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Commit d6a3408a authored by Ilya Dryomov's avatar Ilya Dryomov
Browse files

libceph: supported_features module parameter 



Add a readonly, exported to sysfs module parameter so that userspace
can generate meaningful error messages.  It's a bit funky, but there is
no other libceph-specific place.

Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent 74da4a0f

net/ceph/ceph_common.c

+11 −0
Original line number Diff line number Diff line
@@ -45,6 +45,17 @@ bool libceph_compatible(void *data) 
}

EXPORT_SYMBOL(libceph_compatible);



static int param_get_supported_features(char *buffer,

					const struct kernel_param *kp)

{

	return sprintf(buffer, "0x%llx", CEPH_FEATURES_SUPPORTED_DEFAULT);

}

static const struct kernel_param_ops param_ops_supported_features = {

	.get = param_get_supported_features,

};

module_param_cb(supported_features, &param_ops_supported_features, NULL,

		S_IRUGO);



/*

 * find filename portion of a path (/foo/bar/baz -> baz)

 */