2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - AlcĂ´ve <www.alcove.fr>, 2000
10 * Copyright (c) 1980, 1991, 1993, 1994
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 static const char rcsid[] =
44 "$Id: main.c,v 1.35 2001/03/19 13:22:48 stelian Exp $";
49 #include <compaterr.h>
58 #include <sys/param.h>
61 #include <linux/ext2_fs.h>
62 #include <ext2fs/ext2fs.h>
65 #include <bsdcompat.h>
67 #include <sys/vnode.h>
69 #include <ufs/inode.h>
72 #include <ufs/ufs/dinode.h>
73 #include <ufs/ffs/fs.h>
76 #include <protocols/dumprestore.h>
79 #include "pathnames.h"
83 #define SBOFF (SBLOCK * DEV_BSIZE)
86 int notify = 0; /* notify operator flag */
87 int blockswritten = 0; /* number of blocks written on current tape */
88 int tapeno = 0; /* current tape number */
89 int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */
90 int ntrec = NTREC; /* # tape blocks in each tape record */
91 int cartridge = 0; /* Assume non-cartridge tape */
92 int dokerberos = 0; /* Use Kerberos authentication */
93 long dev_bsize = 1; /* recalculated below */
94 long blocksperfile; /* output blocks per file */
95 char *host = NULL; /* remote host (if any) */
96 int sizest = 0; /* return size estimate only */
97 int compressed = 0; /* use zlib to compress the output */
98 long long bytes_written = 0; /* total bytes written */
99 long uncomprblks = 0;/* uncompressed blocks written */
105 int maxbsize = 64*1024; /* XXX MAXBSIZE from sys/param.h */
106 static long numarg __P((const char *, long, long));
107 static void obsolete __P((int *, char **[]));
108 static void usage __P((void));
110 ino_t iexclude_list[IEXCLUDE_MAXNUM]; /* the inode exclude list */
111 int iexclude_num = 0; /* number of elements in the list */
114 main(int argc, char *argv[])
118 register struct dinode *dp;
119 register struct fstab *dt;
122 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
126 char directory[MAXPATHLEN];
127 char pathname[MAXPATHLEN];
132 spcl.c_label[0] = '\0';
135 (void)time4(&spcl.c_date);
137 (void)time((time_t *)&spcl.c_date);
141 __progname = argv[0];
143 initialize_ext2_error_table();
146 tsize = 0; /* Default later, based on 'c' option for cart tapes */
149 if ((tapeprefix = getenv("TAPE")) == NULL)
150 tapeprefix = _PATH_DEFTAPE;
151 dumpdates = _PATH_DUMPDATES;
152 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
153 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
159 obsolete(&argc, &argv);
161 while ((ch = getopt(argc, argv,
162 "0123456789aB:b:cd:e:f:F:h:L:"
174 case '0': case '1': case '2': case '3': case '4':
175 case '5': case '6': case '7': case '8': case '9':
179 case 'a': /* `auto-size', Write to EOM. */
183 case 'B': /* blocks per output file */
185 blocksperfile = numarg("number of blocks per file",
189 case 'b': /* blocks per tape write */
190 ntrec = numarg("number of blocks per write",
192 if (ntrec > maxbsize/1024) {
193 msg("Please choose a blocksize <= %dKB\n",
200 case 'c': /* Tape is cart. not 9-track */
205 case 'd': /* density, in bits per inch */
207 density = numarg("density", 10L, 327670L) / 10;
208 if (density >= 625 && !bflag)
209 ntrec = HIGHDENSITYTREC;
213 case 'e': /* exclude an inode */
214 if (iexclude_num == IEXCLUDE_MAXNUM) {
215 (void)fprintf(stderr, "Too many -e options\n");
218 iexclude_list[iexclude_num++] = numarg("inode to exclude",0L,0L);
219 if (iexclude_list[iexclude_num-1] <= ROOTINO) {
220 (void)fprintf(stderr, "Cannot exclude inode %ld\n", (long)iexclude_list[iexclude_num-1]);
223 msg("Added %d to exclude list\n",
224 iexclude_list[iexclude_num-1]);
227 case 'f': /* output file */
231 case 'F': /* end of tape script */
236 honorlevel = numarg("honor level", 0L, 10L);
247 * Note that although there are LBLSIZE characters,
248 * the last must be '\0', so the limit on strlen()
249 * is really LBLSIZE-1.
251 strncpy(spcl.c_label, optarg, LBLSIZE);
252 spcl.c_label[LBLSIZE-1] = '\0';
253 if (strlen(optarg) > LBLSIZE-1) {
255 "WARNING Label `%s' is larger than limit of %d characters.\n",
257 msg("WARNING: Using truncated label `%s'.\n",
262 case 'M': /* multi-volume flag */
266 case 'n': /* notify operators */
270 case 's': /* tape size, feet */
272 tsize = numarg("tape size", 1L, 0L) * 12 * 10;
276 sizest = 1; /* return size estimate only */
279 case 'T': /* time of last dump */
280 spcl.c_ddate = unctime(optarg);
281 if (spcl.c_ddate < 0) {
282 (void)fprintf(stderr, "bad time \"%s\"\n",
290 case 'u': /* update dumpdates */
294 case 'W': /* what to do */
297 exit(X_FINOK); /* do nothing else */
302 #endif /* HAVE_ZLIB */
311 (void)fprintf(stderr, "Must specify disk or filesystem\n");
315 if (strlen(diskparam) >= MAXPATHLEN) {
316 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n",
322 (void)fprintf(stderr, "Unknown arguments to dump:");
324 (void)fprintf(stderr, " %s", *argv++);
325 (void)fprintf(stderr, "\n");
328 if (Tflag && uflag) {
329 (void)fprintf(stderr,
330 "You cannot use the T and u flags together.\n");
333 if (strcmp(tapeprefix, "-") == 0) {
335 tapeprefix = "standard output";
339 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
340 else if (!unlimited) {
342 * Determine how to default tape size and density
345 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
346 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
347 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
349 * hilit19 hits again: "
352 density = cartridge ? 100 : 160;
354 tsize = cartridge ? 1700L*120L : 2300L*120L;
357 if (strchr(tapeprefix, ':')) {
359 tapeprefix = strchr(host, ':');
360 *tapeprefix++ = '\0';
362 if (index(tapeprefix, '\n')) {
363 (void)fprintf(stderr, "invalid characters in tape\n");
366 if (rmthost(host) == 0)
369 (void)fprintf(stderr, "remote dump not enabled\n");
373 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
375 if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
377 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
378 signal(SIGTRAP, sig);
379 if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
381 if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
383 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
384 signal(SIGSEGV, sig);
385 if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
386 signal(SIGTERM, sig);
387 if (signal(SIGINT, interrupt) == SIG_IGN)
388 signal(SIGINT, SIG_IGN);
389 set_operators(); /* /etc/group snarfed */
390 getfstab(); /* /etc/fstab snarfed */
393 * disk may end in / and this can confuse
396 i = strlen(diskparam) - 1;
397 if (i > 1 && diskparam[i] == '/')
400 disk = get_device_name(diskparam);
401 if (!disk) { /* null means the disk is some form
402 of LABEL= or UID= but it was not
404 msg("Cannot find a disk having %s\n", diskparam);
408 * disk can be either the full special file name,
409 * the suffix of the special file name,
410 * the special name missing the leading '/',
411 * the file system name with or without the leading '/'.
413 if ((dt = fstabsearch(disk)) != NULL) {
414 disk = rawname(dt->fs_spec);
415 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
416 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
420 if (realpath(disk, pathname) == NULL)
422 strcpy(pathname, disk);
424 * The argument could be now a mountpoint of
425 * a filesystem specified in fstab. Search for it.
427 if ((dt = fstabsearch(pathname)) != NULL) {
428 disk = rawname(dt->fs_spec);
429 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
430 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
433 * The argument was not found in the fstab
434 * assume that this is a subtree and search for it
436 dt = fstabsearchdir(pathname, directory);
438 char name[MAXPATHLEN];
439 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
440 (void)snprintf(name, sizeof(name), "%s (dir %s)",
441 dt->fs_file, directory);
442 (void)strncpy(spcl.c_filesys, name, NAMELEN);
443 disk = rawname(dt->fs_spec);
445 (void)strncpy(spcl.c_dev, disk, NAMELEN);
446 (void)strncpy(spcl.c_filesys, "an unlisted file system",
451 (void)strncpy(spcl.c_dev, disk, NAMELEN);
452 (void)strncpy(spcl.c_filesys, "an unlisted file system",
457 if (directory[0] != 0) {
459 (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
463 (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
467 spcl.c_dev[NAMELEN-1] = '\0';
468 spcl.c_filesys[NAMELEN-1] = '\0';
469 (void)gethostname(spcl.c_host, NAMELEN);
470 spcl.c_host[NAMELEN-1] = '\0';
471 spcl.c_level = level - '0';
472 spcl.c_type = TS_TAPE;
474 getdumptime(uflag); /* dumpdates snarfed */
476 if (spcl.c_ddate == 0 && spcl.c_level) {
477 msg("WARNING: There is no inferior level dump on this filesystem\n");
478 msg("WARNING: Assuming a level 0 dump by default\n");
484 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
486 strncpy(tape, tapeprefix, MAXPATHLEN);
487 tape[MAXPATHLEN - 1] = '\0';
491 msg("Date of this level %c dump: %s", level,
493 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
495 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
497 msg("Date of last level %c dump: %s", lastlevel,
499 spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
501 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
503 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
505 msgtail("to %s on host %s\n", tape, host);
507 msgtail("to %s\n", tape);
508 } /* end of size estimate */
511 retval = dump_fs_open(disk, &fs);
513 com_err(disk, retval, "while opening filesystem");
514 if (retval == EXT2_ET_REV_TOO_HIGH)
515 printf ("Get a newer version of dump!\n");
518 if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
519 com_err(disk, retval, "while opening filesystem");
520 printf ("Get a newer version of dump!\n");
523 if ((diskfd = open(disk, O_RDONLY)) < 0) {
524 msg("Cannot open %s\n", disk);
527 /* if no user label specified, use ext2 filesystem label if available */
528 if (spcl.c_label[0] == '\0') {
530 if ( (lbl = get_device_label(disk)) != NULL) {
531 strncpy(spcl.c_label, lbl, LBLSIZE);
532 spcl.c_label[LBLSIZE-1] = '\0';
535 strcpy(spcl.c_label, "none"); /* safe strcpy. */
538 dev_bsize = DEV_BSIZE;
539 dev_bshift = ffs(dev_bsize) - 1;
540 if (dev_bsize != (1 << dev_bshift))
541 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
542 tp_bshift = ffs(TP_BSIZE) - 1;
543 if (TP_BSIZE != (1 << tp_bshift))
544 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
545 maxino = fs->super->s_inodes_count;
547 spcl.c_flags |= DR_NEWINODEFMT;
549 #else /* __linux __*/
550 if ((diskfd = open(disk, O_RDONLY)) < 0) {
551 msg("Cannot open %s\n", disk);
555 sblock = (struct fs *)sblock_buf;
556 bread(SBOFF, (char *) sblock, SBSIZE);
557 if (sblock->fs_magic != FS_MAGIC)
558 quit("bad sblock magic number\n");
559 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
560 dev_bshift = ffs(dev_bsize) - 1;
561 if (dev_bsize != (1 << dev_bshift))
562 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
563 tp_bshift = ffs(TP_BSIZE) - 1;
564 if (TP_BSIZE != (1 << tp_bshift))
565 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
567 if (sblock->fs_inodefmt >= FS_44INODEFMT)
568 spcl.c_flags |= DR_NEWINODEFMT;
570 maxino = sblock->fs_ipg * sblock->fs_ncg;
571 #endif /* __linux__ */
572 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
573 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
574 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
575 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
576 if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
577 quit("out of memory allocating inode maps\n");
578 tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
580 nonodump = spcl.c_level < honorlevel;
582 msg("Label: %s\n", spcl.c_label);
585 (void)signal(SIGINFO, statussig);
589 msg("mapping (Pass I) [regular files]\n");
591 if (directory[0] == 0)
592 anydirskipped = mapfiles(maxino, &tapesize);
594 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
596 anydirskipped = mapfiles(maxino, &tapesize);
600 msg("mapping (Pass II) [directories]\n");
601 while (anydirskipped) {
602 anydirskipped = mapdirs(maxino, &tapesize);
606 printf("%.0f\n", ((double)tapesize + 11) * TP_BSIZE);
608 } /* stop here for size estimate */
610 if (pipeout || unlimited) {
611 tapesize += 11; /* 10 trailer blocks + 1 map header */
612 msg("estimated %ld tape blocks.\n", tapesize);
617 fetapes = (double) tapesize / blocksperfile;
618 else if (cartridge) {
619 /* Estimate number of tapes, assuming streaming stops at
620 the end of each block written, and not in mid-block.
621 Assume no erroneous blocks; this can be compensated
622 for with an artificially low tape size. */
624 ( (double) tapesize /* blocks */
625 * TP_BSIZE /* bytes/block */
626 * (1.0/density) /* 0.1" / byte " */
628 (double) tapesize /* blocks */
629 * (1.0/ntrec) /* streaming-stops per block */
630 * 15.48 /* 0.1" / streaming-stop " */
631 ) * (1.0 / tsize ); /* tape / 0.1" " */
633 /* Estimate number of tapes, for old fashioned 9-track
635 int tenthsperirg = (density == 625) ? 3 : 7;
637 ( (double) tapesize /* blocks */
638 * TP_BSIZE /* bytes / block */
639 * (1.0/density) /* 0.1" / byte " */
641 (double) tapesize /* blocks */
642 * (1.0/ntrec) /* IRG's / block */
643 * tenthsperirg /* 0.1" / IRG " */
644 ) * (1.0 / tsize ); /* tape / 0.1" " */
646 etapes = fetapes; /* truncating assignment */
648 /* count the dumped inodes map on each additional tape */
649 tapesize += (etapes - 1) *
650 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
651 tapesize += etapes + 10; /* headers + 10 trailer blks */
652 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
657 * Allocate tape buffer.
661 "can't allocate tape buffers - try a smaller blocking factor.\n");
665 (void)time4(&(tstart_writing));
667 (void)time((time_t *)&(tstart_writing));
669 dumpmap(usedinomap, TS_CLRI, maxino - 1);
671 msg("dumping (Pass III) [directories]\n");
672 dirty = 0; /* XXX just to get gcc to shut up */
673 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
674 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
678 if ((dirty & 1) == 0)
681 * Skip directory inodes deleted and maybe reallocated
684 if ((dp->di_mode & IFMT) != IFDIR)
688 * Skip directory inodes deleted and not yes reallocated...
690 if (dp->di_nlink == 0 || dp->di_dtime != 0)
692 (void)dumpdirino(dp, ino);
694 (void)dumpino(dp, ino);
698 msg("dumping (Pass IV) [regular files]\n");
699 for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
700 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
704 if ((dirty & 1) == 0)
707 * Skip inodes deleted and reallocated as directories.
710 if ((dp->di_mode & IFMT) == IFDIR)
714 * No need to check here for deleted and not yes reallocated inodes
715 * since this is done in dumpino().
718 (void)dumpino(dp, ino);
722 (void)time4(&(tend_writing));
724 (void)time((time_t *)&(tend_writing));
726 spcl.c_type = TS_END;
727 for (i = 0; i < ntrec; i++)
728 writeheader(maxino - 1);
733 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
734 ((double)spcl.c_tapea * TP_BSIZE / 1048576));
736 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
738 ((double)spcl.c_tapea * TP_BSIZE / 1048576),
741 /* report dump performance, avoid division through zero */
742 if (tend_writing - tstart_writing == 0)
743 msg("finished in less than a second\n");
745 msg("finished in %d seconds, throughput %d KBytes/sec\n",
746 tend_writing - tstart_writing,
747 spcl.c_tapea / (tend_writing - tstart_writing));
751 msg("Date of this level %c dump: %s", level,
752 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
754 msg("Date of this level %c dump: %s", level,
755 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
757 msg("Date this dump completed: %s", ctime(&tnow));
759 msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno);
761 long tapekb = bytes_written / 1024;
762 double rate = .0005 + (double) spcl.c_tapea / tapekb;
763 msg("Wrote %ldKB uncompressed, %ldKB compressed,"
764 " compression ratio %1.3f\n",
765 spcl.c_tapea, tapekb, rate);
768 broadcast("DUMP IS DONE!\7\7\n");
769 msg("DUMP IS DONE\n");
772 return 0; /* gcc - shut up */
778 char white[MAXPATHLEN];
781 strncpy(white, __progname, MAXPATHLEN-1);
782 white[MAXPATHLEN-1] = '\0';
783 for (i=0; i<MAXPATHLEN; ++i)
784 if (white[i] != '\0') white[i] = ' ';
787 "%s %s\n", __progname, _DUMP_VERSION);
789 "usage:\t%s [-0123456789ac"
797 "] [-B records] [-b blocksize] [-d density]\n"
798 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
799 "\t%s [-W | -w]\n", __progname, white, __progname);
804 * Pick up a numeric argument. It must be nonnegative and in the given
805 * range (except that a vmax of 0 means unlimited).
808 numarg(const char *meaning, long vmin, long vmax)
813 val = strtol(optarg, &p, 10);
815 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
816 if (val < vmin || (vmax && val > vmax))
817 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
832 quit("Signal on pipe: cannot recover\n");
833 msg("Rewriting attempted as response to unknown signal.\n");
834 (void)fflush(stderr);
835 (void)fflush(stdout);
840 msg("SIGSEGV: ABORTING!\n");
841 (void)signal(SIGSEGV, SIG_DFL);
842 (void)kill(0, SIGSEGV);
848 rawname(const char *cp)
852 #else /* __linux__ */
853 static char rawbuf[MAXPATHLEN];
854 char *dp = strrchr(cp, '/');
858 (void)strncpy(rawbuf, cp, min(dp-cp, MAXPATHLEN - 1));
859 rawbuf[min(dp-cp, MAXPATHLEN-1)] = '\0';
860 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
861 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
863 #endif /* __linux__ */
868 * Change set of key letters and ordered arguments into something
869 * getopt(3) will like.
872 obsolete(int *argcp, char **argvp[])
875 char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
881 /* Return if no arguments or first argument has leading dash. */
883 if (argc == 1 || *ap == '-')
886 /* Allocate space for new arguments. */
887 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
888 (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
889 err(X_STARTUP, "malloc new args");
894 for (flags = 0; *ap; ++ap) {
907 warnx("option requires an argument -- %c", *ap);
910 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
911 err(X_STARTUP, "malloc arg");
914 (void)strcpy(&nargv[0][2], *argv);
928 /* Terminate flags. */
934 /* Copy remaining arguments. */
935 while ((*nargv++ = *argv++));
937 /* Update argument count. */
938 *argcp = nargv - *argvp - 1;