summaryrefslogtreecommitdiff
path: root/ANDROID_3.4.5/fs/sysv/sysv.h
diff options
context:
space:
mode:
Diffstat (limited to 'ANDROID_3.4.5/fs/sysv/sysv.h')
-rw-r--r--ANDROID_3.4.5/fs/sysv/sysv.h247
1 files changed, 0 insertions, 247 deletions
diff --git a/ANDROID_3.4.5/fs/sysv/sysv.h b/ANDROID_3.4.5/fs/sysv/sysv.h
deleted file mode 100644
index 11b07672..00000000
--- a/ANDROID_3.4.5/fs/sysv/sysv.h
+++ /dev/null
@@ -1,247 +0,0 @@
-#ifndef _SYSV_H
-#define _SYSV_H
-
-#include <linux/buffer_head.h>
-
-typedef __u16 __bitwise __fs16;
-typedef __u32 __bitwise __fs32;
-
-#include <linux/sysv_fs.h>
-
-/*
- * SystemV/V7/Coherent super-block data in memory
- *
- * The SystemV/V7/Coherent superblock contains dynamic data (it gets modified
- * while the system is running). This is in contrast to the Minix and Berkeley
- * filesystems (where the superblock is never modified). This affects the
- * sync() operation: we must keep the superblock in a disk buffer and use this
- * one as our "working copy".
- */
-
-struct sysv_sb_info {
- struct super_block *s_sb; /* VFS superblock */
- int s_type; /* file system type: FSTYPE_{XENIX|SYSV|COH} */
- char s_bytesex; /* bytesex (le/be/pdp) */
- char s_truncate; /* if 1: names > SYSV_NAMELEN chars are truncated */
- /* if 0: they are disallowed (ENAMETOOLONG) */
- unsigned int s_inodes_per_block; /* number of inodes per block */
- unsigned int s_inodes_per_block_1; /* inodes_per_block - 1 */
- unsigned int s_inodes_per_block_bits; /* log2(inodes_per_block) */
- unsigned int s_ind_per_block; /* number of indirections per block */
- unsigned int s_ind_per_block_bits; /* log2(ind_per_block) */
- unsigned int s_ind_per_block_2; /* ind_per_block ^ 2 */
- unsigned int s_toobig_block; /* 10 + ipb + ipb^2 + ipb^3 */
- unsigned int s_block_base; /* physical block number of block 0 */
- unsigned short s_fic_size; /* free inode cache size, NICINOD */
- unsigned short s_flc_size; /* free block list chunk size, NICFREE */
- /* The superblock is kept in one or two disk buffers: */
- struct buffer_head *s_bh1;
- struct buffer_head *s_bh2;
- /* These are pointers into the disk buffer, to compensate for
- different superblock layout. */
- char * s_sbd1; /* entire superblock data, for part 1 */
- char * s_sbd2; /* entire superblock data, for part 2 */
- __fs16 *s_sb_fic_count; /* pointer to s_sbd->s_ninode */
- sysv_ino_t *s_sb_fic_inodes; /* pointer to s_sbd->s_inode */
- __fs16 *s_sb_total_free_inodes; /* pointer to s_sbd->s_tinode */
- __fs16 *s_bcache_count; /* pointer to s_sbd->s_nfree */
- sysv_zone_t *s_bcache; /* pointer to s_sbd->s_free */
- __fs32 *s_free_blocks; /* pointer to s_sbd->s_tfree */
- __fs32 *s_sb_time; /* pointer to s_sbd->s_time */
- __fs32 *s_sb_state; /* pointer to s_sbd->s_state, only FSTYPE_SYSV */
- /* We keep those superblock entities that don't change here;
- this saves us an indirection and perhaps a conversion. */
- u32 s_firstinodezone; /* index of first inode zone */
- u32 s_firstdatazone; /* same as s_sbd->s_isize */
- u32 s_ninodes; /* total number of inodes */
- u32 s_ndatazones; /* total number of data zones */
- u32 s_nzones; /* same as s_sbd->s_fsize */
- u16 s_namelen; /* max length of dir entry */
- int s_forced_ro;
-};
-
-/*
- * SystemV/V7/Coherent FS inode data in memory
- */
-struct sysv_inode_info {
- __fs32 i_data[13];
- u32 i_dir_start_lookup;
- struct inode vfs_inode;
-};
-
-
-static inline struct sysv_inode_info *SYSV_I(struct inode *inode)
-{
- return list_entry(inode, struct sysv_inode_info, vfs_inode);
-}
-
-static inline struct sysv_sb_info *SYSV_SB(struct super_block *sb)
-{
- return sb->s_fs_info;
-}
-
-
-/* identify the FS in memory */
-enum {
- FSTYPE_NONE = 0,
- FSTYPE_XENIX,
- FSTYPE_SYSV4,
- FSTYPE_SYSV2,
- FSTYPE_COH,
- FSTYPE_V7,
- FSTYPE_AFS,
- FSTYPE_END,
-};
-
-#define SYSV_MAGIC_BASE 0x012FF7B3
-
-#define XENIX_SUPER_MAGIC (SYSV_MAGIC_BASE+FSTYPE_XENIX)
-#define SYSV4_SUPER_MAGIC (SYSV_MAGIC_BASE+FSTYPE_SYSV4)
-#define SYSV2_SUPER_MAGIC (SYSV_MAGIC_BASE+FSTYPE_SYSV2)
-#define COH_SUPER_MAGIC (SYSV_MAGIC_BASE+FSTYPE_COH)
-
-
-/* Admissible values for i_nlink: 0.._LINK_MAX */
-enum {
- XENIX_LINK_MAX = 126, /* ?? */
- SYSV_LINK_MAX = 126, /* 127? 251? */
- V7_LINK_MAX = 126, /* ?? */
- COH_LINK_MAX = 10000,
-};
-
-
-static inline void dirty_sb(struct super_block *sb)
-{
- struct sysv_sb_info *sbi = SYSV_SB(sb);
-
- mark_buffer_dirty(sbi->s_bh1);
- if (sbi->s_bh1 != sbi->s_bh2)
- mark_buffer_dirty(sbi->s_bh2);
- sb->s_dirt = 1;
-}
-
-
-/* ialloc.c */
-extern struct sysv_inode *sysv_raw_inode(struct super_block *, unsigned,
- struct buffer_head **);
-extern struct inode * sysv_new_inode(const struct inode *, umode_t);
-extern void sysv_free_inode(struct inode *);
-extern unsigned long sysv_count_free_inodes(struct super_block *);
-
-/* balloc.c */
-extern sysv_zone_t sysv_new_block(struct super_block *);
-extern void sysv_free_block(struct super_block *, sysv_zone_t);
-extern unsigned long sysv_count_free_blocks(struct super_block *);
-
-/* itree.c */
-extern void sysv_truncate(struct inode *);
-extern int sysv_prepare_chunk(struct page *page, loff_t pos, unsigned len);
-
-/* inode.c */
-extern struct inode *sysv_iget(struct super_block *, unsigned int);
-extern int sysv_write_inode(struct inode *, struct writeback_control *wbc);
-extern int sysv_sync_inode(struct inode *);
-extern void sysv_set_inode(struct inode *, dev_t);
-extern int sysv_getattr(struct vfsmount *, struct dentry *, struct kstat *);
-extern int sysv_init_icache(void);
-extern void sysv_destroy_icache(void);
-
-
-/* dir.c */
-extern struct sysv_dir_entry *sysv_find_entry(struct dentry *, struct page **);
-extern int sysv_add_link(struct dentry *, struct inode *);
-extern int sysv_delete_entry(struct sysv_dir_entry *, struct page *);
-extern int sysv_make_empty(struct inode *, struct inode *);
-extern int sysv_empty_dir(struct inode *);
-extern void sysv_set_link(struct sysv_dir_entry *, struct page *,
- struct inode *);
-extern struct sysv_dir_entry *sysv_dotdot(struct inode *, struct page **);
-extern ino_t sysv_inode_by_name(struct dentry *);
-
-
-extern const struct inode_operations sysv_file_inode_operations;
-extern const struct inode_operations sysv_dir_inode_operations;
-extern const struct inode_operations sysv_fast_symlink_inode_operations;
-extern const struct file_operations sysv_file_operations;
-extern const struct file_operations sysv_dir_operations;
-extern const struct address_space_operations sysv_aops;
-extern const struct super_operations sysv_sops;
-extern const struct dentry_operations sysv_dentry_operations;
-
-
-enum {
- BYTESEX_LE,
- BYTESEX_PDP,
- BYTESEX_BE,
-};
-
-static inline u32 PDP_swab(u32 x)
-{
-#ifdef __LITTLE_ENDIAN
- return ((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16);
-#else
-#ifdef __BIG_ENDIAN
- return ((x & 0xff00ff) << 8) | ((x & 0xff00ff00) >> 8);
-#else
-#error BYTESEX
-#endif
-#endif
-}
-
-static inline __u32 fs32_to_cpu(struct sysv_sb_info *sbi, __fs32 n)
-{
- if (sbi->s_bytesex == BYTESEX_PDP)
- return PDP_swab((__force __u32)n);
- else if (sbi->s_bytesex == BYTESEX_LE)
- return le32_to_cpu((__force __le32)n);
- else
- return be32_to_cpu((__force __be32)n);
-}
-
-static inline __fs32 cpu_to_fs32(struct sysv_sb_info *sbi, __u32 n)
-{
- if (sbi->s_bytesex == BYTESEX_PDP)
- return (__force __fs32)PDP_swab(n);
- else if (sbi->s_bytesex == BYTESEX_LE)
- return (__force __fs32)cpu_to_le32(n);
- else
- return (__force __fs32)cpu_to_be32(n);
-}
-
-static inline __fs32 fs32_add(struct sysv_sb_info *sbi, __fs32 *n, int d)
-{
- if (sbi->s_bytesex == BYTESEX_PDP)
- *(__u32*)n = PDP_swab(PDP_swab(*(__u32*)n)+d);
- else if (sbi->s_bytesex == BYTESEX_LE)
- le32_add_cpu((__le32 *)n, d);
- else
- be32_add_cpu((__be32 *)n, d);
- return *n;
-}
-
-static inline __u16 fs16_to_cpu(struct sysv_sb_info *sbi, __fs16 n)
-{
- if (sbi->s_bytesex != BYTESEX_BE)
- return le16_to_cpu((__force __le16)n);
- else
- return be16_to_cpu((__force __be16)n);
-}
-
-static inline __fs16 cpu_to_fs16(struct sysv_sb_info *sbi, __u16 n)
-{
- if (sbi->s_bytesex != BYTESEX_BE)
- return (__force __fs16)cpu_to_le16(n);
- else
- return (__force __fs16)cpu_to_be16(n);
-}
-
-static inline __fs16 fs16_add(struct sysv_sb_info *sbi, __fs16 *n, int d)
-{
- if (sbi->s_bytesex != BYTESEX_BE)
- le16_add_cpu((__le16 *)n, d);
- else
- be16_add_cpu((__be16 *)n, d);
- return *n;
-}
-
-#endif /* _SYSV_H */