projects / thirdparty / e2fsprogs.git / blame
| Commit | Line | Data |
|---|---|---|
| 03a179a1 TT |
1 | /* |
| 2 | * ljs.c - List the contents of an journal superblock | |
| 3 | * | |
| 4 | * Copyright (C) 1995, 1996, 1997 Theodore Ts'o <tytso@mit.edu> | |
| 5 | * | |
| 6 | * %Begin-Header% | |
| 7 | * This file may be redistributed under the terms of the GNU Library | |
| 8 | * General Public License, version 2. | |
| 9 | * %End-Header% | |
| 10 | */ | |
| 11 | ||
| 12 | ||
| 13 | #include "config.h" | |
| 14 | #include <stdio.h> | |
| 15 | #include <stdlib.h> | |
| 16 | #include <sys/types.h> | |
| 17 | #include <string.h> | |
| 18 | #include <grp.h> | |
| 19 | #include <pwd.h> | |
| 20 | #include <time.h> | |
| 21 | ||
| 22 | #include "ext2fs/ext2_fs.h" | |
| 23 | #include "ext2fs/ext2fs.h" | |
| 24 | #include "e2p.h" | |
| 25 | #include "ext2fs/kernel-jbd.h" | |
| 26 | ||
| 27 | #ifdef WORDS_BIGENDIAN | |
| 28 | #define e2p_be32(x) (x) | |
| 29 | #else | |
| 30 | static __u32 e2p_swab32(__u32 val) | |
| 31 | { | |
| 32 | return ((val>>24) | ((val>>8)&0xFF00) | | |
| 33 | ((val<<8)&0xFF0000) | (val<<24)); | |
| 34 | } | |
| 35 | ||
| 36 | #define e2p_be32(x) e2p_swab32(x) | |
| 37 | #endif | |
| 38 | ||
| 39 | static const char *journal_checksum_type_str(__u8 type) | |
| 40 | { | |
| 41 | switch (type) { | |
| 42 | case JBD2_CRC32C_CHKSUM: | |
| 43 | return "crc32c"; | |
| 44 | default: | |
| 45 | return "unknown"; | |
| 46 | } | |
| 47 | } | |
| 48 | ||
| 49 | void e2p_list_journal_super(FILE *f, char *journal_sb_buf, | |
| 50 | int exp_block_size, int flags) | |
| 51 | { | |
| 52 | journal_superblock_t *jsb = (journal_superblock_t *) journal_sb_buf; | |
| 53 | __u32 *mask_ptr, mask, m; | |
| 54 | unsigned int size; | |
| ac3256fd TT |
55 | int j, printed = 0; |
| 56 | unsigned int i, nr_users; | |
| 03a179a1 TT |
57 | |
| 58 | fprintf(f, "%s", "Journal features: "); | |
| 59 | for (i=0, mask_ptr=&jsb->s_feature_compat; i <3; i++,mask_ptr++) { | |
| 60 | mask = e2p_be32(*mask_ptr); | |
| 61 | for (j=0,m=1; j < 32; j++, m<<=1) { | |
| 62 | if (mask & m) { | |
| 63 | fprintf(f, " %s", e2p_jrnl_feature2string(i, m)); | |
| 64 | printed++; | |
| 65 | } | |
| 66 | } | |
| 67 | } | |
| 68 | if (printed == 0) | |
| 69 | fprintf(f, " (none)"); | |
| 70 | fputc('\n', f); | |
| 71 | fputs("Journal size: ", f); | |
| 72 | size = (ntohl(jsb->s_blocksize) / 1024) * ntohl(jsb->s_maxlen); | |
| 73 | if (size < 8192) | |
| 74 | fprintf(f, "%uk\n", size); | |
| 75 | else | |
| 76 | fprintf(f, "%uM\n", size >> 10); | |
| 77 | nr_users = (unsigned int) ntohl(jsb->s_nr_users); | |
| ac3256fd | 78 | if (exp_block_size != (int) ntohl(jsb->s_blocksize)) |
| 03a179a1 TT |
79 | fprintf(f, "Journal block size: %u\n", |
| 80 | (unsigned int)ntohl(jsb->s_blocksize)); | |
| 81 | fprintf(f, "Journal length: %u\n", | |
| 82 | (unsigned int)ntohl(jsb->s_maxlen)); | |
| 83 | if (ntohl(jsb->s_first) != 1) | |
| 84 | fprintf(f, "Journal first block: %u\n", | |
| 85 | (unsigned int)ntohl(jsb->s_first)); | |
| 86 | fprintf(f, "Journal sequence: 0x%08x\n" | |
| 87 | "Journal start: %u\n", | |
| 88 | (unsigned int)ntohl(jsb->s_sequence), | |
| 89 | (unsigned int)ntohl(jsb->s_start)); | |
| 90 | if (nr_users != 1) | |
| 91 | fprintf(f, "Journal number of users: %u\n", nr_users); | |
| 8335d3c5 | 92 | if (jsb->s_feature_compat & e2p_be32(JBD2_FEATURE_COMPAT_CHECKSUM)) |
| 03a179a1 TT |
93 | fprintf(f, "%s", "Journal checksum type: crc32\n"); |
| 94 | if ((jsb->s_feature_incompat & | |
| 8335d3c5 | 95 | e2p_be32(JBD2_FEATURE_INCOMPAT_CSUM_V3)) || |
| 03a179a1 | 96 | (jsb->s_feature_incompat & |
| 8335d3c5 | 97 | e2p_be32(JBD2_FEATURE_INCOMPAT_CSUM_V2))) |
| 03a179a1 TT |
98 | fprintf(f, "Journal checksum type: %s\n" |
| 99 | "Journal checksum: 0x%08x\n", | |
| 100 | journal_checksum_type_str(jsb->s_checksum_type), | |
| 101 | e2p_be32(jsb->s_checksum)); | |
| 102 | if ((nr_users > 1) || | |
| 103 | !e2p_is_null_uuid(&jsb->s_users[0])) { | |
| 8335d3c5 | 104 | for (i=0; i < nr_users && i < JBD2_USERS_MAX; i++) { |
| 03a179a1 TT |
105 | printf(i ? " %s\n" |
| 106 | : "Journal users: %s\n", | |
| b0ec76d6 | 107 | e2p_uuid2str(&jsb->s_users[i * UUID_SIZE])); |
| 03a179a1 TT |
108 | } |
| 109 | } | |
| 110 | if (jsb->s_errno != 0) | |
| 111 | fprintf(f, "Journal errno: %d\n", | |
| 112 | (int) ntohl(jsb->s_errno)); | |
| 113 | } |