ref: 7dc87d28e166fe2989e002fa650d2a345cf0461e
parent: fbafcadef80bcb3f2ecdd7c6162c2eea5b3ed8b4
author: Ayaka Koshibe <ayaka@onlab.us>
date: Wed Dec 7 19:20:17 EST 2016
OS X signal bits
--- a/lib/sys/sys+osx-x64.myr
+++ b/lib/sys/sys+osx-x64.myr
@@ -16,6 +16,8 @@
type whence = int64
type fcntlcmd = int64
type machport = int32
+ type signo = int32
+ type sigflags = int32
type fdset = struct
bits : int32[1024/4]
@@ -41,6 +43,14 @@
`Clockmonotonic
;;
+ type sigset = uint32
+
+ type sigaction = struct
+ handler : byte# /* code pointer */
+ mask : sigset
+ flags : sigflags
+ ;;
+
type waitstatus = union
`Waitexit int32
`Waitsig int32
@@ -331,6 +341,49 @@
/* return value for a failed mapping */
const Mapbad : byte# = (-1 : byte#)
+ /* signal actions */
+ const Saonstack : sigflags = 0x0001 /* take signal on signal stack */
+ const Sarestart : sigflags = 0x0002 /* restart system on signal return */
+ const Saresethand : sigflags = 0x0004 /* reset to SIG_DFL when taking signal */
+ const Sanocldstop : sigflags = 0x0008 /* do not generate SIGCHLD on child stop */
+ const Sanodefer : sigflags = 0x0010 /* don't mask the signal we're delivering */
+ const Sanocldwait : sigflags = 0x0020 /* don't keep zombies around */
+ const Sasiginfo : sigflags = 0x0040 /* signal handler with SA_SIGINFO args */
+
+ /* signals */
+ const Sighup : signo = 1 /* hangup */
+ const Sigint : signo = 2 /* interrupt */
+ const Sigquit : signo = 3 /* quit */
+ const Sigill : signo = 4 /* illegal instruction (not reset when caught) */
+ const Sigtrap : signo = 5 /* trace trap (not reset when caught) */
+ const Sigabrt : signo = 6 /* abort() */
+ const Sigiot : signo = Sigabrt /* compatibility */
+ const Sigemt : signo = 7 /* EMT instruction */
+ const Sigfpe : signo = 8 /* floating point exception */
+ const Sigkill : signo = 9 /* kill (cannot be caught or ignored) */
+ const Sigbus : signo = 10 /* bus error */
+ const Sigsegv : signo = 11 /* segmentation violation */
+ const Sigsys : signo = 12 /* bad argument to system call */
+ const Sigpipe : signo = 13 /* write on a pipe with no one to read it */
+ const Sigalrm : signo = 14 /* alarm clock */
+ const Sigterm : signo = 15 /* software termination signal from kill */
+ const Sigurg : signo = 16 /* urgent condition on IO channel */
+ const Sigstop : signo = 17 /* sendable stop signal not from tty */
+ const Sigtstp : signo = 18 /* stop signal from tty */
+ const Sigcont : signo = 19 /* continue a stopped process */
+ const Sigchld : signo = 20 /* to parent on child stop or exit */
+ const Sigttin : signo = 21 /* to readers pgrp upon background tty read */
+ const Sigttou : signo = 22 /* like TTIN for output if (tp->t_local<OSTOP) */
+ const Sigio : signo = 23 /* input/output possible signal */
+ const Sigxcpu : signo = 24 /* exceeded CPU time limit */
+ const Sigxfsz : signo = 25 /* exceeded file size limit */
+ const Sigvtalrm : signo = 26 /* virtual time alarm */
+ const Sigprof : signo = 27 /* profiling time alarm */
+ const Sigwinch : signo = 28 /* window size changes */
+ const Siginfo : signo = 29 /* information request */
+ const Sigusr1 : signo = 30 /* user defined signal 1 */
+ const Sigusr2 : signo = 31 /* user defined signal 2 */
+
/* syscalls.
note, creat() implemented as open(path, Creat|Trunc|Wronly) */
const Syssyscall : scno = 0x2000000
@@ -716,6 +769,10 @@
const getdirentries64 : (fd : fd, buf : byte[:], basep : int64# -> int64)
const chdir : (p : byte[:] -> int64)
+ /* signals */
+ const sigaction : (sig : signo, act : sigaction#, oact : sigaction# -> int)
+ const sigprocmask : (how : int32, set : sigset#, oset : sigset# -> int)
+
/* fd stuff */
const pipe : (fd : fd[2]# -> int64)
const dup : (fd : fd -> fd)
@@ -878,6 +935,10 @@
generic ioctl = {fd, req, arg; -> (syscall(Sysioctl, a(fd), a(req), a(arg)) : int64)} const getdirentries64 = {fd, buf, basep; -> syscall(Sysgetdirentries64, a(fd), (buf : byte#), a(buf.len), a(basep))} const chdir = {dir; -> syscall(Syschdir, cstring(dir))}+
+/* signals */
+const sigaction = {sig, act, oact; -> (syscall(Syssigaction, a(sig), a(act), a(oact)) : int)}+const sigprocmask = {sig, act, oact; -> (syscall(Syssigprocmask, a(sig), a(act), a(oact)) : int)}/* fd stuff */
const pipe = {fd; -> __osx_pipe(fd)}