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fatfs: Add ftruncate api support for VFS and FAT-VFS

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Unit test cases added to verify ftruncate within fatfs tests.

Closes https://github.com/espressif/esp-idf/issues/8279
This commit is contained in:
Vamshi Gajjela
2022-03-08 00:01:48 +05:30
committed by BOT
parent 8efd164e7f
commit ebb9cc3670
6 changed files with 162 additions and 13 deletions
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4
components/vfs/include/esp_vfs.h
View File

@@ -195,6 +195,10 @@ typedef struct
int (*truncate_p)(void* ctx, const char *path, off_t length); /*!< truncate with context pointer */
int (*truncate)(const char *path, off_t length); /*!< truncate without context pointer */
};
union {
int (*ftruncate_p)(void* ctx, int fd, off_t length); /*!< ftruncate with context pointer */
int (*ftruncate)(int fd, off_t length); /*!< ftruncate without context pointer */
};
union {
int (*utime_p)(void* ctx, const char *path, const struct utimbuf *times); /*!< utime with context pointer */
int (*utime)(const char *path, const struct utimbuf *times); /*!< utime without context pointer */

16
components/vfs/vfs.c
View File

@@ -787,6 +787,20 @@ int esp_vfs_truncate(const char *path, off_t length)
return ret;
}
int esp_vfs_ftruncate(int fd, off_t length)
{
const vfs_entry_t* vfs = get_vfs_for_fd(fd);
int local_fd = get_local_fd(vfs, fd);
struct _reent* r = __getreent();
if (vfs == NULL || local_fd < 0) {
__errno_r(r) = EBADF;
return -1;
}
int ret;
CHECK_AND_CALL(ret, r, vfs, ftruncate, local_fd, length);
return ret;
}
#endif // CONFIG_VFS_SUPPORT_DIR
#ifdef CONFIG_VFS_SUPPORT_SELECT
@@ -1251,6 +1265,8 @@ int _rename_r(struct _reent *r, const char *src, const char *dst)
__attribute__((alias("esp_vfs_rename")));
int truncate(const char *path, off_t length)
__attribute__((alias("esp_vfs_truncate")));
int ftruncate(int fd, off_t length)
__attribute__((alias("esp_vfs_ftruncate")));
int access(const char *path, int amode)
__attribute__((alias("esp_vfs_access")));
int utime(const char *path, const struct utimbuf *times)