342 lines
8.1 KiB
C
342 lines
8.1 KiB
C
/*
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* Copyright (c) 1987 Regents of the University of California.
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* 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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char copyright[] =
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"@(#) Copyright (c) 1987 Regents of the University of California.\n\
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All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)xinstall.c 5.24 (Berkeley) 7/1/90";
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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/file.h>
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#include <grp.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <errno.h>
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#include <paths.h>
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#include "pathnames.h"
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static struct passwd *pp;
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static struct group *gp;
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static int docopy, dostrip, dodir, mode = 0755;
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static char *group, *owner, pathbuf[MAXPATHLEN];
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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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extern char *optarg;
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extern int optind;
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struct stat from_sb, to_sb;
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mode_t *set, *setmode();
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int ch, no_target;
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char *to_name;
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while ((ch = getopt(argc, argv, "cg:m:o:sd")) != EOF)
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switch((char)ch) {
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case 'c':
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docopy = 1;
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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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if (!(set = setmode(optarg))) {
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(void)fprintf(stderr,
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"install: invalid file mode.\n");
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exit(1);
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}
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mode = getmode(set, 0);
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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 's':
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dostrip = 1;
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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 '?':
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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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/* copy and strip options make no sense when creating directories */
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if ((docopy || dostrip) && dodir)
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usage();
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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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/* get group and owner id's */
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if (group && !(gp = getgrnam(group))) {
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fprintf(stderr, "install: unknown group %s.\n", group);
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exit(1);
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}
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if (owner && !(pp = getpwnam(owner))) {
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fprintf(stderr, "install: unknown user %s.\n", owner);
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exit(1);
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}
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if (dodir) {
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for (; *argv != NULL; ++argv)
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build(*argv);
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exit (0);
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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, 1);
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exit(0);
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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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fprintf(stderr, "install: can't find %s.\n", *argv);
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exit(1);
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}
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if (!S_ISREG(to_sb.st_mode)) {
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fprintf(stderr, "install: %s isn't a regular file.\n", to_name);
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exit(1);
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}
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if (to_sb.st_dev == from_sb.st_dev && to_sb.st_ino == from_sb.st_ino) {
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fprintf(stderr, "install: %s and %s are the same file.\n", *argv, to_name);
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exit(1);
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}
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/* unlink now... avoid ETXTBSY errors later */
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(void)unlink(to_name);
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}
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install(*argv, to_name, 0);
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exit(0);
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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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install(from_name, to_name, isdir)
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char *from_name, *to_name;
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int isdir;
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{
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struct stat from_sb;
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int devnull, from_fd, to_fd;
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char *C, *rindex();
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/* if try to install NULL file to a directory, fails */
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if (isdir || strcmp(from_name, _PATH_DEVNULL)) {
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if (stat(from_name, &from_sb)) {
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fprintf(stderr, "install: can't find %s.\n", from_name);
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exit(1);
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}
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if (!S_ISREG(from_sb.st_mode)) {
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fprintf(stderr, "install: %s isn't a regular file.\n", from_name);
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exit(1);
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}
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/* build the target path */
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if (isdir) {
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(void)sprintf(pathbuf, "%s/%s", to_name, (C = rindex(from_name, '/')) ? ++C : 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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/* unlink now... avoid ETXTBSY errors later */
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(void)unlink(to_name);
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/* create target */
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if ((to_fd = open(to_name, O_CREAT|O_WRONLY|O_TRUNC, 0600)) < 0) {
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error(to_name);
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exit(1);
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}
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if (!devnull) {
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if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) {
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(void)unlink(to_name);
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error(from_name);
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exit(1);
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}
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copy(from_fd, from_name, to_fd, to_name);
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(void)close(from_fd);
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}
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if (dostrip)
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strip(to_name);
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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 ((group || owner) &&
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fchown(to_fd, owner ? pp->pw_uid : -1, group ? gp->gr_gid : -1) ||
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fchmod(to_fd, mode)) {
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error(to_name);
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bad(to_name);
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}
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(void)close(to_fd);
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if (!docopy && !devnull && unlink(from_name)) {
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error(from_name);
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exit(1);
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}
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}
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/*
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* copy --
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* copy from one file to another
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*/
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copy(from_fd, from_name, to_fd, to_name)
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register int from_fd, to_fd;
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char *from_name, *to_name;
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{
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register int n;
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char buf[MAXBSIZE];
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while ((n = read(from_fd, buf, sizeof(buf))) > 0)
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if (write(to_fd, buf, n) != n) {
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error(to_name);
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bad(to_name);
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}
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if (n == -1) {
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error(from_name);
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bad(to_name);
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}
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}
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/*
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* strip --
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* use strip(1) to strip the target file
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*/
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strip(to_name)
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char *to_name;
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{
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int status;
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switch (vfork()) {
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case -1:
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error("fork");
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bad(to_name);
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case 0:
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execl(_PATH_STRIP, "strip", to_name, (char *)NULL);
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error(_PATH_STRIP);
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_exit(1);
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default:
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if (wait(&status) == -1 || status)
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bad(to_name);
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}
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}
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/*
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* build --
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* build directory heirarchy
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*/
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build(path)
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char *path;
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{
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register char *p;
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struct stat sb;
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int create, ch;
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for (create = 0, p = path;; ++p)
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if (!*p || *p == '/') {
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ch = *p;
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*p = '\0';
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if (stat(path, &sb)) {
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if (errno != ENOENT || mkdir(path, 0777) < 0) {
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error(path);
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return(1);
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}
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create = 1;
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}
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if (!(*p = ch))
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break;
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}
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if ((group || owner) &&
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chown(path, owner ? pp->pw_uid : -1, group ? gp->gr_gid : -1) ||
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chmod(path, mode)) {
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error(path);
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}
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return(0);
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}
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/*
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* error --
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* print out an error message
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*/
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error(s)
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char *s;
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{
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extern int errno;
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char *strerror();
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(void)fprintf(stderr, "install: %s: %s\n", s, strerror(errno));
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}
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/*
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* bad --
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* remove created target and die
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*/
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bad(fname)
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char *fname;
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{
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(void)unlink(fname);
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exit(1);
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}
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/*
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* usage --
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* print a usage message and die
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*/
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usage()
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{
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(void)fprintf(stderr, "\
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usage: install [-cs] [-g group] [-m mode] [-o owner] file1 file2\n\
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install [-cs] [-g group] [-m mode] [-o owner] file1 ... fileN directory\n\
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install -d [-g group] [-m mode] [-o owner] directory ...\n");
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exit(1);
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}
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