GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/vipw/vipw.c Lines: 0 44 0.0 %
Date: 2017-11-13 Branches: 0 32 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: vipw.c,v 1.21 2017/07/12 23:10:28 jca Exp $	 */
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/*
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 * Copyright (c) 1987, 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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#include <sys/time.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <fcntl.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 <unistd.h>
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#include <util.h>
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void		copyfile(int, int, struct stat *);
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__dead void	usage(void);
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int
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main(int argc, char *argv[])
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{
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	int pfd, tfd;
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	struct stat begin, end;
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	int ch;
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	while ((ch = getopt(argc, argv, "")) != -1) {
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		switch (ch) {
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		default:
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			usage();
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		}
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	}
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	argc -= optind;
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	argv += optind;
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	if (argc != 0)
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		usage();
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	if (pledge("stdio rpath wpath cpath fattr proc exec flock", NULL) == -1)
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		err(1, "pledge");
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	pw_init();
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	tfd = pw_lock(0);
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	if (tfd < 0)
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		errx(1, "the passwd file is busy or you cannot lock.");
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	pfd = open(_PATH_MASTERPASSWD, O_RDONLY, 0);
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	if (pfd < 0)
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		pw_error(_PATH_MASTERPASSWD, 1, 1);
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	copyfile(pfd, tfd, &begin);
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	(void)close(tfd);
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	for (;;) {
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		pw_edit(0, NULL);
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		if (stat(_PATH_MASTERPASSWD_LOCK, &end))
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			pw_error(_PATH_MASTERPASSWD_LOCK, 1, 1);
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		if (timespeccmp(&begin.st_mtimespec, &end.st_mtimespec, ==) &&
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		    begin.st_size == end.st_size) {
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			warnx("no changes made");
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			pw_error((char *)NULL, 0, 0);
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		}
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		if (pw_mkdb(NULL, 0) == 0)
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			break;
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		pw_prompt();
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	}
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	return 0;
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}
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void
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copyfile(int from, int to, struct stat *sb)
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{
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	int nr, nw, off;
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	char buf[8*1024];
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	struct timespec ts[2];
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	if (fstat(from, sb) == -1)
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		pw_error(_PATH_MASTERPASSWD, 1, 1);
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	while ((nr = read(from, buf, sizeof(buf))) > 0)
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		for (off = 0; nr > 0; nr -= nw, off += nw)
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			if ((nw = write(to, buf + off, nr)) < 0)
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				pw_error(_PATH_MASTERPASSWD_LOCK, 1, 1);
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	if (nr < 0)
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		pw_error(_PATH_MASTERPASSWD, 1, 1);
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	ts[0] = sb->st_atim;
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	ts[1] = sb->st_mtim;
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	(void)futimens(to, ts);
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}
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__dead void
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usage(void)
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{
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	extern char *__progname;
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	(void)fprintf(stderr, "usage: %s\n", __progname);
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	exit(1);
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}