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
JerzyD72 · Sep 15, 2017 · cc73fee · cc73fee
2 parents e7cdb60 + aaed2dd
commit cc73fee
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Showing 19 changed files with 1,044 additions and 1,195 deletions.
diff --git a/arch/ia64/Kconfig.debug b/arch/ia64/Kconfig.debug
@@ -56,9 +56,4 @@ config IA64_DEBUG_IRQ
 	  and restore instructions.  It's useful for tracking down spinlock
 	  problems, but slow!  If you're unsure, select N.
 
-config SYSVIPC_COMPAT
-	bool
-	depends on COMPAT && SYSVIPC
-	default y
-
 endmenu
diff --git a/fs/utimes.c b/fs/utimes.c
@@ -22,7 +22,7 @@
  */
 SYSCALL_DEFINE2(utime, char __user *, filename, struct utimbuf __user *, times)
 {
-	struct timespec tv[2];
+	struct timespec64 tv[2];
 
 	if (times) {
 		if (get_user(tv[0].tv_sec, &times->actime) ||
@@ -44,7 +44,7 @@ static bool nsec_valid(long nsec)
 	return nsec >= 0 && nsec <= 999999999;
 }
 
-static int utimes_common(const struct path *path, struct timespec *times)
+static int utimes_common(const struct path *path, struct timespec64 *times)
 {
 	int error;
 	struct iattr newattrs;
@@ -115,7 +115,7 @@ static int utimes_common(const struct path *path, struct timespec *times)
  * must be owner or have write permission.
  * Else, update from *times, must be owner or super user.
  */
-long do_utimes(int dfd, const char __user *filename, struct timespec *times,
+long do_utimes(int dfd, const char __user *filename, struct timespec64 *times,
 	       int flags)
 {
 	int error = -EINVAL;
@@ -167,10 +167,11 @@ long do_utimes(int dfd, const char __user *filename, struct timespec *times,
 SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename,
 		struct timespec __user *, utimes, int, flags)
 {
-	struct timespec tstimes[2];
+	struct timespec64 tstimes[2];
 
 	if (utimes) {
-		if (copy_from_user(&tstimes, utimes, sizeof(tstimes)))
+		if ((get_timespec64(&tstimes[0], &utimes[0]) ||
+			get_timespec64(&tstimes[1], &utimes[1])))
 			return -EFAULT;
 
 		/* Nothing to do, we must not even check the path.  */
@@ -186,7 +187,7 @@ SYSCALL_DEFINE3(futimesat, int, dfd, const char __user *, filename,
 		struct timeval __user *, utimes)
 {
 	struct timeval times[2];
-	struct timespec tstimes[2];
+	struct timespec64 tstimes[2];
 
 	if (utimes) {
 		if (copy_from_user(&times, utimes, sizeof(times)))
@@ -224,7 +225,7 @@ SYSCALL_DEFINE2(utimes, char __user *, filename,
 COMPAT_SYSCALL_DEFINE2(utime, const char __user *, filename,
 		       struct compat_utimbuf __user *, t)
 {
-	struct timespec tv[2];
+	struct timespec64 tv[2];
 
 	if (t) {
 		if (get_user(tv[0].tv_sec, &t->actime) ||
@@ -238,11 +239,11 @@ COMPAT_SYSCALL_DEFINE2(utime, const char __user *, filename,
 
 COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filename, struct compat_timespec __user *, t, int, flags)
 {
-	struct timespec tv[2];
+	struct timespec64 tv[2];
 
 	if  (t) {
-		if (compat_get_timespec(&tv[0], &t[0]) ||
-		    compat_get_timespec(&tv[1], &t[1]))
+		if (compat_get_timespec64(&tv[0], &t[0]) ||
+		    compat_get_timespec64(&tv[1], &t[1]))
 			return -EFAULT;
 
 		if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT)
@@ -253,7 +254,7 @@ COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filena
 
 COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, const char __user *, filename, struct compat_timeval __user *, t)
 {
-	struct timespec tv[2];
+	struct timespec64 tv[2];
 
 	if (t) {
 		if (get_user(tv[0].tv_sec, &t[0].tv_sec) ||

diff --git a/include/linux/audit.h b/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)

diff --git a/include/linux/compat.h b/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;

diff --git a/include/linux/msg.h b/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 */
diff --git a/include/linux/sem.h b/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 */

diff --git a/include/linux/shm.h b/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;

diff --git a/include/linux/time.h b/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

diff --git a/init/initramfs.c b/init/initramfs.c
@@ -110,7 +110,7 @@ static void __init free_hash(void)
 
 static long __init do_utime(char *filename, time_t mtime)
 {
-	struct timespec t[2];
+	struct timespec64 t[2];
 
 	t[0].tv_sec = mtime;
 	t[0].tv_nsec = 0;