ladybird/Userland/Libraries/LibC/sys/select.h

/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

// Make sure we have the time type definitions. We include the kernel API
// header and not the LibC <sys/time.h> to avoid issues with circular includes.
#include <Kernel/API/POSIX/sys/time.h>

// Includes essentially mandated by POSIX:
// https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_select.h.html
#include <signal.h>
#include <time.h>

#include <fd_set.h>
#include <string.h>
#include <sys/cdefs.h>
#include <sys/types.h>

__BEGIN_DECLS

int select(int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, struct timeval* timeout);
int pselect(int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, const struct timespec* timeout, sigset_t const* sigmask);

__END_DECLS
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header. 2020-01-18 09:38:21 +01:00			`/*`
			`* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>`
			`*`
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt * 2021-04-22 01:24:48 -07:00			`* SPDX-License-Identifier: BSD-2-Clause`
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header. 2020-01-18 09:38:21 +01:00			`*/`

Oops, forgot to add the select() files to LibC a while ago. 2019-01-17 01:41:13 +01:00			`#pragma once`

LibC: Fix struct declaration visibility Isn't "expected struct timeval , but argument is of type struct timeval " a fun error message? C considers a 'struct foo' mentioned inside a function argument to be a distinct type from 'struct foo' declared on the global level, but only if the in-function definition comes first. So we need to ensure that struct timeval is declared (either fully, or forward-declared) before we declare select() and pselect(). This was taken care of by including <sys/time.h>, but https://github.com/SerenityOS/serenity/pull/20044 made it so that <sys/time.h> itself includes <sys/select.h>. So if the user's program includes <sys/time.h> (before possibly including <sys/select.h>), then <sys/select.h>'s include of <sys/time.h> will turn into a no-op (since <sys/time.h> is already being included), yet there will not have been a struct timeval definition yet, and we'd get the fun error message. Fix this by including <Kernel/API/POSIX/sys/time.h> instead of <sys/time.h> 2023-07-23 17:13:17 +03:00			`// Make sure we have the time type definitions. We include the kernel API`
			`// header and not the LibC <sys/time.h> to avoid issues with circular includes.`
			`#include <Kernel/API/POSIX/sys/time.h>`

LibC: Add most of the "header may make visible" dependencies from POSIX 2023-07-15 15:22:45 +02:00			`// Includes essentially mandated by POSIX:`
			`// https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_select.h.html`
LibC: Implement pselect pselect() is similar() to select(), but it takes its timeout as timespec instead of as timeval, and it takes an additional sigmask parameter. Change the sys$select parameters to match pselect() and implement select() in terms of pselect(). 2020-06-21 13:54:41 -04:00			`#include <signal.h>`
LibC: Add most of the "header may make visible" dependencies from POSIX 2023-07-15 15:22:45 +02:00			`#include <time.h>`

			`#include <fd_set.h>`
Add clang-format file Also run it across the whole tree to get everything using the One True Style. We don't yet run this in an automated fashion as it's a little slow, but there is a snippet to do so in makeall.sh. 2019-05-28 11:53:16 +02:00			`#include <string.h>`
Oops, forgot to add the select() files to LibC a while ago. 2019-01-17 01:41:13 +01:00			`#include <sys/cdefs.h>`
			`#include <sys/types.h>`

			`__BEGIN_DECLS`

			`int select(int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, struct timeval* timeout);`
Everywhere: Run clang-format 2022-04-01 20:58:27 +03:00			`int pselect(int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, const struct timespec* timeout, sigset_t const* sigmask);`
Oops, forgot to add the select() files to LibC a while ago. 2019-01-17 01:41:13 +01:00
			`__END_DECLS`