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