1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause AND BSD-2-Clause 3 * 4 * Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * Copyright (c) 1982, 1986, 1989, 1993 29 * The Regents of the University of California. All rights reserved. 30 * 31 * Redistribution and use in source and binary forms, with or without 32 * modification, are permitted provided that the following conditions 33 * are met: 34 * 1. Redistributions of source code must retain the above copyright 35 * notice, this list of conditions and the following disclaimer. 36 * 2. Redistributions in binary form must reproduce the above copyright 37 * notice, this list of conditions and the following disclaimer in the 38 * documentation and/or other materials provided with the distribution. 39 * 3. Neither the name of the University nor the names of its contributors 40 * may be used to endorse or promote products derived from this software 41 * without specific prior written permission. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 */ 55 56 #include <sys/cdefs.h> 57 #include <string.h> 58 #include <sys/stat.h> 59 #include <ufs/ffs/fs.h> 60 #include "fsck.h" 61 62 void 63 gjournal_check(const char *filesys) 64 { 65 struct fs *fs; 66 struct inode ip; 67 union dinode *dp; 68 struct bufarea *cgbp; 69 struct cg *cgp; 70 struct inodesc idesc; 71 uint8_t *inosused; 72 ino_t cino, ino; 73 int cg; 74 75 fs = &sblock; 76 /* Are there any unreferenced inodes in this file system? */ 77 if (fs->fs_unrefs == 0) { 78 sbdirty(); 79 ckfini(1); 80 return; 81 } 82 83 for (cg = 0; cg < fs->fs_ncg; cg++) { 84 /* Show progress if requested. */ 85 if (got_siginfo) { 86 printf("%s: phase j: cyl group %d of %d (%d%%)\n", 87 cdevname, cg, fs->fs_ncg, cg * 100 / fs->fs_ncg); 88 got_siginfo = 0; 89 } 90 if (got_sigalarm) { 91 setproctitle("%s pj %d%%", cdevname, 92 cg * 100 / fs->fs_ncg); 93 got_sigalarm = 0; 94 } 95 cgbp = cglookup(cg); 96 cgp = cgbp->b_un.b_cg; 97 if (!check_cgmagic(cg, cgbp)) { 98 rerun = 1; 99 ckfini(0); 100 return; 101 } 102 /* Are there any unreferenced inodes in this cylinder group? */ 103 if (cgp->cg_unrefs == 0) 104 continue; 105 /* 106 * Now go through the list of all inodes in this cylinder group 107 * to find unreferenced ones. 108 */ 109 inosused = cg_inosused(cgp); 110 for (cino = 0; cino < fs->fs_ipg; cino++) { 111 ino = fs->fs_ipg * cg + cino; 112 /* Unallocated? Skip it. */ 113 if (isclr(inosused, cino)) 114 continue; 115 ginode(ino, &ip); 116 dp = ip.i_dp; 117 /* Not a regular file nor directory? Skip it. */ 118 if (!S_ISREG(dp->dp2.di_mode) && 119 !S_ISDIR(dp->dp2.di_mode)) { 120 irelse(&ip); 121 continue; 122 } 123 /* Has reference(s)? Skip it. */ 124 if (dp->dp2.di_nlink > 0) { 125 irelse(&ip); 126 continue; 127 } 128 /* printf("Clearing inode=%d (size=%jd)\n", ino, 129 (intmax_t)dp->dp2->di_size); */ 130 /* Deallocate it. */ 131 memset(&idesc, 0, sizeof(struct inodesc)); 132 idesc.id_type = ADDR; 133 idesc.id_func = freeblock; 134 idesc.id_number = ino; 135 clri(&idesc, "UNREF", 1); 136 clrbit(inosused, cino); 137 /* Update position of last used inode. */ 138 if (ino < cgp->cg_irotor) 139 cgp->cg_irotor = ino; 140 /* Update statistics. */ 141 cgp->cg_unrefs--; 142 fs->fs_unrefs--; 143 /* Zero-fill the inode. */ 144 dp->dp2 = zino.dp2; 145 /* Write the inode back. */ 146 inodirty(&ip); 147 irelse(&ip); 148 cgdirty(cgbp); 149 if (cgp->cg_unrefs == 0) 150 break; 151 } 152 /* 153 * If there are no more unreferenced inodes, there is no 154 * need to check other cylinder groups. 155 */ 156 if (fs->fs_unrefs == 0) 157 break; 158 } 159 /* Write back updated statistics and super-block. */ 160 sbdirty(); 161 ckfini(1); 162 } 163