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David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -04003 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
10#ifndef __INODE_DOT_H__
11#define __INODE_DOT_H__
12
Steven Whitehouseb2760582008-10-14 16:05:55 +010013#include <linux/fs.h>
Steven Whitehouseb1e71b02009-05-22 10:01:55 +010014#include <linux/buffer_head.h>
15#include <linux/mm.h>
Steven Whitehouse77658aa2008-02-12 14:17:27 +000016#include "util.h"
17
Steven Whitehouseb1e71b02009-05-22 10:01:55 +010018extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
19extern int gfs2_internal_read(struct gfs2_inode *ip,
Steven Whitehouseb1e71b02009-05-22 10:01:55 +010020 char *buf, loff_t *pos, unsigned size);
21extern void gfs2_set_aops(struct inode *inode);
22
Steven Whitehousedbb7cae2007-05-15 15:37:50 +010023static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
David Teiglandb3b94fa2006-01-16 16:50:04 +000024{
Steven Whitehouseecc30c72008-01-28 10:37:35 +000025 return !ip->i_height;
David Teiglandb3b94fa2006-01-16 16:50:04 +000026}
27
Steven Whitehousedbb7cae2007-05-15 15:37:50 +010028static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
David Teiglandb3b94fa2006-01-16 16:50:04 +000029{
Steven Whitehouse383f01f2008-11-04 10:05:22 +000030 return ip->i_diskflags & GFS2_DIF_JDATA;
David Teiglandb3b94fa2006-01-16 16:50:04 +000031}
32
Steven Whitehousebf36a712007-10-17 08:35:19 +010033static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
34{
35 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
36 return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
37}
38
Steven Whitehouse55610932007-10-17 08:47:38 +010039static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
40{
41 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
42 return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
43}
44
Steven Whitehousedbb7cae2007-05-15 15:37:50 +010045static inline int gfs2_is_dir(const struct gfs2_inode *ip)
Steven Whitehouse18ec7d52006-02-08 11:50:51 +000046{
Steven Whitehouseb60623c2006-11-01 12:22:46 -050047 return S_ISDIR(ip->i_inode.i_mode);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +000048}
49
Steven Whitehouse77658aa2008-02-12 14:17:27 +000050static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
Steven Whitehouse9e2dbda2006-11-08 15:45:46 -050051{
Steven Whitehouse77658aa2008-02-12 14:17:27 +000052 inode->i_blocks = blocks <<
Steven Whitehouse9e2dbda2006-11-08 15:45:46 -050053 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
54}
55
Steven Whitehouse77658aa2008-02-12 14:17:27 +000056static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
57{
58 return inode->i_blocks >>
59 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
60}
61
62static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
63{
64 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change));
65 change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
66 inode->i_blocks += change;
67}
68
Steven Whitehousedbb7cae2007-05-15 15:37:50 +010069static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
70 u64 no_formal_ino)
71{
72 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
73}
74
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010075static inline void gfs2_inum_out(const struct gfs2_inode *ip,
76 struct gfs2_dirent *dent)
77{
78 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
79 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
80}
81
Steven Whitehousea2e0f792010-08-11 09:53:11 +010082static inline int gfs2_check_internal_file_size(struct inode *inode,
83 u64 minsize, u64 maxsize)
84{
85 u64 size = i_size_read(inode);
86 if (size < minsize || size > maxsize)
87 goto err;
88 if (size & ((1 << inode->i_blkbits) - 1))
89 goto err;
90 return 0;
91err:
92 gfs2_consist_inode(GFS2_I(inode));
93 return -EIO;
94}
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010095
Steven Whitehouseb1e71b02009-05-22 10:01:55 +010096extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
Bob Peterson44ad37d2011-03-17 16:19:58 -040097 u64 no_addr, u64 no_formal_ino,
98 int non_block);
Steven Whitehouse044b9412010-11-03 20:01:07 +000099extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
100 u64 *no_formal_ino,
101 unsigned int blktype);
Steven Whitehouse4667a0e2011-04-18 14:18:09 +0100102extern struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr, int nonblock);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000103
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100104extern int gfs2_inode_refresh(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000105
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100106extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
107 int is_root);
Al Viro10556cb2011-06-20 19:28:19 -0400108extern int gfs2_permission(struct inode *inode, int mask);
Steven Whitehouseab9bbda2011-08-15 14:20:36 +0100109extern int gfs2_setattr_simple(struct inode *inode, struct iattr *attr);
Steven Whitehouseb1e71b02009-05-22 10:01:55 +0100110extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
111extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
Steven Whitehouse6d4ade92013-06-14 11:17:15 +0100112extern int gfs2_open_common(struct inode *inode, struct file *file);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000113
Steven Whitehouseb2760582008-10-14 16:05:55 +0100114extern const struct inode_operations gfs2_file_iops;
115extern const struct inode_operations gfs2_dir_iops;
116extern const struct inode_operations gfs2_symlink_iops;
Christoph Hellwig10d21982009-04-07 19:42:17 +0200117extern const struct file_operations gfs2_file_fops_nolock;
118extern const struct file_operations gfs2_dir_fops_nolock;
Steven Whitehouseb2760582008-10-14 16:05:55 +0100119
120extern void gfs2_set_inode_flags(struct inode *inode);
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000121
122#ifdef CONFIG_GFS2_FS_LOCKING_DLM
Christoph Hellwig10d21982009-04-07 19:42:17 +0200123extern const struct file_operations gfs2_file_fops;
124extern const struct file_operations gfs2_dir_fops;
125
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000126static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
127{
128 return sdp->sd_args.ar_localflocks;
129}
130#else /* Single node only */
Christoph Hellwig10d21982009-04-07 19:42:17 +0200131#define gfs2_file_fops gfs2_file_fops_nolock
132#define gfs2_dir_fops gfs2_dir_fops_nolock
133
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000134static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
135{
136 return 1;
137}
138#endif /* CONFIG_GFS2_FS_LOCKING_DLM */
Steven Whitehouseb2760582008-10-14 16:05:55 +0100139
David Teiglandb3b94fa2006-01-16 16:50:04 +0000140#endif /* __INODE_DOT_H__ */
141