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fs: fs_unmount will return -ENOTSUP if not implemented by driver

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The commit changes error handling by fs_unmount; the function will
return -EINVAL if mount point, described by mp, is not mounted or
-ENNOTSUP when unmounting is not supported by the driver; in the second
case it will also log error.

Additionally to the above changes, checks for correct mnt_path and
mnt_path, within fs_unmount, have been removed as they are not needed;
only the fs_mount_t->fs pointer is needed to decide whether system is
mounted or not.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
This commit is contained in:
Dominik Ermel 2020-10-15 13:26:59 +00:00 • committed by Carles Cufí
commit e7886c6634
3 changed files with 17 additions and 10 deletions
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4
include/fs/fs.h
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@ -416,7 +416,9 @@ int fs_mount(struct fs_mount_t *mp);
* @param mp Pointer to the fs_mount_t structure
*
* @retval 0 on success;
* @retval <0 negative errno code on error.
* @retval -EINVAL if no system has been mounted at given mount point;
* @retval -ENOTSUP when not supported by underlying file system driver;
* @retval <0 an other negative errno code on error.
*/
int fs_unmount(struct fs_mount_t *mp);