usr.bin/ar/delete.c

   1 /*-
   2  * Copyright (c) 1990, 1993, 1994
   3  *      The Regents of the University of California.  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  * @(#)delete.c 8.3 (Berkeley) 4/2/94
  37  *
  38  * $DragonFly: src/usr.bin/ar/delete.c,v 1.4 2005/01/13 19:57:56 okumoto Exp $
  39  */
  40
  41 #include <sys/param.h>
  42 #include <sys/stat.h>
  43
  44 #include <ar.h>
  45 #include <dirent.h>
  46 #include <fcntl.h>
  47 #include <stdio.h>
  48 #include <unistd.h>
  49
  50 #include "archive.h"
  51 #include "extern.h"
  52 #include "pathnames.h"
  53
  54 /*-
  55  * delete --
  56  *      Deletes named members from the archive.
  57  */
  58 int
  59 delete(char **argv)
  60 {
  61         CF cf;
  62         off_t size;
  63         int afd, tfd;
  64         char *file;
  65
  66         afd = open_archive(O_RDWR);
  67         tfd = tmp();
  68
  69         /* Read and write to an archive; pad on both. */
  70         SETCF(afd, archive, tfd, tname, RPAD|WPAD);
  71         while (get_arobj(afd)) {
  72                 if (*argv && (file = files(argv))) {
  73                         if (options & AR_V)
  74                                 printf("d - %s\n", file);
  75                         skip_arobj(afd);
  76                         continue;
  77                 }
  78                 put_arobj(&cf, (struct stat *)NULL);
  79         }
  80
  81         size = lseek(tfd, (off_t)0, SEEK_CUR);
  82         lseek(tfd, (off_t)0, SEEK_SET);
  83         lseek(afd, (off_t)SARMAG, SEEK_SET);
  84         SETCF(tfd, tname, afd, archive, NOPAD);
  85         copy_ar(&cf, size);
  86         close(tfd);
  87         ftruncate(afd, size + SARMAG);
  88         close_archive(afd);
  89
  90         if (*argv) {
  91                 orphans(argv);
  92                 return (1);
  93         }
  94         return (0);
  95 }