/* $NetBSD: options.c,v 1.118.18.1 2021/04/30 14:07:02 martin Exp $ */ /*- * Copyright (c) 1992 Keith Muller. * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Keith Muller of the University of California, San Diego. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if HAVE_NBTOOL_CONFIG_H #include "nbtool_config.h" #endif #include #if !defined(lint) #if 0 static char sccsid[] = "@(#)options.c 8.2 (Berkeley) 4/18/94"; #else __RCSID("$NetBSD: options.c,v 1.118.18.1 2021/04/30 14:07:02 martin Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #include #if HAVE_NBTOOL_CONFIG_H #include "compat_getopt.h" #else #include #endif #include #include #include #include #include #include #include #include #include "pax.h" #include "options.h" #include "cpio.h" #include "tar.h" #include "extern.h" #ifndef SMALL #include "mtree.h" #endif /* SMALL */ char *chdname; #if !HAVE_NBTOOL_CONFIG_H int do_chroot; #endif /* * Routines which handle command line options */ struct stat tst; /* Timestamp to set if non-0 */ static int nopids; /* tar mode: suppress "pids" for -p option */ static char flgch[] = FLGCH; /* list of all possible flags (pax) */ static OPLIST *ophead = NULL; /* head for format specific options -x */ static OPLIST *optail = NULL; /* option tail */ static int opt_add(const char *); static int no_op(void); static void printflg(unsigned int); static int c_frmt(const void *, const void *); static off_t str_offt(char *); static char *get_line(FILE *fp); #ifndef SMALL static int set_tstamp(const char *, struct stat *); #endif static void pax_options(int, char **); __dead static void pax_usage(void); static void tar_options(int, char **); __dead static void tar_usage(void); #ifndef NO_CPIO static void cpio_options(int, char **); __dead static void cpio_usage(void); #endif /* errors from get_line */ #define GETLINE_FILE_CORRUPT 1 #define GETLINE_OUT_OF_MEM 2 static int get_line_error; #define BZIP2_CMD "bzip2" /* command to run as bzip2 */ #define GZIP_CMD "gzip" /* command to run as gzip */ #define XZ_CMD "xz" /* command to run as xz */ #define COMPRESS_CMD "compress" /* command to run as compress */ /* * Long options. */ #define OPT_USE_COMPRESS_PROGRAM 0 #define OPT_CHECKPOINT 1 #define OPT_UNLINK 2 #define OPT_HELP 3 #define OPT_ATIME_PRESERVE 4 #define OPT_IGNORE_FAILED_READ 5 #define OPT_REMOVE_FILES 6 #define OPT_NULL 7 #define OPT_TOTALS 8 #define OPT_VERSION 9 #define OPT_EXCLUDE 10 #define OPT_BLOCK_COMPRESS 11 #define OPT_NORECURSE 12 #define OPT_FORCE_LOCAL 13 #define OPT_INSECURE 14 #define OPT_STRICT 15 #define OPT_SPARSE 16 #define OPT_XZ 17 #define OPT_GNU 18 #define OPT_TIMESTAMP 19 #if !HAVE_NBTOOL_CONFIG_H #define OPT_CHROOT 20 #endif /* * Format specific routine table - MUST BE IN SORTED ORDER BY NAME * (see pax.h for description of each function) * * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read, * read, end_read, st_write, write, end_write, trail, * subtrail, rd_data, wr_data, options */ FSUB fsub[] = { #ifndef NO_CPIO /* 0: OLD BINARY CPIO */ { "bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd, bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, NULL, cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, /* 1: OLD OCTAL CHARACTER CPIO */ { "cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd, cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, NULL, cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, /* 2: SVR4 HEX CPIO */ { "sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd, vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, NULL, cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, /* 3: SVR4 HEX CPIO WITH CRC */ { "sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd, vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, NULL, cpio_subtrail, rd_wrfile, wr_rdfile, bad_opt }, #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, NULL, rd_wrfile, wr_rdfile, tar_opt }, /* 5: POSIX USTAR */ { "ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd, ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail, NULL, rd_wrfile, wr_rdfile, bad_opt } }; #ifndef NO_CPIO #define F_BCPIO 0 /* old binary cpio format */ #define F_CPIO 1 /* old octal character cpio format */ #define F_SV4CPIO 2 /* SVR4 hex cpio format */ #define F_SV4CRC 3 /* SVR4 hex with crc cpio format */ #define F_TAR 4 /* old V7 UNIX tar format */ #define F_USTAR 5 /* ustar format */ #else #define F_TAR 0 /* old V7 UNIX tar format */ #define F_USTAR 1 /* ustar format */ #endif #define DEFLT F_USTAR /* default write format from list above */ /* * ford is the archive search order used by get_arc() to determine what kind * of archive we are dealing with. This helps to properly id archive formats * some formats may be subsets of others.... */ int ford[] = {F_USTAR, F_TAR, #ifndef NO_CPIO F_SV4CRC, F_SV4CPIO, F_CPIO, F_BCPIO, #endif -1}; /* * filename record separator */ int sep = '\n'; /* * Do we have -C anywhere? */ int havechd = 0; /* * options() * figure out if we are pax, tar or cpio. Call the appropriate options * parser */ void options(int argc, char **argv) { /* * Are we acting like pax, tar or cpio (based on argv[0]) */ if ((argv0 = strrchr(argv[0], '/')) != NULL) argv0++; else argv0 = argv[0]; if (strstr(argv0, NM_TAR)) { argv0 = NM_TAR; tar_options(argc, argv); #ifndef NO_CPIO } else if (strstr(argv0, NM_CPIO)) { argv0 = NM_CPIO; cpio_options(argc, argv); #endif } else { argv0 = NM_PAX; pax_options(argc, argv); } } struct option pax_longopts[] = { { "insecure", no_argument, 0, OPT_INSECURE }, { "force-local", no_argument, 0, OPT_FORCE_LOCAL }, { "use-compress-program", required_argument, 0, OPT_USE_COMPRESS_PROGRAM }, { "xz", no_argument, 0, OPT_XZ }, { "gnu", no_argument, 0, OPT_GNU }, { "timestamp", required_argument, 0, OPT_TIMESTAMP }, { 0, 0, 0, 0 }, }; /* * 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; size_t i; u_int64_t flg = 0; u_int64_t bflg = 0; char *pt; FSUB tmp; /* * process option flags */ while ((c = getopt_long(argc, argv, "0ab:cdf:ijklno:p:rs:tuvwx:zAB:DE:G:HLMN:OPT:U:VXYZ", pax_longopts, NULL)) != -1) { switch (c) { case '0': sep = '\0'; break; case 'a': /* * append */ flg |= AF; break; case 'b': /* * specify blocksize */ flg |= BF; if ((wrblksz = (int)str_offt(optarg)) <= 0) { tty_warn(1, "Invalid block size %s", optarg); pax_usage(); } break; case 'c': /* * inverse match on patterns */ cflag = 1; flg |= CF; break; case 'd': /* * match only dir on extract, not the subtree at dir */ dflag = 1; flg |= DF; break; case 'f': /* * filename where the archive is stored */ arcname = optarg; flg |= FF; break; case 'i': /* * interactive file rename */ iflag = 1; flg |= IF; break; case 'j': /* * pass through bzip2 */ gzip_program = BZIP2_CMD; break; case 'k': /* * do not clobber files that exist */ kflag = 1; flg |= KF; break; case 'l': /* * try to link src to dest with copy (-rw) */ lflag = 1; flg |= LF; break; case 'n': /* * select first match for a pattern only */ nflag = 1; flg |= NF; break; case 'o': /* * pass format specific options */ flg |= OF; if (opt_add(optarg) < 0) pax_usage(); break; case 'p': /* * specify file characteristic options */ for (pt = optarg; *pt != '\0'; ++pt) { switch(*pt) { case 'a': /* * do not preserve access time */ patime = 0; break; case 'e': /* * preserve user id, group id, file * mode, access/modification times * and file flags. */ pids = 1; pmode = 1; patime = 1; pmtime = 1; pfflags = 1; break; #if 0 case 'f': /* * do not preserve file flags */ pfflags = 0; break; #endif case 'm': /* * do not preserve modification time */ pmtime = 0; break; case 'o': /* * preserve uid/gid */ pids = 1; break; case 'p': /* * preserve file mode bits */ pmode = 1; break; default: tty_warn(1, "Invalid -p string: %c", *pt); pax_usage(); break; } } flg |= PF; break; case 'r': /* * read the archive */ flg |= RF; break; case 's': /* * file name substitution name pattern */ if (rep_add(optarg) < 0) { pax_usage(); break; } flg |= SF; break; case 't': /* * preserve access time on filesystem nodes we read */ tflag = 1; flg |= TF; break; case 'u': /* * ignore those older files */ uflag = 1; flg |= UF; break; case 'v': /* * verbose operation mode */ vflag = 1; flg |= VF; break; case 'w': /* * write an archive */ flg |= WF; break; case 'x': /* * specify an archive format on write */ tmp.name = optarg; frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); if (frmt != NULL) { flg |= XF; break; } tty_warn(1, "Unknown -x format: %s", optarg); (void)fputs("pax: Known -x formats are:", stderr); for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) (void)fprintf(stderr, " %s", fsub[i].name); (void)fputs("\n\n", stderr); pax_usage(); break; case 'z': /* * use gzip. Non standard option. */ gzip_program = GZIP_CMD; break; case 'A': Aflag = 1; flg |= CAF; break; case 'B': /* * non-standard option on number of bytes written on a * single archive volume. */ if ((wrlimit = str_offt(optarg)) <= 0) { tty_warn(1, "Invalid write limit %s", optarg); pax_usage(); } if (wrlimit % BLKMULT) { tty_warn(1, "Write limit is not a %d byte multiple", BLKMULT); pax_usage(); } flg |= CBF; break; case 'D': /* * On extraction check file inode change time before the * modification of the file name. Non standard option. */ Dflag = 1; flg |= CDF; break; case 'E': /* * non-standard limit on read faults * 0 indicates stop after first error, values * indicate a limit, "none" try forever */ flg |= CEF; if (strcmp(none, optarg) == 0) maxflt = -1; else if ((maxflt = atoi(optarg)) < 0) { tty_warn(1, "Error count value must be positive"); pax_usage(); } break; case 'G': /* * non-standard option for selecting files within an * archive by group (gid or name) */ if (grp_add(optarg) < 0) { pax_usage(); break; } flg |= CGF; break; case 'H': /* * follow command line symlinks only */ Hflag = 1; flg |= CHF; break; case 'L': /* * follow symlinks */ Lflag = 1; flg |= CLF; break; #ifdef SMALL case 'M': case 'N': tty_warn(1, "Support for -%c is not compiled in", c); exit(1); #else /* !SMALL */ case 'M': /* * Treat list of filenames on stdin as an * mtree(8) specfile. Non standard option. */ Mflag = 1; flg |= CMF; break; case 'N': /* * Use alternative directory for user db lookups. */ if (!setup_getid(optarg)) { tty_warn(1, "Unable to use user and group databases in `%s'", optarg); pax_usage(); } break; #endif /* !SMALL */ case 'O': /* * Force one volume. Non standard option. */ force_one_volume = 1; break; case 'P': /* * do NOT follow symlinks (default) */ Lflag = 0; flg |= CPF; break; case 'T': /* * non-standard option for selecting files within an * archive by modification time range (lower,upper) */ if (trng_add(optarg) < 0) { pax_usage(); break; } flg |= CTF; break; case 'U': /* * non-standard option for selecting files within an * archive by user (uid or name) */ if (usr_add(optarg) < 0) { pax_usage(); break; } flg |= CUF; break; case 'V': /* * somewhat verbose operation mode (no listing) */ Vflag = 1; flg |= VSF; break; case 'X': /* * do not pass over mount points in the file system */ Xflag = 1; flg |= CXF; break; case 'Y': /* * On extraction check file inode change time after the * modification of the file name. Non standard option. */ Yflag = 1; flg |= CYF; break; case 'Z': /* * On extraction check modification time after the * modification of the file name. Non standard option. */ Zflag = 1; flg |= CZF; break; case OPT_INSECURE: secure = 0; break; case OPT_FORCE_LOCAL: forcelocal = 1; break; case OPT_USE_COMPRESS_PROGRAM: gzip_program = optarg; break; case OPT_XZ: gzip_program = XZ_CMD; break; case OPT_GNU: is_gnutar = 1; break; #ifndef SMALL case OPT_TIMESTAMP: if (set_tstamp(optarg, &tst) == -1) { tty_warn(1, "Invalid timestamp `%s'", optarg); tar_usage(); } break; #endif case '?': default: pax_usage(); break; } } /* * figure out the operation mode of pax read,write,extract,copy,append * or list. check that we have not been given a bogus set of flags * for the operation mode. */ if (ISLIST(flg)) { act = LIST; listf = stdout; bflg = flg & BDLIST; } else if (ISEXTRACT(flg)) { act = EXTRACT; bflg = flg & BDEXTR; } else if (ISARCHIVE(flg)) { act = ARCHIVE; bflg = flg & BDARCH; } else if (ISAPPND(flg)) { act = APPND; bflg = flg & BDARCH; } else if (ISCOPY(flg)) { act = COPY; bflg = flg & BDCOPY; } else pax_usage(); if (bflg) { printflg(flg); pax_usage(); } /* * if we are writing (ARCHIVE) we use the default format if the user * did not specify a format. when we write during an APPEND, we will * adopt the format of the existing archive if none was supplied. */ if (!(flg & XF) && (act == ARCHIVE)) frmt = &(fsub[DEFLT]); /* * process the args as they are interpreted by the operation mode */ switch (act) { case LIST: case EXTRACT: for (; optind < argc; optind++) if (pat_add(argv[optind], NULL, 0) < 0) pax_usage(); break; case COPY: if (optind >= argc) { tty_warn(0, "Destination directory was not supplied"); pax_usage(); } --argc; dirptr = argv[argc]; if (mkpath(dirptr) < 0) exit(1); /* FALLTHROUGH */ case ARCHIVE: case APPND: for (; optind < argc; optind++) if (ftree_add(argv[optind], 0) < 0) pax_usage(); /* * no read errors allowed on updates/append operation! */ maxflt = 0; break; } } /* * tar_options() * look at the user specified flags. set globals as required and check if * the user specified a legal set of flags. If not, complain and exit */ struct option tar_longopts[] = { { "block-size", required_argument, 0, 'b' }, { "bunzip2", no_argument, 0, 'j' }, { "bzip2", no_argument, 0, 'j' }, { "create", no_argument, 0, 'c' }, /* F */ /* -e -- no corresponding long option */ { "file", required_argument, 0, 'f' }, { "dereference", no_argument, 0, 'h' }, { "keep-old-files", no_argument, 0, 'k' }, { "one-file-system", no_argument, 0, 'l' }, { "modification-time", no_argument, 0, 'm' }, { "old-archive", no_argument, 0, 'o' }, { "portability", no_argument, 0, 'o' }, { "same-permissions", no_argument, 0, 'p' }, { "preserve-permissions", no_argument, 0, 'p' }, { "preserve", no_argument, 0, 'p' }, { "fast-read", no_argument, 0, 'q' }, { "append", no_argument, 0, 'r' }, /* F */ { "update", no_argument, 0, 'u' }, /* F */ { "list", no_argument, 0, 't' }, /* F */ { "verbose", no_argument, 0, 'v' }, { "interactive", no_argument, 0, 'w' }, { "confirmation", no_argument, 0, 'w' }, { "extract", no_argument, 0, 'x' }, /* F */ { "get", no_argument, 0, 'x' }, /* F */ { "gzip", no_argument, 0, 'z' }, { "gunzip", no_argument, 0, 'z' }, { "read-full-blocks", no_argument, 0, 'B' }, { "directory", required_argument, 0, 'C' }, { "xz", no_argument, 0, 'J' }, { "to-stdout", no_argument, 0, 'O' }, { "absolute-paths", no_argument, 0, 'P' }, { "sparse", no_argument, 0, 'S' }, { "files-from", required_argument, 0, 'T' }, { "summary", no_argument, 0, 'V' }, { "stats", no_argument, 0, 'V' }, { "exclude-from", required_argument, 0, 'X' }, { "compress", no_argument, 0, 'Z' }, { "uncompress", no_argument, 0, 'Z' }, { "strict", no_argument, 0, OPT_STRICT }, { "atime-preserve", no_argument, 0, OPT_ATIME_PRESERVE }, { "unlink", no_argument, 0, OPT_UNLINK }, { "use-compress-program", required_argument, 0, OPT_USE_COMPRESS_PROGRAM }, { "force-local", no_argument, 0, OPT_FORCE_LOCAL }, { "insecure", no_argument, 0, OPT_INSECURE }, { "exclude", required_argument, 0, OPT_EXCLUDE }, { "no-recursion", no_argument, 0, OPT_NORECURSE }, #if !HAVE_NBTOOL_CONFIG_H { "chroot", no_argument, 0, OPT_CHROOT }, #endif { "timestamp", required_argument, 0, OPT_TIMESTAMP }, #if 0 /* Not implemented */ { "catenate", no_argument, 0, 'A' }, /* F */ { "concatenate", no_argument, 0, 'A' }, /* F */ { "diff", no_argument, 0, 'd' }, /* F */ { "compare", no_argument, 0, 'd' }, /* F */ { "checkpoint", no_argument, 0, OPT_CHECKPOINT }, { "help", no_argument, 0, OPT_HELP }, { "info-script", required_argument, 0, 'F' }, { "new-volume-script", required_argument, 0, 'F' }, { "incremental", no_argument, 0, 'G' }, { "listed-incremental", required_argument, 0, 'g' }, { "ignore-zeros", no_argument, 0, 'i' }, { "ignore-failed-read", no_argument, 0, OPT_IGNORE_FAILED_READ }, { "starting-file", no_argument, 0, 'K' }, { "tape-length", required_argument, 0, 'L' }, { "multi-volume", no_argument, 0, 'M' }, { "after-date", required_argument, 0, 'N' }, { "newer", required_argument, 0, 'N' }, { "record-number", no_argument, 0, 'R' }, { "remove-files", no_argument, 0, OPT_REMOVE_FILES }, { "same-order", no_argument, 0, 's' }, { "preserve-order", no_argument, 0, 's' }, { "null", no_argument, 0, OPT_NULL }, { "totals", no_argument, 0, OPT_TOTALS }, { "volume-name", required_argument, 0, 'V' }, /* XXX */ { "label", required_argument, 0, 'V' }, /* XXX */ { "version", no_argument, 0, OPT_VERSION }, { "verify", no_argument, 0, 'W' }, { "block-compress", no_argument, 0, OPT_BLOCK_COMPRESS }, #endif { 0, 0, 0, 0 }, }; static void tar_set_action(int op) { if (act != ERROR && act != op) tar_usage(); act = op; } static void tar_options(int argc, char **argv) { int c; int fstdin = 0; int Oflag = 0; int nincfiles = 0; int incfiles_max = 0; struct incfile { char *file; char *dir; }; struct incfile *incfiles = NULL; /* * Set default values. */ rmleadslash = 1; is_gnutar = 1; /* * process option flags */ while ((c = getoldopt(argc, argv, "+b:cef:hjklmopqrs:tuvwxzBC:HI:JOPST:X:Z014578", tar_longopts, NULL)) != -1) { switch(c) { case 'b': /* * specify blocksize in 512-byte blocks */ if ((wrblksz = (int)str_offt(optarg)) <= 0) { tty_warn(1, "Invalid block size %s", optarg); tar_usage(); } wrblksz *= 512; /* XXX - check for int oflow */ break; case 'c': /* * create an archive */ tar_set_action(ARCHIVE); break; case 'e': /* * stop after first error */ maxflt = 0; break; case 'f': /* * filename where the archive is stored */ if ((optarg[0] == '-') && (optarg[1]== '\0')) { /* * treat a - as stdin */ fstdin = 1; arcname = NULL; break; } fstdin = 0; arcname = optarg; break; case 'h': /* * follow symlinks */ Lflag = 1; break; case 'j': /* * pass through bzip2. not a standard option */ gzip_program = BZIP2_CMD; break; case 'k': /* * do not clobber files that exist */ kflag = 1; break; case 'l': /* * do not pass over mount points in the file system */ Xflag = 1; break; case 'm': /* * do not preserve modification time */ pmtime = 0; break; case 'o': /* * This option does several things based on whether * this is a create or extract operation. */ if (act == ARCHIVE) { /* GNU tar: write V7 format archives. */ Oflag = 1; /* 4.2BSD: don't add directory entries. */ if (opt_add("write_opt=nodir") < 0) tar_usage(); } else { /* SUS: don't preserve owner/group. */ pids = 0; nopids = 1; } break; case 'p': /* * preserve user id, group id, file * mode, access/modification times */ if (!nopids) pids = 1; pmode = 1; patime = 1; pmtime = 1; break; case 'q': /* * select first match for a pattern only */ nflag = 1; break; case 'r': case 'u': /* * append to the archive */ tar_set_action(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 */ tar_set_action(LIST); break; case 'v': /* * verbose operation mode */ vflag = 1; break; case 'w': /* * interactive file rename */ iflag = 1; break; case 'x': /* * extract an archive, preserving mode, * and mtime if possible. */ tar_set_action(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': case 'T': if (++nincfiles > incfiles_max) { incfiles_max = nincfiles + 3; incfiles = realloc(incfiles, sizeof(*incfiles) * incfiles_max); if (incfiles == NULL) { tty_warn(0, "Unable to allocate space " "for option list"); exit(1); } } incfiles[nincfiles - 1].file = optarg; incfiles[nincfiles - 1].dir = chdname; break; case 'J': gzip_program = XZ_CMD; break; case 'O': Oflag = 1; break; case 'P': /* * do not remove leading '/' from pathnames */ rmleadslash = 0; Aflag = 1; break; case 'S': /* do nothing; we already generate sparse files */ break; case 'V': /* * semi-verbose operation mode (no listing) */ Vflag = 1; break; case 'X': /* * GNU tar compat: exclude the files listed in optarg */ if (tar_gnutar_X_compat(optarg) != 0) tar_usage(); break; case 'Z': /* * use compress. */ gzip_program = COMPRESS_CMD; break; case '0': arcname = DEV_0; break; case '1': arcname = DEV_1; break; case '4': arcname = DEV_4; break; case '5': arcname = DEV_5; break; case '7': arcname = DEV_7; break; case '8': arcname = DEV_8; break; case OPT_ATIME_PRESERVE: patime = 1; break; case OPT_UNLINK: /* Just ignore -- we always unlink first. */ break; case OPT_USE_COMPRESS_PROGRAM: gzip_program = optarg; break; case OPT_FORCE_LOCAL: forcelocal = 1; break; case OPT_INSECURE: secure = 0; break; case OPT_STRICT: /* disable gnu extensions */ is_gnutar = 0; break; case OPT_EXCLUDE: if (tar_gnutar_minus_minus_exclude(optarg) != 0) tar_usage(); break; case OPT_NORECURSE: dflag = 1; break; #if !HAVE_NBTOOL_CONFIG_H case OPT_CHROOT: do_chroot = 1; break; #endif #ifndef SMALL case OPT_TIMESTAMP: if (set_tstamp(optarg, &tst) == -1) { tty_warn(1, "Invalid timestamp `%s'", optarg); tar_usage(); } break; #endif default: tar_usage(); break; } } argc -= optind; argv += optind; /* Tar requires an action. */ if (act == ERROR) tar_usage(); /* Traditional tar behaviour (pax uses stderr unless in list mode) */ if (fstdin == 1 && act == ARCHIVE) listf = stderr; else listf = stdout; /* Traditional tar behaviour (pax wants to read file list from stdin) */ if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0) exit(0); /* * if we are writing (ARCHIVE) specify tar, otherwise run like pax * (unless -o specified) */ if (act == ARCHIVE || act == APPND) frmt = &(fsub[Oflag ? F_TAR : F_USTAR]); else if (Oflag) { if (act == EXTRACT) to_stdout = 1; else { tty_warn(1, "The -O/-o options are only valid when " "writing or extracting an archive"); tar_usage(); } } /* * process the args as they are interpreted by the operation mode */ switch (act) { case LIST: case EXTRACT: default: { int sawpat = 0; int dirisnext = 0; char *file, *dir = NULL; int mustfreedir = 0; 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; mustfreedir = 0; incfiles++; nincfiles--; } else if (strcmp(*argv, "-I") == 0) { if (*++argv == NULL) break; file = *argv++; dir = chdname; mustfreedir = 0; } else { file = NULL; dir = NULL; mustfreedir = 0; } if (file != NULL) { FILE *fp; char *str; if (strcmp(file, "-") == 0) fp = stdin; else if ((fp = fopen(file, "r")) == NULL) { tty_warn(1, "Unable to open file '%s' for read", file); tar_usage(); } while ((str = get_line(fp)) != NULL) { if (dirisnext) { if (dir && mustfreedir) free(dir); dir = str; mustfreedir = 1; dirisnext = 0; continue; } if (strcmp(str, "-C") == 0) { havechd++; dirisnext = 1; free(str); continue; } if (strncmp(str, "-C ", 3) == 0) { havechd++; if (dir && mustfreedir) free(dir); dir = strdup(str + 3); mustfreedir = 1; free(str); continue; } if (pat_add(str, dir, NOGLOB_MTCH) < 0) tar_usage(); sawpat = 1; } /* Bomb if given -C w/out a dir. */ if (dirisnext) tar_usage(); if (dir && mustfreedir) free(dir); if (strcmp(file, "-") != 0) fclose(fp); if (get_line_error) { tty_warn(1, "Problem with file '%s'", file); tar_usage(); } } else if (strcmp(*argv, "-C") == 0) { if (*++argv == NULL) break; chdname = *argv++; havechd++; } else if (pat_add(*argv++, chdname, 0) < 0) tar_usage(); else sawpat = 1; } /* * if patterns were added, we are doing chdir() * on a file-by-file basis, else, just one * global chdir (if any) after opening input. */ if (sawpat > 0) chdname = NULL; } break; case ARCHIVE: case APPND: if (chdname != NULL) { /* initial chdir() */ if (ftree_add(chdname, 1) < 0) tar_usage(); } while (nincfiles || *argv != NULL) { char *file, *dir; /* * If we queued up any include files, pull them in * now. Otherwise, check for -I and -C positional * flags. Anything else must be a file to include * in the archive. */ if (nincfiles) { file = incfiles->file; dir = incfiles->dir; incfiles++; nincfiles--; } else if (strcmp(*argv, "-I") == 0) { if (*++argv == NULL) break; file = *argv++; dir = NULL; } else { file = NULL; dir = NULL; } if (file != NULL) { FILE *fp; char *str; int dirisnext = 0; /* Set directory if needed */ if (dir) { if (ftree_add(dir, 1) < 0) tar_usage(); } if (strcmp(file, "-") == 0) fp = stdin; else if ((fp = fopen(file, "r")) == NULL) { tty_warn(1, "Unable to open file '%s' for read", file); tar_usage(); } while ((str = get_line(fp)) != NULL) { if (dirisnext) { if (ftree_add(str, 1) < 0) tar_usage(); dirisnext = 0; continue; } if (strcmp(str, "-C") == 0) { dirisnext = 1; continue; } if (strncmp(str, "-C ", 3) == 0) { if (ftree_add(str + 3, 1) < 0) tar_usage(); continue; } if (ftree_add(str, 0) < 0) tar_usage(); } /* Bomb if given -C w/out a dir. */ if (dirisnext) tar_usage(); if (strcmp(file, "-") != 0) fclose(fp); if (get_line_error) { tty_warn(1, "Problem with file '%s'", file); tar_usage(); } } else if (strcmp(*argv, "-C") == 0) { if (*++argv == NULL) break; if (ftree_add(*argv++, 1) < 0) tar_usage(); } else if (ftree_add(*argv++, 0) < 0) tar_usage(); } /* * no read errors allowed on updates/append operation! */ maxflt = 0; break; } if (!fstdin && ((arcname == NULL) || (*arcname == '\0'))) { arcname = getenv("TAPE"); if ((arcname == NULL) || (*arcname == '\0')) arcname = _PATH_DEFTAPE; } } int mkpath(char *path) { char *slash; int done = 0; slash = path; while (!done) { slash += strspn(slash, "/"); slash += strcspn(slash, "/"); done = (*slash == '\0'); *slash = '\0'; if (domkdir(path, 0777) == -1) goto out; if (!done) *slash = '/'; } return 0; out: /* Can't create or or not a directory */ syswarn(1, errno, "Cannot create directory `%s'", path); return -1; } #ifndef NO_CPIO struct option cpio_longopts[] = { { "reset-access-time", no_argument, 0, 'a' }, { "make-directories", no_argument, 0, 'd' }, { "nonmatching", no_argument, 0, 'f' }, { "extract", no_argument, 0, 'i' }, { "link", no_argument, 0, 'l' }, { "preserve-modification-time", no_argument, 0, 'm' }, { "create", no_argument, 0, 'o' }, { "pass-through", no_argument, 0, 'p' }, { "rename", no_argument, 0, 'r' }, { "list", no_argument, 0, 't' }, { "unconditional", no_argument, 0, 'u' }, { "verbose", no_argument, 0, 'v' }, { "append", no_argument, 0, 'A' }, { "pattern-file", required_argument, 0, 'E' }, { "file", required_argument, 0, 'F' }, { "force-local", no_argument, 0, OPT_FORCE_LOCAL }, { "format", required_argument, 0, 'H' }, { "dereference", no_argument, 0, 'L' }, { "swap-halfwords", no_argument, 0, 'S' }, { "summary", no_argument, 0, 'V' }, { "stats", no_argument, 0, 'V' }, { "insecure", no_argument, 0, OPT_INSECURE }, { "sparse", no_argument, 0, OPT_SPARSE }, { "xz", no_argument, 0, OPT_XZ }, #ifdef notyet /* Not implemented */ { "null", no_argument, 0, '0' }, { "swap", no_argument, 0, 'b' }, { "numeric-uid-gid", no_argument, 0, 'n' }, { "swap-bytes", no_argument, 0, 's' }, { "message", required_argument, 0, 'M' }, { "owner", required_argument, 0 'R' }, { "dot", no_argument, 0, 'V' }, /* xxx */ { "block-size", required_argument, 0, OPT_BLOCK_SIZE }, { "no-absolute-pathnames", no_argument, 0, OPT_NO_ABSOLUTE_PATHNAMES }, { "no-preserve-owner", no_argument, 0, OPT_NO_PRESERVE_OWNER }, { "only-verify-crc", no_argument, 0, OPT_ONLY_VERIFY_CRC }, { "rsh-command", required_argument, 0, OPT_RSH_COMMAND }, { "version", no_argument, 0, OPT_VERSION }, #endif { 0, 0, 0, 0 }, }; static void cpio_set_action(int op) { if ((act == APPND && op == ARCHIVE) || (act == ARCHIVE && op == APPND)) act = APPND; else if (act == EXTRACT && op == LIST) act = op; else if (act != ERROR && act != op) cpio_usage(); else act = op; } /* * cpio_options() * look at the user specified flags. set globals as required and check if * the user specified a legal set of flags. If not, complain and exit */ static void cpio_options(int argc, char **argv) { FSUB tmp; u_int64_t flg = 0; u_int64_t bflg = 0; int c; size_t i; FILE *fp; char *str; uflag = 1; kflag = 1; pids = 1; pmode = 1; pmtime = 0; arcname = NULL; dflag = 1; nodirs = 1; /* * process option flags */ while ((c = getoldopt(argc, argv, "+abcdfiklmoprstuvzABC:E:F:H:I:LM:O:R:SVZ6", cpio_longopts, NULL)) != -1) { switch(c) { case 'a': /* * preserve access time on filesystem nodes we read */ tflag = 1; flg |= TF; break; #ifdef notyet case 'b': /* * swap bytes and half-words when reading data */ break; #endif case 'c': /* * ASCII cpio header */ frmt = &fsub[F_SV4CPIO]; break; case 'd': /* * create directories as needed * pax does this by default .. */ nodirs = 0; break; case 'f': /* * inverse match on patterns */ cflag = 1; flg |= CF; break; case 'i': /* * read the archive */ cpio_set_action(EXTRACT); flg |= RF; break; #ifdef notyet case 'k': break; #endif case 'l': /* * try to link src to dest with copy (-rw) */ lflag = 1; flg |= LF; break; case 'm': /* * preserve mtime */ flg |= PF; pmtime = 1; break; case 'o': /* * write an archive */ cpio_set_action(ARCHIVE); frmt = &(fsub[F_SV4CRC]); flg |= WF; break; case 'p': /* * cpio -p is like pax -rw */ cpio_set_action(COPY); flg |= RF | WF; break; case 'r': /* * interactive file rename */ iflag = 1; flg |= IF; break; #ifdef notyet case 's': /* * swap bytes after reading data */ break; #endif case 't': /* * list contents of archive */ cpio_set_action(LIST); listf = stdout; flg &= ~RF; break; case 'u': /* * don't ignore those older files */ uflag = 0; kflag = 0; flg |= UF; break; case 'v': /* * verbose operation mode */ vflag = 1; flg |= VF; break; case 'z': /* * use gzip. Non standard option. */ gzip_program = GZIP_CMD; break; case 'A': /* * append to an archive */ cpio_set_action(APPND); flg |= AF; break; case 'B': /* * set blocksize to 5120 */ blksz = 5120; break; case 'C': /* * specify blocksize */ if ((blksz = (int)str_offt(optarg)) <= 0) { tty_warn(1, "Invalid block size %s", optarg); cpio_usage(); } break; case 'E': /* * file with patterns to extract or list */ if ((fp = fopen(optarg, "r")) == NULL) { tty_warn(1, "Unable to open file '%s' for read", optarg); cpio_usage(); } while ((str = get_line(fp)) != NULL) { pat_add(str, NULL, 0); } fclose(fp); if (get_line_error) { tty_warn(1, "Problem with file '%s'", optarg); cpio_usage(); } break; case 'H': /* * specify an archive format on write */ tmp.name = optarg; frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub, sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt); if (frmt != NULL) { flg |= XF; break; } tty_warn(1, "Unknown -H format: %s", optarg); (void)fputs("cpio: Known -H formats are:", stderr); for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i) (void)fprintf(stderr, " %s", fsub[i].name); (void)fputs("\n\n", stderr); cpio_usage(); break; case '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 'L': /* * follow symlinks */ Lflag = 1; flg |= CLF; break; #ifdef notyet case 'M': arg = optarg; break; case 'R': arg = optarg; break; #endif case 'S': /* * swap halfwords after reading data */ cpio_swp_head = 1; break; #ifdef notyet case 'V': /* print a '.' for each file processed */ break; #endif case 'V': /* * semi-verbose operation mode (no listing) */ Vflag = 1; flg |= VF; break; case 'Z': /* * use compress. Non standard option. */ gzip_program = COMPRESS_CMD; break; case '6': /* * process Version 6 cpio format */ frmt = &(fsub[F_BCPIO]); break; case OPT_FORCE_LOCAL: forcelocal = 1; break; case OPT_INSECURE: secure = 0; break; case OPT_SPARSE: /* do nothing; we already generate sparse files */ break; case OPT_XZ: gzip_program = XZ_CMD; break; default: cpio_usage(); break; } } /* * figure out the operation mode of cpio. check that we have not been * given a bogus set of flags for the operation mode. */ if (ISLIST(flg)) { act = LIST; bflg = flg & BDLIST; } else if (ISEXTRACT(flg)) { act = EXTRACT; bflg = flg & BDEXTR; } else if (ISARCHIVE(flg)) { act = ARCHIVE; bflg = flg & BDARCH; } else if (ISAPPND(flg)) { act = APPND; bflg = flg & BDARCH; } else if (ISCOPY(flg)) { act = COPY; bflg = flg & BDCOPY; } else cpio_usage(); if (bflg) { cpio_usage(); } /* * if we are writing (ARCHIVE) we use the default format if the user * did not specify a format. when we write during an APPEND, we will * adopt the format of the existing archive if none was supplied. */ if (!(flg & XF) && (act == ARCHIVE)) frmt = &(fsub[F_BCPIO]); /* * process the args as they are interpreted by the operation mode */ switch (act) { case LIST: case EXTRACT: for (; optind < argc; optind++) if (pat_add(argv[optind], NULL, 0) < 0) cpio_usage(); break; case COPY: if (optind >= argc) { tty_warn(0, "Destination directory was not supplied"); cpio_usage(); } --argc; dirptr = argv[argc]; /* FALLTHROUGH */ case ARCHIVE: case APPND: if (argc != optind) { for (; optind < argc; optind++) if (ftree_add(argv[optind], 0) < 0) cpio_usage(); break; } /* * no read errors allowed on updates/append operation! */ maxflt = 0; while ((str = get_line(stdin)) != NULL) { ftree_add(str, 0); } if (get_line_error) { tty_warn(1, "Problem while reading stdin"); cpio_usage(); } break; default: cpio_usage(); break; } } #endif /* * printflg() * print out those invalid flag sets found to the user */ static void printflg(unsigned int flg) { int nxt; (void)fprintf(stderr,"%s: Invalid combination of options:", argv0); while ((nxt = ffs(flg)) != 0) { flg &= ~(1 << (nxt - 1)); (void)fprintf(stderr, " -%c", flgch[nxt - 1]); } (void)putc('\n', stderr); } /* * c_frmt() * comparison routine used by bsearch to find the format specified * by the user */ static int c_frmt(const void *a, const void *b) { return strcmp(((const FSUB *)a)->name, ((const FSUB *)b)->name); } /* * opt_next() * called by format specific options routines to get each format specific * flag and value specified with -o * Return: * pointer to next OPLIST entry or NULL (end of list). */ OPLIST * opt_next(void) { OPLIST *opt; if ((opt = ophead) != NULL) ophead = ophead->fow; return opt; } /* * bad_opt() * generic routine used to complain about a format specific options * when the format does not support options. */ int bad_opt(void) { OPLIST *opt; if (ophead == NULL) return 0; /* * print all we were given */ tty_warn(1," These format options are not supported for %s", frmt->name); while ((opt = opt_next()) != NULL) (void)fprintf(stderr, "\t%s = %s\n", opt->name, opt->value); if (strcmp(NM_TAR, argv0) == 0) tar_usage(); #ifndef NO_CPIO else if (strcmp(NM_CPIO, argv0) == 0) cpio_usage(); #endif else pax_usage(); return 0; } /* * opt_add() * breaks the value supplied to -o into a option name and value. options * are given to -o in the form -o name-value,name=value * multiple -o may be specified. * Return: * 0 if format in name=value format, -1 if -o is passed junk */ int opt_add(const char *str) { OPLIST *opt; char *frpt; char *pt; char *endpt; char *dstr; if ((str == NULL) || (*str == '\0')) { tty_warn(0, "Invalid option name"); return -1; } if ((dstr = strdup(str)) == NULL) { tty_warn(0, "Unable to allocate space for option list"); return -1; } frpt = endpt = dstr; /* * break into name and values pieces and stuff each one into a * OPLIST structure. When we know the format, the format specific * option function will go through this list */ while ((frpt != NULL) && (*frpt != '\0')) { if ((endpt = strchr(frpt, ',')) != NULL) *endpt = '\0'; if ((pt = strchr(frpt, '=')) == NULL) { tty_warn(0, "Invalid options format"); free(dstr); return -1; } if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) { tty_warn(0, "Unable to allocate space for option list"); free(dstr); return -1; } *pt++ = '\0'; opt->name = frpt; opt->value = pt; opt->fow = NULL; if (endpt != NULL) frpt = endpt + 1; else frpt = NULL; if (ophead == NULL) { optail = ophead = opt; continue; } optail->fow = opt; optail = opt; } return 0; } /* * str_offt() * Convert an expression of the following forms to an off_t > 0. * 1) A positive decimal number. * 2) A positive decimal number followed by a b (mult by 512). * 3) A positive decimal number followed by a k (mult by 1024). * 4) A positive decimal number followed by a m (mult by 512). * 5) A positive decimal number followed by a w (mult by sizeof int) * 6) Two or more positive decimal numbers (with/without k,b or w). * separated by x (also * for backwards compatibility), specifying * the product of the indicated values. * Return: * 0 for an error, a positive value o.w. */ static off_t str_offt(char *val) { char *expr; off_t num, t; num = STRTOOFFT(val, &expr, 0); if ((num == OFFT_MAX) || (num <= 0) || (expr == val)) return 0; switch(*expr) { case 'b': t = num; num *= 512; if (t > num) return 0; ++expr; break; case 'k': t = num; num *= 1024; if (t > num) return 0; ++expr; break; case 'm': t = num; num *= 1048576; if (t > num) return 0; ++expr; break; case 'w': t = num; num *= sizeof(int); if (t > num) return 0; ++expr; break; } switch(*expr) { case '\0': break; case '*': case 'x': t = num; num *= str_offt(expr + 1); if (t > num) return 0; break; default: return 0; } return num; } static char * get_line(FILE *f) { char *name, *temp; size_t len; name = fgetln(f, &len); if (!name) { get_line_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0; return 0; } if (name[len-1] != '\n') len++; temp = malloc(len); if (!temp) { get_line_error = GETLINE_OUT_OF_MEM; return 0; } memcpy(temp, name, len-1); temp[len-1] = 0; return temp; } #ifndef SMALL /* * set_tstamp() * Use a specific timestamp for all individual files created in the * archive */ static int set_tstamp(const char *b, struct stat *st) { time_t when; char *eb; long long l; if (stat(b, st) != -1) return 0; #ifndef HAVE_NBTOOL_CONFIG_H errno = 0; if ((when = parsedate(b, NULL, NULL)) == -1 && errno != 0) #endif { errno = 0; l = strtoll(b, &eb, 0); if (b == eb || *eb || errno) return -1; when = (time_t)l; } st->st_ino = 1; #if HAVE_STRUCT_STAT_BIRTHTIME st->st_birthtime = #endif st->st_mtime = st->st_ctime = st->st_atime = when; return 0; } #endif /* * 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 */ static void pax_usage(void) { fprintf(stderr, "usage: pax [-0cdjnvzVO] [-E limit] [-f archive] [-N dbdir] [-s replstr] ...\n" " [-U user] ... [-G group] ... [-T [from_date][,to_date]] ...\n" " [pattern ...]\n"); fprintf(stderr, " pax -r [-cdijknuvzADOVYZ] [-E limit] [-f archive] [-N dbdir]\n" " [-o options] ... [-p string] ... [-s replstr] ... [-U user] ...\n" " [-G group] ... [-T [from_date][,to_date]] ... [pattern ...]\n"); fprintf(stderr, " pax -w [-dijtuvzAHLMOPVX] [-b blocksize] [[-a] [-f archive]] [-x format]\n" " [-B bytes] [-N dbdir] [-o options] ... [-s replstr] ...\n" " [-U user] ... [-G group] ...\n" " [-T [from_date][,to_date][/[c][m]]] ... [file ...]\n"); fprintf(stderr, " pax -r -w [-dijklntuvzADHLMOPVXYZ] [-N dbdir] [-p string] ...\n" " [-s replstr] ... [-U user] ... [-G group] ...\n" " [-T [from_date][,to_date][/[c][m]]] ... [file ...] directory\n"); exit(1); /* NOTREACHED */ } /* * tar_usage() * print the usage summary to the user */ static void tar_usage(void) { (void)fputs("usage: tar [-]{crtux}[-befhjklmopqvwzHJOPSXZ014578] " "[archive] [blocksize]\n" " [-C directory] [-T file] [-s replstr] " "[file ...]\n", stderr); exit(1); /* NOTREACHED */ } #ifndef NO_CPIO /* * cpio_usage() * print the usage summary to the user */ static void cpio_usage(void) { (void)fputs("usage: cpio -o [-aABcLvzZ] [-C bytes] [-F archive] " "[-H format] [-O archive]\n" " < name-list [> archive]\n" " cpio -i [-bBcdfmrsStuvzZ6] [-C bytes] [-E file] " "[-F archive] [-H format] \n" " [-I archive] " "[pattern ...] [< archive]\n" " cpio -p [-adlLmuv] destination-directory " "< name-list\n", stderr); exit(1); /* NOTREACHED */ } #endif