knfsd: nfs4 name->id mapping not correctly parsing negative downcall

[linux-2.6-omap-h63xx.git] / fs / nfsd / nfssvc.c

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index d7759ce6ed94a64ac260da20e2fe8fde94d1e618..ef46f3228330f973f56e3874bcea9a7937084566 100644 (file)
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -9,7 +9,7 @@
  */
 
 #include <linux/module.h>
-
+#include <linux/sched.h>
 #include <linux/time.h>
 #include <linux/errno.h>
 #include <linux/nfs.h>
@@ -19,6 +19,7 @@
 #include <linux/slab.h>
 #include <linux/smp.h>
 #include <linux/smp_lock.h>
+#include <linux/freezer.h>
 #include <linux/fs_struct.h>
 
 #include <linux/sunrpc/types.h>
@@ -432,6 +433,7 @@ nfsd(struct svc_rqst *rqstp)
         * dirty pages.
         */
        current->flags |= PF_LESS_THROTTLE;
+       set_freezable();
 
        /*
         * The main request loop
@@ -492,6 +494,15 @@ out:
        module_put_and_exit(0);
 }
 
+static __be32 map_new_errors(u32 vers, __be32 nfserr)
+{
+       if (nfserr == nfserr_jukebox && vers == 2)
+               return nfserr_dropit;
+       if (nfserr == nfserr_wrongsec && vers < 4)
+               return nfserr_acces;
+       return nfserr;
+}
+
 int
 nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
 {
@@ -534,10 +545,9 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
 
        /* Now call the procedure handler, and encode NFS status. */
        nfserr = proc->pc_func(rqstp, rqstp->rq_argp, rqstp->rq_resp);
-       if (nfserr == nfserr_jukebox && rqstp->rq_vers == 2)
-               nfserr = nfserr_dropit;
+       nfserr = map_new_errors(rqstp->rq_vers, nfserr);
        if (nfserr == nfserr_dropit) {
-               dprintk("nfsd: Dropping request due to malloc failure!\n");
+               dprintk("nfsd: Dropping request; may be revisited later\n");
                nfsd_cache_update(rqstp, RC_NOCACHE, NULL);
                return 0;
        }