take close-on-exec logics to fs/file.c, clean it up a bit
... and add cond_resched() there, while we are at it. We can
get large latencies as is...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/file.c b/fs/file.c
index fd4694e..92197dd 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -652,6 +652,43 @@
return -EBADF;
}
+void do_close_on_exec(struct files_struct *files)
+{
+ unsigned i;
+ struct fdtable *fdt;
+
+ /* exec unshares first */
+ BUG_ON(atomic_read(&files->count) != 1);
+ spin_lock(&files->file_lock);
+ for (i = 0; ; i++) {
+ unsigned long set;
+ unsigned fd = i * BITS_PER_LONG;
+ fdt = files_fdtable(files);
+ if (fd >= fdt->max_fds)
+ break;
+ set = fdt->close_on_exec[i];
+ if (!set)
+ continue;
+ fdt->close_on_exec[i] = 0;
+ for ( ; set ; fd++, set >>= 1) {
+ struct file *file;
+ if (!(set & 1))
+ continue;
+ file = fdt->fd[fd];
+ if (!file)
+ continue;
+ rcu_assign_pointer(fdt->fd[fd], NULL);
+ __put_unused_fd(files, fd);
+ spin_unlock(&files->file_lock);
+ filp_close(file, files);
+ cond_resched();
+ spin_lock(&files->file_lock);
+ }
+
+ }
+ spin_unlock(&files->file_lock);
+}
+
struct file *fget(unsigned int fd)
{
struct file *file;