summaryrefslogtreecommitdiff
path: root/libre/linux-libre/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch
diff options
context:
space:
mode:
Diffstat (limited to 'libre/linux-libre/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch')
-rw-r--r--libre/linux-libre/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch241
1 files changed, 0 insertions, 241 deletions
diff --git a/libre/linux-libre/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch b/libre/linux-libre/0001-sunrpc-create-a-new-dummy-pipe-for-gssd-to-hold-open.patch
deleted file mode 100644
index 2d398315e..000000000
--- a/libre/linux-libre/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 <jlayton@redhat.com>
-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 <jlayton@redhat.com>
-Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
----
- 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
-
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 02:08:45 +0000