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 #include "util.h" 14 15 static inline int gfs2_is_stuffed(const struct gfs2_inode *ip) 16 { 17 return !ip->i_height; 18 } 19 20 static inline int gfs2_is_jdata(const struct gfs2_inode *ip) 21 { 22 return ip->i_di.di_flags & GFS2_DIF_JDATA; 23 } 24 25 static inline int gfs2_is_writeback(const struct gfs2_inode *ip) 26 { 27 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 28 return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip); 29 } 30 31 static inline int gfs2_is_ordered(const struct gfs2_inode *ip) 32 { 33 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 34 return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip); 35 } 36 37 static inline int gfs2_is_dir(const struct gfs2_inode *ip) 38 { 39 return S_ISDIR(ip->i_inode.i_mode); 40 } 41 42 static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks) 43 { 44 inode->i_blocks = blocks << 45 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); 46 } 47 48 static inline u64 gfs2_get_inode_blocks(const struct inode *inode) 49 { 50 return inode->i_blocks >> 51 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); 52 } 53 54 static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change) 55 { 56 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change)); 57 change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK); 58 inode->i_blocks += change; 59 } 60 61 static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr, 62 u64 no_formal_ino) 63 { 64 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino; 65 } 66 67 static inline void gfs2_inum_out(const struct gfs2_inode *ip, 68 struct gfs2_dirent *dent) 69 { 70 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); 71 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr); 72 } 73 74 75 void gfs2_set_iop(struct inode *inode); 76 struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, 77 u64 no_addr, u64 no_formal_ino, 78 int skip_freeing); 79 struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr); 80 81 int gfs2_inode_refresh(struct gfs2_inode *ip); 82 83 int gfs2_dinode_dealloc(struct gfs2_inode *inode); 84 int gfs2_change_nlink(struct gfs2_inode *ip, int diff); 85 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, 86 int is_root); 87 struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, 88 unsigned int mode, dev_t dev); 89 int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name, 90 struct gfs2_inode *ip); 91 int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, 92 const struct gfs2_inode *ip); 93 int gfs2_permission(struct inode *inode, int mask); 94 int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to); 95 int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len); 96 int gfs2_glock_nq_atime(struct gfs2_holder *gh); 97 int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr); 98 struct inode *gfs2_lookup_simple(struct inode *dip, const char *name); 99 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf); 100 void gfs2_dinode_print(const struct gfs2_inode *ip); 101 102 #endif /* __INODE_DOT_H__ */ 103 104