File: [cvs.NetBSD.org] / src / bin / pax / options.c (download)
Revision 1.72, Fri Feb 6 18:59:14 2004 UTC (20 years, 2 months ago) by christos
Branch: MAIN
Changes since 1.71: +3 -3
lines
recognize -k [--keep-old-files] short option. From hubertf.
|
/* $NetBSD: options.c,v 1.72 2004/02/06 18:59:14 christos Exp $ */
/*-
* Copyright (c) 1992 Keith Muller.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Keith Muller of the University of California, San Diego.
*
* 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. 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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if !defined(lint)
#if 0
static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 4/18/94";
#else
__RCSID("$NetBSD: options.c,v 1.72 2004/02/06 18:59:14 christos Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/mtio.h>
#include <sys/param.h>
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <paths.h>
#include "pax.h"
#include "options.h"
#include "cpio.h"
#include "tar.h"
#include "extern.h"
#ifndef SMALL
#include "mtree.h"
#endif /* SMALL */
/*
* Routines which handle command line options
*/
static int nopids; /* tar mode: suppress "pids" for -p option */
static char *flgch = FLGCH; /* list of all possible flags (pax) */
static OPLIST *ophead = NULL; /* head for format specific options -x */
static OPLIST *optail = NULL; /* option tail */
static int no_op(void);
static void printflg(unsigned int);
static int c_frmt(const void *, const void *);
static off_t str_offt(char *);
static char *getline(FILE *fp);
static void pax_options(int, char **);
static void pax_usage(void);
static void tar_options(int, char **);
static void tar_usage(void);
static void cpio_options(int, char **);
static void cpio_usage(void);
/* errors from getline */
#define GETLINE_FILE_CORRUPT 1
#define GETLINE_OUT_OF_MEM 2
static int getline_error;
#define BZIP2_CMD "bzip2" /* command to run as bzip2 */
#define GZIP_CMD "gzip" /* command to run as gzip */
#define COMPRESS_CMD "compress" /* command to run as compress */
/*
* Long options.
*/
#define OPT_USE_COMPRESS_PROGRAM 0
#define OPT_CHECKPOINT 1
#define OPT_UNLINK 2
#define OPT_HELP 3
#define OPT_ATIME_PRESERVE 4
#define OPT_IGNORE_FAILED_READ 5
#define OPT_REMOVE_FILES 6
#define OPT_NULL 7
#define OPT_TOTALS 8
#define OPT_VERSION 9
#define OPT_EXCLUDE 10
#define OPT_BLOCK_COMPRESS 11
#define OPT_NORECURSE 12
#define OPT_FORCE_LOCAL 13
#define OPT_INSECURE 14
#define OPT_STRICT 15
/*
* Format specific routine table - MUST BE IN SORTED ORDER BY NAME
* (see pax.h for description of each function)
*
* name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read,
* read, end_read, st_write, write, end_write, trail,
* rd_data, wr_data, options
*/
FSUB fsub[] = {
/* 0: OLD BINARY CPIO */
{ "bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd,
bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, NULL,
cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt },
/* 1: OLD OCTAL CHARACTER CPIO */
{ "cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd,
cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, NULL,
cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt },
/* 2: SVR4 HEX CPIO */
{ "sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd,
vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, NULL,
cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt },
/* 3: SVR4 HEX CPIO WITH CRC */
{ "sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd,
vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, NULL,
cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt },
/* 4: OLD TAR */
{ "tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op,
tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail,
NULL, rd_wrfile, wr_rdfile, tar_opt },
/* 5: POSIX USTAR */
{ "ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd,
ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail,
NULL, rd_wrfile, wr_rdfile, bad_opt }
};
#define F_BCPIO 0 /* old binary cpio format */
#define F_CPIO 1 /* old octal character cpio format */
#define F_SV4CPIO 2 /* SVR4 hex cpio format */
#define F_SV4CRC 3 /* SVR4 hex with crc cpio format */
#define F_TAR 4 /* old V7 UNIX tar format */
#define F_USTAR 5 /* ustar format */
#define DEFLT F_USTAR /* default write format from list above */
/*
* ford is the archive search order used by get_arc() to determine what kind
* of archive we are dealing with. This helps to properly id archive formats
* some formats may be subsets of others....
*/
int ford[] = {F_USTAR, F_TAR, F_SV4CRC, F_SV4CPIO, F_CPIO, F_BCPIO, -1};
/*
* options()
* figure out if we are pax, tar or cpio. Call the appropriate options
* parser
*/
void
options(int argc, char **argv)
{
/*
* Are we acting like pax, tar or cpio (based on argv[0])
*/
if ((argv0 = strrchr(argv[0], '/')) != NULL)
argv0++;
else
argv0 = argv[0];
if (strcmp(NM_TAR, argv0) == 0)
tar_options(argc, argv);
else if (strcmp(NM_CPIO, argv0) == 0)
cpio_options(argc, argv);
else {
argv0 = NM_PAX;
pax_options(argc, argv);
}
}
struct option pax_longopts[] = {
{ "insecure", no_argument, 0,
OPT_INSECURE },
{ "force-local", no_argument, 0,
OPT_FORCE_LOCAL },
};
/*
* pax_options()
* look at the user specified flags. set globals as required and check if
* the user specified a legal set of flags. If not, complain and exit
*/
static void
pax_options(int argc, char **argv)
{
int c;
int i;
unsigned int flg = 0;
unsigned int bflg = 0;
char *pt;
FSUB tmp;
/*
* process option flags
*/
while ((c = getopt_long(argc, argv,
"ab:cdf:ijklno:p:rs:tuvwx:zAB:DE:G:HLMN:OPT:U:XYZ",
pax_longopts, NULL)) != -1) {
switch (c) {
case 'a':
/*
* append
*/
flg |= AF;
break;
case 'b':
/*
* specify blocksize
*/
flg |= BF;
if ((wrblksz = (int)str_offt(optarg)) <= 0) {
tty_warn(1, "Invalid block size %s", optarg);
pax_usage();
}
break;
case 'c':
/*
* inverse match on patterns
*/
cflag = 1;
flg |= CF;
break;
case 'd':
/*
* match only dir on extract, not the subtree at dir
*/
dflag = 1;
flg |= DF;
break;
case 'f':
/*
* filename where the archive is stored
*/
arcname = optarg;
flg |= FF;
break;
case 'i':
/*
* interactive file rename
*/
iflag = 1;
flg |= IF;
break;
case 'j':
/*
* pass through bzip2
*/
jflag = 1;
gzip_program = BZIP2_CMD;
break;
case 'k':
/*
* do not clobber files that exist
*/
kflag = 1;
flg |= KF;
break;
case 'l':
/*
* try to link src to dest with copy (-rw)
*/
lflag = 1;
flg |= LF;
break;
case 'n':
/*
* select first match for a pattern only
*/
nflag = 1;
flg |= NF;
break;
case 'o':
/*
* pass format specific options
*/
flg |= OF;
if (opt_add(optarg) < 0)
pax_usage();
break;
case 'p':
/*
* specify file characteristic options
*/
for (pt = optarg; *pt != '\0'; ++pt) {
switch(*pt) {
case 'a':
/*
* do not preserve access time
*/
patime = 0;
break;
case 'e':
/*
* preserve user id, group id, file
* mode, access/modification times
* and file flags.
*/
pids = 1;
pmode = 1;
patime = 1;
pmtime = 1;
pfflags = 1;
break;
#if 0
case 'f':
/*
* do not preserve file flags
*/
pfflags = 0;
break;
#endif
case 'm':
/*
* do not preserve modification time
*/
pmtime = 0;
break;
case 'o':
/*
* preserve uid/gid
*/
pids = 1;
break;
case 'p':
/*
* preserve file mode bits
*/
pmode = 1;
break;
default:
tty_warn(1, "Invalid -p string: %c",
*pt);
pax_usage();
break;
}
}
flg |= PF;
break;
case 'r':
/*
* read the archive
*/
flg |= RF;
break;
case 's':
/*
* file name substitution name pattern
*/
if (rep_add(optarg) < 0) {
pax_usage();
break;
}
flg |= SF;
break;
case 't':
/*
* preserve access time on filesystem nodes we read
*/
tflag = 1;
flg |= TF;
break;
case 'u':
/*
* ignore those older files
*/
uflag = 1;
flg |= UF;
break;
case 'v':
/*
* verbose operation mode
*/
vflag = 1;
flg |= VF;
break;
case 'w':
/*
* write an archive
*/
flg |= WF;
break;
case 'x':
/*
* specify an archive format on write
*/
tmp.name = optarg;
frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt);
if (frmt != NULL) {
flg |= XF;
break;
}
tty_warn(1, "Unknown -x format: %s", optarg);
(void)fputs("pax: Known -x formats are:", stderr);
for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
(void)fprintf(stderr, " %s", fsub[i].name);
(void)fputs("\n\n", stderr);
pax_usage();
break;
case 'z':
/*
* use gzip. Non standard option.
*/
gzip_program = GZIP_CMD;
break;
case 'A':
Aflag = 1;
flg |= CAF;
break;
case 'B':
/*
* non-standard option on number of bytes written on a
* single archive volume.
*/
if ((wrlimit = str_offt(optarg)) <= 0) {
tty_warn(1, "Invalid write limit %s", optarg);
pax_usage();
}
if (wrlimit % BLKMULT) {
tty_warn(1,
"Write limit is not a %d byte multiple",
BLKMULT);
pax_usage();
}
flg |= CBF;
break;
case 'D':
/*
* On extraction check file inode change time before the
* modification of the file name. Non standard option.
*/
Dflag = 1;
flg |= CDF;
break;
case 'E':
/*
* non-standard limit on read faults
* 0 indicates stop after first error, values
* indicate a limit, "NONE" try forever
*/
flg |= CEF;
if (strcmp(NONE, optarg) == 0)
maxflt = -1;
else if ((maxflt = atoi(optarg)) < 0) {
tty_warn(1,
"Error count value must be positive");
pax_usage();
}
break;
case 'G':
/*
* non-standard option for selecting files within an
* archive by group (gid or name)
*/
if (grp_add(optarg) < 0) {
pax_usage();
break;
}
flg |= CGF;
break;
case 'H':
/*
* follow command line symlinks only
*/
Hflag = 1;
flg |= CHF;
break;
case 'L':
/*
* follow symlinks
*/
Lflag = 1;
flg |= CLF;
break;
#ifdef SMALL
case 'M':
case 'N':
tty_warn(1, "Support for -%c is not compiled in", c);
exit(1);
#else /* !SMALL */
case 'M':
/*
* Treat list of filenames on stdin as an
* mtree(8) specfile. Non standard option.
*/
Mflag = 1;
flg |= CMF;
break;
case 'N':
/*
* Use alternative directory for user db lookups.
*/
if (!setup_getid(optarg)) {
tty_warn(1,
"Unable to use user and group databases in `%s'",
optarg);
pax_usage();
}
break;
#endif /* !SMALL */
case 'O':
/*
* Force one volume. Non standard option.
*/
force_one_volume = 1;
break;
case 'P':
/*
* do NOT follow symlinks (default)
*/
Lflag = 0;
flg |= CPF;
break;
case 'T':
/*
* non-standard option for selecting files within an
* archive by modification time range (lower,upper)
*/
if (trng_add(optarg) < 0) {
pax_usage();
break;
}
flg |= CTF;
break;
case 'U':
/*
* non-standard option for selecting files within an
* archive by user (uid or name)
*/
if (usr_add(optarg) < 0) {
pax_usage();
break;
}
flg |= CUF;
break;
case 'X':
/*
* do not pass over mount points in the file system
*/
Xflag = 1;
flg |= CXF;
break;
case 'Y':
/*
* On extraction check file inode change time after the
* modification of the file name. Non standard option.
*/
Yflag = 1;
flg |= CYF;
break;
case 'Z':
/*
* On extraction check modification time after the
* modification of the file name. Non standard option.
*/
Zflag = 1;
flg |= CZF;
break;
case OPT_INSECURE:
secure = 0;
break;
case OPT_FORCE_LOCAL:
forcelocal = 0;
break;
case '?':
default:
pax_usage();
break;
}
}
/*
* figure out the operation mode of pax read,write,extract,copy,append
* or list. check that we have not been given a bogus set of flags
* for the operation mode.
*/
if (ISLIST(flg)) {
act = LIST;
listf = stdout;
bflg = flg & BDLIST;
} else if (ISEXTRACT(flg)) {
act = EXTRACT;
bflg = flg & BDEXTR;
} else if (ISARCHIVE(flg)) {
act = ARCHIVE;
bflg = flg & BDARCH;
} else if (ISAPPND(flg)) {
act = APPND;
bflg = flg & BDARCH;
} else if (ISCOPY(flg)) {
act = COPY;
bflg = flg & BDCOPY;
} else
pax_usage();
if (bflg) {
printflg(flg);
pax_usage();
}
/*
* if we are writing (ARCHIVE) we use the default format if the user
* did not specify a format. when we write during an APPEND, we will
* adopt the format of the existing archive if none was supplied.
*/
if (!(flg & XF) && (act == ARCHIVE))
frmt = &(fsub[DEFLT]);
/*
* process the args as they are interpreted by the operation mode
*/
switch (act) {
case LIST:
case EXTRACT:
for (; optind < argc; optind++)
if (pat_add(argv[optind], NULL) < 0)
pax_usage();
break;
case COPY:
if (optind >= argc) {
tty_warn(0, "Destination directory was not supplied");
pax_usage();
}
--argc;
dirptr = argv[argc];
if (mkpath(dirptr) < 0)
pax_usage();
/* FALLTHROUGH */
case ARCHIVE:
case APPND:
for (; optind < argc; optind++)
if (ftree_add(argv[optind], 0) < 0)
pax_usage();
/*
* no read errors allowed on updates/append operation!
*/
maxflt = 0;
break;
}
}
/*
* tar_options()
* look at the user specified flags. set globals as required and check if
* the user specified a legal set of flags. If not, complain and exit
*/
struct option tar_longopts[] = {
{ "block-size", required_argument, 0, 'b' },
{ "bunzip2", no_argument, 0, 'j' },
{ "bzip2", no_argument, 0, 'j' },
{ "create", no_argument, 0, 'c' }, /* F */
/* -e -- no corresponding long option */
{ "file", required_argument, 0, 'f' },
{ "dereference", no_argument, 0, 'h' },
{ "keep-old-files", no_argument, 0, 'k' },
{ "one-file-system", no_argument, 0, 'l' },
{ "modification-time", no_argument, 0, 'm' },
{ "old-archive", no_argument, 0, 'o' },
{ "portability", no_argument, 0, 'o' },
{ "same-permissions", no_argument, 0, 'p' },
{ "preserve-permissions", no_argument, 0, 'p' },
{ "preserve", no_argument, 0, 'p' },
{ "fast-read", no_argument, 0, 'q' },
{ "append", no_argument, 0, 'r' }, /* F */
{ "update", no_argument, 0, 'u' }, /* F */
{ "list", no_argument, 0, 't' }, /* F */
{ "verbose", no_argument, 0, 'v' },
{ "interactive", no_argument, 0, 'w' },
{ "confirmation", no_argument, 0, 'w' },
{ "extract", no_argument, 0, 'x' }, /* F */
{ "get", no_argument, 0, 'x' }, /* F */
{ "gzip", no_argument, 0, 'z' },
{ "gunzip", no_argument, 0, 'z' },
{ "read-full-blocks", no_argument, 0, 'B' },
{ "directory", required_argument, 0, 'C' },
{ "to-stdout", no_argument, 0, 'O' },
{ "absolute-paths", no_argument, 0, 'P' },
{ "files-from", required_argument, 0, 'T' },
{ "exclude-from", required_argument, 0, 'X' },
{ "compress", no_argument, 0, 'Z' },
{ "uncompress", no_argument, 0, 'Z' },
{ "strict", no_argument, 0,
OPT_STRICT },
{ "atime-preserve", no_argument, 0,
OPT_ATIME_PRESERVE },
{ "unlink", no_argument, 0,
OPT_UNLINK },
{ "use-compress-program", required_argument, 0,
OPT_USE_COMPRESS_PROGRAM },
{ "force-local", no_argument, 0,
OPT_FORCE_LOCAL },
{ "insecure", no_argument, 0,
OPT_INSECURE },
{ "exclude", required_argument, 0,
OPT_EXCLUDE },
#if 0 /* Not implemented */
{ "catenate", no_argument, 0, 'A' }, /* F */
{ "concatenate", no_argument, 0, 'A' }, /* F */
{ "diff", no_argument, 0, 'd' }, /* F */
{ "compare", no_argument, 0, 'd' }, /* F */
{ "checkpoint", no_argument, 0,
OPT_CHECKPOINT },
{ "help", no_argument, 0,
OPT_HELP },
{ "info-script", required_argument, 0, 'F' },
{ "new-volume-script", required_argument, 0, 'F' },
{ "incremental", no_argument, 0, 'G' },
{ "listed-incremental", required_argument, 0, 'g' },
{ "ignore-zeros", no_argument, 0, 'i' },
{ "ignore-failed-read", no_argument, 0,
OPT_IGNORE_FAILED_READ },
{ "starting-file", no_argument, 0, 'K' },
{ "tape-length", required_argument, 0, 'L' },
{ "multi-volume", no_argument, 0, 'M' },
{ "after-date", required_argument, 0, 'N' },
{ "newer", required_argument, 0, 'N' },
{ "record-number", no_argument, 0, 'R' },
{ "remove-files", no_argument, 0,
OPT_REMOVE_FILES },
{ "same-order", no_argument, 0, 's' },
{ "preserve-order", no_argument, 0, 's' },
{ "sparse", no_argument, 0, 'S' },
{ "null", no_argument, 0,
OPT_NULL },
{ "totals", no_argument, 0,
OPT_TOTALS },
{ "volume-name", required_argument, 0, 'V' },
{ "label", required_argument, 0, 'V' },
{ "version", no_argument, 0,
OPT_VERSION },
{ "verify", no_argument, 0, 'W' },
{ "block-compress", no_argument, 0,
OPT_BLOCK_COMPRESS },
{ "norecurse", no_argument, 0,
OPT_NORECURSE },
#endif
{ 0, 0, 0, 0 },
};
static void
tar_options(int argc, char **argv)
{
int c;
int fstdin = 0;
int Oflag = 0;
int nincfiles = 0;
int incfiles_max = 0;
struct incfile {
char *file;
char *dir;
};
struct incfile *incfiles = NULL;
/*
* Set default values.
*/
rmleadslash = 1;
is_gnutar = 1;
/*
* process option flags
*/
while ((c = getoldopt(argc, argv,
"+b:cef:hjklmopqrstuvwxzBC:HI:OPT:X:Z014578",
tar_longopts, NULL))
!= -1) {
switch(c) {
case 'b':
/*
* specify blocksize in 512-byte blocks
*/
if ((wrblksz = (int)str_offt(optarg)) <= 0) {
tty_warn(1, "Invalid block size %s", optarg);
tar_usage();
}
wrblksz *= 512; /* XXX - check for int oflow */
break;
case 'c':
/*
* create an archive
*/
act = ARCHIVE;
break;
case 'e':
/*
* stop after first error
*/
maxflt = 0;
break;
case 'f':
/*
* filename where the archive is stored
*/
if ((optarg[0] == '-') && (optarg[1]== '\0')) {
/*
* treat a - as stdin
*/
fstdin = 1;
arcname = NULL;
break;
}
fstdin = 0;
arcname = optarg;
break;
case 'h':
/*
* follow symlinks
*/
Lflag = 1;
break;
case 'j':
/*
* pass through bzip2. not a standard option
*/
jflag = 1;
gzip_program = BZIP2_CMD;
break;
case 'k':
/*
* do not clobber files that exist
*/
kflag = 1;
break;
case 'l':
/*
* do not pass over mount points in the file system
*/
Xflag = 1;
break;
case 'm':
/*
* do not preserve modification time
*/
pmtime = 0;
break;
case 'o':
/*
* This option does several things based on whether
* this is a create or extract operation.
*/
if (act == ARCHIVE) {
/* GNU tar: write V7 format archives. */
Oflag = 1;
/* 4.2BSD: don't add directory entries. */
if (opt_add("write_opt=nodir") < 0)
tar_usage();
} else {
/* SUS: don't preserve owner/group. */
pids = 0;
nopids = 1;
}
break;
case 'O':
Oflag = 1;
break;
case 'p':
/*
* preserve user id, group id, file
* mode, access/modification times
*/
if (!nopids)
pids = 1;
pmode = 1;
patime = 1;
pmtime = 1;
break;
case 'q':
/*
* select first match for a pattern only
*/
nflag = 1;
break;
case 'r':
case 'u':
/*
* append to the archive
*/
act = APPND;
break;
case 's':
/*
* file name substitution name pattern
*/
if (rep_add(optarg) < 0) {
tar_usage();
break;
}
break;
case 't':
/*
* list contents of the tape
*/
act = LIST;
break;
case 'v':
/*
* verbose operation mode
*/
vflag = 1;
break;
case 'w':
/*
* interactive file rename
*/
iflag = 1;
break;
case 'x':
/*
* extract an archive, preserving mode,
* and mtime if possible.
*/
act = EXTRACT;
pmtime = 1;
break;
case 'z':
/*
* use gzip. Non standard option.
*/
zflag = 1;
gzip_program = GZIP_CMD;
break;
case 'B':
/*
* Nothing to do here, this is pax default
*/
break;
case 'C':
chdname = optarg;
break;
case 'H':
/*
* follow command line symlinks only
*/
Hflag = 1;
break;
case 'I':
case 'T':
if (++nincfiles > incfiles_max) {
incfiles_max = nincfiles + 3;
incfiles = realloc(incfiles,
sizeof(*incfiles) * incfiles_max);
if (incfiles == NULL) {
tty_warn(0, "Unable to allocate space "
"for option list");
exit(1);
}
}
incfiles[nincfiles - 1].file = optarg;
incfiles[nincfiles - 1].dir = chdname;
break;
case 'P':
/*
* do not remove leading '/' from pathnames
*/
rmleadslash = 0;
Aflag = 1;
break;
case 'X':
/*
* GNU tar compat: exclude the files listed in optarg
*/
if (tar_gnutar_X_compat(optarg) != 0)
tar_usage();
break;
case 'Z':
/*
* use compress.
*/
zflag = 1;
gzip_program = COMPRESS_CMD;
break;
case '0':
arcname = DEV_0;
break;
case '1':
arcname = DEV_1;
break;
case '4':
arcname = DEV_4;
break;
case '5':
arcname = DEV_5;
break;
case '7':
arcname = DEV_7;
break;
case '8':
arcname = DEV_8;
break;
case OPT_ATIME_PRESERVE:
patime = 1;
break;
case OPT_UNLINK:
/* Just ignore -- we always unlink first. */
break;
case OPT_USE_COMPRESS_PROGRAM:
zflag = 1;
gzip_program = optarg;
break;
case OPT_FORCE_LOCAL:
forcelocal = 1;
break;
case OPT_INSECURE:
secure = 0;
break;
case OPT_STRICT:
/* disable gnu extensions */
is_gnutar = 0;
break;
case OPT_EXCLUDE:
if (tar_gnutar_minus_minus_exclude(optarg) != 0)
tar_usage();
break;
default:
tar_usage();
break;
}
}
argc -= optind;
argv += optind;
/* Tar requires an action. */
if (act == ERROR)
tar_usage();
/* Traditional tar behaviour (pax uses stderr unless in list mode) */
if (fstdin == 1 && act == ARCHIVE)
listf = stderr;
else
listf = stdout;
/* Traditional tar behaviour (pax wants to read file list from stdin) */
if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0)
exit(0);
/*
* if we are writing (ARCHIVE) specify tar, otherwise run like pax
* (unless -o specified)
*/
if (act == ARCHIVE || act == APPND)
frmt = &(fsub[Oflag ? F_TAR : F_USTAR]);
else if (Oflag) {
if (act == EXTRACT)
to_stdout = 1;
else {
tty_warn(1, "The -O/-o options are only valid when "
"writing or extracting an archive");
tar_usage();
}
}
/*
* process the args as they are interpreted by the operation mode
*/
switch (act) {
case LIST:
case EXTRACT:
default:
{
int sawpat = 0;
int dirisnext = 0;
char *file, *dir;
while (nincfiles || *argv != NULL) {
/*
* If we queued up any include files,
* pull them in now. Otherwise, check
* for -I and -C positional flags.
* Anything else must be a file to
* extract.
*/
if (nincfiles) {
file = incfiles->file;
dir = incfiles->dir;
incfiles++;
nincfiles--;
} else if (strcmp(*argv, "-I") == 0) {
if (*++argv == NULL)
break;
file = *argv++;
dir = chdname;
} else
file = NULL;
if (file != NULL) {
FILE *fp;
char *str;
if (strcmp(file, "-") == 0)
fp = stdin;
else if ((fp = fopen(file, "r")) == NULL) {
tty_warn(1, "Unable to open file '%s' for read", file);
tar_usage();
}
while ((str = getline(fp)) != NULL) {
if (dirisnext) {
dir = str;
dirisnext = 0;
continue;
}
if (strcmp(str, "-C") == 0) {
dirisnext = 1;
continue;
}
if (pat_add(str, dir) < 0)
tar_usage();
sawpat = 1;
}
/* Bomb if given -C w/out a dir. */
if (dirisnext)
tar_usage();
if (strcmp(file, "-") != 0)
fclose(fp);
if (getline_error) {
tty_warn(1, "Problem with file '%s'", file);
tar_usage();
}
} else if (strcmp(*argv, "-C") == 0) {
if (*++argv == NULL)
break;
chdname = *argv++;
} else if (pat_add(*argv++, chdname) < 0)
tar_usage();
else
sawpat = 1;
}
/*
* if patterns were added, we are doing chdir()
* on a file-by-file basis, else, just one
* global chdir (if any) after opening input.
*/
if (sawpat > 0)
chdname = NULL;
}
break;
case ARCHIVE:
case APPND:
if (chdname != NULL) { /* initial chdir() */
if (ftree_add(chdname, 1) < 0)
tar_usage();
}
while (nincfiles || *argv != NULL) {
char *file, *dir;
/*
* If we queued up any include files, pull them in
* now. Otherwise, check for -I and -C positional
* flags. Anything else must be a file to include
* in the archive.
*/
if (nincfiles) {
file = incfiles->file;
dir = incfiles->dir;
incfiles++;
nincfiles--;
} else if (strcmp(*argv, "-I") == 0) {
if (*++argv == NULL)
break;
file = *argv++;
dir = NULL;
} else
file = NULL;
if (file != NULL) {
FILE *fp;
char *str;
int dirisnext = 0;
/* Set directory if needed */
if (dir) {
if (ftree_add(dir, 1) < 0)
tar_usage();
}
if (strcmp(file, "-") == 0)
fp = stdin;
else if ((fp = fopen(file, "r")) == NULL) {
tty_warn(1, "Unable to open file '%s' for read", file);
tar_usage();
}
while ((str = getline(fp)) != NULL) {
if (dirisnext) {
if (ftree_add(str, 1) < 0)
tar_usage();
dirisnext = 0;
continue;
}
if (strcmp(str, "-C") == 0) {
dirisnext = 1;
continue;
}
if (ftree_add(str, 0) < 0)
tar_usage();
}
/* Bomb if given -C w/out a dir. */
if (dirisnext)
tar_usage();
if (strcmp(file, "-") != 0)
fclose(fp);
if (getline_error) {
tty_warn(1, "Problem with file '%s'",
file);
tar_usage();
}
} else if (strcmp(*argv, "-C") == 0) {
if (*++argv == NULL)
break;
if (ftree_add(*argv++, 1) < 0)
tar_usage();
} else if (ftree_add(*argv++, 0) < 0)
tar_usage();
}
/*
* no read errors allowed on updates/append operation!
*/
maxflt = 0;
break;
}
if (!fstdin && ((arcname == (char *)NULL) || (*arcname == '\0'))) {
arcname = getenv("TAPE");
if ((arcname == NULL) || (*arcname == '\0'))
arcname = _PATH_DEFTAPE;
}
}
int
mkpath(path)
char *path;
{
struct stat sb;
char *slash;
int done = 0;
slash = path;
while (!done) {
slash += strspn(slash, "/");
slash += strcspn(slash, "/");
done = (*slash == '\0');
*slash = '\0';
if (stat(path, &sb)) {
if (errno != ENOENT || mkdir(path, 0777)) {
tty_warn(1, "%s", path);
return (-1);
}
} else if (!S_ISDIR(sb.st_mode)) {
syswarn(1, ENOTDIR, "%s", path);
return (-1);
}
if (!done)
*slash = '/';
}
return (0);
}
struct option cpio_longopts[] = {
{ "reset-access-time", no_argument, 0, 'a' },
{ "make-directories", no_argument, 0, 'd' },
{ "nonmatching", no_argument, 0, 'f' },
{ "extract", no_argument, 0, 'i' },
{ "link", no_argument, 0, 'l' },
{ "preserve-modification-time", no_argument, 0, 'm' },
{ "create", no_argument, 0, 'o' },
{ "pass-through", no_argument, 0, 'p' },
{ "rename", no_argument, 0, 'r' },
{ "list", no_argument, 0, 't' },
{ "unconditional", no_argument, 0, 'u' },
{ "verbose", no_argument, 0, 'v' },
{ "append", no_argument, 0, 'A' },
{ "pattern-file", required_argument, 0, 'E' },
{ "file", required_argument, 0, 'F' },
{ "force-local", no_argument, 0,
OPT_FORCE_LOCAL },
{ "format", required_argument, 0, 'H' },
{ "dereference", no_argument, 0, 'L' },
{ "swap-halfwords", no_argument, 0, 'S' },
{ "insecure", no_argument, 0,
OPT_INSECURE },
#ifdef notyet
/* Not implemented */
{ "null", no_argument, 0, '0' },
{ "swap", no_argument, 0, 'b' },
{ "numeric-uid-gid", no_argument, 0, 'n' },
{ "swap-bytes", no_argument, 0, 's' },
{ "message", required_argument, 0, 'M' },
{ "owner", required_argument, 0 'R' },
{ "dot", no_argument, 0, 'V' },
{ "block-size", required_argument, 0,
OPT_BLOCK_SIZE },
{ "no-absolute-pathnames", no_argument, 0,
OPT_NO_ABSOLUTE_PATHNAMES },
{ "no-preserve-owner", no_argument, 0,
OPT_NO_PRESERVE_OWNER },
{ "only-verify-crc", no_argument, 0,
OPT_ONLY_VERIFY_CRC },
{ "rsh-command", required_argument, 0,
OPT_RSH_COMMAND },
{ "sparce", no_argument, 0,
OPT_SPARSE },
{ "version", no_argument, 0,
OPT_VERSION },
#endif
};
/*
* cpio_options()
* look at the user specified flags. set globals as required and check if
* the user specified a legal set of flags. If not, complain and exit
*/
static void
cpio_options(int argc, char **argv)
{
FSUB tmp;
unsigned int flg = 0;
unsigned int bflg = 0;
int c, i;
FILE *fp;
char *str;
uflag = 1;
kflag = 1;
pids = 1;
pmode = 1;
pmtime = 0;
arcname = NULL;
dflag = 1;
nodirs = 1;
/*
* process option flags
*/
while ((c = getoldopt(argc, argv,
"+abcdfiklmoprstuvzABC:E:F:H:I:LM:O:R:SVZ6",
cpio_longopts, NULL)) != -1) {
switch(c) {
case 'a':
/*
* preserve access time on filesystem nodes we read
*/
tflag = 1;
flg |= TF;
break;
#ifdef notyet
case 'b':
/*
* swap bytes and half-words when reading data
*/
break;
#endif
case 'c':
/*
* ASCII cpio header
*/
frmt = &fsub[F_SV4CPIO];
break;
case 'd':
/*
* create directories as needed
* pax does this by default ..
*/
nodirs = 0;
flg |= RF;
break;
case 'f':
/*
* inverse match on patterns
*/
cflag = 1;
flg |= CF;
break;
case 'i':
/*
* read the archive
*/
act = EXTRACT;
flg |= RF;
break;
#ifdef notyet
case 'k':
break;
#endif
case 'l':
/*
* try to link src to dest with copy (-rw)
*/
lflag = 1;
flg |= LF;
break;
case 'm':
/*
* preserve mtime
*/
flg |= PF;
pmtime = 1;
break;
case 'o':
/*
* write an archive
*/
act = ARCHIVE;
frmt = &(fsub[F_SV4CRC]);
flg |= WF;
break;
case 'p':
/*
* cpio -p is like pax -rw
*/
act = COPY;
flg |= RF | WF;
break;
case 'r':
/*
* interactive file rename
*/
iflag = 1;
flg |= IF;
break;
#ifdef notyet
case 's':
/*
* swap bytes after reading data
*/
break;
#endif
case 't':
/*
* list contents of archive
*/
act = LIST;
listf = stdout;
break;
case 'u':
/*
* don't ignore those older files
*/
uflag = 0;
kflag = 0;
flg |= UF;
break;
case 'v':
/*
* verbose operation mode
*/
vflag = 1;
flg |= VF;
break;
case 'z':
/*
* use gzip. Non standard option.
*/
gzip_program = GZIP_CMD;
break;
case 'A':
/*
* append to an archive
*/
act = APPND;
flg |= AF;
break;
case 'B':
/*
* set blocksize to 5120
*/
blksz = 5120;
break;
case 'C':
/*
* specify blocksize
*/
if ((blksz = (int)str_offt(optarg)) <= 0) {
tty_warn(1, "Invalid block size %s", optarg);
cpio_usage();
}
break;
case 'E':
/*
* file with patterns to extract or list
*/
if ((fp = fopen(optarg, "r")) == NULL) {
tty_warn(1, "Unable to open file '%s' for read",
optarg);
cpio_usage();
}
while ((str = getline(fp)) != NULL) {
pat_add(str, NULL);
}
fclose(fp);
if (getline_error) {
tty_warn(1, "Problem with file '%s'", optarg);
cpio_usage();
}
break;
case 'H':
/*
* specify an archive format on write
*/
tmp.name = optarg;
frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt);
if (frmt != NULL) {
flg |= XF;
break;
}
tty_warn(1, "Unknown -H format: %s", optarg);
(void)fputs("cpio: Known -H formats are:", stderr);
for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
(void)fprintf(stderr, " %s", fsub[i].name);
(void)fputs("\n\n", stderr);
cpio_usage();
break;
case 'I':
case 'O':
/*
* filename where the archive is stored
*/
if ((optarg[0] == '-') && (optarg[1]== '\0')) {
/*
* treat a - as stdin
*/
arcname = NULL;
break;
}
arcname = optarg;
break;
case 'L':
/*
* follow symlinks
*/
Lflag = 1;
flg |= CLF;
break;
#ifdef notyet
case 'M':
arg = optarg;
break;
case 'R':
arg = optarg;
break;
#endif
case 'S':
/*
* swap halfwords after reading data
*/
cpio_swp_head = 1;
break;
#ifdef notyet
case 'V':
break;
#endif
case 'Z':
/*
* use compress. Non standard option.
*/
gzip_program = COMPRESS_CMD;
break;
case '6':
/*
* process Version 6 cpio format
*/
frmt = &(fsub[F_BCPIO]);
case OPT_FORCE_LOCAL:
forcelocal = 1;
break;
case OPT_INSECURE:
secure = 0;
break;
default:
cpio_usage();
break;
}
}
/*
* figure out the operation mode of cpio. check that we have not been
* given a bogus set of flags for the operation mode.
*/
if (ISLIST(flg)) {
act = LIST;
bflg = flg & BDLIST;
} else if (ISEXTRACT(flg)) {
act = EXTRACT;
bflg = flg & BDEXTR;
} else if (ISARCHIVE(flg)) {
act = ARCHIVE;
bflg = flg & BDARCH;
} else if (ISAPPND(flg)) {
act = APPND;
bflg = flg & BDARCH;
} else if (ISCOPY(flg)) {
act = COPY;
bflg = flg & BDCOPY;
} else
cpio_usage();
if (bflg) {
cpio_usage();
}
/*
* if we are writing (ARCHIVE) we use the default format if the user
* did not specify a format. when we write during an APPEND, we will
* adopt the format of the existing archive if none was supplied.
*/
if (!(flg & XF) && (act == ARCHIVE))
frmt = &(fsub[F_BCPIO]);
/*
* process the args as they are interpreted by the operation mode
*/
switch (act) {
case LIST:
case EXTRACT:
for (; optind < argc; optind++)
if (pat_add(argv[optind], 0) < 0)
cpio_usage();
break;
case COPY:
if (optind >= argc) {
tty_warn(0, "Destination directory was not supplied");
cpio_usage();
}
--argc;
dirptr = argv[argc];
/* FALLTHROUGH */
case ARCHIVE:
case APPND:
if (argc != optind) {
for (; optind < argc; optind++)
if (ftree_add(argv[optind], 0) < 0)
cpio_usage();
break;
}
/*
* no read errors allowed on updates/append operation!
*/
maxflt = 0;
while ((str = getline(stdin)) != NULL) {
ftree_add(str, 0);
}
if (getline_error) {
tty_warn(1, "Problem while reading stdin");
cpio_usage();
}
break;
default:
cpio_usage();
break;
}
}
/*
* printflg()
* print out those invalid flag sets found to the user
*/
static void
printflg(unsigned int flg)
{
int nxt;
(void)fprintf(stderr,"%s: Invalid combination of options:", argv0);
while ((nxt = ffs(flg)) != 0) {
flg &= ~(1 << (nxt - 1));
(void)fprintf(stderr, " -%c", flgch[nxt - 1]);
}
(void)putc('\n', stderr);
}
/*
* c_frmt()
* comparison routine used by bsearch to find the format specified
* by the user
*/
static int
c_frmt(const void *a, const void *b)
{
return(strcmp(((FSUB *)a)->name, ((FSUB *)b)->name));
}
/*
* opt_next()
* called by format specific options routines to get each format specific
* flag and value specified with -o
* Return:
* pointer to next OPLIST entry or NULL (end of list).
*/
OPLIST *
opt_next(void)
{
OPLIST *opt;
if ((opt = ophead) != NULL)
ophead = ophead->fow;
return(opt);
}
/*
* bad_opt()
* generic routine used to complain about a format specific options
* when the format does not support options.
*/
int
bad_opt(void)
{
OPLIST *opt;
if (ophead == NULL)
return(0);
/*
* print all we were given
*/
tty_warn(1," These format options are not supported for %s",
frmt->name);
while ((opt = opt_next()) != NULL)
(void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value);
if (strcmp(NM_TAR, argv0) == 0)
tar_usage();
else if (strcmp(NM_CPIO, argv0) == 0)
cpio_usage();
else
pax_usage();
return(0);
}
/*
* opt_add()
* breaks the value supplied to -o into a option name and value. options
* are given to -o in the form -o name-value,name=value
* multiple -o may be specified.
* Return:
* 0 if format in name=value format, -1 if -o is passed junk
*/
int
opt_add(const char *str)
{
OPLIST *opt;
char *frpt;
char *pt;
char *endpt;
char *dstr;
if ((str == NULL) || (*str == '\0')) {
tty_warn(0, "Invalid option name");
return(-1);
}
if ((dstr = strdup(str)) == NULL) {
tty_warn(0, "Unable to allocate space for option list");
return(-1);
}
frpt = endpt = dstr;
/*
* break into name and values pieces and stuff each one into a
* OPLIST structure. When we know the format, the format specific
* option function will go through this list
*/
while ((frpt != NULL) && (*frpt != '\0')) {
if ((endpt = strchr(frpt, ',')) != NULL)
*endpt = '\0';
if ((pt = strchr(frpt, '=')) == NULL) {
tty_warn(0, "Invalid options format");
free(dstr);
return(-1);
}
if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) {
tty_warn(0, "Unable to allocate space for option list");
free(dstr);
return(-1);
}
*pt++ = '\0';
opt->name = frpt;
opt->value = pt;
opt->fow = NULL;
if (endpt != NULL)
frpt = endpt + 1;
else
frpt = NULL;
if (ophead == NULL) {
optail = ophead = opt;
continue;
}
optail->fow = opt;
optail = opt;
}
return(0);
}
/*
* str_offt()
* Convert an expression of the following forms to an off_t > 0.
* 1) A positive decimal number.
* 2) A positive decimal number followed by a b (mult by 512).
* 3) A positive decimal number followed by a k (mult by 1024).
* 4) A positive decimal number followed by a m (mult by 512).
* 5) A positive decimal number followed by a w (mult by sizeof int)
* 6) Two or more positive decimal numbers (with/without k,b or w).
* separated by x (also * for backwards compatibility), specifying
* the product of the indicated values.
* Return:
* 0 for an error, a positive value o.w.
*/
static off_t
str_offt(char *val)
{
char *expr;
off_t num, t;
num = STRTOOFFT(val, &expr, 0);
if ((num == OFFT_MAX) || (num <= 0) || (expr == val))
return(0);
switch(*expr) {
case 'b':
t = num;
num *= 512;
if (t > num)
return(0);
++expr;
break;
case 'k':
t = num;
num *= 1024;
if (t > num)
return(0);
++expr;
break;
case 'm':
t = num;
num *= 1048576;
if (t > num)
return(0);
++expr;
break;
case 'w':
t = num;
num *= sizeof(int);
if (t > num)
return(0);
++expr;
break;
}
switch(*expr) {
case '\0':
break;
case '*':
case 'x':
t = num;
num *= str_offt(expr + 1);
if (t > num)
return(0);
break;
default:
return(0);
}
return(num);
}
char *
getline(FILE *f)
{
char *name, *temp;
size_t len;
name = fgetln(f, &len);
if (!name) {
getline_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0;
return(0);
}
if (name[len-1] != '\n')
len++;
temp = malloc(len);
if (!temp) {
getline_error = GETLINE_OUT_OF_MEM;
return(0);
}
memcpy(temp, name, len-1);
temp[len-1] = 0;
return(temp);
}
/*
* no_op()
* for those option functions where the archive format has nothing to do.
* Return:
* 0
*/
static int
no_op(void)
{
return(0);
}
/*
* pax_usage()
* print the usage summary to the user
*/
void
pax_usage(void)
{
fprintf(stderr,
"usage: pax [-cdjnvzO] [-E limit] [-f archive] [-N dbdir] [-s replstr] ...\n"
" [-U user] ... [-G group] ... [-T [from_date][,to_date]] ...\n"
" [pattern ...]\n");
fprintf(stderr,
" pax -r [-cdijknuvzADOYZ] [-E limit] [-f archive] [-N dbdir]\n"
" [-o options] ... [-p string] ... [-s replstr] ... [-U user] ...\n"
" [-G group] ... [-T [from_date][,to_date]] ... [pattern ...]\n");
fprintf(stderr,
" pax -w [-dijtuvzAHLMOPX] [-b blocksize] [[-a] [-f archive]] [-x format]\n"
" [-B bytes] [-N dbdir] [-o options] ... [-s replstr] ...\n"
" [-U user] ... [-G group] ...\n"
" [-T [from_date][,to_date][/[c][m]]] ... [file ...]\n");
fprintf(stderr,
" pax -r -w [-dijklntuvzADHLMOPXYZ] [-N dbdir] [-p string] ...\n"
" [-s replstr] ... [-U user] ... [-G group] ...\n"
" [-T [from_date][,to_date][/[c][m]]] ... [file ...] directory\n");
exit(1);
/* NOTREACHED */
}
/*
* tar_usage()
* print the usage summary to the user
*/
void
tar_usage(void)
{
(void)fputs("usage: tar [-]{crtux}[-befhjlmopqvwzHLOPXZ014578] [archive] "
"[blocksize]\n"
" [-C directory] [-T file] [-s replstr] "
"[file ...]\n", stderr);
exit(1);
/* NOTREACHED */
}
/*
* cpio_usage()
* print the usage summary to the user
*/
void
cpio_usage(void)
{
(void)fputs("usage: cpio -o [-aABcLvzZ] [-C bytes] [-F archive] "
"[-H format] [-O archive]\n"
" < name-list [> archive]\n"
" cpio -i [-bBcdfmrsStuvzZ6] [-C bytes] [-E file] "
"[-F archive] [-H format] \n"
" [-I archive] "
"[pattern ...] [< archive]\n"
" cpio -p [-adlLmuv] destination-directory "
"< name-list\n", stderr);
exit(1);
/* NOTREACHED */
}
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