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sunrpc: gss_pipe_downcall(), don't assume all errors are transient

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Instead of mapping all errors except EACCES to EAGAIN, map all errors
except EAGAIN to EACCES.

An example is user-land negotiating a Kerberos context with an encryption
type that is not supported by the kernel code.  (This can happen due to
mis-configuration or a bug in the Kerberos code that does not honor our
request to limit the encryption types negotiated.)  This failure is not
transient, and returning EAGAIN causes mount to continuously retry rather
than giving up.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Kevin Coffman 2007-11-09 18:42:04 -05:00 committed by Trond Myklebust
parent b09b9417d0
commit ffc40f5692
1 changed files with 1 additions and 1 deletions
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2
net/sunrpc/auth_gss/auth_gss.c
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@ -540,7 +540,7 @@ gss_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
p = gss_fill_context(p, end, ctx, gss_msg->auth->mech);
if (IS_ERR(p)) {
err = PTR_ERR(p);
gss_msg->msg.errno = (err == -EACCES) ? -EACCES : -EAGAIN;
gss_msg->msg.errno = (err == -EAGAIN) ? -EAGAIN : -EACCES;
goto err_release_msg;
}
gss_msg->ctx = gss_get_ctx(ctx);