mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
3a665531a3
This test can be used to check wheither kernel supports IPC message queue copy and restore features (required by CRIU project). Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Cc: Serge Hallyn <serge.hallyn@canonical.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
#ifndef _LINUX_MSG_H
|
|
#define _LINUX_MSG_H
|
|
|
|
#include <linux/list.h>
|
|
#include <uapi/linux/msg.h>
|
|
|
|
/* one msg_msg structure for each message */
|
|
struct msg_msg {
|
|
struct list_head m_list;
|
|
long m_type;
|
|
int m_ts; /* message text size */
|
|
struct msg_msgseg* next;
|
|
void *security;
|
|
/* the actual message follows immediately */
|
|
};
|
|
|
|
/* one msq_queue structure for each present queue on the system */
|
|
struct msg_queue {
|
|
struct kern_ipc_perm q_perm;
|
|
time_t q_stime; /* last msgsnd time */
|
|
time_t q_rtime; /* last msgrcv time */
|
|
time_t q_ctime; /* last change time */
|
|
unsigned long q_cbytes; /* current number of bytes on queue */
|
|
unsigned long q_qnum; /* number of messages in queue */
|
|
unsigned long q_qbytes; /* max number of bytes on queue */
|
|
pid_t q_lspid; /* pid of last msgsnd */
|
|
pid_t q_lrpid; /* last receive pid */
|
|
|
|
struct list_head q_messages;
|
|
struct list_head q_receivers;
|
|
struct list_head q_senders;
|
|
};
|
|
|
|
/* Helper routines for sys_msgsnd and sys_msgrcv */
|
|
extern long do_msgsnd(int msqid, long mtype, void __user *mtext,
|
|
size_t msgsz, int msgflg);
|
|
extern long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp,
|
|
int msgflg,
|
|
long (*msg_fill)(void __user *, struct msg_msg *,
|
|
size_t));
|
|
|
|
#endif /* _LINUX_MSG_H */
|