This patch provides new __mq_timedreceive_time64 explicit 64 bit function for
receiving messages with absolute timeout.
Moreover, a 32 bit version - __mq_timedreceive has been refactored to
internally use __mq_timedreceive_time64.
The __mq_timedreceive is now supposed to be used on systems still supporting 32
bit time (__TIMESIZE != 64) - hence the necessary conversion to 64 bit struct
__timespec64 from struct timespec.
The new mq_timedsend_time64 syscall available from Linux 5.1+ has been used,
when applicable.
As this wrapper function is also used internally in the glibc, to e.g. provide
mq_receive implementation, an explicit check for abs_timeout being NULL has been
added due to conversions between struct timespec and struct __timespec64.
Before this change the Linux kernel handled this NULL pointer.
Build tests:
- ./src/scripts/build-many-glibcs.py glibcs
Run-time tests:
- Run specific tests on ARM/x86 32bit systems (qemu):
https://github.com/lmajewski/meta-y2038 and run tests:
https://github.com/lmajewski/y2038-tests/commits/master
Linux kernel, headers and minimal kernel version for glibc build test matrix:
- Linux v5.1 (with mq_timedreceive_time64) and glibc built with v5.1 as
minimal kernel version (--enable-kernel="5.1.0")
The __ASSUME_TIME64_SYSCALLS flag defined.
- Linux v5.1 and default minimal kernel version
The __ASSUME_TIME64_SYSCALLS not defined, but kernel supports
mq_timedreceive_time64 syscall.
- Linux v4.19 (no mq_timedreceive_time64 support) with default minimal kernel
version for contemporary glibc (3.2.0)
This kernel doesn't support mq_timedreceive_time64 syscall, so the fallback to
mq_timedreceive is tested.
Above tests were performed with Y2038 redirection applied as well as without
(so the __TIMESIZE != 64 execution path is checked as well).
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This patch provides new __mq_timedsend_time64 explicit 64 bit function for
sending messages with absolute timeout.
Moreover, a 32 bit version - __mq_timedsend has been refactored to internally
use __mq_timedsend_time64.
The __mq_timedsend is now supposed to be used on systems still supporting 32
bit time (__TIMESIZE != 64) - hence the necessary conversion to 64 bit struct
__timespec64 from struct timespec.
The new __mq_timedsend_time64 syscall available from Linux 5.1+ has been used,
when applicable.
As this wrapper function is also used internally in the glibc, to e.g. provide
mq_send implementation, an explicit check for abs_timeout being NULL has been
added due to conversions between struct timespec and struct __timespec64.
Before this change the Linux kernel handled this NULL pointer.
Build tests:
- ./src/scripts/build-many-glibcs.py glibcs
Run-time tests:
- Run specific tests on ARM/x86 32bit systems (qemu):
https://github.com/lmajewski/meta-y2038 and run tests:
https://github.com/lmajewski/y2038-tests/commits/master
Linux kernel, headers and minimal kernel version for glibc build test matrix:
- Linux v5.1 (with mq_timedsend_time64) and glibc built with v5.1 as a
minimal kernel version (--enable-kernel="5.1.0")
The __ASSUME_TIME64_SYSCALLS flag defined.
- Linux v5.1 and default minimal kernel version
The __ASSUME_TIME64_SYSCALLS not defined, but kernel supports
mq_timedsend_time64 syscall.
- Linux v4.19 (no mq_timedsend_time64 support) with default minimal kernel
version for contemporary glibc (3.2.0)
This kernel doesn't support mq_timedsend_time64 syscall, so the fallback to
mq_timedsend is tested.
Above tests were performed with Y2038 redirection applied as well as without
(so the __TIMESIZE != 64 execution path is checked as well).
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
mq_receive calls mq_timedreceive, and mq_send calls mq_timedsend. But
mq_receive and mq_send were in POSIX by 1996, while mq_timed* were
added in the 2001 edition of POSIX. This patch fixes this by making
mq_timed* into weak aliases for __mq_timed* and calling the
__mq_timed* names.
Tested for x86_64 and x86 (testsuite, and that disassembly of
installed shared libraries is unchanged by the patch).
[BZ #18545]
* rt/mq_timedreceive.c (mq_timedreceive): Rename to
__mq_timedreceive and define as alias of __mq_timedreceive. Use
hidden_weak.
* rt/mq_timedsend.c (mq_timedsend): Rename to __mq_timedsend and
define as alias of __mq_timedsend. Use hidden_weak.
* sysdeps/unix/sysv/linux/syscalls.list (mq_timedsend): Use
__mq_timedsend as strong name.
(mq_timedreceive): Use __mq_timedreceive as strong name.
* include/mqueue.h (__mq_timedsend): Declare. Use hidden_proto.
(__mq_timedreceive): Likewise.
* sysdeps/unix/sysv/linux/mq_receive.c (mq_receive): Call
__mq_timedreceive instead of mq_timedreceive.
* sysdeps/unix/sysv/linux/mq_send.c (mq_send): Call __mq_timedsend
instead of mq_timedsend.
* conform/Makefile (test-xfail-UNIX98/mqueue.h/linknamespace):
Remove variable.
This change is only useful for the conformance tests since the headers
changed are not installed. The conformance tests fail due to IS_IN
not being defined, so wrap it with a check to make sure that _ISOMAC
is defined.
* include/bits/stdlib-float.h: Use IS_IN only if _ISOMAC is
defined.
* include/mqueue.h: Likewise.
* include/stdlib.h: Likewise.
2004-04-08 Ulrich Drepper <drepper@redhat.com>
* rt/tst-mqueue3.c: New file.
* rt/Makefile (tests): Add tst-mqueue3.
2004-04-08 Jakub Jelinek <jakub@redhat.com>
* rt/tst-mqueue1.c: New file.
* rt/tst-mqueue2.c: New file.
* rt/tst-mqueue4.c: New file.
* rt/Makefile (tests): Add tst-mqueue1, tst-mqueue2, tst-mqueue4.
* rt/Versions (librt): Add mq_*@@GLIBC_2.3.4.
* rt/Makefile (headers): Add mqueue.h and bits/mqueue.h.
(mq-routines): Set.
(librt-routines): Use it.
* rt/mqueue.h: New file.
* include/mqueue.h: New file.
* sysdeps/generic/bits/mqueue.h: New file.
* sysdeps/generic/mq_setattr.c: New file.
* sysdeps/generic/mq_getattr.c: New file.
* sysdeps/generic/mq_notify.c: New file.
* sysdeps/generic/mq_close.c: New file.
* sysdeps/generic/mq_send.c: New file.
* sysdeps/generic/mq_unlink.c: New file.
* sysdeps/generic/mq_receive.c: New file.
* sysdeps/generic/mq_timedreceive.c: New file.
* sysdeps/generic/mq_timedsend.c: New file.
* sysdeps/generic/mq_open.c: New file.
* sysdeps/unix/sysv/linux/bits/local_lim.h (MQ_PRIO_MAX): Define.
* sysdeps/unix/sysv/linux/bits/mqueue.h: New file.
* sysdeps/unix/sysv/linux/syscalls.list: Add mq_timedsend,
mq_timedreceive and mq_setattr.
* sysdeps/unix/sysv/linux/mq_getattr.c: New file.
* sysdeps/unix/sysv/linux/mq_notify.c: New file.
* sysdeps/unix/sysv/linux/mq_close.c: New file.
* sysdeps/unix/sysv/linux/mq_send.c: New file.
* sysdeps/unix/sysv/linux/mq_unlink.c: New file.
* sysdeps/unix/sysv/linux/mq_receive.c: New file.
* sysdeps/unix/sysv/linux/mq_open.c: New file.
2004-04-09 Thorsten Kukuk <kukuk@suse.de>
* sysdeps/s390/ffs.c: Don't add ffsl weak alias on s390x.
2004-04-09 Steven Munroe <sjmunroe@us.ibm.com>
* sysdeps/unix/sysv/linux/powerpc/powerpc64/umount.c: New file.
