Merge branch 'work.ipc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull ipc compat cleanup and 64-bit time_t from Al Viro:
 "IPC copyin/copyout sanitizing, including 64bit time_t work from Deepa
  Dinamani"

* 'work.ipc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  utimes: Make utimes y2038 safe
  ipc: shm: Make shmid_kernel timestamps y2038 safe
  ipc: sem: Make sem_array timestamps y2038 safe
  ipc: msg: Make msg_queue timestamps y2038 safe
  ipc: mqueue: Replace timespec with timespec64
  ipc: Make sys_semtimedop() y2038 safe
  get rid of SYSVIPC_COMPAT on ia64
  semtimedop(): move compat to native
  shmat(2): move compat to native
  msgrcv(2), msgsnd(2): move compat to native
  ipc(2): move compat to native
  ipc: make use of compat ipc_perm helpers
  semctl(): move compat to native
  semctl(): separate all layout-dependent copyin/copyout
  msgctl(): move compat to native
  msgctl(): split the actual work from copyin/copyout
  ipc: move compat shmctl to native
  shmctl: split the work from copyin/copyout

include/linux/audit.h

@@ -351,7 +351,7 @@ extern int __audit_socketcall(int nargs, unsigned long *args);
 extern int __audit_sockaddr(int len, void *addr);
 extern void __audit_fd_pair(int fd1, int fd2);
 extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
-extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
+extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec64 *abs_timeout);
 extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
 extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
 extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
@@ -412,7 +412,7 @@ static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
 	if (unlikely(!audit_dummy_context()))
 		__audit_mq_open(oflag, mode, attr);
 }
-static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
+static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec64 *abs_timeout)
 {
 	if (unlikely(!audit_dummy_context()))
 		__audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
@@ -549,7 +549,7 @@ static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
 { }
 static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
 				     unsigned int msg_prio,
-				     const struct timespec *abs_timeout)
+				     const struct timespec64 *abs_timeout)
 { }
 static inline void audit_mq_notify(mqd_t mqdes,
 				   const struct sigevent *notification)

include/linux/compat.h

@@ -171,15 +171,6 @@ extern int get_compat_itimerspec64(struct itimerspec64 *its,
 extern int put_compat_itimerspec64(const struct itimerspec64 *its,
 			struct compat_itimerspec __user *uits);
 
-/*
- * This function convert a timespec if necessary and returns a *user
- * space* pointer.  If no conversion is necessary, it returns the
- * initial pointer.  NULL is a legitimate argument and will always
- * output NULL.
- */
-extern int compat_convert_timespec(struct timespec __user **,
-				   const void __user *);
-
 struct compat_iovec {
 	compat_uptr_t	iov_base;
 	compat_size_t	iov_len;

include/linux/msg.h

@@ -2,6 +2,7 @@
 #define _LINUX_MSG_H
 
 #include <linux/list.h>
+#include <linux/time64.h>
 #include <uapi/linux/msg.h>
 
 /* one msg_msg structure for each message */
@@ -17,9 +18,9 @@ struct msg_msg {
 /* 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 */
+	time64_t q_stime;		/* last msgsnd time */
+	time64_t q_rtime;		/* last msgrcv time */
+	time64_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 */
@@ -31,12 +32,4 @@ struct msg_queue {
 	struct list_head q_senders;
 } __randomize_layout;
 
-/* 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 */

include/linux/sem.h

@@ -4,6 +4,7 @@
 #include <linux/atomic.h>
 #include <linux/rcupdate.h>
 #include <linux/cache.h>
+#include <linux/time64.h>
 #include <uapi/linux/sem.h>
 
 struct task_struct;
@@ -30,7 +31,7 @@ struct sem {
 /* One sem_array data structure for each set of semaphores in the system. */
 struct sem_array {
 	struct kern_ipc_perm	sem_perm;	/* permissions .. see ipc.h */
-	time_t			sem_ctime;	/* create/last semctl() time */
+	time64_t		sem_ctime;	/* create/last semctl() time */
 	struct list_head	pending_alter;	/* pending operations */
 						/* that alter the array */
 	struct list_head	pending_const;	/* pending complex operations */

include/linux/shm.h

@@ -12,9 +12,9 @@ struct shmid_kernel /* private to the kernel */
 	struct file		*shm_file;
 	unsigned long		shm_nattch;
 	unsigned long		shm_segsz;
-	time_t			shm_atim;
-	time_t			shm_dtim;
-	time_t			shm_ctim;
+	time64_t		shm_atim;
+	time64_t		shm_dtim;
+	time64_t		shm_ctim;
 	pid_t			shm_cprid;
 	pid_t			shm_lprid;
 	struct user_struct	*mlock_user;

include/linux/time.h

@@ -178,7 +178,7 @@ extern int do_setitimer(int which, struct itimerval *value,
 			struct itimerval *ovalue);
 extern int do_getitimer(int which, struct itimerval *value);
 
-extern long do_utimes(int dfd, const char __user *filename, struct timespec *times, int flags);
+extern long do_utimes(int dfd, const char __user *filename, struct timespec64 *times, int flags);
 
 /*
  * Similar to the struct tm in userspace <time.h>, but it needs to be here so