aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/fdtable.h
diff options
context:
space:
mode:
authorKalle Valo <kvalo@qca.qualcomm.com>2012-06-14 14:20:18 +0300
committerKalle Valo <kvalo@qca.qualcomm.com>2012-06-14 14:44:49 +0300
commitd987dd137bac8dca9b0015763d3106f48bb8a596 (patch)
treeef887505b3c904c548d58ec9bb6f4970a0877042 /include/linux/fdtable.h
parentath6kl: fix fw capability parsing (diff)
parentMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless (diff)
Merge remote branch 'wireless-next/master' into ath6kl-next
Conflicts: drivers/net/wireless/ath/ath6kl/cfg80211.c
Diffstat (limited to 'include/linux/fdtable.h')
-rw-r--r--include/linux/fdtable.h46
1 files changed, 34 insertions, 12 deletions
diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
index 82163c4b32c9..158a41eed314 100644
--- 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];
};