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Remove NO_CANCELLATION macro

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The NO_CANCELLATION macro is used currently on generic headers to
define non cancellable syscalls and on Linux fcntl to implement the non
cancellable variation.  Former should be single-handled by not-cancel.h
header and former could be simplified build both cancellable and non
cancellable for default objects and alias the non-cancellable to default
one for rtld ones (since Linux already support cancellation as default).

This patch thus removes the NO_CANCELLATION macro and its usage.  The
generic non cancellable fcntl is route to internal fcntl.

Checked on x86_64-linux-gnu and i686-linux-gnu.  Also checked with
a build again major ABIs.

	* sysdeps/generic/not-cancel.h (NO_CANCELLATION): Remove macro.
	* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
	(NO_CANCELLATION): Likewise.
	* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
	(NO_CANCELLATION): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
	(NO_CANCELLATION): Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h (NO_CANCELLATION):
	Likewise
	* sysdeps/unix/sysv/linux/sparc/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h (NO_CANCELLATION):
	Likewise.
	* sysdeps/unix/sysv/linux/not-cancel.h (__fcntl_nocancel): Add
	hidden prototype.
	* sysdeps/unix/sysv/linux/fcntl.c (__fcntl_nocancel): Define only
	for !IS_IN (rtld) and remove NO_CANCELLATION usage.
This commit is contained in:
Adhemerval Zanella 2017-08-03 14:29:06 -03:00
parent 9eee633b68
commit 102dde842a
21 changed files with 63 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
ChangeLog
View File

@ -1,3 +1,45 @@
2017-08-31 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* sysdeps/generic/not-cancel.h (NO_CANCELLATION): Remove macro.
* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
(NO_CANCELLATION): Likewise.
* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
(NO_CANCELLATION): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
(NO_CANCELLATION): Likewise.
* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h (NO_CANCELLATION):
Likewise
* sysdeps/unix/sysv/linux/sparc/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h (NO_CANCELLATION):
Likewise.
* sysdeps/unix/sysv/linux/not-cancel.h (__fcntl_nocancel): Add
hidden prototype.
* sysdeps/unix/sysv/linux/fcntl.c (__fcntl_nocancel): Define only
for !IS_IN (rtld) and remove NO_CANCELLATION usage.
2017-08-31 Steve Ellcey <sellcey@cavium.com>
* sysdeps/aarch64/dl-irel.h: (elf_ifunc_invoke): Change argument type

2
sysdeps/generic/not-cancel.h
View File

@ -44,5 +44,3 @@
__nanosleep (requested_time, remaining)
#define __fcntl_nocancel(fd, cmd, ...) \
__fcntl (fd, cmd, __VA_ARGS__)
#define NO_CANCELLATION 1

1
sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h
View File

@ -41,7 +41,6 @@ extern int __local_multiple_threads attribute_hidden;
/* For rtld, et cetera. */
# define SINGLE_THREAD_P 1
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
View File

@ -39,7 +39,6 @@ extern int __local_multiple_threads attribute_hidden;
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
View File

@ -40,7 +40,6 @@ extern int __local_multiple_threads attribute_hidden;
/* For rtld, et cetera. */
# define SINGLE_THREAD_P 1
# define NO_CANCELLATION 1
#endif

34
sysdeps/unix/sysv/linux/fcntl.c
View File

@ -19,6 +19,7 @@
#include <stdarg.h>
#include <errno.h>
#include <sysdep-cancel.h>
#include <not-cancel.h>
#ifndef __NR_fcntl64
# define __NR_fcntl64 __NR_fcntl
@ -46,21 +47,6 @@ fcntl_common (int fd, int cmd, void *arg)
return INLINE_SYSCALL_CALL (fcntl64, fd, cmd, (void *) arg);
}
#ifndef NO_CANCELLATION
int
__fcntl_nocancel (int fd, int cmd, ...)
{
va_list ap;
void *arg;
va_start (ap, cmd);
arg = va_arg (ap, void *);
va_end (ap);
return fcntl_common (fd, cmd, arg);
}
#endif
int
__libc_fcntl (int fd, int cmd, ...)
{
@ -80,6 +66,24 @@ __libc_fcntl (int fd, int cmd, ...)
}
libc_hidden_def (__libc_fcntl)
#if !IS_IN (rtld)
int
__fcntl_nocancel (int fd, int cmd, ...)
{
va_list ap;
void *arg;
va_start (ap, cmd);
arg = va_arg (ap, void *);
va_end (ap);
return fcntl_common (fd, cmd, arg);
}
#else
strong_alias (__libc_fcntl, __fcntl_nocancel)
#endif
libc_hidden_def (__fcntl_nocancel)
weak_alias (__libc_fcntl, __fcntl)
libc_hidden_weak (__fcntl)
weak_alias (__libc_fcntl, fcntl)

1
sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
View File

@ -38,7 +38,6 @@
/* This code should never be used but we define it anyhow. */
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif
/* IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt) */

1
sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
View File

@ -28,7 +28,6 @@
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
View File

@ -25,7 +25,6 @@
__glibc_likely (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0)
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif
#define RTLD_SINGLE_THREAD_P \

1
sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h
View File

@ -27,7 +27,6 @@
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION (1)
#endif

1
sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
View File

@ -38,7 +38,6 @@ extern int __local_multiple_threads attribute_hidden;
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION (1)
#endif

1
sysdeps/unix/sysv/linux/mips/sysdep-cancel.h
View File

@ -28,7 +28,6 @@
#else
# define SINGLE_THREAD_P 1
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h
View File

@ -28,7 +28,6 @@
#else
# define SINGLE_THREAD_P 1
# define NO_CANCELLATION 1
#endif

3
sysdeps/unix/sysv/linux/not-cancel.h
View File

@ -86,6 +86,7 @@ __typeof (__nanosleep) __nanosleep_nocancel;
hidden_proto (__nanosleep_nocancel)
/* Uncancelable fcntl. */
__typeof (__fcntl) __fcntl_nocancel attribute_hidden;
__typeof (__fcntl) __fcntl_nocancel;
libc_hidden_proto (__fcntl_nocancel)
#endif /* NOT_CANCEL_H */

1
sysdeps/unix/sysv/linux/powerpc/sysdep-cancel.h
View File

@ -28,7 +28,6 @@
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
View File

@ -28,7 +28,6 @@
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
View File

@ -43,7 +43,6 @@ extern int __local_multiple_threads attribute_hidden;
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
View File

@ -27,7 +27,6 @@
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/sparc/sysdep-cancel.h
View File

@ -28,7 +28,6 @@
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/tile/sysdep-cancel.h
View File

@ -28,7 +28,6 @@
#else
# define SINGLE_THREAD_P 1
# define NO_CANCELLATION 1
#endif

1
sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h
View File

@ -43,7 +43,6 @@ extern int __local_multiple_threads attribute_hidden;
#else
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif