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Annotation of src/usr.bin/ar/extract.c, Revision 1.1

1.1     ! deraadt     1: /*     $NetBSD: extract.c,v 1.5 1995/03/26 03:27:53 glass Exp $        */
        !             2:
        !             3: /*-
        !             4:  * Copyright (c) 1990, 1993, 1994
        !             5:  *     The Regents of the University of California.  All rights reserved.
        !             6:  *
        !             7:  * This code is derived from software contributed to Berkeley by
        !             8:  * Hugh Smith at The University of Guelph.
        !             9:  *
        !            10:  * Redistribution and use in source and binary forms, with or without
        !            11:  * modification, are permitted provided that the following conditions
        !            12:  * are met:
        !            13:  * 1. Redistributions of source code must retain the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer.
        !            15:  * 2. Redistributions in binary form must reproduce the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer in the
        !            17:  *    documentation and/or other materials provided with the distribution.
        !            18:  * 3. All advertising materials mentioning features or use of this software
        !            19:  *    must display the following acknowledgement:
        !            20:  *     This product includes software developed by the University of
        !            21:  *     California, Berkeley and its contributors.
        !            22:  * 4. Neither the name of the University nor the names of its contributors
        !            23:  *    may be used to endorse or promote products derived from this software
        !            24:  *    without specific prior written permission.
        !            25:  *
        !            26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            36:  * SUCH DAMAGE.
        !            37:  */
        !            38:
        !            39: #ifndef lint
        !            40: #if 0
        !            41: static char sccsid[] = "@(#)extract.c  8.3 (Berkeley) 4/2/94";
        !            42: #else
        !            43: static char rcsid[] = "$NetBSD: extract.c,v 1.5 1995/03/26 03:27:53 glass Exp $";
        !            44: #endif
        !            45: #endif /* not lint */
        !            46:
        !            47: #include <sys/param.h>
        !            48: #include <sys/time.h>
        !            49: #include <sys/stat.h>
        !            50:
        !            51: #include <dirent.h>
        !            52: #include <err.h>
        !            53: #include <fcntl.h>
        !            54: #include <stdio.h>
        !            55: #include <string.h>
        !            56: #include <unistd.h>
        !            57:
        !            58: #include "archive.h"
        !            59: #include "extern.h"
        !            60:
        !            61: /*
        !            62:  * extract --
        !            63:  *     Extract files from the named archive - if member names given only
        !            64:  *     extract those members otherwise extract all members.  If 'o' option
        !            65:  *     selected modify date of newly created file to be same as archive
        !            66:  *     members date otherwise date is time of extraction.  Does not modify
        !            67:  *     archive.
        !            68:  */
        !            69: int
        !            70: extract(argv)
        !            71:        char **argv;
        !            72: {
        !            73:        char *file;
        !            74:        int afd, all, eval, tfd;
        !            75:        struct timeval tv[2];
        !            76:        struct stat sb;
        !            77:        CF cf;
        !            78:
        !            79:        eval = 0;
        !            80:        tv[0].tv_usec = tv[1].tv_usec = 0;
        !            81:
        !            82:        afd = open_archive(O_RDONLY);
        !            83:
        !            84:        /* Read from an archive, write to disk; pad on read. */
        !            85:        SETCF(afd, archive, 0, 0, RPAD);
        !            86:        for (all = !*argv; get_arobj(afd);) {
        !            87:                if (all)
        !            88:                        file = chdr.name;
        !            89:                else if (!(file = files(argv))) {
        !            90:                        skip_arobj(afd);
        !            91:                        continue;
        !            92:                }
        !            93:
        !            94:                if (options & AR_U && !stat(file, &sb) &&
        !            95:                    sb.st_mtime > chdr.date)
        !            96:                        continue;
        !            97:
        !            98:                if ((tfd = open(file, O_WRONLY|O_CREAT|O_TRUNC, S_IWUSR)) < 0) {
        !            99:                        warn("%s", file);
        !           100:                        skip_arobj(afd);
        !           101:                        eval = 1;
        !           102:                        continue;
        !           103:                }
        !           104:
        !           105:                if (options & AR_V)
        !           106:                        (void)printf("x - %s\n", file);
        !           107:
        !           108:                cf.wfd = tfd;
        !           109:                cf.wname = file;
        !           110:                copy_ar(&cf, chdr.size);
        !           111:
        !           112:                if (fchmod(tfd, (short)chdr.mode)) {
        !           113:                        warn("chmod: %s", file);
        !           114:                        eval = 1;
        !           115:                }
        !           116:                if (options & AR_O) {
        !           117:                        tv[0].tv_sec = tv[1].tv_sec = chdr.date;
        !           118:                        if (utimes(file, tv)) {
        !           119:                                warn("utimes: %s", file);
        !           120:                                eval = 1;
        !           121:                        }
        !           122:                }
        !           123:                (void)close(tfd);
        !           124:                if (!all && !*argv)
        !           125:                        break;
        !           126:        }
        !           127:        close_archive(afd);
        !           128:
        !           129:        if (*argv) {
        !           130:                orphans(argv);
        !           131:                return (1);
        !           132:        }
        !           133:        return (0);
        !           134: }