Merge tag 'tty-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

[cascardo/linux.git] / include / linux / fdtable.h

diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
index 82163c4..158a41e 100644 (file)
--- a/include/linux/fdtable.h
+++ b/include/linux/fdtable.h
@@ -21,23 +21,45 @@
  */
 #define NR_OPEN_DEFAULT BITS_PER_LONG
 
-/*
- * The embedded_fd_set is a small fd_set,
- * suitable for most tasks (which open <= BITS_PER_LONG files)
- */
-struct embedded_fd_set {
-       unsigned long fds_bits[1];
-};
-
 struct fdtable {
        unsigned int max_fds;
        struct file __rcu **fd;      /* current fd array */
-       fd_set *close_on_exec;
-       fd_set *open_fds;
+       unsigned long *close_on_exec;
+       unsigned long *open_fds;
        struct rcu_head rcu;
        struct fdtable *next;
 };
 
+static inline void __set_close_on_exec(int fd, struct fdtable *fdt)
+{
+       __set_bit(fd, fdt->close_on_exec);
+}
+
+static inline void __clear_close_on_exec(int fd, struct fdtable *fdt)
+{
+       __clear_bit(fd, fdt->close_on_exec);
+}
+
+static inline bool close_on_exec(int fd, const struct fdtable *fdt)
+{
+       return test_bit(fd, fdt->close_on_exec);
+}
+
+static inline void __set_open_fd(int fd, struct fdtable *fdt)
+{
+       __set_bit(fd, fdt->open_fds);
+}
+
+static inline void __clear_open_fd(int fd, struct fdtable *fdt)
+{
+       __clear_bit(fd, fdt->open_fds);
+}
+
+static inline bool fd_is_open(int fd, const struct fdtable *fdt)
+{
+       return test_bit(fd, fdt->open_fds);
+}
+
 /*
  * Open file table structure
  */
@@ -53,8 +75,8 @@ struct files_struct {
    */
        spinlock_t file_lock ____cacheline_aligned_in_smp;
        int next_fd;
-       struct embedded_fd_set close_on_exec_init;
-       struct embedded_fd_set open_fds_init;
+       unsigned long close_on_exec_init[1];
+       unsigned long open_fds_init[1];
        struct file __rcu * fd_array[NR_OPEN_DEFAULT];
 };