diff options
author | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
---|---|---|
committer | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
commit | 28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch) | |
tree | 15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/unix/bsd/readdir.c | |
download | glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.gz glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.xz glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.zip |
initial import
Diffstat (limited to 'sysdeps/unix/bsd/readdir.c')
-rw-r--r-- | sysdeps/unix/bsd/readdir.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sysdeps/unix/bsd/readdir.c b/sysdeps/unix/bsd/readdir.c new file mode 100644 index 0000000000..e86a94dd52 --- /dev/null +++ b/sysdeps/unix/bsd/readdir.c @@ -0,0 +1,70 @@ +/* Copyright (C) 1991, 1992, 1993, 1994 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <errno.h> +#include <limits.h> +#include <stddef.h> +#include <string.h> +#include <dirent.h> +#include <unistd.h> +#include <sys/types.h> +#include "direct.h" + + +/* Read a directory entry from DIRP. */ +struct dirent * +DEFUN(readdir, (dirp), DIR *dirp) +{ + struct dirent *dp; + + if (dirp == NULL || dirp->__data == NULL) + { + errno = EINVAL; + return NULL; + } + + do + { + if (dirp->__offset >= dirp->__size) + { + /* We've emptied out our buffer. Refill it. */ + + ssize_t bytes = __getdirentries (dirp->__fd, dirp->__data, + dirp->__allocation, &dirp->__pos); + if (bytes <= 0) + return NULL; + dirp->__size = (size_t) bytes; + + /* Reset the offset into the buffer. */ + dirp->__offset = 0; + } + + dp = (struct dirent *) &dirp->__data[dirp->__offset]; + dirp->__offset += dp->d_reclen; + +#ifndef HAVE_D_TYPE + dp->d_namlen = ((struct direct *) dp)->d_namlen; + dp->d_type = DT_UNKNOWN; +#endif + + /* Loop to ignore deleted files. */ + } while (dp->d_fileno == 0); + + return dp; +} |