glibc.git/include/mqueue.h, branch master

Linux: Move mq_send, mq_timedsend, __mq_timedsend_time64 to libc

2021-06-25T10:21:12+00:00

The symbols were moved using scripts/move-symbol-to-libc.py.

Reviewed-by: Adhemerva Zanella

Linux: Move mq_receive, mq_timedreceive, __mq_timedreceive_time64 to libc

2021-06-25T10:21:12+00:00

The symbols were moved using scripts/move-symbol-to-libc.py.

Reviewed-by: Adhemerva Zanella

Linux: Move mq_notify from librt to libc

2021-06-25T10:20:47+00:00

The symbol was moved using scripts/move-symbol-to-libc.py.

An explicit call from fork into the mq_notify implementation replaces
the previous use of pthread_atfork.

Reviewed-by: Adhemerva Zanella

Linux: Move mq_setattr from librt to libc

2021-06-25T10:19:58+00:00

The symbol was moved using scripts/move-symbol-to-libc.py.

To introduce the proper symbol versioning, the implementation of
the system call wrapper us moved to a C file.

Reviewed-by: Adhemerva Zanella

y2038: linux: Provide __mq_timedreceive_time64 implementation

2020-04-06T21:05:11+00:00

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

y2038: linux: Provide __mq_timedsend_time64 implementation

2020-04-06T21:05:11+00:00

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

Fix mq_receive, mq_send mq_timed* namespace (bug 18545).

2015-06-17T20:19:04+00:00

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.

Use IS_IN internally only

2014-11-24T09:54:34+00:00

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.

Remove IS_IN_librt

2014-11-24T06:11:45+00:00

Replace with IS_IN (librt).  Generated code unchanged on x86_64

        * include/mqueue.h: Use IS_IN instead of IS_IN_librt.
        * nptl/pthreadP.h: Likewise.
        * sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/i386/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/mips/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/not-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/waitpid.S: Likewise.
        * sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: Likewise.

Update.

2004-04-13T02:15:43+00:00

2004-04-08  Ulrich Drepper  

	* rt/tst-mqueue3.c: New file.
	* rt/Makefile (tests): Add tst-mqueue3.

2004-04-08  Jakub Jelinek  

	* 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  

	* sysdeps/s390/ffs.c: Don't add ffsl weak alias on s390x.

2004-04-09  Steven Munroe  

	* sysdeps/unix/sysv/linux/powerpc/powerpc64/umount.c: New file.