| /**************************************************************************** |
| **************************************************************************** |
| *** |
| *** 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 |