1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 */
6
7 #ifndef __INODE_DOT_H__
8 #define __INODE_DOT_H__
9
10 #include <linux/fs.h>
11 #include <linux/buffer_head.h>
12 #include <linux/mm.h>
13 #include "util.h"
14
15 bool gfs2_release_folio(struct folio *folio, gfp_t gfp_mask);
16 ssize_t gfs2_internal_read(struct gfs2_inode *ip,
17 char *buf, loff_t *pos, size_t size);
18 void gfs2_set_aops(struct inode *inode);
19
gfs2_is_stuffed(const struct gfs2_inode * ip)20 static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
21 {
22 return !ip->i_height;
23 }
24
gfs2_is_jdata(const struct gfs2_inode * ip)25 static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
26 {
27 return ip->i_diskflags & GFS2_DIF_JDATA;
28 }
29
gfs2_is_ordered(const struct gfs2_sbd * sdp)30 static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp)
31 {
32 return sdp->sd_args.ar_data == GFS2_DATA_ORDERED;
33 }
34
gfs2_is_writeback(const struct gfs2_sbd * sdp)35 static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp)
36 {
37 return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK;
38 }
39
gfs2_is_dir(const struct gfs2_inode * ip)40 static inline int gfs2_is_dir(const struct gfs2_inode *ip)
41 {
42 return S_ISDIR(ip->i_inode.i_mode);
43 }
44
gfs2_set_inode_blocks(struct inode * inode,u64 blocks)45 static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
46 {
47 inode->i_blocks = blocks <<
48 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
49 }
50
gfs2_get_inode_blocks(const struct inode * inode)51 static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
52 {
53 return inode->i_blocks >>
54 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
55 }
56
gfs2_add_inode_blocks(struct inode * inode,s64 change)57 static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
58 {
59 change <<= inode->i_blkbits - GFS2_BASIC_BLOCK_SHIFT;
60 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change));
61 inode->i_blocks += change;
62 }
63
gfs2_check_inum(const struct gfs2_inode * ip,u64 no_addr,u64 no_formal_ino)64 static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
65 u64 no_formal_ino)
66 {
67 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
68 }
69
gfs2_inum_out(const struct gfs2_inode * ip,struct gfs2_dirent * dent)70 static inline void gfs2_inum_out(const struct gfs2_inode *ip,
71 struct gfs2_dirent *dent)
72 {
73 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
74 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
75 }
76
gfs2_check_internal_file_size(struct inode * inode,u64 minsize,u64 maxsize)77 static inline int gfs2_check_internal_file_size(struct inode *inode,
78 u64 minsize, u64 maxsize)
79 {
80 u64 size = i_size_read(inode);
81 if (size < minsize || size > maxsize)
82 goto err;
83 if (size & (BIT(inode->i_blkbits) - 1))
84 goto err;
85 return 0;
86 err:
87 gfs2_consist_inode(GFS2_I(inode));
88 return -EIO;
89 }
90
91 struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
92 u64 no_addr, u64 no_formal_ino,
93 unsigned int blktype);
94 struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
95 u64 no_formal_ino,
96 unsigned int blktype);
97
98 int gfs2_inode_refresh(struct gfs2_inode *ip);
99
100 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
101 int is_root);
102 int gfs2_permission(struct mnt_idmap *idmap,
103 struct inode *inode, int mask);
104 struct inode *gfs2_lookup_meta(struct inode *dip, const char *name);
105 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
106 int gfs2_open_common(struct inode *inode, struct file *file);
107 loff_t gfs2_seek_data(struct file *file, loff_t offset);
108 loff_t gfs2_seek_hole(struct file *file, loff_t offset);
109
110 extern const struct file_operations gfs2_file_fops_nolock;
111 extern const struct file_operations gfs2_dir_fops_nolock;
112
113 int gfs2_fileattr_get(struct dentry *dentry, struct fileattr *fa);
114 int gfs2_fileattr_set(struct mnt_idmap *idmap,
115 struct dentry *dentry, struct fileattr *fa);
116 void gfs2_set_inode_flags(struct inode *inode);
117
118 #ifdef CONFIG_GFS2_FS_LOCKING_DLM
119 extern const struct file_operations gfs2_file_fops;
120 extern const struct file_operations gfs2_dir_fops;
121
gfs2_localflocks(const struct gfs2_sbd * sdp)122 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
123 {
124 return sdp->sd_args.ar_localflocks;
125 }
126 #else /* Single node only */
127 #define gfs2_file_fops gfs2_file_fops_nolock
128 #define gfs2_dir_fops gfs2_dir_fops_nolock
129
gfs2_localflocks(const struct gfs2_sbd * sdp)130 static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
131 {
132 return 1;
133 }
134 #endif /* CONFIG_GFS2_FS_LOCKING_DLM */
135
136 #endif /* __INODE_DOT_H__ */
137
138