| /* |
| * 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 */ |