diff options
Diffstat (limited to 'libc/kernel/common/linux/jbd.h')
-rw-r--r-- | libc/kernel/common/linux/jbd.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/libc/kernel/common/linux/jbd.h b/libc/kernel/common/linux/jbd.h new file mode 100644 index 0000000..7ba766c --- /dev/null +++ b/libc/kernel/common/linux/jbd.h @@ -0,0 +1,118 @@ +/**************************************************************************** + **************************************************************************** + *** + *** This header was automatically generated from a Linux kernel header + *** of the same name, to make information necessary for userspace to + *** call into the kernel available to libc. It contains only constants, + *** structures, and macros generated from the original header, and thus, + *** contains no copyrightable information. + *** + **************************************************************************** + ****************************************************************************/ +#ifndef _LINUX_JBD_H +#define _LINUX_JBD_H + +#include "jfs_compat.h" +#define JFS_DEBUG +#define jfs_debug jbd_debug + +#define journal_oom_retry 1 + +#undef JBD_PARANOID_IOFAIL + +#define JBD_DEFAULT_MAX_COMMIT_AGE 5 + +#define jbd_debug(f, a...) + +#define jbd_kmalloc(size, flags) __jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry) +#define jbd_rep_kmalloc(size, flags) __jbd_kmalloc(__FUNCTION__, (size), (flags), 1) + +#define JFS_MIN_JOURNAL_BLOCKS 1024 + +#define JFS_MAGIC_NUMBER 0xc03b3998U + +#define JFS_DESCRIPTOR_BLOCK 1 +#define JFS_COMMIT_BLOCK 2 +#define JFS_SUPERBLOCK_V1 3 +#define JFS_SUPERBLOCK_V2 4 +#define JFS_REVOKE_BLOCK 5 + +typedef struct journal_header_s +{ + __be32 h_magic; + __be32 h_blocktype; + __be32 h_sequence; +} journal_header_t; + +typedef struct journal_block_tag_s +{ + __be32 t_blocknr; + __be32 t_flags; +} journal_block_tag_t; + +typedef struct journal_revoke_header_s +{ + journal_header_t r_header; + __be32 r_count; +} journal_revoke_header_t; + +#define JFS_FLAG_ESCAPE 1 +#define JFS_FLAG_SAME_UUID 2 +#define JFS_FLAG_DELETED 4 +#define JFS_FLAG_LAST_TAG 8 + +typedef struct journal_superblock_s +{ + + journal_header_t s_header; + + __be32 s_blocksize; + __be32 s_maxlen; + __be32 s_first; + + __be32 s_sequence; + __be32 s_start; + + __be32 s_errno; + + __be32 s_feature_compat; + __be32 s_feature_incompat; + __be32 s_feature_ro_compat; + + __u8 s_uuid[16]; + + __be32 s_nr_users; + + __be32 s_dynsuper; + + __be32 s_max_transaction; + __be32 s_max_trans_data; + + __u32 s_padding[44]; + + __u8 s_users[16*48]; + +} journal_superblock_t; + +#define JFS_HAS_COMPAT_FEATURE(j,mask) ((j)->j_format_version >= 2 && ((j)->j_superblock->s_feature_compat & cpu_to_be32((mask)))) +#define JFS_HAS_RO_COMPAT_FEATURE(j,mask) ((j)->j_format_version >= 2 && ((j)->j_superblock->s_feature_ro_compat & cpu_to_be32((mask)))) +#define JFS_HAS_INCOMPAT_FEATURE(j,mask) ((j)->j_format_version >= 2 && ((j)->j_superblock->s_feature_incompat & cpu_to_be32((mask)))) + +#define JFS_FEATURE_INCOMPAT_REVOKE 0x00000001 + +#define JFS_KNOWN_COMPAT_FEATURES 0 +#define JFS_KNOWN_ROCOMPAT_FEATURES 0 +#define JFS_KNOWN_INCOMPAT_FEATURES JFS_FEATURE_INCOMPAT_REVOKE + +#define BJ_None 0 +#define BJ_SyncData 1 +#define BJ_Metadata 2 +#define BJ_Forget 3 +#define BJ_IO 4 +#define BJ_Shadow 5 +#define BJ_LogCtl 6 +#define BJ_Reserved 7 +#define BJ_Locked 8 +#define BJ_Types 9 + +#endif |