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