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authorAl Viro <viro@zeniv.linux.org.uk>2012-03-29 22:30:07 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-03-31 16:03:16 -0400
commit4613ad180d19082f99551477dcb13cb23d23661b (patch)
treec90407d53b5e7270c55831e394bd879825e0c6e9 /include
parentf7699f2b0114fcd0ea5ad5f8aa2142f1bcc27fd0 (diff)
ext3: move headers to fs/ext3/
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r--include/linux/ext3_fs.h980
-rw-r--r--include/linux/ext3_fs_i.h151
-rw-r--r--include/linux/ext3_fs_sb.h91
-rw-r--r--include/linux/ext3_jbd.h229
4 files changed, 0 insertions, 1451 deletions
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
deleted file mode 100644
index f5a84eef6ed..00000000000
--- a/include/linux/ext3_fs.h
+++ /dev/null
@@ -1,980 +0,0 @@
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 */
119struct 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. */
196static 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 */
207struct 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 */
218struct 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 */
267struct 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 */
281struct 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 */
446struct 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>
537static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb)
538{
539 return sb->s_fs_info;
540}
541static inline struct ext3_inode_info *EXT3_I(struct inode *inode)
542{
543 return container_of(inode, struct ext3_inode_info, vfs_inode);
544}
545
546static 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 */
558enum {
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
565static 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
570static inline void ext3_set_inode_state(struct inode *inode, int bit)
571{
572 set_bit(bit, &EXT3_I(inode)->i_state_flags);
573}
574
575static 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
680struct 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 */
693struct 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 */
732static 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
743static 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 */
777struct 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 */
796struct ext3_iloc
797{
798 struct buffer_head *bh;
799 unsigned long offset;
800 unsigned long block_group;
801};
802
803static 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 */
813struct 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 */
824static inline ext3_fsblk_t
825ext3_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 */
849extern int ext3_bg_has_super(struct super_block *sb, int group);
850extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group);
851extern ext3_fsblk_t ext3_new_block (handle_t *handle, struct inode *inode,
852 ext3_fsblk_t goal, int *errp);
853extern ext3_fsblk_t ext3_new_blocks (handle_t *handle, struct inode *inode,
854 ext3_fsblk_t goal, unsigned long *count, int *errp);
855extern void ext3_free_blocks (handle_t *handle, struct inode *inode,
856 ext3_fsblk_t block, unsigned long count);
857extern 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);
860extern ext3_fsblk_t ext3_count_free_blocks (struct super_block *);
861extern void ext3_check_blocks_bitmap (struct super_block *);
862extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb,
863 unsigned int block_group,
864 struct buffer_head ** bh);
865extern int ext3_should_retry_alloc(struct super_block *sb, int *retries);
866extern void ext3_init_block_alloc_info(struct inode *);
867extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv);
868extern int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range);
869
870/* dir.c */
871extern int ext3_check_dir_entry(const char *, struct inode *,
872 struct ext3_dir_entry_2 *,
873 struct buffer_head *, unsigned long);
874extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash,
875 __u32 minor_hash,
876 struct ext3_dir_entry_2 *dirent);
877extern void ext3_htree_free_dir_info(struct dir_private_info *p);
878
879/* fsync.c */
880extern int ext3_sync_file(struct file *, loff_t, loff_t, int);
881
882/* hash.c */
883extern int ext3fs_dirhash(const char *name, int len, struct
884 dx_hash_info *hinfo);
885
886/* ialloc.c */
887extern struct inode * ext3_new_inode (handle_t *, struct inode *,
888 const struct qstr *, umode_t);
889extern void ext3_free_inode (handle_t *, struct inode *);
890extern struct inode * ext3_orphan_get (struct super_block *, unsigned long);
891extern unsigned long ext3_count_free_inodes (struct super_block *);
892extern unsigned long ext3_count_dirs (struct super_block *);
893extern void ext3_check_inodes_bitmap (struct super_block *);
894extern unsigned long ext3_count_free (struct buffer_head *, unsigned);
895
896
897/* inode.c */
898int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode,
899 struct buffer_head *bh, ext3_fsblk_t blocknr);
900struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *);
901struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *);
902int 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
906extern struct inode *ext3_iget(struct super_block *, unsigned long);
907extern int ext3_write_inode (struct inode *, struct writeback_control *);
908extern int ext3_setattr (struct dentry *, struct iattr *);
909extern void ext3_evict_inode (struct inode *);
910extern int ext3_sync_inode (handle_t *, struct inode *);
911extern void ext3_discard_reservation (struct inode *);
912extern void ext3_dirty_inode(struct inode *, int);
913extern int ext3_change_inode_journal_flag(struct inode *, int);
914extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *);
915extern int ext3_can_truncate(struct inode *inode);
916extern void ext3_truncate(struct inode *inode);
917extern void ext3_set_inode_flags(struct inode *);
918extern void ext3_get_inode_flags(struct ext3_inode_info *);
919extern void ext3_set_aops(struct inode *inode);
920extern int ext3_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
921 u64 start, u64 len);
922
923/* ioctl.c */
924extern long ext3_ioctl(struct file *, unsigned int, unsigned long);
925extern long ext3_compat_ioctl(struct file *, unsigned int, unsigned long);
926
927/* namei.c */
928extern int ext3_orphan_add(handle_t *, struct inode *);
929extern int ext3_orphan_del(handle_t *, struct inode *);
930extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash,
931 __u32 start_minor_hash, __u32 *next_hash);
932
933/* resize.c */
934extern int ext3_group_add(struct super_block *sb,
935 struct ext3_new_group_data *input);
936extern 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 */
941extern __printf(3, 4)
942void ext3_error(struct super_block *, const char *, const char *, ...);
943extern void __ext3_std_error (struct super_block *, const char *, int);
944extern __printf(3, 4)
945void ext3_abort(struct super_block *, const char *, const char *, ...);
946extern __printf(3, 4)
947void ext3_warning(struct super_block *, const char *, const char *, ...);
948extern __printf(3, 4)
949void ext3_msg(struct super_block *, const char *, const char *, ...);
950extern void ext3_update_dynamic_rev (struct super_block *sb);
951
952#define ext3_std_error(sb, errno) \
953do { \
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 */
963extern const struct file_operations ext3_dir_operations;
964
965/* file.c */
966extern const struct inode_operations ext3_file_inode_operations;
967extern const struct file_operations ext3_file_operations;
968
969/* namei.c */
970extern const struct inode_operations ext3_dir_inode_operations;
971extern const struct inode_operations ext3_special_inode_operations;
972
973/* symlink.c */
974extern const struct inode_operations ext3_symlink_inode_operations;
975extern const struct inode_operations ext3_fast_symlink_inode_operations;
976
977
978#endif /* __KERNEL__ */
979
980#endif /* _LINUX_EXT3_FS_H */
diff --git a/include/linux/ext3_fs_i.h b/include/linux/ext3_fs_i.h
deleted file mode 100644
index f42c098aed8..00000000000
--- a/include/linux/ext3_fs_i.h
+++ /dev/null
@@ -1,151 +0,0 @@
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 */
25typedef int ext3_grpblk_t;
26
27/* data type for filesystem-wide blocks number */
28typedef unsigned long ext3_fsblk_t;
29
30#define E3FSBLK "%lu"
31
32struct 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
37struct 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
44struct 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 */
70struct 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 */
diff --git a/include/linux/ext3_fs_sb.h b/include/linux/ext3_fs_sb.h
deleted file mode 100644
index 64365252f1b..00000000000
--- a/include/linux/ext3_fs_sb.h
+++ /dev/null
@@ -1,91 +0,0 @@
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 */
30struct 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
85static inline spinlock_t *
86sb_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 */
diff --git a/include/linux/ext3_jbd.h b/include/linux/ext3_jbd.h
deleted file mode 100644
index d7b5ddca99c..00000000000
--- a/include/linux/ext3_jbd.h
+++ /dev/null
@@ -1,229 +0,0 @@
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
93int
94ext3_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
103int ext3_reserve_inode_write(handle_t *handle, struct inode *inode,
104 struct ext3_iloc *iloc);
105
106int 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
115static inline void ext3_journal_release_buffer(handle_t *handle,
116 struct buffer_head *bh)
117{
118 journal_release_buffer(handle, bh);
119}
120
121void ext3_journal_abort_handle(const char *caller, const char *err_fn,
122 struct buffer_head *bh, handle_t *handle, int err);
123
124int __ext3_journal_get_undo_access(const char *where, handle_t *handle,
125 struct buffer_head *bh);
126
127int __ext3_journal_get_write_access(const char *where, handle_t *handle,
128 struct buffer_head *bh);
129
130int __ext3_journal_forget(const char *where, handle_t *handle,
131 struct buffer_head *bh);
132
133int __ext3_journal_revoke(const char *where, handle_t *handle,
134 unsigned long blocknr, struct buffer_head *bh);
135
136int __ext3_journal_get_create_access(const char *where,
137 handle_t *handle, struct buffer_head *bh);
138
139int __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
155int ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh);
156
157handle_t *ext3_journal_start_sb(struct super_block *sb, int nblocks);
158int __ext3_journal_stop(const char *where, handle_t *handle);
159
160static 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
168static inline handle_t *ext3_journal_current_handle(void)
169{
170 return journal_current_handle();
171}
172
173static inline int ext3_journal_extend(handle_t *handle, int nblocks)
174{
175 return journal_extend(handle, nblocks);
176}
177
178static inline int ext3_journal_restart(handle_t *handle, int nblocks)
179{
180 return journal_restart(handle, nblocks);
181}
182
183static inline int ext3_journal_blocks_per_page(struct inode *inode)
184{
185 return journal_blocks_per_page(inode);
186}
187
188static inline int ext3_journal_force_commit(journal_t *journal)
189{
190 return journal_force_commit(journal);
191}
192
193/* super.c */
194int ext3_force_commit(struct super_block *sb);
195
196static 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
207static 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
218static 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 */
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-18 19:28:47 -0400