Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	libexec/lockspool/lockspool.c	Lines:	0	37	0.0 %
Date:	2017-11-07	Branches:	0	28	0.0 %


/*	$OpenBSD: lockspool.c,v 1.18 2015/11/24 00:19:29 deraadt Exp $	*/

/*
 * Copyright (c) 1998 Theo de Raadt <deraadt@theos.com>
 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 * THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <signal.h>
#include <pwd.h>
#include <syslog.h>
#include <unistd.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <poll.h>
#include <err.h>

#include "mail.local.h"

void unhold(int);
void usage(void);

extern char *__progname;

int
main(int argc, char *argv[])
{
	struct passwd *pw;
	struct pollfd pfd;
	ssize_t nread;
	char *from, c;
	int holdfd;

	if (pledge("stdio rpath wpath getpw cpath fattr", NULL) == -1)
		err(1, "pledge");

	openlog(__progname, LOG_PERROR, LOG_MAIL);

	if (argc != 1 && argc != 2)
		usage();
	if (argc == 2 && getuid() != 0)
		merr(FATAL, "you must be root to lock someone else's spool");

	signal(SIGTERM, unhold);
	signal(SIGINT, unhold);
	signal(SIGHUP, unhold);
	signal(SIGPIPE, unhold);

	if (argc == 2)
		pw = getpwnam(argv[1]);
	else
		pw = getpwuid(getuid());
	if (pw == NULL)
		exit (1);
	from = pw->pw_name;

	holdfd = getlock(from, pw);
	if (holdfd == -1) {
		write(STDOUT_FILENO, "0\n", 2);
		exit (1);
	}
	write(STDOUT_FILENO, "1\n", 2);

	/* wait for the other end of the pipe to close, then release the lock */
	pfd.fd = STDIN_FILENO;
	pfd.events = POLLIN;
	do {
		if (poll(&pfd, 1, INFTIM) == -1) {
			if (errno != EINTR)
				break;
		}
		do {
			nread = read(STDIN_FILENO, &c, 1);
		} while (nread == 1 || (nread == -1 && errno == EINTR));
	} while (nread == -1 && errno == EAGAIN);
	rellock();
	exit (0);
}

/*ARGSUSED*/
void
unhold(int signo)
{

	rellock();
	_exit(0);
}

void
usage(void)
{

	merr(FATAL, "usage: %s [username]", __progname);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: lockspool.c,v 1.18 2015/11/24 00:19:29 deraadt Exp $ */
2
3			/*
4			* Copyright (c) 1998 Theo de Raadt <deraadt@theos.com>
5			* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
6			* All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			*
17			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18			* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
19			* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
20			* THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21			* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22			* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23			* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24			* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25			* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
26			* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27			*/
28
29			#include <signal.h>
30			#include <pwd.h>
31			#include <syslog.h>
32			#include <unistd.h>
33			#include <errno.h>
34			#include <stdio.h>
35			#include <stdlib.h>
36			#include <poll.h>
37			#include <err.h>
38
39			#include "mail.local.h"
40
41			void unhold(int);
42			void usage(void);
43
44			extern char *__progname;
45
46			int
47			main(int argc, char *argv[])
48			{
49			struct passwd *pw;
50			struct pollfd pfd;
51			ssize_t nread;
52			char *from, c;
53			int holdfd;
54
55			if (pledge("stdio rpath wpath getpw cpath fattr", NULL) == -1)
56			err(1, "pledge");
57
58			openlog(__progname, LOG_PERROR, LOG_MAIL);
59
60			if (argc != 1 && argc != 2)
61			usage();
62			if (argc == 2 && getuid() != 0)
63			merr(FATAL, "you must be root to lock someone else's spool");
64
65			signal(SIGTERM, unhold);
66			signal(SIGINT, unhold);
67			signal(SIGHUP, unhold);
68			signal(SIGPIPE, unhold);
69
70			if (argc == 2)
71			pw = getpwnam(argv[1]);
72			else
73			pw = getpwuid(getuid());
74			if (pw == NULL)
75			exit (1);
76			from = pw->pw_name;
77
78			holdfd = getlock(from, pw);
79			if (holdfd == -1) {
80			write(STDOUT_FILENO, "0\n", 2);
81			exit (1);
82			}
83			write(STDOUT_FILENO, "1\n", 2);
84
85			/* wait for the other end of the pipe to close, then release the lock */
86			pfd.fd = STDIN_FILENO;
87			pfd.events = POLLIN;
88			do {
89			if (poll(&pfd, 1, INFTIM) == -1) {
90			if (errno != EINTR)
91			break;
92			}
93			do {
94			nread = read(STDIN_FILENO, &c, 1);
95			} while (nread == 1 \|\| (nread == -1 && errno == EINTR));
96			} while (nread == -1 && errno == EAGAIN);
97			rellock();
98			exit (0);
99			}
100
101			/ARGSUSED/
102			void
103			unhold(int signo)
104			{
105
106			rellock();
107			_exit(0);
108			}
109
110			void
111			usage(void)
112			{
113
114			merr(FATAL, "usage: %s [username]", __progname);
115			}