Commit 4613ad180d19082f99551477dcb13cb23d23661b
1 parent
f7699f2b01
Exists in
smarc-l5.0.0_1.0.0-ga
and in
5 other branches
ext3: move headers to fs/ext3/
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Showing 24 changed files with 1344 additions and 1575 deletions Side-by-side Diff
- fs/ext3/acl.c
- fs/ext3/balloc.c
- fs/ext3/bitmap.c
- fs/ext3/dir.c
- fs/ext3/ext3.h
- fs/ext3/ext3_jbd.c
- fs/ext3/file.c
- fs/ext3/fsync.c
- fs/ext3/hash.c
- fs/ext3/ialloc.c
- fs/ext3/inode.c
- fs/ext3/ioctl.c
- fs/ext3/namei.c
- fs/ext3/resize.c
- fs/ext3/super.c
- fs/ext3/symlink.c
- fs/ext3/xattr.c
- fs/ext3/xattr_security.c
- fs/ext3/xattr_trusted.c
- fs/ext3/xattr_user.c
- include/linux/ext3_fs.h
- include/linux/ext3_fs_i.h
- include/linux/ext3_fs_sb.h
- include/linux/ext3_jbd.h
fs/ext3/acl.c
... | ... | @@ -4,13 +4,7 @@ |
4 | 4 | * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de> |
5 | 5 | */ |
6 | 6 | |
7 | -#include <linux/init.h> | |
8 | -#include <linux/sched.h> | |
9 | -#include <linux/slab.h> | |
10 | -#include <linux/capability.h> | |
11 | -#include <linux/fs.h> | |
12 | -#include <linux/ext3_jbd.h> | |
13 | -#include <linux/ext3_fs.h> | |
7 | +#include "ext3.h" | |
14 | 8 | #include "xattr.h" |
15 | 9 | #include "acl.h" |
16 | 10 |
fs/ext3/balloc.c
... | ... | @@ -11,17 +11,9 @@ |
11 | 11 | * David S. Miller (davem@caip.rutgers.edu), 1995 |
12 | 12 | */ |
13 | 13 | |
14 | -#include <linux/time.h> | |
15 | -#include <linux/capability.h> | |
16 | -#include <linux/fs.h> | |
17 | -#include <linux/slab.h> | |
18 | -#include <linux/jbd.h> | |
19 | -#include <linux/ext3_fs.h> | |
20 | -#include <linux/ext3_jbd.h> | |
21 | 14 | #include <linux/quotaops.h> |
22 | -#include <linux/buffer_head.h> | |
23 | 15 | #include <linux/blkdev.h> |
24 | -#include <trace/events/ext3.h> | |
16 | +#include "ext3.h" | |
25 | 17 | |
26 | 18 | /* |
27 | 19 | * balloc.c contains the blocks allocation and deallocation routines |
fs/ext3/bitmap.c
fs/ext3/dir.c
... | ... | @@ -21,12 +21,7 @@ |
21 | 21 | * |
22 | 22 | */ |
23 | 23 | |
24 | -#include <linux/fs.h> | |
25 | -#include <linux/jbd.h> | |
26 | -#include <linux/ext3_fs.h> | |
27 | -#include <linux/buffer_head.h> | |
28 | -#include <linux/slab.h> | |
29 | -#include <linux/rbtree.h> | |
24 | +#include "ext3.h" | |
30 | 25 | |
31 | 26 | static unsigned char ext3_filetype_table[] = { |
32 | 27 | DT_UNKNOWN, DT_REG, DT_DIR, DT_CHR, DT_BLK, DT_FIFO, DT_SOCK, DT_LNK |
fs/ext3/ext3.h
Changes suppressed. Click to show
1 | +/* | |
2 | + * Written by Stephen C. Tweedie <sct@redhat.com>, 1999 | |
3 | + * | |
4 | + * Copyright 1998--1999 Red Hat corp --- All Rights Reserved | |
5 | + * | |
6 | + * This file is part of the Linux kernel and is made available under | |
7 | + * the terms of the GNU General Public License, version 2, or at your | |
8 | + * option, any later version, incorporated herein by reference. | |
9 | + * | |
10 | + * Copyright (C) 1992, 1993, 1994, 1995 | |
11 | + * Remy Card (card@masi.ibp.fr) | |
12 | + * Laboratoire MASI - Institut Blaise Pascal | |
13 | + * Universite Pierre et Marie Curie (Paris VI) | |
14 | + * | |
15 | + * from | |
16 | + * | |
17 | + * linux/include/linux/minix_fs.h | |
18 | + * | |
19 | + * Copyright (C) 1991, 1992 Linus Torvalds | |
20 | + */ | |
21 | + | |
22 | +#include <linux/fs.h> | |
23 | +#include <linux/jbd.h> | |
24 | +#include <linux/magic.h> | |
25 | +#include <linux/bug.h> | |
26 | +#include <linux/blockgroup_lock.h> | |
27 | + | |
28 | +/* | |
29 | + * The second extended filesystem constants/structures | |
30 | + */ | |
31 | + | |
32 | +/* | |
33 | + * Define EXT3FS_DEBUG to produce debug messages | |
34 | + */ | |
35 | +#undef EXT3FS_DEBUG | |
36 | + | |
37 | +/* | |
38 | + * Define EXT3_RESERVATION to reserve data blocks for expanding files | |
39 | + */ | |
40 | +#define EXT3_DEFAULT_RESERVE_BLOCKS 8 | |
41 | +/*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */ | |
42 | +#define EXT3_MAX_RESERVE_BLOCKS 1027 | |
43 | +#define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0 | |
44 | + | |
45 | +/* | |
46 | + * Debug code | |
47 | + */ | |
48 | +#ifdef EXT3FS_DEBUG | |
49 | +#define ext3_debug(f, a...) \ | |
50 | + do { \ | |
51 | + printk (KERN_DEBUG "EXT3-fs DEBUG (%s, %d): %s:", \ | |
52 | + __FILE__, __LINE__, __func__); \ | |
53 | + printk (KERN_DEBUG f, ## a); \ | |
54 | + } while (0) | |
55 | +#else | |
56 | +#define ext3_debug(f, a...) do {} while (0) | |
57 | +#endif | |
58 | + | |
59 | +/* | |
60 | + * Special inodes numbers | |
61 | + */ | |
62 | +#define EXT3_BAD_INO 1 /* Bad blocks inode */ | |
63 | +#define EXT3_ROOT_INO 2 /* Root inode */ | |
64 | +#define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */ | |
65 | +#define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */ | |
66 | +#define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */ | |
67 | +#define EXT3_JOURNAL_INO 8 /* Journal inode */ | |
68 | + | |
69 | +/* First non-reserved inode for old ext3 filesystems */ | |
70 | +#define EXT3_GOOD_OLD_FIRST_INO 11 | |
71 | + | |
72 | +/* | |
73 | + * Maximal count of links to a file | |
74 | + */ | |
75 | +#define EXT3_LINK_MAX 32000 | |
76 | + | |
77 | +/* | |
78 | + * Macro-instructions used to manage several block sizes | |
79 | + */ | |
80 | +#define EXT3_MIN_BLOCK_SIZE 1024 | |
81 | +#define EXT3_MAX_BLOCK_SIZE 65536 | |
82 | +#define EXT3_MIN_BLOCK_LOG_SIZE 10 | |
83 | +#define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize) | |
84 | +#define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (__u32)) | |
85 | +#define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits) | |
86 | +#define EXT3_ADDR_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_addr_per_block_bits) | |
87 | +#define EXT3_INODE_SIZE(s) (EXT3_SB(s)->s_inode_size) | |
88 | +#define EXT3_FIRST_INO(s) (EXT3_SB(s)->s_first_ino) | |
89 | + | |
90 | +/* | |
91 | + * Macro-instructions used to manage fragments | |
92 | + */ | |
93 | +#define EXT3_MIN_FRAG_SIZE 1024 | |
94 | +#define EXT3_MAX_FRAG_SIZE 4096 | |
95 | +#define EXT3_MIN_FRAG_LOG_SIZE 10 | |
96 | +#define EXT3_FRAG_SIZE(s) (EXT3_SB(s)->s_frag_size) | |
97 | +#define EXT3_FRAGS_PER_BLOCK(s) (EXT3_SB(s)->s_frags_per_block) | |
98 | + | |
99 | +/* | |
100 | + * Structure of a blocks group descriptor | |
101 | + */ | |
102 | +struct ext3_group_desc | |
103 | +{ | |
104 | + __le32 bg_block_bitmap; /* Blocks bitmap block */ | |
105 | + __le32 bg_inode_bitmap; /* Inodes bitmap block */ | |
106 | + __le32 bg_inode_table; /* Inodes table block */ | |
107 | + __le16 bg_free_blocks_count; /* Free blocks count */ | |
108 | + __le16 bg_free_inodes_count; /* Free inodes count */ | |
109 | + __le16 bg_used_dirs_count; /* Directories count */ | |
110 | + __u16 bg_pad; | |
111 | + __le32 bg_reserved[3]; | |
112 | +}; | |
113 | + | |
114 | +/* | |
115 | + * Macro-instructions used to manage group descriptors | |
116 | + */ | |
117 | +#define EXT3_BLOCKS_PER_GROUP(s) (EXT3_SB(s)->s_blocks_per_group) | |
118 | +#define EXT3_DESC_PER_BLOCK(s) (EXT3_SB(s)->s_desc_per_block) | |
119 | +#define EXT3_INODES_PER_GROUP(s) (EXT3_SB(s)->s_inodes_per_group) | |
120 | +#define EXT3_DESC_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_desc_per_block_bits) | |
121 | + | |
122 | +/* | |
123 | + * Constants relative to the data blocks | |
124 | + */ | |
125 | +#define EXT3_NDIR_BLOCKS 12 | |
126 | +#define EXT3_IND_BLOCK EXT3_NDIR_BLOCKS | |
127 | +#define EXT3_DIND_BLOCK (EXT3_IND_BLOCK + 1) | |
128 | +#define EXT3_TIND_BLOCK (EXT3_DIND_BLOCK + 1) | |
129 | +#define EXT3_N_BLOCKS (EXT3_TIND_BLOCK + 1) | |
130 | + | |
131 | +/* | |
132 | + * Inode flags | |
133 | + */ | |
134 | +#define EXT3_SECRM_FL 0x00000001 /* Secure deletion */ | |
135 | +#define EXT3_UNRM_FL 0x00000002 /* Undelete */ | |
136 | +#define EXT3_COMPR_FL 0x00000004 /* Compress file */ | |
137 | +#define EXT3_SYNC_FL 0x00000008 /* Synchronous updates */ | |
138 | +#define EXT3_IMMUTABLE_FL 0x00000010 /* Immutable file */ | |
139 | +#define EXT3_APPEND_FL 0x00000020 /* writes to file may only append */ | |
140 | +#define EXT3_NODUMP_FL 0x00000040 /* do not dump file */ | |
141 | +#define EXT3_NOATIME_FL 0x00000080 /* do not update atime */ | |
142 | +/* Reserved for compression usage... */ | |
143 | +#define EXT3_DIRTY_FL 0x00000100 | |
144 | +#define EXT3_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ | |
145 | +#define EXT3_NOCOMPR_FL 0x00000400 /* Don't compress */ | |
146 | +#define EXT3_ECOMPR_FL 0x00000800 /* Compression error */ | |
147 | +/* End compression flags --- maybe not all used */ | |
148 | +#define EXT3_INDEX_FL 0x00001000 /* hash-indexed directory */ | |
149 | +#define EXT3_IMAGIC_FL 0x00002000 /* AFS directory */ | |
150 | +#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */ | |
151 | +#define EXT3_NOTAIL_FL 0x00008000 /* file tail should not be merged */ | |
152 | +#define EXT3_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ | |
153 | +#define EXT3_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ | |
154 | +#define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */ | |
155 | + | |
156 | +#define EXT3_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ | |
157 | +#define EXT3_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */ | |
158 | + | |
159 | +/* Flags that should be inherited by new inodes from their parent. */ | |
160 | +#define EXT3_FL_INHERITED (EXT3_SECRM_FL | EXT3_UNRM_FL | EXT3_COMPR_FL |\ | |
161 | + EXT3_SYNC_FL | EXT3_NODUMP_FL |\ | |
162 | + EXT3_NOATIME_FL | EXT3_COMPRBLK_FL |\ | |
163 | + EXT3_NOCOMPR_FL | EXT3_JOURNAL_DATA_FL |\ | |
164 | + EXT3_NOTAIL_FL | EXT3_DIRSYNC_FL) | |
165 | + | |
166 | +/* Flags that are appropriate for regular files (all but dir-specific ones). */ | |
167 | +#define EXT3_REG_FLMASK (~(EXT3_DIRSYNC_FL | EXT3_TOPDIR_FL)) | |
168 | + | |
169 | +/* Flags that are appropriate for non-directories/regular files. */ | |
170 | +#define EXT3_OTHER_FLMASK (EXT3_NODUMP_FL | EXT3_NOATIME_FL) | |
171 | + | |
172 | +/* Mask out flags that are inappropriate for the given type of inode. */ | |
173 | +static inline __u32 ext3_mask_flags(umode_t mode, __u32 flags) | |
174 | +{ | |
175 | + if (S_ISDIR(mode)) | |
176 | + return flags; | |
177 | + else if (S_ISREG(mode)) | |
178 | + return flags & EXT3_REG_FLMASK; | |
179 | + else | |
180 | + return flags & EXT3_OTHER_FLMASK; | |
181 | +} | |
182 | + | |
183 | +/* Used to pass group descriptor data when online resize is done */ | |
184 | +struct ext3_new_group_input { | |
185 | + __u32 group; /* Group number for this data */ | |
186 | + __u32 block_bitmap; /* Absolute block number of block bitmap */ | |
187 | + __u32 inode_bitmap; /* Absolute block number of inode bitmap */ | |
188 | + __u32 inode_table; /* Absolute block number of inode table start */ | |
189 | + __u32 blocks_count; /* Total number of blocks in this group */ | |
190 | + __u16 reserved_blocks; /* Number of reserved blocks in this group */ | |
191 | + __u16 unused; | |
192 | +}; | |
193 | + | |
194 | +/* The struct ext3_new_group_input in kernel space, with free_blocks_count */ | |
195 | +struct ext3_new_group_data { | |
196 | + __u32 group; | |
197 | + __u32 block_bitmap; | |
198 | + __u32 inode_bitmap; | |
199 | + __u32 inode_table; | |
200 | + __u32 blocks_count; | |
201 | + __u16 reserved_blocks; | |
202 | + __u16 unused; | |
203 | + __u32 free_blocks_count; | |
204 | +}; | |
205 | + | |
206 | + | |
207 | +/* | |
208 | + * ioctl commands | |
209 | + */ | |
210 | +#define EXT3_IOC_GETFLAGS FS_IOC_GETFLAGS | |
211 | +#define EXT3_IOC_SETFLAGS FS_IOC_SETFLAGS | |
212 | +#define EXT3_IOC_GETVERSION _IOR('f', 3, long) | |
213 | +#define EXT3_IOC_SETVERSION _IOW('f', 4, long) | |
214 | +#define EXT3_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) | |
215 | +#define EXT3_IOC_GROUP_ADD _IOW('f', 8,struct ext3_new_group_input) | |
216 | +#define EXT3_IOC_GETVERSION_OLD FS_IOC_GETVERSION | |
217 | +#define EXT3_IOC_SETVERSION_OLD FS_IOC_SETVERSION | |
218 | +#ifdef CONFIG_JBD_DEBUG | |
219 | +#define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long) | |
220 | +#endif | |
221 | +#define EXT3_IOC_GETRSVSZ _IOR('f', 5, long) | |
222 | +#define EXT3_IOC_SETRSVSZ _IOW('f', 6, long) | |
223 | + | |
224 | +/* | |
225 | + * ioctl commands in 32 bit emulation | |
226 | + */ | |
227 | +#define EXT3_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
228 | +#define EXT3_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
229 | +#define EXT3_IOC32_GETVERSION _IOR('f', 3, int) | |
230 | +#define EXT3_IOC32_SETVERSION _IOW('f', 4, int) | |
231 | +#define EXT3_IOC32_GETRSVSZ _IOR('f', 5, int) | |
232 | +#define EXT3_IOC32_SETRSVSZ _IOW('f', 6, int) | |
233 | +#define EXT3_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int) | |
234 | +#ifdef CONFIG_JBD_DEBUG | |
235 | +#define EXT3_IOC32_WAIT_FOR_READONLY _IOR('f', 99, int) | |
236 | +#endif | |
237 | +#define EXT3_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION | |
238 | +#define EXT3_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION | |
239 | + | |
240 | + | |
241 | +/* | |
242 | + * Mount options | |
243 | + */ | |
244 | +struct ext3_mount_options { | |
245 | + unsigned long s_mount_opt; | |
246 | + uid_t s_resuid; | |
247 | + gid_t s_resgid; | |
248 | + unsigned long s_commit_interval; | |
249 | +#ifdef CONFIG_QUOTA | |
250 | + int s_jquota_fmt; | |
251 | + char *s_qf_names[MAXQUOTAS]; | |
252 | +#endif | |
253 | +}; | |
254 | + | |
255 | +/* | |
256 | + * Structure of an inode on the disk | |
257 | + */ | |
258 | +struct ext3_inode { | |
259 | + __le16 i_mode; /* File mode */ | |
260 | + __le16 i_uid; /* Low 16 bits of Owner Uid */ | |
261 | + __le32 i_size; /* Size in bytes */ | |
262 | + __le32 i_atime; /* Access time */ | |
263 | + __le32 i_ctime; /* Creation time */ | |
264 | + __le32 i_mtime; /* Modification time */ | |
265 | + __le32 i_dtime; /* Deletion Time */ | |
266 | + __le16 i_gid; /* Low 16 bits of Group Id */ | |
267 | + __le16 i_links_count; /* Links count */ | |
268 | + __le32 i_blocks; /* Blocks count */ | |
269 | + __le32 i_flags; /* File flags */ | |
270 | + union { | |
271 | + struct { | |
272 | + __u32 l_i_reserved1; | |
273 | + } linux1; | |
274 | + struct { | |
275 | + __u32 h_i_translator; | |
276 | + } hurd1; | |
277 | + struct { | |
278 | + __u32 m_i_reserved1; | |
279 | + } masix1; | |
280 | + } osd1; /* OS dependent 1 */ | |
281 | + __le32 i_block[EXT3_N_BLOCKS];/* Pointers to blocks */ | |
282 | + __le32 i_generation; /* File version (for NFS) */ | |
283 | + __le32 i_file_acl; /* File ACL */ | |
284 | + __le32 i_dir_acl; /* Directory ACL */ | |
285 | + __le32 i_faddr; /* Fragment address */ | |
286 | + union { | |
287 | + struct { | |
288 | + __u8 l_i_frag; /* Fragment number */ | |
289 | + __u8 l_i_fsize; /* Fragment size */ | |
290 | + __u16 i_pad1; | |
291 | + __le16 l_i_uid_high; /* these 2 fields */ | |
292 | + __le16 l_i_gid_high; /* were reserved2[0] */ | |
293 | + __u32 l_i_reserved2; | |
294 | + } linux2; | |
295 | + struct { | |
296 | + __u8 h_i_frag; /* Fragment number */ | |
297 | + __u8 h_i_fsize; /* Fragment size */ | |
298 | + __u16 h_i_mode_high; | |
299 | + __u16 h_i_uid_high; | |
300 | + __u16 h_i_gid_high; | |
301 | + __u32 h_i_author; | |
302 | + } hurd2; | |
303 | + struct { | |
304 | + __u8 m_i_frag; /* Fragment number */ | |
305 | + __u8 m_i_fsize; /* Fragment size */ | |
306 | + __u16 m_pad1; | |
307 | + __u32 m_i_reserved2[2]; | |
308 | + } masix2; | |
309 | + } osd2; /* OS dependent 2 */ | |
310 | + __le16 i_extra_isize; | |
311 | + __le16 i_pad1; | |
312 | +}; | |
313 | + | |
314 | +#define i_size_high i_dir_acl | |
315 | + | |
316 | +#define i_reserved1 osd1.linux1.l_i_reserved1 | |
317 | +#define i_frag osd2.linux2.l_i_frag | |
318 | +#define i_fsize osd2.linux2.l_i_fsize | |
319 | +#define i_uid_low i_uid | |
320 | +#define i_gid_low i_gid | |
321 | +#define i_uid_high osd2.linux2.l_i_uid_high | |
322 | +#define i_gid_high osd2.linux2.l_i_gid_high | |
323 | +#define i_reserved2 osd2.linux2.l_i_reserved2 | |
324 | + | |
325 | +/* | |
326 | + * File system states | |
327 | + */ | |
328 | +#define EXT3_VALID_FS 0x0001 /* Unmounted cleanly */ | |
329 | +#define EXT3_ERROR_FS 0x0002 /* Errors detected */ | |
330 | +#define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */ | |
331 | + | |
332 | +/* | |
333 | + * Misc. filesystem flags | |
334 | + */ | |
335 | +#define EXT2_FLAGS_SIGNED_HASH 0x0001 /* Signed dirhash in use */ | |
336 | +#define EXT2_FLAGS_UNSIGNED_HASH 0x0002 /* Unsigned dirhash in use */ | |
337 | +#define EXT2_FLAGS_TEST_FILESYS 0x0004 /* to test development code */ | |
338 | + | |
339 | +/* | |
340 | + * Mount flags | |
341 | + */ | |
342 | +#define EXT3_MOUNT_CHECK 0x00001 /* Do mount-time checks */ | |
343 | +/* EXT3_MOUNT_OLDALLOC was there */ | |
344 | +#define EXT3_MOUNT_GRPID 0x00004 /* Create files with directory's group */ | |
345 | +#define EXT3_MOUNT_DEBUG 0x00008 /* Some debugging messages */ | |
346 | +#define EXT3_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */ | |
347 | +#define EXT3_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */ | |
348 | +#define EXT3_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */ | |
349 | +#define EXT3_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */ | |
350 | +#define EXT3_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/ | |
351 | +#define EXT3_MOUNT_ABORT 0x00200 /* Fatal error detected */ | |
352 | +#define EXT3_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */ | |
353 | +#define EXT3_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */ | |
354 | +#define EXT3_MOUNT_ORDERED_DATA 0x00800 /* Flush data before commit */ | |
355 | +#define EXT3_MOUNT_WRITEBACK_DATA 0x00C00 /* No data ordering */ | |
356 | +#define EXT3_MOUNT_UPDATE_JOURNAL 0x01000 /* Update the journal format */ | |
357 | +#define EXT3_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */ | |
358 | +#define EXT3_MOUNT_XATTR_USER 0x04000 /* Extended user attributes */ | |
359 | +#define EXT3_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */ | |
360 | +#define EXT3_MOUNT_RESERVATION 0x10000 /* Preallocation */ | |
361 | +#define EXT3_MOUNT_BARRIER 0x20000 /* Use block barriers */ | |
362 | +#define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */ | |
363 | +#define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */ | |
364 | +#define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */ | |
365 | +#define EXT3_MOUNT_DATA_ERR_ABORT 0x400000 /* Abort on file data write | |
366 | + * error in ordered mode */ | |
367 | + | |
368 | +/* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */ | |
369 | +#ifndef _LINUX_EXT2_FS_H | |
370 | +#define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt | |
371 | +#define set_opt(o, opt) o |= EXT3_MOUNT_##opt | |
372 | +#define test_opt(sb, opt) (EXT3_SB(sb)->s_mount_opt & \ | |
373 | + EXT3_MOUNT_##opt) | |
374 | +#else | |
375 | +#define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD | |
376 | +#define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT | |
377 | +#define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS | |
378 | +#endif | |
379 | + | |
380 | +#define ext3_set_bit __set_bit_le | |
381 | +#define ext3_set_bit_atomic ext2_set_bit_atomic | |
382 | +#define ext3_clear_bit __clear_bit_le | |
383 | +#define ext3_clear_bit_atomic ext2_clear_bit_atomic | |
384 | +#define ext3_test_bit test_bit_le | |
385 | +#define ext3_find_next_zero_bit find_next_zero_bit_le | |
386 | + | |
387 | +/* | |
388 | + * Maximal mount counts between two filesystem checks | |
389 | + */ | |
390 | +#define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */ | |
391 | +#define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */ | |
392 | + | |
393 | +/* | |
394 | + * Behaviour when detecting errors | |
395 | + */ | |
396 | +#define EXT3_ERRORS_CONTINUE 1 /* Continue execution */ | |
397 | +#define EXT3_ERRORS_RO 2 /* Remount fs read-only */ | |
398 | +#define EXT3_ERRORS_PANIC 3 /* Panic */ | |
399 | +#define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE | |
400 | + | |
401 | +/* | |
402 | + * Structure of the super block | |
403 | + */ | |
404 | +struct ext3_super_block { | |
405 | +/*00*/ __le32 s_inodes_count; /* Inodes count */ | |
406 | + __le32 s_blocks_count; /* Blocks count */ | |
407 | + __le32 s_r_blocks_count; /* Reserved blocks count */ | |
408 | + __le32 s_free_blocks_count; /* Free blocks count */ | |
409 | +/*10*/ __le32 s_free_inodes_count; /* Free inodes count */ | |
410 | + __le32 s_first_data_block; /* First Data Block */ | |
411 | + __le32 s_log_block_size; /* Block size */ | |
412 | + __le32 s_log_frag_size; /* Fragment size */ | |
413 | +/*20*/ __le32 s_blocks_per_group; /* # Blocks per group */ | |
414 | + __le32 s_frags_per_group; /* # Fragments per group */ | |
415 | + __le32 s_inodes_per_group; /* # Inodes per group */ | |
416 | + __le32 s_mtime; /* Mount time */ | |
417 | +/*30*/ __le32 s_wtime; /* Write time */ | |
418 | + __le16 s_mnt_count; /* Mount count */ | |
419 | + __le16 s_max_mnt_count; /* Maximal mount count */ | |
420 | + __le16 s_magic; /* Magic signature */ | |
421 | + __le16 s_state; /* File system state */ | |
422 | + __le16 s_errors; /* Behaviour when detecting errors */ | |
423 | + __le16 s_minor_rev_level; /* minor revision level */ | |
424 | +/*40*/ __le32 s_lastcheck; /* time of last check */ | |
425 | + __le32 s_checkinterval; /* max. time between checks */ | |
426 | + __le32 s_creator_os; /* OS */ | |
427 | + __le32 s_rev_level; /* Revision level */ | |
428 | +/*50*/ __le16 s_def_resuid; /* Default uid for reserved blocks */ | |
429 | + __le16 s_def_resgid; /* Default gid for reserved blocks */ | |
430 | + /* | |
431 | + * These fields are for EXT3_DYNAMIC_REV superblocks only. | |
432 | + * | |
433 | + * Note: the difference between the compatible feature set and | |
434 | + * the incompatible feature set is that if there is a bit set | |
435 | + * in the incompatible feature set that the kernel doesn't | |
436 | + * know about, it should refuse to mount the filesystem. | |
437 | + * | |
438 | + * e2fsck's requirements are more strict; if it doesn't know | |
439 | + * about a feature in either the compatible or incompatible | |
440 | + * feature set, it must abort and not try to meddle with | |
441 | + * things it doesn't understand... | |
442 | + */ | |
443 | + __le32 s_first_ino; /* First non-reserved inode */ | |
444 | + __le16 s_inode_size; /* size of inode structure */ | |
445 | + __le16 s_block_group_nr; /* block group # of this superblock */ | |
446 | + __le32 s_feature_compat; /* compatible feature set */ | |
447 | +/*60*/ __le32 s_feature_incompat; /* incompatible feature set */ | |
448 | + __le32 s_feature_ro_compat; /* readonly-compatible feature set */ | |
449 | +/*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */ | |
450 | +/*78*/ char s_volume_name[16]; /* volume name */ | |
451 | +/*88*/ char s_last_mounted[64]; /* directory where last mounted */ | |
452 | +/*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */ | |
453 | + /* | |
454 | + * Performance hints. Directory preallocation should only | |
455 | + * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on. | |
456 | + */ | |
457 | + __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ | |
458 | + __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ | |
459 | + __le16 s_reserved_gdt_blocks; /* Per group desc for online growth */ | |
460 | + /* | |
461 | + * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set. | |
462 | + */ | |
463 | +/*D0*/ __u8 s_journal_uuid[16]; /* uuid of journal superblock */ | |
464 | +/*E0*/ __le32 s_journal_inum; /* inode number of journal file */ | |
465 | + __le32 s_journal_dev; /* device number of journal file */ | |
466 | + __le32 s_last_orphan; /* start of list of inodes to delete */ | |
467 | + __le32 s_hash_seed[4]; /* HTREE hash seed */ | |
468 | + __u8 s_def_hash_version; /* Default hash version to use */ | |
469 | + __u8 s_reserved_char_pad; | |
470 | + __u16 s_reserved_word_pad; | |
471 | + __le32 s_default_mount_opts; | |
472 | + __le32 s_first_meta_bg; /* First metablock block group */ | |
473 | + __le32 s_mkfs_time; /* When the filesystem was created */ | |
474 | + __le32 s_jnl_blocks[17]; /* Backup of the journal inode */ | |
475 | + /* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */ | |
476 | +/*150*/ __le32 s_blocks_count_hi; /* Blocks count */ | |
477 | + __le32 s_r_blocks_count_hi; /* Reserved blocks count */ | |
478 | + __le32 s_free_blocks_count_hi; /* Free blocks count */ | |
479 | + __le16 s_min_extra_isize; /* All inodes have at least # bytes */ | |
480 | + __le16 s_want_extra_isize; /* New inodes should reserve # bytes */ | |
481 | + __le32 s_flags; /* Miscellaneous flags */ | |
482 | + __le16 s_raid_stride; /* RAID stride */ | |
483 | + __le16 s_mmp_interval; /* # seconds to wait in MMP checking */ | |
484 | + __le64 s_mmp_block; /* Block for multi-mount protection */ | |
485 | + __le32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/ | |
486 | + __u8 s_log_groups_per_flex; /* FLEX_BG group size */ | |
487 | + __u8 s_reserved_char_pad2; | |
488 | + __le16 s_reserved_pad; | |
489 | + __u32 s_reserved[162]; /* Padding to the end of the block */ | |
490 | +}; | |
491 | + | |
492 | +/* data type for block offset of block group */ | |
493 | +typedef int ext3_grpblk_t; | |
494 | + | |
495 | +/* data type for filesystem-wide blocks number */ | |
496 | +typedef unsigned long ext3_fsblk_t; | |
497 | + | |
498 | +#define E3FSBLK "%lu" | |
499 | + | |
500 | +struct ext3_reserve_window { | |
501 | + ext3_fsblk_t _rsv_start; /* First byte reserved */ | |
502 | + ext3_fsblk_t _rsv_end; /* Last byte reserved or 0 */ | |
503 | +}; | |
504 | + | |
505 | +struct ext3_reserve_window_node { | |
506 | + struct rb_node rsv_node; | |
507 | + __u32 rsv_goal_size; | |
508 | + __u32 rsv_alloc_hit; | |
509 | + struct ext3_reserve_window rsv_window; | |
510 | +}; | |
511 | + | |
512 | +struct ext3_block_alloc_info { | |
513 | + /* information about reservation window */ | |
514 | + struct ext3_reserve_window_node rsv_window_node; | |
515 | + /* | |
516 | + * was i_next_alloc_block in ext3_inode_info | |
517 | + * is the logical (file-relative) number of the | |
518 | + * most-recently-allocated block in this file. | |
519 | + * We use this for detecting linearly ascending allocation requests. | |
520 | + */ | |
521 | + __u32 last_alloc_logical_block; | |
522 | + /* | |
523 | + * Was i_next_alloc_goal in ext3_inode_info | |
524 | + * is the *physical* companion to i_next_alloc_block. | |
525 | + * it the physical block number of the block which was most-recentl | |
526 | + * allocated to this file. This give us the goal (target) for the next | |
527 | + * allocation when we detect linearly ascending requests. | |
528 | + */ | |
529 | + ext3_fsblk_t last_alloc_physical_block; | |
530 | +}; | |
531 | + | |
532 | +#define rsv_start rsv_window._rsv_start | |
533 | +#define rsv_end rsv_window._rsv_end | |
534 | + | |
535 | +/* | |
536 | + * third extended file system inode data in memory | |
537 | + */ | |
538 | +struct ext3_inode_info { | |
539 | + __le32 i_data[15]; /* unconverted */ | |
540 | + __u32 i_flags; | |
541 | +#ifdef EXT3_FRAGMENTS | |
542 | + __u32 i_faddr; | |
543 | + __u8 i_frag_no; | |
544 | + __u8 i_frag_size; | |
545 | +#endif | |
546 | + ext3_fsblk_t i_file_acl; | |
547 | + __u32 i_dir_acl; | |
548 | + __u32 i_dtime; | |
549 | + | |
550 | + /* | |
551 | + * i_block_group is the number of the block group which contains | |
552 | + * this file's inode. Constant across the lifetime of the inode, | |
553 | + * it is ued for making block allocation decisions - we try to | |
554 | + * place a file's data blocks near its inode block, and new inodes | |
555 | + * near to their parent directory's inode. | |
556 | + */ | |
557 | + __u32 i_block_group; | |
558 | + unsigned long i_state_flags; /* Dynamic state flags for ext3 */ | |
559 | + | |
560 | + /* block reservation info */ | |
561 | + struct ext3_block_alloc_info *i_block_alloc_info; | |
562 | + | |
563 | + __u32 i_dir_start_lookup; | |
564 | +#ifdef CONFIG_EXT3_FS_XATTR | |
565 | + /* | |
566 | + * Extended attributes can be read independently of the main file | |
567 | + * data. Taking i_mutex even when reading would cause contention | |
568 | + * between readers of EAs and writers of regular file data, so | |
569 | + * instead we synchronize on xattr_sem when reading or changing | |
570 | + * EAs. | |
571 | + */ | |
572 | + struct rw_semaphore xattr_sem; | |
573 | +#endif | |
574 | + | |
575 | + struct list_head i_orphan; /* unlinked but open inodes */ | |
576 | + | |
577 | + /* | |
578 | + * i_disksize keeps track of what the inode size is ON DISK, not | |
579 | + * in memory. During truncate, i_size is set to the new size by | |
580 | + * the VFS prior to calling ext3_truncate(), but the filesystem won't | |
581 | + * set i_disksize to 0 until the truncate is actually under way. | |
582 | + * | |
583 | + * The intent is that i_disksize always represents the blocks which | |
584 | + * are used by this file. This allows recovery to restart truncate | |
585 | + * on orphans if we crash during truncate. We actually write i_disksize | |
586 | + * into the on-disk inode when writing inodes out, instead of i_size. | |
587 | + * | |
588 | + * The only time when i_disksize and i_size may be different is when | |
589 | + * a truncate is in progress. The only things which change i_disksize | |
590 | + * are ext3_get_block (growth) and ext3_truncate (shrinkth). | |
591 | + */ | |
592 | + loff_t i_disksize; | |
593 | + | |
594 | + /* on-disk additional length */ | |
595 | + __u16 i_extra_isize; | |
596 | + | |
597 | + /* | |
598 | + * truncate_mutex is for serialising ext3_truncate() against | |
599 | + * ext3_getblock(). In the 2.4 ext2 design, great chunks of inode's | |
600 | + * data tree are chopped off during truncate. We can't do that in | |
601 | + * ext3 because whenever we perform intermediate commits during | |
602 | + * truncate, the inode and all the metadata blocks *must* be in a | |
603 | + * consistent state which allows truncation of the orphans to restart | |
604 | + * during recovery. Hence we must fix the get_block-vs-truncate race | |
605 | + * by other means, so we have truncate_mutex. | |
606 | + */ | |
607 | + struct mutex truncate_mutex; | |
608 | + | |
609 | + /* | |
610 | + * Transactions that contain inode's metadata needed to complete | |
611 | + * fsync and fdatasync, respectively. | |
612 | + */ | |
613 | + atomic_t i_sync_tid; | |
614 | + atomic_t i_datasync_tid; | |
615 | + | |
616 | + struct inode vfs_inode; | |
617 | +}; | |
618 | + | |
619 | +/* | |
620 | + * third extended-fs super-block data in memory | |
621 | + */ | |
622 | +struct ext3_sb_info { | |
623 | + unsigned long s_frag_size; /* Size of a fragment in bytes */ | |
624 | + unsigned long s_frags_per_block;/* Number of fragments per block */ | |
625 | + unsigned long s_inodes_per_block;/* Number of inodes per block */ | |
626 | + unsigned long s_frags_per_group;/* Number of fragments in a group */ | |
627 | + unsigned long s_blocks_per_group;/* Number of blocks in a group */ | |
628 | + unsigned long s_inodes_per_group;/* Number of inodes in a group */ | |
629 | + unsigned long s_itb_per_group; /* Number of inode table blocks per group */ | |
630 | + unsigned long s_gdb_count; /* Number of group descriptor blocks */ | |
631 | + unsigned long s_desc_per_block; /* Number of group descriptors per block */ | |
632 | + unsigned long s_groups_count; /* Number of groups in the fs */ | |
633 | + unsigned long s_overhead_last; /* Last calculated overhead */ | |
634 | + unsigned long s_blocks_last; /* Last seen block count */ | |
635 | + struct buffer_head * s_sbh; /* Buffer containing the super block */ | |
636 | + struct ext3_super_block * s_es; /* Pointer to the super block in the buffer */ | |
637 | + struct buffer_head ** s_group_desc; | |
638 | + unsigned long s_mount_opt; | |
639 | + ext3_fsblk_t s_sb_block; | |
640 | + uid_t s_resuid; | |
641 | + gid_t s_resgid; | |
642 | + unsigned short s_mount_state; | |
643 | + unsigned short s_pad; | |
644 | + int s_addr_per_block_bits; | |
645 | + int s_desc_per_block_bits; | |
646 | + int s_inode_size; | |
647 | + int s_first_ino; | |
648 | + spinlock_t s_next_gen_lock; | |
649 | + u32 s_next_generation; | |
650 | + u32 s_hash_seed[4]; | |
651 | + int s_def_hash_version; | |
652 | + int s_hash_unsigned; /* 3 if hash should be signed, 0 if not */ | |
653 | + struct percpu_counter s_freeblocks_counter; | |
654 | + struct percpu_counter s_freeinodes_counter; | |
655 | + struct percpu_counter s_dirs_counter; | |
656 | + struct blockgroup_lock *s_blockgroup_lock; | |
657 | + | |
658 | + /* root of the per fs reservation window tree */ | |
659 | + spinlock_t s_rsv_window_lock; | |
660 | + struct rb_root s_rsv_window_root; | |
661 | + struct ext3_reserve_window_node s_rsv_window_head; | |
662 | + | |
663 | + /* Journaling */ | |
664 | + struct inode * s_journal_inode; | |
665 | + struct journal_s * s_journal; | |
666 | + struct list_head s_orphan; | |
667 | + struct mutex s_orphan_lock; | |
668 | + struct mutex s_resize_lock; | |
669 | + unsigned long s_commit_interval; | |
670 | + struct block_device *journal_bdev; | |
671 | +#ifdef CONFIG_QUOTA | |
672 | + char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */ | |
673 | + int s_jquota_fmt; /* Format of quota to use */ | |
674 | +#endif | |
675 | +}; | |
676 | + | |
677 | +static inline spinlock_t * | |
678 | +sb_bgl_lock(struct ext3_sb_info *sbi, unsigned int block_group) | |
679 | +{ | |
680 | + return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group); | |
681 | +} | |
682 | + | |
683 | +static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb) | |
684 | +{ | |
685 | + return sb->s_fs_info; | |
686 | +} | |
687 | +static inline struct ext3_inode_info *EXT3_I(struct inode *inode) | |
688 | +{ | |
689 | + return container_of(inode, struct ext3_inode_info, vfs_inode); | |
690 | +} | |
691 | + | |
692 | +static inline int ext3_valid_inum(struct super_block *sb, unsigned long ino) | |
693 | +{ | |
694 | + return ino == EXT3_ROOT_INO || | |
695 | + ino == EXT3_JOURNAL_INO || | |
696 | + ino == EXT3_RESIZE_INO || | |
697 | + (ino >= EXT3_FIRST_INO(sb) && | |
698 | + ino <= le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)); | |
699 | +} | |
700 | + | |
701 | +/* | |
702 | + * Inode dynamic state flags | |
703 | + */ | |
704 | +enum { | |
705 | + EXT3_STATE_JDATA, /* journaled data exists */ | |
706 | + EXT3_STATE_NEW, /* inode is newly created */ | |
707 | + EXT3_STATE_XATTR, /* has in-inode xattrs */ | |
708 | + EXT3_STATE_FLUSH_ON_CLOSE, /* flush dirty pages on close */ | |
709 | +}; | |
710 | + | |
711 | +static inline int ext3_test_inode_state(struct inode *inode, int bit) | |
712 | +{ | |
713 | + return test_bit(bit, &EXT3_I(inode)->i_state_flags); | |
714 | +} | |
715 | + | |
716 | +static inline void ext3_set_inode_state(struct inode *inode, int bit) | |
717 | +{ | |
718 | + set_bit(bit, &EXT3_I(inode)->i_state_flags); | |
719 | +} | |
720 | + | |
721 | +static inline void ext3_clear_inode_state(struct inode *inode, int bit) | |
722 | +{ | |
723 | + clear_bit(bit, &EXT3_I(inode)->i_state_flags); | |
724 | +} | |
725 | + | |
726 | +#define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime | |
727 | + | |
728 | +/* | |
729 | + * Codes for operating systems | |
730 | + */ | |
731 | +#define EXT3_OS_LINUX 0 | |
732 | +#define EXT3_OS_HURD 1 | |
733 | +#define EXT3_OS_MASIX 2 | |
734 | +#define EXT3_OS_FREEBSD 3 | |
735 | +#define EXT3_OS_LITES 4 | |
736 | + | |
737 | +/* | |
738 | + * Revision levels | |
739 | + */ | |
740 | +#define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */ | |
741 | +#define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ | |
742 | + | |
743 | +#define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV | |
744 | +#define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV | |
745 | + | |
746 | +#define EXT3_GOOD_OLD_INODE_SIZE 128 | |
747 | + | |
748 | +/* | |
749 | + * Feature set definitions | |
750 | + */ | |
751 | + | |
752 | +#define EXT3_HAS_COMPAT_FEATURE(sb,mask) \ | |
753 | + ( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) ) | |
754 | +#define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask) \ | |
755 | + ( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) ) | |
756 | +#define EXT3_HAS_INCOMPAT_FEATURE(sb,mask) \ | |
757 | + ( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) ) | |
758 | +#define EXT3_SET_COMPAT_FEATURE(sb,mask) \ | |
759 | + EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) | |
760 | +#define EXT3_SET_RO_COMPAT_FEATURE(sb,mask) \ | |
761 | + EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) | |
762 | +#define EXT3_SET_INCOMPAT_FEATURE(sb,mask) \ | |
763 | + EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) | |
764 | +#define EXT3_CLEAR_COMPAT_FEATURE(sb,mask) \ | |
765 | + EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) | |
766 | +#define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask) \ | |
767 | + EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) | |
768 | +#define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask) \ | |
769 | + EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) | |
770 | + | |
771 | +#define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001 | |
772 | +#define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002 | |
773 | +#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 | |
774 | +#define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008 | |
775 | +#define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010 | |
776 | +#define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020 | |
777 | + | |
778 | +#define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 | |
779 | +#define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 | |
780 | +#define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 | |
781 | + | |
782 | +#define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001 | |
783 | +#define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002 | |
784 | +#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ | |
785 | +#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */ | |
786 | +#define EXT3_FEATURE_INCOMPAT_META_BG 0x0010 | |
787 | + | |
788 | +#define EXT3_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR | |
789 | +#define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \ | |
790 | + EXT3_FEATURE_INCOMPAT_RECOVER| \ | |
791 | + EXT3_FEATURE_INCOMPAT_META_BG) | |
792 | +#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \ | |
793 | + EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \ | |
794 | + EXT3_FEATURE_RO_COMPAT_BTREE_DIR) | |
795 | + | |
796 | +/* | |
797 | + * Default values for user and/or group using reserved blocks | |
798 | + */ | |
799 | +#define EXT3_DEF_RESUID 0 | |
800 | +#define EXT3_DEF_RESGID 0 | |
801 | + | |
802 | +/* | |
803 | + * Default mount options | |
804 | + */ | |
805 | +#define EXT3_DEFM_DEBUG 0x0001 | |
806 | +#define EXT3_DEFM_BSDGROUPS 0x0002 | |
807 | +#define EXT3_DEFM_XATTR_USER 0x0004 | |
808 | +#define EXT3_DEFM_ACL 0x0008 | |
809 | +#define EXT3_DEFM_UID16 0x0010 | |
810 | +#define EXT3_DEFM_JMODE 0x0060 | |
811 | +#define EXT3_DEFM_JMODE_DATA 0x0020 | |
812 | +#define EXT3_DEFM_JMODE_ORDERED 0x0040 | |
813 | +#define EXT3_DEFM_JMODE_WBACK 0x0060 | |
814 | + | |
815 | +/* | |
816 | + * Structure of a directory entry | |
817 | + */ | |
818 | +#define EXT3_NAME_LEN 255 | |
819 | + | |
820 | +struct ext3_dir_entry { | |
821 | + __le32 inode; /* Inode number */ | |
822 | + __le16 rec_len; /* Directory entry length */ | |
823 | + __le16 name_len; /* Name length */ | |
824 | + char name[EXT3_NAME_LEN]; /* File name */ | |
825 | +}; | |
826 | + | |
827 | +/* | |
828 | + * The new version of the directory entry. Since EXT3 structures are | |
829 | + * stored in intel byte order, and the name_len field could never be | |
830 | + * bigger than 255 chars, it's safe to reclaim the extra byte for the | |
831 | + * file_type field. | |
832 | + */ | |
833 | +struct ext3_dir_entry_2 { | |
834 | + __le32 inode; /* Inode number */ | |
835 | + __le16 rec_len; /* Directory entry length */ | |
836 | + __u8 name_len; /* Name length */ | |
837 | + __u8 file_type; | |
838 | + char name[EXT3_NAME_LEN]; /* File name */ | |
839 | +}; | |
840 | + | |
841 | +/* | |
842 | + * Ext3 directory file types. Only the low 3 bits are used. The | |
843 | + * other bits are reserved for now. | |
844 | + */ | |
845 | +#define EXT3_FT_UNKNOWN 0 | |
846 | +#define EXT3_FT_REG_FILE 1 | |
847 | +#define EXT3_FT_DIR 2 | |
848 | +#define EXT3_FT_CHRDEV 3 | |
849 | +#define EXT3_FT_BLKDEV 4 | |
850 | +#define EXT3_FT_FIFO 5 | |
851 | +#define EXT3_FT_SOCK 6 | |
852 | +#define EXT3_FT_SYMLINK 7 | |
853 | + | |
854 | +#define EXT3_FT_MAX 8 | |
855 | + | |
856 | +/* | |
857 | + * EXT3_DIR_PAD defines the directory entries boundaries | |
858 | + * | |
859 | + * NOTE: It must be a multiple of 4 | |
860 | + */ | |
861 | +#define EXT3_DIR_PAD 4 | |
862 | +#define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1) | |
863 | +#define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \ | |
864 | + ~EXT3_DIR_ROUND) | |
865 | +#define EXT3_MAX_REC_LEN ((1<<16)-1) | |
866 | + | |
867 | +/* | |
868 | + * Tests against MAX_REC_LEN etc were put in place for 64k block | |
869 | + * sizes; if that is not possible on this arch, we can skip | |
870 | + * those tests and speed things up. | |
871 | + */ | |
872 | +static inline unsigned ext3_rec_len_from_disk(__le16 dlen) | |
873 | +{ | |
874 | + unsigned len = le16_to_cpu(dlen); | |
875 | + | |
876 | +#if (PAGE_CACHE_SIZE >= 65536) | |
877 | + if (len == EXT3_MAX_REC_LEN) | |
878 | + return 1 << 16; | |
879 | +#endif | |
880 | + return len; | |
881 | +} | |
882 | + | |
883 | +static inline __le16 ext3_rec_len_to_disk(unsigned len) | |
884 | +{ | |
885 | +#if (PAGE_CACHE_SIZE >= 65536) | |
886 | + if (len == (1 << 16)) | |
887 | + return cpu_to_le16(EXT3_MAX_REC_LEN); | |
888 | + else if (len > (1 << 16)) | |
889 | + BUG(); | |
890 | +#endif | |
891 | + return cpu_to_le16(len); | |
892 | +} | |
893 | + | |
894 | +/* | |
895 | + * Hash Tree Directory indexing | |
896 | + * (c) Daniel Phillips, 2001 | |
897 | + */ | |
898 | + | |
899 | +#define is_dx(dir) (EXT3_HAS_COMPAT_FEATURE(dir->i_sb, \ | |
900 | + EXT3_FEATURE_COMPAT_DIR_INDEX) && \ | |
901 | + (EXT3_I(dir)->i_flags & EXT3_INDEX_FL)) | |
902 | +#define EXT3_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT3_LINK_MAX) | |
903 | +#define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1) | |
904 | + | |
905 | +/* Legal values for the dx_root hash_version field: */ | |
906 | + | |
907 | +#define DX_HASH_LEGACY 0 | |
908 | +#define DX_HASH_HALF_MD4 1 | |
909 | +#define DX_HASH_TEA 2 | |
910 | +#define DX_HASH_LEGACY_UNSIGNED 3 | |
911 | +#define DX_HASH_HALF_MD4_UNSIGNED 4 | |
912 | +#define DX_HASH_TEA_UNSIGNED 5 | |
913 | + | |
914 | +/* hash info structure used by the directory hash */ | |
915 | +struct dx_hash_info | |
916 | +{ | |
917 | + u32 hash; | |
918 | + u32 minor_hash; | |
919 | + int hash_version; | |
920 | + u32 *seed; | |
921 | +}; | |
922 | + | |
923 | +#define EXT3_HTREE_EOF 0x7fffffff | |
924 | + | |
925 | +/* | |
926 | + * Control parameters used by ext3_htree_next_block | |
927 | + */ | |
928 | +#define HASH_NB_ALWAYS 1 | |
929 | + | |
930 | + | |
931 | +/* | |
932 | + * Describe an inode's exact location on disk and in memory | |
933 | + */ | |
934 | +struct ext3_iloc | |
935 | +{ | |
936 | + struct buffer_head *bh; | |
937 | + unsigned long offset; | |
938 | + unsigned long block_group; | |
939 | +}; | |
940 | + | |
941 | +static inline struct ext3_inode *ext3_raw_inode(struct ext3_iloc *iloc) | |
942 | +{ | |
943 | + return (struct ext3_inode *) (iloc->bh->b_data + iloc->offset); | |
944 | +} | |
945 | + | |
946 | +/* | |
947 | + * This structure is stuffed into the struct file's private_data field | |
948 | + * for directories. It is where we put information so that we can do | |
949 | + * readdir operations in hash tree order. | |
950 | + */ | |
951 | +struct dir_private_info { | |
952 | + struct rb_root root; | |
953 | + struct rb_node *curr_node; | |
954 | + struct fname *extra_fname; | |
955 | + loff_t last_pos; | |
956 | + __u32 curr_hash; | |
957 | + __u32 curr_minor_hash; | |
958 | + __u32 next_hash; | |
959 | +}; | |
960 | + | |
961 | +/* calculate the first block number of the group */ | |
962 | +static inline ext3_fsblk_t | |
963 | +ext3_group_first_block_no(struct super_block *sb, unsigned long group_no) | |
964 | +{ | |
965 | + return group_no * (ext3_fsblk_t)EXT3_BLOCKS_PER_GROUP(sb) + | |
966 | + le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block); | |
967 | +} | |
968 | + | |
969 | +/* | |
970 | + * Special error return code only used by dx_probe() and its callers. | |
971 | + */ | |
972 | +#define ERR_BAD_DX_DIR -75000 | |
973 | + | |
974 | +/* | |
975 | + * Function prototypes | |
976 | + */ | |
977 | + | |
978 | +/* | |
979 | + * Ok, these declarations are also in <linux/kernel.h> but none of the | |
980 | + * ext3 source programs needs to include it so they are duplicated here. | |
981 | + */ | |
982 | +# define NORET_TYPE /**/ | |
983 | +# define ATTRIB_NORET __attribute__((noreturn)) | |
984 | +# define NORET_AND noreturn, | |
985 | + | |
986 | +/* balloc.c */ | |
987 | +extern int ext3_bg_has_super(struct super_block *sb, int group); | |
988 | +extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group); | |
989 | +extern ext3_fsblk_t ext3_new_block (handle_t *handle, struct inode *inode, | |
990 | + ext3_fsblk_t goal, int *errp); | |
991 | +extern ext3_fsblk_t ext3_new_blocks (handle_t *handle, struct inode *inode, | |
992 | + ext3_fsblk_t goal, unsigned long *count, int *errp); | |
993 | +extern void ext3_free_blocks (handle_t *handle, struct inode *inode, | |
994 | + ext3_fsblk_t block, unsigned long count); | |
995 | +extern void ext3_free_blocks_sb (handle_t *handle, struct super_block *sb, | |
996 | + ext3_fsblk_t block, unsigned long count, | |
997 | + unsigned long *pdquot_freed_blocks); | |
998 | +extern ext3_fsblk_t ext3_count_free_blocks (struct super_block *); | |
999 | +extern void ext3_check_blocks_bitmap (struct super_block *); | |
1000 | +extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb, | |
1001 | + unsigned int block_group, | |
1002 | + struct buffer_head ** bh); | |
1003 | +extern int ext3_should_retry_alloc(struct super_block *sb, int *retries); | |
1004 | +extern void ext3_init_block_alloc_info(struct inode *); | |
1005 | +extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv); | |
1006 | +extern int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range); | |
1007 | + | |
1008 | +/* dir.c */ | |
1009 | +extern int ext3_check_dir_entry(const char *, struct inode *, | |
1010 | + struct ext3_dir_entry_2 *, | |
1011 | + struct buffer_head *, unsigned long); | |
1012 | +extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash, | |
1013 | + __u32 minor_hash, | |
1014 | + struct ext3_dir_entry_2 *dirent); | |
1015 | +extern void ext3_htree_free_dir_info(struct dir_private_info *p); | |
1016 | + | |
1017 | +/* fsync.c */ | |
1018 | +extern int ext3_sync_file(struct file *, loff_t, loff_t, int); | |
1019 | + | |
1020 | +/* hash.c */ | |
1021 | +extern int ext3fs_dirhash(const char *name, int len, struct | |
1022 | + dx_hash_info *hinfo); | |
1023 | + | |
1024 | +/* ialloc.c */ | |
1025 | +extern struct inode * ext3_new_inode (handle_t *, struct inode *, | |
1026 | + const struct qstr *, umode_t); | |
1027 | +extern void ext3_free_inode (handle_t *, struct inode *); | |
1028 | +extern struct inode * ext3_orphan_get (struct super_block *, unsigned long); | |
1029 | +extern unsigned long ext3_count_free_inodes (struct super_block *); | |
1030 | +extern unsigned long ext3_count_dirs (struct super_block *); | |
1031 | +extern void ext3_check_inodes_bitmap (struct super_block *); | |
1032 | +extern unsigned long ext3_count_free (struct buffer_head *, unsigned); | |
1033 | + | |
1034 | + | |
1035 | +/* inode.c */ | |
1036 | +int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode, | |
1037 | + struct buffer_head *bh, ext3_fsblk_t blocknr); | |
1038 | +struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *); | |
1039 | +struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *); | |
1040 | +int ext3_get_blocks_handle(handle_t *handle, struct inode *inode, | |
1041 | + sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result, | |
1042 | + int create); | |
1043 | + | |
1044 | +extern struct inode *ext3_iget(struct super_block *, unsigned long); | |
1045 | +extern int ext3_write_inode (struct inode *, struct writeback_control *); | |
1046 | +extern int ext3_setattr (struct dentry *, struct iattr *); | |
1047 | +extern void ext3_evict_inode (struct inode *); | |
1048 | +extern int ext3_sync_inode (handle_t *, struct inode *); | |
1049 | +extern void ext3_discard_reservation (struct inode *); | |
1050 | +extern void ext3_dirty_inode(struct inode *, int); | |
1051 | +extern int ext3_change_inode_journal_flag(struct inode *, int); | |
1052 | +extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *); | |
1053 | +extern int ext3_can_truncate(struct inode *inode); | |
1054 | +extern void ext3_truncate(struct inode *inode); | |
1055 | +extern void ext3_set_inode_flags(struct inode *); | |
1056 | +extern void ext3_get_inode_flags(struct ext3_inode_info *); | |
1057 | +extern void ext3_set_aops(struct inode *inode); | |
1058 | +extern int ext3_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, | |
1059 | + u64 start, u64 len); | |
1060 | + | |
1061 | +/* ioctl.c */ | |
1062 | +extern long ext3_ioctl(struct file *, unsigned int, unsigned long); | |
1063 | +extern long ext3_compat_ioctl(struct file *, unsigned int, unsigned long); | |
1064 | + | |
1065 | +/* namei.c */ | |
1066 | +extern int ext3_orphan_add(handle_t *, struct inode *); | |
1067 | +extern int ext3_orphan_del(handle_t *, struct inode *); | |
1068 | +extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash, | |
1069 | + __u32 start_minor_hash, __u32 *next_hash); | |
1070 | + | |
1071 | +/* resize.c */ | |
1072 | +extern int ext3_group_add(struct super_block *sb, | |
1073 | + struct ext3_new_group_data *input); | |
1074 | +extern int ext3_group_extend(struct super_block *sb, | |
1075 | + struct ext3_super_block *es, | |
1076 | + ext3_fsblk_t n_blocks_count); | |
1077 | + | |
1078 | +/* super.c */ | |
1079 | +extern __printf(3, 4) | |
1080 | +void ext3_error(struct super_block *, const char *, const char *, ...); | |
1081 | +extern void __ext3_std_error (struct super_block *, const char *, int); | |
1082 | +extern __printf(3, 4) | |
1083 | +void ext3_abort(struct super_block *, const char *, const char *, ...); | |
1084 | +extern __printf(3, 4) | |
1085 | +void ext3_warning(struct super_block *, const char *, const char *, ...); | |
1086 | +extern __printf(3, 4) | |
1087 | +void ext3_msg(struct super_block *, const char *, const char *, ...); | |
1088 | +extern void ext3_update_dynamic_rev (struct super_block *sb); | |
1089 | + | |
1090 | +#define ext3_std_error(sb, errno) \ | |
1091 | +do { \ | |
1092 | + if ((errno)) \ | |
1093 | + __ext3_std_error((sb), __func__, (errno)); \ | |
1094 | +} while (0) | |
1095 | + | |
1096 | +/* | |
1097 | + * Inodes and files operations | |
1098 | + */ | |
1099 | + | |
1100 | +/* dir.c */ | |
1101 | +extern const struct file_operations ext3_dir_operations; | |
1102 | + | |
1103 | +/* file.c */ | |
1104 | +extern const struct inode_operations ext3_file_inode_operations; | |
1105 | +extern const struct file_operations ext3_file_operations; | |
1106 | + | |
1107 | +/* namei.c */ | |
1108 | +extern const struct inode_operations ext3_dir_inode_operations; | |
1109 | +extern const struct inode_operations ext3_special_inode_operations; | |
1110 | + | |
1111 | +/* symlink.c */ | |
1112 | +extern const struct inode_operations ext3_symlink_inode_operations; | |
1113 | +extern const struct inode_operations ext3_fast_symlink_inode_operations; | |
1114 | + | |
1115 | +#define EXT3_JOURNAL(inode) (EXT3_SB((inode)->i_sb)->s_journal) | |
1116 | + | |
1117 | +/* Define the number of blocks we need to account to a transaction to | |
1118 | + * modify one block of data. | |
1119 | + * | |
1120 | + * We may have to touch one inode, one bitmap buffer, up to three | |
1121 | + * indirection blocks, the group and superblock summaries, and the data | |
1122 | + * block to complete the transaction. */ | |
1123 | + | |
1124 | +#define EXT3_SINGLEDATA_TRANS_BLOCKS 8U | |
1125 | + | |
1126 | +/* Extended attribute operations touch at most two data buffers, | |
1127 | + * two bitmap buffers, and two group summaries, in addition to the inode | |
1128 | + * and the superblock, which are already accounted for. */ | |
1129 | + | |
1130 | +#define EXT3_XATTR_TRANS_BLOCKS 6U | |
1131 | + | |
1132 | +/* Define the minimum size for a transaction which modifies data. This | |
1133 | + * needs to take into account the fact that we may end up modifying two | |
1134 | + * quota files too (one for the group, one for the user quota). The | |
1135 | + * superblock only gets updated once, of course, so don't bother | |
1136 | + * counting that again for the quota updates. */ | |
1137 | + | |
1138 | +#define EXT3_DATA_TRANS_BLOCKS(sb) (EXT3_SINGLEDATA_TRANS_BLOCKS + \ | |
1139 | + EXT3_XATTR_TRANS_BLOCKS - 2 + \ | |
1140 | + EXT3_MAXQUOTAS_TRANS_BLOCKS(sb)) | |
1141 | + | |
1142 | +/* Delete operations potentially hit one directory's namespace plus an | |
1143 | + * entire inode, plus arbitrary amounts of bitmap/indirection data. Be | |
1144 | + * generous. We can grow the delete transaction later if necessary. */ | |
1145 | + | |
1146 | +#define EXT3_DELETE_TRANS_BLOCKS(sb) (EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) + 64) | |
1147 | + | |
1148 | +/* Define an arbitrary limit for the amount of data we will anticipate | |
1149 | + * writing to any given transaction. For unbounded transactions such as | |
1150 | + * write(2) and truncate(2) we can write more than this, but we always | |
1151 | + * start off at the maximum transaction size and grow the transaction | |
1152 | + * optimistically as we go. */ | |
1153 | + | |
1154 | +#define EXT3_MAX_TRANS_DATA 64U | |
1155 | + | |
1156 | +/* We break up a large truncate or write transaction once the handle's | |
1157 | + * buffer credits gets this low, we need either to extend the | |
1158 | + * transaction or to start a new one. Reserve enough space here for | |
1159 | + * inode, bitmap, superblock, group and indirection updates for at least | |
1160 | + * one block, plus two quota updates. Quota allocations are not | |
1161 | + * needed. */ | |
1162 | + | |
1163 | +#define EXT3_RESERVE_TRANS_BLOCKS 12U | |
1164 | + | |
1165 | +#define EXT3_INDEX_EXTRA_TRANS_BLOCKS 8 | |
1166 | + | |
1167 | +#ifdef CONFIG_QUOTA | |
1168 | +/* Amount of blocks needed for quota update - we know that the structure was | |
1169 | + * allocated so we need to update only inode+data */ | |
1170 | +#define EXT3_QUOTA_TRANS_BLOCKS(sb) (test_opt(sb, QUOTA) ? 2 : 0) | |
1171 | +/* Amount of blocks needed for quota insert/delete - we do some block writes | |
1172 | + * but inode, sb and group updates are done only once */ | |
1173 | +#define EXT3_QUOTA_INIT_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_INIT_ALLOC*\ | |
1174 | + (EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_INIT_REWRITE) : 0) | |
1175 | +#define EXT3_QUOTA_DEL_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_DEL_ALLOC*\ | |
1176 | + (EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_DEL_REWRITE) : 0) | |
1177 | +#else | |
1178 | +#define EXT3_QUOTA_TRANS_BLOCKS(sb) 0 | |
1179 | +#define EXT3_QUOTA_INIT_BLOCKS(sb) 0 | |
1180 | +#define EXT3_QUOTA_DEL_BLOCKS(sb) 0 | |
1181 | +#endif | |
1182 | +#define EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_TRANS_BLOCKS(sb)) | |
1183 | +#define EXT3_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_INIT_BLOCKS(sb)) | |
1184 | +#define EXT3_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_DEL_BLOCKS(sb)) | |
1185 | + | |
1186 | +int | |
1187 | +ext3_mark_iloc_dirty(handle_t *handle, | |
1188 | + struct inode *inode, | |
1189 | + struct ext3_iloc *iloc); | |
1190 | + | |
1191 | +/* | |
1192 | + * On success, We end up with an outstanding reference count against | |
1193 | + * iloc->bh. This _must_ be cleaned up later. | |
1194 | + */ | |
1195 | + | |
1196 | +int ext3_reserve_inode_write(handle_t *handle, struct inode *inode, | |
1197 | + struct ext3_iloc *iloc); | |
1198 | + | |
1199 | +int ext3_mark_inode_dirty(handle_t *handle, struct inode *inode); | |
1200 | + | |
1201 | +/* | |
1202 | + * Wrapper functions with which ext3 calls into JBD. The intent here is | |
1203 | + * to allow these to be turned into appropriate stubs so ext3 can control | |
1204 | + * ext2 filesystems, so ext2+ext3 systems only nee one fs. This work hasn't | |
1205 | + * been done yet. | |
1206 | + */ | |
1207 | + | |
1208 | +static inline void ext3_journal_release_buffer(handle_t *handle, | |
1209 | + struct buffer_head *bh) | |
1210 | +{ | |
1211 | + journal_release_buffer(handle, bh); | |
1212 | +} | |
1213 | + | |
1214 | +void ext3_journal_abort_handle(const char *caller, const char *err_fn, | |
1215 | + struct buffer_head *bh, handle_t *handle, int err); | |
1216 | + | |
1217 | +int __ext3_journal_get_undo_access(const char *where, handle_t *handle, | |
1218 | + struct buffer_head *bh); | |
1219 | + | |
1220 | +int __ext3_journal_get_write_access(const char *where, handle_t *handle, | |
1221 | + struct buffer_head *bh); | |
1222 | + | |
1223 | +int __ext3_journal_forget(const char *where, handle_t *handle, | |
1224 | + struct buffer_head *bh); | |
1225 | + | |
1226 | +int __ext3_journal_revoke(const char *where, handle_t *handle, | |
1227 | + unsigned long blocknr, struct buffer_head *bh); | |
1228 | + | |
1229 | +int __ext3_journal_get_create_access(const char *where, | |
1230 | + handle_t *handle, struct buffer_head *bh); | |
1231 | + | |
1232 | +int __ext3_journal_dirty_metadata(const char *where, | |
1233 | + handle_t *handle, struct buffer_head *bh); | |
1234 | + | |
1235 | +#define ext3_journal_get_undo_access(handle, bh) \ | |
1236 | + __ext3_journal_get_undo_access(__func__, (handle), (bh)) | |
1237 | +#define ext3_journal_get_write_access(handle, bh) \ | |
1238 | + __ext3_journal_get_write_access(__func__, (handle), (bh)) | |
1239 | +#define ext3_journal_revoke(handle, blocknr, bh) \ | |
1240 | + __ext3_journal_revoke(__func__, (handle), (blocknr), (bh)) | |
1241 | +#define ext3_journal_get_create_access(handle, bh) \ | |
1242 | + __ext3_journal_get_create_access(__func__, (handle), (bh)) | |
1243 | +#define ext3_journal_dirty_metadata(handle, bh) \ | |
1244 | + __ext3_journal_dirty_metadata(__func__, (handle), (bh)) | |
1245 | +#define ext3_journal_forget(handle, bh) \ | |
1246 | + __ext3_journal_forget(__func__, (handle), (bh)) | |
1247 | + | |
1248 | +int ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh); | |
1249 | + | |
1250 | +handle_t *ext3_journal_start_sb(struct super_block *sb, int nblocks); | |
1251 | +int __ext3_journal_stop(const char *where, handle_t *handle); | |
1252 | + | |
1253 | +static inline handle_t *ext3_journal_start(struct inode *inode, int nblocks) | |
1254 | +{ | |
1255 | + return ext3_journal_start_sb(inode->i_sb, nblocks); | |
1256 | +} | |
1257 | + | |
1258 | +#define ext3_journal_stop(handle) \ | |
1259 | + __ext3_journal_stop(__func__, (handle)) | |
1260 | + | |
1261 | +static inline handle_t *ext3_journal_current_handle(void) | |
1262 | +{ | |
1263 | + return journal_current_handle(); | |
1264 | +} | |
1265 | + | |
1266 | +static inline int ext3_journal_extend(handle_t *handle, int nblocks) | |
1267 | +{ | |
1268 | + return journal_extend(handle, nblocks); | |
1269 | +} | |
1270 | + | |
1271 | +static inline int ext3_journal_restart(handle_t *handle, int nblocks) | |
1272 | +{ | |
1273 | + return journal_restart(handle, nblocks); | |
1274 | +} | |
1275 | + | |
1276 | +static inline int ext3_journal_blocks_per_page(struct inode *inode) | |
1277 | +{ | |
1278 | + return journal_blocks_per_page(inode); | |
1279 | +} | |
1280 | + | |
1281 | +static inline int ext3_journal_force_commit(journal_t *journal) | |
1282 | +{ | |
1283 | + return journal_force_commit(journal); | |
1284 | +} | |
1285 | + | |
1286 | +/* super.c */ | |
1287 | +int ext3_force_commit(struct super_block *sb); | |
1288 | + | |
1289 | +static inline int ext3_should_journal_data(struct inode *inode) | |
1290 | +{ | |
1291 | + if (!S_ISREG(inode->i_mode)) | |
1292 | + return 1; | |
1293 | + if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA) | |
1294 | + return 1; | |
1295 | + if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL) | |
1296 | + return 1; | |
1297 | + return 0; | |
1298 | +} | |
1299 | + | |
1300 | +static inline int ext3_should_order_data(struct inode *inode) | |
1301 | +{ | |
1302 | + if (!S_ISREG(inode->i_mode)) | |
1303 | + return 0; | |
1304 | + if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL) | |
1305 | + return 0; | |
1306 | + if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA) | |
1307 | + return 1; | |
1308 | + return 0; | |
1309 | +} | |
1310 | + | |
1311 | +static inline int ext3_should_writeback_data(struct inode *inode) | |
1312 | +{ | |
1313 | + if (!S_ISREG(inode->i_mode)) | |
1314 | + return 0; | |
1315 | + if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL) | |
1316 | + return 0; | |
1317 | + if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA) | |
1318 | + return 1; | |
1319 | + return 0; | |
1320 | +} | |
1321 | + | |
1322 | +#include <trace/events/ext3.h> |
fs/ext3/ext3_jbd.c
fs/ext3/file.c
... | ... | @@ -18,12 +18,8 @@ |
18 | 18 | * (jj@sunsite.ms.mff.cuni.cz) |
19 | 19 | */ |
20 | 20 | |
21 | -#include <linux/time.h> | |
22 | -#include <linux/fs.h> | |
23 | -#include <linux/jbd.h> | |
24 | 21 | #include <linux/quotaops.h> |
25 | -#include <linux/ext3_fs.h> | |
26 | -#include <linux/ext3_jbd.h> | |
22 | +#include "ext3.h" | |
27 | 23 | #include "xattr.h" |
28 | 24 | #include "acl.h" |
29 | 25 |
fs/ext3/fsync.c
... | ... | @@ -22,15 +22,9 @@ |
22 | 22 | * we can depend on generic_block_fdatasync() to sync the data blocks. |
23 | 23 | */ |
24 | 24 | |
25 | -#include <linux/time.h> | |
26 | 25 | #include <linux/blkdev.h> |
27 | -#include <linux/fs.h> | |
28 | -#include <linux/sched.h> | |
29 | 26 | #include <linux/writeback.h> |
30 | -#include <linux/jbd.h> | |
31 | -#include <linux/ext3_fs.h> | |
32 | -#include <linux/ext3_jbd.h> | |
33 | -#include <trace/events/ext3.h> | |
27 | +#include "ext3.h" | |
34 | 28 | |
35 | 29 | /* |
36 | 30 | * akpm: A new design for ext3_sync_file(). |
fs/ext3/hash.c
fs/ext3/ialloc.c
... | ... | @@ -12,21 +12,10 @@ |
12 | 12 | * David S. Miller (davem@caip.rutgers.edu), 1995 |
13 | 13 | */ |
14 | 14 | |
15 | -#include <linux/time.h> | |
16 | -#include <linux/fs.h> | |
17 | -#include <linux/jbd.h> | |
18 | -#include <linux/ext3_fs.h> | |
19 | -#include <linux/ext3_jbd.h> | |
20 | -#include <linux/stat.h> | |
21 | -#include <linux/string.h> | |
22 | 15 | #include <linux/quotaops.h> |
23 | -#include <linux/buffer_head.h> | |
24 | 16 | #include <linux/random.h> |
25 | -#include <linux/bitops.h> | |
26 | -#include <trace/events/ext3.h> | |
27 | 17 | |
28 | -#include <asm/byteorder.h> | |
29 | - | |
18 | +#include "ext3.h" | |
30 | 19 | #include "xattr.h" |
31 | 20 | #include "acl.h" |
32 | 21 |
fs/ext3/inode.c
... | ... | @@ -22,22 +22,12 @@ |
22 | 22 | * Assorted race fixes, rewrite of ext3_get_block() by Al Viro, 2000 |
23 | 23 | */ |
24 | 24 | |
25 | -#include <linux/fs.h> | |
26 | -#include <linux/time.h> | |
27 | -#include <linux/ext3_jbd.h> | |
28 | -#include <linux/jbd.h> | |
29 | 25 | #include <linux/highuid.h> |
30 | -#include <linux/pagemap.h> | |
31 | 26 | #include <linux/quotaops.h> |
32 | -#include <linux/string.h> | |
33 | -#include <linux/buffer_head.h> | |
34 | 27 | #include <linux/writeback.h> |
35 | 28 | #include <linux/mpage.h> |
36 | -#include <linux/uio.h> | |
37 | -#include <linux/bio.h> | |
38 | -#include <linux/fiemap.h> | |
39 | 29 | #include <linux/namei.h> |
40 | -#include <trace/events/ext3.h> | |
30 | +#include "ext3.h" | |
41 | 31 | #include "xattr.h" |
42 | 32 | #include "acl.h" |
43 | 33 |
fs/ext3/ioctl.c
... | ... | @@ -7,15 +7,10 @@ |
7 | 7 | * Universite Pierre et Marie Curie (Paris VI) |
8 | 8 | */ |
9 | 9 | |
10 | -#include <linux/fs.h> | |
11 | -#include <linux/jbd.h> | |
12 | -#include <linux/capability.h> | |
13 | -#include <linux/ext3_fs.h> | |
14 | -#include <linux/ext3_jbd.h> | |
15 | 10 | #include <linux/mount.h> |
16 | -#include <linux/time.h> | |
17 | 11 | #include <linux/compat.h> |
18 | 12 | #include <asm/uaccess.h> |
13 | +#include "ext3.h" | |
19 | 14 | |
20 | 15 | long ext3_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
21 | 16 | { |
fs/ext3/namei.c
... | ... | @@ -24,20 +24,8 @@ |
24 | 24 | * Theodore Ts'o, 2002 |
25 | 25 | */ |
26 | 26 | |
27 | -#include <linux/fs.h> | |
28 | -#include <linux/pagemap.h> | |
29 | -#include <linux/jbd.h> | |
30 | -#include <linux/time.h> | |
31 | -#include <linux/ext3_fs.h> | |
32 | -#include <linux/ext3_jbd.h> | |
33 | -#include <linux/fcntl.h> | |
34 | -#include <linux/stat.h> | |
35 | -#include <linux/string.h> | |
36 | 27 | #include <linux/quotaops.h> |
37 | -#include <linux/buffer_head.h> | |
38 | -#include <linux/bio.h> | |
39 | -#include <trace/events/ext3.h> | |
40 | - | |
28 | +#include "ext3.h" | |
41 | 29 | #include "namei.h" |
42 | 30 | #include "xattr.h" |
43 | 31 | #include "acl.h" |
fs/ext3/resize.c
fs/ext3/super.c
... | ... | @@ -17,22 +17,12 @@ |
17 | 17 | */ |
18 | 18 | |
19 | 19 | #include <linux/module.h> |
20 | -#include <linux/string.h> | |
21 | -#include <linux/fs.h> | |
22 | -#include <linux/time.h> | |
23 | -#include <linux/jbd.h> | |
24 | -#include <linux/ext3_fs.h> | |
25 | -#include <linux/ext3_jbd.h> | |
26 | -#include <linux/slab.h> | |
27 | -#include <linux/init.h> | |
28 | 20 | #include <linux/blkdev.h> |
29 | 21 | #include <linux/parser.h> |
30 | -#include <linux/buffer_head.h> | |
31 | 22 | #include <linux/exportfs.h> |
32 | -#include <linux/vfs.h> | |
23 | +#include <linux/statfs.h> | |
33 | 24 | #include <linux/random.h> |
34 | 25 | #include <linux/mount.h> |
35 | -#include <linux/namei.h> | |
36 | 26 | #include <linux/quotaops.h> |
37 | 27 | #include <linux/seq_file.h> |
38 | 28 | #include <linux/log2.h> |
39 | 29 | |
... | ... | @@ -40,12 +30,12 @@ |
40 | 30 | |
41 | 31 | #include <asm/uaccess.h> |
42 | 32 | |
33 | +#define CREATE_TRACE_POINTS | |
34 | + | |
35 | +#include "ext3.h" | |
43 | 36 | #include "xattr.h" |
44 | 37 | #include "acl.h" |
45 | 38 | #include "namei.h" |
46 | - | |
47 | -#define CREATE_TRACE_POINTS | |
48 | -#include <trace/events/ext3.h> | |
49 | 39 | |
50 | 40 | #ifdef CONFIG_EXT3_DEFAULTS_TO_ORDERED |
51 | 41 | #define EXT3_MOUNT_DEFAULT_DATA_MODE EXT3_MOUNT_ORDERED_DATA |
fs/ext3/symlink.c
... | ... | @@ -17,10 +17,8 @@ |
17 | 17 | * ext3 symlink handling code |
18 | 18 | */ |
19 | 19 | |
20 | -#include <linux/fs.h> | |
21 | -#include <linux/jbd.h> | |
22 | -#include <linux/ext3_fs.h> | |
23 | 20 | #include <linux/namei.h> |
21 | +#include "ext3.h" | |
24 | 22 | #include "xattr.h" |
25 | 23 | |
26 | 24 | static void * ext3_follow_link(struct dentry *dentry, struct nameidata *nd) |
fs/ext3/xattr.c
... | ... | @@ -50,14 +50,9 @@ |
50 | 50 | * by the buffer lock. |
51 | 51 | */ |
52 | 52 | |
53 | -#include <linux/init.h> | |
54 | -#include <linux/fs.h> | |
55 | -#include <linux/slab.h> | |
56 | -#include <linux/ext3_jbd.h> | |
57 | -#include <linux/ext3_fs.h> | |
53 | +#include "ext3.h" | |
58 | 54 | #include <linux/mbcache.h> |
59 | 55 | #include <linux/quotaops.h> |
60 | -#include <linux/rwsem.h> | |
61 | 56 | #include "xattr.h" |
62 | 57 | #include "acl.h" |
63 | 58 |
fs/ext3/xattr_security.c
... | ... | @@ -3,12 +3,8 @@ |
3 | 3 | * Handler for storing security labels as extended attributes. |
4 | 4 | */ |
5 | 5 | |
6 | -#include <linux/slab.h> | |
7 | -#include <linux/string.h> | |
8 | -#include <linux/fs.h> | |
9 | -#include <linux/ext3_jbd.h> | |
10 | -#include <linux/ext3_fs.h> | |
11 | 6 | #include <linux/security.h> |
7 | +#include "ext3.h" | |
12 | 8 | #include "xattr.h" |
13 | 9 | |
14 | 10 | static size_t |
fs/ext3/xattr_trusted.c
... | ... | @@ -5,11 +5,7 @@ |
5 | 5 | * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org> |
6 | 6 | */ |
7 | 7 | |
8 | -#include <linux/string.h> | |
9 | -#include <linux/capability.h> | |
10 | -#include <linux/fs.h> | |
11 | -#include <linux/ext3_jbd.h> | |
12 | -#include <linux/ext3_fs.h> | |
8 | +#include "ext3.h" | |
13 | 9 | #include "xattr.h" |
14 | 10 | |
15 | 11 | static size_t |
fs/ext3/xattr_user.c
... | ... | @@ -5,10 +5,7 @@ |
5 | 5 | * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> |
6 | 6 | */ |
7 | 7 | |
8 | -#include <linux/string.h> | |
9 | -#include <linux/fs.h> | |
10 | -#include <linux/ext3_jbd.h> | |
11 | -#include <linux/ext3_fs.h> | |
8 | +#include "ext3.h" | |
12 | 9 | #include "xattr.h" |
13 | 10 | |
14 | 11 | static size_t |
include/linux/ext3_fs.h
1 | -/* | |
2 | - * linux/include/linux/ext3_fs.h | |
3 | - * | |
4 | - * Copyright (C) 1992, 1993, 1994, 1995 | |
5 | - * Remy Card (card@masi.ibp.fr) | |
6 | - * Laboratoire MASI - Institut Blaise Pascal | |
7 | - * Universite Pierre et Marie Curie (Paris VI) | |
8 | - * | |
9 | - * from | |
10 | - * | |
11 | - * linux/include/linux/minix_fs.h | |
12 | - * | |
13 | - * Copyright (C) 1991, 1992 Linus Torvalds | |
14 | - */ | |
15 | - | |
16 | -#ifndef _LINUX_EXT3_FS_H | |
17 | -#define _LINUX_EXT3_FS_H | |
18 | - | |
19 | -#include <linux/types.h> | |
20 | -#include <linux/magic.h> | |
21 | -#include <linux/bug.h> | |
22 | - | |
23 | -/* | |
24 | - * The second extended filesystem constants/structures | |
25 | - */ | |
26 | - | |
27 | -/* | |
28 | - * Define EXT3FS_DEBUG to produce debug messages | |
29 | - */ | |
30 | -#undef EXT3FS_DEBUG | |
31 | - | |
32 | -/* | |
33 | - * Define EXT3_RESERVATION to reserve data blocks for expanding files | |
34 | - */ | |
35 | -#define EXT3_DEFAULT_RESERVE_BLOCKS 8 | |
36 | -/*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */ | |
37 | -#define EXT3_MAX_RESERVE_BLOCKS 1027 | |
38 | -#define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0 | |
39 | - | |
40 | -/* | |
41 | - * Debug code | |
42 | - */ | |
43 | -#ifdef EXT3FS_DEBUG | |
44 | -#define ext3_debug(f, a...) \ | |
45 | - do { \ | |
46 | - printk (KERN_DEBUG "EXT3-fs DEBUG (%s, %d): %s:", \ | |
47 | - __FILE__, __LINE__, __func__); \ | |
48 | - printk (KERN_DEBUG f, ## a); \ | |
49 | - } while (0) | |
50 | -#else | |
51 | -#define ext3_debug(f, a...) do {} while (0) | |
52 | -#endif | |
53 | - | |
54 | -/* | |
55 | - * Special inodes numbers | |
56 | - */ | |
57 | -#define EXT3_BAD_INO 1 /* Bad blocks inode */ | |
58 | -#define EXT3_ROOT_INO 2 /* Root inode */ | |
59 | -#define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */ | |
60 | -#define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */ | |
61 | -#define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */ | |
62 | -#define EXT3_JOURNAL_INO 8 /* Journal inode */ | |
63 | - | |
64 | -/* First non-reserved inode for old ext3 filesystems */ | |
65 | -#define EXT3_GOOD_OLD_FIRST_INO 11 | |
66 | - | |
67 | -/* | |
68 | - * Maximal count of links to a file | |
69 | - */ | |
70 | -#define EXT3_LINK_MAX 32000 | |
71 | - | |
72 | -/* | |
73 | - * Macro-instructions used to manage several block sizes | |
74 | - */ | |
75 | -#define EXT3_MIN_BLOCK_SIZE 1024 | |
76 | -#define EXT3_MAX_BLOCK_SIZE 65536 | |
77 | -#define EXT3_MIN_BLOCK_LOG_SIZE 10 | |
78 | -#ifdef __KERNEL__ | |
79 | -# define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize) | |
80 | -#else | |
81 | -# define EXT3_BLOCK_SIZE(s) (EXT3_MIN_BLOCK_SIZE << (s)->s_log_block_size) | |
82 | -#endif | |
83 | -#define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (__u32)) | |
84 | -#ifdef __KERNEL__ | |
85 | -# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits) | |
86 | -#else | |
87 | -# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) | |
88 | -#endif | |
89 | -#ifdef __KERNEL__ | |
90 | -#define EXT3_ADDR_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_addr_per_block_bits) | |
91 | -#define EXT3_INODE_SIZE(s) (EXT3_SB(s)->s_inode_size) | |
92 | -#define EXT3_FIRST_INO(s) (EXT3_SB(s)->s_first_ino) | |
93 | -#else | |
94 | -#define EXT3_INODE_SIZE(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \ | |
95 | - EXT3_GOOD_OLD_INODE_SIZE : \ | |
96 | - (s)->s_inode_size) | |
97 | -#define EXT3_FIRST_INO(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \ | |
98 | - EXT3_GOOD_OLD_FIRST_INO : \ | |
99 | - (s)->s_first_ino) | |
100 | -#endif | |
101 | - | |
102 | -/* | |
103 | - * Macro-instructions used to manage fragments | |
104 | - */ | |
105 | -#define EXT3_MIN_FRAG_SIZE 1024 | |
106 | -#define EXT3_MAX_FRAG_SIZE 4096 | |
107 | -#define EXT3_MIN_FRAG_LOG_SIZE 10 | |
108 | -#ifdef __KERNEL__ | |
109 | -# define EXT3_FRAG_SIZE(s) (EXT3_SB(s)->s_frag_size) | |
110 | -# define EXT3_FRAGS_PER_BLOCK(s) (EXT3_SB(s)->s_frags_per_block) | |
111 | -#else | |
112 | -# define EXT3_FRAG_SIZE(s) (EXT3_MIN_FRAG_SIZE << (s)->s_log_frag_size) | |
113 | -# define EXT3_FRAGS_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / EXT3_FRAG_SIZE(s)) | |
114 | -#endif | |
115 | - | |
116 | -/* | |
117 | - * Structure of a blocks group descriptor | |
118 | - */ | |
119 | -struct ext3_group_desc | |
120 | -{ | |
121 | - __le32 bg_block_bitmap; /* Blocks bitmap block */ | |
122 | - __le32 bg_inode_bitmap; /* Inodes bitmap block */ | |
123 | - __le32 bg_inode_table; /* Inodes table block */ | |
124 | - __le16 bg_free_blocks_count; /* Free blocks count */ | |
125 | - __le16 bg_free_inodes_count; /* Free inodes count */ | |
126 | - __le16 bg_used_dirs_count; /* Directories count */ | |
127 | - __u16 bg_pad; | |
128 | - __le32 bg_reserved[3]; | |
129 | -}; | |
130 | - | |
131 | -/* | |
132 | - * Macro-instructions used to manage group descriptors | |
133 | - */ | |
134 | -#ifdef __KERNEL__ | |
135 | -# define EXT3_BLOCKS_PER_GROUP(s) (EXT3_SB(s)->s_blocks_per_group) | |
136 | -# define EXT3_DESC_PER_BLOCK(s) (EXT3_SB(s)->s_desc_per_block) | |
137 | -# define EXT3_INODES_PER_GROUP(s) (EXT3_SB(s)->s_inodes_per_group) | |
138 | -# define EXT3_DESC_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_desc_per_block_bits) | |
139 | -#else | |
140 | -# define EXT3_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) | |
141 | -# define EXT3_DESC_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_group_desc)) | |
142 | -# define EXT3_INODES_PER_GROUP(s) ((s)->s_inodes_per_group) | |
143 | -#endif | |
144 | - | |
145 | -/* | |
146 | - * Constants relative to the data blocks | |
147 | - */ | |
148 | -#define EXT3_NDIR_BLOCKS 12 | |
149 | -#define EXT3_IND_BLOCK EXT3_NDIR_BLOCKS | |
150 | -#define EXT3_DIND_BLOCK (EXT3_IND_BLOCK + 1) | |
151 | -#define EXT3_TIND_BLOCK (EXT3_DIND_BLOCK + 1) | |
152 | -#define EXT3_N_BLOCKS (EXT3_TIND_BLOCK + 1) | |
153 | - | |
154 | -/* | |
155 | - * Inode flags | |
156 | - */ | |
157 | -#define EXT3_SECRM_FL 0x00000001 /* Secure deletion */ | |
158 | -#define EXT3_UNRM_FL 0x00000002 /* Undelete */ | |
159 | -#define EXT3_COMPR_FL 0x00000004 /* Compress file */ | |
160 | -#define EXT3_SYNC_FL 0x00000008 /* Synchronous updates */ | |
161 | -#define EXT3_IMMUTABLE_FL 0x00000010 /* Immutable file */ | |
162 | -#define EXT3_APPEND_FL 0x00000020 /* writes to file may only append */ | |
163 | -#define EXT3_NODUMP_FL 0x00000040 /* do not dump file */ | |
164 | -#define EXT3_NOATIME_FL 0x00000080 /* do not update atime */ | |
165 | -/* Reserved for compression usage... */ | |
166 | -#define EXT3_DIRTY_FL 0x00000100 | |
167 | -#define EXT3_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ | |
168 | -#define EXT3_NOCOMPR_FL 0x00000400 /* Don't compress */ | |
169 | -#define EXT3_ECOMPR_FL 0x00000800 /* Compression error */ | |
170 | -/* End compression flags --- maybe not all used */ | |
171 | -#define EXT3_INDEX_FL 0x00001000 /* hash-indexed directory */ | |
172 | -#define EXT3_IMAGIC_FL 0x00002000 /* AFS directory */ | |
173 | -#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */ | |
174 | -#define EXT3_NOTAIL_FL 0x00008000 /* file tail should not be merged */ | |
175 | -#define EXT3_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ | |
176 | -#define EXT3_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ | |
177 | -#define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */ | |
178 | - | |
179 | -#define EXT3_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ | |
180 | -#define EXT3_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */ | |
181 | - | |
182 | -/* Flags that should be inherited by new inodes from their parent. */ | |
183 | -#define EXT3_FL_INHERITED (EXT3_SECRM_FL | EXT3_UNRM_FL | EXT3_COMPR_FL |\ | |
184 | - EXT3_SYNC_FL | EXT3_NODUMP_FL |\ | |
185 | - EXT3_NOATIME_FL | EXT3_COMPRBLK_FL |\ | |
186 | - EXT3_NOCOMPR_FL | EXT3_JOURNAL_DATA_FL |\ | |
187 | - EXT3_NOTAIL_FL | EXT3_DIRSYNC_FL) | |
188 | - | |
189 | -/* Flags that are appropriate for regular files (all but dir-specific ones). */ | |
190 | -#define EXT3_REG_FLMASK (~(EXT3_DIRSYNC_FL | EXT3_TOPDIR_FL)) | |
191 | - | |
192 | -/* Flags that are appropriate for non-directories/regular files. */ | |
193 | -#define EXT3_OTHER_FLMASK (EXT3_NODUMP_FL | EXT3_NOATIME_FL) | |
194 | - | |
195 | -/* Mask out flags that are inappropriate for the given type of inode. */ | |
196 | -static inline __u32 ext3_mask_flags(umode_t mode, __u32 flags) | |
197 | -{ | |
198 | - if (S_ISDIR(mode)) | |
199 | - return flags; | |
200 | - else if (S_ISREG(mode)) | |
201 | - return flags & EXT3_REG_FLMASK; | |
202 | - else | |
203 | - return flags & EXT3_OTHER_FLMASK; | |
204 | -} | |
205 | - | |
206 | -/* Used to pass group descriptor data when online resize is done */ | |
207 | -struct ext3_new_group_input { | |
208 | - __u32 group; /* Group number for this data */ | |
209 | - __u32 block_bitmap; /* Absolute block number of block bitmap */ | |
210 | - __u32 inode_bitmap; /* Absolute block number of inode bitmap */ | |
211 | - __u32 inode_table; /* Absolute block number of inode table start */ | |
212 | - __u32 blocks_count; /* Total number of blocks in this group */ | |
213 | - __u16 reserved_blocks; /* Number of reserved blocks in this group */ | |
214 | - __u16 unused; | |
215 | -}; | |
216 | - | |
217 | -/* The struct ext3_new_group_input in kernel space, with free_blocks_count */ | |
218 | -struct ext3_new_group_data { | |
219 | - __u32 group; | |
220 | - __u32 block_bitmap; | |
221 | - __u32 inode_bitmap; | |
222 | - __u32 inode_table; | |
223 | - __u32 blocks_count; | |
224 | - __u16 reserved_blocks; | |
225 | - __u16 unused; | |
226 | - __u32 free_blocks_count; | |
227 | -}; | |
228 | - | |
229 | - | |
230 | -/* | |
231 | - * ioctl commands | |
232 | - */ | |
233 | -#define EXT3_IOC_GETFLAGS FS_IOC_GETFLAGS | |
234 | -#define EXT3_IOC_SETFLAGS FS_IOC_SETFLAGS | |
235 | -#define EXT3_IOC_GETVERSION _IOR('f', 3, long) | |
236 | -#define EXT3_IOC_SETVERSION _IOW('f', 4, long) | |
237 | -#define EXT3_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) | |
238 | -#define EXT3_IOC_GROUP_ADD _IOW('f', 8,struct ext3_new_group_input) | |
239 | -#define EXT3_IOC_GETVERSION_OLD FS_IOC_GETVERSION | |
240 | -#define EXT3_IOC_SETVERSION_OLD FS_IOC_SETVERSION | |
241 | -#ifdef CONFIG_JBD_DEBUG | |
242 | -#define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long) | |
243 | -#endif | |
244 | -#define EXT3_IOC_GETRSVSZ _IOR('f', 5, long) | |
245 | -#define EXT3_IOC_SETRSVSZ _IOW('f', 6, long) | |
246 | - | |
247 | -/* | |
248 | - * ioctl commands in 32 bit emulation | |
249 | - */ | |
250 | -#define EXT3_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
251 | -#define EXT3_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
252 | -#define EXT3_IOC32_GETVERSION _IOR('f', 3, int) | |
253 | -#define EXT3_IOC32_SETVERSION _IOW('f', 4, int) | |
254 | -#define EXT3_IOC32_GETRSVSZ _IOR('f', 5, int) | |
255 | -#define EXT3_IOC32_SETRSVSZ _IOW('f', 6, int) | |
256 | -#define EXT3_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int) | |
257 | -#ifdef CONFIG_JBD_DEBUG | |
258 | -#define EXT3_IOC32_WAIT_FOR_READONLY _IOR('f', 99, int) | |
259 | -#endif | |
260 | -#define EXT3_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION | |
261 | -#define EXT3_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION | |
262 | - | |
263 | - | |
264 | -/* | |
265 | - * Mount options | |
266 | - */ | |
267 | -struct ext3_mount_options { | |
268 | - unsigned long s_mount_opt; | |
269 | - uid_t s_resuid; | |
270 | - gid_t s_resgid; | |
271 | - unsigned long s_commit_interval; | |
272 | -#ifdef CONFIG_QUOTA | |
273 | - int s_jquota_fmt; | |
274 | - char *s_qf_names[MAXQUOTAS]; | |
275 | -#endif | |
276 | -}; | |
277 | - | |
278 | -/* | |
279 | - * Structure of an inode on the disk | |
280 | - */ | |
281 | -struct ext3_inode { | |
282 | - __le16 i_mode; /* File mode */ | |
283 | - __le16 i_uid; /* Low 16 bits of Owner Uid */ | |
284 | - __le32 i_size; /* Size in bytes */ | |
285 | - __le32 i_atime; /* Access time */ | |
286 | - __le32 i_ctime; /* Creation time */ | |
287 | - __le32 i_mtime; /* Modification time */ | |
288 | - __le32 i_dtime; /* Deletion Time */ | |
289 | - __le16 i_gid; /* Low 16 bits of Group Id */ | |
290 | - __le16 i_links_count; /* Links count */ | |
291 | - __le32 i_blocks; /* Blocks count */ | |
292 | - __le32 i_flags; /* File flags */ | |
293 | - union { | |
294 | - struct { | |
295 | - __u32 l_i_reserved1; | |
296 | - } linux1; | |
297 | - struct { | |
298 | - __u32 h_i_translator; | |
299 | - } hurd1; | |
300 | - struct { | |
301 | - __u32 m_i_reserved1; | |
302 | - } masix1; | |
303 | - } osd1; /* OS dependent 1 */ | |
304 | - __le32 i_block[EXT3_N_BLOCKS];/* Pointers to blocks */ | |
305 | - __le32 i_generation; /* File version (for NFS) */ | |
306 | - __le32 i_file_acl; /* File ACL */ | |
307 | - __le32 i_dir_acl; /* Directory ACL */ | |
308 | - __le32 i_faddr; /* Fragment address */ | |
309 | - union { | |
310 | - struct { | |
311 | - __u8 l_i_frag; /* Fragment number */ | |
312 | - __u8 l_i_fsize; /* Fragment size */ | |
313 | - __u16 i_pad1; | |
314 | - __le16 l_i_uid_high; /* these 2 fields */ | |
315 | - __le16 l_i_gid_high; /* were reserved2[0] */ | |
316 | - __u32 l_i_reserved2; | |
317 | - } linux2; | |
318 | - struct { | |
319 | - __u8 h_i_frag; /* Fragment number */ | |
320 | - __u8 h_i_fsize; /* Fragment size */ | |
321 | - __u16 h_i_mode_high; | |
322 | - __u16 h_i_uid_high; | |
323 | - __u16 h_i_gid_high; | |
324 | - __u32 h_i_author; | |
325 | - } hurd2; | |
326 | - struct { | |
327 | - __u8 m_i_frag; /* Fragment number */ | |
328 | - __u8 m_i_fsize; /* Fragment size */ | |
329 | - __u16 m_pad1; | |
330 | - __u32 m_i_reserved2[2]; | |
331 | - } masix2; | |
332 | - } osd2; /* OS dependent 2 */ | |
333 | - __le16 i_extra_isize; | |
334 | - __le16 i_pad1; | |
335 | -}; | |
336 | - | |
337 | -#define i_size_high i_dir_acl | |
338 | - | |
339 | -#if defined(__KERNEL__) || defined(__linux__) | |
340 | -#define i_reserved1 osd1.linux1.l_i_reserved1 | |
341 | -#define i_frag osd2.linux2.l_i_frag | |
342 | -#define i_fsize osd2.linux2.l_i_fsize | |
343 | -#define i_uid_low i_uid | |
344 | -#define i_gid_low i_gid | |
345 | -#define i_uid_high osd2.linux2.l_i_uid_high | |
346 | -#define i_gid_high osd2.linux2.l_i_gid_high | |
347 | -#define i_reserved2 osd2.linux2.l_i_reserved2 | |
348 | - | |
349 | -#elif defined(__GNU__) | |
350 | - | |
351 | -#define i_translator osd1.hurd1.h_i_translator | |
352 | -#define i_frag osd2.hurd2.h_i_frag; | |
353 | -#define i_fsize osd2.hurd2.h_i_fsize; | |
354 | -#define i_uid_high osd2.hurd2.h_i_uid_high | |
355 | -#define i_gid_high osd2.hurd2.h_i_gid_high | |
356 | -#define i_author osd2.hurd2.h_i_author | |
357 | - | |
358 | -#elif defined(__masix__) | |
359 | - | |
360 | -#define i_reserved1 osd1.masix1.m_i_reserved1 | |
361 | -#define i_frag osd2.masix2.m_i_frag | |
362 | -#define i_fsize osd2.masix2.m_i_fsize | |
363 | -#define i_reserved2 osd2.masix2.m_i_reserved2 | |
364 | - | |
365 | -#endif /* defined(__KERNEL__) || defined(__linux__) */ | |
366 | - | |
367 | -/* | |
368 | - * File system states | |
369 | - */ | |
370 | -#define EXT3_VALID_FS 0x0001 /* Unmounted cleanly */ | |
371 | -#define EXT3_ERROR_FS 0x0002 /* Errors detected */ | |
372 | -#define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */ | |
373 | - | |
374 | -/* | |
375 | - * Misc. filesystem flags | |
376 | - */ | |
377 | -#define EXT2_FLAGS_SIGNED_HASH 0x0001 /* Signed dirhash in use */ | |
378 | -#define EXT2_FLAGS_UNSIGNED_HASH 0x0002 /* Unsigned dirhash in use */ | |
379 | -#define EXT2_FLAGS_TEST_FILESYS 0x0004 /* to test development code */ | |
380 | - | |
381 | -/* | |
382 | - * Mount flags | |
383 | - */ | |
384 | -#define EXT3_MOUNT_CHECK 0x00001 /* Do mount-time checks */ | |
385 | -/* EXT3_MOUNT_OLDALLOC was there */ | |
386 | -#define EXT3_MOUNT_GRPID 0x00004 /* Create files with directory's group */ | |
387 | -#define EXT3_MOUNT_DEBUG 0x00008 /* Some debugging messages */ | |
388 | -#define EXT3_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */ | |
389 | -#define EXT3_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */ | |
390 | -#define EXT3_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */ | |
391 | -#define EXT3_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */ | |
392 | -#define EXT3_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/ | |
393 | -#define EXT3_MOUNT_ABORT 0x00200 /* Fatal error detected */ | |
394 | -#define EXT3_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */ | |
395 | -#define EXT3_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */ | |
396 | -#define EXT3_MOUNT_ORDERED_DATA 0x00800 /* Flush data before commit */ | |
397 | -#define EXT3_MOUNT_WRITEBACK_DATA 0x00C00 /* No data ordering */ | |
398 | -#define EXT3_MOUNT_UPDATE_JOURNAL 0x01000 /* Update the journal format */ | |
399 | -#define EXT3_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */ | |
400 | -#define EXT3_MOUNT_XATTR_USER 0x04000 /* Extended user attributes */ | |
401 | -#define EXT3_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */ | |
402 | -#define EXT3_MOUNT_RESERVATION 0x10000 /* Preallocation */ | |
403 | -#define EXT3_MOUNT_BARRIER 0x20000 /* Use block barriers */ | |
404 | -#define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */ | |
405 | -#define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */ | |
406 | -#define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */ | |
407 | -#define EXT3_MOUNT_DATA_ERR_ABORT 0x400000 /* Abort on file data write | |
408 | - * error in ordered mode */ | |
409 | - | |
410 | -/* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */ | |
411 | -#ifndef _LINUX_EXT2_FS_H | |
412 | -#define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt | |
413 | -#define set_opt(o, opt) o |= EXT3_MOUNT_##opt | |
414 | -#define test_opt(sb, opt) (EXT3_SB(sb)->s_mount_opt & \ | |
415 | - EXT3_MOUNT_##opt) | |
416 | -#else | |
417 | -#define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD | |
418 | -#define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT | |
419 | -#define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS | |
420 | -#endif | |
421 | - | |
422 | -#define ext3_set_bit __set_bit_le | |
423 | -#define ext3_set_bit_atomic ext2_set_bit_atomic | |
424 | -#define ext3_clear_bit __clear_bit_le | |
425 | -#define ext3_clear_bit_atomic ext2_clear_bit_atomic | |
426 | -#define ext3_test_bit test_bit_le | |
427 | -#define ext3_find_next_zero_bit find_next_zero_bit_le | |
428 | - | |
429 | -/* | |
430 | - * Maximal mount counts between two filesystem checks | |
431 | - */ | |
432 | -#define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */ | |
433 | -#define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */ | |
434 | - | |
435 | -/* | |
436 | - * Behaviour when detecting errors | |
437 | - */ | |
438 | -#define EXT3_ERRORS_CONTINUE 1 /* Continue execution */ | |
439 | -#define EXT3_ERRORS_RO 2 /* Remount fs read-only */ | |
440 | -#define EXT3_ERRORS_PANIC 3 /* Panic */ | |
441 | -#define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE | |
442 | - | |
443 | -/* | |
444 | - * Structure of the super block | |
445 | - */ | |
446 | -struct ext3_super_block { | |
447 | -/*00*/ __le32 s_inodes_count; /* Inodes count */ | |
448 | - __le32 s_blocks_count; /* Blocks count */ | |
449 | - __le32 s_r_blocks_count; /* Reserved blocks count */ | |
450 | - __le32 s_free_blocks_count; /* Free blocks count */ | |
451 | -/*10*/ __le32 s_free_inodes_count; /* Free inodes count */ | |
452 | - __le32 s_first_data_block; /* First Data Block */ | |
453 | - __le32 s_log_block_size; /* Block size */ | |
454 | - __le32 s_log_frag_size; /* Fragment size */ | |
455 | -/*20*/ __le32 s_blocks_per_group; /* # Blocks per group */ | |
456 | - __le32 s_frags_per_group; /* # Fragments per group */ | |
457 | - __le32 s_inodes_per_group; /* # Inodes per group */ | |
458 | - __le32 s_mtime; /* Mount time */ | |
459 | -/*30*/ __le32 s_wtime; /* Write time */ | |
460 | - __le16 s_mnt_count; /* Mount count */ | |
461 | - __le16 s_max_mnt_count; /* Maximal mount count */ | |
462 | - __le16 s_magic; /* Magic signature */ | |
463 | - __le16 s_state; /* File system state */ | |
464 | - __le16 s_errors; /* Behaviour when detecting errors */ | |
465 | - __le16 s_minor_rev_level; /* minor revision level */ | |
466 | -/*40*/ __le32 s_lastcheck; /* time of last check */ | |
467 | - __le32 s_checkinterval; /* max. time between checks */ | |
468 | - __le32 s_creator_os; /* OS */ | |
469 | - __le32 s_rev_level; /* Revision level */ | |
470 | -/*50*/ __le16 s_def_resuid; /* Default uid for reserved blocks */ | |
471 | - __le16 s_def_resgid; /* Default gid for reserved blocks */ | |
472 | - /* | |
473 | - * These fields are for EXT3_DYNAMIC_REV superblocks only. | |
474 | - * | |
475 | - * Note: the difference between the compatible feature set and | |
476 | - * the incompatible feature set is that if there is a bit set | |
477 | - * in the incompatible feature set that the kernel doesn't | |
478 | - * know about, it should refuse to mount the filesystem. | |
479 | - * | |
480 | - * e2fsck's requirements are more strict; if it doesn't know | |
481 | - * about a feature in either the compatible or incompatible | |
482 | - * feature set, it must abort and not try to meddle with | |
483 | - * things it doesn't understand... | |
484 | - */ | |
485 | - __le32 s_first_ino; /* First non-reserved inode */ | |
486 | - __le16 s_inode_size; /* size of inode structure */ | |
487 | - __le16 s_block_group_nr; /* block group # of this superblock */ | |
488 | - __le32 s_feature_compat; /* compatible feature set */ | |
489 | -/*60*/ __le32 s_feature_incompat; /* incompatible feature set */ | |
490 | - __le32 s_feature_ro_compat; /* readonly-compatible feature set */ | |
491 | -/*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */ | |
492 | -/*78*/ char s_volume_name[16]; /* volume name */ | |
493 | -/*88*/ char s_last_mounted[64]; /* directory where last mounted */ | |
494 | -/*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */ | |
495 | - /* | |
496 | - * Performance hints. Directory preallocation should only | |
497 | - * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on. | |
498 | - */ | |
499 | - __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ | |
500 | - __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ | |
501 | - __le16 s_reserved_gdt_blocks; /* Per group desc for online growth */ | |
502 | - /* | |
503 | - * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set. | |
504 | - */ | |
505 | -/*D0*/ __u8 s_journal_uuid[16]; /* uuid of journal superblock */ | |
506 | -/*E0*/ __le32 s_journal_inum; /* inode number of journal file */ | |
507 | - __le32 s_journal_dev; /* device number of journal file */ | |
508 | - __le32 s_last_orphan; /* start of list of inodes to delete */ | |
509 | - __le32 s_hash_seed[4]; /* HTREE hash seed */ | |
510 | - __u8 s_def_hash_version; /* Default hash version to use */ | |
511 | - __u8 s_reserved_char_pad; | |
512 | - __u16 s_reserved_word_pad; | |
513 | - __le32 s_default_mount_opts; | |
514 | - __le32 s_first_meta_bg; /* First metablock block group */ | |
515 | - __le32 s_mkfs_time; /* When the filesystem was created */ | |
516 | - __le32 s_jnl_blocks[17]; /* Backup of the journal inode */ | |
517 | - /* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */ | |
518 | -/*150*/ __le32 s_blocks_count_hi; /* Blocks count */ | |
519 | - __le32 s_r_blocks_count_hi; /* Reserved blocks count */ | |
520 | - __le32 s_free_blocks_count_hi; /* Free blocks count */ | |
521 | - __le16 s_min_extra_isize; /* All inodes have at least # bytes */ | |
522 | - __le16 s_want_extra_isize; /* New inodes should reserve # bytes */ | |
523 | - __le32 s_flags; /* Miscellaneous flags */ | |
524 | - __le16 s_raid_stride; /* RAID stride */ | |
525 | - __le16 s_mmp_interval; /* # seconds to wait in MMP checking */ | |
526 | - __le64 s_mmp_block; /* Block for multi-mount protection */ | |
527 | - __le32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/ | |
528 | - __u8 s_log_groups_per_flex; /* FLEX_BG group size */ | |
529 | - __u8 s_reserved_char_pad2; | |
530 | - __le16 s_reserved_pad; | |
531 | - __u32 s_reserved[162]; /* Padding to the end of the block */ | |
532 | -}; | |
533 | - | |
534 | -#ifdef __KERNEL__ | |
535 | -#include <linux/ext3_fs_i.h> | |
536 | -#include <linux/ext3_fs_sb.h> | |
537 | -static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb) | |
538 | -{ | |
539 | - return sb->s_fs_info; | |
540 | -} | |
541 | -static inline struct ext3_inode_info *EXT3_I(struct inode *inode) | |
542 | -{ | |
543 | - return container_of(inode, struct ext3_inode_info, vfs_inode); | |
544 | -} | |
545 | - | |
546 | -static inline int ext3_valid_inum(struct super_block *sb, unsigned long ino) | |
547 | -{ | |
548 | - return ino == EXT3_ROOT_INO || | |
549 | - ino == EXT3_JOURNAL_INO || | |
550 | - ino == EXT3_RESIZE_INO || | |
551 | - (ino >= EXT3_FIRST_INO(sb) && | |
552 | - ino <= le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)); | |
553 | -} | |
554 | - | |
555 | -/* | |
556 | - * Inode dynamic state flags | |
557 | - */ | |
558 | -enum { | |
559 | - EXT3_STATE_JDATA, /* journaled data exists */ | |
560 | - EXT3_STATE_NEW, /* inode is newly created */ | |
561 | - EXT3_STATE_XATTR, /* has in-inode xattrs */ | |
562 | - EXT3_STATE_FLUSH_ON_CLOSE, /* flush dirty pages on close */ | |
563 | -}; | |
564 | - | |
565 | -static inline int ext3_test_inode_state(struct inode *inode, int bit) | |
566 | -{ | |
567 | - return test_bit(bit, &EXT3_I(inode)->i_state_flags); | |
568 | -} | |
569 | - | |
570 | -static inline void ext3_set_inode_state(struct inode *inode, int bit) | |
571 | -{ | |
572 | - set_bit(bit, &EXT3_I(inode)->i_state_flags); | |
573 | -} | |
574 | - | |
575 | -static inline void ext3_clear_inode_state(struct inode *inode, int bit) | |
576 | -{ | |
577 | - clear_bit(bit, &EXT3_I(inode)->i_state_flags); | |
578 | -} | |
579 | -#else | |
580 | -/* Assume that user mode programs are passing in an ext3fs superblock, not | |
581 | - * a kernel struct super_block. This will allow us to call the feature-test | |
582 | - * macros from user land. */ | |
583 | -#define EXT3_SB(sb) (sb) | |
584 | -#endif | |
585 | - | |
586 | -#define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime | |
587 | - | |
588 | -/* | |
589 | - * Codes for operating systems | |
590 | - */ | |
591 | -#define EXT3_OS_LINUX 0 | |
592 | -#define EXT3_OS_HURD 1 | |
593 | -#define EXT3_OS_MASIX 2 | |
594 | -#define EXT3_OS_FREEBSD 3 | |
595 | -#define EXT3_OS_LITES 4 | |
596 | - | |
597 | -/* | |
598 | - * Revision levels | |
599 | - */ | |
600 | -#define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */ | |
601 | -#define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ | |
602 | - | |
603 | -#define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV | |
604 | -#define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV | |
605 | - | |
606 | -#define EXT3_GOOD_OLD_INODE_SIZE 128 | |
607 | - | |
608 | -/* | |
609 | - * Feature set definitions | |
610 | - */ | |
611 | - | |
612 | -#define EXT3_HAS_COMPAT_FEATURE(sb,mask) \ | |
613 | - ( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) ) | |
614 | -#define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask) \ | |
615 | - ( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) ) | |
616 | -#define EXT3_HAS_INCOMPAT_FEATURE(sb,mask) \ | |
617 | - ( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) ) | |
618 | -#define EXT3_SET_COMPAT_FEATURE(sb,mask) \ | |
619 | - EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) | |
620 | -#define EXT3_SET_RO_COMPAT_FEATURE(sb,mask) \ | |
621 | - EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) | |
622 | -#define EXT3_SET_INCOMPAT_FEATURE(sb,mask) \ | |
623 | - EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) | |
624 | -#define EXT3_CLEAR_COMPAT_FEATURE(sb,mask) \ | |
625 | - EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) | |
626 | -#define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask) \ | |
627 | - EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) | |
628 | -#define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask) \ | |
629 | - EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) | |
630 | - | |
631 | -#define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001 | |
632 | -#define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002 | |
633 | -#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 | |
634 | -#define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008 | |
635 | -#define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010 | |
636 | -#define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020 | |
637 | - | |
638 | -#define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 | |
639 | -#define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 | |
640 | -#define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 | |
641 | - | |
642 | -#define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001 | |
643 | -#define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002 | |
644 | -#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ | |
645 | -#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */ | |
646 | -#define EXT3_FEATURE_INCOMPAT_META_BG 0x0010 | |
647 | - | |
648 | -#define EXT3_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR | |
649 | -#define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \ | |
650 | - EXT3_FEATURE_INCOMPAT_RECOVER| \ | |
651 | - EXT3_FEATURE_INCOMPAT_META_BG) | |
652 | -#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \ | |
653 | - EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \ | |
654 | - EXT3_FEATURE_RO_COMPAT_BTREE_DIR) | |
655 | - | |
656 | -/* | |
657 | - * Default values for user and/or group using reserved blocks | |
658 | - */ | |
659 | -#define EXT3_DEF_RESUID 0 | |
660 | -#define EXT3_DEF_RESGID 0 | |
661 | - | |
662 | -/* | |
663 | - * Default mount options | |
664 | - */ | |
665 | -#define EXT3_DEFM_DEBUG 0x0001 | |
666 | -#define EXT3_DEFM_BSDGROUPS 0x0002 | |
667 | -#define EXT3_DEFM_XATTR_USER 0x0004 | |
668 | -#define EXT3_DEFM_ACL 0x0008 | |
669 | -#define EXT3_DEFM_UID16 0x0010 | |
670 | -#define EXT3_DEFM_JMODE 0x0060 | |
671 | -#define EXT3_DEFM_JMODE_DATA 0x0020 | |
672 | -#define EXT3_DEFM_JMODE_ORDERED 0x0040 | |
673 | -#define EXT3_DEFM_JMODE_WBACK 0x0060 | |
674 | - | |
675 | -/* | |
676 | - * Structure of a directory entry | |
677 | - */ | |
678 | -#define EXT3_NAME_LEN 255 | |
679 | - | |
680 | -struct ext3_dir_entry { | |
681 | - __le32 inode; /* Inode number */ | |
682 | - __le16 rec_len; /* Directory entry length */ | |
683 | - __le16 name_len; /* Name length */ | |
684 | - char name[EXT3_NAME_LEN]; /* File name */ | |
685 | -}; | |
686 | - | |
687 | -/* | |
688 | - * The new version of the directory entry. Since EXT3 structures are | |
689 | - * stored in intel byte order, and the name_len field could never be | |
690 | - * bigger than 255 chars, it's safe to reclaim the extra byte for the | |
691 | - * file_type field. | |
692 | - */ | |
693 | -struct ext3_dir_entry_2 { | |
694 | - __le32 inode; /* Inode number */ | |
695 | - __le16 rec_len; /* Directory entry length */ | |
696 | - __u8 name_len; /* Name length */ | |
697 | - __u8 file_type; | |
698 | - char name[EXT3_NAME_LEN]; /* File name */ | |
699 | -}; | |
700 | - | |
701 | -/* | |
702 | - * Ext3 directory file types. Only the low 3 bits are used. The | |
703 | - * other bits are reserved for now. | |
704 | - */ | |
705 | -#define EXT3_FT_UNKNOWN 0 | |
706 | -#define EXT3_FT_REG_FILE 1 | |
707 | -#define EXT3_FT_DIR 2 | |
708 | -#define EXT3_FT_CHRDEV 3 | |
709 | -#define EXT3_FT_BLKDEV 4 | |
710 | -#define EXT3_FT_FIFO 5 | |
711 | -#define EXT3_FT_SOCK 6 | |
712 | -#define EXT3_FT_SYMLINK 7 | |
713 | - | |
714 | -#define EXT3_FT_MAX 8 | |
715 | - | |
716 | -/* | |
717 | - * EXT3_DIR_PAD defines the directory entries boundaries | |
718 | - * | |
719 | - * NOTE: It must be a multiple of 4 | |
720 | - */ | |
721 | -#define EXT3_DIR_PAD 4 | |
722 | -#define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1) | |
723 | -#define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \ | |
724 | - ~EXT3_DIR_ROUND) | |
725 | -#define EXT3_MAX_REC_LEN ((1<<16)-1) | |
726 | - | |
727 | -/* | |
728 | - * Tests against MAX_REC_LEN etc were put in place for 64k block | |
729 | - * sizes; if that is not possible on this arch, we can skip | |
730 | - * those tests and speed things up. | |
731 | - */ | |
732 | -static inline unsigned ext3_rec_len_from_disk(__le16 dlen) | |
733 | -{ | |
734 | - unsigned len = le16_to_cpu(dlen); | |
735 | - | |
736 | -#if (PAGE_CACHE_SIZE >= 65536) | |
737 | - if (len == EXT3_MAX_REC_LEN) | |
738 | - return 1 << 16; | |
739 | -#endif | |
740 | - return len; | |
741 | -} | |
742 | - | |
743 | -static inline __le16 ext3_rec_len_to_disk(unsigned len) | |
744 | -{ | |
745 | -#if (PAGE_CACHE_SIZE >= 65536) | |
746 | - if (len == (1 << 16)) | |
747 | - return cpu_to_le16(EXT3_MAX_REC_LEN); | |
748 | - else if (len > (1 << 16)) | |
749 | - BUG(); | |
750 | -#endif | |
751 | - return cpu_to_le16(len); | |
752 | -} | |
753 | - | |
754 | -/* | |
755 | - * Hash Tree Directory indexing | |
756 | - * (c) Daniel Phillips, 2001 | |
757 | - */ | |
758 | - | |
759 | -#define is_dx(dir) (EXT3_HAS_COMPAT_FEATURE(dir->i_sb, \ | |
760 | - EXT3_FEATURE_COMPAT_DIR_INDEX) && \ | |
761 | - (EXT3_I(dir)->i_flags & EXT3_INDEX_FL)) | |
762 | -#define EXT3_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT3_LINK_MAX) | |
763 | -#define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1) | |
764 | - | |
765 | -/* Legal values for the dx_root hash_version field: */ | |
766 | - | |
767 | -#define DX_HASH_LEGACY 0 | |
768 | -#define DX_HASH_HALF_MD4 1 | |
769 | -#define DX_HASH_TEA 2 | |
770 | -#define DX_HASH_LEGACY_UNSIGNED 3 | |
771 | -#define DX_HASH_HALF_MD4_UNSIGNED 4 | |
772 | -#define DX_HASH_TEA_UNSIGNED 5 | |
773 | - | |
774 | -#ifdef __KERNEL__ | |
775 | - | |
776 | -/* hash info structure used by the directory hash */ | |
777 | -struct dx_hash_info | |
778 | -{ | |
779 | - u32 hash; | |
780 | - u32 minor_hash; | |
781 | - int hash_version; | |
782 | - u32 *seed; | |
783 | -}; | |
784 | - | |
785 | -#define EXT3_HTREE_EOF 0x7fffffff | |
786 | - | |
787 | -/* | |
788 | - * Control parameters used by ext3_htree_next_block | |
789 | - */ | |
790 | -#define HASH_NB_ALWAYS 1 | |
791 | - | |
792 | - | |
793 | -/* | |
794 | - * Describe an inode's exact location on disk and in memory | |
795 | - */ | |
796 | -struct ext3_iloc | |
797 | -{ | |
798 | - struct buffer_head *bh; | |
799 | - unsigned long offset; | |
800 | - unsigned long block_group; | |
801 | -}; | |
802 | - | |
803 | -static inline struct ext3_inode *ext3_raw_inode(struct ext3_iloc *iloc) | |
804 | -{ | |
805 | - return (struct ext3_inode *) (iloc->bh->b_data + iloc->offset); | |
806 | -} | |
807 | - | |
808 | -/* | |
809 | - * This structure is stuffed into the struct file's private_data field | |
810 | - * for directories. It is where we put information so that we can do | |
811 | - * readdir operations in hash tree order. | |
812 | - */ | |
813 | -struct dir_private_info { | |
814 | - struct rb_root root; | |
815 | - struct rb_node *curr_node; | |
816 | - struct fname *extra_fname; | |
817 | - loff_t last_pos; | |
818 | - __u32 curr_hash; | |
819 | - __u32 curr_minor_hash; | |
820 | - __u32 next_hash; | |
821 | -}; | |
822 | - | |
823 | -/* calculate the first block number of the group */ | |
824 | -static inline ext3_fsblk_t | |
825 | -ext3_group_first_block_no(struct super_block *sb, unsigned long group_no) | |
826 | -{ | |
827 | - return group_no * (ext3_fsblk_t)EXT3_BLOCKS_PER_GROUP(sb) + | |
828 | - le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block); | |
829 | -} | |
830 | - | |
831 | -/* | |
832 | - * Special error return code only used by dx_probe() and its callers. | |
833 | - */ | |
834 | -#define ERR_BAD_DX_DIR -75000 | |
835 | - | |
836 | -/* | |
837 | - * Function prototypes | |
838 | - */ | |
839 | - | |
840 | -/* | |
841 | - * Ok, these declarations are also in <linux/kernel.h> but none of the | |
842 | - * ext3 source programs needs to include it so they are duplicated here. | |
843 | - */ | |
844 | -# define NORET_TYPE /**/ | |
845 | -# define ATTRIB_NORET __attribute__((noreturn)) | |
846 | -# define NORET_AND noreturn, | |
847 | - | |
848 | -/* balloc.c */ | |
849 | -extern int ext3_bg_has_super(struct super_block *sb, int group); | |
850 | -extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group); | |
851 | -extern ext3_fsblk_t ext3_new_block (handle_t *handle, struct inode *inode, | |
852 | - ext3_fsblk_t goal, int *errp); | |
853 | -extern ext3_fsblk_t ext3_new_blocks (handle_t *handle, struct inode *inode, | |
854 | - ext3_fsblk_t goal, unsigned long *count, int *errp); | |
855 | -extern void ext3_free_blocks (handle_t *handle, struct inode *inode, | |
856 | - ext3_fsblk_t block, unsigned long count); | |
857 | -extern void ext3_free_blocks_sb (handle_t *handle, struct super_block *sb, | |
858 | - ext3_fsblk_t block, unsigned long count, | |
859 | - unsigned long *pdquot_freed_blocks); | |
860 | -extern ext3_fsblk_t ext3_count_free_blocks (struct super_block *); | |
861 | -extern void ext3_check_blocks_bitmap (struct super_block *); | |
862 | -extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb, | |
863 | - unsigned int block_group, | |
864 | - struct buffer_head ** bh); | |
865 | -extern int ext3_should_retry_alloc(struct super_block *sb, int *retries); | |
866 | -extern void ext3_init_block_alloc_info(struct inode *); | |
867 | -extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv); | |
868 | -extern int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range); | |
869 | - | |
870 | -/* dir.c */ | |
871 | -extern int ext3_check_dir_entry(const char *, struct inode *, | |
872 | - struct ext3_dir_entry_2 *, | |
873 | - struct buffer_head *, unsigned long); | |
874 | -extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash, | |
875 | - __u32 minor_hash, | |
876 | - struct ext3_dir_entry_2 *dirent); | |
877 | -extern void ext3_htree_free_dir_info(struct dir_private_info *p); | |
878 | - | |
879 | -/* fsync.c */ | |
880 | -extern int ext3_sync_file(struct file *, loff_t, loff_t, int); | |
881 | - | |
882 | -/* hash.c */ | |
883 | -extern int ext3fs_dirhash(const char *name, int len, struct | |
884 | - dx_hash_info *hinfo); | |
885 | - | |
886 | -/* ialloc.c */ | |
887 | -extern struct inode * ext3_new_inode (handle_t *, struct inode *, | |
888 | - const struct qstr *, umode_t); | |
889 | -extern void ext3_free_inode (handle_t *, struct inode *); | |
890 | -extern struct inode * ext3_orphan_get (struct super_block *, unsigned long); | |
891 | -extern unsigned long ext3_count_free_inodes (struct super_block *); | |
892 | -extern unsigned long ext3_count_dirs (struct super_block *); | |
893 | -extern void ext3_check_inodes_bitmap (struct super_block *); | |
894 | -extern unsigned long ext3_count_free (struct buffer_head *, unsigned); | |
895 | - | |
896 | - | |
897 | -/* inode.c */ | |
898 | -int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode, | |
899 | - struct buffer_head *bh, ext3_fsblk_t blocknr); | |
900 | -struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *); | |
901 | -struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *); | |
902 | -int ext3_get_blocks_handle(handle_t *handle, struct inode *inode, | |
903 | - sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result, | |
904 | - int create); | |
905 | - | |
906 | -extern struct inode *ext3_iget(struct super_block *, unsigned long); | |
907 | -extern int ext3_write_inode (struct inode *, struct writeback_control *); | |
908 | -extern int ext3_setattr (struct dentry *, struct iattr *); | |
909 | -extern void ext3_evict_inode (struct inode *); | |
910 | -extern int ext3_sync_inode (handle_t *, struct inode *); | |
911 | -extern void ext3_discard_reservation (struct inode *); | |
912 | -extern void ext3_dirty_inode(struct inode *, int); | |
913 | -extern int ext3_change_inode_journal_flag(struct inode *, int); | |
914 | -extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *); | |
915 | -extern int ext3_can_truncate(struct inode *inode); | |
916 | -extern void ext3_truncate(struct inode *inode); | |
917 | -extern void ext3_set_inode_flags(struct inode *); | |
918 | -extern void ext3_get_inode_flags(struct ext3_inode_info *); | |
919 | -extern void ext3_set_aops(struct inode *inode); | |
920 | -extern int ext3_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, | |
921 | - u64 start, u64 len); | |
922 | - | |
923 | -/* ioctl.c */ | |
924 | -extern long ext3_ioctl(struct file *, unsigned int, unsigned long); | |
925 | -extern long ext3_compat_ioctl(struct file *, unsigned int, unsigned long); | |
926 | - | |
927 | -/* namei.c */ | |
928 | -extern int ext3_orphan_add(handle_t *, struct inode *); | |
929 | -extern int ext3_orphan_del(handle_t *, struct inode *); | |
930 | -extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash, | |
931 | - __u32 start_minor_hash, __u32 *next_hash); | |
932 | - | |
933 | -/* resize.c */ | |
934 | -extern int ext3_group_add(struct super_block *sb, | |
935 | - struct ext3_new_group_data *input); | |
936 | -extern int ext3_group_extend(struct super_block *sb, | |
937 | - struct ext3_super_block *es, | |
938 | - ext3_fsblk_t n_blocks_count); | |
939 | - | |
940 | -/* super.c */ | |
941 | -extern __printf(3, 4) | |
942 | -void ext3_error(struct super_block *, const char *, const char *, ...); | |
943 | -extern void __ext3_std_error (struct super_block *, const char *, int); | |
944 | -extern __printf(3, 4) | |
945 | -void ext3_abort(struct super_block *, const char *, const char *, ...); | |
946 | -extern __printf(3, 4) | |
947 | -void ext3_warning(struct super_block *, const char *, const char *, ...); | |
948 | -extern __printf(3, 4) | |
949 | -void ext3_msg(struct super_block *, const char *, const char *, ...); | |
950 | -extern void ext3_update_dynamic_rev (struct super_block *sb); | |
951 | - | |
952 | -#define ext3_std_error(sb, errno) \ | |
953 | -do { \ | |
954 | - if ((errno)) \ | |
955 | - __ext3_std_error((sb), __func__, (errno)); \ | |
956 | -} while (0) | |
957 | - | |
958 | -/* | |
959 | - * Inodes and files operations | |
960 | - */ | |
961 | - | |
962 | -/* dir.c */ | |
963 | -extern const struct file_operations ext3_dir_operations; | |
964 | - | |
965 | -/* file.c */ | |
966 | -extern const struct inode_operations ext3_file_inode_operations; | |
967 | -extern const struct file_operations ext3_file_operations; | |
968 | - | |
969 | -/* namei.c */ | |
970 | -extern const struct inode_operations ext3_dir_inode_operations; | |
971 | -extern const struct inode_operations ext3_special_inode_operations; | |
972 | - | |
973 | -/* symlink.c */ | |
974 | -extern const struct inode_operations ext3_symlink_inode_operations; | |
975 | -extern const struct inode_operations ext3_fast_symlink_inode_operations; | |
976 | - | |
977 | - | |
978 | -#endif /* __KERNEL__ */ | |
979 | - | |
980 | -#endif /* _LINUX_EXT3_FS_H */ |
include/linux/ext3_fs_i.h
1 | -/* | |
2 | - * linux/include/linux/ext3_fs_i.h | |
3 | - * | |
4 | - * Copyright (C) 1992, 1993, 1994, 1995 | |
5 | - * Remy Card (card@masi.ibp.fr) | |
6 | - * Laboratoire MASI - Institut Blaise Pascal | |
7 | - * Universite Pierre et Marie Curie (Paris VI) | |
8 | - * | |
9 | - * from | |
10 | - * | |
11 | - * linux/include/linux/minix_fs_i.h | |
12 | - * | |
13 | - * Copyright (C) 1991, 1992 Linus Torvalds | |
14 | - */ | |
15 | - | |
16 | -#ifndef _LINUX_EXT3_FS_I | |
17 | -#define _LINUX_EXT3_FS_I | |
18 | - | |
19 | -#include <linux/rwsem.h> | |
20 | -#include <linux/rbtree.h> | |
21 | -#include <linux/seqlock.h> | |
22 | -#include <linux/mutex.h> | |
23 | - | |
24 | -/* data type for block offset of block group */ | |
25 | -typedef int ext3_grpblk_t; | |
26 | - | |
27 | -/* data type for filesystem-wide blocks number */ | |
28 | -typedef unsigned long ext3_fsblk_t; | |
29 | - | |
30 | -#define E3FSBLK "%lu" | |
31 | - | |
32 | -struct ext3_reserve_window { | |
33 | - ext3_fsblk_t _rsv_start; /* First byte reserved */ | |
34 | - ext3_fsblk_t _rsv_end; /* Last byte reserved or 0 */ | |
35 | -}; | |
36 | - | |
37 | -struct ext3_reserve_window_node { | |
38 | - struct rb_node rsv_node; | |
39 | - __u32 rsv_goal_size; | |
40 | - __u32 rsv_alloc_hit; | |
41 | - struct ext3_reserve_window rsv_window; | |
42 | -}; | |
43 | - | |
44 | -struct ext3_block_alloc_info { | |
45 | - /* information about reservation window */ | |
46 | - struct ext3_reserve_window_node rsv_window_node; | |
47 | - /* | |
48 | - * was i_next_alloc_block in ext3_inode_info | |
49 | - * is the logical (file-relative) number of the | |
50 | - * most-recently-allocated block in this file. | |
51 | - * We use this for detecting linearly ascending allocation requests. | |
52 | - */ | |
53 | - __u32 last_alloc_logical_block; | |
54 | - /* | |
55 | - * Was i_next_alloc_goal in ext3_inode_info | |
56 | - * is the *physical* companion to i_next_alloc_block. | |
57 | - * it the physical block number of the block which was most-recentl | |
58 | - * allocated to this file. This give us the goal (target) for the next | |
59 | - * allocation when we detect linearly ascending requests. | |
60 | - */ | |
61 | - ext3_fsblk_t last_alloc_physical_block; | |
62 | -}; | |
63 | - | |
64 | -#define rsv_start rsv_window._rsv_start | |
65 | -#define rsv_end rsv_window._rsv_end | |
66 | - | |
67 | -/* | |
68 | - * third extended file system inode data in memory | |
69 | - */ | |
70 | -struct ext3_inode_info { | |
71 | - __le32 i_data[15]; /* unconverted */ | |
72 | - __u32 i_flags; | |
73 | -#ifdef EXT3_FRAGMENTS | |
74 | - __u32 i_faddr; | |
75 | - __u8 i_frag_no; | |
76 | - __u8 i_frag_size; | |
77 | -#endif | |
78 | - ext3_fsblk_t i_file_acl; | |
79 | - __u32 i_dir_acl; | |
80 | - __u32 i_dtime; | |
81 | - | |
82 | - /* | |
83 | - * i_block_group is the number of the block group which contains | |
84 | - * this file's inode. Constant across the lifetime of the inode, | |
85 | - * it is ued for making block allocation decisions - we try to | |
86 | - * place a file's data blocks near its inode block, and new inodes | |
87 | - * near to their parent directory's inode. | |
88 | - */ | |
89 | - __u32 i_block_group; | |
90 | - unsigned long i_state_flags; /* Dynamic state flags for ext3 */ | |
91 | - | |
92 | - /* block reservation info */ | |
93 | - struct ext3_block_alloc_info *i_block_alloc_info; | |
94 | - | |
95 | - __u32 i_dir_start_lookup; | |
96 | -#ifdef CONFIG_EXT3_FS_XATTR | |
97 | - /* | |
98 | - * Extended attributes can be read independently of the main file | |
99 | - * data. Taking i_mutex even when reading would cause contention | |
100 | - * between readers of EAs and writers of regular file data, so | |
101 | - * instead we synchronize on xattr_sem when reading or changing | |
102 | - * EAs. | |
103 | - */ | |
104 | - struct rw_semaphore xattr_sem; | |
105 | -#endif | |
106 | - | |
107 | - struct list_head i_orphan; /* unlinked but open inodes */ | |
108 | - | |
109 | - /* | |
110 | - * i_disksize keeps track of what the inode size is ON DISK, not | |
111 | - * in memory. During truncate, i_size is set to the new size by | |
112 | - * the VFS prior to calling ext3_truncate(), but the filesystem won't | |
113 | - * set i_disksize to 0 until the truncate is actually under way. | |
114 | - * | |
115 | - * The intent is that i_disksize always represents the blocks which | |
116 | - * are used by this file. This allows recovery to restart truncate | |
117 | - * on orphans if we crash during truncate. We actually write i_disksize | |
118 | - * into the on-disk inode when writing inodes out, instead of i_size. | |
119 | - * | |
120 | - * The only time when i_disksize and i_size may be different is when | |
121 | - * a truncate is in progress. The only things which change i_disksize | |
122 | - * are ext3_get_block (growth) and ext3_truncate (shrinkth). | |
123 | - */ | |
124 | - loff_t i_disksize; | |
125 | - | |
126 | - /* on-disk additional length */ | |
127 | - __u16 i_extra_isize; | |
128 | - | |
129 | - /* | |
130 | - * truncate_mutex is for serialising ext3_truncate() against | |
131 | - * ext3_getblock(). In the 2.4 ext2 design, great chunks of inode's | |
132 | - * data tree are chopped off during truncate. We can't do that in | |
133 | - * ext3 because whenever we perform intermediate commits during | |
134 | - * truncate, the inode and all the metadata blocks *must* be in a | |
135 | - * consistent state which allows truncation of the orphans to restart | |
136 | - * during recovery. Hence we must fix the get_block-vs-truncate race | |
137 | - * by other means, so we have truncate_mutex. | |
138 | - */ | |
139 | - struct mutex truncate_mutex; | |
140 | - | |
141 | - /* | |
142 | - * Transactions that contain inode's metadata needed to complete | |
143 | - * fsync and fdatasync, respectively. | |
144 | - */ | |
145 | - atomic_t i_sync_tid; | |
146 | - atomic_t i_datasync_tid; | |
147 | - | |
148 | - struct inode vfs_inode; | |
149 | -}; | |
150 | - | |
151 | -#endif /* _LINUX_EXT3_FS_I */ |
include/linux/ext3_fs_sb.h
1 | -/* | |
2 | - * linux/include/linux/ext3_fs_sb.h | |
3 | - * | |
4 | - * Copyright (C) 1992, 1993, 1994, 1995 | |
5 | - * Remy Card (card@masi.ibp.fr) | |
6 | - * Laboratoire MASI - Institut Blaise Pascal | |
7 | - * Universite Pierre et Marie Curie (Paris VI) | |
8 | - * | |
9 | - * from | |
10 | - * | |
11 | - * linux/include/linux/minix_fs_sb.h | |
12 | - * | |
13 | - * Copyright (C) 1991, 1992 Linus Torvalds | |
14 | - */ | |
15 | - | |
16 | -#ifndef _LINUX_EXT3_FS_SB | |
17 | -#define _LINUX_EXT3_FS_SB | |
18 | - | |
19 | -#ifdef __KERNEL__ | |
20 | -#include <linux/timer.h> | |
21 | -#include <linux/wait.h> | |
22 | -#include <linux/blockgroup_lock.h> | |
23 | -#include <linux/percpu_counter.h> | |
24 | -#endif | |
25 | -#include <linux/rbtree.h> | |
26 | - | |
27 | -/* | |
28 | - * third extended-fs super-block data in memory | |
29 | - */ | |
30 | -struct ext3_sb_info { | |
31 | - unsigned long s_frag_size; /* Size of a fragment in bytes */ | |
32 | - unsigned long s_frags_per_block;/* Number of fragments per block */ | |
33 | - unsigned long s_inodes_per_block;/* Number of inodes per block */ | |
34 | - unsigned long s_frags_per_group;/* Number of fragments in a group */ | |
35 | - unsigned long s_blocks_per_group;/* Number of blocks in a group */ | |
36 | - unsigned long s_inodes_per_group;/* Number of inodes in a group */ | |
37 | - unsigned long s_itb_per_group; /* Number of inode table blocks per group */ | |
38 | - unsigned long s_gdb_count; /* Number of group descriptor blocks */ | |
39 | - unsigned long s_desc_per_block; /* Number of group descriptors per block */ | |
40 | - unsigned long s_groups_count; /* Number of groups in the fs */ | |
41 | - unsigned long s_overhead_last; /* Last calculated overhead */ | |
42 | - unsigned long s_blocks_last; /* Last seen block count */ | |
43 | - struct buffer_head * s_sbh; /* Buffer containing the super block */ | |
44 | - struct ext3_super_block * s_es; /* Pointer to the super block in the buffer */ | |
45 | - struct buffer_head ** s_group_desc; | |
46 | - unsigned long s_mount_opt; | |
47 | - ext3_fsblk_t s_sb_block; | |
48 | - uid_t s_resuid; | |
49 | - gid_t s_resgid; | |
50 | - unsigned short s_mount_state; | |
51 | - unsigned short s_pad; | |
52 | - int s_addr_per_block_bits; | |
53 | - int s_desc_per_block_bits; | |
54 | - int s_inode_size; | |
55 | - int s_first_ino; | |
56 | - spinlock_t s_next_gen_lock; | |
57 | - u32 s_next_generation; | |
58 | - u32 s_hash_seed[4]; | |
59 | - int s_def_hash_version; | |
60 | - int s_hash_unsigned; /* 3 if hash should be signed, 0 if not */ | |
61 | - struct percpu_counter s_freeblocks_counter; | |
62 | - struct percpu_counter s_freeinodes_counter; | |
63 | - struct percpu_counter s_dirs_counter; | |
64 | - struct blockgroup_lock *s_blockgroup_lock; | |
65 | - | |
66 | - /* root of the per fs reservation window tree */ | |
67 | - spinlock_t s_rsv_window_lock; | |
68 | - struct rb_root s_rsv_window_root; | |
69 | - struct ext3_reserve_window_node s_rsv_window_head; | |
70 | - | |
71 | - /* Journaling */ | |
72 | - struct inode * s_journal_inode; | |
73 | - struct journal_s * s_journal; | |
74 | - struct list_head s_orphan; | |
75 | - struct mutex s_orphan_lock; | |
76 | - struct mutex s_resize_lock; | |
77 | - unsigned long s_commit_interval; | |
78 | - struct block_device *journal_bdev; | |
79 | -#ifdef CONFIG_QUOTA | |
80 | - char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */ | |
81 | - int s_jquota_fmt; /* Format of quota to use */ | |
82 | -#endif | |
83 | -}; | |
84 | - | |
85 | -static inline spinlock_t * | |
86 | -sb_bgl_lock(struct ext3_sb_info *sbi, unsigned int block_group) | |
87 | -{ | |
88 | - return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group); | |
89 | -} | |
90 | - | |
91 | -#endif /* _LINUX_EXT3_FS_SB */ |
include/linux/ext3_jbd.h
1 | -/* | |
2 | - * linux/include/linux/ext3_jbd.h | |
3 | - * | |
4 | - * Written by Stephen C. Tweedie <sct@redhat.com>, 1999 | |
5 | - * | |
6 | - * Copyright 1998--1999 Red Hat corp --- All Rights Reserved | |
7 | - * | |
8 | - * This file is part of the Linux kernel and is made available under | |
9 | - * the terms of the GNU General Public License, version 2, or at your | |
10 | - * option, any later version, incorporated herein by reference. | |
11 | - * | |
12 | - * Ext3-specific journaling extensions. | |
13 | - */ | |
14 | - | |
15 | -#ifndef _LINUX_EXT3_JBD_H | |
16 | -#define _LINUX_EXT3_JBD_H | |
17 | - | |
18 | -#include <linux/fs.h> | |
19 | -#include <linux/jbd.h> | |
20 | -#include <linux/ext3_fs.h> | |
21 | - | |
22 | -#define EXT3_JOURNAL(inode) (EXT3_SB((inode)->i_sb)->s_journal) | |
23 | - | |
24 | -/* Define the number of blocks we need to account to a transaction to | |
25 | - * modify one block of data. | |
26 | - * | |
27 | - * We may have to touch one inode, one bitmap buffer, up to three | |
28 | - * indirection blocks, the group and superblock summaries, and the data | |
29 | - * block to complete the transaction. */ | |
30 | - | |
31 | -#define EXT3_SINGLEDATA_TRANS_BLOCKS 8U | |
32 | - | |
33 | -/* Extended attribute operations touch at most two data buffers, | |
34 | - * two bitmap buffers, and two group summaries, in addition to the inode | |
35 | - * and the superblock, which are already accounted for. */ | |
36 | - | |
37 | -#define EXT3_XATTR_TRANS_BLOCKS 6U | |
38 | - | |
39 | -/* Define the minimum size for a transaction which modifies data. This | |
40 | - * needs to take into account the fact that we may end up modifying two | |
41 | - * quota files too (one for the group, one for the user quota). The | |
42 | - * superblock only gets updated once, of course, so don't bother | |
43 | - * counting that again for the quota updates. */ | |
44 | - | |
45 | -#define EXT3_DATA_TRANS_BLOCKS(sb) (EXT3_SINGLEDATA_TRANS_BLOCKS + \ | |
46 | - EXT3_XATTR_TRANS_BLOCKS - 2 + \ | |
47 | - EXT3_MAXQUOTAS_TRANS_BLOCKS(sb)) | |
48 | - | |
49 | -/* Delete operations potentially hit one directory's namespace plus an | |
50 | - * entire inode, plus arbitrary amounts of bitmap/indirection data. Be | |
51 | - * generous. We can grow the delete transaction later if necessary. */ | |
52 | - | |
53 | -#define EXT3_DELETE_TRANS_BLOCKS(sb) (EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) + 64) | |
54 | - | |
55 | -/* Define an arbitrary limit for the amount of data we will anticipate | |
56 | - * writing to any given transaction. For unbounded transactions such as | |
57 | - * write(2) and truncate(2) we can write more than this, but we always | |
58 | - * start off at the maximum transaction size and grow the transaction | |
59 | - * optimistically as we go. */ | |
60 | - | |
61 | -#define EXT3_MAX_TRANS_DATA 64U | |
62 | - | |
63 | -/* We break up a large truncate or write transaction once the handle's | |
64 | - * buffer credits gets this low, we need either to extend the | |
65 | - * transaction or to start a new one. Reserve enough space here for | |
66 | - * inode, bitmap, superblock, group and indirection updates for at least | |
67 | - * one block, plus two quota updates. Quota allocations are not | |
68 | - * needed. */ | |
69 | - | |
70 | -#define EXT3_RESERVE_TRANS_BLOCKS 12U | |
71 | - | |
72 | -#define EXT3_INDEX_EXTRA_TRANS_BLOCKS 8 | |
73 | - | |
74 | -#ifdef CONFIG_QUOTA | |
75 | -/* Amount of blocks needed for quota update - we know that the structure was | |
76 | - * allocated so we need to update only inode+data */ | |
77 | -#define EXT3_QUOTA_TRANS_BLOCKS(sb) (test_opt(sb, QUOTA) ? 2 : 0) | |
78 | -/* Amount of blocks needed for quota insert/delete - we do some block writes | |
79 | - * but inode, sb and group updates are done only once */ | |
80 | -#define EXT3_QUOTA_INIT_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_INIT_ALLOC*\ | |
81 | - (EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_INIT_REWRITE) : 0) | |
82 | -#define EXT3_QUOTA_DEL_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_DEL_ALLOC*\ | |
83 | - (EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_DEL_REWRITE) : 0) | |
84 | -#else | |
85 | -#define EXT3_QUOTA_TRANS_BLOCKS(sb) 0 | |
86 | -#define EXT3_QUOTA_INIT_BLOCKS(sb) 0 | |
87 | -#define EXT3_QUOTA_DEL_BLOCKS(sb) 0 | |
88 | -#endif | |
89 | -#define EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_TRANS_BLOCKS(sb)) | |
90 | -#define EXT3_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_INIT_BLOCKS(sb)) | |
91 | -#define EXT3_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_DEL_BLOCKS(sb)) | |
92 | - | |
93 | -int | |
94 | -ext3_mark_iloc_dirty(handle_t *handle, | |
95 | - struct inode *inode, | |
96 | - struct ext3_iloc *iloc); | |
97 | - | |
98 | -/* | |
99 | - * On success, We end up with an outstanding reference count against | |
100 | - * iloc->bh. This _must_ be cleaned up later. | |
101 | - */ | |
102 | - | |
103 | -int ext3_reserve_inode_write(handle_t *handle, struct inode *inode, | |
104 | - struct ext3_iloc *iloc); | |
105 | - | |
106 | -int ext3_mark_inode_dirty(handle_t *handle, struct inode *inode); | |
107 | - | |
108 | -/* | |
109 | - * Wrapper functions with which ext3 calls into JBD. The intent here is | |
110 | - * to allow these to be turned into appropriate stubs so ext3 can control | |
111 | - * ext2 filesystems, so ext2+ext3 systems only nee one fs. This work hasn't | |
112 | - * been done yet. | |
113 | - */ | |
114 | - | |
115 | -static inline void ext3_journal_release_buffer(handle_t *handle, | |
116 | - struct buffer_head *bh) | |
117 | -{ | |
118 | - journal_release_buffer(handle, bh); | |
119 | -} | |
120 | - | |
121 | -void ext3_journal_abort_handle(const char *caller, const char *err_fn, | |
122 | - struct buffer_head *bh, handle_t *handle, int err); | |
123 | - | |
124 | -int __ext3_journal_get_undo_access(const char *where, handle_t *handle, | |
125 | - struct buffer_head *bh); | |
126 | - | |
127 | -int __ext3_journal_get_write_access(const char *where, handle_t *handle, | |
128 | - struct buffer_head *bh); | |
129 | - | |
130 | -int __ext3_journal_forget(const char *where, handle_t *handle, | |
131 | - struct buffer_head *bh); | |
132 | - | |
133 | -int __ext3_journal_revoke(const char *where, handle_t *handle, | |
134 | - unsigned long blocknr, struct buffer_head *bh); | |
135 | - | |
136 | -int __ext3_journal_get_create_access(const char *where, | |
137 | - handle_t *handle, struct buffer_head *bh); | |
138 | - | |
139 | -int __ext3_journal_dirty_metadata(const char *where, | |
140 | - handle_t *handle, struct buffer_head *bh); | |
141 | - | |
142 | -#define ext3_journal_get_undo_access(handle, bh) \ | |
143 | - __ext3_journal_get_undo_access(__func__, (handle), (bh)) | |
144 | -#define ext3_journal_get_write_access(handle, bh) \ | |
145 | - __ext3_journal_get_write_access(__func__, (handle), (bh)) | |
146 | -#define ext3_journal_revoke(handle, blocknr, bh) \ | |
147 | - __ext3_journal_revoke(__func__, (handle), (blocknr), (bh)) | |
148 | -#define ext3_journal_get_create_access(handle, bh) \ | |
149 | - __ext3_journal_get_create_access(__func__, (handle), (bh)) | |
150 | -#define ext3_journal_dirty_metadata(handle, bh) \ | |
151 | - __ext3_journal_dirty_metadata(__func__, (handle), (bh)) | |
152 | -#define ext3_journal_forget(handle, bh) \ | |
153 | - __ext3_journal_forget(__func__, (handle), (bh)) | |
154 | - | |
155 | -int ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh); | |
156 | - | |
157 | -handle_t *ext3_journal_start_sb(struct super_block *sb, int nblocks); | |
158 | -int __ext3_journal_stop(const char *where, handle_t *handle); | |
159 | - | |
160 | -static inline handle_t *ext3_journal_start(struct inode *inode, int nblocks) | |
161 | -{ | |
162 | - return ext3_journal_start_sb(inode->i_sb, nblocks); | |
163 | -} | |
164 | - | |
165 | -#define ext3_journal_stop(handle) \ | |
166 | - __ext3_journal_stop(__func__, (handle)) | |
167 | - | |
168 | -static inline handle_t *ext3_journal_current_handle(void) | |
169 | -{ | |
170 | - return journal_current_handle(); | |
171 | -} | |
172 | - | |
173 | -static inline int ext3_journal_extend(handle_t *handle, int nblocks) | |
174 | -{ | |
175 | - return journal_extend(handle, nblocks); | |
176 | -} | |
177 | - | |
178 | -static inline int ext3_journal_restart(handle_t *handle, int nblocks) | |
179 | -{ | |
180 | - return journal_restart(handle, nblocks); | |
181 | -} | |
182 | - | |
183 | -static inline int ext3_journal_blocks_per_page(struct inode *inode) | |
184 | -{ | |
185 | - return journal_blocks_per_page(inode); | |
186 | -} | |
187 | - | |
188 | -static inline int ext3_journal_force_commit(journal_t *journal) | |
189 | -{ | |
190 | - return journal_force_commit(journal); | |
191 | -} | |
192 | - | |
193 | -/* super.c */ | |
194 | -int ext3_force_commit(struct super_block *sb); | |
195 | - | |
196 | -static inline int ext3_should_journal_data(struct inode *inode) | |
197 | -{ | |
198 | - if (!S_ISREG(inode->i_mode)) | |
199 | - return 1; | |
200 | - if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA) | |
201 | - return 1; | |
202 | - if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL) | |
203 | - return 1; | |
204 | - return 0; | |
205 | -} | |
206 | - | |
207 | -static inline int ext3_should_order_data(struct inode *inode) | |
208 | -{ | |
209 | - if (!S_ISREG(inode->i_mode)) | |
210 | - return 0; | |
211 | - if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL) | |
212 | - return 0; | |
213 | - if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA) | |
214 | - return 1; | |
215 | - return 0; | |
216 | -} | |
217 | - | |
218 | -static inline int ext3_should_writeback_data(struct inode *inode) | |
219 | -{ | |
220 | - if (!S_ISREG(inode->i_mode)) | |
221 | - return 0; | |
222 | - if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL) | |
223 | - return 0; | |
224 | - if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA) | |
225 | - return 1; | |
226 | - return 0; | |
227 | -} | |
228 | - | |
229 | -#endif /* _LINUX_EXT3_JBD_H */ |