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author | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
commit | a27d2baa0c1a2ec70f47ea9199b1dd6762c8a349 (patch) | |
tree | defd1cc07d16ad2f3b21154114e092d11c94c5bb /libc/kernel/common/linux/file.h | |
download | bionic-a27d2baa0c1a2ec70f47ea9199b1dd6762c8a349.zip bionic-a27d2baa0c1a2ec70f47ea9199b1dd6762c8a349.tar.gz bionic-a27d2baa0c1a2ec70f47ea9199b1dd6762c8a349.tar.bz2 |
Initial Contributionandroid-1.0
Diffstat (limited to 'libc/kernel/common/linux/file.h')
-rw-r--r-- | libc/kernel/common/linux/file.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/libc/kernel/common/linux/file.h b/libc/kernel/common/linux/file.h new file mode 100644 index 0000000..87e570b --- /dev/null +++ b/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 |