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NFS client bugfixes for Linux 3.3 (pull 3)

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Merge tag 'nfs-for-3.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

NFS client bugfixes for Linux 3.3 (pull 3)

* tag 'nfs-for-3.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: Fix machine creds in generic_create_cred and generic_match
This commit is contained in:
Linus Torvalds 2012-01-30 08:47:49 -08:00
commit f94f72ee67
1 changed files with 16 additions and 1 deletions
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17
net/sunrpc/auth_generic.c
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@ -92,6 +92,7 @@ generic_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
if (gcred->acred.group_info != NULL)
get_group_info(gcred->acred.group_info);
gcred->acred.machine_cred = acred->machine_cred;
gcred->acred.principal = acred->principal;
dprintk("RPC: allocated %s cred %p for uid %d gid %d\n",
gcred->acred.machine_cred ? "machine" : "generic",
@ -123,6 +124,17 @@ generic_destroy_cred(struct rpc_cred *cred)
call_rcu(&cred->cr_rcu, generic_free_cred_callback);
}
static int
machine_cred_match(struct auth_cred *acred, struct generic_cred *gcred, int flags)
{
if (!gcred->acred.machine_cred ||
gcred->acred.principal != acred->principal ||
gcred->acred.uid != acred->uid ||
gcred->acred.gid != acred->gid)
return 0;
return 1;
}
/*
* Match credentials against current process creds.
*/
@ -132,9 +144,12 @@ generic_match(struct auth_cred *acred, struct rpc_cred *cred, int flags)
struct generic_cred *gcred = container_of(cred, struct generic_cred, gc_base);
int i;
if (acred->machine_cred)
return machine_cred_match(acred, gcred, flags);
if (gcred->acred.uid != acred->uid ||
gcred->acred.gid != acred->gid ||
gcred->acred.machine_cred != acred->machine_cred)
gcred->acred.machine_cred != 0)
goto out_nomatch;
/* Optimisation in the case where pointers are identical... */