BSD 4_4 release

[unix-history] / usr / src / usr.bin / ar / move.c

/*-
* Copyright (c) 1990, 1993
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Hugh Smith at The University of Guelph.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef lint
static char sccsid[] = "@(#)move.c      8.1 (Berkeley) 6/6/93";
#endif /* not lint */

#include <sys/param.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>
#include <unistd.h>
#include <stdio.h>
#include <ar.h>
#include "archive.h"
#include "extern.h"
#include "pathnames.h"

extern CHDR chdr;                       /* converted header */
extern char *archive;                   /* archive name */
extern char *tname;                     /* temporary file "name" */

/*
* move --
*      Change location of named members in archive - if 'b' or 'i' option
*      selected then named members are placed before 'posname'.  If 'a'
*      option selected members go after 'posname'.  If no options, members
*      are moved to end of archive.
*/
move(argv)
       char **argv;
{
       extern char *posarg, *posname;  /* positioning file names */
       CF cf;
       off_t size, tsize;
       int afd, curfd, mods, tfd1, tfd2, tfd3;
       char *file;

       afd = open_archive(O_RDWR);
       mods = options & (AR_A|AR_B);

       tfd1 = tmp();                   /* Files before key file. */
       tfd2 = tmp();                   /* Files selected by user. */
       tfd3 = tmp();                   /* Files after key file. */

       /*
        * Break archive into three parts -- selected entries and entries
        * before and after the key entry.  If positioning before the key,
        * place the key at the beginning of the after key entries and if
        * positioning after the key, place the key at the end of the before
        * key entries.  Put it all back together at the end.
        */

       /* Read and write to an archive; pad on both. */
       SETCF(afd, archive, 0, tname, RPAD|WPAD);
       for (curfd = tfd1; get_arobj(afd);) {   
               if (*argv && (file = files(argv))) {
                       if (options & AR_V)
                               (void)printf("m - %s\n", file);
                       cf.wfd = tfd2;
                       put_arobj(&cf, (struct stat *)NULL);
                       continue;
               }
               if (mods && compare(posname)) {
                       mods = 0;
                       if (options & AR_B)
                               curfd = tfd3;
                       cf.wfd = curfd;
                       put_arobj(&cf, (struct stat *)NULL);
                       if (options & AR_A)
                               curfd = tfd3;
               } else {
                       cf.wfd = curfd;
                       put_arobj(&cf, (struct stat *)NULL);
               }
       }

       if (mods) {
               (void)fprintf(stderr, "ar: %s: archive member not found.\n",
                   posarg);
               close_archive(afd);
               return(1);
       }
       (void)lseek(afd, (off_t)SARMAG, SEEK_SET);

       SETCF(tfd1, tname, afd, archive, NOPAD);
       tsize = size = lseek(tfd1, (off_t)0, SEEK_CUR);
       (void)lseek(tfd1, (off_t)0, SEEK_SET);
       copy_ar(&cf, size);

       tsize += size = lseek(tfd2, (off_t)0, SEEK_CUR);
       (void)lseek(tfd2, (off_t)0, SEEK_SET);
       cf.rfd = tfd2;
       copy_ar(&cf, size);

       tsize += size = lseek(tfd3, (off_t)0, SEEK_CUR);
       (void)lseek(tfd3, (off_t)0, SEEK_SET);
       cf.rfd = tfd3;
       copy_ar(&cf, size);

       (void)ftruncate(afd, tsize + SARMAG);
       close_archive(afd);

       if (*argv) {
               orphans(argv);
               return(1);
       }
       return(0);
}