| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dave Kleikamp | 513 | 94.65% | 6 | 50.00% |
| Siddh Raman Pant | 8 | 1.48% | 1 | 8.33% |
| Mark Bellon | 8 | 1.48% | 1 | 8.33% |
| Tino Reichardt | 5 | 0.92% | 1 | 8.33% |
| Randy Dunlap | 5 | 0.92% | 1 | 8.33% |
| Thomas Gleixner | 2 | 0.37% | 1 | 8.33% |
| Jan Engelhardt | 1 | 0.18% | 1 | 8.33% |
| Total | 542 | 12 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) International Business Machines Corp., 2000-2003 */ #ifndef _H_JFS_FILSYS #define _H_JFS_FILSYS /* * jfs_filsys.h * * file system (implementation-dependent) constants * * refer to <limits.h> for system wide implementation-dependent constants */ /* * file system option (superblock flag) */ /* directory option */ #define JFS_UNICODE 0x00000001 /* unicode name */ /* mount time flags for error handling */ #define JFS_ERR_REMOUNT_RO 0x00000002 /* remount read-only */ #define JFS_ERR_CONTINUE 0x00000004 /* continue */ #define JFS_ERR_PANIC 0x00000008 /* panic */ /* Quota support */ #define JFS_USRQUOTA 0x00000010 #define JFS_GRPQUOTA 0x00000020 /* mount time flag to disable journaling to disk */ #define JFS_NOINTEGRITY 0x00000040 /* mount time flag to enable TRIM to ssd disks */ #define JFS_DISCARD 0x00000080 /* commit option */ #define JFS_COMMIT 0x00000f00 /* commit option mask */ #define JFS_GROUPCOMMIT 0x00000100 /* group (of 1) commit */ #define JFS_LAZYCOMMIT 0x00000200 /* lazy commit */ #define JFS_TMPFS 0x00000400 /* temporary file system - * do not log/commit: * Never implemented */ /* log logical volume option */ #define JFS_INLINELOG 0x00000800 /* inline log within file system */ #define JFS_INLINEMOVE 0x00001000 /* inline log being moved */ /* Secondary aggregate inode table */ #define JFS_BAD_SAIT 0x00010000 /* current secondary ait is bad */ /* sparse regular file support */ #define JFS_SPARSE 0x00020000 /* sparse regular file */ /* DASD Limits F226941 */ #define JFS_DASD_ENABLED 0x00040000 /* DASD limits enabled */ #define JFS_DASD_PRIME 0x00080000 /* Prime DASD usage on boot */ /* big endian flag */ #define JFS_SWAP_BYTES 0x00100000 /* running on big endian computer */ /* Directory index */ #define JFS_DIR_INDEX 0x00200000 /* Persistent index for */ /* platform options */ #define JFS_LINUX 0x10000000 /* Linux support */ #define JFS_DFS 0x20000000 /* DCE DFS LFS support */ /* Never implemented */ #define JFS_OS2 0x40000000 /* OS/2 support */ /* case-insensitive name/directory support */ #define JFS_AIX 0x80000000 /* AIX support */ /* * buffer cache configuration */ /* page size */ #ifdef PSIZE #undef PSIZE #endif #define PSIZE 4096 /* page size (in byte) */ #define L2PSIZE 12 /* log2(PSIZE) */ #define POFFSET 4095 /* offset within page */ /* buffer page size */ #define BPSIZE PSIZE /* * fs fundamental size * * PSIZE >= file system block size >= PBSIZE >= DISIZE */ #define PBSIZE 512 /* physical block size (in byte) */ #define L2PBSIZE 9 /* log2(PBSIZE) */ #define DISIZE 512 /* on-disk inode size (in byte) */ #define L2DISIZE 9 /* log2(DISIZE) */ #define IDATASIZE 256 /* inode inline data size */ #define IXATTRSIZE 128 /* inode inline extended attribute size */ #define XTPAGE_SIZE 4096 #define log2_PAGESIZE 12 #define IAG_SIZE 4096 #define IAG_EXTENT_SIZE 4096 #define INOSPERIAG 4096 /* number of disk inodes per iag */ #define L2INOSPERIAG 12 /* l2 number of disk inodes per iag */ #define INOSPEREXT 32 /* number of disk inode per extent */ #define L2INOSPEREXT 5 /* l2 number of disk inode per extent */ #define IXSIZE (DISIZE * INOSPEREXT) /* inode extent size */ #define INOSPERPAGE 8 /* number of disk inodes per 4K page */ #define L2INOSPERPAGE 3 /* log2(INOSPERPAGE) */ #define IAGFREELIST_LWM 64 #define INODE_EXTENT_SIZE IXSIZE /* inode extent size */ #define NUM_INODE_PER_EXTENT INOSPEREXT #define NUM_INODE_PER_IAG INOSPERIAG #define MINBLOCKSIZE 512 #define L2MINBLOCKSIZE 9 #define MAXBLOCKSIZE 4096 #define L2MAXBLOCKSIZE 12 #define MAXFILESIZE ((s64)1 << 52) #define JFS_LINK_MAX 0xffffffff /* Minimum number of bytes supported for a JFS partition */ #define MINJFS (0x1000000) #define MINJFSTEXT "16" /* * file system block size -> physical block size */ #define LBOFFSET(x) ((x) & (PBSIZE - 1)) #define LBNUMBER(x) ((x) >> L2PBSIZE) #define LBLK2PBLK(sb,b) ((b) << (sb->s_blocksize_bits - L2PBSIZE)) #define PBLK2LBLK(sb,b) ((b) >> (sb->s_blocksize_bits - L2PBSIZE)) /* size in byte -> last page number */ #define SIZE2PN(size) ( ((s64)((size) - 1)) >> (L2PSIZE) ) /* size in byte -> last file system block number */ #define SIZE2BN(size, l2bsize) ( ((s64)((size) - 1)) >> (l2bsize) ) /* * fixed physical block address (physical block size = 512 byte) * * NOTE: since we can't guarantee a physical block size of 512 bytes the use of * these macros should be removed and the byte offset macros used instead. */ #define SUPER1_B 64 /* primary superblock */ #define AIMAP_B (SUPER1_B + 8) /* 1st extent of aggregate inode map */ #define AITBL_B (AIMAP_B + 16) /* * 1st extent of aggregate inode table */ #define SUPER2_B (AITBL_B + 32) /* 2ndary superblock pbn */ #define BMAP_B (SUPER2_B + 8) /* block allocation map */ /* * SIZE_OF_SUPER defines the total amount of space reserved on disk for the * superblock. This is not the same as the superblock structure, since all of * this space is not currently being used. */ #define SIZE_OF_SUPER PSIZE /* * SIZE_OF_AG_TABLE defines the amount of space reserved to hold the AG table */ #define SIZE_OF_AG_TABLE PSIZE /* * SIZE_OF_MAP_PAGE defines the amount of disk space reserved for each page of * the inode allocation map (to hold iag) */ #define SIZE_OF_MAP_PAGE PSIZE /* * fixed byte offset address */ #define SUPER1_OFF 0x8000 /* primary superblock */ #define AIMAP_OFF (SUPER1_OFF + SIZE_OF_SUPER) /* * Control page of aggregate inode map * followed by 1st extent of map */ #define AITBL_OFF (AIMAP_OFF + (SIZE_OF_MAP_PAGE << 1)) /* * 1st extent of aggregate inode table */ #define SUPER2_OFF (AITBL_OFF + INODE_EXTENT_SIZE) /* * secondary superblock */ #define BMAP_OFF (SUPER2_OFF + SIZE_OF_SUPER) /* * block allocation map */ /* * The following macro is used to indicate the number of reserved disk blocks at * the front of an aggregate, in terms of physical blocks. This value is * currently defined to be 32K. This turns out to be the same as the primary * superblock's address, since it directly follows the reserved blocks. */ #define AGGR_RSVD_BLOCKS SUPER1_B /* * The following macro is used to indicate the number of reserved bytes at the * front of an aggregate. This value is currently defined to be 32K. This * turns out to be the same as the primary superblock's byte offset, since it * directly follows the reserved blocks. */ #define AGGR_RSVD_BYTES SUPER1_OFF /* * The following macro defines the byte offset for the first inode extent in * the aggregate inode table. This allows us to find the self inode to find the * rest of the table. Currently this value is 44K. */ #define AGGR_INODE_TABLE_START AITBL_OFF /* * fixed reserved inode number */ /* aggregate inode */ #define AGGR_RESERVED_I 0 /* aggregate inode (reserved) */ #define AGGREGATE_I 1 /* aggregate inode map inode */ #define BMAP_I 2 /* aggregate block allocation map inode */ #define LOG_I 3 /* aggregate inline log inode */ #define BADBLOCK_I 4 /* aggregate bad block inode */ #define FILESYSTEM_I 16 /* 1st/only fileset inode in ait: * fileset inode map inode */ /* per fileset inode */ #define FILESET_RSVD_I 0 /* fileset inode (reserved) */ #define FILESET_EXT_I 1 /* fileset inode extension */ #define ROOT_I 2 /* fileset root inode */ #define ACL_I 3 /* fileset ACL inode */ #define FILESET_OBJECT_I 4 /* the first fileset inode available for a file * or directory or link... */ #define FIRST_FILESET_INO 16 /* the first aggregate inode which describes * an inode. (To fsck this is also the first * inode in part 2 of the agg inode table.) */ /* * directory configuration */ #define JFS_NAME_MAX 255 #define JFS_PATH_MAX BPSIZE /* * file system state (superblock state) */ #define FM_CLEAN 0x00000000 /* file system is unmounted and clean */ #define FM_MOUNT 0x00000001 /* file system is mounted cleanly */ #define FM_DIRTY 0x00000002 /* file system was not unmounted and clean * when mounted or * commit failure occurred while being mounted: * fsck() must be run to repair */ #define FM_LOGREDO 0x00000004 /* log based recovery (logredo()) failed: * fsck() must be run to repair */ #define FM_EXTENDFS 0x00000008 /* file system extendfs() in progress */ #define FM_STATE_MAX 0x0000000f /* max value of s_state */ #endif /* _H_JFS_FILSYS */
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