diff mbox

[5/9] y2038: parisc: extend sysvipc data structures

Message ID 1432134445-804487-6-git-send-email-arnd@arndb.de
State Not Applicable
Headers show

Commit Message

Arnd Bergmann May 20, 2015, 3:07 p.m. UTC
parisc, uses a nonstandard variation of the generic sysvipc
data structures, intended to have the padding moved around
so it can deal with big-endian 32-bit user space that has
64-bit time_t.

Unlike most architectures, parisc actually succeeded in
defining this right for big-endian CPUs, but as everyone else
got it wrong, we just use the same hack everywhere.

This takes just take the same approach here that we have for
the asm-generic headers and adds separate 32-bit fields for the
upper halves of the timestamps, to let libc deal with the mess
in user space.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/parisc/include/asm/compat.h      | 32 ++++++++++++++++----------------
 arch/parisc/include/uapi/asm/msgbuf.h | 32 ++++++++++++++++----------------
 arch/parisc/include/uapi/asm/sembuf.h | 13 +++++++------
 arch/parisc/include/uapi/asm/shmbuf.h | 18 ++++++++----------
 4 files changed, 47 insertions(+), 48 deletions(-)
diff mbox

Patch

diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h
index cc20c7b203f4..3113a7f8e1be 100644
--- a/arch/parisc/include/asm/compat.h
+++ b/arch/parisc/include/asm/compat.h
@@ -195,10 +195,10 @@  struct compat_ipc64_perm {
 
 struct compat_semid64_ds {
 	struct compat_ipc64_perm sem_perm;
-	compat_time_t sem_otime;
-	unsigned int __unused1;
-	compat_time_t sem_ctime;
-	unsigned int __unused2;
+	unsigned int sem_otime;
+	unsigned int sem_otime_high;
+	unsigned int sem_ctime;
+	unsigned int sem_ctime_high;
 	compat_ulong_t sem_nsems;
 	compat_ulong_t __unused3;
 	compat_ulong_t __unused4;
@@ -206,12 +206,12 @@  struct compat_semid64_ds {
 
 struct compat_msqid64_ds {
 	struct compat_ipc64_perm msg_perm;
-	unsigned int __unused1;
-	compat_time_t msg_stime;
-	unsigned int __unused2;
-	compat_time_t msg_rtime;
-	unsigned int __unused3;
-	compat_time_t msg_ctime;
+	unsigned int msg_stime_high;
+	unsigned int msg_stime;
+	unsigned int msg_rtime_high;
+	unsigned int msg_rtime;
+	unsigned int msg_ctime_high;
+	unsigned int msg_ctime;
 	compat_ulong_t msg_cbytes;
 	compat_ulong_t msg_qnum;
 	compat_ulong_t msg_qbytes;
@@ -223,12 +223,12 @@  struct compat_msqid64_ds {
 
 struct compat_shmid64_ds {
 	struct compat_ipc64_perm shm_perm;
-	unsigned int __unused1;
-	compat_time_t shm_atime;
-	unsigned int __unused2;
-	compat_time_t shm_dtime;
-	unsigned int __unused3;
-	compat_time_t shm_ctime;
+	unsigned int shm_atime_high;
+	unsigned int shm_atime;
+	unsigned int shm_dtime_high;
+	unsigned int shm_dtime;
+	unsigned int shm_ctime_high;
+	unsigned int shm_ctime;
 	unsigned int __unused4;
 	compat_size_t shm_segsz;
 	compat_pid_t shm_cpid;
diff --git a/arch/parisc/include/uapi/asm/msgbuf.h b/arch/parisc/include/uapi/asm/msgbuf.h
index 342138983914..8f60abe9f2de 100644
--- a/arch/parisc/include/uapi/asm/msgbuf.h
+++ b/arch/parisc/include/uapi/asm/msgbuf.h
@@ -15,25 +15,25 @@ 
 
 struct msqid64_ds {
 	struct ipc64_perm msg_perm;
-#if __BITS_PER_LONG != 64
-	unsigned int   __pad1;
-#endif
+#if __BITS_PER_LONG == 64
 	__kernel_time_t msg_stime;	/* last msgsnd time */
-#if __BITS_PER_LONG != 64
-	unsigned int   __pad2;
-#endif
 	__kernel_time_t msg_rtime;	/* last msgrcv time */
-#if __BITS_PER_LONG != 64
-	unsigned int   __pad3;
-#endif
 	__kernel_time_t msg_ctime;	/* last change time */
-	unsigned int  msg_cbytes;	/* current number of bytes on queue */
-	unsigned int  msg_qnum;	/* number of messages in queue */
-	unsigned int  msg_qbytes;	/* max number of bytes on queue */
-	__kernel_pid_t msg_lspid;	/* pid of last msgsnd */
-	__kernel_pid_t msg_lrpid;	/* last receive pid */
-	unsigned int  __unused1;
-	unsigned int  __unused2;
+#else
+	unsigned long	msg_stime_high;
+	unsigned long	msg_stime;	/* last msgsnd time */
+	unsigned long	msg_rtime_high;
+	unsigned long	msg_rtime;	/* last msgrcv time */
+	unsigned long	msg_ctime_high;
+	unsigned long	msg_ctime;	/* last change time */
+#endif
+	unsigned int	msg_cbytes;	/* current number of bytes on queue */
+	unsigned int	msg_qnum;	/* number of messages in queue */
+	unsigned int	msg_qbytes;	/* max number of bytes on queue */
+	__kernel_pid_t	msg_lspid;	/* pid of last msgsnd */
+	__kernel_pid_t	msg_lrpid;	/* last receive pid */
+	unsigned int	__unused1;
+	unsigned int	__unused2;
 };
 
 #endif /* _PARISC_MSGBUF_H */
diff --git a/arch/parisc/include/uapi/asm/sembuf.h b/arch/parisc/include/uapi/asm/sembuf.h
index f01d89e30d73..2a02cd19b74a 100644
--- a/arch/parisc/include/uapi/asm/sembuf.h
+++ b/arch/parisc/include/uapi/asm/sembuf.h
@@ -15,14 +15,15 @@ 
 
 struct semid64_ds {
 	struct ipc64_perm sem_perm;		/* permissions .. see ipc.h */
-#if __BITS_PER_LONG != 64
-	unsigned int	__pad1;
-#endif
+#if __BITS_PER_LONG == 64
 	__kernel_time_t	sem_otime;		/* last semop time */
-#if __BITS_PER_LONG != 64
-	unsigned int	__pad2;
-#endif
 	__kernel_time_t	sem_ctime;		/* last change time */
+#else
+	unsigned long	sem_otime_high;
+	unsigned long	sem_otime;		/* last semop time */
+	unsigned long	sem_ctime_high;
+	unsigned long	sem_ctime;		/* last change time */
+#endif
 	unsigned int	sem_nsems;		/* no. of semaphores in array */
 	unsigned int	__unused1;
 	unsigned int	__unused2;
diff --git a/arch/parisc/include/uapi/asm/shmbuf.h b/arch/parisc/include/uapi/asm/shmbuf.h
index 8496c38560c6..edc2553b00e8 100644
--- a/arch/parisc/include/uapi/asm/shmbuf.h
+++ b/arch/parisc/include/uapi/asm/shmbuf.h
@@ -15,19 +15,17 @@ 
 
 struct shmid64_ds {
 	struct ipc64_perm	shm_perm;	/* operation perms */
-#if __BITS_PER_LONG != 64
-	unsigned int		__pad1;
-#endif
+#if __BITS_PER_LONG == 64
 	__kernel_time_t		shm_atime;	/* last attach time */
-#if __BITS_PER_LONG != 64
-	unsigned int		__pad2;
-#endif
 	__kernel_time_t		shm_dtime;	/* last detach time */
-#if __BITS_PER_LONG != 64
-	unsigned int		__pad3;
-#endif
 	__kernel_time_t		shm_ctime;	/* last change time */
-#if __BITS_PER_LONG != 64
+#else
+	unsigned long		shm_atime_high;
+	unsigned long		shm_atime;	/* last attach time */
+	unsigned long		shm_dtime_high;
+	unsigned long		shm_dtime;	/* last detach time */
+	unsigned long		shm_ctime_high;
+	unsigned long		shm_ctime;	/* last change time */
 	unsigned int		__pad4;
 #endif
 	size_t			shm_segsz;	/* size of segment (bytes) */