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This is an example of documentation generated by ZigDoc, an alternative to Zig's built-in Auto Doc feature. See also examples in other modes/formats. The project being documented here (as the example) is the Zig standard library. Private Function

dirRealPathFile

Doc Source

Private Function

std.Io.Uring.dirRealPathFile

fn dirRealPathFile(
    userdata: ?*anyopaque,
    dir: Dir,
    sub_path: []const u8,
    out_buffer: []u8,
) Dir.RealPathFileError!usize

Params

userdata: ?*anyopaque
dir: Dir
sub_path: []const u8
out_buffer: []u8

File

Io/Uring.zig:3167

fn dirRealPathFile(
    userdata: ?*anyopaque,
    dir: Dir,
    sub_path: []const u8,
    out_buffer: []u8,
) Dir.RealPathFileError!usize {
    const ev: *Evented = @ptrCast(@alignCast(userdata));

    var path_buffer: [PATH_MAX]u8 = undefined;
    const sub_path_posix = try pathToPosix(sub_path, &path_buffer);

    var maybe_sync: CancelRegion.Sync.Maybe = .{ .cancel_region = .init() };
    defer maybe_sync.deinit(ev);
    const fd = ev.openat(&maybe_sync.cancel_region, dir.handle, sub_path_posix, .{
        .CLOEXEC = true,
        .PATH = true,
    }, 0) catch |err| switch (err) {
        error.WouldBlock => return errnoBug(.AGAIN),
        error.OperationUnsupported => return errnoBug(.OPNOTSUPP), // Not asking for locks.
        error.ReadOnlyFileSystem => return errnoBug(.ROFS), // Not creating.
        else => |e| return e,
    };
    defer ev.closeAsync(fd);
    return ev.realPath(try maybe_sync.enterSync(ev), fd, out_buffer);
}