133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
/*-
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* Copyright (c) 1990, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Hugh Smith at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef lint
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static const char sccsid[] = "@(#)extract.c 8.3 (Berkeley) 4/2/94";
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#endif
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include <err.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "archive.h"
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#include "extern.h"
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/*
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* extract --
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* Extract files from the named archive - if member names given only
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* extract those members otherwise extract all members. If 'o' option
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* selected modify date of newly created file to be same as archive
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* members date otherwise date is time of extraction. Does not modify
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* archive.
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*/
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int
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extract(argv)
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char **argv;
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{
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char *file;
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int afd, all, eval, tfd;
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struct timeval tv[2];
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struct stat sb;
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CF cf;
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eval = 0;
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tv[0].tv_usec = tv[1].tv_usec = 0;
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afd = open_archive(O_RDONLY);
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/* Read from an archive, write to disk; pad on read. */
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SETCF(afd, archive, 0, 0, RPAD);
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for (all = !*argv; get_arobj(afd);) {
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if (all)
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file = chdr.name;
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else if (!(file = files(argv))) {
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skip_arobj(afd);
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continue;
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}
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if (options & AR_U && !stat(file, &sb) &&
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sb.st_mtime > chdr.date)
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continue;
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if ((tfd = open(file, O_WRONLY|O_CREAT|O_TRUNC, S_IWUSR)) < 0) {
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warn("%s", file);
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skip_arobj(afd);
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eval = 1;
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continue;
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}
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if (options & AR_V)
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(void)printf("x - %s\n", file);
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cf.wfd = tfd;
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cf.wname = file;
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copy_ar(&cf, chdr.size);
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if (fchmod(tfd, (short)chdr.mode)) {
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warn("chmod: %s", file);
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eval = 1;
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}
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if (options & AR_O) {
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tv[0].tv_sec = tv[1].tv_sec = chdr.date;
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if (utimes(file, tv)) {
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warn("utimes: %s", file);
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eval = 1;
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}
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}
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(void)close(tfd);
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if (!all && !*argv)
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break;
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}
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close_archive(afd);
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if (*argv) {
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orphans(argv);
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return (1);
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}
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return (0);
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}
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