mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-05 21:00:05 +00:00
b8f5d8dd4e
* sysdeps/unix/sysv/gethostname.c (__gethostname): When LEN is too short, copy that much into NAME anyway before returning error.
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* Copyright (C) 1992, 1995, 1997, 2000, 2001 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/utsname.h>
|
|
|
|
/* Put the name of the current host in no more than LEN bytes of NAME.
|
|
The result is null-terminated if LEN is large enough for the full
|
|
name and the terminator. */
|
|
int
|
|
__gethostname (name, len)
|
|
char *name;
|
|
size_t len;
|
|
{
|
|
struct utsname buf;
|
|
size_t node_len;
|
|
|
|
if (uname (&buf))
|
|
return -1;
|
|
|
|
node_len = strlen (buf.nodename) + 1;
|
|
memcpy (name, buf.nodename, len < node_len ? len : node_len);
|
|
|
|
if (node_len > len)
|
|
{
|
|
__set_errno (ENAMETOOLONG);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
weak_alias (__gethostname, gethostname)
|