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nptl: Remove tst-cancel-wrappers test and related macros

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With upcoming BZ#12683 fix, syscall cancellation is not more handled
by {libc,pthread,librt}_{enable,disable}_asynccancel symbols.  This renders
both LIBC_CANCEL_HANDLED and empty declaration and tst-cancel-wrappers.sh
unrequired.  This patch removes both the macro and the nptl test.

Checked on x86_64-linux-gnu.

	* io/creat.c (LIBC_CANCEL_HANDLED): Remove macro.
	* io/ppoll.c (LIBC_CANCEL_HANDLED): Likewise.
	* misc/pselect.c (LIBC_CANCEL_HANDLED): Likewise.
	* nptl/pthreadP.h (LIBC_CANCEL_HANDLED): Likewise.
	* sysdeps/generic/sysdep-cancel.h (LIBC_CANCEL_HANDLED): Likewise.
	* sysdeps/mach/hurd/sysdep-cancel.h (LIBC_CANCEL_HANDLED): Likewise.
	* sysdeps/posix/pause.c (LIBC_CANCEL_HANDLED): Likewise.
	* sysdeps/posix/sigpause.c (LIBC_CANCEL_HANDLED): Likewise.
	* sysdeps/unix/sysv/linux/creat.c (LIBC_CANCEL_HANDLED): Likewise.
	* sysdeps/unix/sysv/linux/creat64.c (LIBC_CANCEL_HANDLED): Likewise.
	* sysdeps/unix/sysv/linux/sigwait.c (LIBC_CANCEL_HANDLED): Likewise.
	* sysdeps/unix/sysv/linux/sigwaitinfo.c (LIBC_CANCEL_HANDLED):
	Likewise.
	* nptl/Makefile [$(run-built-tests) = yes] (tests-special): Remove
	tst-cancel-wrappers.sh.
	(generated): Remove tst-cancel-wrappers.out.
	(tst-cancel-wrappers.out): Remove rule.
	* nptl/tst-cancel-wrappers.sh: Remove file.
This commit is contained in:
Adhemerval Zanella 2018-05-08 16:28:18 -03:00
parent 7d7af8f17d
commit 17cc27d5b7
15 changed files with 23 additions and 142 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
ChangeLog
View File

@ -1,3 +1,24 @@
2019-01-03 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* io/creat.c (LIBC_CANCEL_HANDLED): Remove macro.
* io/ppoll.c (LIBC_CANCEL_HANDLED): Likewise.
* misc/pselect.c (LIBC_CANCEL_HANDLED): Likewise.
* nptl/pthreadP.h (LIBC_CANCEL_HANDLED): Likewise.
* sysdeps/generic/sysdep-cancel.h (LIBC_CANCEL_HANDLED): Likewise.
* sysdeps/mach/hurd/sysdep-cancel.h (LIBC_CANCEL_HANDLED): Likewise.
* sysdeps/posix/pause.c (LIBC_CANCEL_HANDLED): Likewise.
* sysdeps/posix/sigpause.c (LIBC_CANCEL_HANDLED): Likewise.
* sysdeps/unix/sysv/linux/creat.c (LIBC_CANCEL_HANDLED): Likewise.
* sysdeps/unix/sysv/linux/creat64.c (LIBC_CANCEL_HANDLED): Likewise.
* sysdeps/unix/sysv/linux/sigwait.c (LIBC_CANCEL_HANDLED): Likewise.
* sysdeps/unix/sysv/linux/sigwaitinfo.c (LIBC_CANCEL_HANDLED):
Likewise.
* nptl/Makefile [$(run-built-tests) = yes] (tests-special): Remove
tst-cancel-wrappers.sh.
(generated): Remove tst-cancel-wrappers.out.
(tst-cancel-wrappers.out): Remove rule.
* nptl/tst-cancel-wrappers.sh: Remove file.
2019-01-03 Szabolcs Nagy <szabolcs.nagy@arm.com>
* sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h: Add comment.

3
io/creat.c
View File

@ -27,6 +27,3 @@ creat (const char *file, mode_t mode)
{
return __open (file, O_WRONLY|O_CREAT|O_TRUNC, mode);
}
/* __open handles cancellation. */
LIBC_CANCEL_HANDLED ();

2
io/ppoll.c
View File

@ -70,7 +70,5 @@ ppoll (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
}
#ifndef ppoll
/* __poll handles cancellation. */
LIBC_CANCEL_HANDLED ();
libc_hidden_def (ppoll);
#endif

2
misc/pselect.c
View File

@ -73,6 +73,4 @@ __pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
}
#ifndef __pselect
weak_alias (__pselect, pselect)
/* __select handles cancellation. */
LIBC_CANCEL_HANDLED ();
#endif

18
nptl/Makefile
View File

@ -465,8 +465,7 @@ tests-reverse += tst-cancel5 tst-cancel23 tst-vfork1x tst-vfork2x
ifeq ($(run-built-tests),yes)
tests-special += $(objpfx)tst-stack3-mem.out $(objpfx)tst-oddstacklimit.out
ifeq ($(build-shared),yes)
tests-special += $(objpfx)tst-tls6.out $(objpfx)tst-cleanup0-cmp.out \
$(objpfx)tst-cancel-wrappers.out
tests-special += $(objpfx)tst-tls6.out $(objpfx)tst-cleanup0-cmp.out
endif
endif
@ -669,8 +668,7 @@ $(objpfx)$(multidir)/crtn.o: $(objpfx)crtn.o $(objpfx)$(multidir)/
ln -f $< $@
endif
generated += multidir.mk tst-atfork2.mtrace tst-cancel-wrappers.out \
tst-tls6.out
generated += multidir.mk tst-atfork2.mtrace tst-tls6.out
generated += $(objpfx)tst-atfork2.mtrace \
$(addsuffix .so,$(strip $(modules-names)))
@ -681,18 +679,6 @@ LDFLAGS-pthread.so += -e __nptl_main
$(objpfx)pt-interp.os: $(common-objpfx)runtime-linker.h
endif
ifeq ($(run-built-tests),yes)
ifeq (yes,$(build-shared))
$(objpfx)tst-cancel-wrappers.out: tst-cancel-wrappers.sh
$(SHELL) $< '$(NM)' \
$(common-objpfx)libc_pic.a \
$(common-objpfx)libc.a \
$(objpfx)libpthread_pic.a \
$(objpfx)libpthread.a > $@; \
$(evaluate-test)
endif
endif
tst-exec4-ARGS = $(host-test-program-cmd)
$(objpfx)tst-execstack: $(libdl)

10
nptl/pthreadP.h
View File

@ -325,27 +325,17 @@ __do_cancel (void)
/* Same as CANCEL_RESET, but for use in libc.so. */
# define LIBC_CANCEL_RESET(oldtype) \
__libc_disable_asynccancel (oldtype)
# define LIBC_CANCEL_HANDLED() \
__asm (".globl " __SYMBOL_PREFIX "__libc_enable_asynccancel"); \
__asm (".globl " __SYMBOL_PREFIX "__libc_disable_asynccancel")
#elif IS_IN (libpthread)
# define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
# define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
# define LIBC_CANCEL_HANDLED() \
__asm (".globl " __SYMBOL_PREFIX "__pthread_enable_asynccancel"); \
__asm (".globl " __SYMBOL_PREFIX "__pthread_disable_asynccancel")
#elif IS_IN (librt)
# define LIBC_CANCEL_ASYNC() \
__librt_enable_asynccancel ()
# define LIBC_CANCEL_RESET(val) \
__librt_disable_asynccancel (val)
# define LIBC_CANCEL_HANDLED() \
__asm (".globl " __SYMBOL_PREFIX "__librt_enable_asynccancel"); \
__asm (".globl " __SYMBOL_PREFIX "__librt_disable_asynccancel")
#else
# define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */
# define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */
# define LIBC_CANCEL_HANDLED() /* Nothing. */
#endif

92
nptl/tst-cancel-wrappers.sh
View File

@ -1,92 +0,0 @@
#!/bin/sh
# Test whether all cancelable functions are cancelable.
# Copyright (C) 2002-2019 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.
NM="$1"; shift
while [ $# -gt 0 ]; do
( $NM -P $1; echo 'end[end]:' ) | gawk ' BEGIN {
C["accept"]=1
C["close"]=1
C["connect"]=1
C["creat"]=1
C["fcntl"]=1
C["fdatasync"]=1
C["fsync"]=1
C["msgrcv"]=1
C["msgsnd"]=1
C["msync"]=1
C["nanosleep"]=1
C["open"]=1
C["open64"]=1
C["pause"]=1
C["poll"]=1
C["pread"]=1
C["pread64"]=1
C["pselect"]=1
C["pwrite"]=1
C["pwrite64"]=1
C["read"]=1
C["readv"]=1
C["recv"]=1
C["recvfrom"]=1
C["recvmsg"]=1
C["select"]=1
C["send"]=1
C["sendmsg"]=1
C["sendto"]=1
C["sigpause"]=1
C["sigsuspend"]=1
C["sigwait"]=1
C["sigwaitinfo"]=1
C["tcdrain"]=1
C["wait"]=1
C["waitid"]=1
C["waitpid"]=1
C["write"]=1
C["writev"]=1
C["__xpg_sigpause"]=1
}
/:$/ {
if (seen)
{
if (!seen_enable || !seen_disable)
{
printf "in '$1'(%s) %s'\''s cancellation missing\n", object, seen
ret = 1
}
}
seen=""
seen_enable=""
seen_disable=""
object=gensub(/^.*\[(.*)\]:$/, "\\1", 1, $0)
next
}
{
if (C[$1] && $2 ~ /^[TW]$/)
seen=$1
else if ($1 ~ /^([.]|)__(libc|pthread)_enable_asynccancel$/ && $2 == "U")
seen_enable=1
else if ($1 ~ /^([.]|)__(libc|pthread)_disable_asynccancel$/ && $2 == "U")
seen_disable=1
}
END {
exit ret
}' || exit
shift
done

1
sysdeps/generic/sysdep-cancel.h
View File

@ -5,4 +5,3 @@
#define RTLD_SINGLE_THREAD_P (1)
#define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */
#define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */
#define LIBC_CANCEL_HANDLED() /* Nothing. */

1
sysdeps/mach/hurd/sysdep-cancel.h
View File

@ -6,4 +6,3 @@
#define RTLD_SINGLE_THREAD_P (0)
#define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */
#define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */
#define LIBC_CANCEL_HANDLED() /* Nothing. */

2
sysdeps/posix/pause.c
View File

@ -38,5 +38,3 @@ __libc_pause (void)
return __sigsuspend (&set);
}
weak_alias (__libc_pause, pause)
LIBC_CANCEL_HANDLED (); /* sigsuspend handles our cancellation. */

3
sysdeps/posix/sigpause.c
View File

@ -70,6 +70,3 @@ __xpg_sigpause (int sig)
return __sigpause (sig, 1);
}
strong_alias (__xpg_sigpause, __libc___xpg_sigpause)
/* __sigsuspend handles cancellation. */
LIBC_CANCEL_HANDLED ();

2
sysdeps/unix/sysv/linux/creat.c
View File

@ -35,6 +35,4 @@ __creat (const char *file, mode_t mode)
}
weak_alias (__creat, creat)
LIBC_CANCEL_HANDLED ();
#endif

2
sysdeps/unix/sysv/linux/creat64.c
View File

@ -37,5 +37,3 @@ weak_alias (__creat64, creat64)
strong_alias (__creat64, __creat)
weak_alias (__creat64, creat)
#endif
LIBC_CANCEL_HANDLED ();

3
sysdeps/unix/sysv/linux/sigwait.c
View File

@ -37,6 +37,3 @@ __sigwait (const sigset_t *set, int *sig)
libc_hidden_def (__sigwait)
weak_alias (__sigwait, sigwait)
strong_alias (__sigwait, __libc_sigwait)
/* __sigtimedwait handles cancellation. */
LIBC_CANCEL_HANDLED ();

3
sysdeps/unix/sysv/linux/sigwaitinfo.c
View File

@ -28,6 +28,3 @@ __sigwaitinfo (const sigset_t *set, siginfo_t *info)
libc_hidden_def (__sigwaitinfo)
weak_alias (__sigwaitinfo, sigwaitinfo)
strong_alias (__sigwaitinfo, __libc_sigwaitinfo)
/* __sigtimedwait handles cancellation. */
LIBC_CANCEL_HANDLED ();