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