From b611967de4dc5c52049676c4369dcac622a7cdfe Mon Sep 17 00:00:00 2001 From: Davide Libenzi Date: Wed, 11 Oct 2006 01:21:44 -0700 Subject: [PATCH] epoll_pwait() Implement the epoll_pwait system call, that extend the event wait mechanism with the same logic ppoll and pselect do. The definition of epoll_pwait is: int epoll_pwait(int epfd, struct epoll_event *events, int maxevents, int timeout, const sigset_t *sigmask, size_t sigsetsize); The difference between the vanilla epoll_wait and epoll_pwait is that the latter allows the caller to specify a signal mask to be set while waiting for events. Hence epoll_pwait will wait until either one monitored event, or an unmasked signal happen. If sigmask is NULL, the epoll_pwait system call will act exactly like epoll_wait. For the POSIX definition of pselect, information is available here: http://www.opengroup.org/onlinepubs/009695399/functions/select.html Signed-off-by: Davide Libenzi Cc: David Woodhouse Cc: Andi Kleen Cc: Michael Kerrisk Cc: Ulrich Drepper Cc: Roland McGrath Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-i386/unistd.h | 3 ++- include/linux/syscalls.h | 4 ++++ 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-i386/unistd.h b/include/asm-i386/unistd.h index 3ca7ab963d7d..beeeaf6b054a 100644 --- a/include/asm-i386/unistd.h +++ b/include/asm-i386/unistd.h @@ -324,10 +324,11 @@ #define __NR_vmsplice 316 #define __NR_move_pages 317 #define __NR_getcpu 318 +#define __NR_epoll_pwait 319 #ifdef __KERNEL__ -#define NR_syscalls 319 +#define NR_syscalls 320 #include /* diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index b0ace3fd7eb9..1912c6cbef55 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -431,6 +431,10 @@ asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, struct epoll_event __user *event); asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, int maxevents, int timeout); +asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, + int maxevents, int timeout, + const sigset_t __user *sigmask, + size_t sigsetsize); asmlinkage long sys_gethostname(char __user *name, int len); asmlinkage long sys_sethostname(char __user *name, int len); asmlinkage long sys_setdomainname(char __user *name, int len); -- cgit v1.2.2