From 7334cfc680d557f2385c98d1b2a4f114955d5049 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Thu, 6 Jan 2005 03:06:49 +0000 Subject: Justin Cormack writes: Here is a small patch to add epoll support to uclibc. The only thing I am not sure about is what needs to be done (if anything) to make it work on 2.4/2.2 kernels (are the syscall numbers defined but give errors when called or not?). Tested on 2.6, though some other issues prevent more extensive testing at the minute. Mike Frysinger: cleaned up patch and added checks to make sure that the syscall actually exists, returning ENOSYS in cases where it doesn't. --- libc/sysdeps/linux/common/Makefile | 2 +- libc/sysdeps/linux/common/epoll.c | 65 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+), 1 deletion(-) create mode 100644 libc/sysdeps/linux/common/epoll.c (limited to 'libc/sysdeps/linux/common') 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 + * + * GNU Library General Public License (LGPL) version 2 or later. + */ + +#include "syscalls.h" +#include + +/* + * 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 +} -- cgit v1.2.3