fbbd9655e5
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
1591 lines
32 KiB
C
1591 lines
32 KiB
C
/*-
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* Copyright (c) 1992 Keith Muller.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Keith Muller of the University of California, San Diego.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 4/18/94";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mtio.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <paths.h>
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#include "pax.h"
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#include "options.h"
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#include "cpio.h"
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#include "tar.h"
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#include "extern.h"
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/*
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* Routines which handle command line options
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*/
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static char flgch[] = FLGCH; /* list of all possible flags */
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static OPLIST *ophead = NULL; /* head for format specific options -x */
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static OPLIST *optail = NULL; /* option tail */
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static int no_op(void);
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static void printflg(unsigned int);
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static int c_frmt(const void *, const void *);
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static off_t str_offt(char *);
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static char *get_line(FILE *fp);
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static void pax_options(int, char **);
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static void pax_usage(void);
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static void tar_options(int, char **);
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static void tar_usage(void);
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static void cpio_options(int, char **);
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static void cpio_usage(void);
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/* errors from get_line */
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#define GETLINE_FILE_CORRUPT 1
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#define GETLINE_OUT_OF_MEM 2
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static int get_line_error;
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char *chdname;
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#define GZIP_CMD "gzip" /* command to run as gzip */
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#define COMPRESS_CMD "compress" /* command to run as compress */
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#define BZIP2_CMD "bzip2" /* command to run as gzip */
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/*
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* Format specific routine table - MUST BE IN SORTED ORDER BY NAME
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* (see pax.h for description of each function)
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*
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* name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read,
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* read, end_read, st_write, write, end_write, trail,
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* rd_data, wr_data, options
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*/
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FSUB fsub[] = {
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/* 0: OLD BINARY CPIO */
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{"bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd,
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bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, cpio_trail,
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NULL, rd_wrfile, wr_rdfile, bad_opt},
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/* 1: OLD OCTAL CHARACTER CPIO */
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{"cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd,
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cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, cpio_trail,
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NULL, rd_wrfile, wr_rdfile, bad_opt},
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/* 2: SVR4 HEX CPIO */
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{"sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd,
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vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, cpio_trail,
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NULL, rd_wrfile, wr_rdfile, bad_opt},
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/* 3: SVR4 HEX CPIO WITH CRC */
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{"sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd,
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vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, cpio_trail,
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NULL, rd_wrfile, wr_rdfile, bad_opt},
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/* 4: OLD TAR */
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{"tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op,
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tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, NULL, tar_trail,
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rd_wrfile, wr_rdfile, tar_opt},
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/* 5: POSIX USTAR */
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{"ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd,
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ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, NULL, tar_trail,
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rd_wrfile, wr_rdfile, bad_opt},
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};
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#define F_OCPIO 0 /* format when called as cpio -6 */
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#define F_ACPIO 1 /* format when called as cpio -c */
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#define F_CPIO 3 /* format when called as cpio */
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#define F_OTAR 4 /* format when called as tar -o */
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#define F_TAR 5 /* format when called as tar */
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#define DEFLT 5 /* default write format from list above */
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/*
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* ford is the archive search order used by get_arc() to determine what kind
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* of archive we are dealing with. This helps to properly id archive formats
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* some formats may be subsets of others....
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*/
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int ford[] = {5, 4, 3, 2, 1, 0, -1 };
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/*
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* options()
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* figure out if we are pax, tar or cpio. Call the appropriate options
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* parser
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*/
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void
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options(int argc, char **argv)
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{
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/*
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* Are we acting like pax, tar or cpio (based on argv[0])
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*/
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if ((argv0 = strrchr(argv[0], '/')) != NULL)
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argv0++;
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else
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argv0 = argv[0];
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if (strcmp(NM_TAR, argv0) == 0) {
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tar_options(argc, argv);
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return;
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}
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else if (strcmp(NM_CPIO, argv0) == 0) {
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cpio_options(argc, argv);
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return;
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}
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/*
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* assume pax as the default
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*/
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argv0 = NM_PAX;
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pax_options(argc, argv);
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return;
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}
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/*
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* pax_options()
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* look at the user specified flags. set globals as required and check if
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* the user specified a legal set of flags. If not, complain and exit
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*/
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static void
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pax_options(int argc, char **argv)
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{
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int c;
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size_t i;
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unsigned int flg = 0;
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unsigned int bflg = 0;
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char *pt;
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FSUB tmp;
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/*
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* process option flags
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*/
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while ((c=getopt(argc,argv,"ab:cdf:iklno:p:rs:tuvwx:zB:DE:G:HLOPT:U:XYZ"))
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!= -1) {
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switch (c) {
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case 'a':
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/*
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* append
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*/
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flg |= AF;
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break;
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case 'b':
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/*
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* specify blocksize
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*/
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flg |= BF;
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if ((wrblksz = (int)str_offt(optarg)) <= 0) {
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paxwarn(1, "Invalid block size %s", optarg);
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pax_usage();
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}
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break;
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case 'c':
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/*
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* inverse match on patterns
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*/
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cflag = 1;
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flg |= CF;
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break;
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case 'd':
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/*
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* match only dir on extract, not the subtree at dir
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*/
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dflag = 1;
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flg |= DF;
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break;
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case 'f':
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/*
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* filename where the archive is stored
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*/
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arcname = optarg;
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flg |= FF;
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break;
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case 'i':
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/*
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* interactive file rename
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*/
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iflag = 1;
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flg |= IF;
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break;
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case 'k':
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/*
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* do not clobber files that exist
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*/
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kflag = 1;
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flg |= KF;
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break;
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case 'l':
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/*
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* try to link src to dest with copy (-rw)
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*/
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lflag = 1;
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flg |= LF;
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break;
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case 'n':
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/*
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* select first match for a pattern only
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*/
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nflag = 1;
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flg |= NF;
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break;
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case 'o':
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/*
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* pass format specific options
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*/
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flg |= OF;
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if (opt_add(optarg) < 0)
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pax_usage();
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break;
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case 'p':
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/*
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* specify file characteristic options
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*/
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for (pt = optarg; *pt != '\0'; ++pt) {
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switch(*pt) {
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case 'a':
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/*
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* do not preserve access time
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*/
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patime = 0;
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break;
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case 'e':
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/*
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* preserve user id, group id, file
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* mode, access/modification times
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*/
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pids = 1;
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pmode = 1;
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patime = 1;
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pmtime = 1;
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break;
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case 'm':
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/*
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* do not preserve modification time
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*/
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pmtime = 0;
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break;
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case 'o':
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/*
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* preserve uid/gid
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*/
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pids = 1;
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break;
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case 'p':
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/*
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* preserver file mode bits
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*/
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pmode = 1;
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break;
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default:
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paxwarn(1, "Invalid -p string: %c", *pt);
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pax_usage();
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break;
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}
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}
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flg |= PF;
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break;
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case 'r':
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/*
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* read the archive
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*/
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flg |= RF;
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break;
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case 's':
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/*
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* file name substitution name pattern
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*/
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if (rep_add(optarg) < 0) {
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pax_usage();
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break;
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}
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flg |= SF;
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break;
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case 't':
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/*
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* preserve access time on file system nodes we read
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*/
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tflag = 1;
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flg |= TF;
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break;
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case 'u':
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/*
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* ignore those older files
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*/
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uflag = 1;
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flg |= UF;
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break;
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case 'v':
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/*
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* verbose operation mode
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*/
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vflag = 1;
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flg |= VF;
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break;
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case 'w':
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/*
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* write an archive
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*/
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flg |= WF;
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break;
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case 'x':
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/*
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* specify an archive format on write
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*/
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tmp.name = optarg;
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if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
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sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL) {
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flg |= XF;
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break;
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}
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paxwarn(1, "Unknown -x format: %s", optarg);
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(void)fputs("pax: Known -x formats are:", stderr);
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for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
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(void)fprintf(stderr, " %s", fsub[i].name);
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(void)fputs("\n\n", stderr);
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pax_usage();
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break;
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case 'z':
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/*
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* use gzip. Non standard option.
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*/
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gzip_program = GZIP_CMD;
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break;
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case 'B':
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/*
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* non-standard option on number of bytes written on a
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* single archive volume.
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*/
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if ((wrlimit = str_offt(optarg)) <= 0) {
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paxwarn(1, "Invalid write limit %s", optarg);
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pax_usage();
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}
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if (wrlimit % BLKMULT) {
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paxwarn(1, "Write limit is not a %d byte multiple",
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BLKMULT);
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pax_usage();
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}
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flg |= CBF;
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break;
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case 'D':
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/*
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* On extraction check file inode change time before the
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* modification of the file name. Non standard option.
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*/
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Dflag = 1;
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flg |= CDF;
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break;
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case 'E':
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/*
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* non-standard limit on read faults
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* 0 indicates stop after first error, values
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* indicate a limit, "NONE" try forever
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*/
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flg |= CEF;
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if (strcmp(NONE, optarg) == 0)
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maxflt = -1;
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else if ((maxflt = atoi(optarg)) < 0) {
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paxwarn(1, "Error count value must be positive");
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pax_usage();
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}
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break;
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case 'G':
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/*
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* non-standard option for selecting files within an
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* archive by group (gid or name)
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*/
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if (grp_add(optarg) < 0) {
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pax_usage();
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break;
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}
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flg |= CGF;
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break;
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case 'H':
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/*
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* follow command line symlinks only
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*/
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Hflag = 1;
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flg |= CHF;
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break;
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case 'L':
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|
/*
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* follow symlinks
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*/
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|
Lflag = 1;
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flg |= CLF;
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break;
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|
case 'O':
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|
/*
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|
* Force one volume. Non standard option.
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|
*/
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Oflag = 1;
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break;
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|
case 'P':
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|
/*
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* do NOT follow symlinks (default)
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|
*/
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|
Lflag = 0;
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flg |= CPF;
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break;
|
|
case 'T':
|
|
/*
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|
* non-standard option for selecting files within an
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* archive by modification time range (lower,upper)
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*/
|
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if (trng_add(optarg) < 0) {
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|
pax_usage();
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|
break;
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|
}
|
|
flg |= CTF;
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|
break;
|
|
case 'U':
|
|
/*
|
|
* non-standard option for selecting files within an
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|
* archive by user (uid or name)
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|
*/
|
|
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;
|
|
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.
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|
*/
|
|
if (ISLIST(flg)) {
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|
act = LIST;
|
|
listf = stdout;
|
|
bflg = flg & BDLIST;
|
|
} else if (ISEXTRACT(flg)) {
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act = EXTRACT;
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|
bflg = flg & BDEXTR;
|
|
} else if (ISARCHIVE(flg)) {
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|
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) {
|
|
paxwarn(0, "Destination directory was not supplied");
|
|
pax_usage();
|
|
}
|
|
--argc;
|
|
dirptr = argv[argc];
|
|
/* 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
|
|
*/
|
|
|
|
static void
|
|
tar_options(int argc, char **argv)
|
|
{
|
|
int c;
|
|
int fstdin = 0;
|
|
int tar_Oflag = 0;
|
|
int nincfiles = 0;
|
|
int incfiles_max = 0;
|
|
struct incfile {
|
|
char *file;
|
|
char *dir;
|
|
};
|
|
struct incfile *incfiles = NULL;
|
|
|
|
/*
|
|
* Set default values.
|
|
*/
|
|
rmleadslash = 1;
|
|
|
|
/*
|
|
* process option flags
|
|
*/
|
|
while ((c = getoldopt(argc, argv,
|
|
"b:cef:hjmopqruts:vwxyzBC:HI:LOPXZ014578")) != -1) {
|
|
switch(c) {
|
|
case 'b':
|
|
/*
|
|
* specify blocksize in 512-byte blocks
|
|
*/
|
|
if ((wrblksz = (int)str_offt(optarg)) <= 0) {
|
|
paxwarn(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':
|
|
case 'y':
|
|
/*
|
|
* use bzip2. Non standard option.
|
|
*/
|
|
gzip_program = BZIP2_CMD;
|
|
break;
|
|
case 'm':
|
|
/*
|
|
* do not preserve modification time
|
|
*/
|
|
pmtime = 0;
|
|
break;
|
|
case 'o':
|
|
if (opt_add("write_opt=nodir") < 0)
|
|
tar_usage();
|
|
case 'O':
|
|
tar_Oflag = 1;
|
|
break;
|
|
case 'p':
|
|
/*
|
|
* preserve uid/gid and file mode, regardless of umask
|
|
*/
|
|
pmode = 1;
|
|
pids = 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++;
|
|
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.
|
|
*/
|
|
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':
|
|
if (++nincfiles > incfiles_max) {
|
|
incfiles_max = nincfiles + 3;
|
|
incfiles = realloc(incfiles,
|
|
sizeof(*incfiles) * incfiles_max);
|
|
if (incfiles == NULL) {
|
|
paxwarn(0, "Unable to allocate space "
|
|
"for option list");
|
|
exit(1);
|
|
}
|
|
}
|
|
incfiles[nincfiles - 1].file = optarg;
|
|
incfiles[nincfiles - 1].dir = chdname;
|
|
break;
|
|
case 'L':
|
|
/*
|
|
* follow symlinks
|
|
*/
|
|
Lflag = 1;
|
|
break;
|
|
case 'P':
|
|
/*
|
|
* do not remove leading '/' from pathnames
|
|
*/
|
|
rmleadslash = 0;
|
|
break;
|
|
case 'X':
|
|
/*
|
|
* do not pass over mount points in the file system
|
|
*/
|
|
Xflag = 1;
|
|
break;
|
|
case 'Z':
|
|
/*
|
|
* use compress.
|
|
*/
|
|
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;
|
|
default:
|
|
tar_usage();
|
|
break;
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
/* 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[tar_Oflag ? F_OTAR : F_TAR]);
|
|
else if (tar_Oflag) {
|
|
paxwarn(1, "The -O/-o options are only valid when writing an archive");
|
|
tar_usage(); /* only valid when writing */
|
|
}
|
|
|
|
/*
|
|
* process the args as they are interpreted by the operation mode
|
|
*/
|
|
switch (act) {
|
|
case LIST:
|
|
case EXTRACT:
|
|
default:
|
|
{
|
|
int sawpat = 0;
|
|
char *file, *dir = NULL;
|
|
|
|
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) {
|
|
paxwarn(1, "Unable to open file '%s' for read", file);
|
|
tar_usage();
|
|
}
|
|
while ((str = get_line(fp)) != NULL) {
|
|
if (pat_add(str, dir) < 0)
|
|
tar_usage();
|
|
sawpat = 1;
|
|
}
|
|
if (strcmp(file, "-") != 0)
|
|
fclose(fp);
|
|
if (get_line_error) {
|
|
paxwarn(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 = 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 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;
|
|
|
|
/* 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) {
|
|
paxwarn(1, "Unable to open file '%s' for read", file);
|
|
tar_usage();
|
|
}
|
|
while ((str = get_line(fp)) != NULL) {
|
|
if (ftree_add(str, 0) < 0)
|
|
tar_usage();
|
|
}
|
|
if (strcmp(file, "-") != 0)
|
|
fclose(fp);
|
|
if (get_line_error) {
|
|
paxwarn(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 == NULL) || (*arcname == '\0'))) {
|
|
arcname = getenv("TAPE");
|
|
if ((arcname == NULL) || (*arcname == '\0'))
|
|
arcname = _PATH_DEFTAPE;
|
|
}
|
|
}
|
|
|
|
static int
|
|
mkpath(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)) {
|
|
paxwarn(1, "%s", path);
|
|
return (-1);
|
|
}
|
|
} else if (!S_ISDIR(sb.st_mode)) {
|
|
syswarn(1, ENOTDIR, "%s", path);
|
|
return (-1);
|
|
}
|
|
|
|
if (!done)
|
|
*slash = '/';
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
/*
|
|
* 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)
|
|
{
|
|
int c;
|
|
size_t i;
|
|
char *str;
|
|
FSUB tmp;
|
|
FILE *fp;
|
|
|
|
kflag = 1;
|
|
pids = 1;
|
|
pmode = 1;
|
|
pmtime = 0;
|
|
arcname = NULL;
|
|
dflag = 1;
|
|
act = -1;
|
|
nodirs = 1;
|
|
while ((c=getopt(argc,argv,"abcdfiklmoprstuvzABC:E:F:H:I:LO:SZ6")) != -1)
|
|
switch (c) {
|
|
case 'a':
|
|
/*
|
|
* preserve access time on files read
|
|
*/
|
|
tflag = 1;
|
|
break;
|
|
case 'b':
|
|
/*
|
|
* swap bytes and half-words when reading data
|
|
*/
|
|
break;
|
|
case 'c':
|
|
/*
|
|
* ASCII cpio header
|
|
*/
|
|
frmt = &(fsub[F_ACPIO]);
|
|
break;
|
|
case 'd':
|
|
/*
|
|
* create directories as needed
|
|
*/
|
|
nodirs = 0;
|
|
break;
|
|
case 'f':
|
|
/*
|
|
* invert meaning of pattern list
|
|
*/
|
|
cflag = 1;
|
|
break;
|
|
case 'i':
|
|
/*
|
|
* restore an archive
|
|
*/
|
|
act = EXTRACT;
|
|
break;
|
|
case 'k':
|
|
break;
|
|
case 'l':
|
|
/*
|
|
* use links instead of copies when possible
|
|
*/
|
|
lflag = 1;
|
|
break;
|
|
case 'm':
|
|
/*
|
|
* preserve modification time
|
|
*/
|
|
pmtime = 1;
|
|
break;
|
|
case 'o':
|
|
/*
|
|
* create an archive
|
|
*/
|
|
act = ARCHIVE;
|
|
frmt = &(fsub[F_CPIO]);
|
|
break;
|
|
case 'p':
|
|
/*
|
|
* copy-pass mode
|
|
*/
|
|
act = COPY;
|
|
break;
|
|
case 'r':
|
|
/*
|
|
* interactively rename files
|
|
*/
|
|
iflag = 1;
|
|
break;
|
|
case 's':
|
|
/*
|
|
* swap bytes after reading data
|
|
*/
|
|
break;
|
|
case 't':
|
|
/*
|
|
* list contents of archive
|
|
*/
|
|
act = LIST;
|
|
listf = stdout;
|
|
break;
|
|
case 'u':
|
|
/*
|
|
* replace newer files
|
|
*/
|
|
kflag = 0;
|
|
break;
|
|
case 'v':
|
|
/*
|
|
* verbose operation mode
|
|
*/
|
|
vflag = 1;
|
|
break;
|
|
case 'z':
|
|
/*
|
|
* use gzip. Non standard option.
|
|
*/
|
|
gzip_program = GZIP_CMD;
|
|
break;
|
|
case 'A':
|
|
/*
|
|
* append mode
|
|
*/
|
|
act = APPND;
|
|
break;
|
|
case 'B':
|
|
/*
|
|
* Use 5120 byte block size
|
|
*/
|
|
wrblksz = 5120;
|
|
break;
|
|
case 'C':
|
|
/*
|
|
* set block size in bytes
|
|
*/
|
|
wrblksz = atoi(optarg);
|
|
break;
|
|
case 'E':
|
|
/*
|
|
* file with patterns to extract or list
|
|
*/
|
|
if ((fp = fopen(optarg, "r")) == NULL) {
|
|
paxwarn(1, "Unable to open file '%s' for read", optarg);
|
|
cpio_usage();
|
|
}
|
|
while ((str = get_line(fp)) != NULL) {
|
|
pat_add(str, NULL);
|
|
}
|
|
fclose(fp);
|
|
if (get_line_error) {
|
|
paxwarn(1, "Problem with file '%s'", optarg);
|
|
cpio_usage();
|
|
}
|
|
break;
|
|
case 'F':
|
|
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 'H':
|
|
/*
|
|
* specify an archive format on write
|
|
*/
|
|
tmp.name = optarg;
|
|
if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
|
|
sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL)
|
|
break;
|
|
paxwarn(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 'L':
|
|
/*
|
|
* follow symbolic links
|
|
*/
|
|
Lflag = 1;
|
|
break;
|
|
case 'S':
|
|
/*
|
|
* swap halfwords after reading data
|
|
*/
|
|
break;
|
|
case 'Z':
|
|
/*
|
|
* use compress. Non standard option.
|
|
*/
|
|
gzip_program = COMPRESS_CMD;
|
|
break;
|
|
case '6':
|
|
/*
|
|
* process Version 6 cpio format
|
|
*/
|
|
frmt = &(fsub[F_OCPIO]);
|
|
break;
|
|
case '?':
|
|
default:
|
|
cpio_usage();
|
|
break;
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
/*
|
|
* process the args as they are interpreted by the operation mode
|
|
*/
|
|
switch (act) {
|
|
case LIST:
|
|
case EXTRACT:
|
|
while (*argv != NULL)
|
|
if (pat_add(*argv++, NULL) < 0)
|
|
cpio_usage();
|
|
break;
|
|
case COPY:
|
|
if (*argv == NULL) {
|
|
paxwarn(0, "Destination directory was not supplied");
|
|
cpio_usage();
|
|
}
|
|
dirptr = *argv;
|
|
if (mkpath(dirptr) < 0)
|
|
cpio_usage();
|
|
--argc;
|
|
++argv;
|
|
/* FALLTHROUGH */
|
|
case ARCHIVE:
|
|
case APPND:
|
|
if (*argv != NULL)
|
|
cpio_usage();
|
|
/*
|
|
* no read errors allowed on updates/append operation!
|
|
*/
|
|
maxflt = 0;
|
|
while ((str = get_line(stdin)) != NULL) {
|
|
ftree_add(str, 0);
|
|
}
|
|
if (get_line_error) {
|
|
paxwarn(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;
|
|
int pos = 0;
|
|
|
|
(void)fprintf(stderr,"%s: Invalid combination of options:", argv0);
|
|
while ((nxt = ffs(flg)) != 0) {
|
|
flg = flg >> nxt;
|
|
pos += nxt;
|
|
(void)fprintf(stderr, " -%c", flgch[pos-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(((const FSUB *)a)->name, ((const 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
|
|
*/
|
|
paxwarn(1,"These format options are not supported");
|
|
while ((opt = opt_next()) != NULL)
|
|
(void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value);
|
|
pax_usage();
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* opt_add()
|
|
* breaks the value supplied to -o into an 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 *lstr;
|
|
|
|
if ((str == NULL) || (*str == '\0')) {
|
|
paxwarn(0, "Invalid option name");
|
|
return(-1);
|
|
}
|
|
if ((lstr = strdup(str)) == NULL) {
|
|
paxwarn(0, "Unable to allocate space for option list");
|
|
return(-1);
|
|
}
|
|
frpt = endpt = lstr;
|
|
|
|
/*
|
|
* 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) {
|
|
paxwarn(0, "Invalid options format");
|
|
free(lstr);
|
|
return(-1);
|
|
}
|
|
if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) {
|
|
paxwarn(0, "Unable to allocate space for option list");
|
|
free(lstr);
|
|
return(-1);
|
|
}
|
|
lstr = NULL; /* parts of string going onto the OPLIST */
|
|
*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;
|
|
}
|
|
free(lstr);
|
|
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;
|
|
|
|
# ifdef NET2_STAT
|
|
num = strtol(val, &expr, 0);
|
|
if ((num == LONG_MAX) || (num <= 0) || (expr == val))
|
|
# else
|
|
num = strtoq(val, &expr, 0);
|
|
if ((num == QUAD_MAX) || (num <= 0) || (expr == val))
|
|
# endif
|
|
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 *
|
|
get_line(FILE *f)
|
|
{
|
|
char *name, *temp;
|
|
size_t len;
|
|
|
|
name = fgetln(f, &len);
|
|
if (!name) {
|
|
get_line_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0;
|
|
return(0);
|
|
}
|
|
if (name[len-1] != '\n')
|
|
len++;
|
|
temp = malloc(len);
|
|
if (!temp) {
|
|
get_line_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)
|
|
{
|
|
(void)fputs("usage: pax [-cdnOvz] [-E limit] [-f archive] ", stderr);
|
|
(void)fputs("[-s replstr] ... [-U user] ...", stderr);
|
|
(void)fputs("\n [-G group] ... ", stderr);
|
|
(void)fputs("[-T [from_date][,to_date]] ... ", stderr);
|
|
(void)fputs("[pattern ...]\n", stderr);
|
|
(void)fputs(" pax -r [-cdiknOuvzDYZ] [-E limit] ", stderr);
|
|
(void)fputs("[-f archive] [-o options] ... \n", stderr);
|
|
(void)fputs(" [-p string] ... [-s replstr] ... ", stderr);
|
|
(void)fputs("[-U user] ... [-G group] ...\n ", stderr);
|
|
(void)fputs("[-T [from_date][,to_date]] ... ", stderr);
|
|
(void)fputs(" [pattern ...]\n", stderr);
|
|
(void)fputs(" pax -w [-dituvzHLOPX] [-b blocksize] ", stderr);
|
|
(void)fputs("[ [-a] [-f archive] ] [-x format] \n", stderr);
|
|
(void)fputs(" [-B bytes] [-s replstr] ... ", stderr);
|
|
(void)fputs("[-o options] ... [-U user] ...", stderr);
|
|
(void)fputs("\n [-G group] ... ", stderr);
|
|
(void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);
|
|
(void)fputs("[file ...]\n", stderr);
|
|
(void)fputs(" pax -r -w [-diklntuvDHLOPXYZ] ", stderr);
|
|
(void)fputs("[-p string] ... [-s replstr] ...", stderr);
|
|
(void)fputs("\n [-U user] ... [-G group] ... ", stderr);
|
|
(void)fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);
|
|
(void)fputs("\n [file ...] directory\n", stderr);
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* tar_usage()
|
|
* print the usage summary to the user
|
|
*/
|
|
|
|
void
|
|
tar_usage(void)
|
|
{
|
|
(void)fputs("usage: tar [-]{crtux}[-befhjmopqsvwyzHLOPXZ014578] [blocksize] ",
|
|
stderr);
|
|
(void)fputs("[archive] [replstr] [-C directory] [-I file] [file ...]\n",
|
|
stderr);
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* cpio_usage()
|
|
* print the usage summary to the user
|
|
*/
|
|
|
|
void
|
|
cpio_usage(void)
|
|
{
|
|
(void)fputs("usage: cpio -o [-aABcLvVzZ] [-C bytes] [-H format] [-O archive]\n", stderr);
|
|
(void)fputs(" [-F archive] < name-list [> archive]\n", stderr);
|
|
(void)fputs(" cpio -i [-bBcdfmnrsStuvVzZ6] [-C bytes] [-E file] [-H format]\n", stderr);
|
|
(void)fputs(" [-I archive] [-F archive] [pattern...] [< archive]\n", stderr);
|
|
(void)fputs(" cpio -p [-adlLmuvV] destination-directory < name-list\n", stderr);
|
|
exit(1);
|
|
}
|