Returns a handle to the current working directory.
It is not opened with iteration capability. Iterating over the result is illegal behavior.
Closing the returned Dir is checked illegal behavior.
On POSIX targets, this function is comptime-callable.
This function is overridable via std.Options.cwd.
pub fn cwd() Dir
pub fn cwd() Dir {
const cwdFn = std.Options.cwd orelse return switch (native_os) {
.windows => .{ .handle = std.os.windows.peb().ProcessParameters.CurrentDirectory.Handle },
.wasi => .{ .handle = 3 }, // Expect the first preopen to be current working directory.
else => .{ .handle = std.posix.AT.FDCWD },
};
return cwdFn();
}