1 /* Copyright (C) 1991, 92, 93, 94, 95, 96 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
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
25 #include <sys/types.h>
28 #include <dirstream.h>
31 /* Read a directory entry from DIRP. */
37 if (dirp
== NULL
|| dirp
->data
== NULL
)
43 __libc_lock_lock (dirp
->lock
);
49 if (dirp
->offset
>= dirp
->size
)
51 /* We've emptied out our buffer. Refill it. */
57 #ifndef _DIRENT_HAVE_D_RECLEN
58 /* Fixed-size struct; must read one at a time (see below). */
61 maxread
= dirp
->allocation
;
65 bytes
= __getdirentries (dirp
->fd
, dirp
->data
, maxread
, &base
);
71 dirp
->size
= (size_t) bytes
;
73 /* Reset the offset into the buffer. */
77 dp
= (struct dirent
*) &dirp
->data
[dirp
->offset
];
79 #ifdef _DIRENT_HAVE_D_RECLEN
80 reclen
= dp
->d_reclen
;
82 /* The only version of `struct dirent' that lacks `d_reclen'
84 assert (sizeof dp
->d_name
> 1);
86 /* The name is not terminated if it is the largest possible size.
87 Clobber the following byte to ensure proper null termination. We
88 read jst one entry at a time above so we know that byte will not
90 dp
->d_name
[sizeof dp
->d_name
] = '\0';
93 dirp
->offset
+= reclen
;
95 #ifdef _DIRENT_HAVE_D_OFF
96 dirp
->filepos
= dp
->d_off
;
98 dirp
->filepos
+= reclen
;
101 /* Skip deleted files. */
102 } while (dp
->d_ino
== 0);
104 __libc_lock_unlock (dirp
->lock
);
108 weak_alias (__readdir
, readdir
)