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 1.72 2001/06/03 19:38:42 markus Exp $");
82 #include "pathnames.h"
86 #ifdef HAVE___PROGNAME
87 extern char *__progname;
92 /* For progressmeter() -- number of seconds before xfer considered "stalled" */
95 /* Progress meter bar */
97 "************************************************************"\
98 "************************************************************"\
99 "************************************************************"\
100 "************************************************************"
101 #define MAX_BARLENGTH (sizeof(BAR) - 1)
103 /* Visual statistics about files as they are transferred. */
104 void progressmeter(int);
106 /* Returns width of the terminal (for progress meter calculations). */
107 int getttywidth(void);
108 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
110 /* Struct for addargs */
113 /* Time a transfer started. */
114 static struct timeval start;
116 /* Number of bytes of current file transferred so far. */
117 volatile off_t statbytes;
119 /* Total size of current file. */
120 off_t totalbytes = 0;
122 /* Name of current file being transferred. */
125 /* This is set to non-zero to enable verbose mode. */
126 int verbose_mode = 0;
128 /* This is set to zero if the progressmeter is not desired. */
129 int showprogress = 1;
131 /* This is the program to execute for the secured connection. ("ssh" or -S) */
132 char *ssh_program = _PATH_SSH_PROGRAM;
135 * This function executes the given command as the specified user on the
136 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
137 * assigns the input and output file descriptors on success.
141 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
143 int pin[2], pout[2], reserved[2];
146 fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n",
147 ssh_program, host, remuser ? remuser : "(unspecified)", cmd);
150 * Reserve two descriptors so that the real pipes won't get
151 * descriptors 0 and 1 because that will screw up dup2 below.
155 /* Create a socket pair for communicating with ssh. */
157 fatal("pipe: %s", strerror(errno));
159 fatal("pipe: %s", strerror(errno));
161 /* Free the reserved descriptors. */
165 /* For a child to execute the command on the remote host using ssh. */
175 args.list[0] = ssh_program;
177 addargs(&args, "-l%s", remuser);
178 addargs(&args, "%s", host);
179 addargs(&args, "%s", cmd);
181 execvp(ssh_program, args.list);
185 /* Parent. Close the other side, and return the local side. */
198 BUF *allocbuf(BUF *, int, int);
202 void run_err(const char *,...);
203 void verifydir(char *);
207 int errs, remin, remout;
208 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
211 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
214 void rsource(char *, struct stat *);
215 void sink(int, char *[]);
216 void source(int, char *[]);
217 void tolocal(int, char *[]);
218 void toremote(char *, int, char *[]);
226 int ch, fflag, tflag;
231 __progname = get_progname(argv[0]);
234 addargs(&args, "ssh"); /* overwritten with ssh_program */
235 addargs(&args, "-x");
236 addargs(&args, "-oFallBackToRsh no");
239 while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
241 /* User-visible flags. */
245 addargs(&args, "-%c", ch);
250 addargs(&args, "-%c%s", ch, optarg);
253 addargs(&args, "-p%s", optarg);
256 addargs(&args, "-oBatchmode yes");
265 ssh_program = xstrdup(optarg);
268 addargs(&args, "-v");
275 /* Server options. */
277 targetshouldbedirectory = 1;
279 case 'f': /* "from" */
287 setmode(0, O_BINARY);
296 if ((pwd = getpwuid(userid = getuid())) == NULL)
297 fatal("unknown user %d", (int) userid);
299 if (!isatty(STDERR_FILENO))
302 remin = STDIN_FILENO;
303 remout = STDOUT_FILENO;
306 /* Follow "protocol", send data. */
319 targetshouldbedirectory = 1;
322 /* Command to be executed on remote system using "ssh". */
323 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
324 verbose_mode ? " -v" : "",
325 iamrecursive ? " -r" : "", pflag ? " -p" : "",
326 targetshouldbedirectory ? " -d" : "");
328 (void) signal(SIGPIPE, lostconn);
330 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
331 toremote(targ, argc, argv);
333 tolocal(argc, argv); /* Dest is local host. */
334 if (targetshouldbedirectory)
335 verifydir(argv[argc - 1]);
341 toremote(targ, argc, argv)
346 char *bp, *host, *src, *suser, *thost, *tuser;
352 if ((thost = strchr(argv[argc - 1], '@'))) {
355 tuser = argv[argc - 1];
358 else if (!okname(tuser))
361 thost = argv[argc - 1];
365 for (i = 0; i < argc - 1; i++) {
366 src = colon(argv[i]);
367 if (src) { /* remote to remote */
371 host = strchr(argv[i], '@');
372 len = strlen(ssh_program) + strlen(argv[i]) +
373 strlen(src) + (tuser ? strlen(tuser) : 0) +
374 strlen(thost) + strlen(targ) + CMDNEEDS + 32;
378 host = cleanhostname(host);
381 suser = pwd->pw_name;
382 else if (!okname(suser))
385 "%s%s -x -o'FallBackToRsh no' -n "
386 "-l %s %s %s %s '%s%s%s:%s'",
387 ssh_program, verbose_mode ? " -v" : "",
388 suser, host, cmd, src,
389 tuser ? tuser : "", tuser ? "@" : "",
392 host = cleanhostname(argv[i]);
394 "exec %s%s -x -o'FallBackToRsh no' -n %s "
396 ssh_program, verbose_mode ? " -v" : "",
398 tuser ? tuser : "", tuser ? "@" : "",
402 fprintf(stderr, "Executing: %s\n", bp);
405 } else { /* local to remote */
407 len = strlen(targ) + CMDNEEDS + 20;
409 (void) snprintf(bp, len, "%s -t %s", cmd, targ);
410 host = cleanhostname(thost);
411 if (do_cmd(host, tuser, bp, &remin,
429 char *bp, *host, *src, *suser;
431 for (i = 0; i < argc - 1; i++) {
432 if (!(src = colon(argv[i]))) { /* Local to local. */
433 len = strlen(_PATH_CP) + strlen(argv[i]) +
434 strlen(argv[argc - 1]) + 20;
436 (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
437 iamrecursive ? " -r" : "", pflag ? " -p" : "",
438 argv[i], argv[argc - 1]);
440 fprintf(stderr, "Executing: %s\n", bp);
449 if ((host = strchr(argv[i], '@')) == NULL) {
456 suser = pwd->pw_name;
457 else if (!okname(suser))
460 host = cleanhostname(host);
461 len = strlen(src) + CMDNEEDS + 20;
463 (void) snprintf(bp, len, "%s -f %s", cmd, src);
464 if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
470 sink(1, argv + argc - 1);
484 off_t i, amt, result;
485 int fd, haderr, indx;
486 char *last, *name, buf[2048];
489 for (indx = 0; indx < argc; ++indx) {
493 while (len > 1 && name[len-1] == '/')
495 if ((fd = open(name, O_RDONLY, 0)) < 0)
497 if (fstat(fd, &stb) < 0) {
498 syserr: run_err("%s: %s", name, strerror(errno));
501 switch (stb.st_mode & S_IFMT) {
511 run_err("%s: not a regular file", name);
514 if ((last = strrchr(name, '/')) == NULL)
521 * Make it compatible with possible future
522 * versions expecting microseconds.
524 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
525 (u_long) stb.st_mtime,
526 (u_long) stb.st_atime);
527 (void) atomicio(write, remout, buf, strlen(buf));
531 #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
532 #ifdef HAVE_LONG_LONG_INT
533 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
534 (u_int) (stb.st_mode & FILEMODEMASK),
535 (long long) stb.st_size, last);
537 /* XXX: Handle integer overflow? */
538 snprintf(buf, sizeof buf, "C%04o %lu %s\n",
539 (u_int) (stb.st_mode & FILEMODEMASK),
540 (u_long) stb.st_size, last);
544 fprintf(stderr, "Sending file modes: %s", buf);
547 (void) atomicio(write, remout, buf, strlen(buf));
550 if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
551 next: (void) close(fd);
555 totalbytes = stb.st_size;
558 /* Keep writing after an error so that we stay sync'd up. */
559 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
561 if (i + amt > stb.st_size)
562 amt = stb.st_size - i;
564 result = atomicio(read, fd, bp->buf, amt);
566 haderr = result >= 0 ? EIO : errno;
569 (void) atomicio(write, remout, bp->buf, amt);
571 result = atomicio(write, remout, bp->buf, amt);
573 haderr = result >= 0 ? EIO : errno;
580 if (close(fd) < 0 && !haderr)
583 (void) atomicio(write, remout, "", 1);
585 run_err("%s: %s", name, strerror(haderr));
597 char *last, *vect[1], path[1100];
599 if (!(dirp = opendir(name))) {
600 run_err("%s: %s", name, strerror(errno));
603 last = strrchr(name, '/');
609 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
610 (u_long) statp->st_mtime,
611 (u_long) statp->st_atime);
612 (void) atomicio(write, remout, path, strlen(path));
613 if (response() < 0) {
618 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
619 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
621 fprintf(stderr, "Entering directory: %s", path);
622 (void) atomicio(write, remout, path, strlen(path));
623 if (response() < 0) {
627 while ((dp = readdir(dirp)) != NULL) {
630 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
632 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
633 run_err("%s/%s: name too long", name, dp->d_name);
636 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
640 (void) closedir(dirp);
641 (void) atomicio(write, remout, "E\n", 2);
657 int amt, count, exists, first, mask, mode, ofd, omode;
659 int setimes, targisdir, wrerrno = 0;
660 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
661 struct timeval tv[2];
665 #define SCREWUP(str) { why = str; goto screwup; }
667 setimes = targisdir = 0;
672 run_err("ambiguous target");
676 if (targetshouldbedirectory)
679 (void) atomicio(write, remout, "", 1);
680 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
682 for (first = 1;; first = 0) {
684 if (atomicio(read, remin, cp, 1) <= 0)
687 SCREWUP("unexpected <newline>");
689 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
690 SCREWUP("lost connection");
692 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
695 if (buf[0] == '\01' || buf[0] == '\02') {
697 (void) atomicio(write, STDERR_FILENO,
698 buf + 1, strlen(buf + 1));
705 (void) atomicio(write, remout, "", 1);
715 mtime.tv_sec = strtol(cp, &cp, 10);
716 if (!cp || *cp++ != ' ')
717 SCREWUP("mtime.sec not delimited");
718 mtime.tv_usec = strtol(cp, &cp, 10);
719 if (!cp || *cp++ != ' ')
720 SCREWUP("mtime.usec not delimited");
721 atime.tv_sec = strtol(cp, &cp, 10);
722 if (!cp || *cp++ != ' ')
723 SCREWUP("atime.sec not delimited");
724 atime.tv_usec = strtol(cp, &cp, 10);
725 if (!cp || *cp++ != '\0')
726 SCREWUP("atime.usec not delimited");
727 (void) atomicio(write, remout, "", 1);
730 if (*cp != 'C' && *cp != 'D') {
732 * Check for the case "rcp remote:foo\* local:bar".
733 * In this case, the line "No match." can be returned
734 * by the shell before the rcp command on the remote is
735 * executed so the ^Aerror_message convention isn't
742 SCREWUP("expected control record");
745 for (++cp; cp < buf + 5; cp++) {
746 if (*cp < '0' || *cp > '7')
748 mode = (mode << 3) | (*cp - '0');
751 SCREWUP("mode not delimited");
753 for (size = 0; isdigit(*cp);)
754 size = size * 10 + (*cp++ - '0');
756 SCREWUP("size not delimited");
758 static char *namebuf;
762 need = strlen(targ) + strlen(cp) + 250;
763 if (need > cursize) {
766 namebuf = xmalloc(need);
769 (void) snprintf(namebuf, need, "%s%s%s", targ,
770 *targ ? "/" : "", cp);
775 exists = stat(np, &stb) == 0;
777 int mod_flag = pflag;
779 if (!S_ISDIR(stb.st_mode)) {
784 (void) chmod(np, mode);
786 /* Handle copying from a read-only
789 if (mkdir(np, mode | S_IRWXU) < 0)
792 vect[0] = xstrdup(np);
796 if (utimes(vect[0], tv) < 0)
797 run_err("%s: set times: %s",
798 vect[0], strerror(errno));
801 (void) chmod(vect[0], mode);
808 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
809 bad: run_err("%s: %s", np, strerror(errno));
812 (void) atomicio(write, remout, "", 1);
813 if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
825 for (count = i = 0; i < size; i += 4096) {
831 j = read(remin, cp, amt);
832 if (j == -1 && (errno == EINTR || errno == EAGAIN)) {
835 run_err("%s", j ? strerror(errno) :
836 "dropped connection");
843 if (count == bp->cnt) {
844 /* Keep reading so we stay sync'd up. */
846 j = atomicio(write, ofd, bp->buf, count);
849 wrerrno = j >= 0 ? EIO : errno;
858 if (count != 0 && wrerr == NO &&
859 (j = atomicio(write, ofd, bp->buf, count)) != count) {
861 wrerrno = j >= 0 ? EIO : errno;
863 if (ftruncate(ofd, size)) {
864 run_err("%s: truncate: %s", np, strerror(errno));
868 if (exists || omode != mode)
870 if (fchmod(ofd, omode))
871 #else /* HAVE_FCHMOD */
872 if (chmod(np, omode))
873 #endif /* HAVE_FCHMOD */
874 run_err("%s: set mode: %s",
875 np, strerror(errno));
877 if (!exists && omode != mode)
879 if (fchmod(ofd, omode & ~mask))
880 #else /* HAVE_FCHMOD */
881 if (chmod(np, omode & ~mask))
882 #endif /* HAVE_FCHMOD */
883 run_err("%s: set mode: %s",
884 np, strerror(errno));
886 if (close(ofd) == -1) {
891 if (setimes && wrerr == NO) {
893 if (utimes(np, tv) < 0) {
894 run_err("%s: set times: %s",
895 np, strerror(errno));
901 run_err("%s: %s", np, strerror(wrerrno));
904 (void) atomicio(write, remout, "", 1);
911 run_err("protocol error: %s", why);
918 char ch, *cp, resp, rbuf[2048];
920 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
930 case 1: /* error, followed by error msg */
931 case 2: /* fatal error, "" */
933 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
936 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
939 (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
951 (void) fprintf(stderr, "usage: scp "
952 "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2\n"
953 " or: scp [options] f1 ... fn directory\n");
958 run_err(const char *fmt,...)
964 if (fp == NULL && !(fp = fdopen(remout, "w")))
966 (void) fprintf(fp, "%c", 0x01);
967 (void) fprintf(fp, "scp: ");
969 (void) vfprintf(fp, fmt, ap);
971 (void) fprintf(fp, "\n");
976 vfprintf(stderr, fmt, ap);
978 fprintf(stderr, "\n");
988 if (!stat(cp, &stb)) {
989 if (S_ISDIR(stb.st_mode))
993 run_err("%s: %s", cp, strerror(errno));
1009 if (!isalpha(c) && !isdigit(c) &&
1010 c != '_' && c != '-' && c != '.' && c != '+')
1015 bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1020 allocbuf(bp, fd, blksize)
1025 #ifdef HAVE_ST_BLKSIZE
1028 if (fstat(fd, &stb) < 0) {
1029 run_err("fstat: %s", strerror(errno));
1032 if (stb.st_blksize == 0)
1035 size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1037 #else /* HAVE_ST_BLKSIZE */
1039 #endif /* HAVE_ST_BLKSIZE */
1040 if (bp->cnt >= size)
1042 if (bp->buf == NULL)
1043 bp->buf = xmalloc(size);
1045 bp->buf = xrealloc(bp->buf, size);
1055 fprintf(stderr, "lost connection\n");
1061 alarmtimer(int wait)
1063 struct itimerval itv;
1065 itv.it_value.tv_sec = wait;
1066 itv.it_value.tv_usec = 0;
1067 itv.it_interval = itv.it_value;
1068 setitimer(ITIMER_REAL, &itv, NULL);
1072 updateprogressmeter(int ignore)
1074 int save_errno = errno;
1081 foregroundproc(void)
1083 static pid_t pgrp = -1;
1089 #ifdef HAVE_TCGETPGRP
1090 return ((ctty_pgrp = tcgetpgrp(STDOUT_FILENO)) != -1 &&
1093 return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1094 ctty_pgrp == pgrp));
1099 progressmeter(int flag)
1101 static const char prefixes[] = " KMGTP";
1102 static struct timeval lastupdate;
1103 static off_t lastsize;
1104 struct timeval now, td, wait;
1105 off_t cursize, abbrevsize;
1107 int ratio, barlength, i, remaining;
1111 (void) gettimeofday(&start, (struct timezone *) 0);
1115 if (foregroundproc() == 0)
1118 (void) gettimeofday(&now, (struct timezone *) 0);
1119 cursize = statbytes;
1120 if (totalbytes != 0) {
1121 ratio = 100.0 * cursize / totalbytes;
1122 ratio = MAX(ratio, 0);
1123 ratio = MIN(ratio, 100);
1127 snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1129 barlength = getttywidth() - 51;
1130 barlength = (barlength <= MAX_BARLENGTH)?barlength:MAX_BARLENGTH;
1131 if (barlength > 0) {
1132 i = barlength * ratio / 100;
1133 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1134 "|%.*s%*s|", i, BAR, barlength - i, "");
1137 abbrevsize = cursize;
1138 while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1142 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5lu %c%c ",
1143 (unsigned long) abbrevsize, prefixes[i],
1144 prefixes[i] == ' ' ? ' ' : 'B');
1146 timersub(&now, &lastupdate, &wait);
1147 if (cursize > lastsize) {
1150 if (wait.tv_sec >= STALLTIME) {
1151 start.tv_sec += wait.tv_sec;
1152 start.tv_usec += wait.tv_usec;
1156 timersub(&now, &start, &td);
1157 elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1160 (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1161 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1163 } else if (wait.tv_sec >= STALLTIME) {
1164 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1168 remaining = (int)(totalbytes / (statbytes / elapsed) -
1171 remaining = elapsed;
1173 i = remaining / 3600;
1175 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1178 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1180 i = remaining % 3600;
1181 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1182 "%02d:%02d%s", i / 60, i % 60,
1183 (flag != 1) ? " ETA" : " ");
1185 atomicio(write, fileno(stdout), buf, strlen(buf));
1188 mysignal(SIGALRM, updateprogressmeter);
1190 } else if (flag == 1) {
1192 atomicio(write, fileno(stdout), "\n", 1);
1200 struct winsize winsize;
1202 if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1203 return (winsize.ws_col ? winsize.ws_col : 80);