1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1991, 1993, 1994 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. 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 32 #if 0 33 #ifndef lint 34 static const char copyright[] = 35 "@(#) Copyright (c) 1991, 1993, 1994\n\ 36 The Regents of the University of California. All rights reserved.\n"; 37 #endif /* not lint */ 38 39 #ifndef lint 40 static char sccsid[] = "@(#)pwd_mkdb.c 8.5 (Berkeley) 4/20/94"; 41 #endif /* not lint */ 42 #endif 43 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #include <sys/param.h> 48 #include <sys/endian.h> 49 #include <sys/stat.h> 50 #include <arpa/inet.h> 51 52 #include <db.h> 53 #include <err.h> 54 #include <errno.h> 55 #include <fcntl.h> 56 #include <libgen.h> 57 #include <limits.h> 58 #include <pwd.h> 59 #include <signal.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <unistd.h> 64 65 #include "pw_scan.h" 66 67 #define INSECURE 1 68 #define SECURE 2 69 #define PERM_INSECURE (S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) 70 #define PERM_SECURE (S_IRUSR|S_IWUSR) 71 #define LEGACY_VERSION(x) _PW_VERSIONED(x, 3) 72 #define CURRENT_VERSION(x) _PW_VERSIONED(x, 4) 73 74 static HASHINFO openinfo = { 75 4096, /* bsize */ 76 32, /* ffactor */ 77 256, /* nelem */ 78 2048 * 1024, /* cachesize */ 79 NULL, /* hash() */ 80 BIG_ENDIAN /* lorder */ 81 }; 82 83 static enum state { FILE_INSECURE, FILE_SECURE, FILE_ORIG } clean; 84 static struct passwd pwd; /* password structure */ 85 static char *pname; /* password file name */ 86 static char prefix[MAXPATHLEN]; 87 88 static int is_comment; /* flag for comments */ 89 static char line[LINE_MAX]; 90 91 void cleanup(void); 92 void error(const char *); 93 void cp(char *, char *, mode_t mode); 94 void mv(char *, char *); 95 int scan(FILE *, struct passwd *); 96 static void usage(void); 97 98 int 99 main(int argc, char *argv[]) 100 { 101 static char verskey[] = _PWD_VERSION_KEY; 102 char version = _PWD_CURRENT_VERSION; 103 DB *dp, *sdp, *pw_db; 104 DBT data, sdata, key; 105 FILE *fp, *oldfp; 106 sigset_t set; 107 int ch, cnt, ypcnt, makeold, tfd, yp_enabled = 0; 108 unsigned int len; 109 uint32_t store; 110 const char *t; 111 char *p; 112 char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024]; 113 char sbuf[MAX(MAXPATHLEN, LINE_MAX * 2)]; 114 char buf2[MAXPATHLEN]; 115 char sbuf2[MAXPATHLEN]; 116 char *username; 117 u_int method, methoduid; 118 int Cflag, dflag, iflag; 119 int nblock = 0; 120 121 iflag = dflag = Cflag = 0; 122 strcpy(prefix, _PATH_PWD); 123 makeold = 0; 124 username = NULL; 125 oldfp = NULL; 126 while ((ch = getopt(argc, argv, "BCLNd:ips:u:v")) != -1) 127 switch(ch) { 128 case 'B': /* big-endian output */ 129 warnx("endiannes options (-B/-L) are deprecated"); 130 openinfo.lorder = BIG_ENDIAN; 131 break; 132 case 'C': /* verify only */ 133 Cflag = 1; 134 break; 135 case 'L': /* little-endian output */ 136 warnx("endiannes options (-B/-L) are deprecated"); 137 openinfo.lorder = LITTLE_ENDIAN; 138 break; 139 case 'N': /* do not wait for lock */ 140 nblock = LOCK_NB; /* will fail if locked */ 141 break; 142 case 'd': 143 dflag++; 144 strlcpy(prefix, optarg, sizeof(prefix)); 145 break; 146 case 'i': 147 iflag++; 148 break; 149 case 'p': /* create V7 "file.orig" */ 150 makeold = 1; 151 break; 152 case 's': /* change default cachesize */ 153 openinfo.cachesize = atoi(optarg) * 1024 * 1024; 154 break; 155 case 'u': /* only update this record */ 156 username = optarg; 157 break; 158 case 'v': /* backward compatible */ 159 break; 160 default: 161 usage(); 162 } 163 argc -= optind; 164 argv += optind; 165 166 if (argc != 1 || (username && (*username == '+' || *username == '-'))) 167 usage(); 168 169 /* 170 * This could be changed to allow the user to interrupt. 171 * Probably not worth the effort. 172 */ 173 sigemptyset(&set); 174 sigaddset(&set, SIGTSTP); 175 sigaddset(&set, SIGHUP); 176 sigaddset(&set, SIGINT); 177 sigaddset(&set, SIGQUIT); 178 sigaddset(&set, SIGTERM); 179 (void)sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL); 180 181 /* We don't care what the user wants. */ 182 (void)umask(0); 183 184 pname = *argv; 185 186 /* 187 * Open and lock the original password file. We have to check 188 * the hardlink count after we get the lock to handle any potential 189 * unlink/rename race. 190 * 191 * This lock is necessary when someone runs pwd_mkdb manually, directly 192 * on master.passwd, to handle the case where a user might try to 193 * change his password while pwd_mkdb is running. 194 */ 195 for (;;) { 196 struct stat st; 197 198 if (!(fp = fopen(pname, "r"))) 199 error(pname); 200 if (flock(fileno(fp), LOCK_EX|nblock) < 0 && !(dflag && iflag)) 201 error("flock"); 202 if (fstat(fileno(fp), &st) < 0) 203 error(pname); 204 if (st.st_nlink != 0) 205 break; 206 fclose(fp); 207 fp = NULL; 208 } 209 210 /* check only if password database is valid */ 211 if (Cflag) { 212 while (scan(fp, &pwd)) 213 if (!is_comment && strlen(pwd.pw_name) >= MAXLOGNAME) { 214 warnx("%s: username too long", pwd.pw_name); 215 exit(1); 216 } 217 exit(0); 218 } 219 220 /* Open the temporary insecure password database. */ 221 (void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _MP_DB); 222 (void)snprintf(sbuf, sizeof(sbuf), "%s/%s.tmp", prefix, _SMP_DB); 223 if (username) { 224 int use_version; 225 226 (void)snprintf(buf2, sizeof(buf2), "%s/%s", prefix, _MP_DB); 227 (void)snprintf(sbuf2, sizeof(sbuf2), "%s/%s", prefix, _SMP_DB); 228 229 clean = FILE_INSECURE; 230 cp(buf2, buf, PERM_INSECURE); 231 dp = dbopen(buf, 232 O_RDWR|O_EXCL, PERM_INSECURE, DB_HASH, &openinfo); 233 if (dp == NULL) 234 error(buf); 235 236 clean = FILE_SECURE; 237 cp(sbuf2, sbuf, PERM_SECURE); 238 sdp = dbopen(sbuf, 239 O_RDWR|O_EXCL, PERM_SECURE, DB_HASH, &openinfo); 240 if (sdp == NULL) 241 error(sbuf); 242 243 /* 244 * Do some trouble to check if we should store this users 245 * uid. Don't use getpwnam/getpwuid as that interferes 246 * with NIS. 247 */ 248 pw_db = dbopen(_PATH_MP_DB, O_RDONLY, 0, DB_HASH, NULL); 249 if (!pw_db) 250 error(_MP_DB); 251 252 key.data = verskey; 253 key.size = sizeof(verskey)-1; 254 if ((pw_db->get)(pw_db, &key, &data, 0) == 0) 255 use_version = *(unsigned char *)data.data; 256 else 257 use_version = 3; 258 buf[0] = _PW_VERSIONED(_PW_KEYBYNAME, use_version); 259 len = strlen(username); 260 261 /* Only check that username fits in buffer */ 262 memmove(buf + 1, username, MIN(len, sizeof(buf) - 1)); 263 key.data = (u_char *)buf; 264 key.size = len + 1; 265 if ((pw_db->get)(pw_db, &key, &data, 0) == 0) { 266 p = (char *)data.data; 267 268 /* jump over pw_name and pw_passwd, to get to pw_uid */ 269 while (*p++) 270 ; 271 while (*p++) 272 ; 273 274 buf[0] = _PW_VERSIONED(_PW_KEYBYUID, use_version); 275 memmove(buf + 1, p, sizeof(store)); 276 key.data = (u_char *)buf; 277 key.size = sizeof(store) + 1; 278 279 if ((pw_db->get)(pw_db, &key, &data, 0) == 0) { 280 /* First field of data.data holds pw_pwname */ 281 if (!strcmp(data.data, username)) 282 methoduid = 0; 283 else 284 methoduid = R_NOOVERWRITE; 285 } else { 286 methoduid = R_NOOVERWRITE; 287 } 288 } else { 289 methoduid = R_NOOVERWRITE; 290 } 291 if ((pw_db->close)(pw_db)) 292 error("close pw_db"); 293 method = 0; 294 } else { 295 dp = dbopen(buf, 296 O_RDWR|O_CREAT|O_EXCL, PERM_INSECURE, DB_HASH, &openinfo); 297 if (dp == NULL) 298 error(buf); 299 clean = FILE_INSECURE; 300 301 sdp = dbopen(sbuf, 302 O_RDWR|O_CREAT|O_EXCL, PERM_SECURE, DB_HASH, &openinfo); 303 if (sdp == NULL) 304 error(sbuf); 305 clean = FILE_SECURE; 306 307 method = R_NOOVERWRITE; 308 methoduid = R_NOOVERWRITE; 309 } 310 311 /* 312 * Open file for old password file. Minor trickiness -- don't want to 313 * chance the file already existing, since someone (stupidly) might 314 * still be using this for permission checking. So, open it first and 315 * fdopen the resulting fd. The resulting file should be readable by 316 * everyone. 317 */ 318 if (makeold) { 319 (void)snprintf(buf, sizeof(buf), "%s.orig", pname); 320 if ((tfd = open(buf, 321 O_WRONLY|O_CREAT|O_EXCL, PERM_INSECURE)) < 0) 322 error(buf); 323 if ((oldfp = fdopen(tfd, "w")) == NULL) 324 error(buf); 325 clean = FILE_ORIG; 326 } 327 328 /* 329 * The databases actually contain three copies of the original data. 330 * Each password file entry is converted into a rough approximation 331 * of a ``struct passwd'', with the strings placed inline. This 332 * object is then stored as the data for three separate keys. The 333 * first key * is the pw_name field prepended by the _PW_KEYBYNAME 334 * character. The second key is the pw_uid field prepended by the 335 * _PW_KEYBYUID character. The third key is the line number in the 336 * original file prepended by the _PW_KEYBYNUM character. (The special 337 * characters are prepended to ensure that the keys do not collide.) 338 */ 339 /* In order to transition this file into a machine-independent 340 * form, we have to change the format of entries. However, since 341 * older binaries will still expect the old MD format entries, we 342 * create those as usual and use versioned tags for the new entries. 343 */ 344 if (username == NULL) { 345 /* Do not add the VERSION tag when updating a single 346 * user. When operating on `old format' databases, this 347 * would result in applications `seeing' only the updated 348 * entries. 349 */ 350 key.data = verskey; 351 key.size = sizeof(verskey)-1; 352 data.data = &version; 353 data.size = 1; 354 if ((dp->put)(dp, &key, &data, 0) == -1) 355 error("put"); 356 if ((sdp->put)(sdp, &key, &data, 0) == -1) 357 error("put"); 358 } 359 ypcnt = 0; 360 data.data = (u_char *)buf; 361 sdata.data = (u_char *)sbuf; 362 key.data = (u_char *)tbuf; 363 for (cnt = 1; scan(fp, &pwd); ++cnt) { 364 if (!is_comment && 365 (pwd.pw_name[0] == '+' || pwd.pw_name[0] == '-')) { 366 yp_enabled = 1; 367 ypcnt++; 368 } 369 if (is_comment) 370 --cnt; 371 #define COMPACT(e) t = e; while ((*p++ = *t++)); 372 #define SCALAR(e) store = htonl((uint32_t)(e)); \ 373 memmove(p, &store, sizeof(store)); \ 374 p += sizeof(store); 375 #define LSCALAR(e) store = HTOL((uint32_t)(e)); \ 376 memmove(p, &store, sizeof(store)); \ 377 p += sizeof(store); 378 #define HTOL(e) (openinfo.lorder == BYTE_ORDER ? \ 379 (uint32_t)(e) : \ 380 bswap32((uint32_t)(e))) 381 if (!is_comment && 382 (!username || (strcmp(username, pwd.pw_name) == 0))) { 383 /* Create insecure data. */ 384 p = buf; 385 COMPACT(pwd.pw_name); 386 COMPACT("*"); 387 SCALAR(pwd.pw_uid); 388 SCALAR(pwd.pw_gid); 389 SCALAR(pwd.pw_change); 390 COMPACT(pwd.pw_class); 391 COMPACT(pwd.pw_gecos); 392 COMPACT(pwd.pw_dir); 393 COMPACT(pwd.pw_shell); 394 SCALAR(pwd.pw_expire); 395 SCALAR(pwd.pw_fields); 396 data.size = p - buf; 397 398 /* Create secure data. */ 399 p = sbuf; 400 COMPACT(pwd.pw_name); 401 COMPACT(pwd.pw_passwd); 402 SCALAR(pwd.pw_uid); 403 SCALAR(pwd.pw_gid); 404 SCALAR(pwd.pw_change); 405 COMPACT(pwd.pw_class); 406 COMPACT(pwd.pw_gecos); 407 COMPACT(pwd.pw_dir); 408 COMPACT(pwd.pw_shell); 409 SCALAR(pwd.pw_expire); 410 SCALAR(pwd.pw_fields); 411 sdata.size = p - sbuf; 412 413 /* Store insecure by name. */ 414 tbuf[0] = CURRENT_VERSION(_PW_KEYBYNAME); 415 len = strlen(pwd.pw_name); 416 memmove(tbuf + 1, pwd.pw_name, len); 417 key.size = len + 1; 418 if ((dp->put)(dp, &key, &data, method) == -1) 419 error("put"); 420 421 /* Store insecure by number. */ 422 tbuf[0] = CURRENT_VERSION(_PW_KEYBYNUM); 423 store = htonl(cnt); 424 memmove(tbuf + 1, &store, sizeof(store)); 425 key.size = sizeof(store) + 1; 426 if ((dp->put)(dp, &key, &data, method) == -1) 427 error("put"); 428 429 /* Store insecure by uid. */ 430 tbuf[0] = CURRENT_VERSION(_PW_KEYBYUID); 431 store = htonl(pwd.pw_uid); 432 memmove(tbuf + 1, &store, sizeof(store)); 433 key.size = sizeof(store) + 1; 434 if ((dp->put)(dp, &key, &data, methoduid) == -1) 435 error("put"); 436 437 /* Store secure by name. */ 438 tbuf[0] = CURRENT_VERSION(_PW_KEYBYNAME); 439 len = strlen(pwd.pw_name); 440 memmove(tbuf + 1, pwd.pw_name, len); 441 key.size = len + 1; 442 if ((sdp->put)(sdp, &key, &sdata, method) == -1) 443 error("put"); 444 445 /* Store secure by number. */ 446 tbuf[0] = CURRENT_VERSION(_PW_KEYBYNUM); 447 store = htonl(cnt); 448 memmove(tbuf + 1, &store, sizeof(store)); 449 key.size = sizeof(store) + 1; 450 if ((sdp->put)(sdp, &key, &sdata, method) == -1) 451 error("put"); 452 453 /* Store secure by uid. */ 454 tbuf[0] = CURRENT_VERSION(_PW_KEYBYUID); 455 store = htonl(pwd.pw_uid); 456 memmove(tbuf + 1, &store, sizeof(store)); 457 key.size = sizeof(store) + 1; 458 if ((sdp->put)(sdp, &key, &sdata, methoduid) == -1) 459 error("put"); 460 461 /* Store insecure and secure special plus and special minus */ 462 if (pwd.pw_name[0] == '+' || pwd.pw_name[0] == '-') { 463 tbuf[0] = CURRENT_VERSION(_PW_KEYYPBYNUM); 464 store = htonl(ypcnt); 465 memmove(tbuf + 1, &store, sizeof(store)); 466 key.size = sizeof(store) + 1; 467 if ((dp->put)(dp, &key, &data, method) == -1) 468 error("put"); 469 if ((sdp->put)(sdp, &key, &sdata, method) == -1) 470 error("put"); 471 } 472 } 473 /* Create original format password file entry */ 474 if (is_comment && makeold){ /* copy comments */ 475 if (fprintf(oldfp, "%s\n", line) < 0) 476 error("write old"); 477 } else if (makeold) { 478 char uidstr[20]; 479 char gidstr[20]; 480 481 snprintf(uidstr, sizeof(uidstr), "%u", pwd.pw_uid); 482 snprintf(gidstr, sizeof(gidstr), "%u", pwd.pw_gid); 483 484 if (fprintf(oldfp, "%s:*:%s:%s:%s:%s:%s\n", 485 pwd.pw_name, pwd.pw_fields & _PWF_UID ? uidstr : "", 486 pwd.pw_fields & _PWF_GID ? gidstr : "", 487 pwd.pw_gecos, pwd.pw_dir, pwd.pw_shell) < 0) 488 error("write old"); 489 } 490 } 491 /* If YP enabled, set flag. */ 492 if (yp_enabled) { 493 buf[0] = yp_enabled + 2; 494 data.size = 1; 495 key.size = 1; 496 tbuf[0] = CURRENT_VERSION(_PW_KEYYPENABLED); 497 if ((dp->put)(dp, &key, &data, method) == -1) 498 error("put"); 499 if ((sdp->put)(sdp, &key, &data, method) == -1) 500 error("put"); 501 } 502 503 if ((dp->close)(dp) == -1) 504 error("close"); 505 if ((sdp->close)(sdp) == -1) 506 error("close"); 507 if (makeold) { 508 (void)fflush(oldfp); 509 if (fclose(oldfp) == EOF) 510 error("close old"); 511 } 512 513 /* Set master.passwd permissions, in case caller forgot. */ 514 (void)fchmod(fileno(fp), S_IRUSR|S_IWUSR); 515 516 /* Install as the real password files. */ 517 (void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _MP_DB); 518 (void)snprintf(buf2, sizeof(buf2), "%s/%s", prefix, _MP_DB); 519 mv(buf, buf2); 520 (void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _SMP_DB); 521 (void)snprintf(buf2, sizeof(buf2), "%s/%s", prefix, _SMP_DB); 522 mv(buf, buf2); 523 if (makeold) { 524 (void)snprintf(buf2, sizeof(buf2), "%s/%s", prefix, _PASSWD); 525 (void)snprintf(buf, sizeof(buf), "%s.orig", pname); 526 mv(buf, buf2); 527 } 528 /* 529 * Move the master password LAST -- chpass(1), passwd(1) and vipw(8) 530 * all use flock(2) on it to block other incarnations of themselves. 531 * The rename means that everything is unlocked, as the original file 532 * can no longer be accessed. 533 */ 534 (void)snprintf(buf, sizeof(buf), "%s/%s", prefix, _MASTERPASSWD); 535 mv(pname, buf); 536 537 /* 538 * Close locked password file after rename() 539 */ 540 if (fclose(fp) == EOF) 541 error("close fp"); 542 543 exit(0); 544 } 545 546 int 547 scan(FILE *fp, struct passwd *pw) 548 { 549 static int lcnt; 550 size_t len; 551 char *p; 552 553 p = fgetln(fp, &len); 554 if (p == NULL) 555 return (0); 556 ++lcnt; 557 /* 558 * ``... if I swallow anything evil, put your fingers down my 559 * throat...'' 560 * -- The Who 561 */ 562 if (len > 0 && p[len - 1] == '\n') 563 len--; 564 if (len >= sizeof(line) - 1) { 565 warnx("line #%d too long", lcnt); 566 goto fmt; 567 } 568 memcpy(line, p, len); 569 line[len] = '\0'; 570 571 /* 572 * Ignore comments: ^[ \t]*# 573 */ 574 for (p = line; *p != '\0'; p++) 575 if (*p != ' ' && *p != '\t') 576 break; 577 if (*p == '#' || *p == '\0') { 578 is_comment = 1; 579 return(1); 580 } else 581 is_comment = 0; 582 583 if (!__pw_scan(line, pw, _PWSCAN_WARN|_PWSCAN_MASTER)) { 584 warnx("at line #%d", lcnt); 585 fmt: errno = EFTYPE; /* XXX */ 586 error(pname); 587 } 588 589 return (1); 590 } 591 592 void 593 cp(char *from, char *to, mode_t mode) 594 { 595 static char buf[MAXBSIZE]; 596 int from_fd, rcount, to_fd, wcount; 597 598 if ((from_fd = open(from, O_RDONLY, 0)) < 0) 599 error(from); 600 if ((to_fd = open(to, O_WRONLY|O_CREAT|O_EXCL, mode)) < 0) 601 error(to); 602 while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) { 603 wcount = write(to_fd, buf, rcount); 604 if (rcount != wcount || wcount == -1) { 605 int sverrno = errno; 606 607 (void)snprintf(buf, sizeof(buf), "%s to %s", from, to); 608 errno = sverrno; 609 error(buf); 610 } 611 } 612 if (rcount < 0) { 613 int sverrno = errno; 614 615 (void)snprintf(buf, sizeof(buf), "%s to %s", from, to); 616 errno = sverrno; 617 error(buf); 618 } 619 } 620 621 622 void 623 mv(char *from, char *to) 624 { 625 char buf[MAXPATHLEN]; 626 char *to_dir; 627 int to_dir_fd = -1; 628 629 /* 630 * Make sure file is safe on disk. To improve performance we will call 631 * fsync() to the directory where file lies 632 */ 633 if (rename(from, to) != 0 || 634 (to_dir = dirname(to)) == NULL || 635 (to_dir_fd = open(to_dir, O_RDONLY|O_DIRECTORY)) == -1 || 636 fsync(to_dir_fd) != 0) { 637 int sverrno = errno; 638 (void)snprintf(buf, sizeof(buf), "%s to %s", from, to); 639 errno = sverrno; 640 if (to_dir_fd != -1) 641 close(to_dir_fd); 642 error(buf); 643 } 644 645 if (to_dir_fd != -1) 646 close(to_dir_fd); 647 } 648 649 void 650 error(const char *name) 651 { 652 653 warn("%s", name); 654 cleanup(); 655 exit(1); 656 } 657 658 void 659 cleanup(void) 660 { 661 char buf[MAXPATHLEN]; 662 663 switch(clean) { 664 case FILE_ORIG: 665 (void)snprintf(buf, sizeof(buf), "%s.orig", pname); 666 (void)unlink(buf); 667 /* FALLTHROUGH */ 668 case FILE_SECURE: 669 (void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _SMP_DB); 670 (void)unlink(buf); 671 /* FALLTHROUGH */ 672 case FILE_INSECURE: 673 (void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _MP_DB); 674 (void)unlink(buf); 675 } 676 } 677 678 static void 679 usage(void) 680 { 681 682 (void)fprintf(stderr, 683 "usage: pwd_mkdb [-BCiLNp] [-d directory] [-s cachesize] [-u username] file\n"); 684 exit(1); 685 } 686