Source
pub const NAME_MAX = switch (native_os) {
.linux => linux.NAME_MAX,
.emscripten => emscripten.NAME_MAX,
// Haiku's headers make this 256, to contain room for the terminating null
// character, but POSIX definition says that NAME_MAX does not include the
// terminating null.
// https://github.com/SerenityOS/serenity/blob/c87557e9c1865fa1a6440de34ff6ce6fc858a2b7/Kernel/API/POSIX/sys/limits.h#L20
.haiku, .openbsd, .dragonfly, .netbsd, .solaris, .illumos, .freebsd, .macos, .ios, .tvos, .watchos, .visionos, .serenity => 255,
else => {},
}