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/* Uncancelable versions of cancelable interfaces. Linux/NPTL version.
Copyright (C) 2003-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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 <sysdep.h>
#include <errno.h>
#include <unistd.h>
#include <sys/poll.h>
#include <sys/syscall.h>
#include <sys/wait.h>
#include <time.h>
#include <sys/random.h>
/* Non cancellable open syscall. */
__typeof (open) __open_nocancel;
/* Non cancellable open syscall (LFS version). */
__typeof (open64) __open64_nocancel;
/* Non cancellable openat syscall. */
__typeof (openat) __openat_nocancel;
/* Non cacellable openat syscall (LFS version). */
__typeof (openat64) __openat64_nocancel;
/* Non cancellable read syscall. */
__typeof (__read) __read_nocancel;
/* Non cancellable pread syscall (LFS version). */
__typeof (__pread64) __pread64_nocancel;
/* Uncancelable write. */
__typeof (__write) __write_nocancel;
/* Uncancelable close. */
__typeof (__close) __close_nocancel;
/* Uncancelable fcntl. */
__typeof (__fcntl) __fcntl64_nocancel;
#if IS_IN (libc) || IS_IN (rtld)
hidden_proto (__open_nocancel)
hidden_proto (__open64_nocancel)
hidden_proto (__openat_nocancel)
hidden_proto (__openat64_nocancel)
hidden_proto (__read_nocancel)
hidden_proto (__pread64_nocancel)
hidden_proto (__write_nocancel)
hidden_proto (__close_nocancel)
hidden_proto (__fcntl64_nocancel)
#endif
/* Non cancellable close syscall that does not also set errno in case of
failure. */
static inline void
__close_nocancel_nostatus (int fd)
{
__close_nocancel (fd);
}
/* Non cancellable writev syscall that does not also set errno in case of
failure. */
static inline void
__writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
{
INTERNAL_SYSCALL_CALL (writev, fd, iov, iovcnt);
}
static inline ssize_t
__getrandom_nocancel_direct (void *buf, size_t buflen, unsigned int flags)
{
return INLINE_SYSCALL_CALL (getrandom, buf, buflen, flags);
}
__typeof (getrandom) __getrandom_nocancel attribute_hidden;
/* Non cancellable getrandom syscall that does not also set errno in case of
failure. */
static inline ssize_t
__getrandom_nocancel_nostatus_direct (void *buf, size_t buflen, unsigned int flags)
{
return INTERNAL_SYSCALL_CALL (getrandom, buf, buflen, flags);
}
static inline int
__poll_infinity_nocancel (struct pollfd *fds, nfds_t nfds)
{
return INLINE_SYSCALL_CALL (ppoll, fds, nfds, NULL, NULL, 0);
}
#endif /* NOT_CANCEL_H */
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