1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static const char copyright[] =
36"@(#) Copyright (c) 1989, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41#if 0
42static char sccsid[] = "@(#)nohup.c 8.1 (Berkeley) 6/6/93";
43#endif
44static const char rcsid[] =
| 1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static const char copyright[] =
36"@(#) Copyright (c) 1989, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41#if 0
42static char sccsid[] = "@(#)nohup.c 8.1 (Berkeley) 6/6/93";
43#endif
44static const char rcsid[] =
|
45 "$FreeBSD: head/usr.bin/nohup/nohup.c 98971 2002-06-28 09:34:46Z tjr $";
| 45 "$FreeBSD: head/usr.bin/nohup/nohup.c 99984 2002-07-14 18:23:22Z alfred $";
|
46#endif /* not lint */
47
48#include <sys/param.h>
49#include <sys/stat.h>
50
51#include <err.h>
52#include <errno.h>
53#include <fcntl.h>
54#include <signal.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <string.h>
58#include <unistd.h>
59
60static void dofile(void);
61static void usage(void);
62
63#define FILENAME "nohup.out"
64/*
65 * POSIX mandates that we exit with:
66 * 126 - If the utility was found, but failed to execute.
67 * 127 - If any other error occurred.
68 */
69#define EXIT_NOEXEC 126
70#define EXIT_NOTFOUND 127
71#define EXIT_MISC 127
72
73int
| 46#endif /* not lint */
47
48#include <sys/param.h>
49#include <sys/stat.h>
50
51#include <err.h>
52#include <errno.h>
53#include <fcntl.h>
54#include <signal.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <string.h>
58#include <unistd.h>
59
60static void dofile(void);
61static void usage(void);
62
63#define FILENAME "nohup.out"
64/*
65 * POSIX mandates that we exit with:
66 * 126 - If the utility was found, but failed to execute.
67 * 127 - If any other error occurred.
68 */
69#define EXIT_NOEXEC 126
70#define EXIT_NOTFOUND 127
71#define EXIT_MISC 127
72
73int
|
74main(argc, argv)
75 int argc;
76 char *argv[];
| 74main(int argc, char *argv[])
|
77{
78 int exit_status;
79
80 while (getopt(argc, argv, "") != -1)
81 usage();
82 argc -= optind;
83 argv += optind;
84 if (argc < 1)
85 usage();
86
87 if (isatty(STDOUT_FILENO))
88 dofile();
89 if (isatty(STDERR_FILENO) && dup2(STDOUT_FILENO, STDERR_FILENO) == -1)
90 /* may have just closed stderr */
91 err(EXIT_MISC, "%s", argv[0]);
92
93 (void)signal(SIGHUP, SIG_IGN);
94
95 execvp(*argv, argv);
96 exit_status = (errno == ENOENT) ? EXIT_NOTFOUND : EXIT_NOEXEC;
97 err(exit_status, "%s", argv[0]);
98}
99
100static void
| 75{
76 int exit_status;
77
78 while (getopt(argc, argv, "") != -1)
79 usage();
80 argc -= optind;
81 argv += optind;
82 if (argc < 1)
83 usage();
84
85 if (isatty(STDOUT_FILENO))
86 dofile();
87 if (isatty(STDERR_FILENO) && dup2(STDOUT_FILENO, STDERR_FILENO) == -1)
88 /* may have just closed stderr */
89 err(EXIT_MISC, "%s", argv[0]);
90
91 (void)signal(SIGHUP, SIG_IGN);
92
93 execvp(*argv, argv);
94 exit_status = (errno == ENOENT) ? EXIT_NOTFOUND : EXIT_NOEXEC;
95 err(exit_status, "%s", argv[0]);
96}
97
98static void
|
101dofile()
| 99dofile(void)
|
102{
103 int fd;
104 char path[MAXPATHLEN];
105 const char *p;
106
107 /*
108 * POSIX mandates if the standard output is a terminal, the standard
109 * output is appended to nohup.out in the working directory. Failing
110 * that, it will be appended to nohup.out in the directory obtained
111 * from the HOME environment variable. If file creation is required,
112 * the mode_t is set to S_IRUSR | S_IWUSR.
113 */
114 p = FILENAME;
115 fd = open(p, O_RDWR | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR);
116 if (fd != -1)
117 goto dupit;
118 if ((p = getenv("HOME")) != NULL && *p != '\0' &&
119 (size_t)snprintf(path, sizeof(path), "%s/%s", p, FILENAME) <
120 sizeof(path)) {
121 fd = open(p = path, O_RDWR | O_CREAT | O_APPEND,
122 S_IRUSR | S_IWUSR);
123 if (fd != -1)
124 goto dupit;
125 }
126 errx(EXIT_MISC, "can't open a nohup.out file");
127
128dupit:
129 if (dup2(fd, STDOUT_FILENO) == -1)
130 err(EXIT_MISC, NULL);
131 (void)fprintf(stderr, "appending output to %s\n", p);
132}
133
134static void
| 100{
101 int fd;
102 char path[MAXPATHLEN];
103 const char *p;
104
105 /*
106 * POSIX mandates if the standard output is a terminal, the standard
107 * output is appended to nohup.out in the working directory. Failing
108 * that, it will be appended to nohup.out in the directory obtained
109 * from the HOME environment variable. If file creation is required,
110 * the mode_t is set to S_IRUSR | S_IWUSR.
111 */
112 p = FILENAME;
113 fd = open(p, O_RDWR | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR);
114 if (fd != -1)
115 goto dupit;
116 if ((p = getenv("HOME")) != NULL && *p != '\0' &&
117 (size_t)snprintf(path, sizeof(path), "%s/%s", p, FILENAME) <
118 sizeof(path)) {
119 fd = open(p = path, O_RDWR | O_CREAT | O_APPEND,
120 S_IRUSR | S_IWUSR);
121 if (fd != -1)
122 goto dupit;
123 }
124 errx(EXIT_MISC, "can't open a nohup.out file");
125
126dupit:
127 if (dup2(fd, STDOUT_FILENO) == -1)
128 err(EXIT_MISC, NULL);
129 (void)fprintf(stderr, "appending output to %s\n", p);
130}
131
132static void
|
135usage()
| 133usage(void)
|
136{
137 (void)fprintf(stderr, "usage: nohup [--] utility [arguments]\n");
138 exit(EXIT_MISC);
139}
| 134{
135 (void)fprintf(stderr, "usage: nohup [--] utility [arguments]\n");
136 exit(EXIT_MISC);
137}
|