On Mon, Mar 20, 2017 at 05:04:39PM -0700, Jun Wu wrote:
> # HG changeset patch
> # User Jun Wu <qu...@fb.com>
> # Date 1490052852 25200
> # Mon Mar 20 16:34:12 2017 -0700
> # Node ID c8693bc1191b3ac1af0a67e97068777b13cfa672
> # Parent f710d54d1985975d7d37aa58e9d5740ebdcf5b7b
> # Available At https://bitbucket.org/quark-zju/hg-draft
> # hg pull https://bitbucket.org/quark-zju/hg-draft -r
> c8693bc1191b
> osutil: export a "getfstype" method
Thank you for sticking with this - this looks like what I had hoped
the first round could be. The statfs method is exactly what we needed.
Queued the whole thing.
>
> This patch exports the "getfstype" method. So we can use it to enable
> hardlinks for known safe filesystems.
>
> The patch was tested manually via debugshell on a Linux system.
> "mercurial.osutil.getfstype" works as expected. It's hard to mount
> filesystem on user-space easily. I will add a test for real hardlink support
> to indirectly test this patch, after turning on real hardlinks support for
> certain whitelisted filesystems.
>
> diff --git a/mercurial/osutil.c b/mercurial/osutil.c
> --- a/mercurial/osutil.c
> +++ b/mercurial/osutil.c
> @@ -1080,4 +1080,18 @@ const char *getfstype(const char *path)
> return NULL;
> }
> +
> +static PyObject *pygetfstype(PyObject *self, PyObject *args)
> +{
> + const char *path = NULL;
> + if (!PyArg_ParseTuple(args, "s", &path))
> + return NULL;
> +
> + const char *type = getfstype(path);
> + if (type == NULL)
> + Py_RETURN_NONE;
> +
> + PyObject *result = Py_BuildValue("s", type);
> + return result;
> +}
> #endif /* def HAVE_STATFS */
>
> @@ -1258,4 +1272,8 @@ static PyMethodDef methods[] = {
> "set process title (best-effort)\n"},
> #endif
> +#ifdef HAVE_STATFS
> + {"getfstype", (PyCFunction)pygetfstype, METH_VARARGS,
> + "get filesystem type (best-effort)\n"},
> +#endif
> #endif /* ndef _WIN32 */
> #ifdef __APPLE__
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