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| author | J. Bruce Fields <bfields@redhat.com> | 2013-05-24 15:47:49 +0200 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2013-05-28 22:46:51 +0200 |
| commit | b161c144404c18f6a9e20e46b63828ae3c2eb093 (patch) | |
| tree | 5cad25054c2dfecfd83f8e2fbb2c6d1b52a44e04 /net/sunrpc | |
| parent | svcauth_gss: fix error code in use_gss_proxy() (diff) | |
| download | linux-b161c144404c18f6a9e20e46b63828ae3c2eb093.tar.xz linux-b161c144404c18f6a9e20e46b63828ae3c2eb093.zip | |
svcrpc: implement O_NONBLOCK behavior for use-gss-proxy
Somebody noticed LTP was complaining about O_NONBLOCK opens of
/proc/net/rpc/use-gss-proxy succeeding and then a following read
hanging.
I'm not convinced LTP really has any business opening random proc files
and expecting them to behave a certain way. Maybe this isn't really a
bug.
But in any case the O_NONBLOCK behavior could be useful for someone that
wants to test whether gss-proxy is up without waiting.
Reported-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/auth_gss/svcauth_gss.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index 2c6a1ece54bf..29b4ba93ab3c 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -1317,10 +1317,12 @@ static inline bool gssp_ready(struct sunrpc_net *sn) return false; } -static int wait_for_gss_proxy(struct net *net) +static int wait_for_gss_proxy(struct net *net, struct file *file) { struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); + if (file->f_flags & O_NONBLOCK && !gssp_ready(sn)) + return -EAGAIN; return wait_event_interruptible(sn->gssp_wq, gssp_ready(sn)); } @@ -1362,7 +1364,7 @@ static ssize_t read_gssp(struct file *file, char __user *buf, size_t len; int ret; - ret = wait_for_gss_proxy(net); + ret = wait_for_gss_proxy(net, file); if (ret) return ret; |