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author | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
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committer | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
commit | 5fd83771641d15c418f747bd343ba6738d3875f7 (patch) | |
tree | 5abf0f78f680d9837dbd93d4d4c3933bb7509599 /shell_cmds/hostname/hostname.c | |
download | apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.gz apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.zst apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.zip |
Import macOS userland
adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106
Diffstat (limited to 'shell_cmds/hostname/hostname.c')
-rw-r--r-- | shell_cmds/hostname/hostname.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/shell_cmds/hostname/hostname.c b/shell_cmds/hostname/hostname.c new file mode 100644 index 0000000..3df6542 --- /dev/null +++ b/shell_cmds/hostname/hostname.c @@ -0,0 +1,105 @@ +/*- + * 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 +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/bin/hostname/hostname.c,v 1.19 2006/12/08 07:47:08 kientzle Exp $"); + +#include <sys/param.h> + +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +void usage(void); + +int +main(int argc, char *argv[]) +{ + int ch, sflag; + char *p, hostname[MAXHOSTNAMELEN]; + + 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); +} + +void +usage(void) +{ + + (void)fprintf(stderr, "usage: hostname [-fs] [name-of-host]\n"); + exit(1); +} |