HOSTNAME(1): Import from FreeBSD

2025-10-14 07:15:58 +08:00 · 2014-11-05 14:27:18 +01:00
parent c622a5e22a
commit 50e82a6d15
6 changed files with 151 additions and 1 deletions
--- a/freebsd/bin/hostname/hostname.c
+++ b/freebsd/bin/hostname/hostname.c
@@ -0,0 +1,143 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*-
+ * Copyright (c) 1988, 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.
+ * 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.
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1988, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)hostname.c	8.1 (Berkeley) 5/31/93";
+#endif /* not lint */
+#endif
+#ifdef __rtems__
+#define __need_getopt_newlib
+#include <getopt.h>
+#include <rtems/netcmds-config.h>
+#include <machine/rtems-bsd-program.h>
+#include <machine/rtems-bsd-commands.h>
+#endif /* __rtems__ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/bsd/sys/param.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static void usage(void);
+
+#ifdef __rtems__
+static int main(int argc, char *argv[]);
+
+static int hostname_command(int argc, char *argv[])
+{
+	int exit_code;
+
+	rtems_bsd_program_lock();
+
+	exit_code = rtems_bsd_program_call_main("hostname", main, argc, argv);
+
+	rtems_bsd_program_unlock();
+
+	return exit_code;
+}
+
+rtems_shell_cmd_t rtems_shell_HOSTNAME_Command = {
+  .name = "hostname",
+  .usage = "hostname [-fs] [name-of-host]",
+  .topic = "net",
+  .command = hostname_command
+};
+#endif /* __rtems__ */
+int
+main(int argc, char *argv[])
+{
+	int ch, sflag;
+	char *p, hostname[MAXHOSTNAMELEN];
+#ifdef __rtems__
+	struct getopt_data getopt_data;
+	memset(&getopt_data, 0, sizeof(getopt_data));
+#define optind getopt_data.optind
+#define getopt(argc, argv, opt) getopt_r(argc, argv, "+" opt, &getopt_data)
+#endif /* __rtems__ */
+
+	sflag = 0;
+	while ((ch = getopt(argc, argv, "fs")) != -1)
+		switch (ch) {
+		case 'f':
+			/*
+			 * On Linux, "hostname -f" prints FQDN.
+			 * BSD "hostname" always prints FQDN by
+			 * default, so we accept but ignore -f.
+			 */
+			break;
+		case 's':
+			sflag = 1;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (argc > 1)
+		usage();
+
+	if (*argv) {
+		if (sethostname(*argv, (int)strlen(*argv)))
+			err(1, "sethostname");
+	} else {
+		if (gethostname(hostname, (int)sizeof(hostname)))
+			err(1, "gethostname");
+		if (sflag) {
+			p = strchr(hostname, '.');
+			if (p != NULL)
+				*p = '\0';
+		}
+		(void)printf("%s\n", hostname);
+	}
+	exit(0);
+}
+
+static void
+usage(void)
+{
+
+	(void)fprintf(stderr, "usage: hostname [-fs] [name-of-host]\n");
+	exit(1);
+}