From: Matthias Kruk <m@m10k.eu>
Date: Tue, 14 Jan 2020 11:27:24 +0000 (+0900)
Subject: Implement functions for manipulating sigset_t types in klibc
X-Git-Url: https://git.corax.cc/?a=commitdiff_plain;h=3a164ff652f52bda737c17c00e79bbbd8af742c3;p=corax

Implement functions for manipulating sigset_t types in klibc
 - sigemptyset()
 - sigfillset()
 - sigaddset()
 - sigdelset()
 - sigismember()
---

diff --git a/kernel/klibc/Makefile b/kernel/klibc/Makefile
index c18bc92..f029acd 100644
--- a/kernel/klibc/Makefile
+++ b/kernel/klibc/Makefile
@@ -1,5 +1,5 @@
 OUTPUT = klibc.a
-OBJECTS = string.o spinlock.o mutex.o posixcall.o coraxcall.o heap.o stdio.o
+OBJECTS = string.o spinlock.o mutex.o posixcall.o coraxcall.o heap.o stdio.o signal.o
 PHONY = clean
 INCLUDES = -I../include -I../../include -I../..
 CFLAGS = -m32 -Wall -nostdlib -nodefaultlibs -nostartfiles -ffreestanding $(INCLUDES)
diff --git a/kernel/klibc/signal.c b/kernel/klibc/signal.c
new file mode 100644
index 0000000..07891fa
--- /dev/null
+++ b/kernel/klibc/signal.c
@@ -0,0 +1,77 @@
+#include <corax/errno.h>
+#include <signal.h>
+#include <string.h>
+
+/* FIXME: Update errno so that callers can tell what went wrong */
+
+#define __SIGIDX(i) ((i) / (sizeof(((sigset_t*)0)->val[0]) * 8))
+#define __SIGBIT(i) ((i) & ((sizeof(((sigset_t*)0)->val[0]) * 8) - 1))
+
+int sigemptyset(sigset_t *set)
+{
+	int error;
+
+	error = EINVAL;
+
+	if(set) {
+		memset(set, 0, sizeof(*set));
+		error = 0;
+	}
+
+	return(error ? -1 : 0);
+}
+
+int sigfillset(sigset_t *set)
+{
+	int error;
+
+	error = EINVAL;
+
+	if(set) {
+		memset(set, 0xff, sizeof(*set));
+		error = 0;
+	}
+
+	return(error ? -1 : 0);
+}
+
+int sigaddset(sigset_t *set, int sig)
+{
+	int error;
+
+	error = EINVAL;
+
+	if(set) {
+		set->val[__SIGIDX(sig)] |= (1 << __SIGBIT(sig));
+		error = 0;
+	}
+
+	return(error ? -1 : 0);
+}
+
+int sigdelset(sigset_t *set, int sig)
+{
+	int error;
+
+	error = EINVAL;
+
+	if(set) {
+		set->val[__SIGIDX(sig)] &= ~(1 << __SIGBIT(sig));
+		error = 0;
+	}
+
+	return(error ? -1 : 0);
+}
+
+int sigismember(const sigset_t *set, int sig)
+{
+	int ret_val;
+
+	ret_val = -1;
+
+	if(set) {
+		ret_val = set->val[__SIGIDX(sig)] & (1 << __SIGBIT(sig)) ? 1 : 0;
+	}
+
+	return(ret_val);
+}