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Fix fallback UID range + add error if UID range not found

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Signed-off-by: AnErrupTion <anerruption@disroot.org>
This commit is contained in:
AnErrupTion
2025-11-30 23:36:47 +01:00
parent e29bda3250
commit c2b3d794e8
2 changed files with 7 additions and 2 deletions
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4
build.zig
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@@ -44,8 +44,8 @@ pub fn build(b: *std.Build) !void {
const enable_x11_support = b.option(bool, "enable_x11_support", "Enable X11 support (default is on)") orelse true;
const default_tty = b.option(u8, "default_tty", "Set the TTY (default is 2)") orelse 2;
const fallback_tty = b.option(u8, "fallback_tty", "Set the fallback TTY (default is 2). This value gets embedded into the binary") orelse 2;
const fallback_uid_min = b.option(std.posix.uid_t, "fallback_uid_min", "Set the fallback minimum UID (default is 1000). This value gets embedded into the binary") orelse 2;
const fallback_uid_max = b.option(std.posix.uid_t, "fallback_uid_max", "Set the fallback maximum UID (default is 60000). This value gets embedded into the binary") orelse 2;
const fallback_uid_min = b.option(std.posix.uid_t, "fallback_uid_min", "Set the fallback minimum UID (default is 1000). This value gets embedded into the binary") orelse 1000;
const fallback_uid_max = b.option(std.posix.uid_t, "fallback_uid_max", "Set the fallback maximum UID (default is 60000). This value gets embedded into the binary") orelse 60000;
default_tty_str = try std.fmt.allocPrint(b.allocator, "{d}", .{default_tty});

5
src/interop.zig
View File

@@ -171,17 +171,22 @@ fn PlatformStruct() type {
var iterator = std.mem.splitScalar(u8, login_defs_buffer, '\n');
var uid_range = UidRange{};
var nameFound = false;
while (iterator.next()) |line| {
const trimmed_line = std.mem.trim(u8, line, " \n\r\t");
if (std.mem.startsWith(u8, trimmed_line, "UID_MIN")) {
uid_range.uid_min = try parseValue(std.posix.uid_t, "UID_MIN", trimmed_line);
nameFound = true;
} else if (std.mem.startsWith(u8, trimmed_line, "UID_MAX")) {
uid_range.uid_max = try parseValue(std.posix.uid_t, "UID_MAX", trimmed_line);
nameFound = true;
}
}
if (!nameFound) return error.UidNameNotFound;
// This code assumes the OS has a login.defs file with UID_MIN
// and UID_MAX values defined in it, which should be the case
// for most systemd-based Linux distributions out there.