mirror of
https://github.com/eledio-devices/thirdparty-littlefs.git
synced 2025-11-01 00:38:29 +01:00
1eeb2a6811
Directories still consume two full erase blocks, but now only program the exact on-disk region to store the directory contents. This results in a decent improvement in the amount of data written and read to the device when doing directory operations. Calculating the checksum of dynamically sized data is surprisingly tricky, since the size of the data could also contain errors. For the littlefs, we can assume the data size must fit in an erase block. If the data size is invalid, we can just treat the block as corrupted.
106 lines
2.0 KiB
Plaintext
106 lines
2.0 KiB
Plaintext
/// AUTOGENERATED TEST ///
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#include "lfs.h"
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#include "emubd/lfs_emubd.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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// test stuff
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void test_log(const char *s, uintmax_t v) {{
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printf("%s: %jd\n", s, v);
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}}
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void test_assert(const char *file, unsigned line,
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const char *s, uintmax_t v, uintmax_t e) {{
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static const char *last[6] = {{0, 0}};
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if (v != e || !(last[0] == s || last[1] == s ||
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last[2] == s || last[3] == s ||
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last[4] == s || last[5] == s)) {{
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test_log(s, v);
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last[0] = last[1];
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last[1] = last[2];
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last[2] = last[3];
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last[3] = last[4];
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last[4] = last[5];
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last[5] = s;
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}}
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if (v != e) {{
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printf("\033[31m%s:%u: assert %s failed, expected %jd\033[0m\n",
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file, line, s, e);
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exit(-2);
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}}
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}}
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#define test_assert(s, v, e) test_assert(__FILE__, __LINE__, s, v, e)
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// utility functions for traversals
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int test_count(void *p, lfs_block_t b) {{
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unsigned *u = (unsigned*)p;
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*u += 1;
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return 0;
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}}
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// lfs declarations
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lfs_t lfs;
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lfs_emubd_t bd;
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lfs_file_t file[4];
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lfs_dir_t dir[4];
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struct lfs_info info;
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uint8_t buffer[1024];
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uint8_t wbuffer[1024];
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uint8_t rbuffer[1024];
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lfs_size_t size;
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lfs_size_t wsize;
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lfs_size_t rsize;
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uintmax_t res;
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#ifndef LFS_READ_SIZE
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#define LFS_READ_SIZE 16
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#endif
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#ifndef LFS_PROG_SIZE
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#define LFS_PROG_SIZE 16
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#endif
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#ifndef LFS_BLOCK_SIZE
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#define LFS_BLOCK_SIZE 512
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#endif
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#ifndef LFS_BLOCK_COUNT
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#define LFS_BLOCK_COUNT 1024
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#endif
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#ifndef LFS_LOOKAHEAD
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#define LFS_LOOKAHEAD 128
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#endif
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const struct lfs_config cfg = {{
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.context = &bd,
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.read = &lfs_emubd_read,
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.prog = &lfs_emubd_prog,
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.erase = &lfs_emubd_erase,
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.sync = &lfs_emubd_sync,
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.read_size = LFS_READ_SIZE,
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.prog_size = LFS_PROG_SIZE,
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.block_size = LFS_BLOCK_SIZE,
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.block_count = LFS_BLOCK_COUNT,
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.lookahead = LFS_LOOKAHEAD,
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}};
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// Entry point
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int main() {{
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lfs_emubd_create(&cfg, "blocks");
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{tests}
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lfs_emubd_destroy(&cfg);
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}}
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