diff options
Diffstat (limited to 'include/linux/qnx4_fs.h')
| -rw-r--r-- | include/linux/qnx4_fs.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/include/linux/qnx4_fs.h b/include/linux/qnx4_fs.h new file mode 100644 index 00000000000..22ba580b0ae --- /dev/null +++ b/include/linux/qnx4_fs.h @@ -0,0 +1,150 @@ +/* + * Name : qnx4_fs.h + * Author : Richard Frowijn + * Function : qnx4 global filesystem definitions + * Version : 1.0.2 + * Last modified : 2000-01-31 + * + * History : 23-03-1998 created + */ +#ifndef _LINUX_QNX4_FS_H +#define _LINUX_QNX4_FS_H + +#include <linux/qnxtypes.h> + +#define QNX4_ROOT_INO 1 + +#define QNX4_MAX_XTNTS_PER_XBLK 60 +/* for di_status */ +#define QNX4_FILE_USED 0x01 +#define QNX4_FILE_MODIFIED 0x02 +#define QNX4_FILE_BUSY 0x04 +#define QNX4_FILE_LINK 0x08 +#define QNX4_FILE_INODE 0x10 +#define QNX4_FILE_FSYSCLEAN 0x20 + +#define QNX4_I_MAP_SLOTS 8 +#define QNX4_Z_MAP_SLOTS 64 +#define QNX4_SUPER_MAGIC 0x002f /* qnx4 fs detection */ +#define QNX4_VALID_FS 0x0001 /* Clean fs. */ +#define QNX4_ERROR_FS 0x0002 /* fs has errors. */ +#define QNX4_BLOCK_SIZE 0x200 /* blocksize of 512 bytes */ +#define QNX4_BLOCK_SIZE_BITS 9 /* blocksize shift */ +#define QNX4_DIR_ENTRY_SIZE 0x040 /* dir entry size of 64 bytes */ +#define QNX4_DIR_ENTRY_SIZE_BITS 6 /* dir entry size shift */ +#define QNX4_XBLK_ENTRY_SIZE 0x200 /* xblk entry size */ +#define QNX4_INODES_PER_BLOCK 0x08 /* 512 / 64 */ + +/* for filenames */ +#define QNX4_SHORT_NAME_MAX 16 +#define QNX4_NAME_MAX 48 + +/* + * This is the original qnx4 inode layout on disk. + */ +struct qnx4_inode_entry { + char di_fname[QNX4_SHORT_NAME_MAX]; + qnx4_off_t di_size; + qnx4_xtnt_t di_first_xtnt; + __u32 di_xblk; + __s32 di_ftime; + __s32 di_mtime; + __s32 di_atime; + __s32 di_ctime; + qnx4_nxtnt_t di_num_xtnts; + qnx4_mode_t di_mode; + qnx4_muid_t di_uid; + qnx4_mgid_t di_gid; + qnx4_nlink_t di_nlink; + __u8 di_zero[4]; + qnx4_ftype_t di_type; + __u8 di_status; +}; + +struct qnx4_link_info { + char dl_fname[QNX4_NAME_MAX]; + __u32 dl_inode_blk; + __u8 dl_inode_ndx; + __u8 dl_spare[10]; + __u8 dl_status; +}; + +struct qnx4_xblk { + __u32 xblk_next_xblk; + __u32 xblk_prev_xblk; + __u8 xblk_num_xtnts; + __u8 xblk_spare[3]; + __s32 xblk_num_blocks; + qnx4_xtnt_t xblk_xtnts[QNX4_MAX_XTNTS_PER_XBLK]; + char xblk_signature[8]; + qnx4_xtnt_t xblk_first_xtnt; +}; + +struct qnx4_super_block { + struct qnx4_inode_entry RootDir; + struct qnx4_inode_entry Inode; + struct qnx4_inode_entry Boot; + struct qnx4_inode_entry AltBoot; +}; + +#ifdef __KERNEL__ + +#define QNX4_DEBUG 0 + +#if QNX4_DEBUG +#define QNX4DEBUG(X) printk X +#else +#define QNX4DEBUG(X) (void) 0 +#endif + +struct qnx4_sb_info { + struct buffer_head *sb_buf; /* superblock buffer */ + struct qnx4_super_block *sb; /* our superblock */ + unsigned int Version; /* may be useful */ + struct qnx4_inode_entry *BitMap; /* useful */ +}; + +struct qnx4_inode_info { + struct qnx4_inode_entry raw; + loff_t mmu_private; + struct inode vfs_inode; +}; + +extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd); +extern unsigned long qnx4_count_free_blocks(struct super_block *sb); +extern unsigned long qnx4_block_map(struct inode *inode, long iblock); + +extern struct buffer_head *qnx4_bread(struct inode *, int, int); + +extern struct inode_operations qnx4_file_inode_operations; +extern struct inode_operations qnx4_dir_inode_operations; +extern struct file_operations qnx4_file_operations; +extern struct file_operations qnx4_dir_operations; +extern int qnx4_is_free(struct super_block *sb, long block); +extern int qnx4_set_bitmap(struct super_block *sb, long block, int busy); +extern int qnx4_create(struct inode *inode, struct dentry *dentry, int mode, struct nameidata *nd); +extern void qnx4_truncate(struct inode *inode); +extern void qnx4_free_inode(struct inode *inode); +extern int qnx4_unlink(struct inode *dir, struct dentry *dentry); +extern int qnx4_rmdir(struct inode *dir, struct dentry *dentry); +extern int qnx4_sync_file(struct file *file, struct dentry *dentry, int); +extern int qnx4_sync_inode(struct inode *inode); + +static inline struct qnx4_sb_info *qnx4_sb(struct super_block *sb) +{ + return sb->s_fs_info; +} + +static inline struct qnx4_inode_info *qnx4_i(struct inode *inode) +{ + return container_of(inode, struct qnx4_inode_info, vfs_inode); +} + +static inline struct qnx4_inode_entry *qnx4_raw_inode(struct inode *inode) +{ + return &qnx4_i(inode)->raw; +} + +#endif /* __KERNEL__ */ + +#endif |