1 /* $OpenBSD: scp.c,v 1.152 2006/07/26 02:35:17 stevesk Exp $ */
3 * scp - secure remote copy. This is basically patched BSD rcp which
4 * uses ssh to do the data transfer (instead of using rcmd).
6 * NOTE: This version should NOT be suid root. (This uses ssh to
7 * do the transfer and ssh has the necessary privileges.)
9 * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
11 * As far as I am concerned, the code I have written for this software
12 * can be used freely for any purpose. Any derived versions of this
13 * software must be clearly marked as such, and if the derived work is
14 * incompatible with the protocol description in the RFC file, it must be
15 * called by a name other than "ssh" or "Secure Shell".
18 * Copyright (c) 1999 Theo de Raadt. All rights reserved.
19 * Copyright (c) 1999 Aaron Campbell. All rights reserved.
21 * Redistribution and use in source and binary forms, with or without
22 * modification, are permitted provided that the following conditions
24 * 1. Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * 2. Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in the
28 * documentation and/or other materials provided with the distribution.
30 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
31 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
33 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
35 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
39 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45 * Copyright (c) 1983, 1990, 1992, 1993, 1995
46 * The Regents of the University of California. All rights reserved.
48 * Redistribution and use in source and binary forms, with or without
49 * modification, are permitted provided that the following conditions
51 * 1. Redistributions of source code must retain the above copyright
52 * notice, this list of conditions and the following disclaimer.
53 * 2. Redistributions in binary form must reproduce the above copyright
54 * notice, this list of conditions and the following disclaimer in the
55 * documentation and/or other materials provided with the distribution.
56 * 3. Neither the name of the University nor the names of its contributors
57 * may be used to endorse or promote products derived from this software
58 * without specific prior written permission.
60 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
76 #include <sys/types.h>
77 #include <sys/param.h>
78 #ifdef HAVE_SYS_STAT_H
79 # include <sys/stat.h>
81 #ifdef HAVE_SYS_TIME_H
82 # include <sys/time.h>
99 #include "pathnames.h"
102 #include "progressmeter.h"
104 extern char *__progname;
106 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
110 /* Struct for addargs */
113 /* Bandwidth limit */
114 off_t limit_rate = 0;
116 /* Name of current file being transferred. */
119 /* This is set to non-zero to enable verbose mode. */
120 int verbose_mode = 0;
122 /* This is set to zero if the progressmeter is not desired. */
123 int showprogress = 1;
125 /* This is the program to execute for the secured connection. ("ssh" or -S) */
126 char *ssh_program = _PATH_SSH_PROGRAM;
128 /* This is used to store the pid of ssh_program */
129 pid_t do_cmd_pid = -1;
134 if (do_cmd_pid > 1) {
135 kill(do_cmd_pid, signo ? signo : SIGTERM);
136 waitpid(do_cmd_pid, NULL, 0);
145 do_local_cmd(arglist *a)
152 fatal("do_local_cmd: no arguments");
155 fprintf(stderr, "Executing:");
156 for (i = 0; i < a->num; i++)
157 fprintf(stderr, " %s", a->list[i]);
158 fprintf(stderr, "\n");
160 if ((pid = fork()) == -1)
161 fatal("do_local_cmd: fork: %s", strerror(errno));
164 execvp(a->list[0], a->list);
170 signal(SIGTERM, killchild);
171 signal(SIGINT, killchild);
172 signal(SIGHUP, killchild);
174 while (waitpid(pid, &status, 0) == -1)
176 fatal("do_local_cmd: waitpid: %s", strerror(errno));
180 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
187 * This function executes the given command as the specified user on the
188 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
189 * assigns the input and output file descriptors on success.
193 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
195 int pin[2], pout[2], reserved[2];
199 "Executing: program %s host %s, user %s, command %s\n",
201 remuser ? remuser : "(unspecified)", cmd);
204 * Reserve two descriptors so that the real pipes won't get
205 * descriptors 0 and 1 because that will screw up dup2 below.
207 if (pipe(reserved) < 0)
208 fatal("pipe: %s", strerror(errno));
210 /* Create a socket pair for communicating with ssh. */
212 fatal("pipe: %s", strerror(errno));
214 fatal("pipe: %s", strerror(errno));
216 /* Free the reserved descriptors. */
220 /* Fork a child to execute the command on the remote host using ssh. */
222 if (do_cmd_pid == 0) {
231 replacearg(&args, 0, "%s", ssh_program);
233 addargs(&args, "-l%s", remuser);
234 addargs(&args, "%s", host);
235 addargs(&args, "%s", cmd);
237 execvp(ssh_program, args.list);
240 } else if (do_cmd_pid == -1) {
241 fatal("fork: %s", strerror(errno));
243 /* Parent. Close the other side, and return the local side. */
248 signal(SIGTERM, killchild);
249 signal(SIGINT, killchild);
250 signal(SIGHUP, killchild);
259 BUF *allocbuf(BUF *, int, int);
262 void run_err(const char *,...);
263 void verifydir(char *);
267 int errs, remin, remout;
268 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
271 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
274 void rsource(char *, struct stat *);
275 void sink(int, char *[]);
276 void source(int, char *[]);
277 void tolocal(int, char *[]);
278 void toremote(char *, int, char *[]);
282 main(int argc, char **argv)
284 int ch, fflag, tflag, status, n;
286 char *targ, *endp, **newargv;
290 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
293 /* Copy argv, because we modify it */
294 newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv));
295 for (n = 0; n < argc; n++)
296 newargv[n] = xstrdup(argv[n]);
299 __progname = ssh_get_progname(argv[0]);
301 memset(&args, '\0', sizeof(args));
303 addargs(&args, "%s", ssh_program);
304 addargs(&args, "-x");
305 addargs(&args, "-oForwardAgent no");
306 addargs(&args, "-oPermitLocalCommand no");
307 addargs(&args, "-oClearAllForwardings yes");
310 while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1)
312 /* User-visible flags. */
318 addargs(&args, "-%c", ch);
324 addargs(&args, "-%c%s", ch, optarg);
327 addargs(&args, "-p%s", optarg);
330 addargs(&args, "-oBatchmode yes");
333 speed = strtod(optarg, &endp);
334 if (speed <= 0 || *endp != '\0')
336 limit_rate = speed * 1024;
345 ssh_program = xstrdup(optarg);
348 addargs(&args, "-v");
352 addargs(&args, "-q");
356 /* Server options. */
358 targetshouldbedirectory = 1;
360 case 'f': /* "from" */
368 setmode(0, O_BINARY);
377 if ((pwd = getpwuid(userid = getuid())) == NULL)
378 fatal("unknown user %u", (u_int) userid);
380 if (!isatty(STDERR_FILENO))
383 remin = STDIN_FILENO;
384 remout = STDOUT_FILENO;
387 /* Follow "protocol", send data. */
400 targetshouldbedirectory = 1;
404 /* Command to be executed on remote system using "ssh". */
405 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
406 verbose_mode ? " -v" : "",
407 iamrecursive ? " -r" : "", pflag ? " -p" : "",
408 targetshouldbedirectory ? " -d" : "");
410 (void) signal(SIGPIPE, lostconn);
412 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
413 toremote(targ, argc, argv);
415 if (targetshouldbedirectory)
416 verifydir(argv[argc - 1]);
417 tolocal(argc, argv); /* Dest is local host. */
420 * Finally check the exit status of the ssh process, if one was forked
421 * and no error has occured yet
423 if (do_cmd_pid != -1 && errs == 0) {
427 (void) close(remout);
428 if (waitpid(do_cmd_pid, &status, 0) == -1)
431 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
439 toremote(char *targ, int argc, char **argv)
441 char *bp, *host, *src, *suser, *thost, *tuser, *arg;
445 memset(&alist, '\0', sizeof(alist));
452 arg = xstrdup(argv[argc - 1]);
453 if ((thost = strrchr(arg, '@'))) {
464 if (tuser != NULL && !okname(tuser)) {
469 for (i = 0; i < argc - 1; i++) {
470 src = colon(argv[i]);
471 if (src) { /* remote to remote */
473 addargs(&alist, "%s", ssh_program);
475 addargs(&alist, "-v");
476 addargs(&alist, "-x");
477 addargs(&alist, "-oClearAllForwardings yes");
478 addargs(&alist, "-n");
483 host = strrchr(argv[i], '@');
487 host = cleanhostname(host);
490 suser = pwd->pw_name;
491 else if (!okname(suser))
493 addargs(&alist, "-l");
494 addargs(&alist, "%s", suser);
496 host = cleanhostname(argv[i]);
498 addargs(&alist, "%s", host);
499 addargs(&alist, "%s", cmd);
500 addargs(&alist, "%s", src);
501 addargs(&alist, "%s%s%s:%s",
502 tuser ? tuser : "", tuser ? "@" : "",
504 if (do_local_cmd(&alist) != 0)
506 } else { /* local to remote */
508 xasprintf(&bp, "%s -t %s", cmd, targ);
509 host = cleanhostname(thost);
510 if (do_cmd(host, tuser, bp, &remin,
524 tolocal(int argc, char **argv)
526 char *bp, *host, *src, *suser;
530 memset(&alist, '\0', sizeof(alist));
533 for (i = 0; i < argc - 1; i++) {
534 if (!(src = colon(argv[i]))) { /* Local to local. */
536 addargs(&alist, "%s", _PATH_CP);
538 addargs(&alist, "-r");
540 addargs(&alist, "-p");
541 addargs(&alist, "%s", argv[i]);
542 addargs(&alist, "%s", argv[argc-1]);
543 if (do_local_cmd(&alist))
550 if ((host = strrchr(argv[i], '@')) == NULL) {
557 suser = pwd->pw_name;
559 host = cleanhostname(host);
560 xasprintf(&bp, "%s -f %s", cmd, src);
561 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
567 sink(1, argv + argc - 1);
574 source(int argc, char **argv)
579 off_t i, amt, statbytes;
581 int fd = -1, haderr, indx;
582 char *last, *name, buf[2048];
585 for (indx = 0; indx < argc; ++indx) {
589 while (len > 1 && name[len-1] == '/')
591 if (strchr(name, '\n') != NULL) {
592 run_err("%s: skipping, filename contains a newline",
596 if ((fd = open(name, O_RDONLY, 0)) < 0)
598 if (fstat(fd, &stb) < 0) {
599 syserr: run_err("%s: %s", name, strerror(errno));
602 switch (stb.st_mode & S_IFMT) {
612 run_err("%s: not a regular file", name);
615 if ((last = strrchr(name, '/')) == NULL)
622 * Make it compatible with possible future
623 * versions expecting microseconds.
625 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
626 (u_long) stb.st_mtime,
627 (u_long) stb.st_atime);
628 (void) atomicio(vwrite, remout, buf, strlen(buf));
632 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
633 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
634 (u_int) (stb.st_mode & FILEMODEMASK),
635 (long long)stb.st_size, last);
637 fprintf(stderr, "Sending file modes: %s", buf);
639 (void) atomicio(vwrite, remout, buf, strlen(buf));
642 if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
643 next: if (fd != -1) {
650 start_progress_meter(curfile, stb.st_size, &statbytes);
651 /* Keep writing after an error so that we stay sync'd up. */
652 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
654 if (i + amt > stb.st_size)
655 amt = stb.st_size - i;
657 result = atomicio(read, fd, bp->buf, amt);
662 (void) atomicio(vwrite, remout, bp->buf, amt);
664 result = atomicio(vwrite, remout, bp->buf, amt);
673 stop_progress_meter();
676 if (close(fd) < 0 && !haderr)
681 (void) atomicio(vwrite, remout, "", 1);
683 run_err("%s: %s", name, strerror(haderr));
689 rsource(char *name, struct stat *statp)
693 char *last, *vect[1], path[1100];
695 if (!(dirp = opendir(name))) {
696 run_err("%s: %s", name, strerror(errno));
699 last = strrchr(name, '/');
705 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
706 (u_long) statp->st_mtime,
707 (u_long) statp->st_atime);
708 (void) atomicio(vwrite, remout, path, strlen(path));
709 if (response() < 0) {
714 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
715 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
717 fprintf(stderr, "Entering directory: %s", path);
718 (void) atomicio(vwrite, remout, path, strlen(path));
719 if (response() < 0) {
723 while ((dp = readdir(dirp)) != NULL) {
726 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
728 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
729 run_err("%s/%s: name too long", name, dp->d_name);
732 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
736 (void) closedir(dirp);
737 (void) atomicio(vwrite, remout, "E\n", 2);
744 static struct timeval bwstart, bwend;
745 static int lamt, thresh = 16384;
747 struct timespec ts, rm;
749 if (!timerisset(&bwstart)) {
750 gettimeofday(&bwstart, NULL);
758 gettimeofday(&bwend, NULL);
759 timersub(&bwend, &bwstart, &bwend);
760 if (!timerisset(&bwend))
764 waitlen = (double)1000000L * lamt / limit_rate;
766 bwstart.tv_sec = waitlen / 1000000L;
767 bwstart.tv_usec = waitlen % 1000000L;
769 if (timercmp(&bwstart, &bwend, >)) {
770 timersub(&bwstart, &bwend, &bwend);
772 /* Adjust the wait time */
777 } else if (bwend.tv_usec < 100) {
783 TIMEVAL_TO_TIMESPEC(&bwend, &ts);
784 while (nanosleep(&ts, &rm) == -1) {
792 gettimeofday(&bwstart, NULL);
796 sink(int argc, char **argv)
806 int amt, exists, first, ofd;
807 mode_t mode, omode, mask;
808 off_t size, statbytes;
809 int setimes, targisdir, wrerrno = 0;
810 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
811 struct timeval tv[2];
815 #define SCREWUP(str) { why = str; goto screwup; }
817 setimes = targisdir = 0;
822 run_err("ambiguous target");
826 if (targetshouldbedirectory)
829 (void) atomicio(vwrite, remout, "", 1);
830 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
832 for (first = 1;; first = 0) {
834 if (atomicio(read, remin, cp, 1) != 1)
837 SCREWUP("unexpected <newline>");
839 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
840 SCREWUP("lost connection");
842 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
845 fprintf(stderr, "Sink: %s", buf);
847 if (buf[0] == '\01' || buf[0] == '\02') {
849 (void) atomicio(vwrite, STDERR_FILENO,
850 buf + 1, strlen(buf + 1));
857 (void) atomicio(vwrite, remout, "", 1);
867 mtime.tv_sec = strtol(cp, &cp, 10);
868 if (!cp || *cp++ != ' ')
869 SCREWUP("mtime.sec not delimited");
870 mtime.tv_usec = strtol(cp, &cp, 10);
871 if (!cp || *cp++ != ' ')
872 SCREWUP("mtime.usec not delimited");
873 atime.tv_sec = strtol(cp, &cp, 10);
874 if (!cp || *cp++ != ' ')
875 SCREWUP("atime.sec not delimited");
876 atime.tv_usec = strtol(cp, &cp, 10);
877 if (!cp || *cp++ != '\0')
878 SCREWUP("atime.usec not delimited");
879 (void) atomicio(vwrite, remout, "", 1);
882 if (*cp != 'C' && *cp != 'D') {
884 * Check for the case "rcp remote:foo\* local:bar".
885 * In this case, the line "No match." can be returned
886 * by the shell before the rcp command on the remote is
887 * executed so the ^Aerror_message convention isn't
894 SCREWUP("expected control record");
897 for (++cp; cp < buf + 5; cp++) {
898 if (*cp < '0' || *cp > '7')
900 mode = (mode << 3) | (*cp - '0');
903 SCREWUP("mode not delimited");
905 for (size = 0; isdigit(*cp);)
906 size = size * 10 + (*cp++ - '0');
908 SCREWUP("size not delimited");
909 if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
910 run_err("error: unexpected filename: %s", cp);
914 static char *namebuf;
915 static size_t cursize;
918 need = strlen(targ) + strlen(cp) + 250;
919 if (need > cursize) {
922 namebuf = xmalloc(need);
925 (void) snprintf(namebuf, need, "%s%s%s", targ,
926 strcmp(targ, "/") ? "/" : "", cp);
931 exists = stat(np, &stb) == 0;
933 int mod_flag = pflag;
935 SCREWUP("received directory without -r");
937 if (!S_ISDIR(stb.st_mode)) {
942 (void) chmod(np, mode);
944 /* Handle copying from a read-only
947 if (mkdir(np, mode | S_IRWXU) < 0)
950 vect[0] = xstrdup(np);
954 if (utimes(vect[0], tv) < 0)
955 run_err("%s: set times: %s",
956 vect[0], strerror(errno));
959 (void) chmod(vect[0], mode);
966 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
967 bad: run_err("%s: %s", np, strerror(errno));
970 (void) atomicio(vwrite, remout, "", 1);
971 if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
980 start_progress_meter(curfile, size, &statbytes);
981 for (count = i = 0; i < size; i += 4096) {
987 j = atomicio(read, remin, cp, amt);
989 run_err("%s", j ? strerror(errno) :
990 "dropped connection");
1001 if (count == bp->cnt) {
1002 /* Keep reading so we stay sync'd up. */
1004 if (atomicio(vwrite, ofd, bp->buf,
1015 stop_progress_meter();
1016 if (count != 0 && wrerr == NO &&
1017 atomicio(vwrite, ofd, bp->buf, count) != count) {
1021 if (wrerr == NO && ftruncate(ofd, size) != 0) {
1022 run_err("%s: truncate: %s", np, strerror(errno));
1026 if (exists || omode != mode)
1028 if (fchmod(ofd, omode)) {
1029 #else /* HAVE_FCHMOD */
1030 if (chmod(np, omode)) {
1031 #endif /* HAVE_FCHMOD */
1032 run_err("%s: set mode: %s",
1033 np, strerror(errno));
1037 if (!exists && omode != mode)
1039 if (fchmod(ofd, omode & ~mask)) {
1040 #else /* HAVE_FCHMOD */
1041 if (chmod(np, omode & ~mask)) {
1042 #endif /* HAVE_FCHMOD */
1043 run_err("%s: set mode: %s",
1044 np, strerror(errno));
1048 if (close(ofd) == -1) {
1053 if (setimes && wrerr == NO) {
1055 if (utimes(np, tv) < 0) {
1056 run_err("%s: set times: %s",
1057 np, strerror(errno));
1063 run_err("%s: %s", np, strerror(wrerrno));
1066 (void) atomicio(vwrite, remout, "", 1);
1073 run_err("protocol error: %s", why);
1080 char ch, *cp, resp, rbuf[2048];
1082 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1092 case 1: /* error, followed by error msg */
1093 case 2: /* fatal error, "" */
1095 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1098 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1101 (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf);
1113 (void) fprintf(stderr,
1114 "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1115 " [-l limit] [-o ssh_option] [-P port] [-S program]\n"
1116 " [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
1121 run_err(const char *fmt,...)
1127 if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1128 (void) fprintf(fp, "%c", 0x01);
1129 (void) fprintf(fp, "scp: ");
1131 (void) vfprintf(fp, fmt, ap);
1133 (void) fprintf(fp, "\n");
1139 vfprintf(stderr, fmt, ap);
1141 fprintf(stderr, "\n");
1150 if (!stat(cp, &stb)) {
1151 if (S_ISDIR(stb.st_mode))
1155 run_err("%s: %s", cp, strerror(errno));
1170 if (!isalpha(c) && !isdigit(c)) {
1185 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1190 allocbuf(BUF *bp, int fd, int blksize)
1193 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1196 if (fstat(fd, &stb) < 0) {
1197 run_err("fstat: %s", strerror(errno));
1200 size = roundup(stb.st_blksize, blksize);
1203 #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1205 #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1206 if (bp->cnt >= size)
1208 if (bp->buf == NULL)
1209 bp->buf = xmalloc(size);
1211 bp->buf = xrealloc(bp->buf, 1, size);
1212 memset(bp->buf, 0, size);
1221 write(STDERR_FILENO, "lost connection\n", 16);