Commit 54e2c2c1 authored by David Howells's avatar David Howells

KEYS: Reinstate EPERM for a key type name beginning with a '.'

Reinstate the generation of EPERM for a key type name beginning with a '.' in
a userspace call.  Types whose name begins with a '.' are internal only.

The test was removed by:

	commit a4e3b8d7
	Author: Mimi Zohar <zohar@linux.vnet.ibm.com>
	Date:   Thu May 22 14:02:23 2014 -0400
	Subject: KEYS: special dot prefixed keyring name bug fix

I think we want to keep the restriction on type name so that userspace can't
add keys of a special internal type.

Note that removal of the test causes several of the tests in the keyutils
testsuite to fail.
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Acked-by: default avatarVivek Goyal <vgoyal@redhat.com>
cc: Mimi Zohar <zohar@linux.vnet.ibm.com>
parent 478d0855
...@@ -37,6 +37,8 @@ static int key_get_type_from_user(char *type, ...@@ -37,6 +37,8 @@ static int key_get_type_from_user(char *type,
return ret; return ret;
if (ret == 0 || ret >= len) if (ret == 0 || ret >= len)
return -EINVAL; return -EINVAL;
if (type[0] == '.')
return -EPERM;
type[len - 1] = '\0'; type[len - 1] = '\0';
return 0; return 0;
} }
......
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