Re: [PATCH 1/2] mount.nfs: silently fails with bad version arguments

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On 06/ 2/10 09:41 AM, Steve Dickson wrote:
mount.nfs should not only fail when an invalid protocol
option is used (as it does), it should also print a
diagnostic identifying the problem.

Signed-off-by: Steve Dickson<steved@xxxxxxxxxx>
---
  utils/mount/network.c |    4 ++++
  1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/utils/mount/network.c b/utils/mount/network.c
index c541257..de1014d 100644
--- a/utils/mount/network.c
+++ b/utils/mount/network.c
@@ -1254,6 +1254,8 @@ nfs_nfs_version(struct mount_options *options, unsigned long *version)
  			nfs_error(_("%s: option parsing error\n"),
  					progname);

Watch out for case fall-through.  You need to add:

			return 0;

here.

  		case PO_BAD_VALUE:
+			nfs_error(_("%s: invalid value for 'vers=' option"),
+					progname);
  			return 0;
  		}
  	case 4: /* nfsvers */
@@ -1268,6 +1270,8 @@ nfs_nfs_version(struct mount_options *options, unsigned long *version)
  			nfs_error(_("%s: option parsing error\n"),
  					progname);

Case fall-through here as well.

  		case PO_BAD_VALUE:
+			nfs_error(_("%s: invalid value for 'nfsvers=' option"),
+					progname);

Why wouldn't you also print a diagnostic if a numeric value was used, but the value was out of range?

And, what about similar cases in nfs_nfs_port(), nfs_nfs_program(), nfs_mount_program(), nfs_mount_version(), and nfs_mount_port() ?

  			return 0;
  		}
  	}

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