nfsd: fix race in nfsd_nrthreads()

[safe/jmp/linux-2.6] / fs / nfsd / auth.c

diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c
index cf61dc8..294992e 100644 (file)
--- a/fs/nfsd/auth.c
+++ b/fs/nfsd/auth.c
@@ -9,10 +9,10 @@
 #include <linux/sunrpc/svc.h>
 #include <linux/sunrpc/svcauth.h>
 #include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/export.h>
+#include "auth.h"
 
-#define        CAP_NFSD_MASK (CAP_FS_MASK|CAP_TO_MASK(CAP_SYS_RESOURCE))
-
-static int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp)
+int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp)
 {
        struct exp_flavor_info *f;
        struct exp_flavor_info *end = exp->ex_flavors + exp->ex_nflavors;
@@ -68,10 +68,12 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
        ret = set_current_groups(cred.cr_group_info);
        put_group_info(cred.cr_group_info);
        if ((cred.cr_uid)) {
-               cap_t(current->cap_effective) &= ~CAP_NFSD_MASK;
+               current->cap_effective =
+                       cap_drop_nfsd_set(current->cap_effective);
        } else {
-               cap_t(current->cap_effective) |= (CAP_NFSD_MASK &
-                                                 current->cap_permitted);
+               current->cap_effective =
+                       cap_raise_nfsd_set(current->cap_effective,
+                                          current->cap_permitted);
        }
        return ret;
 }