auto import from //depot/cupcake/@135843

libc/kernel/common/linux/file.h

@@ -0,0 +1,64 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __LINUX_FILE_H
+#define __LINUX_FILE_H
+
+#include <asm/atomic.h>
+#include <linux/posix_types.h>
+#include <linux/compiler.h>
+#include <linux/spinlock.h>
+#include <linux/rcupdate.h>
+#include <linux/types.h>
+
+#define NR_OPEN_DEFAULT BITS_PER_LONG
+
+struct embedded_fd_set {
+ unsigned long fds_bits[1];
+};
+
+#define EMBEDDED_FD_SET_SIZE (BITS_PER_BYTE * sizeof(struct embedded_fd_set))
+
+struct fdtable {
+ unsigned int max_fds;
+ int max_fdset;
+ struct file ** fd;
+ fd_set *close_on_exec;
+ fd_set *open_fds;
+ struct rcu_head rcu;
+ struct files_struct *free_files;
+ struct fdtable *next;
+};
+
+struct files_struct {
+
+ atomic_t count;
+ struct fdtable *fdt;
+ struct fdtable fdtab;
+
+ 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;
+ struct file * fd_array[NR_OPEN_DEFAULT];
+};
+
+#define files_fdtable(files) (rcu_dereference((files)->fdt))
+
+struct kmem_cache;
+
+#define fcheck(fd) fcheck_files(current->files, fd)
+
+struct task_struct;
+
+struct files_struct *get_files_struct(struct task_struct *);
+
+#endif