1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4*4882a593Smuzhiyun * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #ifndef __INODE_DOT_H__
8*4882a593Smuzhiyun #define __INODE_DOT_H__
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/fs.h>
11*4882a593Smuzhiyun #include <linux/buffer_head.h>
12*4882a593Smuzhiyun #include <linux/mm.h>
13*4882a593Smuzhiyun #include "util.h"
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
16*4882a593Smuzhiyun extern int gfs2_internal_read(struct gfs2_inode *ip,
17*4882a593Smuzhiyun char *buf, loff_t *pos, unsigned size);
18*4882a593Smuzhiyun extern void gfs2_set_aops(struct inode *inode);
19*4882a593Smuzhiyun
gfs2_is_stuffed(const struct gfs2_inode * ip)20*4882a593Smuzhiyun static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun return !ip->i_height;
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun
gfs2_is_jdata(const struct gfs2_inode * ip)25*4882a593Smuzhiyun static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun return ip->i_diskflags & GFS2_DIF_JDATA;
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun
gfs2_is_ordered(const struct gfs2_sbd * sdp)30*4882a593Smuzhiyun static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun return sdp->sd_args.ar_data == GFS2_DATA_ORDERED;
33*4882a593Smuzhiyun }
34*4882a593Smuzhiyun
gfs2_is_writeback(const struct gfs2_sbd * sdp)35*4882a593Smuzhiyun static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp)
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK;
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun
gfs2_is_dir(const struct gfs2_inode * ip)40*4882a593Smuzhiyun static inline int gfs2_is_dir(const struct gfs2_inode *ip)
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun return S_ISDIR(ip->i_inode.i_mode);
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
gfs2_set_inode_blocks(struct inode * inode,u64 blocks)45*4882a593Smuzhiyun static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
46*4882a593Smuzhiyun {
47*4882a593Smuzhiyun inode->i_blocks = blocks <<
48*4882a593Smuzhiyun (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
gfs2_get_inode_blocks(const struct inode * inode)51*4882a593Smuzhiyun static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun return inode->i_blocks >>
54*4882a593Smuzhiyun (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun
gfs2_add_inode_blocks(struct inode * inode,s64 change)57*4882a593Smuzhiyun static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
58*4882a593Smuzhiyun {
59*4882a593Smuzhiyun change <<= inode->i_blkbits - GFS2_BASIC_BLOCK_SHIFT;
60*4882a593Smuzhiyun gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change));
61*4882a593Smuzhiyun inode->i_blocks += change;
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
gfs2_check_inum(const struct gfs2_inode * ip,u64 no_addr,u64 no_formal_ino)64*4882a593Smuzhiyun static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
65*4882a593Smuzhiyun u64 no_formal_ino)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
gfs2_inum_out(const struct gfs2_inode * ip,struct gfs2_dirent * dent)70*4882a593Smuzhiyun static inline void gfs2_inum_out(const struct gfs2_inode *ip,
71*4882a593Smuzhiyun struct gfs2_dirent *dent)
72*4882a593Smuzhiyun {
73*4882a593Smuzhiyun dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
74*4882a593Smuzhiyun dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
gfs2_check_internal_file_size(struct inode * inode,u64 minsize,u64 maxsize)77*4882a593Smuzhiyun static inline int gfs2_check_internal_file_size(struct inode *inode,
78*4882a593Smuzhiyun u64 minsize, u64 maxsize)
79*4882a593Smuzhiyun {
80*4882a593Smuzhiyun u64 size = i_size_read(inode);
81*4882a593Smuzhiyun if (size < minsize || size > maxsize)
82*4882a593Smuzhiyun goto err;
83*4882a593Smuzhiyun if (size & (BIT(inode->i_blkbits) - 1))
84*4882a593Smuzhiyun goto err;
85*4882a593Smuzhiyun return 0;
86*4882a593Smuzhiyun err:
87*4882a593Smuzhiyun gfs2_consist_inode(GFS2_I(inode));
88*4882a593Smuzhiyun return -EIO;
89*4882a593Smuzhiyun }
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
92*4882a593Smuzhiyun u64 no_addr, u64 no_formal_ino,
93*4882a593Smuzhiyun unsigned int blktype);
94*4882a593Smuzhiyun extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
95*4882a593Smuzhiyun u64 no_formal_ino,
96*4882a593Smuzhiyun unsigned int blktype);
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun extern int gfs2_inode_refresh(struct gfs2_inode *ip);
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
101*4882a593Smuzhiyun int is_root);
102*4882a593Smuzhiyun extern int gfs2_permission(struct inode *inode, int mask);
103*4882a593Smuzhiyun extern int gfs2_setattr_simple(struct inode *inode, struct iattr *attr);
104*4882a593Smuzhiyun extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
105*4882a593Smuzhiyun extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
106*4882a593Smuzhiyun extern int gfs2_open_common(struct inode *inode, struct file *file);
107*4882a593Smuzhiyun extern loff_t gfs2_seek_data(struct file *file, loff_t offset);
108*4882a593Smuzhiyun extern loff_t gfs2_seek_hole(struct file *file, loff_t offset);
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun extern const struct inode_operations gfs2_file_iops;
111*4882a593Smuzhiyun extern const struct inode_operations gfs2_dir_iops;
112*4882a593Smuzhiyun extern const struct inode_operations gfs2_symlink_iops;
113*4882a593Smuzhiyun extern const struct file_operations gfs2_file_fops_nolock;
114*4882a593Smuzhiyun extern const struct file_operations gfs2_dir_fops_nolock;
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun extern void gfs2_set_inode_flags(struct inode *inode);
117*4882a593Smuzhiyun
118*4882a593Smuzhiyun #ifdef CONFIG_GFS2_FS_LOCKING_DLM
119*4882a593Smuzhiyun extern const struct file_operations gfs2_file_fops;
120*4882a593Smuzhiyun extern const struct file_operations gfs2_dir_fops;
121*4882a593Smuzhiyun
gfs2_localflocks(const struct gfs2_sbd * sdp)122*4882a593Smuzhiyun static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
123*4882a593Smuzhiyun {
124*4882a593Smuzhiyun return sdp->sd_args.ar_localflocks;
125*4882a593Smuzhiyun }
126*4882a593Smuzhiyun #else /* Single node only */
127*4882a593Smuzhiyun #define gfs2_file_fops gfs2_file_fops_nolock
128*4882a593Smuzhiyun #define gfs2_dir_fops gfs2_dir_fops_nolock
129*4882a593Smuzhiyun
gfs2_localflocks(const struct gfs2_sbd * sdp)130*4882a593Smuzhiyun static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
131*4882a593Smuzhiyun {
132*4882a593Smuzhiyun return 1;
133*4882a593Smuzhiyun }
134*4882a593Smuzhiyun #endif /* CONFIG_GFS2_FS_LOCKING_DLM */
135*4882a593Smuzhiyun
136*4882a593Smuzhiyun #endif /* __INODE_DOT_H__ */
137*4882a593Smuzhiyun
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