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