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d227fd53cb
It is avoid a build failure on clang where it can not redeclare function attribute after its first use. Reviewed-by: Fangrui Song <maskray@google.com>
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/* Uncancelable versions of cancelable interfaces. Linux/NPTL version.
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Copyright (C) 2003-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef NOT_CANCEL_H
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# define NOT_CANCEL_H
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#include <fcntl.h>
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#include <sysdep.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/poll.h>
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#include <sys/syscall.h>
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#include <sys/wait.h>
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#include <time.h>
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/* Non cancellable open syscall. */
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__typeof (open) __open_nocancel;
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/* Non cancellable open syscall (LFS version). */
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__typeof (open64) __open64_nocancel;
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/* Non cancellable openat syscall. */
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__typeof (openat) __openat_nocancel;
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/* Non cacellable openat syscall (LFS version). */
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__typeof (openat64) __openat64_nocancel;
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/* Non cancellable read syscall. */
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__typeof (__read) __read_nocancel;
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/* Non cancellable pread syscall (LFS version). */
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__typeof (__pread64) __pread64_nocancel;
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/* Uncancelable write. */
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__typeof (__write) __write_nocancel;
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/* Uncancelable close. */
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__typeof (__close) __close_nocancel;
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/* Uncancelable fcntl. */
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__typeof (__fcntl) __fcntl64_nocancel;
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#if IS_IN (libc) || IS_IN (rtld)
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hidden_proto (__open_nocancel)
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hidden_proto (__open64_nocancel)
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hidden_proto (__openat_nocancel)
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hidden_proto (__openat64_nocancel)
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hidden_proto (__read_nocancel)
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hidden_proto (__pread64_nocancel)
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hidden_proto (__write_nocancel)
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hidden_proto (__close_nocancel)
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hidden_proto (__fcntl64_nocancel)
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#endif
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/* Non cancellable close syscall that does not also set errno in case of
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failure. */
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static inline void
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__close_nocancel_nostatus (int fd)
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{
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__close_nocancel (fd);
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}
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/* Non cancellable writev syscall that does not also set errno in case of
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failure. */
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static inline void
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__writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
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{
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INTERNAL_SYSCALL_CALL (writev, fd, iov, iovcnt);
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}
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static inline ssize_t
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__getrandom_nocancel (void *buf, size_t buflen, unsigned int flags)
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{
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return INTERNAL_SYSCALL_CALL (getrandom, buf, buflen, flags);
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}
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static inline int
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__poll_infinity_nocancel (struct pollfd *fds, nfds_t nfds)
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{
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return INLINE_SYSCALL_CALL (ppoll, fds, nfds, NULL, NULL, 0);
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}
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#endif /* NOT_CANCEL_H */
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