svn commit: r316692 - head/sys/fs/nfs

[Rick Macklem]

Author: rmacklem
Date: Mon Apr 10 21:49:35 2017
New Revision: 316692
URL: https://svnweb.freebsd.org/changeset/base/316692

Log:
  Set initial values for nfsstatfs in the NFSv4 client.
  
  The AmazonEFS NFSv4.1 server does not support the FILES_FREE and FILES_TOTAL
  attributes. As such, an NFSv4.1 mount to the server would return garbage
  for these values. This patch initializes the fields of the nfsstatfs structure,
  so that "df" and friends will at least return consistent bogus values.
  This patch should have effect when mounting other NFSv4.1 servers.
  
  Reported by:	cperciva
  MFC after:	2 weeks

Modified:
  head/sys/fs/nfs/nfs_commonsubs.c

Modified: head/sys/fs/nfs/nfs_commonsubs.c
==============================================================================
--- head/sys/fs/nfs/nfs_commonsubs.c	Mon Apr 10 21:44:13 2017	(r316691)
+++ head/sys/fs/nfs/nfs_commonsubs.c	Mon Apr 10 21:49:35 2017	(r316692)
@@ -888,6 +888,14 @@ nfsv4_loadattr(struct nfsrv_descript *nd
 			pc->pc_caseinsensitive = 0;
 			pc->pc_casepreserving = 1;
 		}
+		if (sfp != NULL) {
+			sfp->sf_ffiles = UINT64_MAX;
+			sfp->sf_tfiles = UINT64_MAX;
+			sfp->sf_afiles = UINT64_MAX;
+			sfp->sf_fbytes = UINT64_MAX;
+			sfp->sf_tbytes = UINT64_MAX;
+			sfp->sf_abytes = UINT64_MAX;
+		}
 	}
 
 	/*