/* uname -- Report basic information about the system.  Generic version.

   Copyright (C) 1991-2018 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, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <string.h>

#include <sys/utsname.h>

#include <unistd.h>

/* This file defines UNAME_* to string constants.  */

#include <uname-values.h>

/* Put information about the system in NAME.  */

int

__uname (struct utsname *name)

{

  int save;

  if (name == NULL)

    {

      __set_errno (EINVAL);

      return -1;

    }

  save = errno;

  if (__gethostname (name->nodename, sizeof (name->nodename)) < 0)

    {

      if (errno == ENOSYS)

	{

	  /* Hostname is meaningless for this machine.  */

	  name->nodename[0] = '\0';

	  __set_errno (save);

	}

#ifdef	ENAMETOOLONG

      else if (errno == ENAMETOOLONG)

	/* The name was truncated.  */

	__set_errno (save);

#endif

      else

	return -1;

    }

  strncpy (name->sysname, UNAME_SYSNAME, sizeof (name->sysname));

  strncpy (name->release, UNAME_RELEASE, sizeof (name->release));

  strncpy (name->version, UNAME_VERSION, sizeof (name->version));

  strncpy (name->machine, UNAME_MACHINE, sizeof (name->machine));

  return 0;

}

weak_alias (__uname, uname)

libc_hidden_def (__uname)

libc_hidden_def (uname)