diff options
Diffstat (limited to 'kernels/linux-libre-knock/sunrpc-replace-gssd_running-with-more-reliable-check.patch')
| -rw-r--r-- | kernels/linux-libre-knock/sunrpc-replace-gssd_running-with-more-reliable-check.patch | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/kernels/linux-libre-knock/sunrpc-replace-gssd_running-with-more-reliable-check.patch b/kernels/linux-libre-knock/sunrpc-replace-gssd_running-with-more-reliable-check.patch new file mode 100644 index 000000000..8cd5c0090 --- /dev/null +++ b/kernels/linux-libre-knock/sunrpc-replace-gssd_running-with-more-reliable-check.patch @@ -0,0 +1,139 @@ +Bugzilla: N/A +Upstream-status: queued in NFS git tree (for 3.13/3.14?) + +Now that we have a more reliable method to tell if gssd is running, we +can replace the sn->gssd_running flag with a function that will query to +see if it's up and running. + +There's also no need to attempt an upcall that we know will fail, so +just return -EACCES if gssd isn't running. Finally, fix the warn_gss() +message not to claim that that the upcall timed out since we don't +necesarily perform one now when gssd isn't running, and remove the +extraneous newline from the message. + +Signed-off-by: Jeff Layton <jlayton@redhat.com> +Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> +--- + Fixed up to apply to 3.12.1 by Josh Boyer <jwboyer@fedoraproject.org> + + include/linux/sunrpc/rpc_pipe_fs.h | 2 ++ + net/sunrpc/auth_gss/auth_gss.c | 17 +++++++---------- + net/sunrpc/netns.h | 2 -- + net/sunrpc/rpc_pipe.c | 14 ++++++++++---- + 4 files changed, 19 insertions(+), 16 deletions(-) + +diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h +index 85f1342..7f490be 100644 +--- a/include/linux/sunrpc/rpc_pipe_fs.h ++++ b/include/linux/sunrpc/rpc_pipe_fs.h +@@ -131,5 +131,7 @@ extern int rpc_unlink(struct dentry *); + extern int register_rpc_pipefs(void); + extern void unregister_rpc_pipefs(void); + ++extern bool gssd_running(struct net *net); ++ + #endif + #endif +diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c +index 0846566..1ada878 100644 +--- a/net/sunrpc/auth_gss/auth_gss.c ++++ b/net/sunrpc/auth_gss/auth_gss.c +@@ -517,8 +517,7 @@ static void warn_gssd(void) + unsigned long now = jiffies; + + if (time_after(now, ratelimit)) { +- printk(KERN_WARNING "RPC: AUTH_GSS upcall timed out.\n" +- "Please check user daemon is running.\n"); ++ pr_warn("RPC: AUTH_GSS upcall failed. Please check user daemon is running.\n"); + ratelimit = now + 15*HZ; + } + } +@@ -581,7 +580,6 @@ gss_create_upcall(struct gss_auth *gss_auth, struct gss_cred *gss_cred) + struct rpc_pipe *pipe; + struct rpc_cred *cred = &gss_cred->gc_base; + struct gss_upcall_msg *gss_msg; +- unsigned long timeout; + DEFINE_WAIT(wait); + int err; + +@@ -589,17 +587,16 @@ gss_create_upcall(struct gss_auth *gss_auth, struct gss_cred *gss_cred) + __func__, from_kuid(&init_user_ns, cred->cr_uid)); + retry: + err = 0; +- /* Default timeout is 15s unless we know that gssd is not running */ +- timeout = 15 * HZ; +- if (!sn->gssd_running) +- timeout = HZ >> 2; ++ /* if gssd is down, just skip upcalling altogether */ ++ if (!gssd_running(net)) { ++ warn_gssd(); ++ return -EACCES; ++ } + gss_msg = gss_setup_upcall(gss_auth, cred); + if (PTR_ERR(gss_msg) == -EAGAIN) { + err = wait_event_interruptible_timeout(pipe_version_waitqueue, +- sn->pipe_version >= 0, timeout); ++ sn->pipe_version >= 0, 15 * HZ); + if (sn->pipe_version < 0) { +- if (err == 0) +- sn->gssd_running = 0; + warn_gssd(); + err = -EACCES; + } +diff --git a/net/sunrpc/netns.h b/net/sunrpc/netns.h +index 8a8e841..94e506f 100644 +--- a/net/sunrpc/netns.h ++++ b/net/sunrpc/netns.h +@@ -33,8 +33,6 @@ struct sunrpc_net { + int pipe_version; + atomic_t pipe_users; + struct proc_dir_entry *use_gssp_proc; +- +- unsigned int gssd_running; + }; + + extern int sunrpc_net_id; +diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c +index 40aef18..ad444f3 100644 +--- a/net/sunrpc/rpc_pipe.c ++++ b/net/sunrpc/rpc_pipe.c +@@ -216,14 +216,11 @@ rpc_destroy_inode(struct inode *inode) + static int + rpc_pipe_open(struct inode *inode, struct file *filp) + { +- struct net *net = inode->i_sb->s_fs_info; +- struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); + struct rpc_pipe *pipe; + int first_open; + int res = -ENXIO; + + mutex_lock(&inode->i_mutex); +- sn->gssd_running = 1; + pipe = RPC_I(inode)->pipe; + if (pipe == NULL) + goto out; +@@ -1231,7 +1228,6 @@ int rpc_pipefs_init_net(struct net *net) + return PTR_ERR(sn->gssd_dummy); + + mutex_init(&sn->pipefs_sb_lock); +- sn->gssd_running = 1; + sn->pipe_version = -1; + return 0; + } +@@ -1385,6 +1381,16 @@ err_depopulate: + return err; + } + ++bool ++gssd_running(struct net *net) ++{ ++ struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); ++ struct rpc_pipe *pipe = sn->gssd_dummy; ++ ++ return pipe->nreaders || pipe->nwriters; ++} ++EXPORT_SYMBOL_GPL(gssd_running); ++ + static struct dentry * + rpc_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) |