mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 17:50:20 +00:00
ce42435cab
* sysdeps/generic/utmp_file.c: Use not-cancelable syscalls all over the place. It would be allowed to have these fucntions as cancellation points but the cleanup would be ugly and a lot of work. * sysdeps/generic/not-cancel.h (fcntl_not_cancel): Define. * sysdeps/unix/sysv/linux/not-cancel.h (fcntl_not_cancel): Define. * include/fcntl.h (__fcntl_nocancel): Declare. * sysdeps/unix/sysv/linux/fcntl.c: New file. * sysdeps/unix/sysv/linux/i386/fcntl.c (__libc_fcntl): Only enable cancellation if absolutely needed. (__fcntl_nocancel): Define. * posix/unistd.h (gethostid): Remove __THROW. Clarify comment. * sysdeps/unix/sysv/linux/Makefile (CFLAGS-gethostid.c): Add -fexceptions. * sysdeps/unix/sysv/linux/gethostid.c (gethostid): Use extend_alloca. * resolv/res_init.c (__res_nclose): Use close_not_cancel_no_status instead of __close.
76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
/* Uncancelable versions of cancelable interfaces. Linux/NPTL version.
|
|
Copyright (C) 2003 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
|
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
|
|
#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
|
|
extern int __open_nocancel (const char *, int, ...) attribute_hidden;
|
|
extern int __close_nocancel (int) attribute_hidden;
|
|
extern int __read_nocancel (int, void *, size_t) attribute_hidden;
|
|
extern int __write_nocancel (int, const void *, size_t) attribute_hidden;
|
|
extern pid_t __waitpid_nocancel (pid_t, int *, int) attribute_hidden;
|
|
#else
|
|
#define __open_nocancel(name, ...) __open (name, __VA_ARGS__)
|
|
#define __close_nocancel(fd) __close (fd)
|
|
#define __read_nocancel(fd, buf, len) __read (fd, buf, len)
|
|
#define __write_nocancel(fd, buf, len) __write (fd, buf, len)
|
|
#define __waitpid_nocancel(pid, stat_loc, options) \
|
|
__waitpid (pid, stat_loc, options)
|
|
#endif
|
|
|
|
/* Uncancelable open. */
|
|
#define open_not_cancel(name, flags, mode) \
|
|
__open_nocancel (name, flags, mode)
|
|
#define open_not_cancel_2(name, flags) \
|
|
__open_nocancel (name, flags)
|
|
|
|
/* Uncancelable close. */
|
|
#define close_not_cancel(fd) \
|
|
__close_nocancel (fd)
|
|
#define close_not_cancel_no_status(fd) \
|
|
(void) ({ INTERNAL_SYSCALL_DECL (err); \
|
|
INTERNAL_SYSCALL (close, err, 1, (fd)); })
|
|
|
|
/* Uncancelable read. */
|
|
#define read_not_cancel(fd, buf, n) \
|
|
__read_nocancel (fd, buf, n)
|
|
|
|
/* Uncancelable write. */
|
|
#define write_not_cancel(fd, buf, n) \
|
|
__write_nocancel (fd, buf, n)
|
|
|
|
/* Uncancelable writev. */
|
|
#define writev_not_cancel_no_status(fd, iov, n) \
|
|
(void) ({ INTERNAL_SYSCALL_DECL (err); \
|
|
INTERNAL_SYSCALL (writev, err, 3, (fd), (iov), (n)); })
|
|
|
|
/* Uncancelable fcntl. */
|
|
#define fcntl_not_cancel(fd, cmd, val) \
|
|
__fcntl_nocancel (fd, cmd, val)
|
|
|
|
/* Uncancelable waitpid. */
|
|
#ifdef __NR_waitpid
|
|
# define waitpid_not_cancel(pid, stat_loc, options) \
|
|
__waitpid_nocancel (pid, stat_loc, options)
|
|
#else
|
|
# define waitpid_not_cancel(pid, stat_loc, options) \
|
|
INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL)
|
|
#endif
|