git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _ADFS_FS_H |
| 2 | #define _ADFS_FS_H | |
| 3 | ||
| 4 | #include <linux/types.h> | |
| 5 | ||
| 6 | /* | |
| 7 | * Disc Record at disc address 0xc00 | |
| 8 | */ | |
| 9 | struct adfs_discrecord { | |
| 10 | __u8 log2secsize; | |
| 11 | __u8 secspertrack; | |
| 12 | __u8 heads; | |
| 13 | __u8 density; | |
| 14 | __u8 idlen; | |
| 15 | __u8 log2bpmb; | |
| 16 | __u8 skew; | |
| 17 | __u8 bootoption; | |
| 18 | __u8 lowsector; | |
| 19 | __u8 nzones; | |
| 20 | __le16 zone_spare; | |
| 21 | __le32 root; | |
| 22 | __le32 disc_size; | |
| 23 | __le16 disc_id; | |
| 24 | __u8 disc_name[10]; | |
| 25 | __le32 disc_type; | |
| 26 | __le32 disc_size_high; | |
| 27 | __u8 log2sharesize:4; | |
| 28 | __u8 unused40:4; | |
| 29 | __u8 big_flag:1; | |
| 30 | __u8 unused41:1; | |
| 31 | __u8 nzones_high; | |
| 32 | __le32 format_version; | |
| 33 | __le32 root_size; | |
| 34 | __u8 unused52[60 - 52]; | |
| 35 | }; | |
| 36 | ||
| 37 | #define ADFS_DISCRECORD (0xc00) | |
| 38 | #define ADFS_DR_OFFSET (0x1c0) | |
| 39 | #define ADFS_DR_SIZE 60 | |
| 40 | #define ADFS_DR_SIZE_BITS (ADFS_DR_SIZE << 3) | |
| 41 | #define ADFS_SUPER_MAGIC 0xadf5 | |
| 42 | ||
| 43 | #ifdef __KERNEL__ | |
| 44 | #include <linux/adfs_fs_i.h> | |
| 45 | #include <linux/adfs_fs_sb.h> | |
| 46 | /* | |
| 47 | * Calculate the boot block checksum on an ADFS drive. Note that this will | |
| 48 | * appear to be correct if the sector contains all zeros, so also check that | |
| 49 | * the disk size is non-zero!!! | |
| 50 | */ | |
| 51 | static inline int adfs_checkbblk(unsigned char *ptr) | |
| 52 | { | |
| 53 | unsigned int result = 0; | |
| 54 | unsigned char *p = ptr + 511; | |
| 55 | ||
| 56 | do { | |
| 57 | result = (result & 0xff) + (result >> 8); | |
| 58 | result = result + *--p; | |
| 59 | } while (p != ptr); | |
| 60 | ||
| 61 | return (result & 0xff) != ptr[511]; | |
| 62 | } | |
| 63 | ||
| 64 | static inline struct adfs_sb_info *ADFS_SB(struct super_block *sb) | |
| 65 | { | |
| 66 | return sb->s_fs_info; | |
| 67 | } | |
| 68 | ||
| 69 | static inline struct adfs_inode_info *ADFS_I(struct inode *inode) | |
| 70 | { | |
| 71 | return container_of(inode, struct adfs_inode_info, vfs_inode); | |
| 72 | } | |
| 73 | ||
| 74 | #endif | |
| 75 | ||
| 76 | #endif |