check-flushvol-args-20001202

check args for flushvol

diff --git a/src/afs/afs_pioctl.c b/src/afs/afs_pioctl.c
index ef73203..fe5c9b5 100644 (file)
--- a/src/afs/afs_pioctl.c
+++ b/src/afs/afs_pioctl.c
@@ -2421,6 +2421,8 @@ struct AFS_UCRED *acred;
     afs_int32 cell, volume;
 
     AFS_STATCNT(PFlushVolumeData);
+    if (!avc)
+       return EINVAL;
     if ( !afs_resourceinit_flag )      /* afs deamons havn't started yet */
        return EIO;          /* Inappropriate ioctl for device */