Contributors: 19
Author Tokens Token Proportion Commits Commit Proportion
Al Viro 295 47.97% 16 30.19%
Linus Torvalds (pre-git) 63 10.24% 13 24.53%
Harvey Harrison 56 9.11% 1 1.89%
Kees Cook 48 7.80% 4 7.55%
Linus Torvalds 30 4.88% 3 5.66%
Peter Zijlstra 29 4.72% 1 1.89%
Sargun Dhillon 19 3.09% 1 1.89%
Andrew Morton 17 2.76% 1 1.89%
Dave Hansen 17 2.76% 1 1.89%
Christoph Hellwig 14 2.28% 3 5.66%
Jens Axboe 10 1.63% 1 1.89%
Ulrich Drepper 7 1.14% 1 1.89%
Dave Jones 2 0.33% 1 1.89%
Xie Yongji 2 0.33% 1 1.89%
Eric Dumazet 2 0.33% 1 1.89%
Alexey Dobriyan 1 0.16% 1 1.89%
Miklos Szeredi 1 0.16% 1 1.89%
Andi Kleen 1 0.16% 1 1.89%
Greg Kroah-Hartman 1 0.16% 1 1.89%
Total 615 53


/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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>
#include <linux/errno.h>
#include <linux/cleanup.h>

struct file;

extern void fput(struct file *);

struct file_operations;
struct task_struct;
struct vfsmount;
struct dentry;
struct inode;
struct path;
extern struct file *alloc_file_pseudo(struct inode *, struct vfsmount *,
	const char *, int flags, const struct file_operations *);
extern struct file *alloc_file_clone(struct file *, int flags,
	const struct file_operations *);

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 struct file *fget_task(struct task_struct *task, 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);
extern void __f_unlock_pos(struct file *);

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));
}

static inline struct fd fdget_pos(int fd)
{
	return __to_fd(__fdget_pos(fd));
}

static inline void fdput_pos(struct fd f)
{
	if (f.flags & FDPUT_POS_UNLOCK)
		__f_unlock_pos(f.file);
	fdput(f);
}

DEFINE_CLASS(fd, struct fd, fdput(_T), fdget(fd), int 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 int __get_unused_fd_flags(unsigned flags, unsigned long nofile);
extern int get_unused_fd_flags(unsigned flags);
extern void put_unused_fd(unsigned int fd);

DEFINE_CLASS(get_unused_fd, int, if (_T >= 0) put_unused_fd(_T),
	     get_unused_fd_flags(flags), unsigned flags)

extern void fd_install(unsigned int fd, struct file *file);

extern int __receive_fd(struct file *file, int __user *ufd,
			unsigned int o_flags);

extern int receive_fd(struct file *file, unsigned int o_flags);

static inline int receive_fd_user(struct file *file, int __user *ufd,
				  unsigned int o_flags)
{
	if (ufd == NULL)
		return -EFAULT;
	return __receive_fd(file, ufd, o_flags);
}
int receive_fd_replace(int new_fd, struct file *file, unsigned int o_flags);

extern void flush_delayed_fput(void);
extern void __fput_sync(struct file *);

extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max;

#endif /* __LINUX_FILE_H */