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| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-12-31 00:38:13 +0100 |
|---|---|---|
| committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-12-31 14:32:27 +0100 |
| commit | c0029e4e25c10d627f4bff62cdb4074bb2c7eaf7 (patch) | |
| tree | a7383efef0e84fc0eac5386eadd10c2fd8ee0c09 | |
| parent | d0be67657d64523b4499d385390c08c2bafab1bc (diff) | |
| download | u-boot-c0029e4e25c10d627f4bff62cdb4074bb2c7eaf7.tar.gz | |
fs/fat: implement fsuuid command
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>
| -rw-r--r-- | fs/fat/fat.c | 18 | ||||
| -rw-r--r-- | fs/fs.c | 2 | ||||
| -rw-r--r-- | include/fat.h | 12 |
3 files changed, 31 insertions, 1 deletions
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index c9742d534b..157dad60a4 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -1377,3 +1377,21 @@ void fat_closedir(struct fs_dir_stream *dirs) void fat_close(void) { } + +int fat_uuid(char *uuid_str) +{ + boot_sector bs; + volume_info volinfo; + int fatsize; + int ret; + u8 *id; + + ret = read_bootsectandvi(&bs, &volinfo, &fatsize); + if (ret) + return ret; + + id = volinfo.volume_id; + sprintf(uuid_str, "%02X%02X-%02X%02X", id[3], id[2], id[1], id[0]); + + return 0; +} @@ -194,7 +194,7 @@ static struct fstype_info fstypes[] = { .unlink = fs_unlink_unsupported, .mkdir = fs_mkdir_unsupported, #endif - .uuid = fs_uuid_unsupported, + .uuid = fat_uuid, .opendir = fat_opendir, .readdir = fat_readdir, .closedir = fat_closedir, diff --git a/include/fat.h b/include/fat.h index 8cae283030..b9f273f381 100644 --- a/include/fat.h +++ b/include/fat.h @@ -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_ */ |