774 lines
20 KiB
C
774 lines
20 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1980, 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1991, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include <sys/disklabel.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/ufsmount.h>
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#include <ufs/ffs/fs.h>
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#include <protocols/dumprestore.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fstab.h>
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#include <libufs.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <timeconv.h>
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#include <unistd.h>
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#include "dump.h"
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#include "pathnames.h"
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int notify = 0; /* notify operator flag */
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int snapdump = 0; /* dumping live filesystem, so use snapshot */
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int blockswritten = 0; /* number of blocks written on current tape */
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int tapeno = 0; /* current tape number */
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int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */
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int ntrec = NTREC; /* # tape blocks in each tape record */
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int cartridge = 0; /* Assume non-cartridge tape */
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int cachesize = 0; /* block cache size (in bytes), defaults to 0 */
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long dev_bsize = 1; /* recalculated below */
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long blocksperfile; /* output blocks per file */
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char *host = NULL; /* remote host (if any) */
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static char *getmntpt(char *, int *);
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static long numarg(const char *, long, long);
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static void obsolete(int *, char **[]);
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static void usage(void) __dead2;
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int
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main(int argc, char *argv[])
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{
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struct stat sb;
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ino_t ino;
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int dirty;
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union dinode *dp;
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struct fstab *dt;
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char *map, *mntpt;
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int ch, mode, mntflags;
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int i, ret, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
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int just_estimate = 0;
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ino_t maxino;
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char *tmsg;
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spcl.c_date = _time_to_time64(time(NULL));
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tsize = 0; /* Default later, based on 'c' option for cart tapes */
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dumpdates = _PATH_DUMPDATES;
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popenout = NULL;
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tape = NULL;
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temp = _PATH_DTMP;
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if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
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quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
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level = 0;
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rsync_friendly = 0;
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if (argc < 2)
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usage();
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obsolete(&argc, &argv);
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while ((ch = getopt(argc, argv,
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"0123456789aB:b:C:cD:d:f:h:LnP:RrSs:T:uWw")) != -1)
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switch (ch) {
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/* dump level */
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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level = 10 * level + ch - '0';
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break;
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case 'a': /* `auto-size', Write to EOM. */
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unlimited = 1;
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break;
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case 'B': /* blocks per output file */
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blocksperfile = numarg("number of blocks per file",
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1L, 0L);
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break;
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case 'b': /* blocks per tape write */
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ntrec = numarg("number of blocks per write",
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1L, 1000L);
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break;
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case 'C':
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cachesize = numarg("cachesize", 0, 0) * 1024 * 1024;
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break;
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case 'c': /* Tape is cart. not 9-track */
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cartridge = 1;
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break;
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case 'D':
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dumpdates = optarg;
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break;
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case 'd': /* density, in bits per inch */
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density = numarg("density", 10L, 327670L) / 10;
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if (density >= 625 && !bflag)
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ntrec = HIGHDENSITYTREC;
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break;
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case 'f': /* output file */
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if (popenout != NULL)
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errx(X_STARTUP, "You cannot use the P and f "
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"flags together.\n");
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tape = optarg;
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break;
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case 'h':
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honorlevel = numarg("honor level", 0L, 10L);
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break;
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case 'L':
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snapdump = 1;
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break;
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case 'n': /* notify operators */
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notify = 1;
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break;
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case 'P':
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if (tape != NULL)
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errx(X_STARTUP, "You cannot use the P and f "
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"flags together.\n");
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popenout = optarg;
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break;
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case 'r': /* store slightly less data to be friendly to rsync */
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if (rsync_friendly < 1)
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rsync_friendly = 1;
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break;
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case 'R': /* store even less data to be friendlier to rsync */
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if (rsync_friendly < 2)
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rsync_friendly = 2;
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break;
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case 'S': /* exit after estimating # of tapes */
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just_estimate = 1;
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break;
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case 's': /* tape size, feet */
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tsize = numarg("tape size", 1L, 0L) * 12 * 10;
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break;
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case 'T': /* time of last dump */
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spcl.c_ddate = unctime(optarg);
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if (spcl.c_ddate < 0) {
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(void)fprintf(stderr, "bad time \"%s\"\n",
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optarg);
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exit(X_STARTUP);
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}
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Tflag = 1;
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lastlevel = -1;
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break;
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case 'u': /* update /etc/dumpdates */
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uflag = 1;
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break;
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case 'W': /* what to do */
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case 'w':
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lastdump(ch);
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exit(X_FINOK); /* do nothing else */
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc < 1) {
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(void)fprintf(stderr, "Must specify disk or file system\n");
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exit(X_STARTUP);
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}
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disk = *argv++;
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argc--;
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if (argc >= 1) {
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(void)fprintf(stderr, "Unknown arguments to dump:");
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while (argc--)
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(void)fprintf(stderr, " %s", *argv++);
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(void)fprintf(stderr, "\n");
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exit(X_STARTUP);
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}
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if (rsync_friendly && (level > 0)) {
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(void)fprintf(stderr, "%s %s\n", "rsync friendly options",
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"can be used only with level 0 dumps.");
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exit(X_STARTUP);
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}
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if (Tflag && uflag) {
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(void)fprintf(stderr,
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"You cannot use the T and u flags together.\n");
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exit(X_STARTUP);
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}
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if (popenout) {
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tape = "child pipeline process";
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} else if (tape == NULL && (tape = getenv("TAPE")) == NULL)
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tape = _PATH_DEFTAPE;
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if (strcmp(tape, "-") == 0) {
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pipeout++;
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tape = "standard output";
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}
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if (blocksperfile)
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blocksperfile = rounddown(blocksperfile, ntrec);
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else if (!unlimited) {
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/*
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* Determine how to default tape size and density
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*
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* density tape size
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* 9-track 1600 bpi (160 bytes/.1") 2300 ft.
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* 9-track 6250 bpi (625 bytes/.1") 2300 ft.
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* cartridge 8000 bpi (100 bytes/.1") 1700 ft.
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* (450*4 - slop)
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* hilit19 hits again: "
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*/
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if (density == 0)
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density = cartridge ? 100 : 160;
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if (tsize == 0)
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tsize = cartridge ? 1700L*120L : 2300L*120L;
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}
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if (strchr(tape, ':')) {
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host = tape;
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tape = strchr(host, ':');
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*tape++ = '\0';
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#ifdef RDUMP
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if (strchr(tape, '\n')) {
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(void)fprintf(stderr, "invalid characters in tape\n");
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exit(X_STARTUP);
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}
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if (rmthost(host) == 0)
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exit(X_STARTUP);
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#else
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(void)fprintf(stderr, "remote dump not enabled\n");
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exit(X_STARTUP);
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#endif
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}
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(void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
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if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
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signal(SIGHUP, sig);
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if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
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signal(SIGTRAP, sig);
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if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
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signal(SIGFPE, sig);
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if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
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signal(SIGBUS, sig);
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if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
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signal(SIGSEGV, sig);
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if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
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signal(SIGTERM, sig);
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if (signal(SIGINT, interrupt) == SIG_IGN)
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signal(SIGINT, SIG_IGN);
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dump_getfstab(); /* /etc/fstab snarfed */
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/*
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* disk can be either the full special file name,
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* the suffix of the special file name,
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* the special name missing the leading '/',
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* the file system name with or without the leading '/'.
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*/
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dt = fstabsearch(disk);
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if (dt != NULL) {
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disk = rawname(dt->fs_spec);
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if (disk == NULL)
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errx(X_STARTUP, "%s: unknown file system", dt->fs_spec);
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(void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
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(void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
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} else {
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(void)strncpy(spcl.c_dev, disk, NAMELEN);
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(void)strncpy(spcl.c_filesys, "an unlisted file system",
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NAMELEN);
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}
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spcl.c_dev[NAMELEN-1]='\0';
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spcl.c_filesys[NAMELEN-1]='\0';
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if ((mntpt = getmntpt(disk, &mntflags)) != NULL) {
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if (mntflags & MNT_RDONLY) {
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if (snapdump != 0) {
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msg("WARNING: %s\n",
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"-L ignored for read-only filesystem.");
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snapdump = 0;
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}
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} else if (snapdump == 0) {
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msg("WARNING: %s\n",
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"should use -L when dumping live read-write "
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"filesystems!");
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} else {
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char snapname[BUFSIZ], snapcmd[BUFSIZ];
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snprintf(snapname, sizeof snapname, "%s/.snap", mntpt);
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if ((stat(snapname, &sb) < 0) || !S_ISDIR(sb.st_mode)) {
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msg("WARNING: %s %s\n",
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"-L requested but snapshot location",
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snapname);
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msg(" %s: %s\n",
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"is not a directory",
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"dump downgraded, -L ignored");
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snapdump = 0;
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} else {
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snprintf(snapname, sizeof snapname,
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"%s/.snap/dump_snapshot", mntpt);
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snprintf(snapcmd, sizeof snapcmd, "%s %s %s",
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_PATH_MKSNAP_FFS, mntpt, snapname);
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unlink(snapname);
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if (system(snapcmd) != 0)
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errx(X_STARTUP, "Cannot create %s: %s\n",
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snapname, strerror(errno));
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if ((diskfd = open(snapname, O_RDONLY)) < 0) {
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unlink(snapname);
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errx(X_STARTUP, "Cannot open %s: %s\n",
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snapname, strerror(errno));
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}
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unlink(snapname);
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if (fstat(diskfd, &sb) != 0)
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err(X_STARTUP, "%s: stat", snapname);
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spcl.c_date = _time_to_time64(sb.st_mtime);
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}
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}
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} else if (snapdump != 0) {
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msg("WARNING: Cannot use -L on an unmounted filesystem.\n");
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snapdump = 0;
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}
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if (snapdump == 0) {
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if ((diskfd = open(disk, O_RDONLY)) < 0)
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err(X_STARTUP, "Cannot open %s", disk);
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if (fstat(diskfd, &sb) != 0)
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err(X_STARTUP, "%s: stat", disk);
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if (S_ISDIR(sb.st_mode))
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errx(X_STARTUP, "%s: unknown file system", disk);
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}
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(void)strcpy(spcl.c_label, "none");
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(void)gethostname(spcl.c_host, NAMELEN);
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spcl.c_level = level;
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spcl.c_type = TS_TAPE;
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if (rsync_friendly) {
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/* don't store real dump times */
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spcl.c_date = 0;
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spcl.c_ddate = 0;
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}
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if (spcl.c_date == 0) {
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tmsg = "the epoch\n";
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} else {
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time_t t = _time64_to_time(spcl.c_date);
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tmsg = ctime(&t);
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}
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msg("Date of this level %d dump: %s", level, tmsg);
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if (!Tflag && (!rsync_friendly))
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getdumptime(); /* /etc/dumpdates snarfed */
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if (spcl.c_ddate == 0) {
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tmsg = "the epoch\n";
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} else {
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time_t t = _time64_to_time(spcl.c_ddate);
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tmsg = ctime(&t);
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}
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if (lastlevel < 0)
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msg("Date of last (level unknown) dump: %s", tmsg);
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else
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msg("Date of last level %d dump: %s", lastlevel, tmsg);
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msg("Dumping %s%s ", snapdump ? "snapshot of ": "", disk);
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if (dt != NULL)
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msgtail("(%s) ", dt->fs_file);
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if (host)
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msgtail("to %s on host %s\n", tape, host);
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else
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msgtail("to %s\n", tape);
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sync();
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if ((ret = sbget(diskfd, &sblock, -1)) != 0) {
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switch (ret) {
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case ENOENT:
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warn("Cannot find file system superblock");
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return (1);
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default:
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warn("Unable to read file system superblock");
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return (1);
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}
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}
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dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
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dev_bshift = ffs(dev_bsize) - 1;
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if (dev_bsize != (1 << dev_bshift))
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quit("dev_bsize (%ld) is not a power of 2", dev_bsize);
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tp_bshift = ffs(TP_BSIZE) - 1;
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if (TP_BSIZE != (1 << tp_bshift))
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quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
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maxino = sblock->fs_ipg * sblock->fs_ncg;
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mapsize = roundup(howmany(maxino, CHAR_BIT), TP_BSIZE);
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usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
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dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
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dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
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tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
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nonodump = spcl.c_level < honorlevel;
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passno = 1;
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setproctitle("%s: pass 1: regular files", disk);
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msg("mapping (Pass I) [regular files]\n");
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anydirskipped = mapfiles(maxino, &tapesize);
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passno = 2;
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setproctitle("%s: pass 2: directories", disk);
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msg("mapping (Pass II) [directories]\n");
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while (anydirskipped) {
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anydirskipped = mapdirs(maxino, &tapesize);
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}
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if (pipeout || unlimited) {
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tapesize += 10; /* 10 trailer blocks */
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msg("estimated %ld tape blocks.\n", tapesize);
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} else {
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double fetapes;
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if (blocksperfile)
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fetapes = (double) tapesize / blocksperfile;
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else if (cartridge) {
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/* Estimate number of tapes, assuming streaming stops at
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the end of each block written, and not in mid-block.
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Assume no erroneous blocks; this can be compensated
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for with an artificially low tape size. */
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fetapes =
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( (double) tapesize /* blocks */
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* TP_BSIZE /* bytes/block */
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* (1.0/density) /* 0.1" / byte " */
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+
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(double) tapesize /* blocks */
|
|
* (1.0/ntrec) /* streaming-stops per block */
|
|
* 15.48 /* 0.1" / streaming-stop " */
|
|
) * (1.0 / tsize ); /* tape / 0.1" " */
|
|
} else {
|
|
/* Estimate number of tapes, for old fashioned 9-track
|
|
tape */
|
|
int tenthsperirg = (density == 625) ? 3 : 7;
|
|
fetapes =
|
|
( (double) tapesize /* blocks */
|
|
* TP_BSIZE /* bytes / block */
|
|
* (1.0/density) /* 0.1" / byte " */
|
|
+
|
|
(double) tapesize /* blocks */
|
|
* (1.0/ntrec) /* IRG's / block */
|
|
* tenthsperirg /* 0.1" / IRG " */
|
|
) * (1.0 / tsize ); /* tape / 0.1" " */
|
|
}
|
|
etapes = fetapes; /* truncating assignment */
|
|
etapes++;
|
|
/* count the dumped inodes map on each additional tape */
|
|
tapesize += (etapes - 1) *
|
|
(howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
|
|
tapesize += etapes + 10; /* headers + 10 trailer blks */
|
|
msg("estimated %ld tape blocks on %3.2f tape(s).\n",
|
|
tapesize, fetapes);
|
|
}
|
|
|
|
/*
|
|
* If the user only wants an estimate of the number of
|
|
* tapes, exit now.
|
|
*/
|
|
if (just_estimate)
|
|
exit(0);
|
|
|
|
/*
|
|
* Allocate tape buffer.
|
|
*/
|
|
if (!alloctape())
|
|
quit(
|
|
"can't allocate tape buffers - try a smaller blocking factor.\n");
|
|
|
|
startnewtape(1);
|
|
(void)time((time_t *)&(tstart_writing));
|
|
dumpmap(usedinomap, TS_CLRI, maxino - 1);
|
|
|
|
passno = 3;
|
|
setproctitle("%s: pass 3: directories", disk);
|
|
msg("dumping (Pass III) [directories]\n");
|
|
dirty = 0; /* XXX just to get gcc to shut up */
|
|
for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
|
|
if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */
|
|
dirty = *map++;
|
|
else
|
|
dirty >>= 1;
|
|
if ((dirty & 1) == 0)
|
|
continue;
|
|
/*
|
|
* Skip directory inodes deleted and maybe reallocated
|
|
*/
|
|
dp = getino(ino, &mode);
|
|
if (mode != IFDIR)
|
|
continue;
|
|
(void)dumpino(dp, ino);
|
|
}
|
|
|
|
passno = 4;
|
|
setproctitle("%s: pass 4: regular files", disk);
|
|
msg("dumping (Pass IV) [regular files]\n");
|
|
for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
|
|
if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */
|
|
dirty = *map++;
|
|
else
|
|
dirty >>= 1;
|
|
if ((dirty & 1) == 0)
|
|
continue;
|
|
/*
|
|
* Skip inodes deleted and reallocated as directories.
|
|
*/
|
|
dp = getino(ino, &mode);
|
|
if (mode == IFDIR)
|
|
continue;
|
|
(void)dumpino(dp, ino);
|
|
}
|
|
|
|
(void)time((time_t *)&(tend_writing));
|
|
spcl.c_type = TS_END;
|
|
for (i = 0; i < ntrec; i++)
|
|
writeheader(maxino - 1);
|
|
if (pipeout)
|
|
msg("DUMP: %jd tape blocks\n", (intmax_t)spcl.c_tapea);
|
|
else
|
|
msg("DUMP: %jd tape blocks on %d volume%s\n",
|
|
(intmax_t)spcl.c_tapea, spcl.c_volume,
|
|
(spcl.c_volume == 1) ? "" : "s");
|
|
|
|
/* report dump performance, avoid division through zero */
|
|
if (tend_writing - tstart_writing == 0)
|
|
msg("finished in less than a second\n");
|
|
else
|
|
msg("finished in %jd seconds, throughput %jd KBytes/sec\n",
|
|
(intmax_t)tend_writing - tstart_writing,
|
|
(intmax_t)(spcl.c_tapea /
|
|
(tend_writing - tstart_writing)));
|
|
|
|
putdumptime();
|
|
trewind();
|
|
broadcast("DUMP IS DONE!\a\a\n");
|
|
msg("DUMP IS DONE\n");
|
|
Exit(X_FINOK);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: dump [-0123456789acLnSu] [-B records] [-b blocksize] [-C cachesize]\n"
|
|
" [-D dumpdates] [-d density] [-f file | -P pipecommand] [-h level]\n"
|
|
" [-s feet] [-T date] filesystem\n"
|
|
" dump -W | -w\n");
|
|
exit(X_STARTUP);
|
|
}
|
|
|
|
/*
|
|
* Check to see if a disk is currently mounted.
|
|
*/
|
|
static char *
|
|
getmntpt(char *name, int *mntflagsp)
|
|
{
|
|
long mntsize, i;
|
|
struct statfs *mntbuf;
|
|
|
|
mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
|
|
for (i = 0; i < mntsize; i++) {
|
|
if (!strcmp(mntbuf[i].f_mntfromname, name)) {
|
|
*mntflagsp = mntbuf[i].f_flags;
|
|
return (mntbuf[i].f_mntonname);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Pick up a numeric argument. It must be nonnegative and in the given
|
|
* range (except that a vmax of 0 means unlimited).
|
|
*/
|
|
static long
|
|
numarg(const char *meaning, long vmin, long vmax)
|
|
{
|
|
char *p;
|
|
long val;
|
|
|
|
val = strtol(optarg, &p, 10);
|
|
if (*p)
|
|
errx(1, "illegal %s -- %s", meaning, optarg);
|
|
if (val < vmin || (vmax && val > vmax))
|
|
errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax);
|
|
return (val);
|
|
}
|
|
|
|
void
|
|
sig(int signo)
|
|
{
|
|
switch(signo) {
|
|
case SIGALRM:
|
|
case SIGBUS:
|
|
case SIGFPE:
|
|
case SIGHUP:
|
|
case SIGTERM:
|
|
case SIGTRAP:
|
|
if (pipeout)
|
|
quit("Signal on pipe: cannot recover\n");
|
|
msg("Rewriting attempted as response to unknown signal.\n");
|
|
(void)fflush(stderr);
|
|
(void)fflush(stdout);
|
|
close_rewind();
|
|
exit(X_REWRITE);
|
|
/* NOTREACHED */
|
|
case SIGSEGV:
|
|
msg("SIGSEGV: ABORTING!\n");
|
|
(void)signal(SIGSEGV, SIG_DFL);
|
|
(void)kill(0, SIGSEGV);
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
|
|
char *
|
|
rawname(char *cp)
|
|
{
|
|
struct stat sb;
|
|
|
|
/*
|
|
* Ensure that the device passed in is a raw device.
|
|
*/
|
|
if (stat(cp, &sb) == 0 && (sb.st_mode & S_IFMT) == S_IFCHR)
|
|
return (cp);
|
|
|
|
/*
|
|
* Since there's only one device type now, we can't construct any
|
|
* better name, so we have to return NULL.
|
|
*/
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* obsolete --
|
|
* Change set of key letters and ordered arguments into something
|
|
* getopt(3) will like.
|
|
*/
|
|
static void
|
|
obsolete(int *argcp, char **argvp[])
|
|
{
|
|
int argc, flags;
|
|
char *ap, **argv, *flagsp, **nargv, *p;
|
|
|
|
/* Setup. */
|
|
argv = *argvp;
|
|
argc = *argcp;
|
|
|
|
/*
|
|
* Return if no arguments or first argument has leading
|
|
* dash or slash.
|
|
*/
|
|
ap = argv[1];
|
|
if (argc == 1 || *ap == '-' || *ap == '/')
|
|
return;
|
|
|
|
/* Allocate space for new arguments. */
|
|
if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
|
|
(p = flagsp = malloc(strlen(ap) + 2)) == NULL)
|
|
err(1, NULL);
|
|
|
|
*nargv++ = *argv;
|
|
argv += 2;
|
|
|
|
for (flags = 0; *ap; ++ap) {
|
|
switch (*ap) {
|
|
case 'B':
|
|
case 'b':
|
|
case 'd':
|
|
case 'f':
|
|
case 'D':
|
|
case 'C':
|
|
case 'h':
|
|
case 's':
|
|
case 'T':
|
|
if (*argv == NULL) {
|
|
warnx("option requires an argument -- %c", *ap);
|
|
usage();
|
|
}
|
|
if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
|
|
err(1, NULL);
|
|
nargv[0][0] = '-';
|
|
nargv[0][1] = *ap;
|
|
(void)strcpy(&nargv[0][2], *argv);
|
|
++argv;
|
|
++nargv;
|
|
break;
|
|
default:
|
|
if (!flags) {
|
|
*p++ = '-';
|
|
flags = 1;
|
|
}
|
|
*p++ = *ap;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Terminate flags. */
|
|
if (flags) {
|
|
*p = '\0';
|
|
*nargv++ = flagsp;
|
|
} else
|
|
free(flagsp);
|
|
|
|
/* Copy remaining arguments. */
|
|
while ((*nargv++ = *argv++));
|
|
|
|
/* Update argument count. */
|
|
*argcp = nargv - *argvp - 1;
|
|
}
|