- freebsd: fix build

Go's "syscall" package file for FreeBSD (incorrectly?) uses int64
 types in syscall.Rlimit struct.

home/os_freebsd.go

@@ -0,0 +1,27 @@
+// +build freebsd
+
+package home
+
+import (
+	"os"
+	"syscall"
+
+	"github.com/AdguardTeam/golibs/log"
+)
+
+// Set user-specified limit of how many fd's we can use
+// https://github.com/AdguardTeam/AdGuardHome/issues/659
+func setRlimit(val uint) {
+	var rlim syscall.Rlimit
+	rlim.Max = int64(val)
+	rlim.Cur = int64(val)
+	err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlim)
+	if err != nil {
+		log.Error("Setrlimit() failed: %v", err)
+	}
+}
+
+// Check if the current user has root (administrator) rights
+func haveAdminRights() (bool, error) {
+	return os.Getuid() == 0, nil
+}

home/os_unix.go

@@ -1,4 +1,4 @@
-// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+// +build aix darwin dragonfly linux netbsd openbsd solaris
 
 package home