diff options
| -rw-r--r-- | include/sys/epoll.h | 107 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/Makefile | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/epoll.c | 65 |
3 files changed, 173 insertions, 1 deletions
diff --git a/include/sys/epoll.h b/include/sys/epoll.h new file mode 100644 index 000000000..cffddb58b --- /dev/null +++ b/include/sys/epoll.h @@ -0,0 +1,107 @@ +/* Copyright (C) 2002, 2003, 2004 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_EPOLL_H +#define _SYS_EPOLL_H 1 + +#include <stdint.h> +#include <sys/types.h> + + +enum EPOLL_EVENTS + { + EPOLLIN = 0x001, +#define EPOLLIN EPOLLIN + EPOLLPRI = 0x002, +#define EPOLLPRI EPOLLPRI + EPOLLOUT = 0x004, +#define EPOLLOUT EPOLLOUT + EPOLLRDNORM = 0x040, +#define EPOLLRDNORM EPOLLRDNORM + EPOLLRDBAND = 0x080, +#define EPOLLRDBAND EPOLLRDBAND + EPOLLWRNORM = 0x100, +#define EPOLLWRNORM EPOLLWRNORM + EPOLLWRBAND = 0x200, +#define EPOLLWRBAND EPOLLWRBAND + EPOLLMSG = 0x400, +#define EPOLLMSG EPOLLMSG + EPOLLERR = 0x008, +#define EPOLLERR EPOLLERR + EPOLLHUP = 0x010, +#define EPOLLHUP EPOLLHUP + EPOLLONESHOT = (1 << 30), +#define EPOLLONESHOT EPOLLONESHOT + EPOLLET = (1 << 31) +#define EPOLLET EPOLLET + }; + + +/* Valid opcodes ( "op" parameter ) to issue to epoll_ctl(). */ +#define EPOLL_CTL_ADD 1 /* Add a file decriptor to the interface. */ +#define EPOLL_CTL_DEL 2 /* Remove a file decriptor from the interface. */ +#define EPOLL_CTL_MOD 3 /* Change file decriptor epoll_event structure. */ + + +typedef union epoll_data +{ + void *ptr; + int fd; + uint32_t u32; + uint64_t u64; +} epoll_data_t; + +struct epoll_event +{ + uint32_t events; /* Epoll events */ + epoll_data_t data; /* User data variable */ +} __attribute__ ((__packed__)); + + +__BEGIN_DECLS + +/* Creates an epoll instance. Returns an fd for the new instance. + The "size" parameter is a hint specifying the number of file + descriptors to be associated with the new instance. The fd + returned by epoll_create() should be closed with close(). */ +extern int epoll_create (int __size) __THROW; + + +/* Manipulate an epoll instance "epfd". Returns 0 in case of success, + -1 in case of error ( the "errno" variable will contain the + specific error code ) The "op" parameter is one of the EPOLL_CTL_* + constants defined above. The "fd" parameter is the target of the + operation. The "event" parameter describes which events the caller + is interested in and any associated user data. */ +extern int epoll_ctl (int __epfd, int __op, int __fd, + struct epoll_event *__event) __THROW; + + +/* Wait for events on an epoll instance "epfd". Returns the number of + triggered events returned in "events" buffer. Or -1 in case of + error with the "errno" variable set to the specific error code. The + "events" parameter is a buffer that will contain triggered + events. The "maxevents" is the maximum number of events to be + returned ( usually size of "events" ). The "timeout" parameter + specifies the maximum wait time in milliseconds (-1 == infinite). */ +extern int epoll_wait (int __epfd, struct epoll_event *__events, + int __maxevents, int __timeout) __THROW; + +__END_DECLS + +#endif /* sys/epoll.h */ diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile index d1187cb7c..b5ea8d261 100644 --- a/libc/sysdeps/linux/common/Makefile +++ b/libc/sysdeps/linux/common/Makefile @@ -24,7 +24,7 @@ CSRC= __rt_sigtimedwait.c __socketcall.c __syscall_fcntl.c \ __syscall_sigaction.c _exit.c access.c acct.c adjtimex.c alarm.c \ bdflush.c capget.c capset.c chdir.c chmod.c chown.c chroot.c \ close.c cmsg_nxthdr.c creat64.c create_module.c delete_module.c \ - dup.c dup2.c execve.c fchdir.c fchmod.c fchown.c fdatasync.c \ + dup.c dup2.c epoll.c execve.c fchdir.c fchmod.c fchown.c fdatasync.c \ flock.c fork.c fstat.c fstat64.c fstatfs.c fsync.c ftruncate.c \ ftruncate64.c get_kernel_syms.c getcwd.c getdents.c getdents64.c \ getdirname.c getdnnm.c getdtablesize.c getegid.c geteuid.c \ diff --git a/libc/sysdeps/linux/common/epoll.c b/libc/sysdeps/linux/common/epoll.c new file mode 100644 index 000000000..27a9fc526 --- /dev/null +++ b/libc/sysdeps/linux/common/epoll.c @@ -0,0 +1,65 @@ +/* vi: set sw=4 ts=4: */ +/* + * epoll_create() / epoll_ctl() / epoll_wait() for uClibc + * + * Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org> + * + * GNU Library General Public License (LGPL) version 2 or later. + */ + +#include "syscalls.h" +#include <sys/epoll.h> + +/* + * epoll_create() + */ +#ifdef __NR_epoll_create +#define __NR___syscall_epoll_create __NR_epoll_create +static inline _syscall1(int, __syscall_epoll_create, int, size); +#endif + +int epoll_create(int size) +{ +#ifdef __NR_epoll_create + return (__syscall_epoll_create(size)); +#else + __set_errno(ENOSYS); + return -1; +#endif +} + +/* + * epoll_ctl() + */ +#ifdef __NR_epoll_ctl +#define __NR___syscall_epoll_ctl __NR_epoll_ctl +static inline _syscall4(int, __syscall_epoll_ctl, int, epfd, int, op, int, fd, struct epoll_event *, event); +#endif + +int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event) +{ +#ifdef __NR_epoll_ctl + return (__syscall_epoll_ctl(epfd, op, fd, event)); +#else + __set_errno(ENOSYS); + return -1; +#endif +} + +/* + * epoll_wait() + */ +#ifdef __NR_epoll_wait +#define __NR___syscall_epoll_wait __NR_epoll_wait +static inline _syscall4(int, __syscall_epoll_wait, int, epfd, struct epoll_event *, events, int, maxevents, int, timeout); +#endif + +int epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout) +{ +#ifdef __NR_epoll_wait + return (__syscall_epoll_wait(epfd, events, maxevents, timeout)); +#else + __set_errno(ENOSYS); + return -1; +#endif +} |