1 /* $NetBSD: preen.c,v 1.13 1996/09/23 16:11:35 christos 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 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)preen.c 8.3 (Berkeley) 12/6/94"; 39 #else 40 static char rcsid[] = "$NetBSD: preen.c,v 1.13 1996/09/23 16:11:35 christos Exp $"; 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/stat.h> 46 #include <sys/wait.h> 47 #include <sys/queue.h> 48 49 #include <fstab.h> 50 #include <string.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <ctype.h> 54 #include <unistd.h> 55 #include <err.h> 56 57 #include "util.h" 58 #include "extern.h" 59 60 struct partentry { 61 TAILQ_ENTRY(partentry) p_entries; 62 char *p_name; /* device name */ 63 char *p_type; /* filesystem type */ 64 }; 65 66 TAILQ_HEAD(part, partentry) badh; 67 68 struct diskentry { 69 TAILQ_ENTRY(diskentry) d_entries; 70 char *d_name; /* disk base name */ 71 TAILQ_HEAD(prt, partentry) d_part; /* list of partitions on disk */ 72 int d_pid; /* 0 or pid of fsck proc */ 73 }; 74 75 TAILQ_HEAD(disk, diskentry) diskh; 76 77 static int nrun = 0, ndisks = 0; 78 79 static struct diskentry *finddisk __P((const char *)); 80 static void addpart __P((const char *, const char *)); 81 static int startdisk __P((struct diskentry *, 82 int (*)(const char *, const char *, pid_t *))); 83 #ifdef DEBUG 84 static void printpart __P((void)); 85 #endif 86 87 int 88 checkfstab(preen, maxrun, docheck, chkit) 89 int preen, maxrun; 90 int (*docheck) __P((struct fstab *)); 91 int (*chkit) __P((const char *, const char *, pid_t *)); 92 { 93 struct fstab *fs; 94 struct diskentry *d, *nextdisk; 95 struct partentry *p; 96 int ret, pid, retcode, passno, sumstatus, status; 97 char *name; 98 99 TAILQ_INIT(&badh); 100 TAILQ_INIT(&diskh); 101 102 sumstatus = 0; 103 104 for (passno = 1; passno <= 2; passno++) { 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 if ((*docheck)(fs) == 0) 111 continue; 112 113 name = blockcheck(fs->fs_spec); 114 #ifdef DEBUG 115 if (debug > 1) 116 printf("pass %d, name %s\n", passno, name); 117 #endif 118 119 if (preen == 0 || (passno == 1 && fs->fs_passno == 1)) { 120 if (name == NULL) { 121 if (preen) 122 return 8; 123 else 124 continue; 125 } 126 sumstatus = (*chkit)(fs->fs_vfstype, 127 name, NULL); 128 129 if (sumstatus) 130 return (sumstatus); 131 } else if (passno == 2 && fs->fs_passno > 1) { 132 if (name == NULL) { 133 (void) fprintf(stderr, 134 "BAD DISK NAME %s\n", fs->fs_spec); 135 sumstatus |= 8; 136 continue; 137 } 138 addpart(fs->fs_vfstype, name); 139 } 140 } 141 if (preen == 0) 142 return (0); 143 } 144 145 #ifdef DEBUG 146 if (debug > 1) 147 printpart(); 148 #endif 149 150 if (preen) { 151 if (maxrun == 0) 152 maxrun = ndisks; 153 if (maxrun > ndisks) 154 maxrun = ndisks; 155 nextdisk = diskh.tqh_first; 156 for (passno = 0; passno < maxrun; ++passno) { 157 if ((ret = startdisk(nextdisk, chkit)) != 0) 158 return ret; 159 nextdisk = nextdisk->d_entries.tqe_next; 160 } 161 162 while ((pid = wait(&status)) != -1) { 163 for (d = diskh.tqh_first; d; d = d->d_entries.tqe_next) 164 if (d->d_pid == pid) 165 break; 166 167 if (d == NULL) { 168 warnx("Unknown pid %d\n", pid); 169 continue; 170 } 171 172 173 if (WIFEXITED(status)) 174 retcode = WEXITSTATUS(status); 175 else 176 retcode = 0; 177 178 p = d->d_part.tqh_first; 179 180 if (debug || verbose) 181 (void) printf("done %s(%s) = %x\n", p->p_name, 182 p->p_type, status); 183 184 if (WIFSIGNALED(status)) { 185 (void) fprintf(stderr, 186 "%s (%s): EXITED WITH SIGNAL %d\n", 187 p->p_name, p->p_type, WTERMSIG(status)); 188 retcode = 8; 189 } 190 191 TAILQ_REMOVE(&d->d_part, p, p_entries); 192 193 if (retcode != 0) { 194 TAILQ_INSERT_TAIL(&badh, p, p_entries); 195 sumstatus |= retcode; 196 } else { 197 free(p->p_type); 198 free(p->p_name); 199 free(p); 200 } 201 d->d_pid = 0; 202 nrun--; 203 204 if (d->d_part.tqh_first == NULL) 205 ndisks--; 206 207 if (nextdisk == NULL) { 208 if (d->d_part.tqh_first) { 209 if ((ret = startdisk(d, chkit)) != 0) 210 return ret; 211 } 212 } else if (nrun < maxrun && nrun < ndisks) { 213 for ( ;; ) { 214 nextdisk = nextdisk->d_entries.tqe_next; 215 if (nextdisk == NULL) 216 nextdisk = diskh.tqh_first; 217 if (nextdisk->d_part.tqh_first != NULL 218 && nextdisk->d_pid == 0) 219 break; 220 } 221 if ((ret = startdisk(nextdisk, chkit)) != 0) 222 return ret; 223 } 224 } 225 } 226 if (sumstatus) { 227 p = badh.tqh_first; 228 if (p == NULL) 229 return (sumstatus); 230 231 (void) fprintf(stderr, 232 "THE FOLLOWING FILE SYSTEM%s HAD AN %s\n\t", 233 p->p_entries.tqe_next ? "S" : "", 234 "UNEXPECTED INCONSISTENCY:"); 235 236 for (; p; p = p->p_entries.tqe_next) 237 (void) fprintf(stderr, 238 "%s (%s)%s", p->p_name, p->p_type, 239 p->p_entries.tqe_next ? ", " : "\n"); 240 241 return sumstatus; 242 } 243 (void) endfsent(); 244 return (0); 245 } 246 247 248 static struct diskentry * 249 finddisk(name) 250 const char *name; 251 { 252 const char *p; 253 size_t len; 254 struct diskentry *d; 255 256 for (p = name + strlen(name) - 1; p >= name; --p) 257 if (isdigit(*p)) { 258 len = p - name + 1; 259 break; 260 } 261 262 if (p < name) 263 len = strlen(name); 264 265 for (d = diskh.tqh_first; d != NULL; d = d->d_entries.tqe_next) 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 #ifdef DEBUG 283 static void 284 printpart() 285 { 286 struct diskentry *d; 287 struct partentry *p; 288 289 for (d = diskh.tqh_first; d != NULL; d = d->d_entries.tqe_next) { 290 (void) printf("disk %s: ", d->d_name); 291 for (p = d->d_part.tqh_first; p != NULL; 292 p = p->p_entries.tqe_next) 293 (void) printf("%s ", p->p_name); 294 (void) printf("\n"); 295 } 296 } 297 #endif 298 299 300 static void 301 addpart(type, name) 302 const char *type, *name; 303 { 304 struct diskentry *d = finddisk(name); 305 struct partentry *p; 306 307 for (p = d->d_part.tqh_first; p != NULL; p = p->p_entries.tqe_next) 308 if (strcmp(p->p_name, name) == 0) { 309 warnx("%s in fstab more than once!\n", name); 310 return; 311 } 312 313 p = emalloc(sizeof(*p)); 314 p->p_name = estrdup(name); 315 p->p_type = estrdup(type); 316 317 TAILQ_INSERT_TAIL(&d->d_part, p, p_entries); 318 } 319 320 321 static int 322 startdisk(d, checkit) 323 register struct diskentry *d; 324 int (*checkit) __P((const char *, const char *, pid_t *)); 325 { 326 register struct partentry *p = d->d_part.tqh_first; 327 int rv; 328 329 while ((rv = (*checkit)(p->p_type, p->p_name, &d->d_pid)) != 0 && 330 nrun > 0) 331 sleep(10); 332 333 if (rv == 0) 334 nrun++; 335 336 return rv; 337 } 338