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vfs,fat: add fsync to VFS interface, implement it for fatfs

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This commit is contained in:
Ivan Grokhotkov 2017-10-17 14:00:01 +08:00
parent 90bf40587e
commit 502c3d0243
3 changed files with 36 additions and 0 deletions
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18
components/fatfs/src/vfs_fat.c
View File

@ -52,6 +52,7 @@ static int vfs_fat_open(void* ctx, const char * path, int flags, int mode);
static int vfs_fat_close(void* ctx, int fd);
static int vfs_fat_fstat(void* ctx, int fd, struct stat * st);
static int vfs_fat_stat(void* ctx, const char * path, struct stat * st);
static int vfs_fat_fsync(void* ctx, int fd);
static int vfs_fat_link(void* ctx, const char* n1, const char* n2);
static int vfs_fat_unlink(void* ctx, const char *path);
static int vfs_fat_rename(void* ctx, const char *src, const char *dst);
@ -109,6 +110,7 @@ esp_err_t esp_vfs_fat_register(const char* base_path, const char* fat_drive, siz
.close_p = &vfs_fat_close,
.fstat_p = &vfs_fat_fstat,
.stat_p = &vfs_fat_stat,
.fsync_p = &vfs_fat_fsync,
.link_p = &vfs_fat_link,
.unlink_p = &vfs_fat_unlink,
.rename_p = &vfs_fat_rename,
@ -322,6 +324,22 @@ static ssize_t vfs_fat_read(void* ctx, int fd, void * dst, size_t size)
return read;
}
static int vfs_fat_fsync(void* ctx, int fd)
{
vfs_fat_ctx_t* fat_ctx = (vfs_fat_ctx_t*) ctx;
_lock_acquire(&fat_ctx->lock);
FIL* file = &fat_ctx->files[fd];
FRESULT res = f_sync(file);
int rc = 0;
if (res != FR_OK) {
ESP_LOGD(TAG, "%s: fresult=%d", __func__, res);
errno = fresult_to_errno(res);
rc = -1;
}
_lock_release(&fat_ctx->lock);
return rc;
}
static int vfs_fat_close(void* ctx, int fd)
{
vfs_fat_ctx_t* fat_ctx = (vfs_fat_ctx_t*) ctx;

4
components/vfs/include/esp_vfs.h
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@ -162,6 +162,10 @@ typedef struct
int (*ioctl_p)(void* ctx, int fd, int cmd, va_list args);
int (*ioctl)(int fd, int cmd, va_list args);
};
union {
int (*fsync_p)(void* ctx, int fd);
int (*fsync)(int fd);
};
} esp_vfs_t;

14
components/vfs/vfs.c
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@ -534,3 +534,17 @@ int ioctl(int fd, int cmd, ...)
va_end(args);
return ret;
}
int fsync(int fd)
{
const vfs_entry_t* vfs = get_vfs_for_fd(fd);
struct _reent* r = __getreent();
if (vfs == NULL) {
__errno_r(r) = EBADF;
return -1;
}
int local_fd = translate_fd(vfs, fd);
int ret;
CHECK_AND_CALL(ret, r, vfs, fsync, local_fd);
return ret;
}