HelenOS sources

SYS_KIO            60 kernel/generic/src/syscall/syscall.c 	[SYS_KIO] = (syshandler_t) sys_kio,
SYS_KIO            41 uspace/app/trace/syscalls.c 	[SYS_KIO] = { "kio", 3, V_INT_ERRNO },
SYS_KIO            83 uspace/lib/c/generic/io/kio.c 			__SYSCALL3(SYS_KIO, KIO_WRITE,
SYS_KIO           106 uspace/lib/c/generic/io/kio.c 	(void) __SYSCALL3(SYS_KIO, KIO_UPDATE, (uintptr_t) NULL, 0);
SYS_KIO           111 uspace/lib/c/generic/io/kio.c 	(void) __SYSCALL3(SYS_KIO, KIO_COMMAND, (sysarg_t) buf, (sysarg_t) size);