2 * scp - secure remote copy. This is basically patched BSD rcp which
3 * uses ssh to do the data transfer (instead of using rcmd).
5 * NOTE: This version should NOT be suid root. (This uses ssh to
6 * do the transfer and ssh has the necessary privileges.)
8 * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
10 * As far as I am concerned, the code I have written for this software
11 * can be used freely for any purpose. Any derived versions of this
12 * software must be clearly marked as such, and if the derived work is
13 * incompatible with the protocol description in the RFC file, it must be
14 * called by a name other than "ssh" or "Secure Shell".
17 * Copyright (c) 1999 Theo de Raadt. All rights reserved.
18 * Copyright (c) 1999 Aaron Campbell. All rights reserved.
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
23 * 1. Redistributions of source code must retain the above copyright
24 * notice, this list of conditions and the following disclaimer.
25 * 2. Redistributions in binary form must reproduce the above copyright
26 * notice, this list of conditions and the following disclaimer in the
27 * documentation and/or other materials provided with the distribution.
29 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
30 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
33 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
34 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
38 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
44 * Copyright (c) 1983, 1990, 1992, 1993, 1995
45 * The Regents of the University of California. All rights reserved.
47 * Redistribution and use in source and binary forms, with or without
48 * modification, are permitted provided that the following conditions
50 * 1. Redistributions of source code must retain the above copyright
51 * notice, this list of conditions and the following disclaimer.
52 * 2. Redistributions in binary form must reproduce the above copyright
53 * notice, this list of conditions and the following disclaimer in the
54 * documentation and/or other materials provided with the distribution.
55 * 3. All advertising materials mentioning features or use of this software
56 * must display the following acknowledgement:
57 * This product includes software developed by the University of
58 * California, Berkeley and its contributors.
59 * 4. Neither the name of the University nor the names of its contributors
60 * may be used to endorse or promote products derived from this software
61 * without specific prior written permission.
63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
78 RCSID("$OpenBSD: scp.c,v 1.82 2001/09/12 18:18:25 stevesk Exp $");
82 #include "pathnames.h"
86 #ifdef HAVE___PROGNAME
87 extern char *__progname;
92 /* For progressmeter() -- number of seconds before xfer considered "stalled" */
94 /* alarm() interval for updating progress meter */
95 #define PROGRESSTIME 1
97 /* Progress meter bar */
99 "************************************************************"\
100 "************************************************************"\
101 "************************************************************"\
102 "************************************************************"
103 #define MAX_BARLENGTH (sizeof(BAR) - 1)
105 /* Visual statistics about files as they are transferred. */
106 void progressmeter(int);
108 /* Returns width of the terminal (for progress meter calculations). */
109 int getttywidth(void);
110 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
112 /* Struct for addargs */
115 /* Time a transfer started. */
116 static struct timeval start;
118 /* Number of bytes of current file transferred so far. */
119 volatile off_t statbytes;
121 /* Total size of current file. */
122 off_t totalbytes = 0;
124 /* Name of current file being transferred. */
127 /* This is set to non-zero to enable verbose mode. */
128 int verbose_mode = 0;
130 /* This is set to zero if the progressmeter is not desired. */
131 int showprogress = 1;
133 /* This is the program to execute for the secured connection. ("ssh" or -S) */
134 char *ssh_program = _PATH_SSH_PROGRAM;
137 * This function executes the given command as the specified user on the
138 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
139 * assigns the input and output file descriptors on success.
143 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
145 int pin[2], pout[2], reserved[2];
149 "Executing: program %s host %s, user %s, command %s\n",
151 remuser ? remuser : "(unspecified)", cmd);
154 * Reserve two descriptors so that the real pipes won't get
155 * descriptors 0 and 1 because that will screw up dup2 below.
159 /* Create a socket pair for communicating with ssh. */
161 fatal("pipe: %s", strerror(errno));
163 fatal("pipe: %s", strerror(errno));
165 /* Free the reserved descriptors. */
169 /* For a child to execute the command on the remote host using ssh. */
179 args.list[0] = ssh_program;
181 addargs(&args, "-l%s", remuser);
182 addargs(&args, "%s", host);
183 addargs(&args, "%s", cmd);
185 execvp(ssh_program, args.list);
189 /* Parent. Close the other side, and return the local side. */
202 BUF *allocbuf(BUF *, int, int);
206 void run_err(const char *,...);
207 void verifydir(char *);
211 int errs, remin, remout;
212 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
215 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
218 void rsource(char *, struct stat *);
219 void sink(int, char *[]);
220 void source(int, char *[]);
221 void tolocal(int, char *[]);
222 void toremote(char *, int, char *[]);
230 int ch, fflag, tflag;
235 __progname = get_progname(argv[0]);
238 addargs(&args, "ssh"); /* overwritten with ssh_program */
239 addargs(&args, "-x");
240 addargs(&args, "-oForwardAgent no");
241 addargs(&args, "-oFallBackToRsh no");
244 while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
246 /* User-visible flags. */
250 addargs(&args, "-%c", ch);
255 addargs(&args, "-%c%s", ch, optarg);
258 addargs(&args, "-p%s", optarg);
261 addargs(&args, "-oBatchmode yes");
270 ssh_program = xstrdup(optarg);
273 addargs(&args, "-v");
280 /* Server options. */
282 targetshouldbedirectory = 1;
284 case 'f': /* "from" */
292 setmode(0, O_BINARY);
301 if ((pwd = getpwuid(userid = getuid())) == NULL)
302 fatal("unknown user %d", (int) userid);
304 if (!isatty(STDERR_FILENO))
307 remin = STDIN_FILENO;
308 remout = STDOUT_FILENO;
311 /* Follow "protocol", send data. */
324 targetshouldbedirectory = 1;
327 /* Command to be executed on remote system using "ssh". */
328 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
329 verbose_mode ? " -v" : "",
330 iamrecursive ? " -r" : "", pflag ? " -p" : "",
331 targetshouldbedirectory ? " -d" : "");
333 (void) signal(SIGPIPE, lostconn);
335 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
336 toremote(targ, argc, argv);
338 tolocal(argc, argv); /* Dest is local host. */
339 if (targetshouldbedirectory)
340 verifydir(argv[argc - 1]);
346 toremote(targ, argc, argv)
351 char *bp, *host, *src, *suser, *thost, *tuser;
357 if ((thost = strchr(argv[argc - 1], '@'))) {
360 tuser = argv[argc - 1];
363 else if (!okname(tuser))
366 thost = argv[argc - 1];
370 for (i = 0; i < argc - 1; i++) {
371 src = colon(argv[i]);
372 if (src) { /* remote to remote */
376 host = strchr(argv[i], '@');
377 len = strlen(ssh_program) + strlen(argv[i]) +
378 strlen(src) + (tuser ? strlen(tuser) : 0) +
379 strlen(thost) + strlen(targ) + CMDNEEDS + 32;
383 host = cleanhostname(host);
386 suser = pwd->pw_name;
387 else if (!okname(suser))
390 "%s%s -x -o'FallBackToRsh no' -n "
391 "-l %s %s %s %s '%s%s%s:%s'",
392 ssh_program, verbose_mode ? " -v" : "",
393 suser, host, cmd, src,
394 tuser ? tuser : "", tuser ? "@" : "",
397 host = cleanhostname(argv[i]);
399 "exec %s%s -x -o'FallBackToRsh no' -n %s "
401 ssh_program, verbose_mode ? " -v" : "",
403 tuser ? tuser : "", tuser ? "@" : "",
407 fprintf(stderr, "Executing: %s\n", bp);
410 } else { /* local to remote */
412 len = strlen(targ) + CMDNEEDS + 20;
414 (void) snprintf(bp, len, "%s -t %s", cmd, targ);
415 host = cleanhostname(thost);
416 if (do_cmd(host, tuser, bp, &remin,
434 char *bp, *host, *src, *suser;
436 for (i = 0; i < argc - 1; i++) {
437 if (!(src = colon(argv[i]))) { /* Local to local. */
438 len = strlen(_PATH_CP) + strlen(argv[i]) +
439 strlen(argv[argc - 1]) + 20;
441 (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
442 iamrecursive ? " -r" : "", pflag ? " -p" : "",
443 argv[i], argv[argc - 1]);
445 fprintf(stderr, "Executing: %s\n", bp);
454 if ((host = strchr(argv[i], '@')) == NULL) {
461 suser = pwd->pw_name;
462 else if (!okname(suser))
465 host = cleanhostname(host);
466 len = strlen(src) + CMDNEEDS + 20;
468 (void) snprintf(bp, len, "%s -f %s", cmd, src);
469 if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
475 sink(1, argv + argc - 1);
489 off_t i, amt, result;
490 int fd, haderr, indx;
491 char *last, *name, buf[2048];
494 for (indx = 0; indx < argc; ++indx) {
498 while (len > 1 && name[len-1] == '/')
500 if ((fd = open(name, O_RDONLY, 0)) < 0)
502 if (fstat(fd, &stb) < 0) {
503 syserr: run_err("%s: %s", name, strerror(errno));
506 switch (stb.st_mode & S_IFMT) {
516 run_err("%s: not a regular file", name);
519 if ((last = strrchr(name, '/')) == NULL)
526 * Make it compatible with possible future
527 * versions expecting microseconds.
529 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
530 (u_long) stb.st_mtime,
531 (u_long) stb.st_atime);
532 (void) atomicio(write, remout, buf, strlen(buf));
536 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
537 #ifdef HAVE_LONG_LONG_INT
538 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
539 (u_int) (stb.st_mode & FILEMODEMASK),
540 (long long) stb.st_size, last);
542 /* XXX: Handle integer overflow? */
543 snprintf(buf, sizeof buf, "C%04o %lu %s\n",
544 (u_int) (stb.st_mode & FILEMODEMASK),
545 (u_long) stb.st_size, last);
549 fprintf(stderr, "Sending file modes: %s", buf);
552 (void) atomicio(write, remout, buf, strlen(buf));
555 if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
556 next: (void) close(fd);
560 totalbytes = stb.st_size;
563 /* Keep writing after an error so that we stay sync'd up. */
564 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
566 if (i + amt > stb.st_size)
567 amt = stb.st_size - i;
569 result = atomicio(read, fd, bp->buf, amt);
571 haderr = result >= 0 ? EIO : errno;
574 (void) atomicio(write, remout, bp->buf, amt);
576 result = atomicio(write, remout, bp->buf, amt);
578 haderr = result >= 0 ? EIO : errno;
585 if (close(fd) < 0 && !haderr)
588 (void) atomicio(write, remout, "", 1);
590 run_err("%s: %s", name, strerror(haderr));
602 char *last, *vect[1], path[1100];
604 if (!(dirp = opendir(name))) {
605 run_err("%s: %s", name, strerror(errno));
608 last = strrchr(name, '/');
614 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
615 (u_long) statp->st_mtime,
616 (u_long) statp->st_atime);
617 (void) atomicio(write, remout, path, strlen(path));
618 if (response() < 0) {
623 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
624 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
626 fprintf(stderr, "Entering directory: %s", path);
627 (void) atomicio(write, remout, path, strlen(path));
628 if (response() < 0) {
632 while ((dp = readdir(dirp)) != NULL) {
635 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
637 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
638 run_err("%s/%s: name too long", name, dp->d_name);
641 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
645 (void) closedir(dirp);
646 (void) atomicio(write, remout, "E\n", 2);
662 int amt, count, exists, first, mask, mode, ofd, omode;
664 int setimes, targisdir, wrerrno = 0;
665 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
666 struct timeval tv[2];
670 #define SCREWUP(str) do { why = str; goto screwup; } while (0)
672 setimes = targisdir = 0;
677 run_err("ambiguous target");
681 if (targetshouldbedirectory)
684 (void) atomicio(write, remout, "", 1);
685 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
687 for (first = 1;; first = 0) {
689 if (atomicio(read, remin, cp, 1) <= 0)
692 SCREWUP("unexpected <newline>");
694 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
695 SCREWUP("lost connection");
697 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
700 if (buf[0] == '\01' || buf[0] == '\02') {
702 (void) atomicio(write, STDERR_FILENO,
703 buf + 1, strlen(buf + 1));
710 (void) atomicio(write, remout, "", 1);
720 mtime.tv_sec = strtol(cp, &cp, 10);
721 if (!cp || *cp++ != ' ')
722 SCREWUP("mtime.sec not delimited");
723 mtime.tv_usec = strtol(cp, &cp, 10);
724 if (!cp || *cp++ != ' ')
725 SCREWUP("mtime.usec not delimited");
726 atime.tv_sec = strtol(cp, &cp, 10);
727 if (!cp || *cp++ != ' ')
728 SCREWUP("atime.sec not delimited");
729 atime.tv_usec = strtol(cp, &cp, 10);
730 if (!cp || *cp++ != '\0')
731 SCREWUP("atime.usec not delimited");
732 (void) atomicio(write, remout, "", 1);
735 if (*cp != 'C' && *cp != 'D') {
737 * Check for the case "rcp remote:foo\* local:bar".
738 * In this case, the line "No match." can be returned
739 * by the shell before the rcp command on the remote is
740 * executed so the ^Aerror_message convention isn't
747 SCREWUP("expected control record");
750 for (++cp; cp < buf + 5; cp++) {
751 if (*cp < '0' || *cp > '7')
753 mode = (mode << 3) | (*cp - '0');
756 SCREWUP("mode not delimited");
758 for (size = 0; isdigit(*cp);)
759 size = size * 10 + (*cp++ - '0');
761 SCREWUP("size not delimited");
763 static char *namebuf;
767 need = strlen(targ) + strlen(cp) + 250;
768 if (need > cursize) {
771 namebuf = xmalloc(need);
774 (void) snprintf(namebuf, need, "%s%s%s", targ,
775 *targ ? "/" : "", cp);
780 exists = stat(np, &stb) == 0;
782 int mod_flag = pflag;
784 if (!S_ISDIR(stb.st_mode)) {
789 (void) chmod(np, mode);
791 /* Handle copying from a read-only
794 if (mkdir(np, mode | S_IRWXU) < 0)
797 vect[0] = xstrdup(np);
801 if (utimes(vect[0], tv) < 0)
802 run_err("%s: set times: %s",
803 vect[0], strerror(errno));
806 (void) chmod(vect[0], mode);
813 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
814 bad: run_err("%s: %s", np, strerror(errno));
817 (void) atomicio(write, remout, "", 1);
818 if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
830 for (count = i = 0; i < size; i += 4096) {
836 j = read(remin, cp, amt);
837 if (j == -1 && (errno == EINTR ||
841 run_err("%s", j ? strerror(errno) :
842 "dropped connection");
849 if (count == bp->cnt) {
850 /* Keep reading so we stay sync'd up. */
852 j = atomicio(write, ofd, bp->buf, count);
855 wrerrno = j >= 0 ? EIO : errno;
864 if (count != 0 && wrerr == NO &&
865 (j = atomicio(write, ofd, bp->buf, count)) != count) {
867 wrerrno = j >= 0 ? EIO : errno;
869 if (ftruncate(ofd, size)) {
870 run_err("%s: truncate: %s", np, strerror(errno));
874 if (exists || omode != mode)
876 if (fchmod(ofd, omode))
877 #else /* HAVE_FCHMOD */
878 if (chmod(np, omode))
879 #endif /* HAVE_FCHMOD */
880 run_err("%s: set mode: %s",
881 np, strerror(errno));
883 if (!exists && omode != mode)
885 if (fchmod(ofd, omode & ~mask))
886 #else /* HAVE_FCHMOD */
887 if (chmod(np, omode & ~mask))
888 #endif /* HAVE_FCHMOD */
889 run_err("%s: set mode: %s",
890 np, strerror(errno));
892 if (close(ofd) == -1) {
897 if (setimes && wrerr == NO) {
899 if (utimes(np, tv) < 0) {
900 run_err("%s: set times: %s",
901 np, strerror(errno));
907 run_err("%s: %s", np, strerror(wrerrno));
910 (void) atomicio(write, remout, "", 1);
917 run_err("protocol error: %s", why);
924 char ch, *cp, resp, rbuf[2048];
926 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
936 case 1: /* error, followed by error msg */
937 case 2: /* fatal error, "" */
939 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
942 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
945 (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
957 (void) fprintf(stderr, "usage: scp "
958 "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] "
959 "[-o option] f1 f2\n"
960 " or: scp [options] f1 ... fn directory\n");
965 run_err(const char *fmt,...)
971 if (fp == NULL && !(fp = fdopen(remout, "w")))
973 (void) fprintf(fp, "%c", 0x01);
974 (void) fprintf(fp, "scp: ");
976 (void) vfprintf(fp, fmt, ap);
978 (void) fprintf(fp, "\n");
983 vfprintf(stderr, fmt, ap);
985 fprintf(stderr, "\n");
995 if (!stat(cp, &stb)) {
996 if (S_ISDIR(stb.st_mode))
1000 run_err("%s: %s", cp, strerror(errno));
1016 if (!isalpha(c) && !isdigit(c) &&
1017 c != '_' && c != '-' && c != '.' && c != '+')
1022 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1027 allocbuf(bp, fd, blksize)
1032 #ifdef HAVE_ST_BLKSIZE
1035 if (fstat(fd, &stb) < 0) {
1036 run_err("fstat: %s", strerror(errno));
1039 if (stb.st_blksize == 0)
1042 size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1044 #else /* HAVE_ST_BLKSIZE */
1046 #endif /* HAVE_ST_BLKSIZE */
1047 if (bp->cnt >= size)
1049 if (bp->buf == NULL)
1050 bp->buf = xmalloc(size);
1052 bp->buf = xrealloc(bp->buf, size);
1053 memset(bp->buf, 0, size);
1063 write(STDERR_FILENO, "lost connection\n", 16);
1071 updateprogressmeter(int ignore)
1073 int save_errno = errno;
1076 signal(SIGALRM, updateprogressmeter);
1077 alarm(PROGRESSTIME);
1082 foregroundproc(void)
1084 static pid_t pgrp = -1;
1090 #ifdef HAVE_TCGETPGRP
1091 return ((ctty_pgrp = tcgetpgrp(STDOUT_FILENO)) != -1 &&
1094 return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1095 ctty_pgrp == pgrp));
1100 progressmeter(int flag)
1102 static const char prefixes[] = " KMGTP";
1103 static struct timeval lastupdate;
1104 static off_t lastsize;
1105 struct timeval now, td, wait;
1106 off_t cursize, abbrevsize;
1108 int ratio, barlength, i, remaining;
1112 (void) gettimeofday(&start, (struct timezone *) 0);
1116 if (foregroundproc() == 0)
1119 (void) gettimeofday(&now, (struct timezone *) 0);
1120 cursize = statbytes;
1121 if (totalbytes != 0) {
1122 ratio = 100.0 * cursize / totalbytes;
1123 ratio = MAX(ratio, 0);
1124 ratio = MIN(ratio, 100);
1128 snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1130 barlength = getttywidth() - 51;
1131 barlength = (barlength <= MAX_BARLENGTH)?barlength:MAX_BARLENGTH;
1132 if (barlength > 0) {
1133 i = barlength * ratio / 100;
1134 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1135 "|%.*s%*s|", i, BAR, barlength - i, "");
1138 abbrevsize = cursize;
1139 while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1143 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5lu %c%c ",
1144 (unsigned long) abbrevsize, prefixes[i],
1145 prefixes[i] == ' ' ? ' ' : 'B');
1147 timersub(&now, &lastupdate, &wait);
1148 if (cursize > lastsize) {
1151 if (wait.tv_sec >= STALLTIME) {
1152 start.tv_sec += wait.tv_sec;
1153 start.tv_usec += wait.tv_usec;
1157 timersub(&now, &start, &td);
1158 elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1161 (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1162 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1164 } else if (wait.tv_sec >= STALLTIME) {
1165 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1169 remaining = (int)(totalbytes / (statbytes / elapsed) -
1172 remaining = elapsed;
1174 i = remaining / 3600;
1176 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1179 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1181 i = remaining % 3600;
1182 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1183 "%02d:%02d%s", i / 60, i % 60,
1184 (flag != 1) ? " ETA" : " ");
1186 atomicio(write, fileno(stdout), buf, strlen(buf));
1189 mysignal(SIGALRM, updateprogressmeter);
1190 alarm(PROGRESSTIME);
1191 } else if (flag == 1) {
1193 atomicio(write, fileno(stdout), "\n", 1);
1201 struct winsize winsize;
1203 if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1204 return (winsize.ws_col ? winsize.ws_col : 80);