/* System-dependent calls for tar.
- Copyright (C) 2003, 2004, 2005, 2006, 2007,
- 2008, 2010 Free Software Foundation, Inc.
+ Copyright 2003-2008, 2010, 2013 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Public License for more details.
You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <system.h>
wait_for_grandchild (grandchild_pid);
}
+static void
+run_decompress_program (void)
+{
+ int i;
+ const char *p, *prog = NULL;
+
+ for (p = first_decompress_program (&i); p; p = next_decompress_program (&i))
+ {
+ if (prog)
+ {
+ WARNOPT (WARN_DECOMPRESS_PROGRAM,
+ (0, errno, _("cannot run %s"), prog));
+ WARNOPT (WARN_DECOMPRESS_PROGRAM,
+ (0, 0, _("trying %s"), p));
+ }
+ prog = p;
+ execlp (p, p, "-d", NULL);
+ }
+ if (!prog)
+ FATAL_ERROR ((0, 0, _("unable to run decompression program")));
+ exec_fatal (prog);
+}
+
/* Set ARCHIVE for uncompressing, then reading an archive. */
pid_t
sys_child_open_for_uncompress (void)
open_fatal (archive_name_array[0]);
xdup2 (archive, STDIN_FILENO);
priv_set_restore_linkdir ();
- execlp (use_compress_program_option, use_compress_program_option,
- "-d", (char *) 0);
- exec_fatal (use_compress_program_option);
+ run_decompress_program ();
}
/* We do need a grandchild tar. */
xdup2 (child_pipe[PREAD], STDIN_FILENO);
xclose (child_pipe[PWRITE]);
priv_set_restore_linkdir ();
- execlp (use_compress_program_option, use_compress_program_option,
- "-d", (char *) 0);
- exec_fatal (use_compress_program_option);
+ run_decompress_program ();
}
/* The child tar is still here! */
stat_to_env (file_name, typechar, st);
- argv[0] = "/bin/sh";
- argv[1] = "-c";
+ argv[0] = (char *) "/bin/sh";
+ argv[1] = (char *) "-c";
argv[2] = to_command_option;
argv[3] = NULL;
xclose (p[PREAD]);
- argv[0] = "/bin/sh";
- argv[1] = "-c";
+ argv[0] = (char *) "/bin/sh";
+ argv[1] = (char *) "-c";
argv[2] = (char *) info_script_option;
argv[3] = NULL;
setenv ("TAR_FORMAT",
archive_format_string (current_format == DEFAULT_FORMAT ?
archive_format : current_format), 1);
- argv[0] = "/bin/sh";
- argv[1] = "-c";
+ argv[0] = (char *) "/bin/sh";
+ argv[1] = (char *) "-c";
argv[2] = (char *) script_name;
argv[3] = NULL;