David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #ifndef __INODE_DOT_H__ |
| 11 | #define __INODE_DOT_H__ |
| 12 | |
Steven Whitehouse | b276058 | 2008-10-14 16:05:55 +0100 | [diff] [blame] | 13 | #include <linux/fs.h> |
Steven Whitehouse | b1e71b0 | 2009-05-22 10:01:55 +0100 | [diff] [blame] | 14 | #include <linux/buffer_head.h> |
| 15 | #include <linux/mm.h> |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 16 | #include "util.h" |
| 17 | |
Steven Whitehouse | b1e71b0 | 2009-05-22 10:01:55 +0100 | [diff] [blame] | 18 | extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask); |
| 19 | extern int gfs2_internal_read(struct gfs2_inode *ip, |
Steven Whitehouse | b1e71b0 | 2009-05-22 10:01:55 +0100 | [diff] [blame] | 20 | char *buf, loff_t *pos, unsigned size); |
| 21 | extern void gfs2_set_aops(struct inode *inode); |
| 22 | |
Steven Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 23 | static inline int gfs2_is_stuffed(const struct gfs2_inode *ip) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 24 | { |
Steven Whitehouse | ecc30c7 | 2008-01-28 10:37:35 +0000 | [diff] [blame] | 25 | return !ip->i_height; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 26 | } |
| 27 | |
Steven Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 28 | static inline int gfs2_is_jdata(const struct gfs2_inode *ip) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 29 | { |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 30 | return ip->i_diskflags & GFS2_DIF_JDATA; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 31 | } |
| 32 | |
Steven Whitehouse | bf36a71 | 2007-10-17 08:35:19 +0100 | [diff] [blame] | 33 | static 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 Whitehouse | 5561093 | 2007-10-17 08:47:38 +0100 | [diff] [blame] | 39 | static 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 Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 45 | static inline int gfs2_is_dir(const struct gfs2_inode *ip) |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 46 | { |
Steven Whitehouse | b60623c | 2006-11-01 12:22:46 -0500 | [diff] [blame] | 47 | return S_ISDIR(ip->i_inode.i_mode); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 48 | } |
| 49 | |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 50 | static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks) |
Steven Whitehouse | 9e2dbda | 2006-11-08 15:45:46 -0500 | [diff] [blame] | 51 | { |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 52 | inode->i_blocks = blocks << |
Steven Whitehouse | 9e2dbda | 2006-11-08 15:45:46 -0500 | [diff] [blame] | 53 | (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); |
| 54 | } |
| 55 | |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 56 | static 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 | |
| 62 | static 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 Whitehouse | dbb7cae | 2007-05-15 15:37:50 +0100 | [diff] [blame] | 69 | static 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 Whitehouse | bb8d8a6 | 2007-06-01 14:11:58 +0100 | [diff] [blame] | 75 | static 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 Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 82 | static 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; |
| 91 | err: |
| 92 | gfs2_consist_inode(GFS2_I(inode)); |
| 93 | return -EIO; |
| 94 | } |
Steven Whitehouse | bb8d8a6 | 2007-06-01 14:11:58 +0100 | [diff] [blame] | 95 | |
Steven Whitehouse | b1e71b0 | 2009-05-22 10:01:55 +0100 | [diff] [blame] | 96 | extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, |
Bob Peterson | 73b462d | 2015-12-18 11:44:49 -0600 | [diff] [blame^] | 97 | u64 no_addr, u64 no_formal_ino); |
Steven Whitehouse | 044b941 | 2010-11-03 20:01:07 +0000 | [diff] [blame] | 98 | extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, |
| 99 | u64 *no_formal_ino, |
| 100 | unsigned int blktype); |
Bob Peterson | ff34245 | 2015-03-27 08:25:41 -0500 | [diff] [blame] | 101 | extern struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 102 | |
Steven Whitehouse | b1e71b0 | 2009-05-22 10:01:55 +0100 | [diff] [blame] | 103 | extern int gfs2_inode_refresh(struct gfs2_inode *ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 104 | |
Steven Whitehouse | b1e71b0 | 2009-05-22 10:01:55 +0100 | [diff] [blame] | 105 | extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, |
| 106 | int is_root); |
Al Viro | 10556cb | 2011-06-20 19:28:19 -0400 | [diff] [blame] | 107 | extern int gfs2_permission(struct inode *inode, int mask); |
Steven Whitehouse | ab9bbda | 2011-08-15 14:20:36 +0100 | [diff] [blame] | 108 | extern int gfs2_setattr_simple(struct inode *inode, struct iattr *attr); |
Steven Whitehouse | b1e71b0 | 2009-05-22 10:01:55 +0100 | [diff] [blame] | 109 | extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name); |
| 110 | extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf); |
Steven Whitehouse | 6d4ade9 | 2013-06-14 11:17:15 +0100 | [diff] [blame] | 111 | extern int gfs2_open_common(struct inode *inode, struct file *file); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 112 | |
Steven Whitehouse | b276058 | 2008-10-14 16:05:55 +0100 | [diff] [blame] | 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; |
Christoph Hellwig | 10d2198 | 2009-04-07 19:42:17 +0200 | [diff] [blame] | 116 | extern const struct file_operations gfs2_file_fops_nolock; |
| 117 | extern const struct file_operations gfs2_dir_fops_nolock; |
Steven Whitehouse | b276058 | 2008-10-14 16:05:55 +0100 | [diff] [blame] | 118 | |
| 119 | extern void gfs2_set_inode_flags(struct inode *inode); |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 120 | |
| 121 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
Christoph Hellwig | 10d2198 | 2009-04-07 19:42:17 +0200 | [diff] [blame] | 122 | extern const struct file_operations gfs2_file_fops; |
| 123 | extern const struct file_operations gfs2_dir_fops; |
| 124 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 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 */ |
Christoph Hellwig | 10d2198 | 2009-04-07 19:42:17 +0200 | [diff] [blame] | 130 | #define gfs2_file_fops gfs2_file_fops_nolock |
| 131 | #define gfs2_dir_fops gfs2_dir_fops_nolock |
| 132 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 133 | static inline int gfs2_localflocks(const struct gfs2_sbd *sdp) |
| 134 | { |
| 135 | return 1; |
| 136 | } |
| 137 | #endif /* CONFIG_GFS2_FS_LOCKING_DLM */ |
Steven Whitehouse | b276058 | 2008-10-14 16:05:55 +0100 | [diff] [blame] | 138 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 139 | #endif /* __INODE_DOT_H__ */ |
| 140 | |