linux-master/fs/readdir.c

18 #include <linux/dirent.h>
122  * POSIX says that a dirent name cannot contain NULL or a '/'.
163  * dirent-structure in size and that the code can't handle more
179 	struct old_linux_dirent __user * dirent;
188 	struct old_linux_dirent __user * dirent;
202 	dirent = buf->dirent;
203 	if (!user_write_access_begin(dirent,
204 			(unsigned long)(dirent->d_name + namlen + 1) -
205 				(unsigned long)dirent))
207 	unsafe_put_user(d_ino, &dirent->d_ino, efault_end);
208 	unsafe_put_user(offset, &dirent->d_offset, efault_end);
209 	unsafe_put_user(namlen, &dirent->d_namlen, efault_end);
210 	unsafe_copy_dirent_name(dirent->d_name, name, namlen, efault_end);
221 		struct old_linux_dirent __user *, dirent, unsigned int, count)
227 		.dirent = dirent
265 	struct linux_dirent __user *dirent, *prev;
287 	dirent = buf->current_dir;
288 	prev = (void __user *) dirent - prev_reclen;
292 	/* This might be 'dirent->d_off', but if so it will get overwritten */
294 	unsafe_put_user(d_ino, &dirent->d_ino, efault_end);
295 	unsafe_put_user(reclen, &dirent->d_reclen, efault_end);
296 	unsafe_put_user(d_type, (char __user *) dirent + reclen - 1, efault_end);
297 	unsafe_copy_dirent_name(dirent->d_name, name, namlen, efault_end);
300 	buf->current_dir = (void __user *)dirent + reclen;
312 		struct linux_dirent __user *, dirent, unsigned int, count)
318 		.current_dir = dirent
353 	struct linux_dirent64 __user *dirent, *prev;
369 	dirent = buf->current_dir;
370 	prev = (void __user *)dirent - prev_reclen;
374 	/* This might be 'dirent->d_off', but if so it will get overwritten */
376 	unsafe_put_user(ino, &dirent->d_ino, efault_end);
377 	unsafe_put_user(reclen, &dirent->d_reclen, efault_end);
378 	unsafe_put_user(d_type, &dirent->d_type, efault_end);
379 	unsafe_copy_dirent_name(dirent->d_name, name, namlen, efault_end);
383 	buf->current_dir = (void __user *)dirent + reclen;
395 		struct linux_dirent64 __user *, dirent, unsigned int, count)
401 		.current_dir = dirent
436 	struct compat_old_linux_dirent __user *dirent;
446 	struct compat_old_linux_dirent __user *dirent;
460 	dirent = buf->dirent;
461 	if (!user_write_access_begin(dirent,
462 			(unsigned long)(dirent->d_name + namlen + 1) -
463 				(unsigned long)dirent))
465 	unsafe_put_user(d_ino, &dirent->d_ino, efault_end);
466 	unsafe_put_user(offset, &dirent->d_offset, efault_end);
467 	unsafe_put_user(namlen, &dirent->d_namlen, efault_end);
468 	unsafe_copy_dirent_name(dirent->d_name, name, namlen, efault_end);
479 		struct compat_old_linux_dirent __user *, dirent, unsigned int, count)
485 		.dirent = dirent
517 	struct compat_linux_dirent __user *dirent, *prev;
539 	dirent = buf->current_dir;
540 	prev = (void __user *) dirent - prev_reclen;
545 	unsafe_put_user(d_ino, &dirent->d_ino, efault_end);
546 	unsafe_put_user(reclen, &dirent->d_reclen, efault_end);
547 	unsafe_put_user(d_type, (char __user *) dirent + reclen - 1, efault_end);
548 	unsafe_copy_dirent_name(dirent->d_name, name, namlen, efault_end);
552 	buf->current_dir = (void __user *)dirent + reclen;
563 		struct compat_linux_dirent __user *, dirent, unsigned int, count)
568 		.current_dir = dirent,