1 files changed, 76 insertions, 0 deletions
diff --git a/kernel/include/linux/file.h b/kernel/include/linux/file.h
new file mode 100644
index 000000000..f87d30882
--- /dev/null
+++ b/kernel/include/linux/file.h
@@ -0,0 +1,76 @@
+/*
+ * Wrapper functions for accessing the file_struct fd array.
+ */
+
+#ifndef __LINUX_FILE_H
+#define __LINUX_FILE_H
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <linux/posix_types.h>
+
+struct file;
+
+extern void fput(struct file *);
+
+struct file_operations;
+struct vfsmount;
+struct dentry;
+struct path;
+extern struct file *alloc_file(struct path *, fmode_t mode,
+	const struct file_operations *fop);
+
+static inline void fput_light(struct file *file, int fput_needed)
+{
+	if (fput_needed)
+		fput(file);
+}
+
+struct fd {
+	struct file *file;
+	unsigned int flags;
+};
+#define FDPUT_FPUT       1
+#define FDPUT_POS_UNLOCK 2
+
+static inline void fdput(struct fd fd)
+{
+	if (fd.flags & FDPUT_FPUT)
+		fput(fd.file);
+}
+
+extern struct file *fget(unsigned int fd);
+extern struct file *fget_raw(unsigned int fd);
+extern unsigned long __fdget(unsigned int fd);
+extern unsigned long __fdget_raw(unsigned int fd);
+extern unsigned long __fdget_pos(unsigned int fd);
+
+static inline struct fd __to_fd(unsigned long v)
+{
+	return (struct fd){(struct file *)(v & ~3),v & 3};
+}
+
+static inline struct fd fdget(unsigned int fd)
+{
+	return __to_fd(__fdget(fd));
+}
+
+static inline struct fd fdget_raw(unsigned int fd)
+{
+	return __to_fd(__fdget_raw(fd));
+}
+
+extern int f_dupfd(unsigned int from, struct file *file, unsigned flags);
+extern int replace_fd(unsigned fd, struct file *file, unsigned flags);
+extern void set_close_on_exec(unsigned int fd, int flag);
+extern bool get_close_on_exec(unsigned int fd);
+extern void put_filp(struct file *);
+extern int get_unused_fd_flags(unsigned flags);
+extern void put_unused_fd(unsigned int fd);
+
+extern void fd_install(unsigned int fd, struct file *file);
+
+extern void flush_delayed_fput(void);
+extern void __fput_sync(struct file *);
+
+#endif /* __LINUX_FILE_H */