glibc/sysdeps/mach/hurd/not-cancel.h
Samuel Thibault 662de0889a hurd: Make write and pwrite64 cancellation points
and add _nocancel variants.

* sysdeps/mach/hurd/write.c (__libc_write): Call __write_nocancel
surrounded by enabling async cancel, to replace implementation moved
to...
* sysdeps/mach/hurd/write_nocancel.c (__write_nocancel): ... here.
* sysdeps/mach/hurd/pwrite64.c (__libc_pwrite64): Call
__pwrite64_nocancel surrounded by enabling async cancel, to replace
implementation moved to...
* sysdeps/mach/hurd/pwrite64_nocancel.c (__pwrite64_nocancel): ... here.
* sysdeps/mach/hurd/Makefile (sysdep_routines): Add write_nocancel and
pwrite64_nocancel.
* sysdeps/mach/hurd/not-cancel.h (__write_nocancel,
__pwrite64_nocancel): Replace macros with prototypes with a hidden proto on
libc.

* sysdeps/mach/hurd/dl-sysdep.c (__write_nocancel): New alias, check
that it is not hidden.
* sysdeps/mach/hurd/Versions (libc.GLIBC_PRIVATE): Add __write_nocancel.
(ld.GLIBC_PRIVATE): Add __write_nocancel.
* sysdeps/mach/hurd/i386/localplt.data (__write_nocancel): Add
reference.
2020-06-14 15:53:21 +00:00

73 lines
2.3 KiB
C

/* Uncancelable versions of cancelable interfaces. Hurd version.
Copyright (C) 2003-2020 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, see
<https://www.gnu.org/licenses/>. */
#ifndef NOT_CANCEL_H
# define NOT_CANCEL_H
#include <fcntl.h>
#include <unistd.h>
#include <sys/wait.h>
#include <time.h>
#include <sys/uio.h>
#include <hurd.h>
#include <hurd/fd.h>
/* For now we have none. Map the name to the normal functions. */
#define __open_nocancel(...) \
__open (__VA_ARGS__)
#define __open64_nocancel(...) \
__open64 (__VA_ARGS__)
#define __openat_nocancel(...) \
__openat (__VA_ARGS__)
#define __openat64_nocancel(...) \
__openat64 (__VA_ARGS__)
#define __close_nocancel(fd) \
__close (fd)
void __close_nocancel_nostatus (int fd);
/* Non cancellable read syscall. */
__typeof (__read) __read_nocancel;
/* Non cancellable pread syscall (LFS version). */
__typeof (__pread64) __pread64_nocancel;
/* Non cancellable write syscall. */
__typeof (__write) __write_nocancel;
/* Non cancellable pwrite syscall (LFS version). */
__typeof (__pwrite64) __pwrite64_nocancel;
#define __writev_nocancel_nostatus(fd, iov, n) \
(void) __writev (fd, iov, n)
# define __waitpid_nocancel(pid, stat_loc, options) \
__waitpid (pid, stat_loc, options)
#define __fcntl64_nocancel(fd, cmd, ...) \
__fcntl64 (fd, cmd, __VA_ARGS__)
#if IS_IN (libc)
hidden_proto (__read_nocancel)
hidden_proto (__pread64_nocancel)
hidden_proto (__write_nocancel)
hidden_proto (__pwrite64_nocancel)
hidden_proto (__close_nocancel_nostatus)
#endif
#endif /* NOT_CANCEL_H */