vala Posix.lstat() error

Question

I've got this piece of code:

using Posix;

int fuseguifs_getattr(string path, Posix.Stat *stbuf)
{
    int res;
    res = Posix.lstat(path, stbuf);
    if (res == -1)
        return -Posix.errno;

    return 0;
}

static int main(string [] args)
{
    Posix.Stat *a;
    fuseguifs_getattr("/home/leon", a);
    return 0;
}

When I'm trying to compile it I get this error:

test.vala:6.26-6.30: error: Argument 2: Cannot convert from
`Posix.Stat' to `Posix.Stat*'
    res = Posix.lstat(path, stbuf);
                            ^^^^^
Compilation failed: 1 error(s), 0 warning(s)

I've tried changing this: fuseguifs_getattr("/home/leon", a); to fuseguifs_getattr("/home/leon", *a);

But then I get an error: "Cannot pass value to reference or output parameter"

I've tried adding "out": res = Posix.lstat(path, out *stbuf);

That gives this error: error: ref and out method arguments can only be used with fields, parameters, local variables, and array element access

I can't change the fuseguifs_getattr method parameters because that's part of how the fuse bindings expect it.

I'm really stuck. Does anyone how I can solve this?

Answer 1

This seems to solve it:

int fuseguifs_getattr(string path, Posix.Stat *stbuf)
{
    int res;
    Posix.Stat a;
    res = Posix.lstat(path, stbuf);

    if (res == -1) {
        return -Posix.errno;
    }
    *stbuf = a;

    return 0;
}

Would that be the right way to go?