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glibc  2.9
uname.c
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00001 /* Copyright (C) 1991,92,96,97,2000,02 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <string.h>
00021 #include <sys/utsname.h>
00022 #include <unistd.h>
00023 
00024 /* This file is created by the configuration process, and defines UNAME_*.  */
00025 #include <config-name.h>
00026 
00027 /* Put information about the system in NAME.  */
00028 int
00029 __uname (name)
00030      struct utsname *name;
00031 {
00032   int save;
00033 
00034   if (name == NULL)
00035     {
00036       __set_errno (EINVAL);
00037       return -1;
00038     }
00039 
00040   save = errno;
00041   if (__gethostname (name->nodename, sizeof (name->nodename)) < 0)
00042     {
00043       if (errno == ENOSYS)
00044        {
00045          /* Hostname is meaningless for this machine.  */
00046          name->nodename[0] = '\0';
00047          __set_errno (save);
00048        }
00049 #ifdef ENAMETOOLONG
00050       else if (errno == ENAMETOOLONG)
00051        /* The name was truncated.  */
00052        __set_errno (save);
00053 #endif
00054       else
00055        return -1;
00056     }
00057   strncpy (name->sysname, UNAME_SYSNAME, sizeof (name->sysname));
00058   strncpy (name->release, UNAME_RELEASE, sizeof (name->release));
00059   strncpy (name->version, UNAME_VERSION, sizeof (name->version));
00060   strncpy (name->machine, UNAME_MACHINE, sizeof (name->machine));
00061 
00062   return 0;
00063 }
00064 weak_alias (__uname, uname)
00065 libc_hidden_def (__uname)
00066 libc_hidden_def (uname)