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Apply some touchups

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This commit is contained in:
Justine Tunney 2021-02-07 06:11:44 -08:00
parent 9f149e1de3
commit 2f3bd90216
139 changed files with 1188 additions and 1154 deletions
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42
libc/calls/gethostname-bsd.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2021 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/errno.h"
#include "libc/str/str.h"
#define CTL_KERN 1
#define KERN_HOSTNAME 10
int gethostname_bsd(char *name, size_t len) {
char *p;
int cmd[2];
char buf[254];
size_t buflen;
cmd[0] = CTL_KERN;
cmd[1] = KERN_HOSTNAME;
buflen = sizeof(buf);
if (sysctl(cmd, 2, buf, &buflen, NULL, 0) == -1) {
if (errno == ENOMEM) errno = ENAMETOOLONG;
return -1;
}
strncpy(name, buf, len);
name[len - 1] = '\0';
if ((p = strchr(name, '.'))) *p = '\0';
return 0;
}