y2038: s390: Remove unneeded ipc uapi header files

The s390 msgbuf/sembuf/shmbuf header files are all identical to the
version from asm-generic.

This patch removes the files and replaces them with 'generic-y'
statements, to avoid having to modify each copy when we extend sysvipc
to deal with 64-bit time_t in 32-bit user space.

Note that unlike alpha and ia64, the ipcbuf.h header file is slightly
different here, so I'm leaving the private copy.

To deal with 32-bit compat tasks, we also have to adapt the definitions
of compat_{shm,sem,msg}id_ds to match the changes to the respective
asm-generic files.

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
index 501aaff853047d4f1da7cfa251fe7d9e97df798b..97db2fba546ad2c517a25fe9dbf25f8f351bf8ea 100644 (file)
--- a/arch/s390/include/asm/compat.h
+++ b/arch/s390/include/asm/compat.h
@@ -232,10 +232,10 @@ struct compat_ipc64_perm {
 
 struct compat_semid64_ds {
        struct compat_ipc64_perm sem_perm;
-       compat_time_t  sem_otime;
-       compat_ulong_t __pad1;
-       compat_time_t  sem_ctime;
-       compat_ulong_t __pad2;
+       compat_ulong_t sem_otime;
+       compat_ulong_t sem_otime_high;
+       compat_ulong_t sem_ctime;
+       compat_ulong_t sem_ctime_high;
        compat_ulong_t sem_nsems;
        compat_ulong_t __unused1;
        compat_ulong_t __unused2;
@@ -243,12 +243,12 @@ struct compat_semid64_ds {
 
 struct compat_msqid64_ds {
        struct compat_ipc64_perm msg_perm;
-       compat_time_t   msg_stime;
-       compat_ulong_t __pad1;
-       compat_time_t   msg_rtime;
-       compat_ulong_t __pad2;
-       compat_time_t   msg_ctime;
-       compat_ulong_t __pad3;
+       compat_ulong_t msg_stime;
+       compat_ulong_t msg_stime_high;
+       compat_ulong_t msg_rtime;
+       compat_ulong_t msg_rtime_high;
+       compat_ulong_t msg_ctime;
+       compat_ulong_t msg_ctime_high;
        compat_ulong_t msg_cbytes;
        compat_ulong_t msg_qnum;
        compat_ulong_t msg_qbytes;
@@ -261,12 +261,12 @@ struct compat_msqid64_ds {
 struct compat_shmid64_ds {
        struct compat_ipc64_perm shm_perm;
        compat_size_t  shm_segsz;
-       compat_time_t  shm_atime;
-       compat_ulong_t __pad1;
-       compat_time_t  shm_dtime;
-       compat_ulong_t __pad2;
-       compat_time_t  shm_ctime;
-       compat_ulong_t __pad3;
+       compat_ulong_t shm_atime;
+       compat_ulong_t shm_atime_high;
+       compat_ulong_t shm_dtime;
+       compat_ulong_t shm_dtime_high;
+       compat_ulong_t shm_ctime;
+       compat_ulong_t shm_ctime_high;
        compat_pid_t   shm_cpid;
        compat_pid_t   shm_lpid;
        compat_ulong_t shm_nattch;

diff --git a/arch/s390/include/uapi/asm/Kbuild b/arch/s390/include/uapi/asm/Kbuild
index faef3f7e83536ecf07368dd35f7deb803ab5d8a0..e364873e0d109686b4380c8dbca54705b59a283c 100644 (file)
--- a/arch/s390/include/uapi/asm/Kbuild
+++ b/arch/s390/include/uapi/asm/Kbuild
@@ -9,9 +9,12 @@ generic-y += errno.h
 generic-y += fcntl.h
 generic-y += ioctl.h
 generic-y += mman.h
+generic-y += msgbuf.h
 generic-y += param.h
 generic-y += poll.h
 generic-y += resource.h
+generic-y += sembuf.h
+generic-y += shmbuf.h
 generic-y += sockios.h
 generic-y += swab.h
 generic-y += termbits.h

diff --git a/arch/s390/include/uapi/asm/msgbuf.h b/arch/s390/include/uapi/asm/msgbuf.h
deleted file mode 100644 (file)
index 604f847..0000000
--- a/arch/s390/include/uapi/asm/msgbuf.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _S390_MSGBUF_H
-#define _S390_MSGBUF_H
-
-/* 
- * The msqid64_ds structure for S/390 architecture.
- * Note extra padding because this structure is passed back and forth
- * between kernel and user space.
- *
- * Pad space is left for:
- * - 64-bit time_t to solve y2038 problem
- * - 2 miscellaneous 32-bit values
- */
-
-struct msqid64_ds {
-       struct ipc64_perm msg_perm;
-       __kernel_time_t msg_stime;      /* last msgsnd time */
-#ifndef __s390x__
-       unsigned long   __unused1;
-#endif /* ! __s390x__ */
-       __kernel_time_t msg_rtime;      /* last msgrcv time */
-#ifndef __s390x__
-       unsigned long   __unused2;
-#endif /* ! __s390x__ */
-       __kernel_time_t msg_ctime;      /* last change time */
-#ifndef __s390x__
-       unsigned long   __unused3;
-#endif /* ! __s390x__ */
-       unsigned long  msg_cbytes;      /* current number of bytes on queue */
-       unsigned long  msg_qnum;        /* number of messages in queue */
-       unsigned long  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 long  __unused4;
-       unsigned long  __unused5;
-};
-
-#endif /* _S390_MSGBUF_H */

diff --git a/arch/s390/include/uapi/asm/sembuf.h b/arch/s390/include/uapi/asm/sembuf.h
deleted file mode 100644 (file)
index 3e91769..0000000
--- a/arch/s390/include/uapi/asm/sembuf.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _S390_SEMBUF_H
-#define _S390_SEMBUF_H
-
-/* 
- * The semid64_ds structure for S/390 architecture.
- * Note extra padding because this structure is passed back and forth
- * between kernel and user space.
- *
- * Pad space is left for:
- * - 64-bit time_t to solve y2038 problem (for !__s390x__)
- * - 2 miscellaneous 32-bit values
- */
-
-struct semid64_ds {
-       struct ipc64_perm sem_perm;             /* permissions .. see ipc.h */
-       __kernel_time_t sem_otime;              /* last semop time */
-#ifndef __s390x__
-       unsigned long   __unused1;
-#endif /* ! __s390x__ */
-       __kernel_time_t sem_ctime;              /* last change time */
-#ifndef __s390x__
-       unsigned long   __unused2;
-#endif /* ! __s390x__ */
-       unsigned long   sem_nsems;              /* no. of semaphores in array */
-       unsigned long   __unused3;
-       unsigned long   __unused4;
-};
-
-#endif /* _S390_SEMBUF_H */

diff --git a/arch/s390/include/uapi/asm/shmbuf.h b/arch/s390/include/uapi/asm/shmbuf.h
deleted file mode 100644 (file)
index 9cdce8d..0000000
--- a/arch/s390/include/uapi/asm/shmbuf.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _S390_SHMBUF_H
-#define _S390_SHMBUF_H
-
-/* 
- * The shmid64_ds structure for S/390 architecture.
- * Note extra padding because this structure is passed back and forth
- * between kernel and user space.
- *
- * Pad space is left for:
- * - 64-bit time_t to solve y2038 problem (for !__s390x__)
- * - 2 miscellaneous 32-bit values
- */
-
-struct shmid64_ds {
-       struct ipc64_perm       shm_perm;       /* operation perms */
-       size_t                  shm_segsz;      /* size of segment (bytes) */
-       __kernel_time_t         shm_atime;      /* last attach time */
-#ifndef __s390x__
-       unsigned long           __unused1;
-#endif /* ! __s390x__ */
-       __kernel_time_t         shm_dtime;      /* last detach time */
-#ifndef __s390x__
-       unsigned long           __unused2;
-#endif /* ! __s390x__ */
-       __kernel_time_t         shm_ctime;      /* last change time */
-#ifndef __s390x__
-       unsigned long           __unused3;
-#endif /* ! __s390x__ */
-       __kernel_pid_t          shm_cpid;       /* pid of creator */
-       __kernel_pid_t          shm_lpid;       /* pid of last operator */
-       unsigned long           shm_nattch;     /* no. of current attaches */
-       unsigned long           __unused4;
-       unsigned long           __unused5;
-};
-
-struct shminfo64 {
-       unsigned long   shmmax;
-       unsigned long   shmmin;
-       unsigned long   shmmni;
-       unsigned long   shmseg;
-       unsigned long   shmall;
-       unsigned long   __unused1;
-       unsigned long   __unused2;
-       unsigned long   __unused3;
-       unsigned long   __unused4;
-};
-
-#endif /* _S390_SHMBUF_H */