1582 lines
32 KiB
C
1582 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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* 4. 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 *getline(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 getline */
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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 getline_error;
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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:HLPT: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 '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;
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case 'T':
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/*
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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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}
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flg |= CTF;
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break;
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case 'U':
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/*
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* non-standard option for selecting files within an
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* archive by user (uid or name)
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*/
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if (usr_add(optarg) < 0) {
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pax_usage();
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break;
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}
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flg |= CUF;
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break;
|
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case 'X':
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|
/*
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* do not pass over mount points in the file system
|
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*/
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Xflag = 1;
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flg |= CXF;
|
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break;
|
|
case 'Y':
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|
/*
|
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* On extraction check file inode change time after the
|
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* modification of the file name. Non standard option.
|
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*/
|
|
Yflag = 1;
|
|
flg |= CYF;
|
|
break;
|
|
case 'Z':
|
|
/*
|
|
* On extraction check modification time after the
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* modification of the file name. Non standard option.
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*/
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Zflag = 1;
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flg |= CZF;
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|
break;
|
|
default:
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|
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)) {
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|
act = LIST;
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|
listf = stdout;
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|
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;
|
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bflg = flg & BDARCH;
|
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} else if (ISAPPND(flg)) {
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act = APPND;
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|
bflg = flg & BDARCH;
|
|
} else if (ISCOPY(flg)) {
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act = COPY;
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|
bflg = flg & BDCOPY;
|
|
} else
|
|
pax_usage();
|
|
if (bflg) {
|
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printflg(flg);
|
|
pax_usage();
|
|
}
|
|
|
|
/*
|
|
* if we are writing (ARCHIVE) we use the default format if the user
|
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* 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 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':
|
|
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[Oflag ? F_OTAR : F_TAR]);
|
|
else if (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 = getline(fp)) != NULL) {
|
|
if (pat_add(str, dir) < 0)
|
|
tar_usage();
|
|
sawpat = 1;
|
|
}
|
|
if (strcmp(file, "-") != 0)
|
|
fclose(fp);
|
|
if (getline_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 = getline(fp)) != NULL) {
|
|
if (ftree_add(str, 0) < 0)
|
|
tar_usage();
|
|
}
|
|
if (strcmp(file, "-") != 0)
|
|
fclose(fp);
|
|
if (getline_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 = getline(fp)) != NULL) {
|
|
pat_add(str, NULL);
|
|
}
|
|
fclose(fp);
|
|
if (getline_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 = getline(stdin)) != NULL) {
|
|
ftree_add(str, 0);
|
|
}
|
|
if (getline_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);
|
|
}
|
|
*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;
|
|
|
|
# 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 *
|
|
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)
|
|
{
|
|
(void)fputs("usage: pax [-cdnvz] [-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 [-cdiknuvzDYZ] [-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 [-dituvzHLPX] [-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 [-diklntuvDHLPXYZ] ", 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);
|
|
}
|