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auth: Create XDG_RUNTIME_DIR if /run/user/UID exists

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Signed-off-by: AnErrupTion <anerruption@disroot.org>
This commit is contained in:
AnErrupTion
2026-06-18 20:16:25 +02:00
parent e138563874
commit e833c4bc1d
1 changed files with 15 additions and 13 deletions
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20
src/auth.zig
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@@ -179,7 +179,7 @@ fn startSession(
// Reset the XDG environment variables
try log_file.info(io, "auth/env", "resetting xdg environment variables", .{});
try setXdgEnv(allocator, tty_str, current_environment);
try setXdgRuntimeDir(allocator);
try setXdgRuntimeDir(allocator, io);
// Set the PAM variables
const pam_env_vars: ?[*:null]?[*:0]u8 = interop.pam.pam_getenvlist(handle);
@@ -247,19 +247,21 @@ fn setXdgEnv(allocator: std.mem.Allocator, tty_str: []u8, environment: Environme
try interop.setEnvironmentVariable(allocator, "XDG_VTNR", tty_str, false);
}
fn setXdgRuntimeDir(allocator: std.mem.Allocator) !void {
// The "/run/user/%d" directory is not available on FreeBSD. It is much
// better to stick to the defaults and let applications using
// XDG_RUNTIME_DIR to fall back to directories inside user's home
// directory.
if (builtin.os.tag != .freebsd) {
fn setXdgRuntimeDir(allocator: std.mem.Allocator, io: std.Io) !void {
// The "/run/user/%d" directory is not available on some operating systems,
// like FreeBSD and Alpine
const uid = std.posix.system.getuid();
var uid_buffer: [32]u8 = undefined; // No UID can be larger than this
const uid_str = try std.fmt.bufPrint(&uid_buffer, "/run/user/{d}", .{uid});
var xdg_dir = std.Io.Dir.openDirAbsolute(io, uid_str, .{}) catch |err| {
if (err == error.FileNotFound) return;
return err;
};
xdg_dir.close(io);
try interop.setEnvironmentVariable(allocator, "XDG_RUNTIME_DIR", uid_str, false);
}
}
fn loginConv(
num_msg: c_int,
@@ -390,7 +392,7 @@ fn createXauthFile(log_file: *LogFile, io: std.Io, pwd: []const u8, buffer: []u8
const xauthority: []u8 = try std.fmt.bufPrint(buffer, "{s}/{s}", .{ trimmed_xauth_dir, xauth_file });
std.Io.Dir.cwd().createDirPath(io, trimmed_xauth_dir) catch {};
try std.Io.Dir.cwd().createDirPath(io, trimmed_xauth_dir);
try log_file.info(io, "auth/x11", "creating xauth file: {s}", .{xauthority});