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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [net/] [getXXent.c] - Blame information for rev 207

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1 207 jeremybenn
/* Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library 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 GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, write to the Free
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   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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   02111-1307 USA.  */
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#include <errno.h>
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#define _IO_MTSAFE_IO
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#include <bits/libc-lock.h>
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#include <stdlib.h>
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#include "nsswitch.h"
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/*******************************************************************\
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|* Here we assume several symbols to be defined:                   *|
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|*                                                                 *|
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|* LOOKUP_TYPE   - the return type of the function                 *|
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|*                                                                 *|
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|* GETFUNC_NAME  - name of the non-reentrant getXXXent function    *|
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|*                                                                 *|
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|* BUFLEN        - size of static buffer                           *|
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|*                                                                 *|
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|* Optionally the following vars can be defined:                   *|
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|*                                                                 *|
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|* NEED_H_ERRNO  - an extra parameter will be passed to point to   *|
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|*                 the global `h_errno' variable.                  *|
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|*                                                                 *|
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\*******************************************************************/
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/* To make the real sources a bit prettier.  */
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#define REENTRANT_GETNAME APPEND_R (GETFUNC_NAME)
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#define APPEND_R(name) APPEND_R1 (name)
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#define APPEND_R1(name) name##_r
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#define INTERNAL(name) INTERNAL1 (name)
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#define INTERNAL1(name) __##name
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/* Sometimes we need to store error codes in the `h_errno' variable.  */
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#ifdef NEED_H_ERRNO
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# define H_ERRNO_PARM , int *h_errnop
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# define H_ERRNO_VAR &h_errno
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#else
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# define H_ERRNO_PARM
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# define H_ERRNO_VAR NULL
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#endif
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/* Prototype of the reentrant version.  */
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extern int INTERNAL (REENTRANT_GETNAME) (LOOKUP_TYPE *resbuf, char *buffer,
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                                         size_t buflen, LOOKUP_TYPE **result
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                                         H_ERRNO_PARM);
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/* We need to protect the dynamic buffer handling.  */
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__libc_lock_define_initialized (static, lock);
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/* This points to the static buffer used.  */
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libc_freeres_ptr (static char *buffer);
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LOOKUP_TYPE *
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GETFUNC_NAME (void)
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{
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  static size_t buffer_size;
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  static union
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  {
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    LOOKUP_TYPE l;
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    void *ptr;
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  } resbuf;
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  LOOKUP_TYPE *result;
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  int save;
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  /* Get lock.  */
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  __libc_lock_lock (lock);
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  result = (LOOKUP_TYPE *)
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    __nss_getent ((getent_r_function) INTERNAL (REENTRANT_GETNAME),
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                  &resbuf.ptr, &buffer, BUFLEN, &buffer_size,
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                  H_ERRNO_VAR);
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  save = errno;
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  __libc_lock_unlock (lock);
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  __set_errno (save);
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  return result;
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}
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static_link_warning (GETFUNC_NAME)

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