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8758bb5921
This fixes a problem where the file list output was fully-buffered when used as part of a pipeline. With this change, files are listed as they are extracted in verbose mode. OK deraadt@ guenther@
1800 lines
37 KiB
C
1800 lines
37 KiB
C
/* $OpenBSD: options.c,v 1.115 2024/05/10 20:28:31 millert Exp $ */
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/* $NetBSD: options.c,v 1.6 1996/03/26 23:54:18 mrg Exp $ */
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/*-
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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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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <limits.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "pax.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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static int bad_opt(void);
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static int opt_add(const char *);
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/*
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* argv[0] names. Used for tar and cpio emulation
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*/
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#define NM_TAR "tar"
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#define NM_CPIO "cpio"
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#define NM_PAX "pax"
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/*
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* Constants used to specify the legal sets of flags in pax. For each major
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* operation mode of pax, a set of illegal flags is defined. If any one of
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* those illegal flags are found set, we scream and exit
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*/
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/*
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* flags (one for each option).
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*/
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#define AF 0x00000001
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#define BF 0x00000002
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#define CF 0x00000004
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#define DF 0x00000008
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#define FF 0x00000010
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#define IF 0x00000020
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#define KF 0x00000040
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#define LF 0x00000080
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#define NF 0x00000100
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#define OF 0x00000200
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#define PF 0x00000400
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#define RF 0x00000800
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#define SF 0x00001000
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#define TF 0x00002000
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#define UF 0x00004000
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#define VF 0x00008000
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#define WF 0x00010000
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#define XF 0x00020000
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#define CBF 0x00040000 /* nonstandard extension */
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#define CDF 0x00080000 /* nonstandard extension */
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#define CEF 0x00100000 /* nonstandard extension */
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#define CGF 0x00200000 /* nonstandard extension */
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#define CHF 0x00400000 /* nonstandard extension */
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#define CLF 0x00800000 /* nonstandard extension */
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#define CPF 0x01000000 /* nonstandard extension */
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#define CTF 0x02000000 /* nonstandard extension */
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#define CUF 0x04000000 /* nonstandard extension */
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#define CXF 0x08000000
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#define CYF 0x10000000 /* nonstandard extension */
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#define CZF 0x20000000 /* nonstandard extension */
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#define C0F 0x40000000 /* nonstandard extension */
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/*
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* ascii string indexed by bit position above (alter the above and you must
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* alter this string) used to tell the user what flags caused us to complain
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*/
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#define FLGCH "abcdfiklnoprstuvwxBDEGHLPTUXYZ0"
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/*
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* legal pax operation bit patterns
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*/
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#define ISLIST(x) (((x) & (RF|WF)) == 0)
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#define ISEXTRACT(x) (((x) & (RF|WF)) == RF)
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#define ISARCHIVE(x) (((x) & (AF|RF|WF)) == WF)
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#define ISAPPND(x) (((x) & (AF|RF|WF)) == (AF|WF))
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#define ISCOPY(x) (((x) & (RF|WF)) == (RF|WF))
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#define ISWRITE(x) (((x) & (RF|WF)) == WF)
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/*
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* Illegal option flag subsets based on pax operation
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*/
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#define BDEXTR (AF|BF|LF|TF|WF|XF|CBF|CHF|CLF|CPF|CXF)
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#define BDARCH (CF|KF|LF|NF|PF|RF|CDF|CEF|CYF|CZF)
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#define BDCOPY (AF|BF|FF|OF|XF|CBF|CEF)
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#define BDLIST (AF|BF|IF|KF|LF|OF|PF|RF|TF|UF|WF|XF|CBF|CDF|CHF|CLF|CPF|CXF|CYF|CZF)
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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 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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#ifndef NOCPIO
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static void cpio_options(int, char **);
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static void cpio_usage(void);
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#endif
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static int compress_id(char *_blk, int _size);
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static int gzip_id(char *_blk, int _size);
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static int bzip2_id(char *_blk, int _size);
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static int xz_id(char *_blk, int _size);
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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 bzip2 */
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/*
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* Format specific routine table
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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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#ifdef NOCPIO
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/* 0: OLD BINARY CPIO */
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{ },
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/* 1: OLD OCTAL CHARACTER CPIO */
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{ },
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/* 2: SVR4 HEX CPIO */
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{ },
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/* 3: SVR4 HEX CPIO WITH CRC */
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{ },
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#else
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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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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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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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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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bad_opt},
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#endif
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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, tar_trail,
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tar_opt},
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/* 5: POSIX USTAR */
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{"ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, no_op,
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ustar_rd, tar_endrd, no_op, ustar_wr, tar_endwr, tar_trail,
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tar_opt},
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#ifdef SMALL
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/* 6: compress, to detect failure to use -Z */
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{ },
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/* 7: xz, to detect failure to decompress it */
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{ },
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/* 8: bzip2, to detect failure to use -j */
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{ },
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/* 9: gzip, to detect failure to use -z */
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{ },
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/* 10: POSIX PAX */
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{ },
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#else
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/* 6: compress, to detect failure to use -Z */
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{NULL, 0, 4, 0, 0, 0, 0, compress_id},
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/* 7: xz, to detect failure to decompress it */
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{NULL, 0, 4, 0, 0, 0, 0, xz_id},
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/* 8: bzip2, to detect failure to use -j */
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{NULL, 0, 4, 0, 0, 0, 0, bzip2_id},
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/* 9: gzip, to detect failure to use -z */
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{NULL, 0, 4, 0, 0, 0, 0, gzip_id},
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/* 10: POSIX PAX */
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{"pax", 5120, BLKMULT, 0, 1, BLKMULT, 0, pax_id, no_op,
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ustar_rd, tar_endrd, no_op, pax_wr, tar_endwr, tar_trail,
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pax_opt},
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#endif
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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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#ifdef SMALL
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# define F_TAR 5 /* default write format when called as tar: ustar */
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# define DEFLT 5 /* default write format when called as pax: ustar */
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#else
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# define F_TAR 10 /* default write format when called as tar: pax */
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# define DEFLT 10 /* default write format when called as pax: pax */
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#endif
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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[] = {10, 5, 4, 9, 8, 7, 6, 3, 2, 1, 0, -1};
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/*
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* Do we have -C anywhere and what is it?
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*/
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int havechd = 0;
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char *chdname = NULL;
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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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extern char *__progname;
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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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argv0 = __progname;
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if (strcmp(NM_TAR, argv0) == 0) {
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op_mode = OP_TAR;
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tar_options(argc, argv);
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#ifndef NOCPIO
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} else if (strcmp(NM_CPIO, argv0) == 0) {
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op_mode = OP_CPIO;
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cpio_options(argc, argv);
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#endif /* !NOCPIO */
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} else {
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argv0 = NM_PAX;
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op_mode = OP_PAX;
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pax_options(argc, argv);
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}
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/* Line-buffer the file list output as needed. */
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if (listf != stderr)
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setvbuf(listf, NULL, _IOLBF, 0);
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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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unsigned i;
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unsigned int flg = 0;
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unsigned int bflg = 0;
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const char *errstr;
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char *pt;
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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:ijklno:p:rs:tuvwx:zB:DE:G:HLOPT:U:XYZ0"))
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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 'j':
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/*
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* use bzip2. Non standard option.
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*/
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gzip_program = BZIP2_CMD;
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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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* preserve 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 filesystem 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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for (i = 0; i < sizeof(fsub)/sizeof(FSUB); ++i)
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if (fsub[i].name != NULL &&
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strcmp(fsub[i].name, optarg) == 0)
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break;
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if (i < sizeof(fsub)/sizeof(FSUB)) {
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frmt = &fsub[i];
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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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if (fsub[i].name != NULL)
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(void)fprintf(stderr, " %s",
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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;
|
|
break;
|
|
case 'B':
|
|
/*
|
|
* non-standard option on number of bytes written on a
|
|
* single archive volume.
|
|
*/
|
|
if ((wrlimit = str_offt(optarg)) <= 0) {
|
|
paxwarn(1, "Invalid write limit %s", optarg);
|
|
pax_usage();
|
|
}
|
|
if (wrlimit % BLKMULT) {
|
|
paxwarn(1, "Write limit is not a %d byte multiple",
|
|
BLKMULT);
|
|
pax_usage();
|
|
}
|
|
flg |= CBF;
|
|
break;
|
|
case 'D':
|
|
/*
|
|
* On extraction check file inode change time before the
|
|
* modification of the file name. Non standard option.
|
|
*/
|
|
Dflag = 1;
|
|
flg |= CDF;
|
|
break;
|
|
case 'E':
|
|
/*
|
|
* non-standard limit on read faults
|
|
* 0 indicates stop after first error, values
|
|
* indicate a limit
|
|
*/
|
|
flg |= CEF;
|
|
maxflt = strtonum(optarg, 0, INT_MAX, &errstr);
|
|
if (errstr) {
|
|
paxwarn(1, "Error count value: %s", errstr);
|
|
pax_usage();
|
|
}
|
|
break;
|
|
case 'G':
|
|
/*
|
|
* non-standard option for selecting files within an
|
|
* archive by group (gid or name)
|
|
*/
|
|
if (grp_add(optarg) < 0) {
|
|
pax_usage();
|
|
break;
|
|
}
|
|
flg |= CGF;
|
|
break;
|
|
case 'H':
|
|
/*
|
|
* follow command line symlinks only
|
|
*/
|
|
Hflag = 1;
|
|
flg |= CHF;
|
|
break;
|
|
case 'L':
|
|
/*
|
|
* follow symlinks
|
|
*/
|
|
Lflag = 1;
|
|
flg |= CLF;
|
|
break;
|
|
case 'O':
|
|
/*
|
|
* Force one volume. Non standard option.
|
|
*/
|
|
force_one_volume = 1;
|
|
break;
|
|
case 'P':
|
|
/*
|
|
* do NOT follow symlinks (default)
|
|
*/
|
|
Lflag = 0;
|
|
flg |= CPF;
|
|
break;
|
|
case 'T':
|
|
/*
|
|
* non-standard option for selecting files within an
|
|
* archive by modification time range (lower,upper)
|
|
*/
|
|
if (trng_add(optarg) < 0) {
|
|
pax_usage();
|
|
break;
|
|
}
|
|
flg |= CTF;
|
|
break;
|
|
case 'U':
|
|
/*
|
|
* non-standard option for selecting files within an
|
|
* archive by user (uid or name)
|
|
*/
|
|
if (usr_add(optarg) < 0) {
|
|
pax_usage();
|
|
break;
|
|
}
|
|
flg |= CUF;
|
|
break;
|
|
case 'X':
|
|
/*
|
|
* do not pass over mount points in the file system
|
|
*/
|
|
Xflag = 1;
|
|
flg |= CXF;
|
|
break;
|
|
case 'Y':
|
|
/*
|
|
* On extraction check file inode change time after the
|
|
* modification of the file name. Non standard option.
|
|
*/
|
|
Yflag = 1;
|
|
flg |= CYF;
|
|
break;
|
|
case 'Z':
|
|
/*
|
|
* On extraction check modification time after the
|
|
* modification of the file name. Non standard option.
|
|
*/
|
|
Zflag = 1;
|
|
flg |= CZF;
|
|
break;
|
|
case '0':
|
|
/*
|
|
* Use \0 as pathname terminator.
|
|
* (For use with the -print0 option of find(1).)
|
|
*/
|
|
zeroflag = 1;
|
|
flg |= C0F;
|
|
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.
|
|
*/
|
|
if (ISLIST(flg)) {
|
|
act = LIST;
|
|
listf = stdout;
|
|
bflg = flg & BDLIST;
|
|
} else if (ISEXTRACT(flg)) {
|
|
act = EXTRACT;
|
|
bflg = flg & BDEXTR;
|
|
} else if (ISARCHIVE(flg)) {
|
|
act = ARCHIVE;
|
|
bflg = flg & BDARCH;
|
|
} else if (ISAPPND(flg)) {
|
|
act = APPND;
|
|
bflg = flg & BDARCH;
|
|
} else if (ISCOPY(flg)) {
|
|
act = COPY;
|
|
bflg = flg & BDCOPY;
|
|
} else
|
|
pax_usage();
|
|
if (bflg) {
|
|
printflg(flg);
|
|
pax_usage();
|
|
}
|
|
|
|
/*
|
|
* if we are writing (ARCHIVE) we use the default format if the user
|
|
* did not specify a format. when we write during an APPEND, we will
|
|
* adopt the format of the existing archive if none was supplied.
|
|
*/
|
|
if (!(flg & XF) && (act == ARCHIVE))
|
|
frmt = &(fsub[DEFLT]);
|
|
|
|
/*
|
|
* process the args as they are interpreted by the operation mode
|
|
*/
|
|
switch (act) {
|
|
case LIST:
|
|
case EXTRACT:
|
|
for (; optind < argc; optind++)
|
|
if (pat_add(argv[optind], NULL) < 0)
|
|
pax_usage();
|
|
break;
|
|
case COPY:
|
|
if (optind >= argc) {
|
|
paxwarn(0, "Destination directory was not supplied");
|
|
pax_usage();
|
|
}
|
|
--argc;
|
|
dirptr = argv[argc];
|
|
/* FALL THROUGH */
|
|
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 nincfiles = 0;
|
|
int incfiles_max = 0;
|
|
unsigned int i;
|
|
unsigned int format = F_TAR;
|
|
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:vwxzBC:F:HI:LNOPXZ014578")) != -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
|
|
*/
|
|
arcname = optarg;
|
|
break;
|
|
case 'h':
|
|
/*
|
|
* follow symlinks
|
|
*/
|
|
Lflag = 1;
|
|
break;
|
|
case 'j':
|
|
/*
|
|
* use bzip2. Non standard option.
|
|
*/
|
|
gzip_program = BZIP2_CMD;
|
|
break;
|
|
case 'm':
|
|
/*
|
|
* do not preserve modification time
|
|
*/
|
|
pmtime = 0;
|
|
break;
|
|
case 'O':
|
|
format = F_OTAR;
|
|
break;
|
|
case 'o':
|
|
format = F_OTAR;
|
|
tar_nodir = 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':
|
|
havechd++;
|
|
chdname = optarg;
|
|
break;
|
|
case 'F':
|
|
for (i = 0; i < sizeof(fsub)/sizeof(FSUB); ++i)
|
|
if (fsub[i].name != NULL &&
|
|
strcmp(fsub[i].name, optarg) == 0)
|
|
break;
|
|
if (i < sizeof(fsub)/sizeof(FSUB)) {
|
|
format = i;
|
|
break;
|
|
}
|
|
paxwarn(1, "Unknown -F format: %s", optarg);
|
|
(void)fputs("tar: Known -F formats are:", stderr);
|
|
for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
|
|
if (fsub[i].name != NULL)
|
|
(void)fprintf(stderr, " %s",
|
|
fsub[i].name);
|
|
(void)fputs("\n\n", stderr);
|
|
tar_usage();
|
|
break;
|
|
case 'H':
|
|
/*
|
|
* follow command line symlinks only
|
|
*/
|
|
Hflag = 1;
|
|
break;
|
|
case 'I':
|
|
if (++nincfiles > incfiles_max) {
|
|
size_t n = nincfiles + 3;
|
|
struct incfile *p;
|
|
|
|
p = reallocarray(incfiles, n,
|
|
sizeof(*incfiles));
|
|
if (p == NULL) {
|
|
paxwarn(0, "Unable to allocate space "
|
|
"for option list");
|
|
exit(1);
|
|
}
|
|
incfiles = p;
|
|
incfiles_max = n;
|
|
}
|
|
incfiles[nincfiles - 1].file = optarg;
|
|
incfiles[nincfiles - 1].dir = chdname;
|
|
break;
|
|
case 'L':
|
|
/*
|
|
* follow symlinks
|
|
*/
|
|
Lflag = 1;
|
|
break;
|
|
case 'N':
|
|
/* numeric uid and gid only */
|
|
Nflag = 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;
|
|
|
|
if ((arcname == NULL) || (*arcname == '\0')) {
|
|
arcname = getenv("TAPE");
|
|
if ((arcname == NULL) || (*arcname == '\0'))
|
|
arcname = _PATH_DEFTAPE;
|
|
}
|
|
if ((arcname[0] == '-') && (arcname[1]== '\0'))
|
|
arcname = NULL;
|
|
|
|
/*
|
|
* Traditional tar behaviour: list-like output goes to stdout unless
|
|
* writing the archive there. (pax uses stderr unless in list mode)
|
|
*/
|
|
if (act == LIST || act == EXTRACT || arcname != NULL)
|
|
listf = stdout;
|
|
|
|
/* Traditional tar behaviour (pax wants to read file list from stdin) */
|
|
if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0)
|
|
exit(0);
|
|
|
|
/*
|
|
* process the args as they are interpreted by the operation mode
|
|
*/
|
|
switch (act) {
|
|
case LIST:
|
|
case EXTRACT:
|
|
default:
|
|
{
|
|
int sawpat = 0;
|
|
char *file, *dir;
|
|
|
|
while (nincfiles || *argv != NULL) {
|
|
/*
|
|
* If we queued up any include files,
|
|
* pull them in now. Otherwise, check
|
|
* for -I and -C positional flags.
|
|
* Anything else must be a file to
|
|
* extract.
|
|
*/
|
|
if (nincfiles) {
|
|
file = incfiles->file;
|
|
dir = incfiles->dir;
|
|
incfiles++;
|
|
nincfiles--;
|
|
} else if (strcmp(*argv, "-I") == 0) {
|
|
if (*++argv == NULL)
|
|
break;
|
|
file = *argv++;
|
|
dir = chdname;
|
|
} else
|
|
file = NULL;
|
|
if (file != NULL) {
|
|
FILE *fp;
|
|
char *str;
|
|
|
|
if (strcmp(file, "-") == 0)
|
|
fp = stdin;
|
|
else if ((fp = fopen(file, "r")) == NULL) {
|
|
syswarn(1, errno,
|
|
"Unable to open %s", file);
|
|
tar_usage();
|
|
}
|
|
while ((str = get_line(fp)) != NULL) {
|
|
if (pat_add(str, dir) < 0)
|
|
tar_usage();
|
|
sawpat = 1;
|
|
}
|
|
if (ferror(fp)) {
|
|
syswarn(1, errno,
|
|
"Unable to read from %s",
|
|
strcmp(file, "-") ? file :
|
|
"stdin");
|
|
tar_usage();
|
|
}
|
|
if (strcmp(file, "-") != 0)
|
|
fclose(fp);
|
|
} else if (strcmp(*argv, "-C") == 0) {
|
|
if (*++argv == NULL)
|
|
break;
|
|
chdname = *argv++;
|
|
havechd++;
|
|
} 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:
|
|
frmt = &fsub[format];
|
|
|
|
if (chdname != NULL) { /* initial chdir() */
|
|
if (ftree_add(chdname, 1) < 0)
|
|
tar_usage();
|
|
}
|
|
|
|
while (nincfiles || *argv != NULL) {
|
|
char *file, *dir;
|
|
|
|
/*
|
|
* If we queued up any include files, pull them in
|
|
* now. Otherwise, check for -I and -C positional
|
|
* flags. Anything else must be a file to include
|
|
* in the archive.
|
|
*/
|
|
if (nincfiles) {
|
|
file = incfiles->file;
|
|
dir = incfiles->dir;
|
|
incfiles++;
|
|
nincfiles--;
|
|
} else if (strcmp(*argv, "-I") == 0) {
|
|
if (*++argv == NULL)
|
|
break;
|
|
file = *argv++;
|
|
dir = NULL;
|
|
} else
|
|
file = NULL;
|
|
if (file != NULL) {
|
|
FILE *fp;
|
|
char *str;
|
|
|
|
/* 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) {
|
|
syswarn(1, errno, "Unable to open %s",
|
|
file);
|
|
tar_usage();
|
|
}
|
|
while ((str = get_line(fp)) != NULL) {
|
|
if (ftree_add(str, 0) < 0)
|
|
tar_usage();
|
|
}
|
|
if (ferror(fp)) {
|
|
syswarn(1, errno,
|
|
"Unable to read from %s",
|
|
strcmp(file, "-") ? file : "stdin");
|
|
tar_usage();
|
|
}
|
|
if (strcmp(file, "-") != 0)
|
|
fclose(fp);
|
|
} else if (strcmp(*argv, "-C") == 0) {
|
|
if (*++argv == NULL)
|
|
break;
|
|
if (ftree_add(*argv++, 1) < 0)
|
|
tar_usage();
|
|
havechd++;
|
|
} else if (ftree_add(*argv++, 0) < 0)
|
|
tar_usage();
|
|
}
|
|
/*
|
|
* no read errors allowed on updates/append operation!
|
|
*/
|
|
maxflt = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int mkpath(char *);
|
|
|
|
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);
|
|
}
|
|
|
|
#ifndef NOCPIO
|
|
/*
|
|
* 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)
|
|
{
|
|
const char *errstr;
|
|
int c, list_only = 0;
|
|
unsigned i;
|
|
char *str;
|
|
FILE *fp;
|
|
|
|
kflag = 1;
|
|
pids = 1;
|
|
pmode = 1;
|
|
pmtime = 0;
|
|
arcname = NULL;
|
|
dflag = 1;
|
|
act = -1;
|
|
nodirs = 1;
|
|
while ((c=getopt(argc,argv,"abcdfijklmoprstuvzABC: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 'j':
|
|
/*
|
|
* use bzip2. Non standard option.
|
|
*/
|
|
gzip_program = BZIP2_CMD;
|
|
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;
|
|
if (frmt == NULL)
|
|
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
|
|
*/
|
|
list_only = 1;
|
|
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 = strtonum(optarg, 0, INT_MAX, &errstr);
|
|
if (errstr) {
|
|
paxwarn(1, "Invalid block size %s: %s",
|
|
optarg, errstr);
|
|
pax_usage();
|
|
}
|
|
break;
|
|
case 'E':
|
|
/*
|
|
* file with patterns to extract or list
|
|
*/
|
|
if ((fp = fopen(optarg, "r")) == NULL) {
|
|
syswarn(1, errno, "Unable to open %s",
|
|
optarg);
|
|
cpio_usage();
|
|
}
|
|
while ((str = get_line(fp)) != NULL) {
|
|
pat_add(str, NULL);
|
|
}
|
|
if (ferror(fp)) {
|
|
syswarn(1, errno,
|
|
"Unable to read from %s", optarg);
|
|
cpio_usage();
|
|
}
|
|
fclose(fp);
|
|
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
|
|
*/
|
|
for (i = 0; i < sizeof(fsub)/sizeof(FSUB); ++i)
|
|
if (fsub[i].name != NULL &&
|
|
strcmp(fsub[i].name, optarg) == 0)
|
|
break;
|
|
if (i < sizeof(fsub)/sizeof(FSUB)) {
|
|
frmt = &fsub[i];
|
|
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)
|
|
if (fsub[i].name != NULL)
|
|
(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;
|
|
default:
|
|
cpio_usage();
|
|
break;
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
/*
|
|
* process the args as they are interpreted by the operation mode
|
|
*/
|
|
switch (act) {
|
|
case EXTRACT:
|
|
if (list_only) {
|
|
act = LIST;
|
|
|
|
/*
|
|
* cpio is like pax: list to stderr
|
|
* unless in list mode
|
|
*/
|
|
listf = stdout;
|
|
}
|
|
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;
|
|
/* FALL THROUGH */
|
|
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 (ferror(stdin)) {
|
|
syswarn(1, errno, "Unable to read from %s",
|
|
"stdin");
|
|
cpio_usage();
|
|
}
|
|
break;
|
|
default:
|
|
cpio_usage();
|
|
break;
|
|
}
|
|
}
|
|
#endif /* !NOCPIO */
|
|
|
|
/*
|
|
* 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 >>= nxt;
|
|
pos += nxt;
|
|
(void)fprintf(stderr, " -%c", flgch[pos-1]);
|
|
}
|
|
(void)putc('\n', stderr);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
static 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 a option name and value. options
|
|
* are given to -o in the form -o name-value,name=value
|
|
* multiple -o may be specified.
|
|
* Return:
|
|
* 0 if format in name=value format, -1 if -o is passed junk
|
|
*/
|
|
|
|
static int
|
|
opt_add(const char *str)
|
|
{
|
|
OPLIST *opt;
|
|
char *frpt;
|
|
char *pt;
|
|
char *endpt;
|
|
char *dstr;
|
|
|
|
if ((str == NULL) || (*str == '\0')) {
|
|
paxwarn(0, "Invalid option name");
|
|
return(-1);
|
|
}
|
|
if ((dstr = strdup(str)) == NULL) {
|
|
paxwarn(0, "Unable to allocate space for option list");
|
|
return(-1);
|
|
}
|
|
frpt = endpt = dstr;
|
|
|
|
/*
|
|
* break into name and values pieces and stuff each one into a
|
|
* OPLIST structure. When we know the format, the format specific
|
|
* option function will go through this list
|
|
*/
|
|
while ((frpt != NULL) && (*frpt != '\0')) {
|
|
if ((endpt = strchr(frpt, ',')) != NULL)
|
|
*endpt = '\0';
|
|
if ((pt = strchr(frpt, '=')) == NULL) {
|
|
paxwarn(0, "Invalid options format");
|
|
free(dstr);
|
|
return(-1);
|
|
}
|
|
if ((opt = malloc(sizeof(OPLIST))) == NULL) {
|
|
paxwarn(0, "Unable to allocate space for option list");
|
|
free(dstr);
|
|
return(-1);
|
|
}
|
|
dstr = 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(dstr);
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* str_offt()
|
|
* Convert an expression of the following forms to an off_t > 0.
|
|
* 1) A positive decimal number.
|
|
* 2) A positive decimal number followed by a b (mult by 512).
|
|
* 3) A positive decimal number followed by a k (mult by 1024).
|
|
* 4) A positive decimal number followed by a m (mult by 512).
|
|
* 5) A positive decimal number followed by a w (mult by sizeof int)
|
|
* 6) Two or more positive decimal numbers (with/without k,b or w).
|
|
* separated by x (also * for backwards compatibility), specifying
|
|
* the product of the indicated values.
|
|
* Return:
|
|
* 0 for an error, a positive value o.w.
|
|
*/
|
|
|
|
static off_t
|
|
str_offt(char *val)
|
|
{
|
|
char *expr;
|
|
off_t num, t;
|
|
|
|
num = strtoll(val, &expr, 0);
|
|
if ((num == LLONG_MAX) || (num <= 0) || (expr == val))
|
|
return(0);
|
|
|
|
switch (*expr) {
|
|
case 'b':
|
|
t = num;
|
|
num *= 512;
|
|
if (t > num)
|
|
return(0);
|
|
++expr;
|
|
break;
|
|
case 'k':
|
|
t = num;
|
|
num *= 1024;
|
|
if (t > num)
|
|
return(0);
|
|
++expr;
|
|
break;
|
|
case 'm':
|
|
t = num;
|
|
num *= 1048576;
|
|
if (t > num)
|
|
return(0);
|
|
++expr;
|
|
break;
|
|
case 'w':
|
|
t = num;
|
|
num *= sizeof(int);
|
|
if (t > num)
|
|
return(0);
|
|
++expr;
|
|
break;
|
|
}
|
|
|
|
switch (*expr) {
|
|
case '\0':
|
|
break;
|
|
case '*':
|
|
case 'x':
|
|
t = num;
|
|
num *= str_offt(expr + 1);
|
|
if (t > num)
|
|
return(0);
|
|
break;
|
|
default:
|
|
return(0);
|
|
}
|
|
return(num);
|
|
}
|
|
|
|
char *
|
|
get_line(FILE *f)
|
|
{
|
|
char *str = NULL;
|
|
size_t size = 0;
|
|
ssize_t len;
|
|
|
|
do {
|
|
len = getline(&str, &size, f);
|
|
if (len == -1) {
|
|
free(str);
|
|
return NULL;
|
|
}
|
|
if (str[len - 1] == '\n')
|
|
str[len - 1] = '\0';
|
|
} while (str[0] == '\0');
|
|
return str;
|
|
}
|
|
|
|
/*
|
|
* 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 [-0cdjnOvz] [-E limit] [-f archive] [-G group] [-s replstr]\n"
|
|
" [-T range] [-U user] [pattern ...]\n"
|
|
" pax -r [-0cDdijknOuvYZz] [-E limit] [-f archive] [-G group] [-o options]\n"
|
|
" [-p string] [-s replstr] [-T range] [-U user] [pattern ...]\n"
|
|
" pax -w [-0adHijLOPtuvXz] [-B bytes] [-b blocksize] [-f archive]\n"
|
|
" [-G group] [-o options] [-s replstr] [-T range] [-U user]\n"
|
|
" [-x format] [file ...]\n"
|
|
" pax -rw [-0DdHikLlnOPtuvXYZ] [-G group] [-p string] [-s replstr]\n"
|
|
" [-T range] [-U user] [file ...] directory\n",
|
|
stderr);
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* tar_usage()
|
|
* print the usage summary to the user
|
|
*/
|
|
|
|
void
|
|
tar_usage(void)
|
|
{
|
|
(void)fputs(
|
|
"usage: tar {crtux}[014578beFfHhjLmNOoPpqsvwXZz]\n"
|
|
" [blocking-factor | format | archive | replstr]\n"
|
|
" [-C directory] [-I file] [file ...]\n"
|
|
" tar {-crtux} [-014578eHhjLmNOoPpqvwXZz] [-b blocking-factor]\n"
|
|
" [-C directory] [-F format] [-f archive] [-I file]\n"
|
|
" [-s replstr] [file ...]\n",
|
|
stderr);
|
|
exit(1);
|
|
}
|
|
|
|
#ifndef NOCPIO
|
|
/*
|
|
* cpio_usage()
|
|
* print the usage summary to the user
|
|
*/
|
|
|
|
void
|
|
cpio_usage(void)
|
|
{
|
|
(void)fputs(
|
|
"usage: cpio -o [-AaBcjLvZz] [-C bytes] [-F archive] [-H format]\n"
|
|
" [-O archive] < name-list [> archive]\n"
|
|
" cpio -i [-6BbcdfjmrSstuvZz] [-C bytes] [-E file] [-F archive] [-H format]\n"
|
|
" [-I archive] [pattern ...] [< archive]\n"
|
|
" cpio -p [-adLlmuv] destination-directory < name-list\n",
|
|
stderr);
|
|
exit(1);
|
|
}
|
|
#endif /* !NOCPIO */
|
|
|
|
#ifndef SMALL
|
|
static int
|
|
compress_id(char *blk, int size)
|
|
{
|
|
if (size >= 2 && blk[0] == '\037' && blk[1] == '\235') {
|
|
paxwarn(0, "input compressed with %s; use the -%c option"
|
|
" to decompress it", "compress", 'Z');
|
|
exit(1);
|
|
}
|
|
return (-1);
|
|
}
|
|
|
|
static int
|
|
gzip_id(char *blk, int size)
|
|
{
|
|
if (size >= 2 && blk[0] == '\037' && blk[1] == '\213') {
|
|
paxwarn(0, "input compressed with %s; use the -%c option"
|
|
" to decompress it", "gzip", 'z');
|
|
exit(1);
|
|
}
|
|
return (-1);
|
|
}
|
|
|
|
static int
|
|
bzip2_id(char *blk, int size)
|
|
{
|
|
if (size >= 3 && blk[0] == 'B' && blk[1] == 'Z' && blk[2] == 'h') {
|
|
paxwarn(0, "input compressed with %s; use the -%c option"
|
|
" to decompress it", "bzip2", 'j');
|
|
exit(1);
|
|
}
|
|
return (-1);
|
|
}
|
|
|
|
static int
|
|
xz_id(char *blk, int size)
|
|
{
|
|
if (size >= 6 && memcmp(blk, "\xFD\x37\x7A\x58\x5A", 6) == 0) {
|
|
paxwarn(0, "input compressed with xz");
|
|
exit(1);
|
|
}
|
|
return (-1);
|
|
}
|
|
#endif /* !SMALL */
|