kore

commit 4ecd6d5603dd6803c206ed28f27616c41bf35ea7
parent 7b48959c32f6194b28edf28b20be6f625aedafea
Author: Joris Vink <joris@coders.se>
Date:   Wed,  4 Jan 2023 11:48:19 +0100

Add kore_platform_random_uint32().

Diffstat:
include/kore/kore.h
 | 
1
+
src/bsd.c
 | 
6
++++++
src/linux.c
 | 
16
++++++++++++++++

3 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/include/kore/kore.h b/include/kore/kore.h
@@ -803,6 +803,7 @@ void		kore_platform_schedule_read(int, void *);
 void		kore_platform_schedule_write(int, void *);
 void		kore_platform_event_schedule(int, int, int, void *);
 void		kore_platform_worker_setcpu(struct kore_worker *);
+u_int32_t	kore_platform_random_uint32(void);
 
 #if defined(KORE_USE_PLATFORM_SENDFILE)
 int		kore_platform_sendfile(struct connection *, struct netbuf *);
diff --git a/src/bsd.c b/src/bsd.c
@@ -298,6 +298,12 @@ kore_platform_sandbox(void)
 #endif
 }
 
+u_int32_t
+kore_platform_random_uint32(void)
+{
+	return (arc4random());
+}
+
 #if defined(KORE_USE_PLATFORM_PLEDGE)
 void
 kore_platform_pledge(void)
diff --git a/src/linux.c b/src/linux.c
@@ -15,6 +15,7 @@
  */
 
 #include <sys/param.h>
+#include <sys/random.h>
 #include <sys/epoll.h>
 #include <sys/sendfile.h>
 #include <sys/syscall.h>
@@ -262,3 +263,18 @@ kore_platform_sandbox(void)
 {
 	kore_seccomp_enable();
 }
+
+u_int32_t
+kore_platform_random_uint32(void)
+{
+	ssize_t		ret;
+	u_int32_t	val;
+
+	if ((ret = getrandom(&val, sizeof(val), 0)) == -1)
+		fatalx("getrandom(): %s", errno_s);
+
+	if ((size_t)ret != sizeof(val))
+		fatalx("getrandom() %zd != %zu", ret, sizeof(val));
+
+	return (val);
+}