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017678433c
When glibc is built with --enable-static-nss, the warning that using NSS symbols requires the nss shared objects to be present is no longer true, as those symbols are built into libc. Suppress the warning for those symbols by providing a new macro (nss_interface_function) for the NSS functions that is defined as static_link_warning in the normal case, and empty for static NSS.
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/* 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, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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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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nss_interface_function (GETFUNC_NAME)
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