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y2038: ipc: remove __kernel_time_t reference from headers

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There are two structures based on time_t that conflict between libc and
kernel: timeval and timespec. Both are now renamed to __kernel_old_timeval
and __kernel_old_timespec.

For time_t, the old typedef is still __kernel_time_t. There is nothing
wrong with that name, but it would be nice to not use that going forward
as this type is used almost only in deprecated interfaces because of
the y2038 overflow.

In the IPC headers (msgbuf.h, sembuf.h, shmbuf.h), __kernel_time_t is only
used for the 64-bit variants, which are not deprecated.

Change these to a plain 'long', which is the same type as __kernel_time_t
on all 64-bit architectures anyway, to reduce the number of users of the
old type.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2019-11-04 21:17:26 +01:00
parent 176ed98c8a
commit caf5e32d4e
18 changed files with 55 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/mips/include/uapi/asm/msgbuf.h
View File

@ -15,9 +15,9 @@
#if defined(__mips64)
struct msqid64_ds {
struct ipc64_perm msg_perm;
__kernel_time_t msg_stime; /* last msgsnd time */
__kernel_time_t msg_rtime; /* last msgrcv time */
__kernel_time_t msg_ctime; /* last change time */
long msg_stime; /* last msgsnd time */
long msg_rtime; /* last msgrcv time */
long msg_ctime; /* last change time */
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 */

4
arch/mips/include/uapi/asm/sembuf.h
View File

@ -14,8 +14,8 @@
#ifdef __mips64
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
__kernel_time_t sem_otime; /* last semop time */
__kernel_time_t sem_ctime; /* last change time */
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
unsigned long sem_nsems; /* no. of semaphores in array */
unsigned long __unused1;
unsigned long __unused2;

6
arch/mips/include/uapi/asm/shmbuf.h
View File

@ -17,9 +17,9 @@
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 */
__kernel_time_t shm_dtime; /* last detach time */
__kernel_time_t shm_ctime; /* last change time */
long shm_atime; /* last attach time */
long shm_dtime; /* last detach time */
long shm_ctime; /* last change time */
__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 */

6
arch/parisc/include/uapi/asm/msgbuf.h
View File

@ -16,9 +16,9 @@
struct msqid64_ds {
struct ipc64_perm msg_perm;
#if __BITS_PER_LONG == 64
__kernel_time_t msg_stime; /* last msgsnd time */
__kernel_time_t msg_rtime; /* last msgrcv time */
__kernel_time_t msg_ctime; /* last change time */
long msg_stime; /* last msgsnd time */
long msg_rtime; /* last msgrcv time */
long msg_ctime; /* last change time */
#else
unsigned long msg_stime_high;
unsigned long msg_stime; /* last msgsnd time */

4
arch/parisc/include/uapi/asm/sembuf.h
View File

@ -16,8 +16,8 @@
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#if __BITS_PER_LONG == 64
__kernel_time_t sem_otime; /* last semop time */
__kernel_time_t sem_ctime; /* last change time */
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
#else
unsigned long sem_otime_high;
unsigned long sem_otime; /* last semop time */

6
arch/parisc/include/uapi/asm/shmbuf.h
View File

@ -16,9 +16,9 @@
struct shmid64_ds {
struct ipc64_perm shm_perm; /* operation perms */
#if __BITS_PER_LONG == 64
__kernel_time_t shm_atime; /* last attach time */
__kernel_time_t shm_dtime; /* last detach time */
__kernel_time_t shm_ctime; /* last change time */
long shm_atime; /* last attach time */
long shm_dtime; /* last detach time */
long shm_ctime; /* last change time */
#else
unsigned long shm_atime_high;
unsigned long shm_atime; /* last attach time */

6
arch/powerpc/include/uapi/asm/msgbuf.h
View File

@ -11,9 +11,9 @@
struct msqid64_ds {
struct ipc64_perm msg_perm;
#ifdef __powerpc64__
__kernel_time_t msg_stime; /* last msgsnd time */
__kernel_time_t msg_rtime; /* last msgrcv time */
__kernel_time_t msg_ctime; /* last change time */
long msg_stime; /* last msgsnd time */
long msg_rtime; /* last msgrcv time */
long msg_ctime; /* last change time */
#else
unsigned long msg_stime_high;
unsigned long msg_stime; /* last msgsnd time */

4
arch/powerpc/include/uapi/asm/sembuf.h
View File

@ -26,8 +26,8 @@ struct semid64_ds {
unsigned long sem_ctime_high;
unsigned long sem_ctime; /* last change time */
#else
__kernel_time_t sem_otime; /* last semop time */
__kernel_time_t sem_ctime; /* last change time */
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
#endif
unsigned long sem_nsems; /* no. of semaphores in array */
unsigned long __unused3;

6
arch/powerpc/include/uapi/asm/shmbuf.h
View File

@ -22,9 +22,9 @@
struct shmid64_ds {
struct ipc64_perm shm_perm; /* operation perms */
#ifdef __powerpc64__
__kernel_time_t shm_atime; /* last attach time */
__kernel_time_t shm_dtime; /* last detach time */
__kernel_time_t shm_ctime; /* last change time */
long shm_atime; /* last attach time */
long shm_dtime; /* last detach time */
long shm_ctime; /* last change time */
#else
unsigned long shm_atime_high;
unsigned long shm_atime; /* last attach time */

6
arch/sparc/include/uapi/asm/msgbuf.h
View File

@ -13,9 +13,9 @@
struct msqid64_ds {
struct ipc64_perm msg_perm;
#if defined(__sparc__) && defined(__arch64__)
__kernel_time_t msg_stime; /* last msgsnd time */
__kernel_time_t msg_rtime; /* last msgrcv time */
__kernel_time_t msg_ctime; /* last change time */
long msg_stime; /* last msgsnd time */
long msg_rtime; /* last msgrcv time */
long msg_ctime; /* last change time */
#else
unsigned long msg_stime_high;
unsigned long msg_stime; /* last msgsnd time */

4
arch/sparc/include/uapi/asm/sembuf.h
View File

@ -14,8 +14,8 @@
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#if defined(__sparc__) && defined(__arch64__)
__kernel_time_t sem_otime; /* last semop time */
__kernel_time_t sem_ctime; /* last change time */
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
#else
unsigned long sem_otime_high;
unsigned long sem_otime; /* last semop time */

6
arch/sparc/include/uapi/asm/shmbuf.h
View File

@ -14,9 +14,9 @@
struct shmid64_ds {
struct ipc64_perm shm_perm; /* operation perms */
#if defined(__sparc__) && defined(__arch64__)
__kernel_time_t shm_atime; /* last attach time */
__kernel_time_t shm_dtime; /* last detach time */
__kernel_time_t shm_ctime; /* last change time */
long shm_atime; /* last attach time */
long shm_dtime; /* last detach time */
long shm_ctime; /* last change time */
#else
unsigned long shm_atime_high;
unsigned long shm_atime; /* last attach time */

6
arch/x86/include/uapi/asm/msgbuf.h
View File

@ -15,9 +15,9 @@
struct msqid64_ds {
struct ipc64_perm msg_perm;
__kernel_time_t msg_stime; /* last msgsnd time */
__kernel_time_t msg_rtime; /* last msgrcv time */
__kernel_time_t msg_ctime; /* last change time */
__kernel_long_t msg_stime; /* last msgsnd time */
__kernel_long_t msg_rtime; /* last msgrcv time */
__kernel_long_t msg_ctime; /* last change time */
__kernel_ulong_t msg_cbytes; /* current number of bytes on queue */
__kernel_ulong_t msg_qnum; /* number of messages in queue */
__kernel_ulong_t msg_qbytes; /* max number of bytes on queue */

4
arch/x86/include/uapi/asm/sembuf.h
View File

@ -21,9 +21,9 @@ struct semid64_ds {
unsigned long sem_ctime; /* last change time */
unsigned long sem_ctime_high;
#else
__kernel_time_t sem_otime; /* last semop time */
long sem_otime; /* last semop time */
__kernel_ulong_t __unused1;
__kernel_time_t sem_ctime; /* last change time */
long sem_ctime; /* last change time */
__kernel_ulong_t __unused2;
#endif
__kernel_ulong_t sem_nsems; /* no. of semaphores in array */

6
arch/x86/include/uapi/asm/shmbuf.h
View File

@ -16,9 +16,9 @@
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 */
__kernel_time_t shm_dtime; /* last detach time */
__kernel_time_t shm_ctime; /* last change time */
__kernel_long_t shm_atime; /* last attach time */
__kernel_long_t shm_dtime; /* last detach time */
__kernel_long_t shm_ctime; /* last change time */
__kernel_pid_t shm_cpid; /* pid of creator */
__kernel_pid_t shm_lpid; /* pid of last operator */
__kernel_ulong_t shm_nattch; /* no. of current attaches */

12
include/uapi/asm-generic/msgbuf.h
View File

@ -13,9 +13,9 @@
* everyone just ended up making identical copies without specific
* optimizations, so we may just as well all use the same one.
*
* 64 bit architectures typically define a 64 bit __kernel_time_t,
* so they do not need the first three padding words.
* On big-endian systems, the padding is in the wrong place.
* 64 bit architectures use a 64-bit long time field here, while
* 32 bit architectures have a pair of unsigned long values.
* On big-endian systems, the lower half is in the wrong place.
*
* Pad space is left for:
* - 2 miscellaneous 32-bit values
@ -24,9 +24,9 @@
struct msqid64_ds {
struct ipc64_perm msg_perm;
#if __BITS_PER_LONG == 64
__kernel_time_t msg_stime; /* last msgsnd time */
__kernel_time_t msg_rtime; /* last msgrcv time */
__kernel_time_t msg_ctime; /* last change time */
long msg_stime; /* last msgsnd time */
long msg_rtime; /* last msgrcv time */
long msg_ctime; /* last change time */
#else
unsigned long msg_stime; /* last msgsnd time */
unsigned long msg_stime_high;

7
include/uapi/asm-generic/sembuf.h
View File

@ -13,9 +13,8 @@
* everyone just ended up making identical copies without specific
* optimizations, so we may just as well all use the same one.
*
* 64 bit architectures use a 64-bit __kernel_time_t here, while
* 64 bit architectures use a 64-bit long time field here, while
* 32 bit architectures have a pair of unsigned long values.
* so they do not need the first two padding words.
*
* On big-endian systems, the padding is in the wrong place for
* historic reasons, so user space has to reconstruct a time_t
@ -29,8 +28,8 @@
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#if __BITS_PER_LONG == 64
__kernel_time_t sem_otime; /* last semop time */
__kernel_time_t sem_ctime; /* last change time */
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
#else
unsigned long sem_otime; /* last semop time */
unsigned long sem_otime_high;

12
include/uapi/asm-generic/shmbuf.h
View File

@ -13,9 +13,9 @@
* everyone just ended up making identical copies without specific
* optimizations, so we may just as well all use the same one.
*
* 64 bit architectures typically define a 64 bit __kernel_time_t,
* so they do not need the first two padding words.
* On big-endian systems, the padding is in the wrong place.
* 64 bit architectures use a 64-bit long time field here, while
* 32 bit architectures have a pair of unsigned long values.
* On big-endian systems, the lower half is in the wrong place.
*
*
* Pad space is left for:
@ -26,9 +26,9 @@ struct shmid64_ds {
struct ipc64_perm shm_perm; /* operation perms */
size_t shm_segsz; /* size of segment (bytes) */
#if __BITS_PER_LONG == 64
__kernel_time_t shm_atime; /* last attach time */
__kernel_time_t shm_dtime; /* last detach time */
__kernel_time_t shm_ctime; /* last change time */
long shm_atime; /* last attach time */
long shm_dtime; /* last detach time */
long shm_ctime; /* last change time */
#else
unsigned long shm_atime; /* last attach time */
unsigned long shm_atime_high;