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sunrpc: Properly encode kuids and kgids in RPC_AUTH_UNIX credentials

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When writing kuids onto the wire first map them into the initial user
namespace.

When writing kgids onto the wire first map them into the initial user
namespace.

Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2013-02-02 02:45:08 -08:00
parent 9e469e30d7
commit a570abbb96
1 changed files with 3 additions and 3 deletions
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6
net/sunrpc/auth_unix.c
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@ -157,11 +157,11 @@ unx_marshal(struct rpc_task *task, __be32 *p)
*/
p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
*p++ = htonl((u32) cred->uc_uid);
*p++ = htonl((u32) cred->uc_gid);
*p++ = htonl((u32) from_kuid(&init_user_ns, cred->uc_uid));
*p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gid));
hold = p++;
for (i = 0; i < 16 && gid_valid(cred->uc_gids[i]); i++)
*p++ = htonl((u32) cred->uc_gids[i]);
*p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gids[i]));
*hold = htonl(p - hold - 1); /* gid array length */
*base = htonl((p - base - 1) << 2); /* cred length */