Differential D26668 Diff 78167 sys/sys/eventfd.h

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sys/sys/eventfd.h

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				/*-
				* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
				markjUnsubmitted Not Done Inline Actions Missing a copyright header. markj: Missing a copyright header.
				val_packett.coolUnsubmitted Done Inline Actions With these trivial API headers, I don't even know who should have the copyright. I can put myself I guess.. val_packett.cool: With these trivial API headers, I don't even know who should have the copyright. I can put…
				*
				* Copyright (c) 2020 Greg V
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				jan.kokemueller_gmail.comUnsubmitted Done Inline Actions EFD_* flags are using Linux values of CLOEXEC and NONBLOCK to avoid extra conversions on the Linuxulator side. Illumos also did it like this btw; I wonder why Illumus did it like this. With a native syscall I would expect `EFD_CLOEXEC == O_CLOEXEC` and for the Linux compat layer to do a translation between `LINUX_EFD_CLOEXEC` and the "native" `EFD_CLOEXEC`. Similar for `EFD_NONBLOCK`. That way the Linux constants don't leak out unnecessarily. jan.kokemueller_gmail.com: > EFD_* flags are using Linux values of CLOEXEC and NONBLOCK to avoid extra conversions on the…
				kibAuthorUnsubmitted Done Inline Actions BTW using octal for constants is very unusual for FreeBSD. kib: BTW using octal for constants is very unusual for FreeBSD.
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
				* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
				* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				* SUCH DAMAGE.
				*/

				#ifndef _SYS_EVENTFD_H_
				#define _SYS_EVENTFD_H_

				#include <sys/types.h>
				#include <sys/fcntl.h>

				typedef uint64_t eventfd_t;

				#define EFD_SEMAPHORE (1 << 0)
				#define EFD_CLOEXEC O_CLOEXEC
				#define EFD_NONBLOCK O_NONBLOCK

				#ifdef _KERNEL

				struct thread;

				int eventfd_create(struct thread *td, uint32_t initval, int flags);

				#else

				#include <sys/cdefs.h>

				kibAuthorUnsubmitted Done Inline Actions This include is excessive. sys/types.h already includes cdefs.h (as well as almost all other important headers). kib: This include is excessive. sys/types.h already includes cdefs.h (as well as almost all other…
				__BEGIN_DECLS
				int eventfd(unsigned int initval, int flags);
				int eventfd_read(int fd, eventfd_t *value);
				int eventfd_write(int fd, eventfd_t value);
				__END_DECLS

				#endif /* !_KERNEL */

				#endif /* !_SYS_EVENTFD_H_ */