2 * Copyright (c) 1992 Keith Muller.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Keith Muller of the University of California, San Diego.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * @(#)options.c 8.2 (Berkeley) 4/18/94
38 * $FreeBSD: src/bin/pax/options.c,v 1.13.2.3 2001/08/01 05:03:11 obrien Exp $
39 * $DragonFly: src/bin/pax/options.c,v 1.9 2008/06/05 18:06:30 swildner Exp $
42 #include <sys/types.h>
59 * Routines which handle command line options
62 static char flgch[] = FLGCH; /* list of all possible flags */
63 static OPLIST *ophead = NULL; /* head for format specific options -x */
64 static OPLIST *optail = NULL; /* option tail */
66 static int no_op (void);
67 static void printflg (unsigned int);
68 static int c_frmt (const void *, const void *);
69 static off_t str_offt (char *);
70 static char *getline (FILE *);
71 static void pax_options (int, char **);
72 static void pax_usage (void);
73 static void tar_options (int, char **);
74 static void tar_usage (void);
75 static void cpio_options (int, char **);
76 static void cpio_usage (void);
77 static int mkpath(char *);
79 /* errors from getline */
80 #define GETLINE_FILE_CORRUPT 1
81 #define GETLINE_OUT_OF_MEM 2
82 static int getline_error;
85 #define GZIP_CMD "gzip" /* command to run as gzip */
86 #define COMPRESS_CMD "compress" /* command to run as compress */
87 #define BZIP2_CMD "bzip2" /* command to run as gzip */
90 * Format specific routine table - MUST BE IN SORTED ORDER BY NAME
91 * (see pax.h for description of each function)
93 * name, blksz, hdsz, udev, hlk, blkagn, inhead, id, st_read,
94 * read, end_read, st_write, write, end_write, trail,
95 * rd_data, wr_data, options
99 /* 0: OLD BINARY CPIO */
100 {"bcpio", 5120, sizeof(HD_BCPIO), 1, 0, 0, 1, bcpio_id, cpio_strd,
101 bcpio_rd, bcpio_endrd, cpio_stwr, bcpio_wr, cpio_endwr, cpio_trail,
102 rd_wrfile, wr_rdfile, bad_opt},
104 /* 1: OLD OCTAL CHARACTER CPIO */
105 {"cpio", 5120, sizeof(HD_CPIO), 1, 0, 0, 1, cpio_id, cpio_strd,
106 cpio_rd, cpio_endrd, cpio_stwr, cpio_wr, cpio_endwr, cpio_trail,
107 rd_wrfile, wr_rdfile, bad_opt},
109 /* 2: SVR4 HEX CPIO */
110 {"sv4cpio", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, vcpio_id, cpio_strd,
111 vcpio_rd, vcpio_endrd, cpio_stwr, vcpio_wr, cpio_endwr, cpio_trail,
112 rd_wrfile, wr_rdfile, bad_opt},
114 /* 3: SVR4 HEX CPIO WITH CRC */
115 {"sv4crc", 5120, sizeof(HD_VCPIO), 1, 0, 0, 1, crc_id, crc_strd,
116 vcpio_rd, vcpio_endrd, crc_stwr, vcpio_wr, cpio_endwr, cpio_trail,
117 rd_wrfile, wr_rdfile, bad_opt},
120 {"tar", 10240, BLKMULT, 0, 1, BLKMULT, 0, tar_id, no_op,
121 tar_rd, tar_endrd, no_op, tar_wr, tar_endwr, tar_trail,
122 rd_wrfile, wr_rdfile, tar_opt},
125 {"ustar", 10240, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, ustar_strd,
126 ustar_rd, tar_endrd, ustar_stwr, ustar_wr, tar_endwr, tar_trail,
127 rd_wrfile, wr_rdfile, bad_opt},
129 #define F_OCPIO 0 /* format when called as cpio -6 */
130 #define F_ACPIO 1 /* format when called as cpio -c */
131 #define F_CPIO 3 /* format when called as cpio */
132 #define F_OTAR 4 /* format when called as tar -o */
133 #define F_TAR 5 /* format when called as tar */
134 #define DEFLT 5 /* default write format from list above */
137 * ford is the archive search order used by get_arc() to determine what kind
138 * of archive we are dealing with. This helps to properly id archive formats
139 * some formats may be subsets of others....
141 int ford[] = {5, 4, 3, 2, 1, 0, -1 };
145 * figure out if we are pax, tar or cpio. Call the appropriate options
150 options(int argc, char **argv)
154 * Are we acting like pax, tar or cpio (based on argv[0])
156 if ((argv0 = strrchr(argv[0], '/')) != NULL)
161 if (strcmp(NM_TAR, argv0) == 0)
162 return(tar_options(argc, argv));
163 else if (strcmp(NM_CPIO, argv0) == 0)
164 return(cpio_options(argc, argv));
166 * assume pax as the default
169 return(pax_options(argc, argv));
174 * look at the user specified flags. set globals as required and check if
175 * the user specified a legal set of flags. If not, complain and exit
179 pax_options(int argc, char **argv)
183 unsigned int flg = 0;
184 unsigned int bflg = 0;
189 * process option flags
191 while ((c=getopt(argc,argv,"ab:cdf:iklno:p:rs:tuvwx:zB:DE:G:HLOPT:U:XYZ"))
205 if ((wrblksz = (int)str_offt(optarg)) <= 0) {
206 paxwarn(1, "Invalid block size %s", optarg);
212 * inverse match on patterns
219 * match only dir on extract, not the subtree at dir
226 * filename where the archive is stored
233 * interactive file rename
240 * do not clobber files that exist
247 * try to link src to dest with copy (-rw)
254 * select first match for a pattern only
261 * pass format specific options
264 if (opt_add(optarg) < 0)
269 * specify file characteristic options
271 for (pt = optarg; *pt != '\0'; ++pt) {
275 * do not preserve access time
281 * preserve user id, group id, file
282 * mode, access/modification times
291 * do not preserve modification time
303 * preserve file mode bits
308 paxwarn(1, "Invalid -p string: %c", *pt);
323 * file name substitution name pattern
325 if (rep_add(optarg) < 0) {
333 * preserve access time on filesystem nodes we read
340 * ignore those older files
347 * verbose operation mode
360 * specify an archive format on write
363 if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
364 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL) {
368 paxwarn(1, "Unknown -x format: %s", optarg);
369 fputs("pax: Known -x formats are:", stderr);
370 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
371 fprintf(stderr, " %s", fsub[i].name);
372 fputs("\n\n", stderr);
377 * use gzip. Non standard option.
379 gzip_program = GZIP_CMD;
383 * non-standard option on number of bytes written on a
384 * single archive volume.
386 if ((wrlimit = str_offt(optarg)) <= 0) {
387 paxwarn(1, "Invalid write limit %s", optarg);
390 if (wrlimit % BLKMULT) {
391 paxwarn(1, "Write limit is not a %d byte multiple",
399 * On extraction check file inode change time before the
400 * modification of the file name. Non standard option.
407 * non-standard limit on read faults
408 * 0 indicates stop after first error, values
409 * indicate a limit, "NONE" try forever
412 if (strcmp(NONE, optarg) == 0)
414 else if ((maxflt = atoi(optarg)) < 0) {
415 paxwarn(1, "Error count value must be positive");
421 * non-standard option for selecting files within an
422 * archive by group (gid or name)
424 if (grp_add(optarg) < 0) {
432 * follow command line symlinks only
446 * Force one volume. Non standard option.
448 force_one_volume = 1;
452 * do NOT follow symlinks (default)
459 * non-standard option for selecting files within an
460 * archive by modification time range (lower,upper)
462 if (trng_add(optarg) < 0) {
470 * non-standard option for selecting files within an
471 * archive by user (uid or name)
473 if (usr_add(optarg) < 0) {
481 * do not pass over mount points in the file system
488 * On extraction check file inode change time after the
489 * modification of the file name. Non standard option.
496 * On extraction check modification time after the
497 * modification of the file name. Non standard option.
509 * figure out the operation mode of pax read,write,extract,copy,append
510 * or list. check that we have not been given a bogus set of flags
511 * for the operation mode.
517 } else if (ISEXTRACT(flg)) {
520 } else if (ISARCHIVE(flg)) {
523 } else if (ISAPPND(flg)) {
526 } else if (ISCOPY(flg)) {
537 * if we are writing (ARCHIVE) we use the default format if the user
538 * did not specify a format. when we write during an APPEND, we will
539 * adopt the format of the existing archive if none was supplied.
541 if (!(flg & XF) && (act == ARCHIVE))
542 frmt = &(fsub[DEFLT]);
545 * process the args as they are interpreted by the operation mode
550 for (; optind < argc; optind++)
551 if (pat_add(argv[optind], NULL) < 0)
555 if (optind >= argc) {
556 paxwarn(0, "Destination directory was not supplied");
561 if (mkpath(dirptr) < 0)
566 for (; optind < argc; optind++)
567 if (ftree_add(argv[optind], 0) < 0)
570 * no read errors allowed on updates/append operation!
580 * look at the user specified flags. set globals as required and check if
581 * the user specified a legal set of flags. If not, complain and exit
585 tar_options(int argc, char **argv)
591 int incfiles_max = 0;
596 struct incfile *incfiles = NULL;
599 * Set default values.
604 * process option flags
606 while ((c = getoldopt(argc, argv,
607 "b:cef:hjmopqruts:vwxyzBC:HI:LOPXZ014578")) != -1) {
611 * specify blocksize in 512-byte blocks
613 if ((wrblksz = (int)str_offt(optarg)) <= 0) {
614 paxwarn(1, "Invalid block size %s", optarg);
617 wrblksz *= 512; /* XXX - check for int oflow */
627 * stop after first error
633 * filename where the archive is stored
635 if ((optarg[0] == '-') && (optarg[1]== '\0')) {
655 * use bzip2. Non standard option.
657 gzip_program = BZIP2_CMD;
661 * do not preserve modification time
666 if (opt_add("write_opt=nodir") < 0)
673 * preserve uid/gid and file mode, regardless of umask
680 * select first match for a pattern only
687 * append to the archive
693 * file name substitution name pattern
695 if (rep_add(optarg) < 0) {
702 * list contents of the tape
708 * verbose operation mode
714 * interactive file rename
720 * extract an archive, preserving mode,
721 * and mtime if possible.
728 * use gzip. Non standard option.
730 gzip_program = GZIP_CMD;
734 * Nothing to do here, this is pax default
742 * follow command line symlinks only
747 if (++nincfiles > incfiles_max) {
748 incfiles_max = nincfiles + 3;
749 incfiles = realloc(incfiles,
750 sizeof(*incfiles) * incfiles_max);
751 if (incfiles == NULL) {
752 paxwarn(0, "Unable to allocate space "
757 incfiles[nincfiles - 1].file = optarg;
758 incfiles[nincfiles - 1].dir = chdname;
768 * do not remove leading '/' from pathnames
774 * do not pass over mount points in the file system
782 gzip_program = COMPRESS_CMD;
810 /* Traditional tar behaviour (pax uses stderr unless in list mode) */
811 if (fstdin == 1 && act == ARCHIVE)
816 /* Traditional tar behaviour (pax wants to read file list from stdin) */
817 if ((act == ARCHIVE || act == APPND) && argc == 0 && nincfiles == 0)
821 * if we are writing (ARCHIVE) specify tar, otherwise run like pax
822 * (unless -o specified)
824 if (act == ARCHIVE || act == APPND)
825 frmt = &(fsub[Oflag ? F_OTAR : F_TAR]);
827 paxwarn(1, "The -O/-o options are only valid when writing an archive");
828 tar_usage(); /* only valid when writing */
832 * process the args as they are interpreted by the operation mode
840 char *file, *dir = NULL;
842 while (nincfiles || *argv != NULL) {
844 * If we queued up any include files,
845 * pull them in now. Otherwise, check
846 * for -I and -C positional flags.
847 * Anything else must be a file to
851 file = incfiles->file;
855 } else if (strcmp(*argv, "-I") == 0) {
866 if (strcmp(file, "-") == 0)
868 else if ((fp = fopen(file, "r")) == NULL) {
869 paxwarn(1, "Unable to open file '%s' for read", file);
872 while ((str = getline(fp)) != NULL) {
873 if (pat_add(str, dir) < 0)
877 if (strcmp(file, "-") != 0)
880 paxwarn(1, "Problem with file '%s'", file);
883 } else if (strcmp(*argv, "-C") == 0) {
887 } else if (pat_add(*argv++, chdname) < 0)
893 * if patterns were added, we are doing chdir()
894 * on a file-by-file basis, else, just one
895 * global chdir (if any) after opening input.
903 if (chdname != NULL) { /* initial chdir() */
904 if (ftree_add(chdname, 1) < 0)
908 while (nincfiles || *argv != NULL) {
909 char *file, *dir = NULL;
912 * If we queued up any include files, pull them in
913 * now. Otherwise, check for -I and -C positional
914 * flags. Anything else must be a file to include
918 file = incfiles->file;
922 } else if (strcmp(*argv, "-I") == 0) {
933 /* Set directory if needed */
935 if (ftree_add(dir, 1) < 0)
939 if (strcmp(file, "-") == 0)
941 else if ((fp = fopen(file, "r")) == NULL) {
942 paxwarn(1, "Unable to open file '%s' for read", file);
945 while ((str = getline(fp)) != NULL) {
946 if (ftree_add(str, 0) < 0)
949 if (strcmp(file, "-") != 0)
952 paxwarn(1, "Problem with file '%s'",
956 } else if (strcmp(*argv, "-C") == 0) {
959 if (ftree_add(*argv++, 1) < 0)
961 } else if (ftree_add(*argv++, 0) < 0)
965 * no read errors allowed on updates/append operation!
970 if (!fstdin && ((arcname == NULL) || (*arcname == '\0'))) {
971 arcname = getenv("TAPE");
972 if ((arcname == NULL) || (*arcname == '\0'))
973 arcname = _PATH_DEFTAPE;
987 slash += strspn(slash, "/");
988 slash += strcspn(slash, "/");
990 done = (*slash == '\0');
993 if (stat(path, &sb)) {
994 if (errno != ENOENT || mkdir(path, 0777)) {
995 paxwarn(1, "%s", path);
998 } else if (!S_ISDIR(sb.st_mode)) {
999 syswarn(1, ENOTDIR, "%s", path);
1011 * look at the user specified flags. set globals as required and check if
1012 * the user specified a legal set of flags. If not, complain and exit
1016 cpio_options(int argc, char **argv)
1031 while ((c=getopt(argc,argv,"abcdfiklmoprstuvzABC:E:F:H:I:LO:SZ6")) != -1)
1035 * preserve access time on files read
1041 * swap bytes and half-words when reading data
1048 frmt = &(fsub[F_ACPIO]);
1052 * create directories as needed
1058 * invert meaning of pattern list
1064 * restore an archive
1072 * use links instead of copies when possible
1078 * preserve modification time
1087 frmt = &(fsub[F_CPIO]);
1097 * interactively rename files
1103 * swap bytes after reading data
1108 * list contents of archive
1115 * replace newer files
1121 * verbose operation mode
1127 * use gzip. Non standard option.
1129 gzip_program = GZIP_CMD;
1139 * Use 5120 byte block size
1145 * set block size in bytes
1147 wrblksz = atoi(optarg);
1151 * file with patterns to extract or list
1153 if ((fp = fopen(optarg, "r")) == NULL) {
1154 paxwarn(1, "Unable to open file '%s' for read", optarg);
1157 while ((str = getline(fp)) != NULL) {
1161 if (getline_error) {
1162 paxwarn(1, "Problem with file '%s'", optarg);
1170 * filename where the archive is stored
1172 if ((optarg[0] == '-') && (optarg[1]== '\0')) {
1174 * treat a - as stdin
1183 * specify an archive format on write
1186 if ((frmt = (FSUB *)bsearch((void *)&tmp, (void *)fsub,
1187 sizeof(fsub)/sizeof(FSUB), sizeof(FSUB), c_frmt)) != NULL)
1189 paxwarn(1, "Unknown -H format: %s", optarg);
1190 fputs("cpio: Known -H formats are:", stderr);
1191 for (i = 0; i < (sizeof(fsub)/sizeof(FSUB)); ++i)
1192 fprintf(stderr, " %s", fsub[i].name);
1193 fputs("\n\n", stderr);
1198 * follow symbolic links
1204 * swap halfwords after reading data
1209 * use compress. Non standard option.
1211 gzip_program = COMPRESS_CMD;
1215 * process Version 6 cpio format
1217 frmt = &(fsub[F_OCPIO]);
1228 * process the args as they are interpreted by the operation mode
1233 while (*argv != NULL)
1234 if (pat_add(*argv++, NULL) < 0)
1238 if (*argv == NULL) {
1239 paxwarn(0, "Destination directory was not supplied");
1243 if (mkpath(dirptr) < 0)
1253 * no read errors allowed on updates/append operation!
1256 while ((str = getline(stdin)) != NULL) {
1259 if (getline_error) {
1260 paxwarn(1, "Problem while reading stdin");
1272 * print out those invalid flag sets found to the user
1276 printflg(unsigned int flg)
1281 fprintf(stderr,"%s: Invalid combination of options:", argv0);
1282 while ((nxt = ffs(flg)) != 0) {
1285 fprintf(stderr, " -%c", flgch[pos-1]);
1292 * comparison routine used by bsearch to find the format specified
1297 c_frmt(const void *a, const void *b)
1299 return(strcmp(((FSUB *)a)->name, ((FSUB *)b)->name));
1304 * called by format specific options routines to get each format specific
1305 * flag and value specified with -o
1307 * pointer to next OPLIST entry or NULL (end of list).
1315 if ((opt = ophead) != NULL)
1316 ophead = ophead->fow;
1322 * generic routine used to complain about a format specific options
1323 * when the format does not support options.
1334 * print all we were given
1336 paxwarn(1,"These format options are not supported");
1337 while ((opt = opt_next()) != NULL)
1338 fprintf(stderr, "\t%s = %s\n", opt->name, opt->value);
1345 * breaks the value supplied to -o into a option name and value. options
1346 * are given to -o in the form -o name-value,name=value
1347 * multiple -o may be specified.
1349 * 0 if format in name=value format, -1 if -o is passed junk
1360 if ((str == NULL) || (*str == '\0')) {
1361 paxwarn(0, "Invalid option name");
1364 if ((str = strdup(str)) == NULL) {
1365 paxwarn(0, "Unable to allocate space for option list");
1371 * break into name and values pieces and stuff each one into a
1372 * OPLIST structure. When we know the format, the format specific
1373 * option function will go through this list
1375 while ((frpt != NULL) && (*frpt != '\0')) {
1376 if ((endpt = strchr(frpt, ',')) != NULL)
1378 if ((pt = strchr(frpt, '=')) == NULL) {
1379 paxwarn(0, "Invalid options format");
1383 if ((opt = (OPLIST *)malloc(sizeof(OPLIST))) == NULL) {
1384 paxwarn(0, "Unable to allocate space for option list");
1396 if (ophead == NULL) {
1397 optail = ophead = opt;
1408 * Convert an expression of the following forms to an off_t > 0.
1409 * 1) A positive decimal number.
1410 * 2) A positive decimal number followed by a b (mult by 512).
1411 * 3) A positive decimal number followed by a k (mult by 1024).
1412 * 4) A positive decimal number followed by a m (mult by 512).
1413 * 5) A positive decimal number followed by a w (mult by sizeof int)
1414 * 6) Two or more positive decimal numbers (with/without k,b or w).
1415 * separated by x (also * for backwards compatibility), specifying
1416 * the product of the indicated values.
1418 * 0 for an error, a positive value o.w.
1427 num = strtoq(val, &expr, 0);
1428 if ((num == QUAD_MAX) || (num <= 0) || (expr == val))
1468 num *= str_offt(expr + 1);
1484 name = fgetln(f, &len);
1486 getline_error = ferror(f) ? GETLINE_FILE_CORRUPT : 0;
1489 if (name[len-1] != '\n')
1493 getline_error = GETLINE_OUT_OF_MEM;
1496 memcpy(temp, name, len-1);
1503 * for those option functions where the archive format has nothing to do.
1516 * print the usage summary to the user
1522 fputs("usage: pax [-cdnvz] [-E limit] [-f archive] ", stderr);
1523 fputs("[-s replstr] ... [-U user] ...", stderr);
1524 fputs("\n [-G group] ... ", stderr);
1525 fputs("[-T [from_date][,to_date]] ... ", stderr);
1526 fputs("[pattern ...]\n", stderr);
1527 fputs(" pax -r [-cdiknuvzDYZ] [-E limit] ", stderr);
1528 fputs("[-f archive] [-o options] ... \n", stderr);
1529 fputs(" [-p string] ... [-s replstr] ... ", stderr);
1530 fputs("[-U user] ... [-G group] ...\n ", stderr);
1531 fputs("[-T [from_date][,to_date]] ... ", stderr);
1532 fputs(" [pattern ...]\n", stderr);
1533 fputs(" pax -w [-dituvzHLPX] [-b blocksize] ", stderr);
1534 fputs("[ [-a] [-f archive] ] [-x format] \n", stderr);
1535 fputs(" [-B bytes] [-s replstr] ... ", stderr);
1536 fputs("[-o options] ... [-U user] ...", stderr);
1537 fputs("\n [-G group] ... ", stderr);
1538 fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);
1539 fputs("[file ...]\n", stderr);
1540 fputs(" pax -r -w [-diklntuvDHLPXYZ] ", stderr);
1541 fputs("[-p string] ... [-s replstr] ...", stderr);
1542 fputs("\n [-U user] ... [-G group] ... ", stderr);
1543 fputs("[-T [from_date][,to_date][/[c][m]]] ... ", stderr);
1544 fputs("\n [file ...] directory\n", stderr);
1550 * print the usage summary to the user
1556 fputs("usage: tar [-]{crtux}[-befhjmopqsvwyzHLOPXZ014578] [blocksize] ",
1558 fputs("[archive] [replstr] [-C directory] [-I file] [file ...]\n",
1565 * print the usage summary to the user
1571 fputs("usage: cpio -o [-aABcLvVzZ] [-C bytes] [-H format] [-O archive]\n", stderr);
1572 fputs(" [-F archive] < name-list [> archive]\n", stderr);
1573 fputs(" cpio -i [-bBcdfmnrsStuvVzZ6] [-C bytes] [-E file] [-H format]\n", stderr);
1574 fputs(" [-I archive] [-F archive] [pattern...] [< archive]\n", stderr);
1575 fputs(" cpio -p [-adlLmuvV] destination-directory < name-list\n", stderr);