# 2.11BSD#431 - /usr/src/bin/ar/extract.c

##### Functions

    extract           X

       1: /*-
       2:  * Copyright (c) 1990 The Regents of the University of California.
       3:  * All rights reserved.
       4:  *
       5:  * This code is derived from software contributed to Berkeley by
       6:  * Hugh Smith at The University of Guelph.
       7:  *
       8:  * Redistribution and use in source and binary forms, with or without
       9:  * modification, are permitted provided that the following conditions
      10:  * are met:
      11:  * 1. Redistributions of source code must retain the above copyright
      12:  *    notice, this list of conditions and the following disclaimer.
      13:  * 2. Redistributions in binary form must reproduce the above copyright
      14:  *    notice, this list of conditions and the following disclaimer in the
      15:  *    documentation and/or other materials provided with the distribution.
      16:  * 3. All advertising materials mentioning features or use of this software
      17:  *    must display the following acknowledgement:
      18:  *	This product includes software developed by the University of
      19:  *	California, Berkeley and its contributors.
      20:  * 4. Neither the name of the University nor the names of its contributors
      21:  *    may be used to endorse or promote products derived from this software
      22:  *    without specific prior written permission.
      23:  *
      24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
      25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
      28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      34:  * SUCH DAMAGE.
      35:  */
      36:
      37: #if defined(DOSCCS) && !defined(lint)
      38: static char sccsid[] = "@(#)extract.c	5.5 (Berkeley) 3/12/91";
      39: #endif
      40:
      41: #include <sys/param.h>
      42: #include <sys/time.h>
      43: #include <sys/stat.h>
      44: #include <fcntl.h>
      45: #include <errno.h>
      46: #include <sys/dir.h>
      47: #include <stdio.h>
      48: #include <string.h>
      49: #include "archive.h"
      50: #include "extern.h"
      51:
      52: extern int errno;
      53: extern CHDR chdr;           /* converted header */
      54: extern char *archive;           /* archive name */
      55:
      56: /*
      57:  * extract --
      58:  *	Extract files from the named archive - if member names given only
      59:  *	extract those members otherwise extract all members.  If 'o' option
      60:  *	selected modify date of newly created file to be same as archive
      61:  *	members date otherwise date is time of extraction.  Does not modify
      62:  *	archive.
      63:  */
      64: extract(argv)
      65:     char **argv;
      66: {
      67:     register int afd, all, tfd;
      68:     struct timeval tv[2];
      69:     struct stat sb;
      70:     CF cf;
      71:     char *file;
      72:
      73:     tv[0].tv_usec = tv[1].tv_usec = 0;
      74:
      75:     afd = open_archive(O_RDONLY);
      76:
      77:     /* Read from an archive, write to disk; pad on read. */
      78:     SETCF(afd, archive, 0, 0, RPAD);
      79:     for (all = !*argv; get_arobj(afd);) {
      80:         if (all)
      81:             file = chdr.name;
      82:         else if (!(file = files(argv))) {
      83:             skip_arobj(afd);
      84:             continue;
      85:         }
      86:
      87:         if (options & AR_U && !stat(file, &sb) &&
      88:             sb.st_mtime > chdr.date)
      89:             continue;
      90:
      91:         if ((tfd = open(file, O_WRONLY|O_CREAT|O_TRUNC, 0200)) < 0) {
      92:             (void)fprintf(stderr, "ar: %s: %s.\n",
      93:                 file, strerror(errno));
      94:             skip_arobj(afd);
      95:             continue;
      96:         }
      97:
      98:         if (options & AR_V)
      99:             (void)printf("x - %s\n", file);
     100:
     101:         cf.wfd = tfd;
     102:         cf.wname = file;
     103:         copy_ar(&cf, chdr.size);
     104:
     105:         if (fchmod(tfd, (short)chdr.mode)) {
     106:             (void)fprintf(stderr, "ar: %s: chmod: %s\n",
     107:                 file, strerror(errno));
     108:         }
     109:         if (options & AR_O) {
     110:             tv[0].tv_sec = tv[1].tv_sec = chdr.date;
     111:             if (utimes(file, tv)) {
     112:                 (void)fprintf(stderr, "ar: %s: utimes: %s\n",
     113:                     file, strerror(errno));
     114:             }
     115:         }
     116:         (void)close(tfd);
     117:         if (!all && !*argv)
     118:             break;
     119:     }
     120:     close_archive(afd);
     121:
     122:     if (*argv) {
     123:         orphans(argv);
     124:         return(1);
     125:     }
     126:     return(0);
     127: }

#### Defined functions

extract defined in line 64; used 2 times

- in /usr/src/bin/ar/ar.c line 76, 149

#### Defined variables

sccsid defined in line 38; never used

Last modified: 1993-09-25 Generated: 2016-12-26 | Generated by src2html V0.67 page hit count: 1306 |