1 files changed, 29 insertions, 18 deletions

diff --git a/fs/fcntl.c b/fs/fcntl.c
index 6fbc9d8..bfecc62 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -24,20 +24,24 @@
 void fastcall set_close_on_exec(unsigned int fd, int flag)
 {
 	struct files_struct *files = current->files;
+	struct fdtable *fdt;
 	spin_lock(&files->file_lock);
+	fdt = files_fdtable(files);
 	if (flag)
-		FD_SET(fd, files->close_on_exec);
+		FD_SET(fd, fdt->close_on_exec);
 	else
-		FD_CLR(fd, files->close_on_exec);
+		FD_CLR(fd, fdt->close_on_exec);
 	spin_unlock(&files->file_lock);
 }
 
 static inline int get_close_on_exec(unsigned int fd)
 {
 	struct files_struct *files = current->files;
+	struct fdtable *fdt;
 	int res;
 	spin_lock(&files->file_lock);
-	res = FD_ISSET(fd, files->close_on_exec);
+	fdt = files_fdtable(files);
+	res = FD_ISSET(fd, fdt->close_on_exec);
 	spin_unlock(&files->file_lock);
 	return res;
 }
@@ -54,24 +58,26 @@ static int locate_fd(struct files_struct *files,
 	unsigned int newfd;
 	unsigned int start;
 	int error;
+	struct fdtable *fdt;
 
 	error = -EINVAL;
 	if (orig_start >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
 		goto out;
 
+	fdt = files_fdtable(files);
 repeat:
 	/*
 	 * Someone might have closed fd's in the range
-	 * orig_start..files->next_fd
+	 * orig_start..fdt->next_fd
 	 */
 	start = orig_start;
-	if (start < files->next_fd)
-		start = files->next_fd;
+	if (start < fdt->next_fd)
+		start = fdt->next_fd;
 
 	newfd = start;
-	if (start < files->max_fdset) {
-		newfd = find_next_zero_bit(files->open_fds->fds_bits,
-			files->max_fdset, start);
+	if (start < fdt->max_fdset) {
+		newfd = find_next_zero_bit(fdt->open_fds->fds_bits,
+			fdt->max_fdset, start);
 	}
 	
 	error = -EMFILE;
@@ -89,8 +95,8 @@ repeat:
 	if (error)
 		goto repeat;
 
-	if (start <= files->next_fd)
-		files->next_fd = newfd + 1;
+	if (start <= fdt->next_fd)
+		fdt->next_fd = newfd + 1;
 	
 	error = newfd;
 	
@@ -101,13 +107,16 @@ out:
 static int dupfd(struct file *file, unsigned int start)
 {
 	struct files_struct * files = current->files;
+	struct fdtable *fdt;
 	int fd;
 
 	spin_lock(&files->file_lock);
 	fd = locate_fd(files, file, start);
 	if (fd >= 0) {
-		FD_SET(fd, files->open_fds);
-		FD_CLR(fd, files->close_on_exec);
+		/* locate_fd() may have expanded fdtable, load the ptr */
+		fdt = files_fdtable(files);
+		FD_SET(fd, fdt->open_fds);
+		FD_CLR(fd, fdt->close_on_exec);
 		spin_unlock(&files->file_lock);
 		fd_install(fd, file);
 	} else {
@@ -123,6 +132,7 @@ asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd)
 	int err = -EBADF;
 	struct file * file, *tofree;
 	struct files_struct * files = current->files;
+	struct fdtable *fdt;
 
 	spin_lock(&files->file_lock);
 	if (!(file = fcheck(oldfd)))
@@ -148,13 +158,14 @@ asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd)
 
 	/* Yes. It's a race. In user space. Nothing sane to do */
 	err = -EBUSY;
-	tofree = files->fd[newfd];
-	if (!tofree && FD_ISSET(newfd, files->open_fds))
+	fdt = files_fdtable(files);
+	tofree = fdt->fd[newfd];
+	if (!tofree && FD_ISSET(newfd, fdt->open_fds))
 		goto out_fput;
 
-	files->fd[newfd] = file;
-	FD_SET(newfd, files->open_fds);
-	FD_CLR(newfd, files->close_on_exec);
+	fdt->fd[newfd] = file;
+	FD_SET(newfd, fdt->open_fds);
+	FD_CLR(newfd, fdt->close_on_exec);
 	spin_unlock(&files->file_lock);
 
 	if (tofree)