1d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o/* 2d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o * mkjournal.c --- make a journal for a filesystem 3d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o * 4d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o * Copyright (C) 2000 Theodore Ts'o. 5efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o * 6d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o * %Begin-Header% 7543547a52a20cb7e69d74921b2f691078fd55d83Theodore Ts'o * This file may be redistributed under the terms of the GNU Library 8543547a52a20cb7e69d74921b2f691078fd55d83Theodore Ts'o * General Public License, version 2. 9d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o * %End-Header% 10d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o */ 11d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 12d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include <stdio.h> 13d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include <string.h> 14d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#if HAVE_UNISTD_H 15d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include <unistd.h> 16d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#endif 17d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#if HAVE_ERRNO_H 18d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include <errno.h> 19d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#endif 20d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include <fcntl.h> 21d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include <time.h> 22d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#if HAVE_SYS_STAT_H 23d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include <sys/stat.h> 24d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#endif 25d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#if HAVE_SYS_TYPES_H 26d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include <sys/types.h> 27d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#endif 28349a484a57ab13fed315f72552bdf8dbf89ba72aTheodore Ts'o#if HAVE_SYS_IOCTL_H 29349a484a57ab13fed315f72552bdf8dbf89ba72aTheodore Ts'o#include <sys/ioctl.h> 30349a484a57ab13fed315f72552bdf8dbf89ba72aTheodore Ts'o#endif 3117ee8b17f91988a3beedbd96eec4642e784f3251Theodore Ts'o#if HAVE_NETINET_IN_H 3217ee8b17f91988a3beedbd96eec4642e784f3251Theodore Ts'o#include <netinet/in.h> 3317ee8b17f91988a3beedbd96eec4642e784f3251Theodore Ts'o#endif 34d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 35d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include "ext2_fs.h" 36cdaf1fa78f6d63457eb5337c14b23e567d1346a7Theodore Ts'o#include "e2p/e2p.h" 37d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#include "ext2fs.h" 38586187372afea65ae685687505b49b40fc5f3212Theodore Ts'o#include "jfs_user.h" 39d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 40a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o/* 41a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o * This function automatically sets up the journal superblock and 42a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o * returns it as an allocated block. 43a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o */ 44a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'oerrcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 45e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall __u32 num_blocks, int flags, 46a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o char **ret_jsb) 47d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o{ 48a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o errcode_t retval; 49a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o journal_superblock_t *jsb; 50036039460ff76f397bc23977a26632698136b0e6Theodore Ts'o 51e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (num_blocks < 1024) 52036039460ff76f397bc23977a26632698136b0e6Theodore Ts'o return EXT2_ET_JOURNAL_TOO_SMALL; 53036039460ff76f397bc23977a26632698136b0e6Theodore Ts'o 54c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o if ((retval = ext2fs_get_mem(fs->blocksize, &jsb))) 55a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o return retval; 56a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o 57a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o memset (jsb, 0, fs->blocksize); 58586187372afea65ae685687505b49b40fc5f3212Theodore Ts'o 59d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER); 604e246704eab31407ac15be9ab206c6f929507cf0Theodore Ts'o if (flags & EXT2_MKJOURNAL_V1_SUPER) 614e246704eab31407ac15be9ab206c6f929507cf0Theodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V1); 624e246704eab31407ac15be9ab206c6f929507cf0Theodore Ts'o else 634e246704eab31407ac15be9ab206c6f929507cf0Theodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2); 64a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o jsb->s_blocksize = htonl(fs->blocksize); 65e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall jsb->s_maxlen = htonl(num_blocks); 66d23042af75f2723ed4575946cfa310fca4e526efTheodore Ts'o jsb->s_nr_users = htonl(1); 67d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o jsb->s_first = htonl(1); 68d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o jsb->s_sequence = htonl(1); 69a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o memcpy(jsb->s_uuid, fs->super->s_uuid, sizeof(fs->super->s_uuid)); 70a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o /* 71d23042af75f2723ed4575946cfa310fca4e526efTheodore Ts'o * If we're creating an external journal device, we need to 72d23042af75f2723ed4575946cfa310fca4e526efTheodore Ts'o * adjust these fields. 73a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o */ 74a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o if (fs->super->s_feature_incompat & 754e40f6c348b9c9f4bd9c82c2b5404c2eabbdc1d3Theodore Ts'o EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 76a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o jsb->s_nr_users = 0; 774e40f6c348b9c9f4bd9c82c2b5404c2eabbdc1d3Theodore Ts'o if (fs->blocksize == 1024) 784e40f6c348b9c9f4bd9c82c2b5404c2eabbdc1d3Theodore Ts'o jsb->s_first = htonl(3); 794e40f6c348b9c9f4bd9c82c2b5404c2eabbdc1d3Theodore Ts'o else 804e40f6c348b9c9f4bd9c82c2b5404c2eabbdc1d3Theodore Ts'o jsb->s_first = htonl(2); 814e40f6c348b9c9f4bd9c82c2b5404c2eabbdc1d3Theodore Ts'o } 82a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o 83a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o *ret_jsb = (char *) jsb; 84a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o return 0; 85d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o} 864becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 87d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o/* 884becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o * This function writes a journal using POSIX routines. It is used 894becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o * for creating external journals and creating journals on live 904becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o * filesystems. 91d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o */ 92a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'ostatic errcode_t write_journal_file(ext2_filsys fs, char *filename, 93e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk_t num_blocks, int flags) 94d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o{ 95d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o errcode_t retval; 96d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o char *buf = 0; 97544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o int fd, ret_size; 98544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o blk_t i; 99d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 100e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if ((retval = ext2fs_create_journal_superblock(fs, num_blocks, flags, 101e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall &buf))) 102a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o return retval; 103d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 104a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o /* Open the device or journal file */ 105a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o if ((fd = open(filename, O_WRONLY)) < 0) { 106d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o retval = errno; 107e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall goto errfree; 108d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 109d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 110d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o /* Write the superblock out */ 111d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o retval = EXT2_ET_SHORT_WRITE; 112d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o ret_size = write(fd, buf, fs->blocksize); 113d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (ret_size < 0) { 114a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o retval = errno; 115d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o goto errout; 116d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 117544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o if (ret_size != (int) fs->blocksize) 118d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o goto errout; 119d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o memset(buf, 0, fs->blocksize); 1204becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 121e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (flags & EXT2_MKJOURNAL_LAZYINIT) 122e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall goto success; 123e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall 124e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall for (i = 1; i < num_blocks; i++) { 125d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o ret_size = write(fd, buf, fs->blocksize); 126d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (ret_size < 0) { 127d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o retval = errno; 128d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o goto errout; 129d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 130544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o if (ret_size != (int) fs->blocksize) 131d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o goto errout; 132d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 133d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 134e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallsuccess: 1354becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o retval = 0; 136d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'oerrout: 137e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall close(fd); 138e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallerrfree: 139c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&buf); 140d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o return retval; 141d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o} 142d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 143d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o/* 144c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o * Convenience function which zeros out _num_ blocks starting at 145c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o * _blk_. In case of an error, the details of the error is returned 146c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o * via _ret_blk_ and _ret_count_ if they are non-NULL pointers. 147c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o * Returns 0 on success, and an error code on an error. 148c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o * 149c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o * As a special case, if the first argument is NULL, then it will 150c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o * attempt to free the static zeroizing buffer. (This is to keep 151c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o * programs that check for memory leaks happy.) 152c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o */ 153c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o#define STRIDE_LENGTH 8 154e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallerrcode_t ext2fs_zero_blocks2(ext2_filsys fs, blk64_t blk, int num, 155e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t *ret_blk, int *ret_count) 156c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o{ 157c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o int j, count; 158c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o static char *buf; 159c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o errcode_t retval; 160c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o 161c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o /* If fs is null, clean up the static buffer and return */ 162c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (!fs) { 163c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (buf) { 164c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o free(buf); 165c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o buf = 0; 166c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 167c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o return 0; 168c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 169c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o /* Allocate the zeroizing buffer if necessary */ 170c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (!buf) { 171c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o buf = malloc(fs->blocksize * STRIDE_LENGTH); 172c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (!buf) 173c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o return ENOMEM; 174c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o memset(buf, 0, fs->blocksize * STRIDE_LENGTH); 175c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 176c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o /* OK, do the write loop */ 177c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o j=0; 178c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o while (j < num) { 179bc507e31ad8a890232dc2b3aec9ee9d68e95622aTheodore Ts'o if (blk % STRIDE_LENGTH) { 180c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o count = STRIDE_LENGTH - (blk % STRIDE_LENGTH); 181bc507e31ad8a890232dc2b3aec9ee9d68e95622aTheodore Ts'o if (count > (num - j)) 182bc507e31ad8a890232dc2b3aec9ee9d68e95622aTheodore Ts'o count = num - j; 183bc507e31ad8a890232dc2b3aec9ee9d68e95622aTheodore Ts'o } else { 184c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o count = num - j; 185c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (count > STRIDE_LENGTH) 186c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o count = STRIDE_LENGTH; 187c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 188e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = io_channel_write_blk64(fs->io, blk, count, buf); 189c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (retval) { 190c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (ret_count) 191c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o *ret_count = count; 192c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (ret_blk) 193c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o *ret_blk = blk; 194c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o return retval; 195c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 196c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o j += count; blk += count; 197c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 198c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o return 0; 199c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o} 200c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o 201e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallerrcode_t ext2fs_zero_blocks(ext2_filsys fs, blk_t blk, int num, 202e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk_t *ret_blk, int *ret_count) 203e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall{ 204e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t ret_blk2; 205e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall errcode_t retval; 206e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall 207e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = ext2fs_zero_blocks2(fs, blk, num, &ret_blk2, ret_count); 208e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (retval) 209e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall *ret_blk = (blk_t) ret_blk2; 210e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall return retval; 211e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall} 212e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall 213c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o/* 2144becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o * Helper function for creating the journal using direct I/O routines 215d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o */ 216d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'ostruct mkjournal_struct { 217d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o int num_blocks; 218d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o int newblocks; 219e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t goal; 220e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t blk_to_zero; 221c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o int zero_count; 222e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall int flags; 223d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o char *buf; 224d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o errcode_t err; 225d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o}; 226d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 227544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'ostatic int mkjournal_proc(ext2_filsys fs, 228e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t *blocknr, 229e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall e2_blkcnt_t blockcnt, 230e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t ref_block EXT2FS_ATTR((unused)), 231e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall int ref_offset EXT2FS_ATTR((unused)), 232e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall void *priv_data) 233d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o{ 234d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o struct mkjournal_struct *es = (struct mkjournal_struct *) priv_data; 235e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t new_blk; 236d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o errcode_t retval; 237efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 238d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (*blocknr) { 2391af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o es->goal = *blocknr; 240d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o return 0; 241d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 242e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (blockcnt && 243e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall (EXT2FS_B2C(fs, es->goal) == EXT2FS_B2C(fs, es->goal+1))) 244e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall new_blk = es->goal+1; 245e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall else { 246e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall es->goal &= ~EXT2FS_CLUSTER_MASK(fs); 247e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = ext2fs_new_block2(fs, es->goal, 0, &new_blk); 248e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (retval) { 249e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall es->err = retval; 250e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall return BLOCK_ABORT; 251e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall } 252e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall ext2fs_block_alloc_stats2(fs, new_blk, +1); 253e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall es->newblocks++; 254d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 255674c0cc4cb137c6362cb1ae71b6db5cbccbad83aTheodore Ts'o if (blockcnt >= 0) 256d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o es->num_blocks--; 257d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 258c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o retval = 0; 259c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (blockcnt <= 0) 260e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = io_channel_write_blk64(fs->io, new_blk, 1, es->buf); 261e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall else if (!(es->flags & EXT2_MKJOURNAL_LAZYINIT)) { 262c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (es->zero_count) { 263c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if ((es->blk_to_zero + es->zero_count == new_blk) && 264c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o (es->zero_count < 1024)) 265c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o es->zero_count++; 266c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o else { 267e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = ext2fs_zero_blocks2(fs, 268e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall es->blk_to_zero, 269e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall es->zero_count, 270e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall 0, 0); 271c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o es->zero_count = 0; 272c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 273c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 274c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (es->zero_count == 0) { 275c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o es->blk_to_zero = new_blk; 276c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o es->zero_count = 1; 277c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 278c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 279d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 280d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (blockcnt == 0) 281d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o memset(es->buf, 0, fs->blocksize); 282d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 283d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (retval) { 284d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o es->err = retval; 285d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o return BLOCK_ABORT; 286d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 2871af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o *blocknr = es->goal = new_blk; 288d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 289d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (es->num_blocks == 0) 290d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o return (BLOCK_CHANGED | BLOCK_ABORT); 291d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o else 292d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o return BLOCK_CHANGED; 293efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 294d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o} 295d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 296d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o/* 2974becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o * This function creates a journal using direct I/O routines. 298d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o */ 29931dbecd482405e0d3a67eb58e1a1c8cb9f2ad83eTheodore Ts'ostatic errcode_t write_journal_inode(ext2_filsys fs, ext2_ino_t journal_ino, 300e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk_t num_blocks, int flags) 301d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o{ 302a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o char *buf; 303b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o dgrp_t group, start, end, i, log_flex; 304d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o errcode_t retval; 305d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o struct ext2_inode inode; 306e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall unsigned long long inode_size; 307d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o struct mkjournal_struct es; 308d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 309e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if ((retval = ext2fs_create_journal_superblock(fs, num_blocks, flags, 310e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall &buf))) 311a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o return retval; 312efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 313d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if ((retval = ext2fs_read_bitmaps(fs))) 314e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall goto out2; 315d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 3164becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o if ((retval = ext2fs_read_inode(fs, journal_ino, &inode))) 317e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall goto out2; 318d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 319e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (inode.i_blocks > 0) { 320e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = EEXIST; 321e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall goto out2; 322e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall } 323d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 324e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall es.num_blocks = num_blocks; 325d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o es.newblocks = 0; 326d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o es.buf = buf; 327d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o es.err = 0; 328e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall es.flags = flags; 329c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o es.zero_count = 0; 330d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 331961306d31ad36a9eef4e515343c9e355afc6e19cTheodore Ts'o if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS) { 332961306d31ad36a9eef4e515343c9e355afc6e19cTheodore Ts'o inode.i_flags |= EXT4_EXTENTS_FL; 333961306d31ad36a9eef4e515343c9e355afc6e19cTheodore Ts'o if ((retval = ext2fs_write_inode(fs, journal_ino, &inode))) 334e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall goto out2; 335961306d31ad36a9eef4e515343c9e355afc6e19cTheodore Ts'o } 336961306d31ad36a9eef4e515343c9e355afc6e19cTheodore Ts'o 3371af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o /* 3381af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o * Set the initial goal block to be roughly at the middle of 3391af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o * the filesystem. Pick a group that has the largest number 3401af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o * of free blocks. 3411af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o */ 342e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall group = ext2fs_group_of_blk2(fs, (ext2fs_blocks_count(fs->super) - 3431af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o fs->super->s_first_data_block) / 2); 344b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o log_flex = 1 << fs->super->s_log_groups_per_flex; 345b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o if (fs->super->s_log_groups_per_flex && (group > log_flex)) { 346b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o group = group & ~(log_flex - 1); 347b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o while ((group < fs->group_desc_count) && 348e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall ext2fs_bg_free_blocks_count(fs, group) == 0) 349b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o group++; 350b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o if (group == fs->group_desc_count) 351b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o group = 0; 352b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o start = group; 353b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o } else 354b55d73985cc7a33e2b57161e5ea1a5a2ad1bff9cTheodore Ts'o start = (group > 0) ? group-1 : group; 3551af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o end = ((group+1) < fs->group_desc_count) ? group+1 : group; 3561af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o group = start; 3571af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o for (i=start+1; i <= end; i++) 358e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (ext2fs_bg_free_blocks_count(fs, i) > 359e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall ext2fs_bg_free_blocks_count(fs, group)) 3601af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o group = i; 3611af01e94cc020ab989cc97cec1b755bf2a476508Theodore Ts'o 362e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall es.goal = ext2fs_group_first_block2(fs, group); 363e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = ext2fs_block_iterate3(fs, journal_ino, BLOCK_FLAG_APPEND, 364d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 0, mkjournal_proc, &es); 365a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o if (es.err) { 366a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o retval = es.err; 367a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o goto errout; 368a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o } 369c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (es.zero_count) { 370e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = ext2fs_zero_blocks2(fs, es.blk_to_zero, 371c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o es.zero_count, 0, 0); 372c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o if (retval) 373c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o goto errout; 374c86085044195c8b721fe9ee327d790316399781eTheodore Ts'o } 375d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 3764becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o if ((retval = ext2fs_read_inode(fs, journal_ino, &inode))) 377a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o goto errout; 378d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 379e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall inode_size = (unsigned long long)fs->blocksize * num_blocks; 380e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall inode.i_size = inode_size & 0xFFFFFFFF; 381e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall inode.i_size_high = (inode_size >> 32) & 0xFFFFFFFF; 382e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (ext2fs_needs_large_file_feature(inode_size)) 383e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall fs->super->s_feature_ro_compat |= 384e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall EXT2_FEATURE_RO_COMPAT_LARGE_FILE; 3851ca1059fd0126fd2c065f272a566c18f14bab16dTheodore Ts'o ext2fs_iblk_add_blocks(fs, &inode, es.newblocks); 38632138187f08d1f1dc03feb269f987982db76f3dbTheodore Ts'o inode.i_mtime = inode.i_ctime = fs->now ? fs->now : time(0); 387d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o inode.i_links_count = 1; 388d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o inode.i_mode = LINUX_S_IFREG | 0600; 389d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 390827c1887118eb68a64f8455d0b7cbbbed65e714aEric Sandeen if ((retval = ext2fs_write_new_inode(fs, journal_ino, &inode))) 391a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o goto errout; 392a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o retval = 0; 393d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 394a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcpy(fs->super->s_jnl_blocks, inode.i_block, EXT2_N_BLOCKS*4); 395e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall fs->super->s_jnl_blocks[15] = inode.i_size_high; 396a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o fs->super->s_jnl_blocks[16] = inode.i_size; 397a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o fs->super->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS; 398a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ext2fs_mark_super_dirty(fs); 399a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 400a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'oerrout: 401e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall ext2fs_zero_blocks2(0, 0, 0, 0, 0); 402e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallout2: 403c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&buf); 404a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o return retval; 4054becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o} 4064becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 4074becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o/* 40856d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o * Find a reasonable journal file size (in blocks) given the number of blocks 40956d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o * in the filesystem. For very small filesystems, it is not reasonable to 41056d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o * have a journal that fills more than half of the filesystem. 41156d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o */ 412e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallint ext2fs_default_journal_size(__u64 num_blocks) 41356d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o{ 414e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (num_blocks < 2048) 41556d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o return -1; 416e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (num_blocks < 32768) 41756d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o return (1024); 418e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (num_blocks < 256*1024) 41956d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o return (4096); 420e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (num_blocks < 512*1024) 42156d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o return (8192); 422e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (num_blocks < 1024*1024) 42356d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o return (16384); 42456d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o return 32768; 42556d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o} 42656d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o 42756d1236726d8e4624d2f3a2f4713864c1e66bb40Theodore Ts'o/* 4284becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o * This function adds a journal device to a filesystem 4294becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o */ 430a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'oerrcode_t ext2fs_add_journal_device(ext2_filsys fs, ext2_filsys journal_dev) 4314becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o{ 4324becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o struct stat st; 4334becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o errcode_t retval; 434a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o char buf[1024]; 435a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o journal_superblock_t *jsb; 436544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o int start; 437544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o __u32 i, nr_users; 4384becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 4394becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o /* Make sure the device exists and is a block device */ 440020888625fb8f6d5293e67da95ae18c0af45aeadTheodore Ts'o if (stat(journal_dev->device_name, &st) < 0) 4414becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o return errno; 442efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 4434becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o if (!S_ISBLK(st.st_mode)) 444036039460ff76f397bc23977a26632698136b0e6Theodore Ts'o return EXT2_ET_JOURNAL_NOT_BLOCK; /* Must be a block device */ 4454becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 446a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o /* Get the journal superblock */ 44736131b37d7d37ad59153cc2c56f774e28e286acfTheodore Ts'o start = 1; 44836131b37d7d37ad59153cc2c56f774e28e286acfTheodore Ts'o if (journal_dev->blocksize == 1024) 44936131b37d7d37ad59153cc2c56f774e28e286acfTheodore Ts'o start++; 450e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if ((retval = io_channel_read_blk64(journal_dev->io, start, -1024, 451e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall buf))) 4524becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o return retval; 4534becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 454a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o jsb = (journal_superblock_t *) buf; 455a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) || 456a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) 457036039460ff76f397bc23977a26632698136b0e6Theodore Ts'o return EXT2_ET_NO_JOURNAL_SB; 458a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o 459544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o if (ntohl(jsb->s_blocksize) != (unsigned long) fs->blocksize) 460a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o return EXT2_ET_UNEXPECTED_BLOCK_SIZE; 461a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o 462a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o /* Check and see if this filesystem has already been added */ 463a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o nr_users = ntohl(jsb->s_nr_users); 464a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o for (i=0; i < nr_users; i++) { 465a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o if (memcmp(fs->super->s_uuid, 466a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o &jsb->s_users[i*16], 16) == 0) 467a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o break; 468a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o } 469a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o if (i >= nr_users) { 470a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o memcpy(&jsb->s_users[nr_users*16], 471a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o fs->super->s_uuid, 16); 472a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o jsb->s_nr_users = htonl(nr_users+1); 473a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o } 4744becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 475a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o /* Writeback the journal superblock */ 476e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if ((retval = io_channel_write_blk64(journal_dev->io, start, -1024, buf))) 4774becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o return retval; 478efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 4794becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o fs->super->s_journal_inum = 0; 4804becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o fs->super->s_journal_dev = st.st_rdev; 481a112847b39386f9e7332ba5e5a0a5e54cfe301ccTheodore Ts'o memcpy(fs->super->s_journal_uuid, jsb->s_uuid, 4824becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o sizeof(fs->super->s_journal_uuid)); 4834becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o fs->super->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4844becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o ext2fs_mark_super_dirty(fs); 485cdaf1fa78f6d63457eb5337c14b23e567d1346a7Theodore Ts'o return 0; 4864becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o} 4874becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 4884becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o/* 4894becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o * This function adds a journal inode to a filesystem, using either 4904becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o * POSIX routines if the filesystem is mounted, or using direct I/O 4914becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o * functions if it is not. 4924becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o */ 493e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallerrcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, int flags) 4944becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o{ 4954becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o errcode_t retval; 49631dbecd482405e0d3a67eb58e1a1c8cb9f2ad83eTheodore Ts'o ext2_ino_t journal_ino; 4974becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o struct stat st; 4984becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o char jfile[1024]; 499e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall int mount_flags; 5009b9a780f5a5823865f62f0c9fd194d262f63a06fTheodore Ts'o int fd = -1; 5014becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 502e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (flags & EXT2_MKJOURNAL_NO_MNT_CHECK) 503e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall mount_flags = 0; 504e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall else if ((retval = ext2fs_check_mount_point(fs->device_name, 505e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall &mount_flags, 506e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall jfile, sizeof(jfile)-10))) 5074becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o return retval; 5084becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 5094becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o if (mount_flags & EXT2_MF_MOUNTED) { 510e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall#if HAVE_EXT2_IOCTLS 511e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall int f = 0; 512e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall#endif 5134becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o strcat(jfile, "/.journal"); 5144becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 5155bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o /* 516efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o * If .../.journal already exists, make sure any 5175bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o * immutable or append-only flags are cleared. 5185bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o */ 5195bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o#if defined(HAVE_CHFLAGS) && defined(UF_NODUMP) 5205bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o (void) chflags (jfile, 0); 5215bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o#else 5225bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o#if HAVE_EXT2_IOCTLS 5235bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o fd = open(jfile, O_RDONLY); 5245bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o if (fd >= 0) { 525e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = ioctl(fd, EXT2_IOC_SETFLAGS, &f); 5265bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o close(fd); 527e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (retval) 528e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall return retval; 5295bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o } 5305bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o#endif 5315bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o#endif 5325bc28df0fa2544a08b65d9091fdc9fb23bdbce68Theodore Ts'o 5334becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o /* Create the journal file */ 5344becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o if ((fd = open(jfile, O_CREAT|O_WRONLY, 0600)) < 0) 5354becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o return errno; 5364becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 537e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall /* Note that we can't do lazy journal initialization for mounted 538e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall * filesystems, since the zero writing is also allocating the 539e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall * journal blocks. We could use fallocate, but not all kernels 540e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall * support that, and creating a journal on a mounted ext2 541e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall * filesystems is extremely rare these days... Ignore it. */ 542e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall flags &= ~EXT2_MKJOURNAL_LAZYINIT; 543e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall 544e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if ((retval = write_journal_file(fs, jfile, num_blocks, flags))) 545b23520d0501095dee715d0829c365933c216e612Theodore Ts'o goto errout; 546efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5474becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o /* Get inode number of the journal file */ 5488bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o if (fstat(fd, &st) < 0) { 5498bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o retval = errno; 550b23520d0501095dee715d0829c365933c216e612Theodore Ts'o goto errout; 5518bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o } 5524becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o 5537833262585b0f9f85915c387fa35708cf3ff3609Theodore Ts'o#if defined(HAVE_CHFLAGS) && defined(UF_NODUMP) 554349a484a57ab13fed315f72552bdf8dbf89ba72aTheodore Ts'o retval = fchflags (fd, UF_NODUMP|UF_IMMUTABLE); 555349a484a57ab13fed315f72552bdf8dbf89ba72aTheodore Ts'o#else 556349a484a57ab13fed315f72552bdf8dbf89ba72aTheodore Ts'o#if HAVE_EXT2_IOCTLS 5578bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o if (ioctl(fd, EXT2_IOC_GETFLAGS, &f) < 0) { 5588bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o retval = errno; 5598bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o goto errout; 5608bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o } 5618bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o f |= EXT2_NODUMP_FL | EXT2_IMMUTABLE_FL; 562349a484a57ab13fed315f72552bdf8dbf89ba72aTheodore Ts'o retval = ioctl(fd, EXT2_IOC_SETFLAGS, &f); 563349a484a57ab13fed315f72552bdf8dbf89ba72aTheodore Ts'o#endif 564349a484a57ab13fed315f72552bdf8dbf89ba72aTheodore Ts'o#endif 5658bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o if (retval) { 5668bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o retval = errno; 567b23520d0501095dee715d0829c365933c216e612Theodore Ts'o goto errout; 5688bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o } 569efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5708bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o if (close(fd) < 0) { 5718bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o retval = errno; 5728bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o fd = -1; 5738bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o goto errout; 5748bafedbf4a6889b20e119a667fc243909d283f85Theodore Ts'o } 5754becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o journal_ino = st.st_ino; 5764becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o } else { 577cef2ac104d45c351344cd10ac1419ad5f6422d8bTheodore Ts'o if ((mount_flags & EXT2_MF_BUSY) && 578cef2ac104d45c351344cd10ac1419ad5f6422d8bTheodore Ts'o !(fs->flags & EXT2_FLAG_EXCLUSIVE)) { 57929af314d3fd4cb907a4f474645e04bd26ba66f5fTheodore Ts'o retval = EBUSY; 58029af314d3fd4cb907a4f474645e04bd26ba66f5fTheodore Ts'o goto errout; 58129af314d3fd4cb907a4f474645e04bd26ba66f5fTheodore Ts'o } 5824becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o journal_ino = EXT2_JOURNAL_INO; 5834becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o if ((retval = write_journal_inode(fs, journal_ino, 584e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall num_blocks, flags))) 5854becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o return retval; 5864becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o } 587efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5884becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o fs->super->s_journal_inum = journal_ino; 5894becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o fs->super->s_journal_dev = 0; 5904becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o memset(fs->super->s_journal_uuid, 0, 5914becab6824aa5fdb022a293ae0b4622784496256Theodore Ts'o sizeof(fs->super->s_journal_uuid)); 592d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o fs->super->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 593d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 594d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o ext2fs_mark_super_dirty(fs); 595d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o return 0; 596b23520d0501095dee715d0829c365933c216e612Theodore Ts'oerrout: 597e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (fd >= 0) 5989b9a780f5a5823865f62f0c9fd194d262f63a06fTheodore Ts'o close(fd); 599b23520d0501095dee715d0829c365933c216e612Theodore Ts'o return retval; 600d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o} 601d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 602d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#ifdef DEBUG 603d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'omain(int argc, char **argv) 604d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o{ 605d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o errcode_t retval; 606d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o char *device_name; 607e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall ext2_filsys fs; 608d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 609d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (argc < 2) { 610d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o fprintf(stderr, "Usage: %s filesystem\n", argv[0]); 611d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o exit(1); 612d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 613d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o device_name = argv[1]; 614efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 615d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o retval = ext2fs_open (device_name, EXT2_FLAG_RW, 0, 0, 616d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o unix_io_manager, &fs); 617d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (retval) { 618d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o com_err(argv[0], retval, "while opening %s", device_name); 619d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o exit(1); 620d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 621d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o 622e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = ext2fs_add_journal_inode(fs, 1024, 0); 623d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (retval) { 624d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o com_err(argv[0], retval, "while adding journal to %s", 625d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o device_name); 626d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o exit(1); 627d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 628d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o retval = ext2fs_flush(fs); 629d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o if (retval) { 630d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o printf("Warning, had trouble writing out superblocks.\n"); 631d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o } 632d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o ext2fs_close(fs); 633d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o exit(0); 634efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 635d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o} 636d3cd93cabeac8c153c8ae7b1b7358d6ced86b15eTheodore Ts'o#endif 637