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fs: fat: support unlink

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In this patch, unlink support is added to FAT file system.
A directory can be deleted only if it is empty.

In this implementation, only a directory entry for a short file name
will be removed. So entries for a long file name can and should be
reclaimed with fsck.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
AKASHI Takahiro
2018-09-11 15:59:14 +09:00
committed by Alexander Graf
parent e2519daf5c
commit f8240ce95d
3 changed files with 135 additions and 1 deletions
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include/fat.h
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@@ -203,6 +203,7 @@ int fat_read_file(const char *filename, void *buf, loff_t offset, loff_t len,
int fat_opendir(const char *filename, struct fs_dir_stream **dirsp);
int fat_readdir(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
void fat_closedir(struct fs_dir_stream *dirs);
int fat_unlink(const char *filename);
int fat_mkdir(const char *dirname);
void fat_close(void);
#endif /* _FAT_H_ */