hare

commit 6ecfa4adb97113e5264df6c93abc3a4ece4ebcda
parent 7fa956a2d5f377d7a7389bdb47031478b03a67cb
Author: Mykyta Holubakha <hilobakho@gmail.com>
Date:   Sat, 13 Mar 2021 18:32:56 +0200

rt: add sigset and implement sigsetops

Diffstat:
A
rt/+linux/signal.ha
 | 
44
++++++++++++++++++++++++++++++++++++++++++++
M
rt/+linux/types.ha
 | 
4
++++

2 files changed, 48 insertions(+), 0 deletions(-)
diff --git a/rt/+linux/signal.ha b/rt/+linux/signal.ha
@@ -0,0 +1,44 @@
+// TODO: work when _NSIG != 64
+
+export fn sigemptyset(set: *sigset) int = {
+	if (set.__val[0] == 0) {
+		return 1;
+	};
+	set.__val[0] = 0;
+	return 0;
+};
+
+export fn sigaddset(set: *sigset, signum: int) (int | errno) = {
+	if (signum > NSIG) {
+		return EINVAL;
+	};
+	signum -= 1;
+	set.__val[0] |= (1 << signum): u64;
+	return 0;
+};
+
+export fn sigdelset(set: *sigset, signum: int) (int | errno) = {
+	if (signum > NSIG) {
+		return EINVAL;
+	};
+	signum -= 1;
+	set.__val[0] &= ~(1 << signum: u64);
+	return 0;
+};
+
+export fn sigismember(set: *sigset, signum: int) (int | errno) = {
+	if (signum > NSIG) {
+		return EINVAL;
+	};
+	signum -= 1;
+	if ((set.__val[0] & (1 << signum: u64)) != 0) {
+		return 1;
+	} else {
+		return 0;
+	};
+};
+
+export fn sigfillset(set: *sigset) (int | errno) = {
+	set.__val[0] = 0xffffffffffffffff: u64;
+	return 0;
+};
diff --git a/rt/+linux/types.ha b/rt/+linux/types.ha
@@ -9,6 +9,10 @@ export type time_t = i64;
 export type suseconds_t = i64;
 export type nfds_t = u64;
 
+export type sigset = struct {
+	__val: [1]u64,
+};
+
 export type timeval = struct {
 	tv_sec:  time_t,
 	tv_usec: suseconds_t,