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Diffstat (limited to 'bin/pax/options.c')
| -rw-r--r-- | bin/pax/options.c | 1788 |
1 files changed, 1788 insertions, 0 deletions
diff --git a/bin/pax/options.c b/bin/pax/options.c new file mode 100644 index 0000000..917414c --- /dev/null +++ b/bin/pax/options.c @@ -0,0 +1,1788 @@ +/* $OpenBSD: options.c,v 1.103 2019/11/15 20:34:17 naddy Exp $ */ +/* $NetBSD: options.c,v 1.6 1996/03/26 23:54:18 mrg Exp $ */ + +/*- + * Copyright (c) 1992 Keith Muller. + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Keith Muller of the University of California, San Diego. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#include <limits.h> +#include <paths.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "pax.h" +#include "cpio.h" +#include "tar.h" +#include "extern.h" + +/* + * argv[0] names. Used for tar and cpio emulation + */ + +#define NM_TAR "tar" +#define NM_CPIO "cpio" +#define NM_PAX "pax" + +/* + * Constants used to specify the legal sets of flags in pax. For each major + * operation mode of pax, a set of illegal flags is defined. If any one of + * those illegal flags are found set, we scream and exit + */ + +/* + * flags (one for each option). + */ +#define AF 0x00000001 +#define BF 0x00000002 +#define CF 0x00000004 +#define DF 0x00000008 +#define FF 0x00000010 +#define IF 0x00000020 +#define KF 0x00000040 +#define LF 0x00000080 +#define NF 0x00000100 +#define OF 0x00000200 +#define PF 0x00000400 +#define RF 0x00000800 +#define SF 0x00001000 +#define TF 0x00002000 +#define UF 0x00004000 +#define VF 0x00008000 +#define WF 0x00010000 +#define XF 0x00020000 +#define CBF 0x00040000 /* nonstandard extension */ +#define CDF 0x00080000 /* nonstandard extension */ +#define CEF 0x00100000 /* nonstandard extension */ +#define CGF 0x00200000 /* nonstandard extension */ +#define CHF 0x00400000 /* nonstandard extension */ +#define CLF 0x00800000 /* nonstandard extension */ +#define CPF 0x01000000 /* nonstandard extension */ +#define CTF 0x02000000 /* nonstandard extension */ +#define CUF 0x04000000 /* nonstandard extension */ +#define CXF 0x08000000 +#define CYF 0x10000000 /* nonstandard extension */ +#define CZF 0x20000000 /* nonstandard extension */ +#define C0F 0x40000000 /* nonstandard extension */ + +/* + * ascii string indexed by bit position above (alter the above and you must + * alter this string) used to tell the user what flags caused us to complain + */ +#define FLGCH "abcdfiklnoprstuvwxBDEGHLPTUXYZ0" + +/* + * legal pax operation bit patterns + */ + +#define ISLIST(x) (((x) & (RF|WF)) == 0) +#define ISEXTRACT(x) (((x) & (RF|WF)) == RF) +#define ISARCHIVE(x) (((x) & (AF|RF|WF)) == WF) +#define ISAPPND(x) (((x) & (AF|RF|WF)) == (AF|WF)) +#define ISCOPY(x) (((x) & (RF|WF)) == (RF|WF)) +#define ISWRITE(x) (((x) & (RF|WF)) == WF) + +/* + * Illegal option flag subsets based on pax operation + */ + +#define BDEXTR (AF|BF|LF|TF|WF|XF|CBF|CHF|CLF|CPF|CXF) +#define BDARCH (CF|KF|LF|NF|PF|RF|CDF|CEF|CYF|CZF) +#define BDCOPY (AF|BF|FF|OF|XF|CBF|CEF) +#define BDLIST (AF|BF|IF|KF|LF|OF|PF|RF|TF|UF|WF|XF|CBF|CDF|CHF|CLF|CPF|CXF|CYF|CZF) + + +/* + * Routines which handle command line options + */ + +static char flgch[] = FLGCH; /* list of all possible flags */ +static OPLIST *ophead = NULL; /* head for format specific options -x */ +static OPLIST *optail = NULL; /* option tail */ + +static int no_op(void); +static void printflg(unsigned int); +static off_t str_offt(char *); +static char *get_line(FILE *fp); +static void pax_options(int, char **); +static void pax_usage(void); +static void tar_options(int, char **); +static void tar_usage(void); +#ifndef NOCPIO +static void cpio_options(int, char **); +static void cpio_usage(void); +#endif + +static int compress_id(char *_blk, int _size); +static int gzip_id(char *_blk, int _size); +static int bzip2_id(char *_blk, int _size); +static int xz_id(char *_blk, int _size); + +#define GZIP_CMD "gzip" /* command to run as gzip */ +#define COMPRESS_CMD "compress" /* command to run as compress */ +#define BZIP2_CMD "bzip2" /* command to run as bzip2 */ +#define XZ_CMD "xz" /* command to run as xz */ + +/* + * Format specific routine table + * (see pax.h for description of each function) + * + * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read, + * read, end_read, st_write, write, end_write, trail, + * rd_data, wr_data, options + */ + +FSUB fsub[] = { +#ifdef NOCPIO +/* 0: OLD BINARY CPIO */ + { }, +/* 1: OLD OCTAL CHARACTER CPIO */ + { }, +/* 2: SVR4 HEX CPIO */ + { }, +/* 3: SVR4 HEX CPIO WITH CRC */ + { }, +#else +/* 0: OLD BINARY CPIO */ + {"bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd, + bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, cpio_trail, + bad_opt}, + +/* 1: OLD OCTAL CHARACTER CPIO */ + {"cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd, + cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, cpio_trail, + bad_opt}, + +/* 2: SVR4 HEX CPIO */ + {"sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd, + vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, cpio_trail, + bad_opt}, + +/* 3: SVR4 HEX CPIO WITH CRC */ + {"sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd, + vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, cpio_trail, + bad_opt}, +#endif +/* 4: OLD TAR */ + {"tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op, + tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail, + tar_opt}, + +/* 5: POSIX USTAR */ + {"ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, no_op, + ustar_rd, tar_endrd, no_op, ustar_wr, tar_endwr, tar_trail, + tar_opt}, + +#ifdef SMALL +/* 6: compress, to detect failure to use -Z */ + { }, +/* 7: xz, to detect failure to decompress it */ + { }, +/* 8: bzip2, to detect failure to use -j */ + { }, +/* 9: gzip, to detect failure to use -z */ + { }, +#else +/* 6: compress, to detect failure to use -Z */ + {NULL, 0, 4, 0, 0, 0, 0, compress_id}, +/* 7: xz, to detect failure to decompress it */ + {NULL, 0, 4, 0, 0, 0, 0, xz_id}, +/* 8: bzip2, to detect failure to use -j */ + {NULL, 0, 4, 0, 0, 0, 0, bzip2_id}, +/* 9: gzip, to detect failure to use -z */ + {NULL, 0, 4, 0, 0, 0, 0, gzip_id}, +#endif +}; +#define F_OCPIO 0 /* format when called as cpio -6 */ +#define F_ACPIO 1 /* format when called as cpio -c */ +#define F_CPIO 3 /* format when called as cpio */ +#define F_OTAR 4 /* format when called as tar -o */ +#define F_TAR 5 /* format when called as tar */ +#define DEFLT 5 /* default write format from list above */ + +/* + * ford is the archive search order used by get_arc() to determine what kind + * of archive we are dealing with. This helps to properly id archive formats + * some formats may be subsets of others.... + */ +int ford[] = {5, 4, 9, 8, 7, 6, 3, 2, 1, 0, -1}; + +/* + * Do we have -C anywhere and what is it? + */ +int havechd = 0; +char *chdname = NULL; + +/* + * options() + * figure out if we are pax, tar or cpio. Call the appropriate options + * parser + */ + +void +options(int argc, char **argv) +{ + extern char *__progname; + + /* + * Are we acting like pax, tar or cpio (based on argv[0]) + */ + argv0 = __progname; + + if (strcmp(NM_TAR, argv0) == 0) { + op_mode = OP_TAR; + tar_options(argc, argv); + return; + } +#ifndef NOCPIO + else if (strcmp(NM_CPIO, argv0) == 0) { + op_mode = OP_CPIO; + cpio_options(argc, argv); + return; + } +#endif /* !NOCPIO */ + /* + * assume pax as the default + */ + argv0 = NM_PAX; + op_mode = OP_PAX; + pax_options(argc, argv); +} + +/* + * pax_options() + * look at the user specified flags. set globals as required and check if + * the user specified a legal set of flags. If not, complain and exit + */ + +static void +pax_options(int argc, char **argv) +{ + int c; + unsigned i; + unsigned int flg = 0; + unsigned int bflg = 0; + const char *errstr; + char *pt; + + /* + * process option flags + */ + while ((c=getopt(argc,argv,"ab:cdf:ijklno:p:rs:tuvwx:zB:DE:G:HJLOPT:U:XYZ0")) + != -1) { + switch (c) { + case 'a': + /* + * append + */ + flg |= AF; + break; + case 'b': + /* + * specify blocksize + */ + flg |= BF; + if ((wrblksz = (int)str_offt(optarg)) <= 0) { + paxwarn(1, "Invalid block size %s", optarg); + pax_usage(); + } + break; + case 'c': + /* + * inverse match on patterns + */ + cflag = 1; + flg |= CF; + break; + case 'd': + /* + * match only dir on extract, not the subtree at dir + */ + dflag = 1; + flg |= DF; + break; + case 'f': + /* + * filename where the archive is stored + */ + arcname = optarg; + flg |= FF; + break; + case 'i': + /* + * interactive file rename + */ + iflag = 1; + flg |= IF; + break; + case 'j': + /* + * use bzip2. Non standard option. + */ + gzip_program = BZIP2_CMD; + break; + case 'k': + /* + * do not clobber files that exist + */ + kflag = 1; + flg |= KF; + break; + case 'l': + /* + * try to link src to dest with copy (-rw) + */ + lflag = 1; + flg |= LF; + break; + case 'n': + /* + * select first match for a pattern only + */ + nflag = 1; + flg |= NF; + break; + case 'o': + /* + * pass format specific options + */ + flg |= OF; + if (opt_add(optarg) < 0) + pax_usage(); + break; + case 'p': + /* + * specify file characteristic options + */ + for (pt = optarg; *pt != '\0'; ++pt) { + switch (*pt) { + case 'a': + /* + * do not preserve access time + */ + patime = 0; + break; + case 'e': + /* + * preserve user id, group id, file + * mode, access/modification times + */ + pids = 1; + pmode = 1; + patime = 1; + pmtime = 1; + break; + case 'm': + /* + * do not preserve modification time + */ + pmtime = 0; + break; + case 'o': + /* + * preserve uid/gid + */ + pids = 1; + break; + case 'p': + /* + * preserve file mode bits + */ + pmode = 1; + break; + default: + paxwarn(1, "Invalid -p string: %c", *pt); + pax_usage(); + break; + } + } + flg |= PF; + break; + case 'r': + /* + * read the archive + */ + flg |= RF; + break; + case 's': + /* + * file name substitution name pattern + */ + if (rep_add(optarg) < 0) { + pax_usage(); + break; + } + flg |= SF; + break; + case 't': + /* + * preserve access time on filesystem nodes we read + */ + tflag = 1; + flg |= TF; + break; + case 'u': + /* + * ignore those older files + */ + uflag = 1; + flg |= UF; + break; + case 'v': + /* + * verbose operation mode + */ + vflag = 1; + flg |= VF; + break; + case 'w': + /* + * write an archive + */ + flg |= WF; + break; + case 'x': + /* + * specify an archive format on write + */ + 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]; + flg |= XF; + break; + } + paxwarn(1, "Unknown -x format: %s", optarg); + (void)fputs("pax: Known -x 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); + pax_usage(); + break; + case 'z': + /* + * use gzip. Non standard option. + */ + 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 'J': + /* + * use xz. Non standard option. + */ + gzip_program = XZ_CMD; + 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 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:vwxzBC:HI:JLNOPXZ014578")) != -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': + Oflag = 1; + break; + case 'o': + Oflag = 2; + 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 '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 'J': + /* + * use xz. Non standard option. + */ + gzip_program = XZ_CMD; + 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 = "-"; + } + 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[Oflag ? F_OTAR : F_TAR]); + + 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; + } +} + +int mkpath(char *); + +int +mkpath(path) + char *path; +{ + struct stat sb; + char *slash; + int done = 0; + + slash = path; + + while (!done) { + slash += strspn(slash, "/"); + slash += strcspn(slash, "/"); + + done = (*slash == '\0'); + *slash = '\0'; + + if (stat(path, &sb)) { + if (errno != ENOENT || mkdir(path, 0777)) { + 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:JLO: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 'J': + /* + * use xz. Non standard option. + */ + gzip_program = XZ_CMD; + 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 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. + */ + +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 + */ + +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}[014578befHhjLmNOoPpqsvwXZz]\n" + " [blocking-factor | archive | replstr] [-C directory] [-I file]\n" + " [file ...]\n" + " tar {-crtux} [-014578eHhjLmNOoPpqvwXZz] [-b blocking-factor]\n" + " [-C directory] [-f archive] [-I file] [-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 */ |