fs/gfs2/inode.h

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   4  *
   5  * This copyrighted material is made available to anyone wishing to use,
   6  * modify, copy, or redistribute it subject to the terms and conditions
   7  * of the GNU General Public License version 2.
   8  */
   9
  10 #ifndef __INODE_DOT_H__
  11 #define __INODE_DOT_H__
  12
  13 static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
  14 {
  15         return !ip->i_di.di_height;
  16 }
  17
  18 static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
  19 {
  20         return ip->i_di.di_flags & GFS2_DIF_JDATA;
  21 }
  22
  23 static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
  24 {
  25         const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
  26         return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
  27 }
  28
  29 static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
  30 {
  31         const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
  32         return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
  33 }
  34
  35 static inline int gfs2_is_dir(const struct gfs2_inode *ip)
  36 {
  37         return S_ISDIR(ip->i_inode.i_mode);
  38 }
  39
  40 static inline void gfs2_set_inode_blocks(struct inode *inode)
  41 {
  42         struct gfs2_inode *ip = GFS2_I(inode);
  43         inode->i_blocks = ip->i_di.di_blocks <<
  44                 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
  45 }
  46
  47 static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
  48                                   u64 no_formal_ino)
  49 {
  50         return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
  51 }
  52
  53 static inline void gfs2_inum_out(const struct gfs2_inode *ip,
  54                                  struct gfs2_dirent *dent)
  55 {
  56         dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
  57         dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
  58 }
  59
  60
  61 void gfs2_inode_attr_in(struct gfs2_inode *ip);
  62 void gfs2_set_iop(struct inode *inode);
  63 struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
  64                                 u64 no_addr, u64 no_formal_ino,
  65                                 int skip_freeing);
  66 struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);
  67
  68 int gfs2_inode_refresh(struct gfs2_inode *ip);
  69
  70 int gfs2_dinode_dealloc(struct gfs2_inode *inode);
  71 int gfs2_change_nlink(struct gfs2_inode *ip, int diff);
  72 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
  73                            int is_root, struct nameidata *nd);
  74 struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
  75                            unsigned int mode, dev_t dev);
  76 int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
  77                 struct gfs2_inode *ip);
  78 int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
  79                    const struct gfs2_inode *ip);
  80 int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to);
  81 int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len);
  82 int gfs2_glock_nq_atime(struct gfs2_holder *gh);
  83 int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr);
  84 struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
  85 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
  86 void gfs2_dinode_print(const struct gfs2_inode *ip);
  87
  88 #endif /* __INODE_DOT_H__ */
  89