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authorJim Meyering <jim@meyering.net>1992-11-01 05:44:29 +0000
committerJim Meyering <jim@meyering.net>1992-11-01 05:44:29 +0000
commitccbd1d7dc5189f4637468a8136f672e60ee0e531 (patch)
treef07938daa9443c4a699efa77d88eb9eb2c2e663b /lib/gethostname.c
parent144b82c6c22abaa2a3247dc33b286662a7aa90d9 (diff)
downloadcoreutils-ccbd1d7dc5189f4637468a8136f672e60ee0e531.tar.xz
Initial revision
Diffstat (limited to 'lib/gethostname.c')
-rw-r--r--lib/gethostname.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/gethostname.c b/lib/gethostname.c
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+/* gethostname emulation for SysV and POSIX.1.
+ Copyright (C) 1992 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* David MacKenzie <djm@gnu.ai.mit.edu> */
+
+#ifdef HAVE_UNAME
+#include <sys/utsname.h>
+#endif
+
+/* Put up to LEN chars of the host name into NAME.
+ Null terminate it if the name is shorter than LEN.
+ Return 0 if ok, -1 if error. */
+
+int
+gethostname (name, len)
+ char *name;
+ int len;
+{
+#ifdef HAVE_UNAME
+ struct utsname uts;
+
+ if (uname (&uts) == -1)
+ return -1;
+ if (len > sizeof (uts.nodename))
+ {
+ /* More space than we need is available. */
+ name[sizeof (uts.nodename)] = '\0';
+ len = sizeof (uts.nodename);
+ }
+ strncpy (name, uts.nodename, len);
+#else
+ strcpy (name, ""); /* Hardcode your system name if you want. */
+#endif
+ return 0;
+}