mirror of
https://github.com/eledio-devices/thirdparty-littlefs.git
synced 2025-10-31 00:32:38 +01:00
Squash of thread-safe PR cleanup
- expand functions - add comment - rename functions - fix locking issue in format and mount - use global include - fix ac6 linker issue - use the global config file - address review comments - minor cleanup - minor cleanup - review comments
This commit is contained in:
Bill Gesner
committed by
Christopher Haster
Christopher Haster
parent
10ac6b9cf0
commit
d0f055d321
209
lfs.h
209
lfs.h
@@ -9,14 +9,13 @@
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#include <stdint.h>
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#include <stdbool.h>
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#include "lfs_util.h"
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#include <lfs_util.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/// Version info ///
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// Software library version
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@@ -54,7 +53,7 @@ typedef uint32_t lfs_block_t;
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// Maximum size of a file in bytes, may be redefined to limit to support other
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// drivers. Limited on disk to <= 4294967296. However, above 2147483647 the
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// functions _lfs_file_seek, _lfs_file_size, and _lfs_file_tell will return
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// functions lfs_file_seek, lfs_file_size, and lfs_file_tell will return
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// incorrect values due to using signed integers. Stored in superblock and
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// must be respected by other littlefs drivers.
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#ifndef LFS_FILE_MAX
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@@ -85,9 +84,6 @@ enum lfs_error {
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LFS_ERR_NOMEM = -12, // No more memory available
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LFS_ERR_NOATTR = -61, // No data/attr available
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LFS_ERR_NAMETOOLONG = -36, // File name too long
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#if LFS_THREAD_SAFE
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LFS_ERR_LOCK = -23, // Failed to aquire lock
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#endif
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};
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// File types
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@@ -178,7 +174,7 @@ struct lfs_config {
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// are propogated to the user.
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int (*sync)(const struct lfs_config *c);
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#if LFS_THREAD_SAFE
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#if LFS_THREADSAFE
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// Lock the underlying block device. Negative error codes
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// are propogated to the user.
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int (*lock)(const struct lfs_config *c);
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@@ -186,7 +182,7 @@ struct lfs_config {
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// Unlock the underlying block device. Negative error codes
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// are propogated to the user.
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int (*unlock)(const struct lfs_config *c);
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#endif
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#endif
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// Minimum size of a block read. All read operations will be a
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// multiple of this value.
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@@ -420,7 +416,7 @@ typedef struct lfs {
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// be zeroed for defaults and backwards compatibility.
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//
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// Returns a negative error code on failure.
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int _lfs_format(lfs_t *lfs, const struct lfs_config *config);
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int lfs_format(lfs_t *lfs, const struct lfs_config *config);
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// Mounts a littlefs
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//
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@@ -430,13 +426,13 @@ int _lfs_format(lfs_t *lfs, const struct lfs_config *config);
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// be zeroed for defaults and backwards compatibility.
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//
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// Returns a negative error code on failure.
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int _lfs_mount(lfs_t *lfs, const struct lfs_config *config);
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int lfs_mount(lfs_t *lfs, const struct lfs_config *config);
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// Unmounts a littlefs
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//
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// Does nothing besides releasing any allocated resources.
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// Returns a negative error code on failure.
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int _lfs_unmount(lfs_t *lfs);
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int lfs_unmount(lfs_t *lfs);
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/// General operations ///
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@@ -444,7 +440,7 @@ int _lfs_unmount(lfs_t *lfs);
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//
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// If removing a directory, the directory must be empty.
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// Returns a negative error code on failure.
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int _lfs_remove(lfs_t *lfs, const char *path);
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int lfs_remove(lfs_t *lfs, const char *path);
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// Rename or move a file or directory
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//
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@@ -452,13 +448,13 @@ int _lfs_remove(lfs_t *lfs, const char *path);
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// If the destination is a directory, the directory must be empty.
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//
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// Returns a negative error code on failure.
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int _lfs_rename(lfs_t *lfs, const char *oldpath, const char *newpath);
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int lfs_rename(lfs_t *lfs, const char *oldpath, const char *newpath);
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// Find info about a file or directory
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//
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// Fills out the info structure, based on the specified file or directory.
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// Returns a negative error code on failure.
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int _lfs_stat(lfs_t *lfs, const char *path, struct lfs_info *info);
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int lfs_stat(lfs_t *lfs, const char *path, struct lfs_info *info);
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// Get a custom attribute
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//
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@@ -472,7 +468,7 @@ int _lfs_stat(lfs_t *lfs, const char *path, struct lfs_info *info);
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// Note, the returned size is the size of the attribute on disk, irrespective
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// of the size of the buffer. This can be used to dynamically allocate a buffer
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// or check for existance.
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lfs_ssize_t _lfs_getattr(lfs_t *lfs, const char *path,
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lfs_ssize_t lfs_getattr(lfs_t *lfs, const char *path,
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uint8_t type, void *buffer, lfs_size_t size);
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// Set custom attributes
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@@ -482,7 +478,7 @@ lfs_ssize_t _lfs_getattr(lfs_t *lfs, const char *path,
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// implicitly created.
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//
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// Returns a negative error code on failure.
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int _lfs_setattr(lfs_t *lfs, const char *path,
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int lfs_setattr(lfs_t *lfs, const char *path,
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uint8_t type, const void *buffer, lfs_size_t size);
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// Removes a custom attribute
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@@ -490,7 +486,7 @@ int _lfs_setattr(lfs_t *lfs, const char *path,
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// If an attribute is not found, nothing happens.
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//
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// Returns a negative error code on failure.
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int _lfs_removeattr(lfs_t *lfs, const char *path, uint8_t type);
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int lfs_removeattr(lfs_t *lfs, const char *path, uint8_t type);
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/// File operations ///
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@@ -501,7 +497,7 @@ int _lfs_removeattr(lfs_t *lfs, const char *path, uint8_t type);
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// are values from the enum lfs_open_flags that are bitwise-ored together.
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//
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// Returns a negative error code on failure.
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int _lfs_file_open(lfs_t *lfs, lfs_file_t *file,
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int lfs_file_open(lfs_t *lfs, lfs_file_t *file,
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const char *path, int flags);
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// Open a file with extra configuration
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@@ -514,7 +510,7 @@ int _lfs_file_open(lfs_t *lfs, lfs_file_t *file,
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// config struct must be zeroed for defaults and backwards compatibility.
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//
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// Returns a negative error code on failure.
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int _lfs_file_opencfg(lfs_t *lfs, lfs_file_t *file,
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int lfs_file_opencfg(lfs_t *lfs, lfs_file_t *file,
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const char *path, int flags,
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const struct lfs_file_config *config);
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@@ -524,19 +520,19 @@ int _lfs_file_opencfg(lfs_t *lfs, lfs_file_t *file,
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// sync had been called and releases any allocated resources.
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//
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// Returns a negative error code on failure.
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int _lfs_file_close(lfs_t *lfs, lfs_file_t *file);
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int lfs_file_close(lfs_t *lfs, lfs_file_t *file);
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// Synchronize a file on storage
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//
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// Any pending writes are written out to storage.
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// Returns a negative error code on failure.
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int _lfs_file_sync(lfs_t *lfs, lfs_file_t *file);
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int lfs_file_sync(lfs_t *lfs, lfs_file_t *file);
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// Read data from file
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//
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// Takes a buffer and size indicating where to store the read data.
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// Returns the number of bytes read, or a negative error code on failure.
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lfs_ssize_t _lfs_file_read(lfs_t *lfs, lfs_file_t *file,
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lfs_ssize_t lfs_file_read(lfs_t *lfs, lfs_file_t *file,
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void *buffer, lfs_size_t size);
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// Write data to file
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@@ -545,38 +541,38 @@ lfs_ssize_t _lfs_file_read(lfs_t *lfs, lfs_file_t *file,
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// actually be updated on the storage until either sync or close is called.
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//
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// Returns the number of bytes written, or a negative error code on failure.
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lfs_ssize_t _lfs_file_write(lfs_t *lfs, lfs_file_t *file,
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lfs_ssize_t lfs_file_write(lfs_t *lfs, lfs_file_t *file,
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const void *buffer, lfs_size_t size);
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// Change the position of the file
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//
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// The change in position is determined by the offset and whence flag.
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// Returns the new position of the file, or a negative error code on failure.
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lfs_soff_t _lfs_file_seek(lfs_t *lfs, lfs_file_t *file,
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lfs_soff_t lfs_file_seek(lfs_t *lfs, lfs_file_t *file,
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lfs_soff_t off, int whence);
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// Truncates the size of the file to the specified size
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//
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// Returns a negative error code on failure.
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int _lfs_file_truncate(lfs_t *lfs, lfs_file_t *file, lfs_off_t size);
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int lfs_file_truncate(lfs_t *lfs, lfs_file_t *file, lfs_off_t size);
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// Return the position of the file
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//
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// Equivalent to _lfs_file_seek(lfs, file, 0, LFS_SEEK_CUR)
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// Equivalent to lfs_file_seek(lfs, file, 0, LFS_SEEK_CUR)
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// Returns the position of the file, or a negative error code on failure.
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lfs_soff_t _lfs_file_tell(lfs_t *lfs, lfs_file_t *file);
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lfs_soff_t lfs_file_tell(lfs_t *lfs, lfs_file_t *file);
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// Change the position of the file to the beginning of the file
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//
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// Equivalent to _lfs_file_seek(lfs, file, 0, LFS_SEEK_SET)
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// Equivalent to lfs_file_seek(lfs, file, 0, LFS_SEEK_SET)
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// Returns a negative error code on failure.
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int _lfs_file_rewind(lfs_t *lfs, lfs_file_t *file);
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int lfs_file_rewind(lfs_t *lfs, lfs_file_t *file);
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// Return the size of the file
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//
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// Similar to _lfs_file_seek(lfs, file, 0, LFS_SEEK_END)
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// Similar to lfs_file_seek(lfs, file, 0, LFS_SEEK_END)
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// Returns the size of the file, or a negative error code on failure.
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lfs_soff_t _lfs_file_size(lfs_t *lfs, lfs_file_t *file);
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lfs_soff_t lfs_file_size(lfs_t *lfs, lfs_file_t *file);
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/// Directory operations ///
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@@ -584,26 +580,26 @@ lfs_soff_t _lfs_file_size(lfs_t *lfs, lfs_file_t *file);
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// Create a directory
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//
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// Returns a negative error code on failure.
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int _lfs_mkdir(lfs_t *lfs, const char *path);
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int lfs_mkdir(lfs_t *lfs, const char *path);
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// Open a directory
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//
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// Once open a directory can be used with read to iterate over files.
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// Returns a negative error code on failure.
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int _lfs_dir_open(lfs_t *lfs, lfs_dir_t *dir, const char *path);
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int lfs_dir_open(lfs_t *lfs, lfs_dir_t *dir, const char *path);
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// Close a directory
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//
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// Releases any allocated resources.
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// Returns a negative error code on failure.
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int _lfs_dir_close(lfs_t *lfs, lfs_dir_t *dir);
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int lfs_dir_close(lfs_t *lfs, lfs_dir_t *dir);
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// Read an entry in the directory
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//
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// Fills out the info structure, based on the specified file or directory.
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// Returns a positive value on success, 0 at the end of directory,
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// or a negative error code on failure.
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int _lfs_dir_read(lfs_t *lfs, lfs_dir_t *dir, struct lfs_info *info);
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int lfs_dir_read(lfs_t *lfs, lfs_dir_t *dir, struct lfs_info *info);
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// Change the position of the directory
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//
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@@ -611,7 +607,7 @@ int _lfs_dir_read(lfs_t *lfs, lfs_dir_t *dir, struct lfs_info *info);
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// an absolute offset in the directory seek.
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//
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// Returns a negative error code on failure.
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int _lfs_dir_seek(lfs_t *lfs, lfs_dir_t *dir, lfs_off_t off);
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int lfs_dir_seek(lfs_t *lfs, lfs_dir_t *dir, lfs_off_t off);
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// Return the position of the directory
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//
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@@ -619,12 +615,12 @@ int _lfs_dir_seek(lfs_t *lfs, lfs_dir_t *dir, lfs_off_t off);
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// sense, but does indicate the current position in the directory iteration.
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//
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// Returns the position of the directory, or a negative error code on failure.
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lfs_soff_t _lfs_dir_tell(lfs_t *lfs, lfs_dir_t *dir);
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lfs_soff_t lfs_dir_tell(lfs_t *lfs, lfs_dir_t *dir);
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// Change the position of the directory to the beginning of the directory
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//
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// Returns a negative error code on failure.
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int _lfs_dir_rewind(lfs_t *lfs, lfs_dir_t *dir);
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int lfs_dir_rewind(lfs_t *lfs, lfs_dir_t *dir);
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/// Filesystem-level filesystem operations
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@@ -635,7 +631,7 @@ int _lfs_dir_rewind(lfs_t *lfs, lfs_dir_t *dir);
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// size may be larger than the filesystem actually is.
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//
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// Returns the number of allocated blocks, or a negative error code on failure.
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lfs_ssize_t _lfs_fs_size(lfs_t *lfs);
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lfs_ssize_t lfs_fs_size(lfs_t *lfs);
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// Traverse through all blocks in use by the filesystem
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//
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@@ -644,12 +640,12 @@ lfs_ssize_t _lfs_fs_size(lfs_t *lfs);
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// blocks are in use or how much of the storage is available.
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//
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// Returns a negative error code on failure.
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int _lfs_fs_traverse(lfs_t *lfs, int (*cb)(void*, lfs_block_t), void *data);
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int lfs_fs_traverse(lfs_t *lfs, int (*cb)(void*, lfs_block_t), void *data);
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#ifdef LFS_MIGRATE
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// Attempts to migrate a previous version of littlefs
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//
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// Behaves similarly to the _lfs_format function. Attempts to mount
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// Behaves similarly to the lfs_format function. Attempts to mount
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// the previous version of littlefs and update the filesystem so it can be
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// mounted with the current version of littlefs.
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//
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@@ -658,108 +654,39 @@ int _lfs_fs_traverse(lfs_t *lfs, int (*cb)(void*, lfs_block_t), void *data);
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// be zeroed for defaults and backwards compatibility.
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//
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// Returns a negative error code on failure.
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int _lfs_migrate(lfs_t *lfs, const struct lfs_config *cfg);
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#endif
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#if LFS_THREAD_SAFE
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int _ts_lfs_format(lfs_t *lfs, const struct lfs_config *config);
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int _ts_lfs_mount(lfs_t *lfs, const struct lfs_config *config);
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int _ts_lfs_unmount(lfs_t *lfs);
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int _ts_lfs_remove(lfs_t *lfs, const char *path);
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int _ts_lfs_rename(lfs_t *lfs, const char *oldpath, const char *newpath);
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int _ts_lfs_stat(lfs_t *lfs, const char *path, struct lfs_info *info);
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lfs_ssize_t _ts_lfs_getattr(lfs_t *lfs, const char *path, uint8_t type, void *buffer, lfs_size_t size);
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int _ts_lfs_setattr(lfs_t *lfs, const char *path, uint8_t type, const void *buffer, lfs_size_t size);
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int _ts_lfs_removeattr(lfs_t *lfs, const char *path, uint8_t type);
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int _ts_lfs_file_open(lfs_t *lfs, lfs_file_t *file, const char *path, int flags);
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int _ts_lfs_file_opencfg(lfs_t *lfs, lfs_file_t *file, const char *path, int flags, const struct lfs_file_config *config);
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int _ts_lfs_file_close(lfs_t *lfs, lfs_file_t *file);
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int _ts_lfs_file_sync(lfs_t *lfs, lfs_file_t *file);
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lfs_ssize_t _ts_lfs_file_read(lfs_t *lfs, lfs_file_t *file, void *buffer, lfs_size_t size);
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lfs_ssize_t _ts_lfs_file_write(lfs_t *lfs, lfs_file_t *file, const void *buffer, lfs_size_t size);
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lfs_soff_t _ts_lfs_file_seek(lfs_t *lfs, lfs_file_t *file, lfs_soff_t off, int whence);
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int _ts_lfs_file_truncate(lfs_t *lfs, lfs_file_t *file, lfs_off_t size);
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lfs_soff_t _ts_lfs_file_tell(lfs_t *lfs, lfs_file_t *file);
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int _ts_lfs_file_rewind(lfs_t *lfs, lfs_file_t *file);
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lfs_soff_t _ts_lfs_file_size(lfs_t *lfs, lfs_file_t *file);
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int _ts_lfs_mkdir(lfs_t *lfs, const char *path);
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int _ts_lfs_dir_open(lfs_t *lfs, lfs_dir_t *dir, const char *path);
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int _ts_lfs_dir_close(lfs_t *lfs, lfs_dir_t *dir);
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int _ts_lfs_dir_read(lfs_t *lfs, lfs_dir_t *dir, struct lfs_info *info);
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int _ts_lfs_dir_seek(lfs_t *lfs, lfs_dir_t *dir, lfs_off_t off);
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lfs_soff_t _ts_lfs_dir_tell(lfs_t *lfs, lfs_dir_t *dir);
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int _ts_lfs_dir_rewind(lfs_t *lfs, lfs_dir_t *dir);
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lfs_ssize_t _ts_lfs_fs_size(lfs_t *lfs);
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int _ts_lfs_fs_traverse(lfs_t *lfs, int (*cb)(void*, lfs_block_t), void *data);
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int _ts_lfs_migrate(lfs_t *lfs, const struct lfs_config *cfg);
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#define lfs_format _ts_lfs_format
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#define lfs_mount _ts_lfs_mount
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#define lfs_unmount _ts_lfs_unmount
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#define lfs_remove _ts_lfs_remove
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#define lfs_rename _ts_lfs_rename
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#define lfs_stat _ts_lfs_stat
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#define lfs_getattr _ts_lfs_getattr
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||||
#define lfs_setattr _ts_lfs_setattr
|
||||
#define lfs_removeattr _ts_lfs_removeattr
|
||||
#define lfs_file_open _ts_lfs_file_open
|
||||
#define lfs_file_opencfg _ts_lfs_file_opencfg
|
||||
#define lfs_file_close _ts_lfs_file_close
|
||||
#define lfs_file_sync _ts_lfs_file_sync
|
||||
#define lfs_file_read _ts_lfs_file_read
|
||||
#define lfs_file_write _ts_lfs_file_write
|
||||
#define lfs_file_seek _ts_lfs_file_seek
|
||||
#define lfs_file_truncate _ts_lfs_file_truncate
|
||||
#define lfs_file_tell _ts_lfs_file_tell
|
||||
#define lfs_file_rewind _ts_lfs_file_rewind
|
||||
#define lfs_file_size _ts_lfs_file_size
|
||||
#define lfs_mkdir _ts_lfs_mkdir
|
||||
#define lfs_dir_open _ts_lfs_dir_open
|
||||
#define lfs_dir_close _ts_lfs_dir_close
|
||||
#define lfs_dir_read _ts_lfs_dir_read
|
||||
#define lfs_dir_seek _ts_lfs_dir_seek
|
||||
#define lfs_dir_tell _ts_lfs_dir_tell
|
||||
#define lfs_dir_rewind _ts_lfs_dir_rewind
|
||||
#define lfs_fs_size _ts_lfs_fs_size
|
||||
#define lfs_fs_traverse _ts_lfs_fs_traverse
|
||||
#define lfs_migrate _ts_lfs_migrate
|
||||
|
||||
#else
|
||||
|
||||
#define lfs_format _lfs_format
|
||||
#define lfs_mount _lfs_mount
|
||||
#define lfs_unmount _lfs_unmount
|
||||
#define lfs_remove _lfs_remove
|
||||
#define lfs_rename _lfs_rename
|
||||
#define lfs_stat _lfs_stat
|
||||
#define lfs_getattr _lfs_getattr
|
||||
#define lfs_setattr _lfs_setattr
|
||||
#define lfs_removeattr _lfs_removeattr
|
||||
#define lfs_file_open _lfs_file_open
|
||||
#define lfs_file_opencfg _lfs_file_opencfg
|
||||
#define lfs_file_close _lfs_file_close
|
||||
#define lfs_file_sync _lfs_file_sync
|
||||
#define lfs_file_read _lfs_file_read
|
||||
#define lfs_file_write _lfs_file_write
|
||||
#define lfs_file_seek _lfs_file_seek
|
||||
#define lfs_file_truncate _lfs_file_truncate
|
||||
#define lfs_file_tell _lfs_file_tell
|
||||
#define lfs_file_rewind _lfs_file_rewind
|
||||
#define lfs_file_size _lfs_file_size
|
||||
#define lfs_mkdir _lfs_mkdir
|
||||
#define lfs_dir_open _lfs_dir_open
|
||||
#define lfs_dir_close _lfs_dir_close
|
||||
#define lfs_dir_read _lfs_dir_read
|
||||
#define lfs_dir_seek _lfs_dir_seek
|
||||
#define lfs_dir_tell _lfs_dir_tell
|
||||
#define lfs_dir_rewind _lfs_dir_rewind
|
||||
#define lfs_fs_size _lfs_fs_size
|
||||
#define lfs_fs_traverse _lfs_fs_traverse
|
||||
#define lfs_migrate _lfs_migrate
|
||||
|
||||
int lfs_migrate(lfs_t *lfs, const struct lfs_config *cfg);
|
||||
#endif
|
||||
|
||||
int lfs_format_raw(lfs_t *lfs, const struct lfs_config *config);
|
||||
int lfs_mount_raw(lfs_t *lfs, const struct lfs_config *config);
|
||||
int lfs_unmount_raw(lfs_t *lfs);
|
||||
int lfs_remove_raw(lfs_t *lfs, const char *path);
|
||||
int lfs_rename_raw(lfs_t *lfs, const char *oldpath, const char *newpath);
|
||||
int lfs_stat_raw(lfs_t *lfs, const char *path, struct lfs_info *info);
|
||||
lfs_ssize_t lfs_getattr_raw(lfs_t *lfs, const char *path, uint8_t type, void *buffer, lfs_size_t size);
|
||||
int lfs_setattr_raw(lfs_t *lfs, const char *path, uint8_t type, const void *buffer, lfs_size_t size);
|
||||
int lfs_removeattr_raw(lfs_t *lfs, const char *path, uint8_t type);
|
||||
int lfs_file_open_raw(lfs_t *lfs, lfs_file_t *file, const char *path, int flags);
|
||||
int lfs_file_opencfg_raw(lfs_t *lfs, lfs_file_t *file, const char *path, int flags, const struct lfs_file_config *config);
|
||||
int lfs_file_close_raw(lfs_t *lfs, lfs_file_t *file);
|
||||
int lfs_file_sync_raw(lfs_t *lfs, lfs_file_t *file);
|
||||
lfs_ssize_t lfs_file_read_raw(lfs_t *lfs, lfs_file_t *file, void *buffer, lfs_size_t size);
|
||||
lfs_ssize_t lfs_file_write_raw(lfs_t *lfs, lfs_file_t *file, const void *buffer, lfs_size_t size);
|
||||
lfs_soff_t lfs_file_seek_raw(lfs_t *lfs, lfs_file_t *file, lfs_soff_t off, int whence);
|
||||
int lfs_file_truncate_raw(lfs_t *lfs, lfs_file_t *file, lfs_off_t size);
|
||||
lfs_soff_t lfs_file_tell_raw(lfs_t *lfs, lfs_file_t *file);
|
||||
int lfs_file_rewind_raw(lfs_t *lfs, lfs_file_t *file);
|
||||
lfs_soff_t lfs_file_size_raw(lfs_t *lfs, lfs_file_t *file);
|
||||
int lfs_mkdir_raw(lfs_t *lfs, const char *path);
|
||||
int lfs_dir_open_raw(lfs_t *lfs, lfs_dir_t *dir, const char *path);
|
||||
int lfs_dir_close_raw(lfs_t *lfs, lfs_dir_t *dir);
|
||||
int lfs_dir_read_raw(lfs_t *lfs, lfs_dir_t *dir, struct lfs_info *info);
|
||||
int lfs_dir_seek_raw(lfs_t *lfs, lfs_dir_t *dir, lfs_off_t off);
|
||||
lfs_soff_t lfs_dir_tell_raw(lfs_t *lfs, lfs_dir_t *dir);
|
||||
int lfs_dir_rewind_raw(lfs_t *lfs, lfs_dir_t *dir);
|
||||
lfs_ssize_t lfs_fs_size_raw(lfs_t *lfs);
|
||||
int lfs_fs_traverse_raw(lfs_t *lfs, int (*cb)(void*, lfs_block_t), void *data);
|
||||
int lfs_migrate_raw(lfs_t *lfs, const struct lfs_config *cfg);
|
||||
|
||||
#ifdef __cplusplus
|
||||
} /* extern "C" */
|
||||
|
||||
Reference in New Issue
Block a user