From 9a7056bf7bbd21f46640e8b171820d021dc32a8e Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Fri, 11 Apr 2014 04:46:52 -0300 Subject: linux-libre-{pae,xen}-3.14-4: updating version --- ...te-a-new-dummy-pipe-for-gssd-to-hold-open.patch | 241 --------------------- 1 file changed, 241 deletions(-) delete mode 100644 kernels/linux-libre-xen/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch (limited to 'kernels/linux-libre-xen/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch') diff --git a/kernels/linux-libre-xen/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch b/kernels/linux-libre-xen/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch deleted file mode 100644 index 2d398315e..000000000 --- a/kernels/linux-libre-xen/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch +++ /dev/null @@ -1,241 +0,0 @@ -From 4b9a445e3eeb8bd9278b1ae51c1b3a651e370cd6 Mon Sep 17 00:00:00 2001 -From: Jeff Layton -Date: Thu, 14 Nov 2013 07:25:17 -0500 -Subject: [PATCH 1/6] sunrpc: create a new dummy pipe for gssd to hold open - -rpc.gssd will naturally hold open any pipe named */clnt*/gssd that shows -up under rpc_pipefs. That behavior gives us a reliable mechanism to tell -whether it's actually running or not. - -Create a new toplevel "gssd" directory in rpc_pipefs when it's mounted. -Under that directory create another directory called "clntXX", and then -within that a pipe called "gssd". - -We'll never send an upcall along that pipe, and any downcall written to -it will just return -EINVAL. - -Signed-off-by: Jeff Layton -Signed-off-by: Trond Myklebust ---- - include/linux/sunrpc/rpc_pipe_fs.h | 3 +- - net/sunrpc/netns.h | 1 + - net/sunrpc/rpc_pipe.c | 93 ++++++++++++++++++++++++++++++++++++-- - net/sunrpc/sunrpc_syms.c | 8 +++- - 4 files changed, 100 insertions(+), 5 deletions(-) - -diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h -index a353e03..85f1342 100644 ---- a/include/linux/sunrpc/rpc_pipe_fs.h -+++ b/include/linux/sunrpc/rpc_pipe_fs.h -@@ -84,7 +84,8 @@ enum { - - extern struct dentry *rpc_d_lookup_sb(const struct super_block *sb, - const unsigned char *dir_name); --extern void rpc_pipefs_init_net(struct net *net); -+extern int rpc_pipefs_init_net(struct net *net); -+extern void rpc_pipefs_exit_net(struct net *net); - extern struct super_block *rpc_get_sb_net(const struct net *net); - extern void rpc_put_sb_net(const struct net *net); - -diff --git a/net/sunrpc/netns.h b/net/sunrpc/netns.h -index 779742c..8a8e841 100644 ---- a/net/sunrpc/netns.h -+++ b/net/sunrpc/netns.h -@@ -14,6 +14,7 @@ struct sunrpc_net { - struct cache_detail *rsi_cache; - - struct super_block *pipefs_sb; -+ struct rpc_pipe *gssd_dummy; - struct mutex pipefs_sb_lock; - - struct list_head all_clients; -diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c -index bf04b30..c23458b 100644 ---- a/net/sunrpc/rpc_pipe.c -+++ b/net/sunrpc/rpc_pipe.c -@@ -38,7 +38,7 @@ - #define NET_NAME(net) ((net == &init_net) ? " (init_net)" : "") - - static struct file_system_type rpc_pipe_fs_type; -- -+static const struct rpc_pipe_ops gssd_dummy_pipe_ops; - - static struct kmem_cache *rpc_inode_cachep __read_mostly; - -@@ -1159,6 +1159,7 @@ enum { - RPCAUTH_nfsd4_cb, - RPCAUTH_cache, - RPCAUTH_nfsd, -+ RPCAUTH_gssd, - RPCAUTH_RootEOF - }; - -@@ -1195,6 +1196,10 @@ static const struct rpc_filelist files[] = { - .name = "nfsd", - .mode = S_IFDIR | S_IRUGO | S_IXUGO, - }, -+ [RPCAUTH_gssd] = { -+ .name = "gssd", -+ .mode = S_IFDIR | S_IRUGO | S_IXUGO, -+ }, - }; - - /* -@@ -1208,13 +1213,25 @@ struct dentry *rpc_d_lookup_sb(const struct super_block *sb, - } - EXPORT_SYMBOL_GPL(rpc_d_lookup_sb); - --void rpc_pipefs_init_net(struct net *net) -+int rpc_pipefs_init_net(struct net *net) - { - struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); - -+ sn->gssd_dummy = rpc_mkpipe_data(&gssd_dummy_pipe_ops, 0); -+ if (IS_ERR(sn->gssd_dummy)) -+ return PTR_ERR(sn->gssd_dummy); -+ - mutex_init(&sn->pipefs_sb_lock); - sn->gssd_running = 1; - sn->pipe_version = -1; -+ return 0; -+} -+ -+void rpc_pipefs_exit_net(struct net *net) -+{ -+ struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); -+ -+ rpc_destroy_pipe_data(sn->gssd_dummy); - } - - /* -@@ -1244,11 +1261,73 @@ void rpc_put_sb_net(const struct net *net) - } - EXPORT_SYMBOL_GPL(rpc_put_sb_net); - -+static const struct rpc_filelist gssd_dummy_clnt_dir[] = { -+ [0] = { -+ .name = "clntXX", -+ .mode = S_IFDIR | S_IRUGO | S_IXUGO, -+ }, -+}; -+ -+static ssize_t -+dummy_downcall(struct file *filp, const char __user *src, size_t len) -+{ -+ return -EINVAL; -+} -+ -+static const struct rpc_pipe_ops gssd_dummy_pipe_ops = { -+ .upcall = rpc_pipe_generic_upcall, -+ .downcall = dummy_downcall, -+}; -+ -+/** -+ * rpc_gssd_dummy_populate - create a dummy gssd pipe -+ * @root: root of the rpc_pipefs filesystem -+ * @pipe_data: pipe data created when netns is initialized -+ * -+ * Create a dummy set of directories and a pipe that gssd can hold open to -+ * indicate that it is up and running. -+ */ -+static struct dentry * -+rpc_gssd_dummy_populate(struct dentry *root, struct rpc_pipe *pipe_data) -+{ -+ int ret = 0; -+ struct dentry *gssd_dentry; -+ struct dentry *clnt_dentry = NULL; -+ struct dentry *pipe_dentry = NULL; -+ struct qstr q = QSTR_INIT(files[RPCAUTH_gssd].name, -+ strlen(files[RPCAUTH_gssd].name)); -+ -+ /* We should never get this far if "gssd" doesn't exist */ -+ gssd_dentry = d_hash_and_lookup(root, &q); -+ if (!gssd_dentry) -+ return ERR_PTR(-ENOENT); -+ -+ ret = rpc_populate(gssd_dentry, gssd_dummy_clnt_dir, 0, 1, NULL); -+ if (ret) { -+ pipe_dentry = ERR_PTR(ret); -+ goto out; -+ } -+ -+ q.name = gssd_dummy_clnt_dir[0].name; -+ q.len = strlen(gssd_dummy_clnt_dir[0].name); -+ clnt_dentry = d_hash_and_lookup(gssd_dentry, &q); -+ if (!clnt_dentry) { -+ pipe_dentry = ERR_PTR(-ENOENT); -+ goto out; -+ } -+ -+ pipe_dentry = rpc_mkpipe_dentry(clnt_dentry, "gssd", NULL, pipe_data); -+out: -+ dput(clnt_dentry); -+ dput(gssd_dentry); -+ return pipe_dentry; -+} -+ - static int - rpc_fill_super(struct super_block *sb, void *data, int silent) - { - struct inode *inode; -- struct dentry *root; -+ struct dentry *root, *gssd_dentry; - struct net *net = data; - struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); - int err; -@@ -1266,6 +1345,13 @@ rpc_fill_super(struct super_block *sb, void *data, int silent) - return -ENOMEM; - if (rpc_populate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF, NULL)) - return -ENOMEM; -+ -+ gssd_dentry = rpc_gssd_dummy_populate(root, sn->gssd_dummy); -+ if (IS_ERR(gssd_dentry)) { -+ __rpc_depopulate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF); -+ return PTR_ERR(gssd_dentry); -+ } -+ - dprintk("RPC: sending pipefs MOUNT notification for net %p%s\n", - net, NET_NAME(net)); - mutex_lock(&sn->pipefs_sb_lock); -@@ -1280,6 +1366,7 @@ rpc_fill_super(struct super_block *sb, void *data, int silent) - return 0; - - err_depopulate: -+ dput(gssd_dentry); - blocking_notifier_call_chain(&rpc_pipefs_notifier_list, - RPC_PIPEFS_UMOUNT, - sb); -diff --git a/net/sunrpc/sunrpc_syms.c b/net/sunrpc/sunrpc_syms.c -index 3d6498a..cd30120 100644 ---- a/net/sunrpc/sunrpc_syms.c -+++ b/net/sunrpc/sunrpc_syms.c -@@ -44,12 +44,17 @@ static __net_init int sunrpc_init_net(struct net *net) - if (err) - goto err_unixgid; - -- rpc_pipefs_init_net(net); -+ err = rpc_pipefs_init_net(net); -+ if (err) -+ goto err_pipefs; -+ - INIT_LIST_HEAD(&sn->all_clients); - spin_lock_init(&sn->rpc_client_lock); - spin_lock_init(&sn->rpcb_clnt_lock); - return 0; - -+err_pipefs: -+ unix_gid_cache_destroy(net); - err_unixgid: - ip_map_cache_destroy(net); - err_ipmap: -@@ -60,6 +65,7 @@ err_proc: - - static __net_exit void sunrpc_exit_net(struct net *net) - { -+ rpc_pipefs_exit_net(net); - unix_gid_cache_destroy(net); - ip_map_cache_destroy(net); - rpc_proc_exit(net); --- -1.8.5.3 - -- cgit v1.2.3