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