diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index acf31d184524986051dd169ccbb943d90f71c2a7..43a6226cd0bb4d47b945e06c108fa2246de3b8a0 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -3350,7 +3350,9 @@ pub const Sigaction = extern struct {
     restorer: ?*const fn () callconv(.C) void = null,
 };
 
-pub const empty_sigset = [_]u32{0} ** @typeInfo(sigset_t).Array.len;
+const sigset_len = @typeInfo(sigset_t).Array.len;
+pub const empty_sigset = [_]u32{0} ** sigset_len;
+pub const filled_sigset = [_]u32{(1 << (31 & (usize_bits - 1))) - 1} ++ [_]u32{0} ** (sigset_len - 1);
 
 pub const SFD = struct {
     pub const CLOEXEC = O.CLOEXEC;