From 82e4ab6ebfb388e9fc2dffc9fa25639d5c817212 Mon Sep 17 00:00:00 2001 From: Mike Lockwood Date: Sat, 15 Mar 2008 13:29:36 -0400 Subject: FAT: Add new ioctl VFAT_IOCTL_GET_VOLUME_ID for reading the volume ID. Signed-off-by: Brian Swetland --- include/linux/msdos_fs.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include') diff --git a/include/linux/msdos_fs.h b/include/linux/msdos_fs.h index ce38f1caa5e1..844d77ddfb34 100644 --- a/include/linux/msdos_fs.h +++ b/include/linux/msdos_fs.h @@ -100,6 +100,7 @@ struct __fat_dirent { /* has used 0x72 ('r') in collision, so skip a few */ #define FAT_IOCTL_GET_ATTRIBUTES _IOR('r', 0x10, __u32) #define FAT_IOCTL_SET_ATTRIBUTES _IOW('r', 0x11, __u32) +#define VFAT_IOCTL_GET_VOLUME_ID _IOR('r', 0x12, __u32) struct fat_boot_sector { __u8 ignored[3]; /* Boot strap short or near jump */ @@ -137,6 +138,17 @@ struct fat_boot_fsinfo { __le32 reserved2[4]; }; +struct fat_boot_bsx { + __u8 drive; /* drive number */ + __u8 reserved1; + __u8 signature; /* extended boot signature */ + __u8 vol_id[4]; /* volume ID */ + __u8 vol_label[11]; /* volume label */ + __u8 type[8]; /* file system type */ +}; +#define FAT16_BSX_OFFSET 36 /* offset of fat_boot_bsx in FAT12 and FAT16 */ +#define FAT32_BSX_OFFSET 64 /* offset of fat_boot_bsx in FAT32 */ + struct msdos_dir_entry { __u8 name[MSDOS_NAME];/* name and extension */ __u8 attr; /* attribute bits */ -- cgit v1.2.3