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author | Jeff Johnston <jjohnstn@redhat.com> | 2002-07-23 19:40:45 +0000 |
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committer | Jeff Johnston <jjohnstn@redhat.com> | 2002-07-23 19:40:45 +0000 |
commit | bc10065533261fbde738caea2096b2bac81a970b (patch) | |
tree | fa6331544d9f8fb21b59685f241716ffd818e894 /newlib/libc/sys/linux/readdir64.c | |
parent | 010bb8a4a1548252fc0c72943441a2252bc7aca9 (diff) | |
download | cygnal-bc10065533261fbde738caea2096b2bac81a970b.tar.gz cygnal-bc10065533261fbde738caea2096b2bac81a970b.tar.bz2 cygnal-bc10065533261fbde738caea2096b2bac81a970b.zip |
2002-07-23 Jeff Johnston <jjohnstn@redhat.com>
* libc/include/stdio.h: Move fcloseall prototype within
#ifndef _REENT_ONLY section.
* libc/sys/linux/Makefile.am: Add new files.
* libc/sys/linux/Makefile.in: Regenerated.
* libc/sys/linux/sys/stdio.h: Add ctermid prototype.
* libc/sys/linux/sys/unistd.h: Add ttyname_r prototype.
* libc/sys/linux/sys/types.h: Add ino64_t type.
* libc/sys/linux/ctermid.c: New file.
* libc/sys/linux/ttyname_r.c: Ditto.
* libc/sys/linux/readdir64.c: Ditto.
Diffstat (limited to 'newlib/libc/sys/linux/readdir64.c')
-rw-r--r-- | newlib/libc/sys/linux/readdir64.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/readdir64.c b/newlib/libc/sys/linux/readdir64.c new file mode 100644 index 000000000..78fe98e90 --- /dev/null +++ b/newlib/libc/sys/linux/readdir64.c @@ -0,0 +1,97 @@ +/* + * Copyright (c) 1983 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* Modified from newlib/libc/posix/readdir.c */ + +#include <dirent.h> +#include <machine/syscall.h> + +#define __NR___getdents64 __NR_getdents64 + +static _syscall3(int,__getdents64,int,fd,struct dirent64 *,dirp,unsigned int,count) + +/* + * get next entry in a directory. + */ +struct dirent64 * +__readdir64 (dirp) +register DIR *dirp; { + register struct dirent64 *dp; + +#ifdef HAVE_DD_LOCK + __lock_acquire_recursive(dirp->dd_lock); +#endif + + if (dirp->dd_fd == -1) + return NULL; + + for (;;) { + if (dirp->dd_loc == 0) { + dirp->dd_size = __getdents64 (dirp->dd_fd, + (void *)dirp->dd_buf, + dirp->dd_len); + + if (dirp->dd_size <= 0) { +#ifdef HAVE_DD_LOCK + __lock_release_recursive(dirp->dd_lock); +#endif + return NULL; + } + } + if (dirp->dd_loc >= dirp->dd_size) { + dirp->dd_loc = 0; + continue; + } + dp = (struct dirent64 *)(dirp->dd_buf + dirp->dd_loc); + if ((int)dp & 03) { /* bogus pointer check */ +#ifdef HAVE_DD_LOCK + __lock_release_recursive(dirp->dd_lock); +#endif + return NULL; + } + if (dp->d_reclen <= 0 || + dp->d_reclen > dirp->dd_len + 1 - dirp->dd_loc) { +#ifdef HAVE_DD_LOCK + __lock_release_recursive(dirp->dd_lock); +#endif + return NULL; + } + dirp->dd_loc += dp->d_reclen; + if (dp->d_ino == 0) + continue; +#ifdef HAVE_DD_LOCK + __lock_release_recursive(dirp->dd_lock); +#endif + return (dp); + } +} |