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| author | Jeff Garzik <jgarzik@pobox.com> | 2005-11-05 15:39:24 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-11-05 15:39:24 -0500 |
| commit | 7211bb9b64f17b23834d91fc3d0c1d78671ee9a8 (patch) | |
| tree | 541909f86c31fee97cd70d28ec2fe5c23e1ceb02 /include/linux/msdos_fs.h | |
| parent | f1e691a24955ea987f021f378324fb5003b1b208 (diff) | |
| parent | 70d9d825e0a5a78ec1dacaaaf5c72ff5b0206fab (diff) | |
| download | kernel_samsung_smdk4412-7211bb9b64f17b23834d91fc3d0c1d78671ee9a8.zip kernel_samsung_smdk4412-7211bb9b64f17b23834d91fc3d0c1d78671ee9a8.tar.gz kernel_samsung_smdk4412-7211bb9b64f17b23834d91fc3d0c1d78671ee9a8.tar.bz2 | |
Merge branch 'master'
Diffstat (limited to 'include/linux/msdos_fs.h')
| -rw-r--r-- | include/linux/msdos_fs.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/msdos_fs.h b/include/linux/msdos_fs.h index 9a3d272..941da5c 100644 --- a/include/linux/msdos_fs.h +++ b/include/linux/msdos_fs.h @@ -282,6 +282,17 @@ static inline u8 fat_attr(struct inode *inode) MSDOS_I(inode)->i_attrs; } +static inline unsigned char fat_checksum(const __u8 *name) +{ + unsigned char s = name[0]; + s = (s<<7) + (s>>1) + name[1]; s = (s<<7) + (s>>1) + name[2]; + s = (s<<7) + (s>>1) + name[3]; s = (s<<7) + (s>>1) + name[4]; + s = (s<<7) + (s>>1) + name[5]; s = (s<<7) + (s>>1) + name[6]; + s = (s<<7) + (s>>1) + name[7]; s = (s<<7) + (s>>1) + name[8]; + s = (s<<7) + (s>>1) + name[9]; s = (s<<7) + (s>>1) + name[10]; + return s; +} + static inline sector_t fat_clus_to_blknr(struct msdos_sb_info *sbi, int clus) { return ((sector_t)clus - FAT_START_ENT) * sbi->sec_per_clus |