diff options
| -rw-r--r-- | lib/fdopendir-glibc.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/lib/fdopendir-glibc.c b/lib/fdopendir-glibc.c deleted file mode 100644 index 1e6a460e9..000000000 --- a/lib/fdopendir-glibc.c +++ /dev/null @@ -1,136 +0,0 @@ -/* fdopendir implementation derived from glibc. - - Copyright (C) 2006, 2009 Free Software Foundation, Inc. - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. */ - -#include <config.h> - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <stdbool.h> -#include <dirent.h> -#include <errno.h> -#include <fcntl.h> -#include <sys/stat.h> - -#if _LIBC -# include <dirstream.h> -# include <not-cancel.h> - -#else - -# if __GNUC__ < 3 -# define __builtin_expect(expr, expected_val) expr -# endif - -# include "openat.h" -# define stat64 stat -# define dirent64 dirent -# define __fxstat64(V, fd, sb) fstat(fd, sb) -# define __fcntl fcntl -# define __set_errno(Val) do { errno = (Val); } while (0) -# define __libc_lock_init(NAME) ((NAME) = 0, 0) -# define close_not_cancel_no_status(fd) close (fd) -# ifdef __i386__ -# define internal_function __attribute ((regparm (3), stdcall)) -# else -# define internal_function -# endif - -struct __dirstream - { - int fd; /* File descriptor. */ - - char *data; /* Directory block. */ - size_t allocation; /* Space allocated for the block. */ - size_t size; /* Total valid data in the block. */ - size_t offset; /* Current offset into the block. */ - - off_t filepos; /* Position of next entry to read. */ - int lock; - }; -#endif - -#undef _STATBUF_ST_BLKSIZE - -static DIR * -internal_function -__alloc_dir (int fd, bool close_fd) -{ - if (__builtin_expect (__fcntl (fd, F_SETFD, FD_CLOEXEC), 0) < 0) - goto lose; - - size_t allocation; -#ifdef _STATBUF_ST_BLKSIZE - if (__builtin_expect ((size_t) statp->st_blksize >= sizeof (struct dirent64), - 1)) - allocation = statp->st_blksize; - else -#endif - allocation = (BUFSIZ < sizeof (struct dirent64) - ? sizeof (struct dirent64) : BUFSIZ); - - const int pad = -sizeof (DIR) % __alignof__ (struct dirent64); - - DIR *dirp = (DIR *) malloc (sizeof (DIR) + allocation + pad); - if (dirp == NULL) - lose: - { - if (close_fd) - { - int save_errno = errno; - close_not_cancel_no_status (fd); - __set_errno (save_errno); - } - return NULL; - } - memset (dirp, '\0', sizeof (DIR)); - dirp->data = (char *) (dirp + 1) + pad; - dirp->allocation = allocation; - dirp->fd = fd; - - __libc_lock_init (dirp->lock); - - return dirp; -} - -DIR * -fdopendir (int fd) -{ -#if 0 - struct stat64 statbuf; - - if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &statbuf), 0) < 0) - return NULL; - if (__builtin_expect (! S_ISDIR (statbuf.st_mode), 0)) - { - __set_errno (ENOTDIR); - return NULL; - } - /* Make sure the descriptor allows for reading. */ - int flags = __fcntl (fd, F_GETFL); - if (__builtin_expect (flags == -1, 0)) - return NULL; - if (__builtin_expect ((flags & O_ACCMODE) == O_WRONLY, 0)) - { - __set_errno (EINVAL); - return NULL; - } -#endif - - return __alloc_dir (fd, false); -} |