src/port/gethostname.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  * gethostname.c
   4  *        gethostname using uname
   5  *
   6  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
   7  * Portions Copyright (c) 1994, Regents of the University of California
   8  *
   9  * IDENTIFICATION
  10  *        $PostgreSQL$
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14
  15 #include "c.h"
  16
  17 #include <sys/utsname.h>
  18
  19 int
  20 gethostname(char *name, int namelen)
  21 {
  22         static struct utsname mname;
  23         static int      called = 0;
  24
  25         if (!called)
  26         {
  27                 called++;
  28                 uname(&mname);
  29         }
  30         strncpy(name, mname.nodename, (SYS_NMLN < namelen ? SYS_NMLN : namelen));
  31
  32         return 0;
  33 }