Fill in Plat_IsInDebugSession() for FreeBSD

Author: brad0

src/tier0/dbg.cpp

@@ -37,6 +37,12 @@ using namespace SteamNetworkingSocketsLib;
 #include <sys/sysctl.h>
 #endif
 
+#if IsFreeBSD()
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <sys/user.h>
+#endif
+
 #if IsPlaystation() && defined(_DEBUG)
 // NDA material
 #endif
@@ -57,6 +63,18 @@ bool Plat_IsInDebugSession()
 	info.kp_proc.p_flag = 0;
 	sysctl(mib,4,&info,&size,NULL,0);
 	return ((info.kp_proc.p_flag & P_TRACED) == P_TRACED);
+#elif IsFreeBSD()
+	int mib[4];
+	struct kinfo_proc info;
+	size_t size;
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_PROC;
+	mib[2] = KERN_PROC_PID;
+	mib[3] = getpid();
+	size = sizeof(info);
+	if (sysctl(mib, 4, &info, &size, NULL, 0) == -1)
+	    return false;
+	return ((info.ki_flag & P_TRACED) != 0);
 #elif IsLinux()
 	static FILE *fp;
 	if ( !fp )