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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 /socket
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 'socket')
-rw-r--r--socket/sys/socket.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/socket/sys/socket.h b/socket/sys/socket.h
index 949851a..5577e75 100644
--- a/socket/sys/socket.h
+++ b/socket/sys/socket.h
@@ -196,9 +196,20 @@ extern ssize_t recvmsg (int __fd, struct msghdr *__message, int __flags);
This function is a cancellation point and therefore not marked with
__THROW. */
+# ifndef __USE_TIME_BITS64
extern int recvmmsg (int __fd, struct mmsghdr *__vmessages,
unsigned int __vlen, int __flags,
struct timespec *__tmo);
+# else
+# ifdef __REDIRECT
+extern int __REDIRECT (recvmmsg, (int __fd, struct mmsghdr *__vmessages,
+ unsigned int __vlen, int __flags,
+ struct timespec *__tmo),
+ __recvmmsg64);
+# else
+# define recvmmsg __recvmmsg64
+# endif
+# endif
#endif