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Diffstat (limited to 'e2fsck/jfs_user.h')
| -rw-r--r-- | e2fsck/jfs_user.h | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/e2fsck/jfs_user.h b/e2fsck/jfs_user.h new file mode 100644 index 0000000..5928a8a --- /dev/null +++ b/e2fsck/jfs_user.h @@ -0,0 +1,321 @@ +/* + * Compatibility header file for e2fsck which should be included + * instead of linux/jfs.h + * + * Copyright (C) 2000 Stephen C. Tweedie + * + * This file may be redistributed under the terms of the + * GNU General Public License version 2 or at your discretion + * any later version. + */ +#ifndef _JFS_USER_H +#define _JFS_USER_H + +#include "config.h" + +#ifdef DEBUGFS +#include <stdio.h> +#include <stdlib.h> +#if EXT2_FLAT_INCLUDES +#include "ext2_fs.h" +#include "ext2fs.h" +#include "blkid.h" +#else +#include "ext2fs/ext2_fs.h" +#include "ext2fs/ext2fs.h" +#include "blkid/blkid.h" +#endif +#else +/* + * Pull in the definition of the e2fsck context structure + */ +#include "e2fsck.h" +#endif + +#if __STDC_VERSION__ < 199901L +# if __GNUC__ >= 2 || _MSC_VER >= 1300 +# define __func__ __FUNCTION__ +# else +# define __func__ "<unknown>" +# endif +#endif + +struct buffer_head { +#ifdef DEBUGFS + ext2_filsys b_fs; +#else + e2fsck_t b_ctx; +#endif + io_channel b_io; + int b_size; + int b_err; + unsigned int b_dirty:1; + unsigned int b_uptodate:1; + unsigned long long b_blocknr; + char b_data[4096]; +}; + +struct inode { +#ifdef DEBUGFS + ext2_filsys i_fs; +#else + e2fsck_t i_ctx; +#endif + ext2_ino_t i_ino; + struct ext2_inode i_ext2; +}; + +struct kdev_s { +#ifdef DEBUGFS + ext2_filsys k_fs; +#else + e2fsck_t k_ctx; +#endif + int k_dev; +}; + +#define K_DEV_FS 1 +#define K_DEV_JOURNAL 2 + +#define lock_buffer(bh) do {} while (0) +#define unlock_buffer(bh) do {} while (0) +#define buffer_req(bh) 1 +#define do_readahead(journal, start) do {} while (0) + +struct kmem_cache { + unsigned int object_size; +}; + +#define cond_resched() do { } while (0) + +#define __init + +/* + * Now pull in the real linux/jfs.h definitions. + */ +#include <ext2fs/kernel-jbd.h> + +/* + * We use the standard libext2fs portability tricks for inline + * functions. + */ +#ifdef NO_INLINE_FUNCS +extern struct kmem_cache *kmem_cache_create(const char *name, + unsigned int size, + unsigned int align, + unsigned int flags, + void (*ctor)(void *)); +extern void kmem_cache_destroy(struct kmem_cache *s); +extern void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags); +extern void kmem_cache_free(struct kmem_cache *s, void *objp); +extern void *kmalloc(size_t size, gfp_t flags); +extern void kfree(const void *objp); +extern size_t journal_tag_bytes(journal_t *journal); +extern __u32 __hash_32(__u32 val); +extern __u32 hash_32(__u32 val, unsigned int bits); +extern __u32 hash_64(__u64 val, unsigned int bits); +extern void *kmalloc_array(unsigned n, unsigned size, int flags); +extern __u32 jbd2_chksum(journal_t *j, __u32 crc, const void *address, + unsigned int length); +extern void jbd2_descriptor_block_csum_set(journal_t *j, + struct buffer_head *bh); +#endif + +#if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) +#ifdef E2FSCK_INCLUDE_INLINE_FUNCS +#if (__STDC_VERSION__ >= 199901L) +#define _INLINE_ extern inline +#else +#define _INLINE_ inline +#endif +#else /* !E2FSCK_INCLUDE_INLINE FUNCS */ +#if (__STDC_VERSION__ >= 199901L) +#define _INLINE_ inline +#else /* not C99 */ +#ifdef __GNUC__ +#define _INLINE_ extern __inline__ +#else /* For Watcom C */ +#define _INLINE_ extern inline +#endif /* __GNUC__ */ +#endif /* __STDC_VERSION__ >= 199901L */ +#endif /* E2FSCK_INCLUDE_INLINE_FUNCS */ + +_INLINE_ struct kmem_cache * +kmem_cache_create(const char *name EXT2FS_ATTR((unused)), + unsigned int size, + unsigned int align EXT2FS_ATTR((unused)), + unsigned int flags EXT2FS_ATTR((unused)), + void (*ctor)(void *) EXT2FS_ATTR((unused))) +{ + struct kmem_cache *new_cache; + + new_cache = malloc(sizeof(*new_cache)); + if (new_cache) + new_cache->object_size = size; + return new_cache; +} + +_INLINE_ void kmem_cache_destroy(struct kmem_cache *s) +{ + free(s); +} + +_INLINE_ void *kmem_cache_alloc(struct kmem_cache *cachep, + gfp_t flags EXT2FS_ATTR((unused))) +{ + return malloc(cachep->object_size); +} + +_INLINE_ void kmem_cache_free(struct kmem_cache *s EXT2FS_ATTR((unused)), + void *objp) +{ + free(objp); +} + +_INLINE_ void *kmalloc(size_t size, gfp_t flags EXT2FS_ATTR((unused))) +{ + return malloc(size); +} + +_INLINE_ void kfree(const void *objp) +{ +#ifdef HAVE_INTPTR_T + /* + * Work around a botch in the C standard, which triggers + * compiler warnings. For better or for worse, the kernel + * uses const void * for kfree, while the C standard mandates + * the use of void *. See: https://yarchive.net/comp/const.html + */ + free((void *)(intptr_t)objp); +#else + free((void *)objp); +#endif +} + +/* generic hashing taken from the Linux kernel */ +#define GOLDEN_RATIO_32 0x61C88647 +#define GOLDEN_RATIO_64 0x61C8864680B583EBull + +_INLINE_ __u32 __hash_32(__u32 val) +{ + return val * GOLDEN_RATIO_32; +} + +_INLINE_ __u32 hash_32(__u32 val, unsigned int bits) +{ + /* High bits are more random, so use them. */ + return __hash_32(val) >> (32 - bits); +} + +_INLINE_ __u32 hash_64(__u64 val, unsigned int bits) +{ + if (sizeof(long) >= 8) { + /* 64x64-bit multiply is efficient on all 64-bit processors */ + return val * GOLDEN_RATIO_64 >> (64 - bits); + } else { + /* Hash 64 bits using only 32x32-bit multiply. */ + return hash_32((__u32)val ^ __hash_32(val >> 32), bits); + } +} + +_INLINE_ void *kmalloc_array(unsigned n, unsigned size, + int flags EXT2FS_ATTR((unused))) +{ + if (n && (~0U)/n < size) + return NULL; + return malloc(n * size); +} + +_INLINE_ __u32 jbd2_chksum(journal_t *j EXT2FS_ATTR((unused)), + __u32 crc, const void *address, + unsigned int length) +{ + return ext2fs_crc32c_le(crc, address, length); +} + +_INLINE_ void jbd2_descriptor_block_csum_set(journal_t *j, + struct buffer_head *bh) +{ + struct jbd2_journal_block_tail *tail; + __u32 csum; + + if (!jbd2_journal_has_csum_v2or3(j)) + return; + + tail = (struct jbd2_journal_block_tail *)(bh->b_data + j->j_blocksize - + sizeof(struct jbd2_journal_block_tail)); + tail->t_checksum = 0; + csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize); + tail->t_checksum = cpu_to_be32(csum); +} +#undef _INLINE_ +#endif + +/* + * Kernel compatibility functions are defined in journal.c + */ +int jbd2_journal_bmap(journal_t *journal, unsigned long block, + unsigned long long *phys); +struct buffer_head *getblk(kdev_t ctx, unsigned long long blocknr, + int blocksize); +int sync_blockdev(kdev_t kdev); +void ll_rw_block(int rw, int op_flags, int nr, struct buffer_head *bh[]); +void mark_buffer_dirty(struct buffer_head *bh); +void mark_buffer_uptodate(struct buffer_head *bh, int val); +void brelse(struct buffer_head *bh); +int buffer_uptodate(struct buffer_head *bh); +void wait_on_buffer(struct buffer_head *bh); + +/* + * Define newer 2.5 interfaces + */ +#define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize) +#define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1) + +#ifdef DEBUGFS +#include <assert.h> +#undef J_ASSERT +#define J_ASSERT(x) assert(x) + +#define JSB_HAS_INCOMPAT_FEATURE(jsb, mask) \ + ((jsb)->s_header.h_blocktype == ext2fs_cpu_to_be32(JBD2_SUPERBLOCK_V2) && \ + ((jsb)->s_feature_incompat & ext2fs_cpu_to_be32((mask)))) +#else /* !DEBUGFS */ + +extern e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */ + +#define J_ASSERT(assert) \ + do { if (!(assert)) { \ + printf ("Assertion failure in %s() at %s line %d: " \ + "\"%s\"\n", \ + __func__, __FILE__, __LINE__, # assert); \ + fatal_error(e2fsck_global_ctx, 0); \ + } } while (0) + +#endif /* DEBUGFS */ + +#ifndef EFSBADCRC +#define EFSBADCRC EXT2_ET_BAD_CRC +#endif +#ifndef EFSCORRUPTED +#define EFSCORRUPTED EXT2_ET_FILESYSTEM_CORRUPTED +#endif + +/* recovery.c */ +extern int jbd2_journal_recover (journal_t *journal); +extern int jbd2_journal_skip_recovery (journal_t *); + +/* revoke.c */ +extern int jbd2_journal_init_revoke(journal_t *, int); +extern void jbd2_journal_destroy_revoke(journal_t *); +extern void jbd2_journal_destroy_revoke_record_cache(void); +extern void jbd2_journal_destroy_revoke_table_cache(void); +extern int jbd2_journal_init_revoke_record_cache(void); +extern int jbd2_journal_init_revoke_table_cache(void); + + +extern int jbd2_journal_set_revoke(journal_t *, unsigned long long, tid_t); +extern int jbd2_journal_test_revoke(journal_t *, unsigned long long, tid_t); +extern void jbd2_journal_clear_revoke(journal_t *); + +#endif /* _JFS_USER_H */ |