compat.c File Reference

#include <linux/kernel.h>
#include <linux/gfp.h>
#include <linux/fs.h>
#include <linux/types.h>
#include <linux/file.h>
#include <linux/icmpv6.h>
#include <linux/socket.h>
#include <linux/syscalls.h>
#include <linux/filter.h>
#include <linux/compat.h>
#include <linux/security.h>
#include <linux/export.h>
#include <net/scm.h>
#include <net/sock.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <asm/uaccess.h>
#include <net/compat.h>

Go to the source code of this file.

Data Structures
struct	compat_group_req
struct	compat_group_source_req
struct	compat_group_filter

Macros
#define	CMSG_COMPAT_ALIGN(len)   ALIGN((len), sizeof(s32))
#define	CMSG_COMPAT_DATA(cmsg)   ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))))
#define	CMSG_COMPAT_SPACE(len)   (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len))
#define	CMSG_COMPAT_LEN(len)   (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len))
#define	CMSG_COMPAT_FIRSTHDR(msg)
#define	CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr)
#define	__COMPAT_GF0_SIZE
#define	AL(x)   ((x) * sizeof(u32))

Functions
int	get_compat_msghdr (struct msghdr *kmsg, struct compat_msghdr __user *umsg)
int	verify_compat_iovec (struct msghdr *kern_msg, struct iovec *kern_iov, struct sockaddr_storage *kern_address, int mode)
int	cmsghdr_from_user_compat_to_kern (struct msghdr *kmsg, struct sock *sk, unsigned char *stackbuf, int stackbuf_size)
int	put_cmsg_compat (struct msghdr *kmsg, int level, int type, int len, void *data)
void	scm_detach_fds_compat (struct msghdr *kmsg, struct scm_cookie *scm)
asmlinkage long	compat_sys_setsockopt (int fd, int level, int optname, char __user *optval, unsigned int optlen)
int	compat_sock_get_timestamp (struct sock *sk, struct timeval __user *userstamp)
	EXPORT_SYMBOL (compat_sock_get_timestamp)
int	compat_sock_get_timestampns (struct sock *sk, struct timespec __user *userstamp)
	EXPORT_SYMBOL (compat_sock_get_timestampns)
asmlinkage long	compat_sys_getsockopt (int fd, int level, int optname, char __user *optval, int __user *optlen)
int	compat_mc_setsockopt (struct sock *sock, int level, int optname, char __user *optval, unsigned int optlen, int(*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
	EXPORT_SYMBOL (compat_mc_setsockopt)
int	compat_mc_getsockopt (struct sock *sock, int level, int optname, char __user *optval, int __user *optlen, int(*getsockopt)(struct sock *, int, int, char __user *, int __user *))
	EXPORT_SYMBOL (compat_mc_getsockopt)
asmlinkage long	compat_sys_sendmsg (int fd, struct compat_msghdr __user *msg, unsigned int flags)
asmlinkage long	compat_sys_sendmmsg (int fd, struct compat_mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags)
asmlinkage long	compat_sys_recvmsg (int fd, struct compat_msghdr __user *msg, unsigned int flags)
asmlinkage long	compat_sys_recv (int fd, void __user *buf, size_t len, unsigned int flags)
asmlinkage long	compat_sys_recvfrom (int fd, void __user *buf, size_t len, unsigned int flags, struct sockaddr __user *addr, int __user *addrlen)
asmlinkage long	compat_sys_recvmmsg (int fd, struct compat_mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, struct compat_timespec __user *timeout)
asmlinkage long	compat_sys_socketcall (int call, u32 __user *args)

Variables
struct compat_group_req	__packed

Macro Definition Documentation

#define __COMPAT_GF0_SIZE

Value:

(sizeof(struct compat_group_filter) - \
            sizeof(struct __kernel_sockaddr_storage))

Definition at line 555 of file compat.c.

#define AL

(

x

)

((x) * sizeof(u32))

Definition at line 726 of file compat.c.

#define CMSG_COMPAT_ALIGN

(

len

)

ALIGN((len), sizeof(s32))

Definition at line 108 of file compat.c.

#define CMSG_COMPAT_DATA

(

cmsg

)

((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))))

Definition at line 110 of file compat.c.

#define CMSG_COMPAT_FIRSTHDR

(

msg

)

Value:

(((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
     (struct compat_cmsghdr __user *)((msg)->msg_control) :     \
     (struct compat_cmsghdr __user *)NULL)

Definition at line 117 of file compat.c.

#define CMSG_COMPAT_LEN

(

len

)

(CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len))

Definition at line 114 of file compat.c.

#define CMSG_COMPAT_OK	(		ucmlen,
			ucmsg,
			mhdr
	)

Value:

((ucmlen) >= sizeof(struct compat_cmsghdr) && \
     (ucmlen) <= (unsigned long) \
     ((mhdr)->msg_controllen - \
      ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))

Definition at line 122 of file compat.c.

#define CMSG_COMPAT_SPACE

(

len

)

(CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len))

Definition at line 112 of file compat.c.

Function Documentation

int cmsghdr_from_user_compat_to_kern	(	struct msghdr *	kmsg,
		struct sock *	sk,
		unsigned char *	stackbuf,
		int	stackbuf_size
	)

Definition at line 142 of file compat.c.

int compat_mc_getsockopt	(	struct sock *	sock,
		int	level,
		int	optname,
		char __user *	optval,
		int __user *	optlen,
		int(*)(struct sock *, int, int, char __user *, int __user *)	getsockopt
	)

Definition at line 646 of file compat.c.

int compat_mc_setsockopt	(	struct sock *	sock,
		int	level,
		int	optname,
		char __user *	optval,
		unsigned int	optlen,
		int(*)(struct sock *, int, int, char __user *, unsigned int)	setsockopt
	)

Definition at line 559 of file compat.c.

int compat_sock_get_timestamp	(	struct sock *	sk,
		struct timeval __user *	userstamp
	)

Definition at line 448 of file compat.c.

int compat_sock_get_timestampns	(	struct sock *	sk,
		struct timespec __user *	userstamp
	)

Definition at line 476 of file compat.c.

asmlinkage long compat_sys_getsockopt	(	int	fd,
		int	level,
		int	optname,
		char __user *	optval,
		int __user *	optlen
	)

Definition at line 504 of file compat.c.

asmlinkage long compat_sys_recv	(	int	fd,
		void __user *	buf,
		size_t	len,
		unsigned int	flags
	)

Definition at line 752 of file compat.c.

asmlinkage long compat_sys_recvfrom	(	int	fd,
		void __user *	buf,
		size_t	len,
		unsigned int	flags,
		struct sockaddr __user *	addr,
		int __user *	addrlen
	)

Definition at line 757 of file compat.c.

asmlinkage long compat_sys_recvmmsg	(	int	fd,
		struct compat_mmsghdr __user *	mmsg,
		unsigned int	vlen,
		unsigned int	flags,
		struct compat_timespec __user *	timeout
	)

Definition at line 764 of file compat.c.

asmlinkage long compat_sys_recvmsg	(	int	fd,
		struct compat_msghdr __user *	msg,
		unsigned int	flags
	)

Definition at line 747 of file compat.c.

asmlinkage long compat_sys_sendmmsg	(	int	fd,
		struct compat_mmsghdr __user *	mmsg,
		unsigned int	vlen,
		unsigned int	flags
	)

Definition at line 740 of file compat.c.

asmlinkage long compat_sys_sendmsg	(	int	fd,
		struct compat_msghdr __user *	msg,
		unsigned int	flags
	)

Definition at line 735 of file compat.c.

asmlinkage long compat_sys_setsockopt	(	int	fd,
		int	level,
		int	optname,
		char __user *	optval,
		unsigned int	optlen
	)

Definition at line 384 of file compat.c.

asmlinkage long compat_sys_socketcall	(	int	call,
		u32 __user *	args
	)

Definition at line 791 of file compat.c.

EXPORT_SYMBOL

(

compat_sock_get_timestamp

)

EXPORT_SYMBOL

(

compat_sock_get_timestampns

)

EXPORT_SYMBOL

(

compat_mc_setsockopt

)

EXPORT_SYMBOL

(

compat_mc_getsockopt

)

int get_compat_msghdr	(	struct msghdr *	kmsg,
		struct compat_msghdr __user *	umsg
	)

Definition at line 61 of file compat.c.

int put_cmsg_compat	(	struct msghdr *	kmsg,
		int	level,
		int	type,
		int	len,
		void *	data
	)

Definition at line 220 of file compat.c.

void scm_detach_fds_compat	(	struct msghdr *	kmsg,
		struct scm_cookie *	scm
	)

Definition at line 276 of file compat.c.

int verify_compat_iovec	(	struct msghdr *	kern_msg,
		struct iovec *	kern_iov,
		struct sockaddr_storage *	kern_address,
		int	mode
	)

Definition at line 81 of file compat.c.

Variable Documentation

struct compat_group_filter __packed