mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 19:53:59 +08:00
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/*
|
|
* 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;
|
|
int need_put;
|
|
};
|
|
|
|
static inline void fdput(struct fd fd)
|
|
{
|
|
if (fd.need_put)
|
|
fput(fd.file);
|
|
}
|
|
|
|
extern struct file *fget(unsigned int fd);
|
|
extern struct file *fget_light(unsigned int fd, int *fput_needed);
|
|
|
|
static inline struct fd fdget(unsigned int fd)
|
|
{
|
|
int b;
|
|
struct file *f = fget_light(fd, &b);
|
|
return (struct fd){f,b};
|
|
}
|
|
|
|
extern struct file *fget_raw(unsigned int fd);
|
|
extern struct file *fget_raw_light(unsigned int fd, int *fput_needed);
|
|
|
|
static inline struct fd fdget_raw(unsigned int fd)
|
|
{
|
|
int b;
|
|
struct file *f = fget_raw_light(fd, &b);
|
|
return (struct fd){f,b};
|
|
}
|
|
|
|
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);
|
|
#define get_unused_fd() get_unused_fd_flags(0)
|
|
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 */
|