/* * Wrapper functions for accessing the file_struct fd array. */#ifndef __LINUX_FILE_H#define __LINUX_FILE_Hextern void __fput(struct file *);/* * Check whether the specified task has the fd open. Since the task * may not have a files_struct, we must test for p->files != NULL. */extern inline struct file * fcheck_task(struct task_struct *p, unsigned int fd){	struct file * file = NULL;	if (p->files && fd < p->files->max_fds)		file = p->files->fd[fd];	return file;}/* * Check whether the specified fd has an open file. */extern inline struct file * fcheck(unsigned int fd){	struct file * file = NULL;	if (fd < current->files->max_fds)		file = current->files->fd[fd];	return file;}extern inline struct file * fget(unsigned int fd){	struct file * file = fcheck(fd);	if (file)		file->f_count++;	return file;}/* * Install a file pointer in the fd array. */extern inline void fd_install(unsigned int fd, struct file *file){	current->files->fd[fd] = file;}/* * 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>:  *  * Since those functions where calling other functions, it was compleatly  * bogous to make them all "extern inline". * * The removal of this pseudo optimization saved me scandaleous: * * 		3756 (i386 arch)  * * precious bytes from my kernel, even without counting all the code compiled * as module! * * I suspect there are many other similar "optimizations" across the * kernel... */extern void fput(struct file *file); extern void put_filp(struct file *file);#endif