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nfsd: ignore requests to disable unsupported versions

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[ Upstream commit 8e823bafff ]

The kernel currently errors out if you attempt to enable or disable a
version that it doesn't recognize. Change it to ignore attempts to
disable an unrecognized version. If we don't support it, then there is
no harm in doing so.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Tom Talpey <tom@talpey.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jeff Layton
2022-10-18 07:47:54 -04:00
committed by Greg Kroah-Hartman
parent 0a49efb948
commit bfef0cfab4
1 changed files with 3 additions and 1 deletions
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4
fs/nfsd/nfsctl.c
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@@ -601,7 +601,9 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
} }
break; break;
default: default:
return -EINVAL; /* Ignore requests to disable non-existent versions */
if (cmd == NFSD_SET)
return -EINVAL;
} }
vers += len + 1; vers += len + 1;
} while ((len = qword_get(&mesg, vers, size)) > 0); } while ((len = qword_get(&mesg, vers, size)) > 0);