rcp.c revision 1.43
1 /* $NetBSD: rcp.c,v 1.43 2006/12/15 20:22:06 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1990, 1992, 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. 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/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1983, 1990, 1992, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)rcp.c 8.2 (Berkeley) 4/2/94"; 41 #else 42 __RCSID("$NetBSD: rcp.c,v 1.43 2006/12/15 20:22:06 christos Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/stat.h> 48 #include <sys/time.h> 49 #include <sys/socket.h> 50 #include <netinet/in.h> 51 #include <netinet/in_systm.h> 52 #include <netinet/ip.h> 53 54 #include <ctype.h> 55 #include <dirent.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <fcntl.h> 59 #include <netdb.h> 60 #include <pwd.h> 61 #include <signal.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 67 #include "pathnames.h" 68 #include "extern.h" 69 70 #define OPTIONS "46dfprt" 71 72 struct passwd *pwd; 73 char *pwname; 74 u_short port; 75 uid_t userid; 76 int errs, rem; 77 int pflag, iamremote, iamrecursive, targetshouldbedirectory; 78 int family = AF_UNSPEC; 79 static char dot[] = "."; 80 81 #define CMDNEEDS 64 82 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ 83 84 int response(void); 85 void rsource(char *, struct stat *); 86 void sink(int, char *[]); 87 void source(int, char *[]); 88 void tolocal(int, char *[]); 89 void toremote(char *, int, char *[]); 90 void usage(void); 91 92 int 93 main(int argc, char *argv[]) 94 { 95 struct servent *sp; 96 int ch, fflag, tflag; 97 char *targ; 98 const char *shell; 99 100 fflag = tflag = 0; 101 while ((ch = getopt(argc, argv, OPTIONS)) != -1) 102 switch(ch) { /* User-visible flags. */ 103 case '4': 104 family = AF_INET; 105 break; 106 case '6': 107 family = AF_INET6; 108 break; 109 case 'K': 110 break; 111 case 'p': 112 pflag = 1; 113 break; 114 case 'r': 115 iamrecursive = 1; 116 break; 117 /* Server options. */ 118 case 'd': 119 targetshouldbedirectory = 1; 120 break; 121 case 'f': /* "from" */ 122 iamremote = 1; 123 fflag = 1; 124 break; 125 case 't': /* "to" */ 126 iamremote = 1; 127 tflag = 1; 128 break; 129 case '?': 130 default: 131 usage(); 132 } 133 argc -= optind; 134 argv += optind; 135 136 sp = getservbyname(shell = "shell", "tcp"); 137 if (sp == NULL) 138 errx(1, "%s/tcp: unknown service", shell); 139 port = sp->s_port; 140 141 if ((pwd = getpwuid(userid = getuid())) == NULL) 142 errx(1, "unknown user %d", (int)userid); 143 144 if ((pwname = strdup(pwd->pw_name)) == NULL) 145 err(1, NULL); 146 147 rem = STDIN_FILENO; /* XXX */ 148 149 if (fflag) { /* Follow "protocol", send data. */ 150 (void)response(); 151 source(argc, argv); 152 exit(errs); 153 } 154 155 if (tflag) { /* Receive data. */ 156 sink(argc, argv); 157 exit(errs); 158 } 159 160 if (argc < 2) 161 usage(); 162 if (argc > 2) 163 targetshouldbedirectory = 1; 164 165 rem = -1; 166 /* Command to be executed on remote system using "rsh". */ 167 (void)snprintf(cmd, sizeof(cmd), "rcp%s%s%s", 168 iamrecursive ? " -r" : "", pflag ? " -p" : "", 169 targetshouldbedirectory ? " -d" : ""); 170 171 (void)signal(SIGPIPE, lostconn); 172 173 if ((targ = colon(argv[argc - 1])) != NULL)/* Dest is remote host. */ 174 toremote(targ, argc, argv); 175 else { 176 tolocal(argc, argv); /* Dest is local host. */ 177 if (targetshouldbedirectory) 178 verifydir(argv[argc - 1]); 179 } 180 exit(errs); 181 /* NOTREACHED */ 182 } 183 184 void 185 toremote(char *targ, int argc, char *argv[]) 186 { 187 int i, len; 188 char *bp, *host, *src, *suser, *thost, *tuser; 189 190 *targ++ = 0; 191 if (*targ == 0) 192 targ = dot; 193 194 if ((thost = strchr(argv[argc - 1], '@')) != NULL) { 195 /* user@host */ 196 *thost++ = 0; 197 tuser = argv[argc - 1]; 198 if (*tuser == '\0') 199 tuser = NULL; 200 else if (!okname(tuser)) 201 exit(1); 202 } else { 203 thost = argv[argc - 1]; 204 tuser = NULL; 205 } 206 thost = unbracket(thost); 207 208 for (i = 0; i < argc - 1; i++) { 209 src = colon(argv[i]); 210 if (src) { /* remote to remote */ 211 *src++ = 0; 212 if (*src == 0) 213 src = dot; 214 host = strchr(argv[i], '@'); 215 len = strlen(_PATH_RSH) + strlen(argv[i]) + 216 strlen(src) + (tuser ? strlen(tuser) : 0) + 217 strlen(thost) + strlen(targ) + CMDNEEDS + 20; 218 if (!(bp = malloc(len))) 219 err(1, NULL); 220 if (host) { 221 *host++ = 0; 222 host = unbracket(host); 223 suser = argv[i]; 224 if (*suser == '\0') 225 suser = pwname; 226 else if (!okname(suser)) { 227 (void)free(bp); 228 continue; 229 } 230 (void)snprintf(bp, len, 231 "%s %s -l %s -n %s %s '%s%s%s:%s'", 232 _PATH_RSH, host, suser, cmd, src, 233 tuser ? tuser : "", tuser ? "@" : "", 234 thost, targ); 235 } else { 236 host = unbracket(argv[i]); 237 (void)snprintf(bp, len, 238 "exec %s %s -n %s %s '%s%s%s:%s'", 239 _PATH_RSH, argv[i], cmd, src, 240 tuser ? tuser : "", tuser ? "@" : "", 241 thost, targ); 242 } 243 (void)susystem(bp); 244 (void)free(bp); 245 } else { /* local to remote */ 246 if (rem == -1) { 247 len = strlen(targ) + CMDNEEDS + 20; 248 if (!(bp = malloc(len))) 249 err(1, NULL); 250 (void)snprintf(bp, len, "%s -t %s", cmd, targ); 251 host = thost; 252 rem = rcmd_af(&host, port, pwname, 253 tuser ? tuser : pwname, 254 bp, NULL, family); 255 if (rem < 0) 256 exit(1); 257 if (response() < 0) 258 exit(1); 259 (void)free(bp); 260 } 261 source(1, argv+i); 262 } 263 } 264 } 265 266 void 267 tolocal(int argc, char *argv[]) 268 { 269 int i, len; 270 char *bp, *host, *src, *suser; 271 272 for (i = 0; i < argc - 1; i++) { 273 if (!(src = colon(argv[i]))) { /* Local to local. */ 274 len = strlen(_PATH_CP) + strlen(argv[i]) + 275 strlen(argv[argc - 1]) + 20; 276 if (!(bp = malloc(len))) 277 err(1, NULL); 278 (void)snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP, 279 iamrecursive ? " -r" : "", pflag ? " -p" : "", 280 argv[i], argv[argc - 1]); 281 if (susystem(bp)) 282 ++errs; 283 (void)free(bp); 284 continue; 285 } 286 *src++ = 0; 287 if (*src == 0) 288 src = dot; 289 if ((host = strchr(argv[i], '@')) == NULL) { 290 host = argv[i]; 291 suser = pwname; 292 } else { 293 *host++ = 0; 294 suser = argv[i]; 295 if (*suser == '\0') 296 suser = pwname; 297 else if (!okname(suser)) 298 continue; 299 } 300 host = unbracket(host); 301 len = strlen(src) + CMDNEEDS + 20; 302 if ((bp = malloc(len)) == NULL) 303 err(1, NULL); 304 (void)snprintf(bp, len, "%s -f %s", cmd, src); 305 rem = 306 rcmd_af(&host, port, pwname, suser, bp, NULL, family); 307 (void)free(bp); 308 if (rem < 0) { 309 ++errs; 310 continue; 311 } 312 sink(1, argv + argc - 1); 313 (void)close(rem); 314 rem = -1; 315 } 316 } 317 318 void 319 source(int argc, char *argv[]) 320 { 321 struct stat stb; 322 static BUF buffer; 323 BUF *bp; 324 off_t i; 325 int amt, fd, haderr, indx, result; 326 char *last, *name, buf[BUFSIZ]; 327 328 for (indx = 0; indx < argc; ++indx) { 329 name = argv[indx]; 330 if ((fd = open(name, O_RDONLY, 0)) < 0) 331 goto syserr; 332 if (fstat(fd, &stb)) { 333 syserr: run_err("%s: %s", name, strerror(errno)); 334 goto next; 335 } 336 switch (stb.st_mode & S_IFMT) { 337 case S_IFREG: 338 break; 339 case S_IFDIR: 340 if (iamrecursive) { 341 rsource(name, &stb); 342 goto next; 343 } 344 /* FALLTHROUGH */ 345 default: 346 run_err("%s: not a regular file", name); 347 goto next; 348 } 349 if ((last = strrchr(name, '/')) == NULL) 350 last = name; 351 else 352 ++last; 353 if (pflag) { 354 /* 355 * Make it compatible with possible future 356 * versions expecting microseconds. 357 */ 358 (void)snprintf(buf, sizeof(buf), "T%ld %ld %ld %ld\n", 359 (long)stb.st_mtimespec.tv_sec, 360 (long)stb.st_mtimespec.tv_nsec / 1000, 361 (long)stb.st_atimespec.tv_sec, 362 (long)stb.st_atimespec.tv_nsec / 1000); 363 (void)write(rem, buf, strlen(buf)); 364 if (response() < 0) 365 goto next; 366 } 367 #define RCPMODEMASK (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO) 368 (void)snprintf(buf, sizeof(buf), "C%04o %lld %s\n", 369 stb.st_mode & RCPMODEMASK, (long long)stb.st_size, last); 370 (void)write(rem, buf, strlen(buf)); 371 if (response() < 0) 372 goto next; 373 if ((bp = allocbuf(&buffer, fd, BUFSIZ)) == NULL) { 374 next: (void)close(fd); 375 continue; 376 } 377 378 /* Keep writing after an error so that we stay sync'd up. */ 379 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { 380 amt = bp->cnt; 381 if (i + amt > stb.st_size) 382 amt = stb.st_size - i; 383 if (!haderr) { 384 result = read(fd, bp->buf, amt); 385 if (result != amt) 386 haderr = result >= 0 ? EIO : errno; 387 } 388 if (haderr) 389 (void)write(rem, bp->buf, amt); 390 else { 391 result = write(rem, bp->buf, amt); 392 if (result != amt) 393 haderr = result >= 0 ? EIO : errno; 394 } 395 } 396 if (close(fd) && !haderr) 397 haderr = errno; 398 if (!haderr) 399 (void)write(rem, "", 1); 400 else 401 run_err("%s: %s", name, strerror(haderr)); 402 (void)response(); 403 } 404 } 405 406 void 407 rsource(char *name, struct stat *statp) 408 { 409 DIR *dirp; 410 struct dirent *dp; 411 char *last, *vect[1], path[MAXPATHLEN]; 412 413 if (!(dirp = opendir(name))) { 414 run_err("%s: %s", name, strerror(errno)); 415 return; 416 } 417 last = strrchr(name, '/'); 418 if (last == 0) 419 last = name; 420 else 421 last++; 422 if (pflag) { 423 (void)snprintf(path, sizeof(path), "T%ld %ld %ld %ld\n", 424 (long)statp->st_mtimespec.tv_sec, 425 (long)statp->st_mtimespec.tv_nsec / 1000, 426 (long)statp->st_atimespec.tv_sec, 427 (long)statp->st_atimespec.tv_nsec / 1000); 428 (void)write(rem, path, strlen(path)); 429 if (response() < 0) { 430 closedir(dirp); 431 return; 432 } 433 } 434 (void)snprintf(path, sizeof(path), 435 "D%04o %d %s\n", statp->st_mode & RCPMODEMASK, 0, last); 436 (void)write(rem, path, strlen(path)); 437 if (response() < 0) { 438 closedir(dirp); 439 return; 440 } 441 while ((dp = readdir(dirp)) != NULL) { 442 if (dp->d_ino == 0) 443 continue; 444 if (!strcmp(dp->d_name, dot) || !strcmp(dp->d_name, "..")) 445 continue; 446 if (strlen(name) + 1 + strlen(dp->d_name) >= MAXPATHLEN - 1) { 447 run_err("%s/%s: name too long", name, dp->d_name); 448 continue; 449 } 450 (void)snprintf(path, sizeof(path), "%s/%s", name, dp->d_name); 451 vect[0] = path; 452 source(1, vect); 453 } 454 (void)closedir(dirp); 455 (void)write(rem, "E\n", 2); 456 (void)response(); 457 } 458 459 void 460 sink(int argc, char *argv[]) 461 { 462 static BUF buffer; 463 struct stat stb; 464 struct timeval tv[2]; 465 enum { YES, NO, DISPLAYED } wrerr; 466 BUF *bp; 467 off_t i, j; 468 int amt, count, exists, first, mask, mode, ofd, omode; 469 int setimes, targisdir; 470 int wrerrno = 0; /* pacify gcc */ 471 char ch, *cp, *np, *targ, *vect[1], buf[BUFSIZ]; 472 const char *why; 473 off_t size; 474 475 #define atime tv[0] 476 #define mtime tv[1] 477 #define SCREWUP(str) { why = str; goto screwup; } 478 479 setimes = targisdir = 0; 480 mask = umask(0); 481 if (!pflag) 482 (void)umask(mask); 483 if (argc != 1) { 484 run_err("ambiguous target"); 485 exit(1); 486 } 487 targ = *argv; 488 if (targetshouldbedirectory) 489 verifydir(targ); 490 (void)write(rem, "", 1); 491 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) 492 targisdir = 1; 493 for (first = 1;; first = 0) { 494 cp = buf; 495 if (read(rem, cp, 1) <= 0) 496 return; 497 if (*cp++ == '\n') 498 SCREWUP("unexpected <newline>"); 499 do { 500 if (read(rem, &ch, sizeof(ch)) != sizeof(ch)) 501 SCREWUP("lost connection"); 502 *cp++ = ch; 503 } while (cp < &buf[BUFSIZ - 1] && ch != '\n'); 504 *cp = 0; 505 506 if (buf[0] == '\01' || buf[0] == '\02') { 507 if (iamremote == 0) 508 (void)write(STDERR_FILENO, 509 buf + 1, strlen(buf + 1)); 510 if (buf[0] == '\02') 511 exit(1); 512 ++errs; 513 continue; 514 } 515 if (buf[0] == 'E') { 516 (void)write(rem, "", 1); 517 return; 518 } 519 520 if (ch == '\n') 521 *--cp = 0; 522 523 #define getnum(t) (t) = 0; while (isdigit((unsigned char)*cp)) (t) = (t) * 10 + (*cp++ - '0'); 524 cp = buf; 525 if (*cp == 'T') { 526 setimes++; 527 cp++; 528 getnum(mtime.tv_sec); 529 if (*cp++ != ' ') 530 SCREWUP("mtime.sec not delimited"); 531 getnum(mtime.tv_usec); 532 if (*cp++ != ' ') 533 SCREWUP("mtime.usec not delimited"); 534 getnum(atime.tv_sec); 535 if (*cp++ != ' ') 536 SCREWUP("atime.sec not delimited"); 537 getnum(atime.tv_usec); 538 if (*cp++ != '\0') 539 SCREWUP("atime.usec not delimited"); 540 (void)write(rem, "", 1); 541 continue; 542 } 543 if (*cp != 'C' && *cp != 'D') { 544 /* 545 * Check for the case "rcp remote:foo\* local:bar". 546 * In this case, the line "No match." can be returned 547 * by the shell before the rcp command on the remote is 548 * executed so the ^Aerror_message convention isn't 549 * followed. 550 */ 551 if (first) { 552 run_err("%s", cp); 553 exit(1); 554 } 555 SCREWUP("expected control record"); 556 } 557 mode = 0; 558 for (++cp; cp < buf + 5; cp++) { 559 if (*cp < '0' || *cp > '7') 560 SCREWUP("bad mode"); 561 mode = (mode << 3) | (*cp - '0'); 562 } 563 if (*cp++ != ' ') 564 SCREWUP("mode not delimited"); 565 566 for (size = 0; isdigit((unsigned char)*cp);) 567 size = size * 10 + (*cp++ - '0'); 568 if (*cp++ != ' ') 569 SCREWUP("size not delimited"); 570 if (targisdir) { 571 static char *namebuf; 572 static int cursize; 573 size_t need; 574 575 need = strlen(targ) + strlen(cp) + 250; 576 if (need > cursize) { 577 if (!(namebuf = malloc(need))) 578 run_err("%s", strerror(errno)); 579 } 580 (void)snprintf(namebuf, need, "%s%s%s", targ, 581 *targ ? "/" : "", cp); 582 np = namebuf; 583 } else 584 np = targ; 585 exists = stat(np, &stb) == 0; 586 if (buf[0] == 'D') { 587 int mod_flag = pflag; 588 if (exists) { 589 if (!S_ISDIR(stb.st_mode)) { 590 errno = ENOTDIR; 591 goto bad; 592 } 593 if (pflag) 594 (void)chmod(np, mode); 595 } else { 596 /* Handle copying from a read-only directory */ 597 mod_flag = 1; 598 if (mkdir(np, mode | S_IRWXU) < 0) 599 goto bad; 600 } 601 vect[0] = np; 602 sink(1, vect); 603 if (setimes) { 604 setimes = 0; 605 if (utimes(np, tv) < 0) 606 run_err("%s: set times: %s", 607 np, strerror(errno)); 608 } 609 if (mod_flag) 610 (void)chmod(np, mode); 611 continue; 612 } 613 omode = mode; 614 mode |= S_IWRITE; 615 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) { 616 bad: run_err("%s: %s", np, strerror(errno)); 617 continue; 618 } 619 (void)write(rem, "", 1); 620 if ((bp = allocbuf(&buffer, ofd, BUFSIZ)) == NULL) { 621 (void)close(ofd); 622 continue; 623 } 624 cp = bp->buf; 625 wrerr = NO; 626 for (count = i = 0; i < size; i += BUFSIZ) { 627 amt = BUFSIZ; 628 if (i + amt > size) 629 amt = size - i; 630 count += amt; 631 do { 632 j = read(rem, cp, amt); 633 if (j <= 0) { 634 run_err("%s", j ? strerror(errno) : 635 "dropped connection"); 636 exit(1); 637 } 638 amt -= j; 639 cp += j; 640 } while (amt > 0); 641 if (count == bp->cnt) { 642 /* Keep reading so we stay sync'd up. */ 643 if (wrerr == NO) { 644 j = write(ofd, bp->buf, count); 645 if (j != count) { 646 wrerr = YES; 647 wrerrno = j >= 0 ? EIO : errno; 648 } 649 } 650 count = 0; 651 cp = bp->buf; 652 } 653 } 654 if (count != 0 && wrerr == NO && 655 (j = write(ofd, bp->buf, count)) != count) { 656 wrerr = YES; 657 wrerrno = j >= 0 ? EIO : errno; 658 } 659 if (ftruncate(ofd, size)) { 660 run_err("%s: truncate: %s", np, strerror(errno)); 661 wrerr = DISPLAYED; 662 } 663 if (pflag) { 664 if (exists || omode != mode) 665 if (fchmod(ofd, omode)) 666 run_err("%s: set mode: %s", 667 np, strerror(errno)); 668 } else { 669 if (!exists && omode != mode) 670 if (fchmod(ofd, omode & ~mask)) 671 run_err("%s: set mode: %s", 672 np, strerror(errno)); 673 } 674 #ifndef __SVR4 675 if (setimes && wrerr == NO) { 676 setimes = 0; 677 if (futimes(ofd, tv) < 0) { 678 run_err("%s: set times: %s", 679 np, strerror(errno)); 680 wrerr = DISPLAYED; 681 } 682 } 683 #endif 684 (void)close(ofd); 685 #ifdef __SVR4 686 if (setimes && wrerr == NO) { 687 setimes = 0; 688 if (utimes(np, tv) < 0) { 689 run_err("%s: set times: %s", 690 np, strerror(errno)); 691 wrerr = DISPLAYED; 692 } 693 } 694 #endif 695 (void)response(); 696 switch(wrerr) { 697 case YES: 698 run_err("%s: write: %s", np, strerror(wrerrno)); 699 break; 700 case NO: 701 (void)write(rem, "", 1); 702 break; 703 case DISPLAYED: 704 break; 705 } 706 } 707 screwup: 708 run_err("protocol error: %s", why); 709 exit(1); 710 /* NOTREACHED */ 711 } 712 713 714 int 715 response(void) 716 { 717 char ch, *cp, resp, rbuf[BUFSIZ]; 718 719 if (read(rem, &resp, sizeof(resp)) != sizeof(resp)) 720 lostconn(0); 721 722 cp = rbuf; 723 switch(resp) { 724 case 0: /* ok */ 725 return (0); 726 default: 727 *cp++ = resp; 728 /* FALLTHROUGH */ 729 case 1: /* error, followed by error msg */ 730 case 2: /* fatal error, "" */ 731 do { 732 if (read(rem, &ch, sizeof(ch)) != sizeof(ch)) 733 lostconn(0); 734 *cp++ = ch; 735 } while (cp < &rbuf[BUFSIZ] && ch != '\n'); 736 737 if (!iamremote) 738 (void)write(STDERR_FILENO, rbuf, cp - rbuf); 739 ++errs; 740 if (resp == 1) 741 return (-1); 742 exit(1); 743 } 744 /* NOTREACHED */ 745 } 746 747 void 748 usage(void) 749 { 750 (void)fprintf(stderr, 751 "usage: rcp [-46p] f1 f2; or: rcp [-46pr] f1 ... fn directory\n"); 752 exit(1); 753 /* NOTREACHED */ 754 } 755 756 #include <stdarg.h> 757 758 759 void 760 run_err(const char *fmt, ...) 761 { 762 static FILE *fp; 763 va_list ap; 764 765 ++errs; 766 if (fp == NULL && !(fp = fdopen(rem, "w"))) 767 return; 768 769 va_start(ap, fmt); 770 771 (void)fprintf(fp, "%c", 0x01); 772 (void)fprintf(fp, "rcp: "); 773 (void)vfprintf(fp, fmt, ap); 774 (void)fprintf(fp, "\n"); 775 (void)fflush(fp); 776 va_end(ap); 777 778 if (!iamremote) { 779 va_start(ap, fmt); 780 vwarnx(fmt, ap); 781 va_end(ap); 782 } 783 } 784
Indexes created Wed Oct 01 19:09:53 GMT 2025