diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/hpfs/hpfs_fn.h')
| -rw-r--r-- | ANDROID_3.4.5/fs/hpfs/hpfs_fn.h | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/ANDROID_3.4.5/fs/hpfs/hpfs_fn.h b/ANDROID_3.4.5/fs/hpfs/hpfs_fn.h deleted file mode 100644 index de946170..00000000 --- a/ANDROID_3.4.5/fs/hpfs/hpfs_fn.h +++ /dev/null @@ -1,360 +0,0 @@ -/* - * linux/fs/hpfs/hpfs_fn.h - * - * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999 - * - * function headers - */ - -//#define DBG -//#define DEBUG_LOCKS - -#include <linux/mutex.h> -#include <linux/pagemap.h> -#include <linux/buffer_head.h> -#include <linux/slab.h> -#include <asm/unaligned.h> - -#include "hpfs.h" - -#define EIOERROR EIO -#define EFSERROR EPERM -#define EMEMERROR ENOMEM - -#define ANODE_ALLOC_FWD 512 -#define FNODE_ALLOC_FWD 0 -#define ALLOC_FWD_MIN 16 -#define ALLOC_FWD_MAX 128 -#define ALLOC_M 1 -#define FNODE_RD_AHEAD 16 -#define ANODE_RD_AHEAD 16 -#define DNODE_RD_AHEAD 4 - -#define FREE_DNODES_ADD 58 -#define FREE_DNODES_DEL 29 - -#define CHKCOND(x,y) if (!(x)) printk y - -#ifdef DBG -#define PRINTK(x) printk x -#else -#undef PRINTK -#define PRINTK(x) -#endif - -struct hpfs_inode_info { - loff_t mmu_private; - ino_t i_parent_dir; /* (directories) gives fnode of parent dir */ - unsigned i_dno; /* (directories) root dnode */ - unsigned i_dpos; /* (directories) temp for readdir */ - unsigned i_dsubdno; /* (directories) temp for readdir */ - unsigned i_file_sec; /* (files) minimalist cache of alloc info */ - unsigned i_disk_sec; /* (files) minimalist cache of alloc info */ - unsigned i_n_secs; /* (files) minimalist cache of alloc info */ - unsigned i_ea_size; /* size of extended attributes */ - unsigned i_ea_mode : 1; /* file's permission is stored in ea */ - unsigned i_ea_uid : 1; /* file's uid is stored in ea */ - unsigned i_ea_gid : 1; /* file's gid is stored in ea */ - unsigned i_dirty : 1; - loff_t **i_rddir_off; - struct inode vfs_inode; -}; - -struct hpfs_sb_info { - struct mutex hpfs_mutex; /* global hpfs lock */ - ino_t sb_root; /* inode number of root dir */ - unsigned sb_fs_size; /* file system size, sectors */ - unsigned sb_bitmaps; /* sector number of bitmap list */ - unsigned sb_dirband_start; /* directory band start sector */ - unsigned sb_dirband_size; /* directory band size, dnodes */ - unsigned sb_dmap; /* sector number of dnode bit map */ - unsigned sb_n_free; /* free blocks for statfs, or -1 */ - unsigned sb_n_free_dnodes; /* free dnodes for statfs, or -1 */ - uid_t sb_uid; /* uid from mount options */ - gid_t sb_gid; /* gid from mount options */ - umode_t sb_mode; /* mode from mount options */ - unsigned sb_eas : 2; /* eas: 0-ignore, 1-ro, 2-rw */ - unsigned sb_err : 2; /* on errs: 0-cont, 1-ro, 2-panic */ - unsigned sb_chk : 2; /* checks: 0-no, 1-normal, 2-strict */ - unsigned sb_lowercase : 1; /* downcase filenames hackery */ - unsigned sb_was_error : 1; /* there was an error, set dirty flag */ - unsigned sb_chkdsk : 2; /* chkdsk: 0-no, 1-on errs, 2-allways */ - unsigned char *sb_cp_table; /* code page tables: */ - /* 128 bytes uppercasing table & */ - /* 128 bytes lowercasing table */ - unsigned *sb_bmp_dir; /* main bitmap directory */ - unsigned sb_c_bitmap; /* current bitmap */ - unsigned sb_max_fwd_alloc; /* max forwad allocation */ - int sb_timeshift; -}; - -/* Four 512-byte buffers and the 2k block obtained by concatenating them */ - -struct quad_buffer_head { - struct buffer_head *bh[4]; - void *data; -}; - -/* The b-tree down pointer from a dir entry */ - -static inline dnode_secno de_down_pointer (struct hpfs_dirent *de) -{ - CHKCOND(de->down,("HPFS: de_down_pointer: !de->down\n")); - return le32_to_cpu(*(dnode_secno *) ((void *) de + le16_to_cpu(de->length) - 4)); -} - -/* The first dir entry in a dnode */ - -static inline struct hpfs_dirent *dnode_first_de (struct dnode *dnode) -{ - return (void *) dnode->dirent; -} - -/* The end+1 of the dir entries */ - -static inline struct hpfs_dirent *dnode_end_de (struct dnode *dnode) -{ - CHKCOND(le32_to_cpu(dnode->first_free)>=0x14 && le32_to_cpu(dnode->first_free)<=0xa00,("HPFS: dnode_end_de: dnode->first_free = %x\n",(unsigned)le32_to_cpu(dnode->first_free))); - return (void *) dnode + le32_to_cpu(dnode->first_free); -} - -/* The dir entry after dir entry de */ - -static inline struct hpfs_dirent *de_next_de (struct hpfs_dirent *de) -{ - CHKCOND(le16_to_cpu(de->length)>=0x20 && le16_to_cpu(de->length)<0x800,("HPFS: de_next_de: de->length = %x\n",(unsigned)le16_to_cpu(de->length))); - return (void *) de + le16_to_cpu(de->length); -} - -static inline struct extended_attribute *fnode_ea(struct fnode *fnode) -{ - return (struct extended_attribute *)((char *)fnode + le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s)); -} - -static inline struct extended_attribute *fnode_end_ea(struct fnode *fnode) -{ - return (struct extended_attribute *)((char *)fnode + le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s)); -} - -static unsigned ea_valuelen(struct extended_attribute *ea) -{ - return ea->valuelen_lo + 256 * ea->valuelen_hi; -} - -static inline struct extended_attribute *next_ea(struct extended_attribute *ea) -{ - return (struct extended_attribute *)((char *)ea + 5 + ea->namelen + ea_valuelen(ea)); -} - -static inline secno ea_sec(struct extended_attribute *ea) -{ - return le32_to_cpu(get_unaligned((secno *)((char *)ea + 9 + ea->namelen))); -} - -static inline secno ea_len(struct extended_attribute *ea) -{ - return le32_to_cpu(get_unaligned((secno *)((char *)ea + 5 + ea->namelen))); -} - -static inline char *ea_data(struct extended_attribute *ea) -{ - return (char *)((char *)ea + 5 + ea->namelen); -} - -static inline unsigned de_size(int namelen, secno down_ptr) -{ - return ((0x1f + namelen + 3) & ~3) + (down_ptr ? 4 : 0); -} - -static inline void copy_de(struct hpfs_dirent *dst, struct hpfs_dirent *src) -{ - int a; - int n; - if (!dst || !src) return; - a = dst->down; - n = dst->not_8x3; - memcpy((char *)dst + 2, (char *)src + 2, 28); - dst->down = a; - dst->not_8x3 = n; -} - -static inline unsigned tstbits(u32 *bmp, unsigned b, unsigned n) -{ - int i; - if ((b >= 0x4000) || (b + n - 1 >= 0x4000)) return n; - if (!((le32_to_cpu(bmp[(b & 0x3fff) >> 5]) >> (b & 0x1f)) & 1)) return 1; - for (i = 1; i < n; i++) - if (!((le32_to_cpu(bmp[((b+i) & 0x3fff) >> 5]) >> ((b+i) & 0x1f)) & 1)) - return i + 1; - return 0; -} - -/* alloc.c */ - -int hpfs_chk_sectors(struct super_block *, secno, int, char *); -secno hpfs_alloc_sector(struct super_block *, secno, unsigned, int); -int hpfs_alloc_if_possible(struct super_block *, secno); -void hpfs_free_sectors(struct super_block *, secno, unsigned); -int hpfs_check_free_dnodes(struct super_block *, int); -void hpfs_free_dnode(struct super_block *, secno); -struct dnode *hpfs_alloc_dnode(struct super_block *, secno, dnode_secno *, struct quad_buffer_head *); -struct fnode *hpfs_alloc_fnode(struct super_block *, secno, fnode_secno *, struct buffer_head **); -struct anode *hpfs_alloc_anode(struct super_block *, secno, anode_secno *, struct buffer_head **); - -/* anode.c */ - -secno hpfs_bplus_lookup(struct super_block *, struct inode *, struct bplus_header *, unsigned, struct buffer_head *); -secno hpfs_add_sector_to_btree(struct super_block *, secno, int, unsigned); -void hpfs_remove_btree(struct super_block *, struct bplus_header *); -int hpfs_ea_read(struct super_block *, secno, int, unsigned, unsigned, char *); -int hpfs_ea_write(struct super_block *, secno, int, unsigned, unsigned, const char *); -void hpfs_ea_remove(struct super_block *, secno, int, unsigned); -void hpfs_truncate_btree(struct super_block *, secno, int, unsigned); -void hpfs_remove_fnode(struct super_block *, fnode_secno fno); - -/* buffer.c */ - -void *hpfs_map_sector(struct super_block *, unsigned, struct buffer_head **, int); -void *hpfs_get_sector(struct super_block *, unsigned, struct buffer_head **); -void *hpfs_map_4sectors(struct super_block *, unsigned, struct quad_buffer_head *, int); -void *hpfs_get_4sectors(struct super_block *, unsigned, struct quad_buffer_head *); -void hpfs_brelse4(struct quad_buffer_head *); -void hpfs_mark_4buffers_dirty(struct quad_buffer_head *); - -/* dentry.c */ - -extern const struct dentry_operations hpfs_dentry_operations; - -/* dir.c */ - -struct dentry *hpfs_lookup(struct inode *, struct dentry *, struct nameidata *); -extern const struct file_operations hpfs_dir_ops; - -/* dnode.c */ - -void hpfs_add_pos(struct inode *, loff_t *); -void hpfs_del_pos(struct inode *, loff_t *); -struct hpfs_dirent *hpfs_add_de(struct super_block *, struct dnode *, - const unsigned char *, unsigned, secno); -int hpfs_add_dirent(struct inode *, const unsigned char *, unsigned, - struct hpfs_dirent *); -int hpfs_remove_dirent(struct inode *, dnode_secno, struct hpfs_dirent *, struct quad_buffer_head *, int); -void hpfs_count_dnodes(struct super_block *, dnode_secno, int *, int *, int *); -dnode_secno hpfs_de_as_down_as_possible(struct super_block *, dnode_secno dno); -struct hpfs_dirent *map_pos_dirent(struct inode *, loff_t *, struct quad_buffer_head *); -struct hpfs_dirent *map_dirent(struct inode *, dnode_secno, - const unsigned char *, unsigned, dnode_secno *, - struct quad_buffer_head *); -void hpfs_remove_dtree(struct super_block *, dnode_secno); -struct hpfs_dirent *map_fnode_dirent(struct super_block *, fnode_secno, struct fnode *, struct quad_buffer_head *); - -/* ea.c */ - -void hpfs_ea_ext_remove(struct super_block *, secno, int, unsigned); -int hpfs_read_ea(struct super_block *, struct fnode *, char *, char *, int); -char *hpfs_get_ea(struct super_block *, struct fnode *, char *, int *); -void hpfs_set_ea(struct inode *, struct fnode *, const char *, - const char *, int); - -/* file.c */ - -int hpfs_file_fsync(struct file *, loff_t, loff_t, int); -extern const struct file_operations hpfs_file_ops; -extern const struct inode_operations hpfs_file_iops; -extern const struct address_space_operations hpfs_aops; - -/* inode.c */ - -void hpfs_init_inode(struct inode *); -void hpfs_read_inode(struct inode *); -void hpfs_write_inode(struct inode *); -void hpfs_write_inode_nolock(struct inode *); -int hpfs_setattr(struct dentry *, struct iattr *); -void hpfs_write_if_changed(struct inode *); -void hpfs_evict_inode(struct inode *); - -/* map.c */ - -unsigned *hpfs_map_dnode_bitmap(struct super_block *, struct quad_buffer_head *); -unsigned *hpfs_map_bitmap(struct super_block *, unsigned, struct quad_buffer_head *, char *); -unsigned char *hpfs_load_code_page(struct super_block *, secno); -secno *hpfs_load_bitmap_directory(struct super_block *, secno bmp); -struct fnode *hpfs_map_fnode(struct super_block *s, ino_t, struct buffer_head **); -struct anode *hpfs_map_anode(struct super_block *s, anode_secno, struct buffer_head **); -struct dnode *hpfs_map_dnode(struct super_block *s, dnode_secno, struct quad_buffer_head *); -dnode_secno hpfs_fnode_dno(struct super_block *s, ino_t ino); - -/* name.c */ - -unsigned char hpfs_upcase(unsigned char *, unsigned char); -int hpfs_chk_name(const unsigned char *, unsigned *); -unsigned char *hpfs_translate_name(struct super_block *, unsigned char *, unsigned, int, int); -int hpfs_compare_names(struct super_block *, const unsigned char *, unsigned, - const unsigned char *, unsigned, int); -int hpfs_is_name_long(const unsigned char *, unsigned); -void hpfs_adjust_length(const unsigned char *, unsigned *); - -/* namei.c */ - -extern const struct inode_operations hpfs_dir_iops; -extern const struct address_space_operations hpfs_symlink_aops; - -static inline struct hpfs_inode_info *hpfs_i(struct inode *inode) -{ - return list_entry(inode, struct hpfs_inode_info, vfs_inode); -} - -static inline struct hpfs_sb_info *hpfs_sb(struct super_block *sb) -{ - return sb->s_fs_info; -} - -/* super.c */ - -__printf(2, 3) -void hpfs_error(struct super_block *, const char *, ...); -int hpfs_stop_cycles(struct super_block *, int, int *, int *, char *); -unsigned hpfs_count_one_bitmap(struct super_block *, secno); - -/* - * local time (HPFS) to GMT (Unix) - */ - -static inline time_t local_to_gmt(struct super_block *s, time32_t t) -{ - extern struct timezone sys_tz; - return t + sys_tz.tz_minuteswest * 60 + hpfs_sb(s)->sb_timeshift; -} - -static inline time32_t gmt_to_local(struct super_block *s, time_t t) -{ - extern struct timezone sys_tz; - return t - sys_tz.tz_minuteswest * 60 - hpfs_sb(s)->sb_timeshift; -} - -/* - * Locking: - * - * hpfs_lock() locks the whole filesystem. It must be taken - * on any method called by the VFS. - * - * We don't do any per-file locking anymore, it is hard to - * review and HPFS is not performance-sensitive anyway. - */ -static inline void hpfs_lock(struct super_block *s) -{ - struct hpfs_sb_info *sbi = hpfs_sb(s); - mutex_lock(&sbi->hpfs_mutex); -} - -static inline void hpfs_unlock(struct super_block *s) -{ - struct hpfs_sb_info *sbi = hpfs_sb(s); - mutex_unlock(&sbi->hpfs_mutex); -} - -static inline void hpfs_lock_assert(struct super_block *s) -{ - struct hpfs_sb_info *sbi = hpfs_sb(s); - WARN_ON(!mutex_is_locked(&sbi->hpfs_mutex)); -} |