BSD 4.4 Lite Usr.bin Sources

1 files changed, 117 insertions, 0 deletions

diff --git a/usr.bin/nohup/nohup.c b/usr.bin/nohup/nohup.c
new file mode 100644
index 0000000..d469a13
--- /dev/null
+++ b/usr.bin/nohup/nohup.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	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. 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
+ *    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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)nohup.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+void dofile __P((void));
+void usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	if (argc < 2)
+		usage();
+
+	if (isatty(STDOUT_FILENO))
+		dofile();
+	if (isatty(STDERR_FILENO) && dup2(STDOUT_FILENO, STDERR_FILENO) == -1) {
+		/* may have just closed stderr */
+		(void)fprintf(stdin, "nohup: %s\n", strerror(errno));
+		exit(1);
+	}
+
+	(void)signal(SIGHUP, SIG_IGN);
+	(void)signal(SIGQUIT, SIG_IGN);
+
+	execvp(argv[1], &argv[1]);
+	(void)fprintf(stderr,
+	    "nohup: %s: %s\n", argv[1], strerror(errno));
+	exit(1);
+}
+
+void
+dofile()
+{
+	int fd;
+	char *p, path[MAXPATHLEN];
+
+#define	FILENAME	"nohup.out"
+	p = FILENAME;
+	if ((fd = open(p, O_RDWR|O_CREAT, S_IRUSR | S_IWUSR)) >= 0)
+		goto dupit;
+	if (p = getenv("HOME")) {
+		(void)strcpy(path, p);
+		(void)strcat(path, "/");
+		(void)strcat(path, FILENAME);
+		if ((fd = open(p = path,
+		    O_RDWR|O_CREAT, S_IRUSR | S_IWUSR)) >= 0)
+			goto dupit;
+	}
+	(void)fprintf(stderr, "nohup: can't open a nohup.out file.\n");
+	exit(1);
+
+dupit:	(void)lseek(fd, (off_t)0, SEEK_END);
+	if (dup2(fd, STDOUT_FILENO) == -1) {
+		(void)fprintf(stderr, "nohup: %s\n", strerror(errno));
+		exit(1);
+	}
+	(void)fprintf(stderr, "sending output to %s\n", p);
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr, "usage: nohup command\n");
+	exit(1);
+}