57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/* gethostname emulation for SysV and POSIX.1.
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Copyright (C) 1992, 2003, 2006, 2008 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* David MacKenzie <djm@gnu.ai.mit.edu> */
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#include <config.h>
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/* Specification. */
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#include <unistd.h>
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#ifdef HAVE_UNAME
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# include <sys/utsname.h>
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#endif
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#include <string.h>
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/* Put up to LEN chars of the host name into NAME.
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Null terminate it if the name is shorter than LEN.
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Return 0 if ok, -1 if error. */
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#include <stddef.h>
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int
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gethostname (char *name, size_t len)
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{
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#ifdef HAVE_UNAME
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struct utsname uts;
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if (uname (&uts) == -1)
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return -1;
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if (len > sizeof (uts.nodename))
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{
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/* More space than we need is available. */
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name[sizeof (uts.nodename)] = '\0';
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len = sizeof (uts.nodename);
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}
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strncpy (name, uts.nodename, len);
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#else
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strcpy (name, ""); /* Hardcode your system name if you want. */
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#endif
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return 0;
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}
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