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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-02-17 13:35:19 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-06-15 10:42:11 -0300
commit47f24c21ee38701ae275aa9e451f70fa3e77478c (patch)
treeb4cc52206173fb2ed427a1e797769d12369a89ad /sysvipc
parent8af344feb5ae3e6e3374a6cf2175b44cc904a94e (diff)
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y2038: Add support for 64-bit time on legacy ABIs
A new build flag, _TIME_BITS, enables the usage of the newer 64-bit time symbols for legacy ABI (where 32-bit time_t is default). The 64 bit time support is only enabled if LFS (_FILE_OFFSET_BITS=64) is also used. Different than LFS support, the y2038 symbols are added only for the required ABIs (armhf, csky, hppa, i386, m68k, microblaze, mips32, mips64-n32, nios2, powerpc32, sparc32, s390-32, and sh). The ABIs with 64-bit time support are unchanged, both for symbol and types redirection. On Linux the full 64-bit time support requires a minimum of kernel version v5.1. Otherwise, the 32-bit fallbacks are used and might results in error with overflow return code (EOVERFLOW). The i686-gnu does not yet support 64-bit time. This patch exports following rediretions to support 64-bit time: * libc: adjtime adjtimex clock_adjtime clock_getres clock_gettime clock_nanosleep clock_settime cnd_timedwait ctime ctime_r difftime fstat fstatat futimens futimes futimesat getitimer getrusage gettimeofday gmtime gmtime_r localtime localtime_r lstat_time lutimes mktime msgctl mtx_timedlock nanosleep nanosleep ntp_gettime ntp_gettimex ppoll pselec pselect pthread_clockjoin_np pthread_cond_clockwait pthread_cond_timedwait pthread_mutex_clocklock pthread_mutex_timedlock pthread_rwlock_clockrdlock pthread_rwlock_clockwrlock pthread_rwlock_timedrdlock pthread_rwlock_timedwrlock pthread_timedjoin_np recvmmsg sched_rr_get_interval select sem_clockwait semctl semtimedop sem_timedwait setitimer settimeofday shmctl sigtimedwait stat thrd_sleep time timegm timerfd_gettime timerfd_settime timespec_get utime utimensat utimes utimes wait3 wait4 * librt: aio_suspend mq_timedreceive mq_timedsend timer_gettime timer_settime * libanl: gai_suspend Reviewed-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'sysvipc')
-rw-r--r--sysvipc/sys/msg.h10
-rw-r--r--sysvipc/sys/sem.h21
-rw-r--r--sysvipc/sys/shm.h10
3 files changed, 41 insertions, 0 deletions
diff --git a/sysvipc/sys/msg.h b/sysvipc/sys/msg.h
index 9ddedf5..f31a437 100644
--- a/sysvipc/sys/msg.h
+++ b/sysvipc/sys/msg.h
@@ -58,7 +58,17 @@ struct msgbuf
__BEGIN_DECLS
/* Message queue control operation. */
+#ifndef __USE_TIME_BITS64
extern int msgctl (int __msqid, int __cmd, struct msqid_ds *__buf) __THROW;
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (msgctl,
+ (int __msqid, int __cmd, struct msqid_ds *__buf),
+ __msgctl64);
+# else
+# define msgctl __msgctl64
+# endif
+#endif
/* Get messages queue. */
extern int msgget (key_t __key, int __msgflg) __THROW;
diff --git a/sysvipc/sys/sem.h b/sysvipc/sys/sem.h
index 03b65df..4eb4c51 100644
--- a/sysvipc/sys/sem.h
+++ b/sysvipc/sys/sem.h
@@ -48,7 +48,17 @@ struct sembuf
__BEGIN_DECLS
/* Semaphore control operation. */
+#ifndef __USE_TIME_BITS64
extern int semctl (int __semid, int __semnum, int __cmd, ...) __THROW;
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (semctl,
+ (int __semid, int __semnum, int __cmd, ...),
+ __semctl64);
+# else
+# define semctl __semctl64
+# endif
+#endif
/* Get semaphore. */
extern int semget (key_t __key, int __nsems, int __semflg) __THROW;
@@ -58,8 +68,19 @@ extern int semop (int __semid, struct sembuf *__sops, size_t __nsops) __THROW;
#ifdef __USE_GNU
/* Operate on semaphore with timeout. */
+# ifndef __USE_TIME_BITS64
extern int semtimedop (int __semid, struct sembuf *__sops, size_t __nsops,
const struct timespec *__timeout) __THROW;
+# else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (semtimedop, (int __semid, struct sembuf *__sops,
+ size_t __nsops,
+ const struct timespec *__timeout),
+ __semtimedop64);
+# else
+# define semtimedop __semtimedop64
+# endif
+# endif
#endif
__END_DECLS
diff --git a/sysvipc/sys/shm.h b/sysvipc/sys/shm.h
index 7506ba6..b09e049 100644
--- a/sysvipc/sys/shm.h
+++ b/sysvipc/sys/shm.h
@@ -46,7 +46,17 @@ __BEGIN_DECLS
facility. The definition is found in XPG4.2. */
/* Shared memory control operation. */
+#ifndef __USE_TIME_BITS64
extern int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf) __THROW;
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (shmctl,
+ (int __shmid, int __cmd, struct shmid_ds *__buf),
+ __shmctl64);
+# else
+# define shmctl __shmctl64
+# endif
+#endif
/* Get shared memory segment. */
extern int shmget (key_t __key, size_t __size, int __shmflg) __THROW;