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 <linux/fs.h> 14 #include "util.h" 15 16 static inline int gfs2_is_stuffed(const struct gfs2_inode *ip) 17 { 18 return !ip->i_height; 19 } 20 21 static inline int gfs2_is_jdata(const struct gfs2_inode *ip) 22 { 23 return ip->i_diskflags & GFS2_DIF_JDATA; 24 } 25 26 static inline int gfs2_is_writeback(const struct gfs2_inode *ip) 27 { 28 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 29 return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip); 30 } 31 32 static inline int gfs2_is_ordered(const struct gfs2_inode *ip) 33 { 34 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 35 return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip); 36 } 37 38 static inline int gfs2_is_dir(const struct gfs2_inode *ip) 39 { 40 return S_ISDIR(ip->i_inode.i_mode); 41 } 42 43 static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks) 44 { 45 inode->i_blocks = blocks << 46 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); 47 } 48 49 static inline u64 gfs2_get_inode_blocks(const struct inode *inode) 50 { 51 return inode->i_blocks >> 52 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); 53 } 54 55 static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change) 56 { 57 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change)); 58 change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK); 59 inode->i_blocks += change; 60 } 61 62 static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr, 63 u64 no_formal_ino) 64 { 65 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino; 66 } 67 68 static inline void gfs2_inum_out(const struct gfs2_inode *ip, 69 struct gfs2_dirent *dent) 70 { 71 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); 72 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr); 73 } 74 75 76 void gfs2_set_iop(struct inode *inode); 77 struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, 78 u64 no_addr, u64 no_formal_ino, 79 int skip_freeing); 80 struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr); 81 82 int gfs2_inode_refresh(struct gfs2_inode *ip); 83 84 int gfs2_dinode_dealloc(struct gfs2_inode *inode); 85 int gfs2_change_nlink(struct gfs2_inode *ip, int diff); 86 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, 87 int is_root); 88 struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, 89 unsigned int mode, dev_t dev); 90 int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name, 91 struct gfs2_inode *ip); 92 int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, 93 const struct gfs2_inode *ip); 94 int gfs2_permission(struct inode *inode, int mask); 95 int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len); 96 int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr); 97 struct inode *gfs2_lookup_simple(struct inode *dip, const char *name); 98 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf); 99 void gfs2_dinode_print(const struct gfs2_inode *ip); 100 101 extern const struct inode_operations gfs2_file_iops; 102 extern const struct inode_operations gfs2_dir_iops; 103 extern const struct inode_operations gfs2_symlink_iops; 104 extern const struct file_operations *gfs2_file_fops_nolock; 105 extern const struct file_operations *gfs2_dir_fops_nolock; 106 107 extern void gfs2_set_inode_flags(struct inode *inode); 108 109 #ifdef CONFIG_GFS2_FS_LOCKING_DLM 110 extern const struct file_operations *gfs2_file_fops; 111 extern const struct file_operations *gfs2_dir_fops; 112 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp) 113 { 114 return sdp->sd_args.ar_localflocks; 115 } 116 #else /* Single node only */ 117 #define gfs2_file_fops NULL 118 #define gfs2_dir_fops NULL 119 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp) 120 { 121 return 1; 122 } 123 #endif /* CONFIG_GFS2_FS_LOCKING_DLM */ 124 125 #endif /* __INODE_DOT_H__ */ 126 127