[nfsacl v2 11/16] Solaris nfsacl workaround

[Andreas Gruenbacher]

If the nfs_acl program is available, Solaris clients expect both version
2 and version 3 to be available; RPC_PROG_MISMATCH leads to a mount
failure.  Fake RPC_PROG_UNAVAIL when asked for nfs_acl version 2.

Trond has rejected this patch. I'm not sure how to deal with it in a
truly clean way, so probably I won't care and still use this as a vendor
patch.

Signed-off-by: Andreas Gruenbacher <agruen@xxxxxxx>
Signed-off-by: Olaf Kirch <okir@xxxxxxx>

Index: linux-2.6.11-rc5/net/sunrpc/svc.c
===================================================================
--- linux-2.6.11-rc5.orig/net/sunrpc/svc.c
+++ linux-2.6.11-rc5/net/sunrpc/svc.c
@@ -455,6 +455,13 @@ err_bad_prog:
 	goto sendit;
 
 err_bad_vers:
+	if (prog == 100227 && vers == 2) {
+		/* If the nfs_acl program is available, Solaris clients expect
+		   both version 2 and version 3 to be available;
+		   RPC_PROG_MISMATCH leads to a mount failure. Fake
+		   RPC_PROG_UNAVAIL when asked for nfs_acl version 2. */
+		goto err_bad_prog;
+	}
 #ifdef RPC_PARANOIA
 	printk("svc: unknown version (%d)\n", vers);
 #endif

--
Andreas Gruenbacher <agruen@xxxxxxx>
SUSE Labs, SUSE LINUX PRODUCTS GMBH

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