Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/nohup/nohup.c	Lines:	0	30	0.0 %
Date:	2017-11-07	Branches:	0	24	0.0 %


/*	$OpenBSD: nohup.c,v 1.16 2015/11/09 16:52:32 deraadt Exp $	*/
/*	$NetBSD: nohup.c,v 1.6 1995/08/31 23:35:25 jtc Exp $	*/

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 <sys/file.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <err.h>

static void dofile(void);
__dead static void usage(void);

/*
 * nohup shall exit with one of the following values:
 * 126 - The utility was found but could not be invoked.
 * 127 - An error occurred in the nohup utility, or the utility could
 *       not be found.
 */
#define EXIT_NOEXEC	126
#define EXIT_NOTFOUND	127
#define EXIT_MISC	127

/*
 * If the standard output is a terminal, all output written to
 * its standard output shall be appended to the end of the file
 * nohup.out in the current directory.  If nohup.out cannot be
 * created or opened for appending, the output shall be appended
 * to the end of the file nohup.out in the directory specified
 * by the HOME environment variable.
 *
 * If a file is created, the file's permission bits shall be
 * set to S_IRUSR | S_IWUSR.
 */
#define	FILENAME	"nohup.out"

int
main(int argc, char *argv[])
{
	int exit_status;

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

	if (argc < 2)
		usage();

	if (isatty(STDOUT_FILENO))
		dofile();

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

	if (isatty(STDERR_FILENO) && dup2(STDOUT_FILENO, STDERR_FILENO) == -1) {
		/* may have just closed stderr */
		(void)fprintf(stdin, "nohup: %s\n", strerror(errno));
		exit(EXIT_MISC);
	}

	/*
	 * The nohup utility shall take the standard action for all signals
	 * except that SIGHUP shall be ignored.
	 */
	(void)signal(SIGHUP, SIG_IGN);

	execvp(argv[1], &argv[1]);
	exit_status = (errno == ENOENT) ? EXIT_NOTFOUND : EXIT_NOEXEC;
	err(exit_status, "%s", argv[1]);
}

static void
dofile(void)
{
	int fd;
	const char *p;
	char path[PATH_MAX];

	p = FILENAME;
	if ((fd = open(p, O_RDWR|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR)) >= 0)
		goto dupit;
	if ((p = getenv("HOME")) != NULL && *p != '\0' &&
	    (strlen(p) + strlen(FILENAME) + 1) < sizeof(path)) {
		(void)strlcpy(path, p, sizeof(path));
		(void)strlcat(path, "/", sizeof(path));
		(void)strlcat(path, FILENAME, sizeof(path));
		if ((fd = open(p = path, O_RDWR|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR)) >= 0)
			goto dupit;
	}
	errx(EXIT_MISC, "can't open a nohup.out file");

dupit:
	(void)lseek(fd, (off_t)0, SEEK_END);
	if (dup2(fd, STDOUT_FILENO) == -1)
		err(EXIT_MISC, NULL);
	(void)fprintf(stderr, "sending output to %s\n", p);
}

__dead static void
usage(void)
{
	(void)fprintf(stderr, "usage: nohup utility [arg ...]\n");
	exit(EXIT_MISC);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: nohup.c,v 1.16 2015/11/09 16:52:32 deraadt Exp $ */
2			/* $NetBSD: nohup.c,v 1.6 1995/08/31 23:35:25 jtc Exp $ */
3
4			/*
5			* Copyright (c) 1989 The Regents of the University of California.
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			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include <sys/file.h>
34			#include <sys/stat.h>
35			#include <fcntl.h>
36			#include <unistd.h>
37			#include <signal.h>
38			#include <stdio.h>
39			#include <stdlib.h>
40			#include <string.h>
41			#include <errno.h>
42			#include <limits.h>
43			#include <err.h>
44
45			static void dofile(void);
46			__dead static void usage(void);
47
48			/*
49			* nohup shall exit with one of the following values:
50			* 126 - The utility was found but could not be invoked.
51			* 127 - An error occurred in the nohup utility, or the utility could
52			* not be found.
53			*/
54			#define EXIT_NOEXEC 126
55			#define EXIT_NOTFOUND 127
56			#define EXIT_MISC 127
57
58			/*
59			* If the standard output is a terminal, all output written to
60			* its standard output shall be appended to the end of the file
61			* nohup.out in the current directory. If nohup.out cannot be
62			* created or opened for appending, the output shall be appended
63			* to the end of the file nohup.out in the directory specified
64			* by the HOME environment variable.
65			*
66			* If a file is created, the file's permission bits shall be
67			* set to S_IRUSR \| S_IWUSR.
68			*/
69			#define FILENAME "nohup.out"
70
71			int
72			main(int argc, char *argv[])
73			{
74			int exit_status;
75
76			if (pledge("stdio rpath wpath cpath exec flock", NULL) == -1)
77			err(1, "pledge");
78
79			if (argc < 2)
80			usage();
81
82			if (isatty(STDOUT_FILENO))
83			dofile();
84
85			if (pledge("stdio exec flock rpath cpath wpath", NULL) == -1)
86			err(1, "pledge");
87
88			if (isatty(STDERR_FILENO) && dup2(STDOUT_FILENO, STDERR_FILENO) == -1) {
89			/* may have just closed stderr */
90			(void)fprintf(stdin, "nohup: %s\n", strerror(errno));
91			exit(EXIT_MISC);
92			}
93
94			/*
95			* The nohup utility shall take the standard action for all signals
96			* except that SIGHUP shall be ignored.
97			*/
98			(void)signal(SIGHUP, SIG_IGN);
99
100			execvp(argv[1], &argv[1]);
101			exit_status = (errno == ENOENT) ? EXIT_NOTFOUND : EXIT_NOEXEC;
102			err(exit_status, "%s", argv[1]);
103			}
104
105			static void
106			dofile(void)
107			{
108			int fd;
109			const char *p;
110			char path[PATH_MAX];
111
112			p = FILENAME;
113			if ((fd = open(p, O_RDWR\|O_CREAT\|O_APPEND, S_IRUSR\|S_IWUSR)) >= 0)
114			goto dupit;
115			if ((p = getenv("HOME")) != NULL && *p != '\0' &&
116			(strlen(p) + strlen(FILENAME) + 1) < sizeof(path)) {
117			(void)strlcpy(path, p, sizeof(path));
118			(void)strlcat(path, "/", sizeof(path));
119			(void)strlcat(path, FILENAME, sizeof(path));
120			if ((fd = open(p = path, O_RDWR\|O_CREAT\|O_APPEND, S_IRUSR\|S_IWUSR)) >= 0)
121			goto dupit;
122			}
123			errx(EXIT_MISC, "can't open a nohup.out file");
124
125			dupit:
126			(void)lseek(fd, (off_t)0, SEEK_END);
127			if (dup2(fd, STDOUT_FILENO) == -1)
128			err(EXIT_MISC, NULL);
129			(void)fprintf(stderr, "sending output to %s\n", p);
130			}
131
132			__dead static void
133			usage(void)
134			{
135			(void)fprintf(stderr, "usage: nohup utility [arg ...]\n");
136			exit(EXIT_MISC);
137			}