Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
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 | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
10 | #ifndef __INODE_DOT_H__ | |
11 | #define __INODE_DOT_H__ | |
12 | ||
b2760583 | 13 | #include <linux/fs.h> |
b1e71b06 SW |
14 | #include <linux/buffer_head.h> |
15 | #include <linux/mm.h> | |
77658aad SW |
16 | #include "util.h" |
17 | ||
b1e71b06 SW |
18 | extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask); |
19 | extern int gfs2_internal_read(struct gfs2_inode *ip, | |
b1e71b06 SW |
20 | char *buf, loff_t *pos, unsigned size); |
21 | extern void gfs2_set_aops(struct inode *inode); | |
22 | ||
dbb7cae2 | 23 | static inline int gfs2_is_stuffed(const struct gfs2_inode *ip) |
b3b94faa | 24 | { |
ecc30c79 | 25 | return !ip->i_height; |
b3b94faa DT |
26 | } |
27 | ||
dbb7cae2 | 28 | static inline int gfs2_is_jdata(const struct gfs2_inode *ip) |
b3b94faa | 29 | { |
383f01fb | 30 | return ip->i_diskflags & GFS2_DIF_JDATA; |
b3b94faa DT |
31 | } |
32 | ||
977767a7 | 33 | static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp) |
bf36a713 | 34 | { |
977767a7 | 35 | return sdp->sd_args.ar_data == GFS2_DATA_ORDERED; |
bf36a713 SW |
36 | } |
37 | ||
977767a7 | 38 | static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp) |
5561093e | 39 | { |
977767a7 | 40 | return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK; |
5561093e SW |
41 | } |
42 | ||
dbb7cae2 | 43 | static inline int gfs2_is_dir(const struct gfs2_inode *ip) |
18ec7d5c | 44 | { |
b60623c2 | 45 | return S_ISDIR(ip->i_inode.i_mode); |
18ec7d5c SW |
46 | } |
47 | ||
77658aad SW |
48 | static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks) |
49 | { | |
50 | inode->i_blocks = blocks << | |
51 | (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); | |
52 | } | |
53 | ||
54 | static inline u64 gfs2_get_inode_blocks(const struct inode *inode) | |
9e2dbdac | 55 | { |
77658aad | 56 | return inode->i_blocks >> |
9e2dbdac SW |
57 | (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); |
58 | } | |
59 | ||
77658aad SW |
60 | static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change) |
61 | { | |
7c03e756 TS |
62 | change <<= inode->i_blkbits - GFS2_BASIC_BLOCK_SHIFT; |
63 | gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change)); | |
77658aad SW |
64 | inode->i_blocks += change; |
65 | } | |
66 | ||
dbb7cae2 SW |
67 | static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr, |
68 | u64 no_formal_ino) | |
69 | { | |
70 | return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino; | |
71 | } | |
72 | ||
bb8d8a6f SW |
73 | static inline void gfs2_inum_out(const struct gfs2_inode *ip, |
74 | struct gfs2_dirent *dent) | |
75 | { | |
76 | dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); | |
77 | dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr); | |
78 | } | |
79 | ||
a2e0f799 SW |
80 | static inline int gfs2_check_internal_file_size(struct inode *inode, |
81 | u64 minsize, u64 maxsize) | |
82 | { | |
83 | u64 size = i_size_read(inode); | |
84 | if (size < minsize || size > maxsize) | |
85 | goto err; | |
47a9a527 | 86 | if (size & (BIT(inode->i_blkbits) - 1)) |
a2e0f799 SW |
87 | goto err; |
88 | return 0; | |
89 | err: | |
90 | gfs2_consist_inode(GFS2_I(inode)); | |
91 | return -EIO; | |
92 | } | |
bb8d8a6f | 93 | |
b1e71b06 | 94 | extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, |
3ce37b2c AG |
95 | u64 no_addr, u64 no_formal_ino, |
96 | unsigned int blktype); | |
044b9414 SW |
97 | extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, |
98 | u64 *no_formal_ino, | |
99 | unsigned int blktype); | |
b1e71b06 SW |
100 | |
101 | extern int gfs2_inode_refresh(struct gfs2_inode *ip); | |
102 | ||
b1e71b06 SW |
103 | extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, |
104 | int is_root); | |
10556cb2 | 105 | extern int gfs2_permission(struct inode *inode, int mask); |
ab9bbda0 | 106 | extern int gfs2_setattr_simple(struct inode *inode, struct iattr *attr); |
b1e71b06 SW |
107 | extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name); |
108 | extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf); | |
6d4ade98 | 109 | extern int gfs2_open_common(struct inode *inode, struct file *file); |
3a27411c AG |
110 | extern loff_t gfs2_seek_data(struct file *file, loff_t offset); |
111 | extern loff_t gfs2_seek_hole(struct file *file, loff_t offset); | |
b3b94faa | 112 | |
b2760583 SW |
113 | extern const struct inode_operations gfs2_file_iops; |
114 | extern const struct inode_operations gfs2_dir_iops; | |
115 | extern const struct inode_operations gfs2_symlink_iops; | |
10d21988 CH |
116 | extern const struct file_operations gfs2_file_fops_nolock; |
117 | extern const struct file_operations gfs2_dir_fops_nolock; | |
b2760583 SW |
118 | |
119 | extern void gfs2_set_inode_flags(struct inode *inode); | |
f057f6cd SW |
120 | |
121 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM | |
10d21988 CH |
122 | extern const struct file_operations gfs2_file_fops; |
123 | extern const struct file_operations gfs2_dir_fops; | |
124 | ||
f057f6cd SW |
125 | static inline int gfs2_localflocks(const struct gfs2_sbd *sdp) |
126 | { | |
127 | return sdp->sd_args.ar_localflocks; | |
128 | } | |
129 | #else /* Single node only */ | |
10d21988 CH |
130 | #define gfs2_file_fops gfs2_file_fops_nolock |
131 | #define gfs2_dir_fops gfs2_dir_fops_nolock | |
132 | ||
f057f6cd SW |
133 | static inline int gfs2_localflocks(const struct gfs2_sbd *sdp) |
134 | { | |
135 | return 1; | |
136 | } | |
137 | #endif /* CONFIG_GFS2_FS_LOCKING_DLM */ | |
b2760583 | 138 | |
b3b94faa DT |
139 | #endif /* __INODE_DOT_H__ */ |
140 |