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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2024-01-18 10:18:01 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2024-04-02 15:28:36 -0300
commita4ed0471d71739928a0d0fa3258b3ff3b158e9b9 (patch)
treedb8118e3d4c787cdae80d343bb40bb7fc7ed2926 /sysdeps/unix/sysv/linux/sys
parenta0698a5e92ceeed3409d28623b1d599da6bc887d (diff)
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Always define __USE_TIME_BITS64 when 64 bit time_t is used
It was raised on libc-help [1] that some Linux kernel interfaces expect
the libc to define __USE_TIME_BITS64 to indicate the time_t size for the
kABI.  Different than defined by the initial y2038 design document [2],
the __USE_TIME_BITS64 is only defined for ABIs that support more than
one time_t size (by defining the _TIME_BITS for each module).

The 64 bit time_t redirects are now enabled using a different internal
define (__USE_TIME64_REDIRECTS). There is no expected change in semantic
or code generation.

Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and
arm-linux-gnueabi

[1] https://sourceware.org/pipermail/libc-help/2024-January/006557.html
[2] https://sourceware.org/glibc/wiki/Y2038ProofnessDesign

Reviewed-by: DJ Delorie <dj@redhat.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/sys')
-rw-r--r--sysdeps/unix/sysv/linux/sys/epoll.h2
-rw-r--r--sysdeps/unix/sysv/linux/sys/prctl.h2
-rw-r--r--sysdeps/unix/sysv/linux/sys/timerfd.h4
-rw-r--r--sysdeps/unix/sysv/linux/sys/timex.h2
4 files changed, 5 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/sys/epoll.h b/sysdeps/unix/sysv/linux/sys/epoll.h
index 9b51e3bd14..fc8dce45c8 100644
--- a/sysdeps/unix/sysv/linux/sys/epoll.h
+++ b/sysdeps/unix/sysv/linux/sys/epoll.h
@@ -140,7 +140,7 @@ extern int epoll_pwait (int __epfd, struct epoll_event *__events,
 
    This function is a cancellation point and therefore not marked with
    __THROW.  */
-#ifndef __USE_TIME_BITS64
+#ifndef __USE_TIME64_REDIRECTS
 extern int epoll_pwait2 (int __epfd, struct epoll_event *__events,
 			 int __maxevents, const struct timespec *__timeout,
 			 const __sigset_t *__ss)
diff --git a/sysdeps/unix/sysv/linux/sys/prctl.h b/sysdeps/unix/sysv/linux/sys/prctl.h
index b13b846261..79a9b31273 100644
--- a/sysdeps/unix/sysv/linux/sys/prctl.h
+++ b/sysdeps/unix/sysv/linux/sys/prctl.h
@@ -38,7 +38,7 @@
 __BEGIN_DECLS
 
 /* Control process execution.  */
-#ifndef __USE_TIME_BITS64
+#ifndef __USE_TIME64_REDIRECTS
 extern int prctl (int __option, ...) __THROW;
 #else
 # ifdef __REDIRECT
diff --git a/sysdeps/unix/sysv/linux/sys/timerfd.h b/sysdeps/unix/sysv/linux/sys/timerfd.h
index 19d0cbfae0..f66ece306a 100644
--- a/sysdeps/unix/sysv/linux/sys/timerfd.h
+++ b/sysdeps/unix/sysv/linux/sys/timerfd.h
@@ -47,7 +47,7 @@ extern int timerfd_settime (int __ufd, int __flags,
 			    const struct itimerspec *__utmr,
 			    struct itimerspec *__otmr) __THROW;
 
-#ifdef __USE_TIME_BITS64
+#ifdef __USE_TIME64_REDIRECTS
 # if defined(__REDIRECT_NTH)
 extern int __REDIRECT_NTH (timerfd_settime,
                            (int __ufd, int __flags,
@@ -62,7 +62,7 @@ extern int __REDIRECT_NTH (timerfd_settime,
 /* Return the next expiration time of UFD.  */
 extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW;
 
-#ifdef __USE_TIME_BITS64
+#ifdef __USE_TIME64_REDIRECTS
 # if defined(__REDIRECT_NTH)
 extern int __REDIRECT_NTH (timerfd_gettime, (int __ufd,
                                              struct itimerspec *__otmr),
diff --git a/sysdeps/unix/sysv/linux/sys/timex.h b/sysdeps/unix/sysv/linux/sys/timex.h
index 28ce022253..568748d767 100644
--- a/sysdeps/unix/sysv/linux/sys/timex.h
+++ b/sysdeps/unix/sysv/linux/sys/timex.h
@@ -54,7 +54,7 @@ struct ntptimeval
 
 __BEGIN_DECLS
 
-#ifndef __USE_TIME_BITS64
+#ifndef __USE_TIME64_REDIRECTS
 extern int adjtimex (struct timex *__ntx) __THROW __nonnull ((1));
 extern int ntp_gettimex (struct ntptimeval *__ntv) __THROW __nonnull ((1));