HelenOS sources

sys_ipc_event_unmask  104 kernel/generic/include/ipc/event.h extern sys_errno_t sys_ipc_event_unmask(sysarg_t);
sys_ipc_event_unmask  107 kernel/generic/src/syscall/syscall.c 	[SYS_IPC_EVENT_UNMASK] = (syshandler_t) sys_ipc_event_unmask,