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fs/fat: implement fsuuid command

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The FAT file system does not have a UUID but a 4 byte volume ID.
Let the fsuuid command show it in XXXX-XXXX format.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt
2020-12-31 00:38:13 +01:00
parent d0be67657d
commit c0029e4e25
3 changed files with 31 additions and 1 deletions
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12
include/fat.h
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@@ -212,4 +212,16 @@ int fat_unlink(const char *filename);
int fat_mkdir(const char *dirname);
void fat_close(void);
void *fat_next_cluster(fat_itr *itr, unsigned int *nbytes);
/**
* fat_uuid() - get FAT volume ID
*
* The FAT volume ID returned in @uuid_str as hexadecimal number in XXXX-XXXX
* format.
*
* @uuid_str: caller allocated buffer of at least 10 bytes for the volume ID
* Return: 0 on success
*/
int fat_uuid(char *uuid_str);
#endif /* _FAT_H_ */