-/* $NetBSD: nohup.c,v 1.8 1997/12/23 18:21:34 ross Exp $ */
-
/*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ * Portions copyright (c) 2007 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 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.
*
* SUCH DAMAGE.
*/
-#include <sys/cdefs.h>
+#if 0
#ifndef lint
-__COPYRIGHT(
- "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
- All rights reserved.\n");
+static const char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
-#if 0
-static char sccsid[] = "@(#)nohup.c 5.4 (Berkeley) 6/1/90";
-#endif
-__RCSID("$NetBSD: nohup.c,v 1.8 1997/12/23 18:21:34 ross Exp $");
+static char sccsid[] = "@(#)nohup.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
+#endif
+#include <sys/cdefs.h>
+#ifndef __APPLE__
+__FBSDID("$FreeBSD: src/usr.bin/nohup/nohup.c,v 1.10 2003/05/03 19:44:46 obrien Exp $");
+#endif
#include <sys/param.h>
-#include <sys/file.h>
#include <sys/stat.h>
+
+#include <err.h>
+#include <errno.h>
#include <fcntl.h>
-#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <errno.h>
+#include <unistd.h>
-static void dofile __P((void));
-static void usage __P((void));
-int main __P((int, char **));
+#ifdef __APPLE__
+#include <vproc.h>
+#include <vproc_priv.h>
+#endif
-/* nohup shall exit with one of the following values:
- 126 - The utility was found but could not be invoked.
- 127 - An error occured in the nohup utility, or the utility could
- not be found. */
-#define EXIT_NOEXEC 126
-#define EXIT_NOTFOUND 127
-#define EXIT_MISC 127
+static void dofile(void);
+static void usage(void);
+
+#define FILENAME "nohup.out"
+/*
+ * POSIX mandates that we exit with:
+ * 126 - If the utility was found, but failed to execute.
+ * 127 - If any other error occurred.
+ */
+#define EXIT_NOEXEC 126
+#define EXIT_NOTFOUND 127
+#define EXIT_MISC 127
int
-main(argc, argv)
- int argc;
- char **argv;
+main(int argc, char *argv[])
{
int exit_status;
- if (argc < 2)
+ while (getopt(argc, argv, "") != -1)
+ usage();
+ argc -= optind;
+ argv += optind;
+ if (argc < 1)
usage();
if (isatty(STDOUT_FILENO))
dofile();
- if (isatty(STDERR_FILENO) && dup2(STDOUT_FILENO, STDERR_FILENO) == -1) {
+ 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);
- }
+ err(EXIT_MISC, "%s", argv[0]);
- /* 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]);
+#ifdef __APPLE__
+ if (_vprocmgr_move_subset_to_user(geteuid(), "Background") != NULL)
+ err(EXIT_MISC, "can't migrate to background session");
+#endif
+ execvp(*argv, argv);
exit_status = (errno == ENOENT) ? EXIT_NOTFOUND : EXIT_NOEXEC;
- (void)fprintf(stderr, "nohup: %s: %s\n", argv[1], strerror(errno));
- exit(exit_status);
+ err(exit_status, "%s", argv[0]);
}
static void
-dofile()
+dofile(void)
{
int fd;
- char *p, path[MAXPATHLEN];
-
- /* 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"
+ char path[MAXPATHLEN];
+ const char *p;
+
+ /*
+ * POSIX mandates if the standard output is a terminal, the standard
+ * output is appended to nohup.out in the working directory. Failing
+ * that, it will be appended to nohup.out in the directory obtained
+ * from the HOME environment variable. If file creation is required,
+ * the mode_t is set to S_IRUSR | S_IWUSR.
+ */
p = FILENAME;
- if ((fd = open(p, O_RDWR|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR)) >= 0)
+ fd = open(p, O_RDWR | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR);
+ if (fd != -1)
goto dupit;
- if ((p = getenv("HOME")) != NULL) {
- (void)strcpy(path, p);
- (void)strcat(path, "/");
- (void)strcat(path, FILENAME);
- if ((fd = open(p = path, O_RDWR|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR)) >= 0)
+ if ((p = getenv("HOME")) != NULL && *p != '\0' &&
+ (size_t)snprintf(path, sizeof(path), "%s/%s", p, FILENAME) <
+ sizeof(path)) {
+ fd = open(p = path, O_RDWR | O_CREAT | O_APPEND,
+ S_IRUSR | S_IWUSR);
+ if (fd != -1)
goto dupit;
}
- (void)fprintf(stderr, "nohup: can't open a nohup.out file.\n");
- exit(EXIT_MISC);
+ errx(EXIT_MISC, "can't open a nohup.out file");
-dupit: (void)lseek(fd, 0L, SEEK_END);
- if (dup2(fd, STDOUT_FILENO) == -1) {
- (void)fprintf(stderr, "nohup: %s\n", strerror(errno));
- exit(EXIT_MISC);
- }
- (void)fprintf(stderr, "sending output to %s\n", p);
+dupit:
+#ifdef __APPLE__
+ (void)lseek(fd, 0L, SEEK_END);
+#endif
+ if (dup2(fd, STDOUT_FILENO) == -1)
+ err(EXIT_MISC, NULL);
+ (void)fprintf(stderr, "appending output to %s\n", p);
}
static void
-usage()
+usage(void)
{
- (void)fprintf(stderr, "usage: nohup command\n");
+ (void)fprintf(stderr, "usage: nohup [--] utility [arguments]\n");
exit(EXIT_MISC);
}
projects / apple / shell_cmds.git / blobdiff