797 lines
19 KiB
C
797 lines
19 KiB
C
/*
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* Copyright (c) 1987, 1993
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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) 1987, 1993\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[] = "From: @(#)xinstall.c 8.1 (Berkeley) 7/21/93";
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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/wait.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/mount.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 <grp.h>
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#include <paths.h>
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#include <pwd.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 <unistd.h>
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#include <sysexits.h>
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#include <utime.h>
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#include "pathnames.h"
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/* Bootstrap aid - this doesn't exist in most older releases */
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#ifndef MAP_FAILED
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#define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */
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#endif
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#define DIRECTORY 0x01 /* Tell install it's a directory. */
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#define SETFLAGS 0x02 /* Tell install to set flags. */
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#define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
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#define BACKUP_SUFFIX ".old"
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struct passwd *pp;
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struct group *gp;
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gid_t gid;
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uid_t uid;
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int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose;
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mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
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char *suffix = BACKUP_SUFFIX;
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void copy __P((int, char *, int, char *, off_t));
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int compare __P((int, const char *, size_t, int, const char *, size_t));
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int create_newfile __P((char *, int, struct stat *));
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int create_tempfile __P((char *, char *, size_t));
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void install __P((char *, char *, u_long, u_int));
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void install_dir __P((char *));
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u_long numeric_id __P((char *, char *));
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void strip __P((char *));
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int trymmap __P((int));
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void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct stat from_sb, to_sb;
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mode_t *set;
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u_long fset;
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int ch, no_target;
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u_int iflags;
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char *flags, *group, *owner, *to_name;
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iflags = 0;
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group = owner = NULL;
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while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1)
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switch((char)ch) {
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case 'B':
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suffix = optarg;
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/* FALLTHROUGH */
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case 'b':
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dobackup = 1;
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break;
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case 'C':
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docompare = 1;
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break;
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case 'c':
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/* For backwards compatibility. */
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break;
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case 'd':
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dodir = 1;
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break;
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case 'f':
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flags = optarg;
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if (strtofflags(&flags, &fset, NULL))
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errx(EX_USAGE, "%s: invalid flag", flags);
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iflags |= SETFLAGS;
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break;
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case 'g':
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group = optarg;
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break;
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case 'M':
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nommap = 1;
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break;
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case 'm':
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if (!(set = setmode(optarg)))
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errx(EX_USAGE, "invalid file mode: %s",
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optarg);
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mode = getmode(set, 0);
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free(set);
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break;
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case 'o':
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owner = optarg;
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break;
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case 'p':
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docompare = dopreserve = 1;
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break;
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case 'S':
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safecopy = 1;
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break;
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case 's':
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dostrip = 1;
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break;
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case 'v':
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verbose = 1;
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break;
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case '?':
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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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/* some options make no sense when creating directories */
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if ((safecopy || dostrip) && dodir)
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usage();
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/*
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* Older versions allowed -d -C combo. Issue a warning
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* for now, but turn this into an error before 4.5-RELEASE.
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*/
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if (docompare && dodir)
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warnx("the -d and -C options may not be specified together");
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/* must have at least two arguments, except when creating directories */
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if (argc < 2 && !dodir)
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usage();
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/* need to make a temp copy so we can compare stripped version */
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if (docompare && dostrip)
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safecopy = 1;
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/* get group and owner id's */
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if (group != NULL) {
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if ((gp = getgrnam(group)) != NULL)
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gid = gp->gr_gid;
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else
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gid = (uid_t)numeric_id(group, "group");
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} else
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gid = (gid_t)-1;
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if (owner != NULL) {
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if ((pp = getpwnam(owner)) != NULL)
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uid = pp->pw_uid;
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else
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uid = (uid_t)numeric_id(owner, "user");
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} else
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uid = (uid_t)-1;
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if (dodir) {
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for (; *argv != NULL; ++argv)
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install_dir(*argv);
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exit(EX_OK);
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/* NOTREACHED */
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}
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no_target = stat(to_name = argv[argc - 1], &to_sb);
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if (!no_target && S_ISDIR(to_sb.st_mode)) {
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for (; *argv != to_name; ++argv)
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install(*argv, to_name, fset, iflags | DIRECTORY);
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exit(EX_OK);
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/* NOTREACHED */
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}
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/* can't do file1 file2 directory/file */
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if (argc != 2)
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usage();
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if (!no_target) {
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if (stat(*argv, &from_sb))
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err(EX_OSERR, "%s", *argv);
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if (!S_ISREG(to_sb.st_mode)) {
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errno = EFTYPE;
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err(EX_OSERR, "%s", to_name);
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}
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if (to_sb.st_dev == from_sb.st_dev &&
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to_sb.st_ino == from_sb.st_ino)
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errx(EX_USAGE,
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"%s and %s are the same file", *argv, to_name);
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}
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install(*argv, to_name, fset, iflags);
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exit(EX_OK);
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/* NOTREACHED */
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}
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u_long
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numeric_id(name, type)
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char *name, *type;
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{
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u_long val;
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char *ep;
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/*
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* XXX
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* We know that uid_t's and gid_t's are unsigned longs.
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*/
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errno = 0;
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val = strtoul(name, &ep, 10);
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if (errno)
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err(EX_NOUSER, "%s", name);
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if (*ep != '\0')
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errx(EX_NOUSER, "unknown %s %s", type, name);
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return (val);
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}
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/*
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* install --
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* build a path name and install the file
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*/
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void
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install(from_name, to_name, fset, flags)
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char *from_name, *to_name;
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u_long fset;
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u_int flags;
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{
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struct stat from_sb, temp_sb, to_sb;
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struct utimbuf utb;
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int devnull, files_match, from_fd, serrno, target;
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int tempcopy, temp_fd, to_fd;
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char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN];
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files_match = 0;
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/* If try to install NULL file to a directory, fails. */
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if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
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if (stat(from_name, &from_sb))
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err(EX_OSERR, "%s", from_name);
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if (!S_ISREG(from_sb.st_mode)) {
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errno = EFTYPE;
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err(EX_OSERR, "%s", from_name);
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}
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/* Build the target path. */
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if (flags & DIRECTORY) {
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(void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
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to_name,
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(p = strrchr(from_name, '/')) ? ++p : from_name);
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to_name = pathbuf;
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}
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devnull = 0;
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} else {
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devnull = 1;
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}
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target = stat(to_name, &to_sb) == 0;
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/* Only install to regular files. */
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if (target && !S_ISREG(to_sb.st_mode)) {
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errno = EFTYPE;
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warn("%s", to_name);
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return;
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}
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/* Only copy safe if the target exists. */
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tempcopy = safecopy && target;
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if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0)
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err(EX_OSERR, "%s", from_name);
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/* If we don't strip, we can compare first. */
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if (docompare && !dostrip && target) {
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if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
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err(EX_OSERR, "%s", to_name);
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if (devnull)
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files_match = to_sb.st_size == 0;
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else
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files_match = !(compare(from_fd, from_name,
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(size_t)from_sb.st_size, to_fd,
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to_name, (size_t)to_sb.st_size));
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/* Close "to" file unless we match. */
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if (!files_match)
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(void)close(to_fd);
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}
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if (!files_match) {
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if (tempcopy) {
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to_fd = create_tempfile(to_name, tempfile,
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sizeof(tempfile));
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if (to_fd < 0)
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err(EX_OSERR, "%s", tempfile);
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} else {
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if ((to_fd = create_newfile(to_name, target,
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&to_sb)) < 0)
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err(EX_OSERR, "%s", to_name);
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if (verbose)
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(void)printf("install: %s -> %s\n",
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from_name, to_name);
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}
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if (!devnull)
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copy(from_fd, from_name, to_fd,
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tempcopy ? tempfile : to_name, from_sb.st_size);
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}
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if (dostrip) {
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strip(tempcopy ? tempfile : to_name);
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/*
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* Re-open our fd on the target, in case we used a strip
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* that does not work in-place -- like GNU binutils strip.
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*/
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close(to_fd);
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to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0);
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if (to_fd < 0)
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err(EX_OSERR, "stripping %s", to_name);
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}
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/*
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* Compare the stripped temp file with the target.
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*/
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if (docompare && dostrip && target) {
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temp_fd = to_fd;
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/* Re-open to_fd using the real target name. */
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if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
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err(EX_OSERR, "%s", to_name);
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if (fstat(temp_fd, &temp_sb)) {
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serrno = errno;
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(void)unlink(tempfile);
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errno = serrno;
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err(EX_OSERR, "%s", tempfile);
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}
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if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd,
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to_name, (size_t)to_sb.st_size) == 0) {
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/*
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* If target has more than one link we need to
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* replace it in order to snap the extra links.
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* Need to preserve target file times, though.
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*/
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if (to_sb.st_nlink != 1) {
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utb.actime = to_sb.st_atime;
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utb.modtime = to_sb.st_mtime;
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(void)utime(tempfile, &utb);
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} else {
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files_match = 1;
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(void)unlink(tempfile);
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}
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(void) close(temp_fd);
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}
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}
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/*
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* Move the new file into place if doing a safe copy
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* and the files are different (or just not compared).
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*/
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if (tempcopy && !files_match) {
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/* Try to turn off the immutable bits. */
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if (to_sb.st_flags & NOCHANGEBITS)
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(void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS);
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if (dobackup) {
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if (snprintf(backup, MAXPATHLEN, "%s%s", to_name,
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suffix) != strlen(to_name) + strlen(suffix)) {
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unlink(tempfile);
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errx(EX_OSERR, "%s: backup filename too long",
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to_name);
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}
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if (verbose)
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(void)printf("install: %s -> %s\n", to_name, backup);
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if (rename(to_name, backup) < 0) {
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serrno = errno;
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unlink(tempfile);
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errno = serrno;
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err(EX_OSERR, "rename: %s to %s", to_name,
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backup);
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}
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}
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if (verbose)
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(void)printf("install: %s -> %s\n", from_name, to_name);
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if (rename(tempfile, to_name) < 0) {
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serrno = errno;
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unlink(tempfile);
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errno = serrno;
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err(EX_OSERR, "rename: %s to %s",
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tempfile, to_name);
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}
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/* Re-open to_fd so we aren't hosed by the rename(2). */
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(void) close(to_fd);
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if ((to_fd = open(to_name, O_RDONLY, 0)) < 0)
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err(EX_OSERR, "%s", to_name);
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}
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/*
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* Preserve the timestamp of the source file if necessary.
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*/
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if (dopreserve && !files_match && !devnull) {
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utb.actime = from_sb.st_atime;
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utb.modtime = from_sb.st_mtime;
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(void)utime(to_name, &utb);
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}
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if (fstat(to_fd, &to_sb) == -1) {
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serrno = errno;
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(void)unlink(to_name);
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errno = serrno;
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err(EX_OSERR, "%s", to_name);
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}
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/*
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* Set owner, group, mode for target; do the chown first,
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* chown may lose the setuid bits.
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*/
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if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
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(uid != (uid_t)-1 && uid != to_sb.st_uid) ||
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(mode != to_sb.st_mode)) {
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/* Try to turn off the immutable bits. */
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if (to_sb.st_flags & NOCHANGEBITS)
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(void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS);
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}
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if ((gid != (gid_t)-1 && gid != to_sb.st_gid) ||
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(uid != (uid_t)-1 && uid != to_sb.st_uid))
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if (fchown(to_fd, uid, gid) == -1) {
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serrno = errno;
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(void)unlink(to_name);
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errno = serrno;
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err(EX_OSERR,"%s: chown/chgrp", to_name);
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}
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if (mode != to_sb.st_mode)
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if (fchmod(to_fd, mode)) {
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serrno = errno;
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(void)unlink(to_name);
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errno = serrno;
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err(EX_OSERR, "%s: chmod", to_name);
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}
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/*
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* If provided a set of flags, set them, otherwise, preserve the
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* flags, except for the dump flag.
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* NFS does not support flags. Ignore EOPNOTSUPP flags if we're just
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* trying to turn off UF_NODUMP. If we're trying to set real flags,
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* then warn if the the fs doesn't support it, otherwise fail.
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*/
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if (!devnull && fchflags(to_fd,
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flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
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if (flags & SETFLAGS) {
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if (errno == EOPNOTSUPP)
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warn("%s: chflags", to_name);
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else {
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serrno = errno;
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(void)unlink(to_name);
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errno = serrno;
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err(EX_OSERR, "%s: chflags", to_name);
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}
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}
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}
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|
|
(void)close(to_fd);
|
|
if (!devnull)
|
|
(void)close(from_fd);
|
|
}
|
|
|
|
/*
|
|
* compare --
|
|
* compare two files; non-zero means files differ
|
|
*/
|
|
int
|
|
compare(int from_fd, const char *from_name, size_t from_len,
|
|
int to_fd, const char *to_name, size_t to_len)
|
|
{
|
|
char *p, *q;
|
|
int rv;
|
|
int done_compare;
|
|
|
|
rv = 0;
|
|
if (from_len != to_len)
|
|
return 1;
|
|
|
|
if (from_len <= 8 * 1024 * 1024) {
|
|
done_compare = 0;
|
|
if (trymmap(from_fd) && trymmap(to_fd)) {
|
|
p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
|
|
if (p == (char *)MAP_FAILED)
|
|
goto out;
|
|
q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
|
|
if (q == (char *)MAP_FAILED) {
|
|
munmap(p, from_len);
|
|
goto out;
|
|
}
|
|
|
|
rv = memcmp(p, q, from_len);
|
|
munmap(p, from_len);
|
|
munmap(q, from_len);
|
|
done_compare = 1;
|
|
}
|
|
out:
|
|
if (!done_compare) {
|
|
char buf1[MAXBSIZE];
|
|
char buf2[MAXBSIZE];
|
|
int n1, n2;
|
|
|
|
rv = 0;
|
|
lseek(from_fd, 0, SEEK_SET);
|
|
lseek(to_fd, 0, SEEK_SET);
|
|
while (rv == 0) {
|
|
n1 = read(from_fd, buf1, sizeof(buf1));
|
|
if (n1 == 0)
|
|
break; /* EOF */
|
|
else if (n1 > 0) {
|
|
n2 = read(to_fd, buf2, n1);
|
|
if (n2 == n1)
|
|
rv = memcmp(buf1, buf2, n1);
|
|
else
|
|
rv = 1; /* out of sync */
|
|
} else
|
|
rv = 1; /* read failure */
|
|
}
|
|
lseek(from_fd, 0, SEEK_SET);
|
|
lseek(to_fd, 0, SEEK_SET);
|
|
}
|
|
} else
|
|
rv = 1; /* don't bother in this case */
|
|
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* create_tempfile --
|
|
* create a temporary file based on path and open it
|
|
*/
|
|
int
|
|
create_tempfile(path, temp, tsize)
|
|
char *path;
|
|
char *temp;
|
|
size_t tsize;
|
|
{
|
|
char *p;
|
|
|
|
(void)strncpy(temp, path, tsize);
|
|
temp[tsize - 1] = '\0';
|
|
if ((p = strrchr(temp, '/')) != NULL)
|
|
p++;
|
|
else
|
|
p = temp;
|
|
(void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p);
|
|
temp[tsize - 1] = '\0';
|
|
return (mkstemp(temp));
|
|
}
|
|
|
|
/*
|
|
* create_newfile --
|
|
* create a new file, overwriting an existing one if necessary
|
|
*/
|
|
int
|
|
create_newfile(path, target, sbp)
|
|
char *path;
|
|
int target;
|
|
struct stat *sbp;
|
|
{
|
|
char backup[MAXPATHLEN];
|
|
|
|
if (target) {
|
|
/*
|
|
* Unlink now... avoid ETXTBSY errors later. Try to turn
|
|
* off the append/immutable bits -- if we fail, go ahead,
|
|
* it might work.
|
|
*/
|
|
if (sbp->st_flags & NOCHANGEBITS)
|
|
(void)chflags(path, sbp->st_flags & ~NOCHANGEBITS);
|
|
|
|
if (dobackup) {
|
|
if (snprintf(backup, MAXPATHLEN, "%s%s",
|
|
path, suffix) != strlen(path) + strlen(suffix))
|
|
errx(EX_OSERR, "%s: backup filename too long",
|
|
path);
|
|
(void)snprintf(backup, MAXPATHLEN, "%s%s",
|
|
path, suffix);
|
|
if (verbose)
|
|
(void)printf("install: %s -> %s\n",
|
|
path, backup);
|
|
if (rename(path, backup) < 0)
|
|
err(EX_OSERR, "rename: %s to %s", path, backup);
|
|
} else
|
|
(void)unlink(path);
|
|
}
|
|
|
|
return (open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR));
|
|
}
|
|
|
|
/*
|
|
* copy --
|
|
* copy from one file to another
|
|
*/
|
|
void
|
|
copy(from_fd, from_name, to_fd, to_name, size)
|
|
register int from_fd, to_fd;
|
|
char *from_name, *to_name;
|
|
off_t size;
|
|
{
|
|
register int nr, nw;
|
|
int serrno;
|
|
char *p, buf[MAXBSIZE];
|
|
int done_copy;
|
|
|
|
/* Rewind file descriptors. */
|
|
if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1)
|
|
err(EX_OSERR, "lseek: %s", from_name);
|
|
if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1)
|
|
err(EX_OSERR, "lseek: %s", to_name);
|
|
|
|
/*
|
|
* Mmap and write if less than 8M (the limit is so we don't totally
|
|
* trash memory on big files. This is really a minor hack, but it
|
|
* wins some CPU back.
|
|
*/
|
|
done_copy = 0;
|
|
if (size <= 8 * 1048576 && trymmap(from_fd) &&
|
|
(p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED,
|
|
from_fd, (off_t)0)) != (char *)MAP_FAILED) {
|
|
if ((nw = write(to_fd, p, size)) != size) {
|
|
serrno = errno;
|
|
(void)unlink(to_name);
|
|
errno = nw > 0 ? EIO : serrno;
|
|
err(EX_OSERR, "%s", to_name);
|
|
}
|
|
done_copy = 1;
|
|
}
|
|
if (!done_copy) {
|
|
while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
|
|
if ((nw = write(to_fd, buf, nr)) != nr) {
|
|
serrno = errno;
|
|
(void)unlink(to_name);
|
|
errno = nw > 0 ? EIO : serrno;
|
|
err(EX_OSERR, "%s", to_name);
|
|
}
|
|
if (nr != 0) {
|
|
serrno = errno;
|
|
(void)unlink(to_name);
|
|
errno = serrno;
|
|
err(EX_OSERR, "%s", from_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* strip --
|
|
* use strip(1) to strip the target file
|
|
*/
|
|
void
|
|
strip(to_name)
|
|
char *to_name;
|
|
{
|
|
int serrno, status;
|
|
|
|
switch (fork()) {
|
|
case -1:
|
|
serrno = errno;
|
|
(void)unlink(to_name);
|
|
errno = serrno;
|
|
err(EX_TEMPFAIL, "fork");
|
|
case 0:
|
|
execlp("strip", "strip", to_name, (char *)NULL);
|
|
err(EX_OSERR, "exec(strip)");
|
|
default:
|
|
if (wait(&status) == -1 || status) {
|
|
(void)unlink(to_name);
|
|
exit(EX_SOFTWARE);
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* install_dir --
|
|
* build directory heirarchy
|
|
*/
|
|
void
|
|
install_dir(path)
|
|
char *path;
|
|
{
|
|
register char *p;
|
|
struct stat sb;
|
|
int ch;
|
|
|
|
for (p = path;; ++p)
|
|
if (!*p || (p != path && *p == '/')) {
|
|
ch = *p;
|
|
*p = '\0';
|
|
if (stat(path, &sb)) {
|
|
if (errno != ENOENT || mkdir(path, 0755) < 0) {
|
|
err(EX_OSERR, "mkdir %s", path);
|
|
/* NOTREACHED */
|
|
} else if (verbose)
|
|
(void)printf("install: mkdir %s\n",
|
|
path);
|
|
} else if (!S_ISDIR(sb.st_mode))
|
|
errx(EX_OSERR, "%s exists but is not a directory", path);
|
|
if (!(*p = ch))
|
|
break;
|
|
}
|
|
|
|
if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid))
|
|
warn("chown %u:%u %s", uid, gid, path);
|
|
if (chmod(path, mode))
|
|
warn("chmod %o %s", mode, path);
|
|
}
|
|
|
|
/*
|
|
* usage --
|
|
* print a usage message and die
|
|
*/
|
|
void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "\
|
|
usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
|
|
[-o owner] file1 file2\n\
|
|
install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\
|
|
[-o owner] file1 ... fileN directory\n\
|
|
install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
|
|
exit(EX_USAGE);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
/*
|
|
* trymmap --
|
|
* return true (1) if mmap should be tried, false (0) if not.
|
|
*/
|
|
int
|
|
trymmap(fd)
|
|
int fd;
|
|
{
|
|
/*
|
|
* The ifdef is for bootstrapping - f_fstypename doesn't exist in
|
|
* pre-Lite2-merge systems.
|
|
*/
|
|
#ifdef MFSNAMELEN
|
|
struct statfs stfs;
|
|
|
|
if (nommap || fstatfs(fd, &stfs) != 0)
|
|
return (0);
|
|
if (strcmp(stfs.f_fstypename, "ufs") == 0 ||
|
|
strcmp(stfs.f_fstypename, "cd9660") == 0)
|
|
return (1);
|
|
#endif
|
|
return (0);
|
|
}
|