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Consolidate non cancellable openat call

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This patch consolidates all the non cancellable openat{64} calls to use
the __openat{64}_nocancel identifier.  For non cancellable targets it will
be just a macro to call the default respective symbol while on Linux
will be a internal one.

Checked on x86_64-linux-gnu, x86_64-linux-gnu-x32, and i686-linux-gnu.

	* sysdeps/generic/not-cancel.h (openat_not_cancel): Remove macro.
	(openat_not_cancel_3): Likewise.
	(openat64_not_cancel_3): Likewise).
	(openat_not_cancel_3): Likewise).
	* sysdeps/unix/sysv/linux/not-cancel.h (openat_not_cancel): Remove
	macro.
	(openat_not_cancel_3): Likewise.
	(openat64_not_cancel): Likewise.
	(openat64_not_cancel_3): Likewise.
	* sysdeps/unix/sysv/linux/openat.c (__openat_nocancel): New function.
	* sysdeps/unix/sysv/linux/openat64.c (__openat64_nocancel): Likewise.
	* io/ftw.c (open_dir_stream): Replace openat{64}_not_cancel{_3} with
	__open{64}_nocancel.
	* sysdeps/mach/hurd/opendir.c (__opendirat): Likewise.
	* sysdeps/posix/getcwd.c (__getcwd): Likewise.
	* sysdeps/posix/opendir.c (__opendirat): Likewise.
This commit is contained in:
Adhemerval Zanella
2017-07-03 15:00:26 -03:00
parent 65a086db91
commit 0bb2fabcb3
9 changed files with 87 additions and 30 deletions
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36
sysdeps/unix/sysv/linux/openat64.c
View File

@ -19,6 +19,13 @@
#include <stdarg.h>
#include <sysdep-cancel.h>
#include <not-cancel.h>
#ifdef __OFF_T_MATCHES_OFF64_T
# define EXTRA_OPEN_FLAGS 0
#else
# define EXTRA_OPEN_FLAGS O_LARGEFILE
#endif
/* Open FILE with access OFLAG. Interpret relative paths relative to
the directory associated with FD. If OFLAG includes O_CREAT or
@ -35,12 +42,6 @@ __libc_openat64 (int fd, const char *file, int oflag, ...)
va_end (arg);
}
#ifdef __OFF_T_MATCHES_OFF64_T
# define EXTRA_OPEN_FLAGS 0
#else
# define EXTRA_OPEN_FLAGS O_LARGEFILE
#endif
return SYSCALL_CANCEL (openat, fd, file, oflag | EXTRA_OPEN_FLAGS, mode);
}
@ -48,8 +49,31 @@ strong_alias (__libc_openat64, __openat64)
libc_hidden_weak (__openat64)
weak_alias (__libc_openat64, openat64)
#if !IS_IN (rtld)
int
__openat64_nocancel (int fd, const char *file, int oflag, ...)
{
mode_t mode = 0;
if (__OPEN_NEEDS_MODE (oflag))
{
va_list arg;
va_start (arg, oflag);
mode = va_arg (arg, mode_t);
va_end (arg);
}
return INLINE_SYSCALL_CALL (openat, fd, file, oflag | EXTRA_OPEN_FLAGS,
mode);
}
#else
strong_alias (__libc_openat64, __openat64_nocancel)
#endif
libc_hidden_def (__openat64_nocancel)
#ifdef __OFF_T_MATCHES_OFF64_T
strong_alias (__libc_openat64, __openat)
libc_hidden_weak (__openat)
weak_alias (__libc_openat64, openat)
strong_alias (__openat64_nocancel, __openat_nocancel)
#endif