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Always define __USE_TIME_BITS64 when 64 bit time_t is used

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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>
This commit is contained in:
Adhemerval Zanella
2024-01-18 10:18:01 -03:00
parent a0698a5e92
commit a4ed0471d7
75 changed files with 178 additions and 182 deletions
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4
sysdeps/unix/sysv/linux/sys/timerfd.h
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@@ -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),