shithub: mc

Info  •  Files  •  Log  •  Branches

Implement signals on OpenBSD

--- a/lib/sys/sys+openbsd-x64.myr

+++ b/lib/sys/sys+openbsd-x64.myr

@@ -15,7 +15,8 @@

 	type filemode	= uint32

 	type filetype	= uint8

 	type fcntlcmd	= int64

-	type umtxop	= int32

+	type signo	= int32

+	type sigflags	= int32

 	type clock = union

 		`Clockrealtime

@@ -42,6 +43,14 @@

 		usec	: uint64

 	;;

+	type sigset = uint32

+

+	type sigaction = struct

+		handler	: byte#	/* code pointer */

+		mask	: sigset

+		flags	: sigflags

+	;;

+

 	type rusage = struct

 		utime	: timeval /* user time */

 		stime	: timeval /* system time */

@@ -255,6 +264,50 @@

 	/* return value for a failed mapping */

 	const Mapbad	: byte# = (-1 : byte#)

+	/* signal flags */

+	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 Sanodefer		: sigflags = 0x0010	/* don't mask the signal we're delivering */

+	const Sanocldwait	: sigflags = 0x0020	/* don't create zombies (assign to pid 1) */

+	const Sanocldstop	: sigflags = 0x0008	/* do not generate SIGCHLD on child stop */

+	const Sasiginfo		: sigflags = 0x0040	/* generate siginfo_t */

+

+	/* 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&LTOSTOP) */

+	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 */

+	const Sigthr	: signo = 32	/* thread library AST */

+

 	/* syscalls */

 	const Syssyscall : scno = 0

 	const Sysexit : scno = 1

@@ -498,6 +551,10 @@

 	const chdir	: (p : byte[:] -> int64)

 	const __getcwd	: (buf : 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	: (fds : fd[2]# -> int64)

 	const dup	: (fd : fd -> fd)

@@ -617,6 +674,10 @@

 const chdir	= {dir;	-> syscall(Syschdir, cstring(dir))}

 const __getcwd	= {buf;	-> syscall(Sys__getcwd, a(buf), a(buf.len))}

 const getdents	= {fd, buf;		-> (syscall(Sysgetdents, a(buf), a(buf.len)) : int64)}

+

+/* 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)}

 /* file stuff */

 const pipe	= {fds;	-> syscall(Syspipe, fds)}