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freebsd/contrib/cpio/main.c
Peter Wemm e46b89dc93 Fix warning: return type of main' is not int'
1999-09-15 01:58:44 +00:00

534 lines
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C
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/* main.c - main program and argument processing for cpio.
Copyright (C) 1990, 1991, 1992 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 Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Written by Phil Nelson <phil@cs.wwu.edu>,
David MacKenzie <djm@gnu.ai.mit.edu>,
and John Oleynick <juo@klinzhai.rutgers.edu>. */
/* $FreeBSD$ */
#include <stdio.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#if (defined(BSD) && (BSD >= 199306))
#include <locale.h>
#endif
#include "filetypes.h"
#include "system.h"
#include "cpiohdr.h"
#include "dstring.h"
#include "extern.h"
#include "rmt.h"
struct option long_opts[] =
{
{"null", 0, 0, '0'},
{"append", 0, 0, 'A'},
{"block-size", 1, 0, 130},
{"create", 0, 0, 'o'},
{"dereference", 0, 0, 'L'},
{"dot", 0, 0, 'V'},
{"extract", 0, 0, 'i'},
{"file", 1, 0, 'F'},
{"force-local", 0, &f_force_local, 1},
{"format", 1, 0, 'H'},
{"help", 0, 0, 132},
{"io-size", 1, 0, 'C'},
{"link", 0, &link_flag, TRUE},
{"list", 0, &table_flag, TRUE},
{"make-directories", 0, &create_dir_flag, TRUE},
{"message", 1, 0, 'M'},
{"no-absolute-filenames", 0, 0, 136},
{"no-preserve-owner", 0, 0, 134},
{"nonmatching", 0, &copy_matching_files, FALSE},
{"numeric-uid-gid", 0, &numeric_uid, TRUE},
{"only-verify-crc", 0, 0, 139},
{"owner", 1, 0, 'R'},
{"pass-through", 0, 0, 'p'},
{"pattern-file", 1, 0, 'E'},
{"preserve-modification-time", 0, &retain_time_flag, TRUE},
{"rename", 0, &rename_flag, TRUE},
{"rename-batch-file", 1, 0, 137},
{"quiet", 0, 0, 138},
{"sparse", 0, 0, 135},
{"swap", 0, 0, 'b'},
{"swap-bytes", 0, 0, 's'},
{"swap-halfwords", 0, 0, 'S'},
{"reset-access-time", 0, &reset_time_flag, TRUE},
{"unconditional", 0, &unconditional_flag, TRUE},
{"verbose", 0, &verbose_flag, TRUE},
{"version", 0, 0, 131},
#ifdef DEBUG_CPIO
{"debug", 0, &debug_flag, TRUE},
#endif
{0, 0, 0, 0}
};
/* Print usage message and exit with error. */
void
usage (fp, status)
FILE *fp;
int status;
{
fprintf (fp, "\
Usage: %s {-o|--create} [-0acvABLV] [-C bytes] [-H format] [-M message]\n\
[-O [[user@]host:]archive] [-F [[user@]host:]archive]\n\
[--file=[[user@]host:]archive] [--format=format] [--message=message]\n\
[--null] [--reset-access-time] [--verbose] [--dot] [--append]\n\
[--block-size=blocks] [--dereference] [--io-size=bytes] [--quiet]\n\
[--force-local] [--help] [--version] < name-list [> archive]\n", program_name);
fprintf (fp, "\
%s {-i|--extract} [-bcdfmnrtsuvBSV] [-C bytes] [-E file] [-H format]\n\
[-M message] [-R [user][:.][group]] [-I [[user@]host:]archive]\n\
[-F [[user@]host:]archive] [--file=[[user@]host:]archive]\n\
[--make-directories] [--nonmatching] [--preserve-modification-time]\n\
[--numeric-uid-gid] [--rename] [--list] [--swap-bytes] [--swap] [--dot]\n\
[--unconditional] [--verbose] [--block-size=blocks] [--swap-halfwords]\n\
[--io-size=bytes] [--pattern-file=file] [--format=format]\n\
[--owner=[user][:.][group]] [--no-preserve-owner] [--message=message]\n\
[--force-local] [--no-absolute-filenames] [--sparse] [--only-verify-crc]\n\
[--quiet] [--help] [--version] [pattern...] [< archive]\n",
program_name);
fprintf (fp, "\
%s {-p|--pass-through} [-0adlmuvLV] [-R [user][:.][group]]\n\
[--null] [--reset-access-time] [--make-directories] [--link] [--quiet]\n\
[--preserve-modification-time] [--unconditional] [--verbose] [--dot]\n\
[--dereference] [--owner=[user][:.][group]] [--no-preserve-owner]\n\
[--sparse] [--help] [--version] destination-directory < name-list\n", program_name);
exit (status);
}
/* Process the arguments. Set all options and set up the copy pass
directory or the copy in patterns. */
void
process_args (argc, argv)
int argc;
char *argv[];
{
extern char *version_string;
void (*copy_in) (); /* Work around for pcc bug. */
void (*copy_out) ();
int c;
char *input_archive_name = 0;
char *output_archive_name = 0;
if (argc < 2)
usage (stderr, 2);
xstat = lstat;
while ((c = getopt_long (argc, argv,
"0aAbBcC:dfE:F:H:iI:lLmM:noO:prR:sStuvVz",
long_opts, (int *) 0)) != -1)
{
switch (c)
{
case 0: /* A long option that just sets a flag. */
break;
case '0': /* Read null-terminated filenames. */
name_end = '\0';
break;
case 'a': /* Reset access times. */
reset_time_flag = TRUE;
break;
case 'A': /* Append to the archive. */
append_flag = TRUE;
break;
case 'b': /* Swap bytes and halfwords. */
swap_bytes_flag = TRUE;
swap_halfwords_flag = TRUE;
break;
case 'B': /* Set block size to 5120. */
io_block_size = 5120;
break;
case 130: /* --block-size */
io_block_size = atoi (optarg);
if (io_block_size < 1)
error (2, 0, "invalid block size");
io_block_size *= 512;
break;
case 'c': /* Use the old portable ASCII format. */
if (archive_format != arf_unknown)
usage (stderr, 2);
#ifdef SVR4_COMPAT
archive_format = arf_newascii; /* -H newc. */
#else
archive_format = arf_oldascii; /* -H odc. */
#endif
break;
case 'C': /* Block size. */
io_block_size = atoi (optarg);
if (io_block_size < 1)
error (2, 0, "invalid block size");
break;
case 'd': /* Create directories where needed. */
create_dir_flag = TRUE;
break;
case 'f': /* Only copy files not matching patterns. */
copy_matching_files = FALSE;
break;
case 'E': /* Pattern file name. */
pattern_file_name = optarg;
break;
case 'F': /* Archive file name. */
archive_name = optarg;
break;
case 'H': /* Header format name. */
if (archive_format != arf_unknown)
usage (stderr, 2);
if (!strcmp (optarg, "crc") || !strcmp (optarg, "CRC"))
archive_format = arf_crcascii;
else if (!strcmp (optarg, "newc") || !strcmp (optarg, "NEWC"))
archive_format = arf_newascii;
else if (!strcmp (optarg, "odc") || !strcmp (optarg, "ODC"))
archive_format = arf_oldascii;
else if (!strcmp (optarg, "bin") || !strcmp (optarg, "BIN"))
archive_format = arf_binary;
else if (!strcmp (optarg, "ustar") || !strcmp (optarg, "USTAR"))
archive_format = arf_ustar;
else if (!strcmp (optarg, "tar") || !strcmp (optarg, "TAR"))
archive_format = arf_tar;
else if (!strcmp (optarg, "hpodc") || !strcmp (optarg, "HPODC"))
archive_format = arf_hpoldascii;
else if (!strcmp (optarg, "hpbin") || !strcmp (optarg, "HPBIN"))
archive_format = arf_hpbinary;
else
error (2, 0, "\
invalid archive format `%s'; valid formats are:\n\
crc newc odc bin ustar tar (all-caps also recognized)", optarg);
break;
case 'i': /* Copy-in mode. */
if (copy_function != 0)
usage (stderr, 2);
copy_function = process_copy_in;
break;
case 'I': /* Input archive file name. */
input_archive_name = optarg;
break;
case 'k': /* Handle corrupted archives. We always handle
corrupted archives, but recognize this
option for compatability. */
break;
case 'l': /* Link files when possible. */
link_flag = TRUE;
break;
case 'L': /* Dereference symbolic links. */
xstat = stat;
break;
case 'm': /* Retain previous file modify times. */
retain_time_flag = TRUE;
break;
case 'M': /* New media message. */
set_new_media_message (optarg);
break;
case 'n': /* Long list owner and group as numbers. */
numeric_uid = TRUE;
break;
case 136: /* --no-absolute-filenames */
no_abs_paths_flag = TRUE;
break;
case 134: /* --no-preserve-owner */
if (set_owner_flag || set_group_flag)
usage (stderr, 2);
no_chown_flag = TRUE;
break;
case 'o': /* Copy-out mode. */
if (copy_function != 0)
usage (stderr, 2);
copy_function = process_copy_out;
break;
case 'O': /* Output archive file name. */
output_archive_name = optarg;
break;
case 139:
only_verify_crc_flag = TRUE;
break;
case 'p': /* Copy-pass mode. */
if (copy_function != 0)
usage (stderr, 2);
copy_function = process_copy_pass;
break;
case 'r': /* Interactively rename. */
rename_flag = TRUE;
break;
case 137:
rename_batch_file = optarg;
break;
case 138:
quiet_flag = TRUE;
break;
case 'R': /* Set the owner. */
if (no_chown_flag)
usage (stderr, 2);
#ifndef __MSDOS__
{
char *e, *u, *g;
e = parse_user_spec (optarg, &set_owner, &set_group, &u, &g);
if (e)
error (2, 0, "%s: %s", optarg, e);
if (u)
{
free (u);
set_owner_flag = TRUE;
}
if (g)
{
free (g);
set_group_flag = TRUE;
}
}
#endif
break;
case 's': /* Swap bytes. */
swap_bytes_flag = TRUE;
break;
case 'S': /* Swap halfwords. */
swap_halfwords_flag = TRUE;
break;
case 't': /* Only print a list. */
table_flag = TRUE;
break;
case 'u': /* Replace all! Unconditionally! */
unconditional_flag = TRUE;
break;
case 'v': /* Verbose! */
verbose_flag = TRUE;
break;
case 'V': /* Print `.' for each file. */
dot_flag = TRUE;
break;
case 131:
printf ("GNU cpio %s", version_string);
exit (0);
break;
case 135:
sparse_flag = TRUE;
break;
case 132: /* --help */
usage (stdout, 0);
break;
default:
usage (stderr, 2);
}
}
/* Do error checking and look at other args. */
if (copy_function == 0)
{
if (table_flag)
copy_function = process_copy_in;
else
usage (stderr, 2);
}
if ((!table_flag || !verbose_flag) && numeric_uid)
usage (stderr, 2);
/* Work around for pcc bug. */
copy_in = process_copy_in;
copy_out = process_copy_out;
if (copy_function == copy_in)
{
archive_des = 0;
if (link_flag || reset_time_flag || xstat != lstat || append_flag
|| sparse_flag
|| output_archive_name
|| (archive_name && input_archive_name))
usage (stderr, 2);
if (archive_format == arf_crcascii)
crc_i_flag = TRUE;
num_patterns = argc - optind;
save_patterns = &argv[optind];
if (input_archive_name)
archive_name = input_archive_name;
}
else if (copy_function == copy_out)
{
archive_des = 1;
if (argc != optind || create_dir_flag || rename_flag
|| table_flag || unconditional_flag || link_flag
|| retain_time_flag || no_chown_flag || set_owner_flag
|| set_group_flag || swap_bytes_flag || swap_halfwords_flag
|| (append_flag && !(archive_name || output_archive_name))
|| rename_batch_file || no_abs_paths_flag
|| input_archive_name || (archive_name && output_archive_name))
usage (stderr, 2);
if (archive_format == arf_unknown)
archive_format = arf_binary;
if (output_archive_name)
archive_name = output_archive_name;
}
else
{
/* Copy pass. */
archive_des = -1;
if (argc - 1 != optind || archive_format != arf_unknown
|| swap_bytes_flag || swap_halfwords_flag
|| table_flag || rename_flag || append_flag
|| rename_batch_file || no_abs_paths_flag)
usage (stderr, 2);
directory_name = argv[optind];
}
if (archive_name)
{
if (copy_function != copy_in && copy_function != copy_out)
usage (stderr, 2);
archive_des = open_archive (archive_name);
if (archive_des < 0)
error (1, errno, "%s", archive_name);
}
#ifndef __MSDOS__
/* Prevent SysV non-root users from giving away files inadvertantly.
This happens automatically on BSD, where only root can give
away files. */
if (set_owner_flag == FALSE && set_group_flag == FALSE && geteuid ())
no_chown_flag = TRUE;
#endif
}
/* Initialize the input and output buffers to their proper size and
initialize all variables associated with the input and output
buffers. */
void
initialize_buffers ()
{
int in_buf_size, out_buf_size;
if (copy_function == process_copy_in)
{
/* Make sure the input buffer can always hold 2 blocks and that it
is big enough to hold 1 tar record (512 bytes) even if it
is not aligned on a block boundary. The extra buffer space
is needed by process_copyin and peek_in_buf to automatically
figure out what kind of archive it is reading. */
if (io_block_size >= 512)
in_buf_size = 2 * io_block_size;
else
in_buf_size = 1024;
out_buf_size = DISK_IO_BLOCK_SIZE;
}
else if (copy_function == process_copy_out)
{
in_buf_size = DISK_IO_BLOCK_SIZE;
out_buf_size = io_block_size;
}
else
{
in_buf_size = DISK_IO_BLOCK_SIZE;
out_buf_size = DISK_IO_BLOCK_SIZE;
}
input_buffer = (char *) xmalloc (in_buf_size);
in_buff = input_buffer;
input_buffer_size = in_buf_size;
input_size = 0;
input_bytes = 0;
output_buffer = (char *) xmalloc (out_buf_size);
out_buff = output_buffer;
output_size = 0;
output_bytes = 0;
/* Clear the block of zeros. */
bzero (zeros_512, 512);
}
int
main (argc, argv)
int argc;
char *argv[];
{
program_name = argv[0];
#if (defined(BSD) && (BSD >= 199306))
(void) setlocale (LC_ALL, "");
#endif
#ifdef __TURBOC__
_fmode = O_BINARY; /* Put stdin and stdout in binary mode. */
#endif
#ifdef __EMX__ /* gcc on OS/2. */
_response (&argc, &argv);
_wildcard (&argc, &argv);
#endif
process_args (argc, argv);
umask (0);
initialize_buffers ();
(*copy_function) ();
if (archive_des >= 0 && rmtclose (archive_des) == -1)
error (1, errno, "error closing archive");
exit (0);
}
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