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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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14
socket/sys/socket.h
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@ -170,7 +170,7 @@ extern ssize_t recvfrom (int __fd, void *__restrict __buf, size_t __n,
This function is a cancellation point and therefore not marked with
__THROW. */
#ifndef __USE_TIME_BITS64
#ifndef __USE_TIME64_REDIRECTS
extern ssize_t sendmsg (int __fd, const struct msghdr *__message,
int __flags);
#else
@ -191,7 +191,7 @@ extern ssize_t __sendmsg64 (int __fd, const struct msghdr *__message,
This function is a cancellation point and therefore not marked with
__THROW. */
# ifndef __USE_TIME_BITS64
# ifndef __USE_TIME64_REDIRECTS
extern int sendmmsg (int __fd, struct mmsghdr *__vmessages,
unsigned int __vlen, int __flags);
# else
@ -204,7 +204,7 @@ extern int __sendmmsg64 (int __fd, struct mmsghdr *__vmessages,
unsigned int __vlen, int __flags);
# define sendmmsg __sendmmsg64
# endif
# endif /* __USE_TIME_BITS64 */
# endif /* __USE_TIME64_REDIRECTS */
#endif /* __USE_GNU */
/* Receive a message as described by MESSAGE from socket FD.
@ -212,7 +212,7 @@ extern int __sendmmsg64 (int __fd, struct mmsghdr *__vmessages,
This function is a cancellation point and therefore not marked with
__THROW. */
#ifndef __USE_TIME_BITS64
#ifndef __USE_TIME64_REDIRECTS
extern ssize_t recvmsg (int __fd, struct msghdr *__message, int __flags);
#else
# ifdef __REDIRECT
@ -231,7 +231,7 @@ extern ssize_t __recvmsg64 (int __fd, struct msghdr *__message, int __flags);
This function is a cancellation point and therefore not marked with
__THROW. */
# ifndef __USE_TIME_BITS64
# ifndef __USE_TIME64_REDIRECTS
extern int recvmmsg (int __fd, struct mmsghdr *__vmessages,
unsigned int __vlen, int __flags,
struct timespec *__tmo);
@ -251,7 +251,7 @@ extern int __REDIRECT (recvmmsg, (int __fd, struct mmsghdr *__vmessages,
/* Put the current value for socket FD's option OPTNAME at protocol level LEVEL
into OPTVAL (which is *OPTLEN bytes long), and set *OPTLEN to the value's
actual length. Returns 0 on success, -1 for errors. */
#ifndef __USE_TIME_BITS64
#ifndef __USE_TIME64_REDIRECTS
extern int getsockopt (int __fd, int __level, int __optname,
void *__restrict __optval,
socklen_t *__restrict __optlen) __THROW;
@ -273,7 +273,7 @@ extern int __getsockopt64 (int __fd, int __level, int __optname,
/* Set socket FD's option OPTNAME at protocol level LEVEL
to *OPTVAL (which is OPTLEN bytes long).
Returns 0 on success, -1 for errors. */
#ifndef __USE_TIME_BITS64
#ifndef __USE_TIME64_REDIRECTS
extern int setsockopt (int __fd, int __level, int __optname,
const void *__optval, socklen_t __optlen) __THROW;
#else