1 /* Copyright (C) 1991, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
20 #include <bits/libc-lock.h>
26 /* We need to protect the dynamic buffer handling. */
27 __libc_lock_define_initialized (static, lock
);
31 /* Read one entry from the given stream. */
33 fgetpwent (FILE *stream
)
35 static size_t buffer_size
;
36 static struct passwd resbuf
;
38 struct passwd
*result
;
41 if (fgetpos (stream
, &pos
) != 0)
45 __libc_lock_lock (lock
);
47 /* Allocate buffer if not yet available. */
50 buffer_size
= NSS_BUFLEN_PASSWD
;
51 buffer
= malloc (buffer_size
);
55 && (__fgetpwent_r (stream
, &resbuf
, buffer
, buffer_size
, &result
)
59 buffer_size
+= NSS_BUFLEN_PASSWD
;
60 new_buf
= realloc (buffer
, buffer_size
);
63 /* We are out of memory. Free the current buffer so that the
64 process gets a chance for a normal termination. */
71 /* Reset the stream. */
72 if (fsetpos (stream
, &pos
) != 0)
79 /* Release lock. Preserve error value. */
81 __libc_lock_unlock (lock
);
88 /* Free all resources if necessary. */
89 static void __attribute__ ((unused
))
95 text_set_element (__libc_subfreeres
, free_mem
);