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spiffs: Add vfs (f)truncate api support

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Unit test cases added to verify truncate.

Closes https://github.com/espressif/esp-idf/issues/2234
This commit is contained in:
Vamshi Gajjela
2022-03-18 15:19:18 +05:30
parent 6d13c8b3a6
commit 0e5c9702c6
3 changed files with 163 additions and 1 deletions
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components/spiffs/esp_spiffs.c
+42
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@@ -68,6 +68,8 @@ static long vfs_spiffs_telldir(void* ctx, DIR* pdir);
static void vfs_spiffs_seekdir(void* ctx, DIR* pdir, long offset);
static int vfs_spiffs_mkdir(void* ctx, const char* name, mode_t mode);
static int vfs_spiffs_rmdir(void* ctx, const char* name);
static int vfs_spiffs_truncate(void* ctx, const char *path, off_t length);
static int vfs_spiffs_ftruncate(void* ctx, int fd, off_t length);
#ifdef CONFIG_SPIFFS_USE_MTIME
static int vfs_spiffs_utime(void *ctx, const char *path, const struct utimbuf *times);
#endif // CONFIG_SPIFFS_USE_MTIME
@@ -352,6 +354,8 @@ esp_err_t esp_vfs_spiffs_register(const esp_vfs_spiffs_conf_t * conf)
.telldir_p = &vfs_spiffs_telldir,
.mkdir_p = &vfs_spiffs_mkdir,
.rmdir_p = &vfs_spiffs_rmdir,
.truncate_p = &vfs_spiffs_truncate,
.ftruncate_p = &vfs_spiffs_ftruncate,
#ifdef CONFIG_SPIFFS_USE_MTIME
.utime_p = &vfs_spiffs_utime,
#else
@@ -725,6 +729,44 @@ static int vfs_spiffs_rmdir(void* ctx, const char* name)
return -1;
}
static int vfs_spiffs_truncate(void* ctx, const char *path, off_t length)
{
assert(path);
esp_spiffs_t * efs = (esp_spiffs_t *)ctx;
int fd = SPIFFS_open(efs->fs, path, SPIFFS_WRONLY, 0);
if (fd < 0) {
goto err;
}
int res = SPIFFS_ftruncate(efs->fs, fd, length);
if (res < 0) {
(void)SPIFFS_close(efs->fs, fd);
goto err;
}
res = SPIFFS_close(efs->fs, fd);
if (res < 0) {
goto err;
}
return res;
err:
errno = spiffs_res_to_errno(SPIFFS_errno(efs->fs));
SPIFFS_clearerr(efs->fs);
return -1;
}
static int vfs_spiffs_ftruncate(void* ctx, int fd, off_t length)
{
esp_spiffs_t * efs = (esp_spiffs_t *)ctx;
int res = SPIFFS_ftruncate(efs->fs, fd, length);
if (res < 0) {
errno = spiffs_res_to_errno(SPIFFS_errno(efs->fs));
SPIFFS_clearerr(efs->fs);
return -1;
}
return res;
}
static int vfs_spiffs_link(void* ctx, const char* n1, const char* n2)
{
errno = ENOTSUP;