1 /* $NetBSD: preen.c,v 1.18 1998/07/26 20:02:36 mycroft Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 1990, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD$ 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)preen.c 8.5 (Berkeley) 4/28/95"; 40 #else 41 __RCSID("$NetBSD: preen.c,v 1.18 1998/07/26 20:02:36 mycroft Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/stat.h> 47 #include <sys/wait.h> 48 #include <sys/queue.h> 49 50 #include <err.h> 51 #include <ctype.h> 52 #include <fstab.h> 53 #include <string.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <unistd.h> 57 58 #include "fsutil.h" 59 60 struct partentry { 61 TAILQ_ENTRY(partentry) p_entries; 62 char *p_devname; /* device name */ 63 char *p_mntpt; /* mount point */ 64 char *p_type; /* file system type */ 65 }; 66 67 static TAILQ_HEAD(part, partentry) badh; 68 69 struct diskentry { 70 TAILQ_ENTRY(diskentry) d_entries; 71 char *d_name; /* disk base name */ 72 TAILQ_HEAD(prt, partentry) d_part; /* list of partitions on disk */ 73 int d_pid; /* 0 or pid of fsck proc */ 74 }; 75 76 static TAILQ_HEAD(disk, diskentry) diskh; 77 78 static int nrun = 0, ndisks = 0; 79 80 static struct diskentry *finddisk(const char *); 81 static void addpart(const char *, const char *, const char *); 82 static int startdisk(struct diskentry *, 83 int (*)(const char *, const char *, const char *, const char *, pid_t *)); 84 static void printpart(void); 85 86 int 87 checkfstab(int flags, int (*docheck)(struct fstab *), 88 int (*checkit)(const char *, const char *, const char *, const char *, pid_t *)) 89 { 90 struct fstab *fs; 91 struct diskentry *d, *nextdisk; 92 struct partentry *p; 93 int ret, pid, retcode, passno, sumstatus, status, nextpass; 94 const char *name; 95 96 TAILQ_INIT(&badh); 97 TAILQ_INIT(&diskh); 98 99 sumstatus = 0; 100 101 nextpass = 0; 102 for (passno = 1; nextpass != INT_MAX; passno = nextpass) { 103 if (flags & CHECK_DEBUG) 104 printf("pass %d\n", passno); 105 106 nextpass = INT_MAX; 107 if (setfsent() == 0) { 108 warnx("Can't open checklist file: %s\n", _PATH_FSTAB); 109 return (8); 110 } 111 while ((fs = getfsent()) != NULL) { 112 name = fs->fs_spec; 113 if (fs->fs_passno > passno && fs->fs_passno < nextpass) 114 nextpass = fs->fs_passno; 115 116 if (passno != fs->fs_passno) 117 continue; 118 119 if ((*docheck)(fs) == 0) 120 continue; 121 122 if (flags & CHECK_DEBUG) 123 printf("pass %d, name %s\n", passno, name); 124 125 if ((flags & CHECK_PREEN) == 0 || passno == 1 || 126 (flags & DO_BACKGRD) != 0) { 127 if (name == NULL) { 128 if (flags & CHECK_PREEN) 129 return 8; 130 else 131 continue; 132 } 133 sumstatus = (*checkit)(fs->fs_vfstype, 134 name, fs->fs_file, NULL, NULL); 135 136 if (sumstatus) 137 return (sumstatus); 138 continue; 139 } 140 if (name == NULL) { 141 (void) fprintf(stderr, 142 "BAD DISK NAME %s\n", fs->fs_spec); 143 sumstatus |= 8; 144 continue; 145 } 146 addpart(fs->fs_vfstype, name, fs->fs_file); 147 } 148 149 if ((flags & CHECK_PREEN) == 0 || passno == 1 || 150 (flags & DO_BACKGRD) != 0) 151 continue; 152 153 if (flags & CHECK_DEBUG) { 154 printf("Parallel start\n"); 155 printpart(); 156 } 157 158 TAILQ_FOREACH(nextdisk, &diskh, d_entries) { 159 if ((ret = startdisk(nextdisk, checkit)) != 0) 160 return ret; 161 } 162 163 if (flags & CHECK_DEBUG) 164 printf("Parallel wait\n"); 165 while ((pid = wait(&status)) != -1) { 166 TAILQ_FOREACH(d, &diskh, d_entries) 167 if (d->d_pid == pid) 168 break; 169 170 if (d == NULL) { 171 warnx("Unknown pid %d\n", pid); 172 continue; 173 } 174 175 if (WIFEXITED(status)) 176 retcode = WEXITSTATUS(status); 177 else 178 retcode = 0; 179 180 p = TAILQ_FIRST(&d->d_part); 181 182 if (flags & (CHECK_DEBUG|CHECK_VERBOSE)) 183 (void) printf("done %s: %s (%s) = 0x%x\n", 184 p->p_type, p->p_devname, p->p_mntpt, 185 status); 186 187 if (WIFSIGNALED(status)) { 188 (void) fprintf(stderr, 189 "%s: %s (%s): EXITED WITH SIGNAL %d\n", 190 p->p_type, p->p_devname, p->p_mntpt, 191 WTERMSIG(status)); 192 retcode = 8; 193 } 194 195 TAILQ_REMOVE(&d->d_part, p, p_entries); 196 197 if (retcode != 0) { 198 TAILQ_INSERT_TAIL(&badh, p, p_entries); 199 sumstatus |= retcode; 200 } else { 201 free(p->p_type); 202 free(p->p_devname); 203 free(p); 204 } 205 d->d_pid = 0; 206 nrun--; 207 208 if (TAILQ_EMPTY(&d->d_part)) { 209 TAILQ_REMOVE(&diskh, d, d_entries); 210 ndisks--; 211 } else { 212 if ((ret = startdisk(d, checkit)) != 0) 213 return ret; 214 } 215 } 216 if (flags & CHECK_DEBUG) { 217 printf("Parallel end\n"); 218 printpart(); 219 } 220 } 221 222 if (!(flags & CHECK_PREEN)) 223 return 0; 224 225 if (sumstatus) { 226 p = TAILQ_FIRST(&badh); 227 if (p == NULL) 228 return (sumstatus); 229 230 (void) fprintf(stderr, 231 "THE FOLLOWING FILE SYSTEM%s HAD AN %s\n\t", 232 TAILQ_NEXT(p, p_entries) ? "S" : "", 233 "UNEXPECTED INCONSISTENCY:"); 234 235 for (; p; p = TAILQ_NEXT(p, p_entries)) 236 (void) fprintf(stderr, 237 "%s: %s (%s)%s", p->p_type, p->p_devname, 238 p->p_mntpt, TAILQ_NEXT(p, p_entries) ? ", " : "\n"); 239 240 return sumstatus; 241 } 242 (void) endfsent(); 243 return (0); 244 } 245 246 247 static struct diskentry * 248 finddisk(const char *name) 249 { 250 const char *p; 251 size_t len = 0; 252 struct diskentry *d; 253 254 p = strrchr(name, '/'); 255 if (p == NULL) 256 p = name; 257 else 258 p++; 259 for (; *p && !isdigit(*p); p++) 260 continue; 261 for (; *p && isdigit(*p); p++) 262 continue; 263 len = p - name; 264 if (len == 0) 265 len = strlen(name); 266 267 TAILQ_FOREACH(d, &diskh, d_entries) 268 if (strncmp(d->d_name, name, len) == 0 && d->d_name[len] == 0) 269 return d; 270 271 d = emalloc(sizeof(*d)); 272 d->d_name = estrdup(name); 273 d->d_name[len] = '\0'; 274 TAILQ_INIT(&d->d_part); 275 d->d_pid = 0; 276 277 TAILQ_INSERT_TAIL(&diskh, d, d_entries); 278 ndisks++; 279 280 return d; 281 } 282 283 284 static void 285 printpart(void) 286 { 287 struct diskentry *d; 288 struct partentry *p; 289 290 TAILQ_FOREACH(d, &diskh, d_entries) { 291 (void) printf("disk %s: ", d->d_name); 292 TAILQ_FOREACH(p, &d->d_part, p_entries) 293 (void) printf("%s ", p->p_devname); 294 (void) printf("\n"); 295 } 296 } 297 298 299 static void 300 addpart(const char *type, const char *dev, const char *mntpt) 301 { 302 struct diskentry *d = finddisk(dev); 303 struct partentry *p; 304 305 TAILQ_FOREACH(p, &d->d_part, p_entries) 306 if (strcmp(p->p_devname, dev) == 0) { 307 warnx("%s in fstab more than once!\n", dev); 308 return; 309 } 310 311 p = emalloc(sizeof(*p)); 312 p->p_devname = estrdup(dev); 313 p->p_mntpt = estrdup(mntpt); 314 p->p_type = estrdup(type); 315 316 TAILQ_INSERT_TAIL(&d->d_part, p, p_entries); 317 } 318 319 320 static int 321 startdisk(struct diskentry *d, int (*checkit)(const char *, const char *, 322 const char *, const char *, pid_t *)) 323 { 324 struct partentry *p = TAILQ_FIRST(&d->d_part); 325 int rv; 326 327 while ((rv = (*checkit)(p->p_type, p->p_devname, p->p_mntpt, 328 NULL, &d->d_pid)) != 0 && nrun > 0) 329 sleep(10); 330 331 if (rv == 0) 332 nrun++; 333 334 return rv; 335 } 336