -284,5 +284,5 @@ code = '''
     lfs_deinit(&lfs) => 0;
 
     // test that mount fails gracefully
-    lfs_mountcfg(&lfs, &cfg) => LFS_ERR_CORRUPT;
+    lfs_mount(&lfs, &cfg) => LFS_ERR_CORRUPT;
 '''

tests/test_exhaustion.toml

@@ -11,14 +11,14 @@ define.LFS_BADBLOCK_BEHAVIOR = [
 ]
 define.FILES = 10
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "roadrunner") => 0;
     lfs_unmount(&lfs) => 0;
 
     uint32_t cycle = 0;
     while (true) {
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (uint32_t i = 0; i < FILES; i++) {
             // chose name, roughly random seed, and random 2^n size
             sprintf(path, "roadrunner/test%d", i);
@@ -71,7 +71,7 @@ code = '''
 
 exhausted:
     // should still be readable
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (uint32_t i = 0; i < FILES; i++) {
         // check for errors
         sprintf(path, "roadrunner/test%d", i);
@@ -96,11 +96,11 @@ define.LFS_BADBLOCK_BEHAVIOR = [
 ]
 define.FILES = 10
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     uint32_t cycle = 0;
     while (true) {
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (uint32_t i = 0; i < FILES; i++) {
             // chose name, roughly random seed, and random 2^n size
             sprintf(path, "test%d", i);
@@ -153,7 +153,7 @@ code = '''
 
 exhausted:
     // should still be readable
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (uint32_t i = 0; i < FILES; i++) {
         // check for errors
         sprintf(path, "test%d", i);
@@ -180,18 +180,18 @@ code = '''
 
     for (int run = 0; run < 2; run++) {
         for (lfs_block_t b = 0; b < LFS_BLOCK_COUNT; b++) {
-            lfs_testbd_setwear(&bd, b,
+            lfs_testbd_setwear(&cfg, b,
                     (b < run_block_count[run]) ? 0 : LFS_ERASE_CYCLES) => 0;
         }
 
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         lfs_mkdir(&lfs, "roadrunner") => 0;
         lfs_unmount(&lfs) => 0;
 
         uint32_t cycle = 0;
         while (true) {
-            lfs_mountcfg(&lfs, &cfg) => 0;
+            lfs_mount(&lfs, &cfg) => 0;
             for (uint32_t i = 0; i < FILES; i++) {
                 // chose name, roughly random seed, and random 2^n size
                 sprintf(path, "roadrunner/test%d", i);
@@ -244,7 +244,7 @@ code = '''
 
 exhausted:
         // should still be readable
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (uint32_t i = 0; i < FILES; i++) {
             // check for errors
             sprintf(path, "roadrunner/test%d", i);
@@ -272,15 +272,15 @@ code = '''
 
     for (int run = 0; run < 2; run++) {
         for (lfs_block_t b = 0; b < LFS_BLOCK_COUNT; b++) {
-            lfs_testbd_setwear(&bd, b,
+            lfs_testbd_setwear(&cfg, b,
                     (b < run_block_count[run]) ? 0 : LFS_ERASE_CYCLES) => 0;
         }
 
-        lfs_formatcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
 
         uint32_t cycle = 0;
         while (true) {
-            lfs_mountcfg(&lfs, &cfg) => 0;
+            lfs_mount(&lfs, &cfg) => 0;
             for (uint32_t i = 0; i < FILES; i++) {
                 // chose name, roughly random seed, and random 2^n size
                 sprintf(path, "test%d", i);
@@ -333,7 +333,7 @@ code = '''
 
 exhausted:
         // should still be readable
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (uint32_t i = 0; i < FILES; i++) {
             // check for errors
             sprintf(path, "test%d", i);
@@ -358,14 +358,14 @@ define.CYCLES = 100
 define.FILES = 10
 if = 'LFS_BLOCK_CYCLES < CYCLES/10'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "roadrunner") => 0;
     lfs_unmount(&lfs) => 0;
 
     uint32_t cycle = 0;
     while (cycle < CYCLES) {
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         for (uint32_t i = 0; i < FILES; i++) {
             // chose name, roughly random seed, and random 2^n size
             sprintf(path, "roadrunner/test%d", i);
@@ -418,7 +418,7 @@ code = '''
 
 exhausted:
     // should still be readable
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (uint32_t i = 0; i < FILES; i++) {
         // check for errors
         sprintf(path, "roadrunner/test%d", i);
@@ -434,7 +434,7 @@ exhausted:
     lfs_testbd_wear_t maxwear = 0;
     // skip 0 and 1 as superblock movement is intentionally avoided
     for (lfs_block_t b = 2; b < LFS_BLOCK_COUNT; b++) {
-        lfs_testbd_wear_t wear = lfs_testbd_getwear(&bd, b);
+        lfs_testbd_wear_t wear = lfs_testbd_getwear(&cfg, b);
         printf("%08x: wear %d\n", b, wear);
         assert(wear >= 0);
         if (wear < minwear) {
@@ -453,7 +453,7 @@ exhausted:
     // find standard deviation^2
     lfs_testbd_wear_t dev2 = 0;
     for (lfs_block_t b = 2; b < LFS_BLOCK_COUNT; b++) {
-        lfs_testbd_wear_t wear = lfs_testbd_getwear(&bd, b);
+        lfs_testbd_wear_t wear = lfs_testbd_getwear(&cfg, b);
         assert(wear >= 0);
         lfs_testbd_swear_t diff = wear - avgwear;
         dev2 += diff*diff;

tests/test_files.toml

@@ -1,8 +1,8 @@
 
 [[case]] # simple file test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "hello",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
     size = strlen("Hello World!")+1;
@@ -11,7 +11,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "hello", LFS_O_RDONLY) => 0;
     lfs_file_read(&lfs, &file, buffer, size) => size;
     assert(strcmp((char*)buffer, "Hello World!") == 0);
@@ -23,10 +23,10 @@ code = '''
 define.SIZE = [32, 8192, 262144, 0, 7, 8193]
 define.CHUNKSIZE = [31, 16, 33, 1, 1023]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     // write
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
     srand(1);
@@ -41,7 +41,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // read
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => SIZE;
     srand(1);
@@ -62,10 +62,10 @@ define.SIZE1 = [32, 8192, 131072, 0, 7, 8193]
 define.SIZE2 = [32, 8192, 131072, 0, 7, 8193]
 define.CHUNKSIZE = [31, 16, 1]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     // write
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
     srand(1);
@@ -80,7 +80,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // read
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => SIZE1;
     srand(1);
@@ -96,7 +96,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // rewrite
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_WRONLY) => 0;
     srand(2);
     for (lfs_size_t i = 0; i < SIZE2; i += CHUNKSIZE) {
@@ -110,7 +110,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // read
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => lfs_max(SIZE1, SIZE2);
     srand(2);
@@ -144,10 +144,10 @@ define.SIZE1 = [32, 8192, 131072, 0, 7, 8193]
 define.SIZE2 = [32, 8192, 131072, 0, 7, 8193]
 define.CHUNKSIZE = [31, 16, 1]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     // write
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
     srand(1);
@@ -162,7 +162,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // read
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => SIZE1;
     srand(1);
@@ -178,7 +178,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // append
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_WRONLY | LFS_O_APPEND) => 0;
     srand(2);
     for (lfs_size_t i = 0; i < SIZE2; i += CHUNKSIZE) {
@@ -192,7 +192,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // read
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => SIZE1 + SIZE2;
     srand(1);
@@ -221,10 +221,10 @@ define.SIZE1 = [32, 8192, 131072, 0, 7, 8193]
 define.SIZE2 = [32, 8192, 131072, 0, 7, 8193]
 define.CHUNKSIZE = [31, 16, 1]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 
     // write
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
     srand(1);
@@ -239,7 +239,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // read
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => SIZE1;
     srand(1);
@@ -255,7 +255,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // truncate
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_WRONLY | LFS_O_TRUNC) => 0;
     srand(2);
     for (lfs_size_t i = 0; i < SIZE2; i += CHUNKSIZE) {
@@ -269,7 +269,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // read
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "avacado", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => SIZE2;
     srand(2);
@@ -290,10 +290,10 @@ define.SIZE = [32, 0, 7, 2049]
 define.CHUNKSIZE = [31, 16, 65]
 reentrant = true
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
 
     err = lfs_file_open(&lfs, &file, "avacado", LFS_O_RDONLY);
@@ -344,10 +344,10 @@ define = [
 ]
 reentrant = true
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
 
     err = lfs_file_open(&lfs, &file, "avacado", LFS_O_RDONLY);
@@ -406,9 +406,9 @@ code = '''
 [[case]] # many files
 define.N = 300
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
     // create N files of 7 bytes
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "file_%03d", i);
         lfs_file_open(&lfs, &file, path,
@@ -431,9 +431,9 @@ code = '''
 [[case]] # many files with power cycle
 define.N = 300
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
     // create N files of 7 bytes
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         sprintf(path, "file_%03d", i);
         lfs_file_open(&lfs, &file, path,
@@ -446,7 +446,7 @@ code = '''
         lfs_unmount(&lfs) => 0;
 
         char rbuffer[1024];
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         lfs_file_open(&lfs, &file, path, LFS_O_RDONLY) => 0;
         lfs_file_read(&lfs, &file, rbuffer, size) => size;
         assert(strcmp(rbuffer, wbuffer) == 0);
@@ -459,10 +459,10 @@ code = '''
 define.N = 300
 reentrant = true
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
     // create N files of 7 bytes
     for (int i = 0; i < N; i++) {

tests/test_interspersed.toml

@@ -5,8 +5,8 @@ define.FILES = [4, 10, 26]
 code = '''
     lfs_file_t files[FILES];
     const char alphas[] = "abcdefghijklmnopqrstuvwxyz";
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int j = 0; j < FILES; j++) {
         sprintf(path, "%c", alphas[j]);
         lfs_file_open(&lfs, &files[j], path,
@@ -24,20 +24,20 @@ code = '''
     }
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, ".") == 0);
     assert(info.type == LFS_TYPE_DIR);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "..") == 0);
     assert(info.type == LFS_TYPE_DIR);
     for (int j = 0; j < FILES; j++) {
         sprintf(path, "%c", alphas[j]);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, path) == 0);
         assert(info.type == LFS_TYPE_REG);
         assert(info.size == SIZE);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     for (int j = 0; j < FILES; j++) {
@@ -64,8 +64,8 @@ define.SIZE = [10, 100]
 define.FILES = [4, 10, 26]
 code = '''
     const char alphas[] = "abcdefghijklmnopqrstuvwxyz";
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int j = 0; j < FILES; j++) {
         sprintf(path, "%c", alphas[j]);
         lfs_file_open(&lfs, &file, path,
@@ -77,7 +77,7 @@ code = '''
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "zzz", LFS_O_WRONLY | LFS_O_CREAT) => 0;
     for (int j = 0; j < FILES; j++) {
         lfs_file_write(&lfs, &file, (const void*)"~", 1) => 1;
@@ -89,17 +89,17 @@ code = '''
     lfs_file_close(&lfs, &file);
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, ".") == 0);
     assert(info.type == LFS_TYPE_DIR);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "..") == 0);
     assert(info.type == LFS_TYPE_DIR);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "zzz") == 0);
     assert(info.type == LFS_TYPE_REG);
     assert(info.size == FILES);
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     lfs_file_open(&lfs, &file, "zzz", LFS_O_RDONLY) => 0;
@@ -115,8 +115,8 @@ code = '''
 [[case]] # remove inconveniently test
 define.SIZE = [10, 100]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_t files[3];
     lfs_file_open(&lfs, &files[0], "e", LFS_O_WRONLY | LFS_O_CREAT) => 0;
     lfs_file_open(&lfs, &files[1], "f", LFS_O_WRONLY | LFS_O_CREAT) => 0;
@@ -141,21 +141,21 @@ code = '''
     lfs_file_close(&lfs, &files[2]);
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, ".") == 0);
     assert(info.type == LFS_TYPE_DIR);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "..") == 0);
     assert(info.type == LFS_TYPE_DIR);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "e") == 0);
     assert(info.type == LFS_TYPE_REG);
     assert(info.size == SIZE);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "g") == 0);
     assert(info.type == LFS_TYPE_REG);
     assert(info.size == SIZE);
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     lfs_file_open(&lfs, &files[0], "e", LFS_O_RDONLY) => 0;
@@ -180,10 +180,10 @@ code = '''
     lfs_file_t files[FILES];
     const char alphas[] = "abcdefghijklmnopqrstuvwxyz";
 
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
 
     for (int j = 0; j < FILES; j++) {
@@ -208,20 +208,20 @@ code = '''
     }
 
     lfs_dir_open(&lfs, &dir, "/") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, ".") == 0);
     assert(info.type == LFS_TYPE_DIR);
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     assert(strcmp(info.name, "..") == 0);
     assert(info.type == LFS_TYPE_DIR);
     for (int j = 0; j < FILES; j++) {
         sprintf(path, "%c", alphas[j]);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         assert(strcmp(info.name, path) == 0);
         assert(info.type == LFS_TYPE_REG);
         assert(info.size == SIZE);
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
 
     for (int j = 0; j < FILES; j++) {

tests/test_orphans.toml

@@ -2,8 +2,8 @@
 in = "lfs.c"
 if = 'LFS_PROG_SIZE <= 0x3fe' # only works with one crc per commit
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "parent") => 0;
     lfs_mkdir(&lfs, "parent/orphan") => 0;
     lfs_mkdir(&lfs, "parent/child") => 0;
@@ -13,29 +13,29 @@ code = '''
     // corrupt the child's most recent commit, this should be the update
     // to the linked-list entry, which should orphan the orphan. Note this
     // makes a lot of assumptions about the remove operation.
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "parent/child") => 0;
     lfs_block_t block = dir.m.pair[0];
     lfs_dir_close(&lfs, &dir) => 0;
     lfs_unmount(&lfs) => 0;
     uint8_t bbuffer[LFS_BLOCK_SIZE];
-    lfs_testbd_read(&bd, block, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
+    cfg.read(&cfg, block, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
     int off = LFS_BLOCK_SIZE-1;
     while (off >= 0 && bbuffer[off] == LFS_ERASE_VALUE) {
         off -= 1;
     }
     memset(&bbuffer[off-3], LFS_BLOCK_SIZE, 3);
-    lfs_testbd_erase(&bd, block) => 0;
-    lfs_testbd_prog(&bd, block, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
-    lfs_testbd_sync(&bd) => 0;
+    cfg.erase(&cfg, block) => 0;
+    cfg.prog(&cfg, block, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
+    cfg.sync(&cfg) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "parent/orphan", &info) => LFS_ERR_NOENT;
     lfs_stat(&lfs, "parent/child", &info) => 0;
     lfs_fs_size(&lfs) => 8;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "parent/orphan", &info) => LFS_ERR_NOENT;
     lfs_stat(&lfs, "parent/child", &info) => 0;
     lfs_fs_size(&lfs) => 8;
@@ -48,7 +48,7 @@ code = '''
     lfs_fs_size(&lfs) => 8;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "parent/orphan", &info) => LFS_ERR_NOENT;
     lfs_stat(&lfs, "parent/child", &info) => 0;
     lfs_stat(&lfs, "parent/otherchild", &info) => 0;
@@ -66,10 +66,10 @@ define = [
     {FILES=3,  DEPTH=3, CYCLES=20},
 ]
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
 
     srand(1);

tests/test_paths.toml

@@ -1,8 +1,8 @@
 
 [[case]] # simple path test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "tea") => 0;
     lfs_mkdir(&lfs, "tea/hottea") => 0;
     lfs_mkdir(&lfs, "tea/warmtea") => 0;
@@ -23,8 +23,8 @@ code = '''
 
 [[case]] # redundant slashes
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "tea") => 0;
     lfs_mkdir(&lfs, "tea/hottea") => 0;
     lfs_mkdir(&lfs, "tea/warmtea") => 0;
@@ -47,8 +47,8 @@ code = '''
 
 [[case]] # dot path test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "tea") => 0;
     lfs_mkdir(&lfs, "tea/hottea") => 0;
     lfs_mkdir(&lfs, "tea/warmtea") => 0;
@@ -73,8 +73,8 @@ code = '''
 
 [[case]] # dot dot path test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "tea") => 0;
     lfs_mkdir(&lfs, "tea/hottea") => 0;
     lfs_mkdir(&lfs, "tea/warmtea") => 0;
@@ -103,8 +103,8 @@ code = '''
 
 [[case]] # trailing dot path test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "tea") => 0;
     lfs_mkdir(&lfs, "tea/hottea") => 0;
     lfs_mkdir(&lfs, "tea/warmtea") => 0;
@@ -125,8 +125,8 @@ code = '''
 
 [[case]] # leading dot path test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, ".milk") => 0;
     lfs_stat(&lfs, ".milk", &info) => 0;
     strcmp(info.name, ".milk") => 0;
@@ -137,8 +137,8 @@ code = '''
 
 [[case]] # root dot dot path test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "tea") => 0;
     lfs_mkdir(&lfs, "tea/hottea") => 0;
     lfs_mkdir(&lfs, "tea/warmtea") => 0;
@@ -161,8 +161,8 @@ code = '''
 
 [[case]] # invalid path tests
 code = '''
-    lfs_formatcfg(&lfs, &cfg);
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg);
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "dirt", &info) => LFS_ERR_NOENT;
     lfs_stat(&lfs, "dirt/ground", &info) => LFS_ERR_NOENT;
     lfs_stat(&lfs, "dirt/ground/earth", &info) => LFS_ERR_NOENT;
@@ -182,8 +182,8 @@ code = '''
 
 [[case]] # root operations
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "/", &info) => 0;
     assert(strcmp(info.name, "/") == 0);
     assert(info.type == LFS_TYPE_DIR);
@@ -198,8 +198,8 @@ code = '''
 
 [[case]] # root representations
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "/", &info) => 0;
     assert(strcmp(info.name, "/") == 0);
     assert(info.type == LFS_TYPE_DIR);
@@ -223,8 +223,8 @@ code = '''
 
 [[case]] # superblock conflict test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "littlefs", &info) => LFS_ERR_NOENT;
     lfs_remove(&lfs, "littlefs") => LFS_ERR_NOENT;
 
@@ -239,8 +239,8 @@ code = '''
 
 [[case]] # max path test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "coffee") => 0;
     lfs_mkdir(&lfs, "coffee/hotcoffee") => 0;
     lfs_mkdir(&lfs, "coffee/warmcoffee") => 0;
@@ -263,8 +263,8 @@ code = '''
 
 [[case]] # really big path test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_mkdir(&lfs, "coffee") => 0;
     lfs_mkdir(&lfs, "coffee/hotcoffee") => 0;
     lfs_mkdir(&lfs, "coffee/warmcoffee") => 0;

tests/test_relocations.toml

@@ -4,9 +4,9 @@ define.ITERATIONS = 20
 define.COUNT = 10
 define.LFS_BLOCK_CYCLES = [8, 1]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
     // fill up filesystem so only ~16 blocks are left
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "padding", LFS_O_CREAT | LFS_O_WRONLY) => 0;
     memset(buffer, 0, 512);
     while (LFS_BLOCK_COUNT - lfs_fs_size(&lfs) > 16) {
@@ -17,7 +17,7 @@ code = '''
     lfs_mkdir(&lfs, "child") => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int j = 0; j < ITERATIONS; j++) {
         for (int i = 0; i < COUNT; i++) {
             sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
@@ -26,14 +26,14 @@ code = '''
         }
 
         lfs_dir_open(&lfs, &dir, "child") => 0;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         for (int i = 0; i < COUNT; i++) {
             sprintf(path, "test%03d_loooooooooooooooooong_name", i);
-            lfs_dir_read(&lfs, &dir, &info) => 1;
+            lfs_dir_read(&lfs, &dir, &info) => 0;
             strcmp(info.name, path) => 0;
         }
-        lfs_dir_read(&lfs, &dir, &info) => 0;
+        lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
         lfs_dir_close(&lfs, &dir) => 0;
 
         if (j == ITERATIONS-1) {
@@ -47,16 +47,16 @@ code = '''
     }
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_dir_open(&lfs, &dir, "child") => 0;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
-    lfs_dir_read(&lfs, &dir, &info) => 1;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => 0;
     for (int i = 0; i < COUNT; i++) {
         sprintf(path, "test%03d_loooooooooooooooooong_name", i);
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         strcmp(info.name, path) => 0;
     }
-    lfs_dir_read(&lfs, &dir, &info) => 0;
+    lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
     lfs_dir_close(&lfs, &dir) => 0;
     for (int i = 0; i < COUNT; i++) {
         sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
@@ -70,9 +70,9 @@ define.ITERATIONS = 20
 define.COUNT = 10
 define.LFS_BLOCK_CYCLES = [8, 1]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
     // fill up filesystem so only ~16 blocks are left
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "padding", LFS_O_CREAT | LFS_O_WRONLY) => 0;
     memset(buffer, 0, 512);
     while (LFS_BLOCK_COUNT - lfs_fs_size(&lfs) > 16) {
@@ -83,7 +83,7 @@ code = '''
     lfs_mkdir(&lfs, "child") => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int j = 0; j < ITERATIONS; j++) {
         for (int i = 0; i < COUNT; i++) {
             sprintf(path, "child/test%03d_loooooooooooooooooong_name", i);
@@ -92,11 +92,11 @@ code = '''
         }
 
         lfs_dir_open(&lfs, &dir, "child") => 0;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         for (int i = 0; i < COUNT; i++) {
             sprintf(path, "test%03d_loooooooooooooooooong_name", i);
-            lfs_dir_read(&lfs, &dir, &info) => 1;
+            lfs_dir_read(&lfs, &dir, &info) => 0;
             strcmp(info.name, path) => 0;
             info.size => 0;
 
@@ -105,14 +105,14 @@ code = '''
             lfs_file_write(&lfs, &file, "hi", 2) => 2;
             lfs_file_close(&lfs, &file) => 0;
         }
-        lfs_dir_read(&lfs, &dir, &info) => 0;
+        lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
 
         lfs_dir_rewind(&lfs, &dir) => 0;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         for (int i = 0; i < COUNT; i++) {
             sprintf(path, "test%03d_loooooooooooooooooong_name", i);
-            lfs_dir_read(&lfs, &dir, &info) => 1;
+            lfs_dir_read(&lfs, &dir, &info) => 0;
             strcmp(info.name, path) => 0;
             info.size => 2;
 
@@ -121,18 +121,18 @@ code = '''
             lfs_file_write(&lfs, &file, "hi", 2) => 2;
             lfs_file_close(&lfs, &file) => 0;
         }
-        lfs_dir_read(&lfs, &dir, &info) => 0;
+        lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
 
         lfs_dir_rewind(&lfs, &dir) => 0;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
-        lfs_dir_read(&lfs, &dir, &info) => 1;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
+        lfs_dir_read(&lfs, &dir, &info) => 0;
         for (int i = 0; i < COUNT; i++) {
             sprintf(path, "test%03d_loooooooooooooooooong_name", i);
-            lfs_dir_read(&lfs, &dir, &info) => 1;
+            lfs_dir_read(&lfs, &dir, &info) => 0;
             strcmp(info.name, path) => 0;
             info.size => 2;
         }
-        lfs_dir_read(&lfs, &dir, &info) => 0;
+        lfs_dir_read(&lfs, &dir, &info) => LFS_ERR_NOENT;
         lfs_dir_close(&lfs, &dir) => 0;
 
         for (int i = 0; i < COUNT; i++) {
@@ -155,10 +155,10 @@ define = [
     {FILES=3,  DEPTH=3, CYCLES=20, LFS_BLOCK_CYCLES=1},
 ]
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
 
     srand(1);
@@ -217,10 +217,10 @@ define = [
     {FILES=3,  DEPTH=3, CYCLES=20, LFS_BLOCK_CYCLES=1},
 ]
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
 
     srand(1);

tests/test_seek.toml

@@ -9,8 +9,8 @@ define = [
     {COUNT=4,   SKIP=2},
 ]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "kitty",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_APPEND) => 0;
     size = strlen("kittycatcat");
@@ -21,7 +21,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "kitty", LFS_O_RDONLY) => 0;
 
     lfs_soff_t pos = -1;
@@ -78,8 +78,8 @@ define = [
     {COUNT=4,   SKIP=2},
 ]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "kitty",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_APPEND) => 0;
     size = strlen("kittycatcat");
@@ -90,7 +90,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "kitty", LFS_O_RDWR) => 0;
 
     lfs_soff_t pos = -1;
@@ -133,8 +133,8 @@ code = '''
 define.COUNT = 132
 define.OFFSETS = '"{512, 1020, 513, 1021, 511, 1019, 1441}"'
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "kitty",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_APPEND) => 0;
     size = strlen("kittycatcat");
@@ -145,7 +145,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "kitty", LFS_O_RDWR) => 0;
 
     size = strlen("hedgehoghog");
@@ -193,8 +193,8 @@ define = [
     {COUNT=4,   SKIP=3},
 ]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "kitty",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_APPEND) => 0;
     size = strlen("kittycatcat");
@@ -204,7 +204,7 @@ code = '''
     }
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "kitty", LFS_O_RDWR) => 0;
 
     size = strlen("kittycatcat");
@@ -241,8 +241,8 @@ code = '''
 [[case]] # inline write and seek
 define.SIZE = [2, 4, 128, 132]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "tinykitty",
             LFS_O_RDWR | LFS_O_CREAT) => 0;
     int j = 0;
@@ -310,10 +310,10 @@ code = '''
 define.COUNT = [4, 64, 128]
 reentrant = true
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
     err = lfs_file_open(&lfs, &file, "kitty", LFS_O_RDONLY);
     assert(!err || err == LFS_ERR_NOENT);

tests/test_superblocks.toml

@@ -1,37 +1,37 @@
 [[case]] # simple formatting test
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
 '''
 
 [[case]] # mount/unmount
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_unmount(&lfs) => 0;
 '''
 
 [[case]] # reentrant format
 reentrant = true
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
     lfs_unmount(&lfs) => 0;
 '''
 
 [[case]] # invalid mount
 code = '''
-    lfs_mountcfg(&lfs, &cfg) => LFS_ERR_CORRUPT;
+    lfs_mount(&lfs, &cfg) => LFS_ERR_CORRUPT;
 '''
 
 [[case]] # expanding superblock
 define.LFS_BLOCK_CYCLES = [32, 33, 1]
 define.N = [10, 100, 1000]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
         lfs_file_open(&lfs, &file, "dummy",
                 LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
@@ -44,7 +44,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // one last check after power-cycle
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "dummy",
             LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
     lfs_file_close(&lfs, &file) => 0;
@@ -58,9 +58,9 @@ code = '''
 define.LFS_BLOCK_CYCLES = [32, 33, 1]
 define.N = [10, 100, 1000]
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
     for (int i = 0; i < N; i++) {
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
         // remove lingering dummy?
         err = lfs_stat(&lfs, "dummy", &info);
         assert(err == 0 || (err == LFS_ERR_NOENT && i == 0));
@@ -80,7 +80,7 @@ code = '''
     }
 
     // one last check after power-cycle
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "dummy", &info) => 0;
     assert(strcmp(info.name, "dummy") == 0);
     assert(info.type == LFS_TYPE_REG);
@@ -92,10 +92,10 @@ define.LFS_BLOCK_CYCLES = [2, 1]
 define.N = 24
 reentrant = true
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
 
     for (int i = 0; i < N; i++) {
@@ -119,7 +119,7 @@ code = '''
     lfs_unmount(&lfs) => 0;
 
     // one last check after power-cycle
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_stat(&lfs, "dummy", &info) => 0;
     assert(strcmp(info.name, "dummy") == 0);
     assert(info.type == LFS_TYPE_REG);

tests/test_truncate.toml

@@ -2,8 +2,8 @@
 define.MEDIUMSIZE = [32, 2048]
 define.LARGESIZE = 8192
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "baldynoop",
             LFS_O_WRONLY | LFS_O_CREAT) => 0;
 
@@ -17,7 +17,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
     
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "baldynoop", LFS_O_RDWR) => 0;
     lfs_file_size(&lfs, &file) => LARGESIZE;
 
@@ -27,7 +27,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "baldynoop", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => MEDIUMSIZE;
 
@@ -46,8 +46,8 @@ code = '''
 define.MEDIUMSIZE = [32, 2048]
 define.LARGESIZE = 8192
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "baldyread",
             LFS_O_WRONLY | LFS_O_CREAT) => 0;
 
@@ -61,7 +61,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "baldyread", LFS_O_RDWR) => 0;
     lfs_file_size(&lfs, &file) => LARGESIZE;
 
@@ -78,7 +78,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "baldyread", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => MEDIUMSIZE;
 
@@ -95,12 +95,12 @@ code = '''
 
 [[case]] # write, truncate, and read
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "sequence",
             LFS_O_RDWR | LFS_O_CREAT | LFS_O_TRUNC) => 0;
 
-    size = lfs_min(lfs.cfg.cache_size, sizeof(buffer)/2);
+    size = lfs_min(lfs.cfg->cache_size, sizeof(buffer)/2);
     lfs_size_t qsize = size / 4;
     uint8_t *wb = buffer;
     uint8_t *rb = buffer + size;
@@ -149,8 +149,8 @@ code = '''
 define.MEDIUMSIZE = [32, 2048]
 define.LARGESIZE = 8192
 code = '''
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "baldywrite",
             LFS_O_WRONLY | LFS_O_CREAT) => 0;
 
@@ -164,7 +164,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "baldywrite", LFS_O_RDWR) => 0;
     lfs_file_size(&lfs, &file) => LARGESIZE;
 
@@ -181,7 +181,7 @@ code = '''
     lfs_file_close(&lfs, &file) => 0;
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
     lfs_file_open(&lfs, &file, "baldywrite", LFS_O_RDONLY) => 0;
     lfs_file_size(&lfs, &file) => MEDIUMSIZE;
 
@@ -202,10 +202,10 @@ define.MEDIUMSIZE = [32, 1024]
 define.LARGESIZE = 2048
 reentrant = true
 code = '''
-    err = lfs_mountcfg(&lfs, &cfg);
+    err = lfs_mount(&lfs, &cfg);
     if (err) {
-        lfs_formatcfg(&lfs, &cfg) => 0;
-        lfs_mountcfg(&lfs, &cfg) => 0;
+        lfs_format(&lfs, &cfg) => 0;
+        lfs_mount(&lfs, &cfg) => 0;
     }
     err = lfs_file_open(&lfs, &file, "baldy", LFS_O_RDONLY);
     assert(!err || err == LFS_ERR_NOENT);
@@ -312,8 +312,8 @@ code = '''
     const lfs_off_t *hotsizes   = configs[CONFIG].hotsizes;
     const lfs_off_t *coldsizes  = configs[CONFIG].coldsizes;
 
-    lfs_formatcfg(&lfs, &cfg) => 0;
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_format(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     for (unsigned i = 0; i < COUNT; i++) {
         sprintf(path, "hairyhead%d", i);
@@ -340,7 +340,7 @@ code = '''
 
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     for (unsigned i = 0; i < COUNT; i++) {
         sprintf(path, "hairyhead%d", i);
@@ -367,7 +367,7 @@ code = '''
 
     lfs_unmount(&lfs) => 0;
 
-    lfs_mountcfg(&lfs, &cfg) => 0;
+    lfs_mount(&lfs, &cfg) => 0;
 
     for (unsigned i = 0; i < COUNT; i++) {
         sprintf(path, "hairyhead%d", i);