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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-19 20:42:02 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-19 20:42:02 +0300
commit933a90bf4f3505f8ec83bda21a3c7d70d7c2b426 (patch)
treeca81c209000a15670e3582760ad9bae1a9cde215 /net/sunrpc/rpc_pipe.c
parent5f4fc6d440d77a2cf74fe4ea56955674ac7e35e7 (diff)
parent037f11b4752f717201143a1dc5d6acf3cb71ddfa (diff)
downloadlinux-933a90bf4f3505f8ec83bda21a3c7d70d7c2b426.tar.xz
Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs mount updates from Al Viro: "The first part of mount updates. Convert filesystems to use the new mount API" * 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits) mnt_init(): call shmem_init() unconditionally constify ksys_mount() string arguments don't bother with registering rootfs init_rootfs(): don't bother with init_ramfs_fs() vfs: Convert smackfs to use the new mount API vfs: Convert selinuxfs to use the new mount API vfs: Convert securityfs to use the new mount API vfs: Convert apparmorfs to use the new mount API vfs: Convert openpromfs to use the new mount API vfs: Convert xenfs to use the new mount API vfs: Convert gadgetfs to use the new mount API vfs: Convert oprofilefs to use the new mount API vfs: Convert ibmasmfs to use the new mount API vfs: Convert qib_fs/ipathfs to use the new mount API vfs: Convert efivarfs to use the new mount API vfs: Convert configfs to use the new mount API vfs: Convert binfmt_misc to use the new mount API convenience helper: get_tree_single() convenience helper get_tree_nodev() vfs: Kill sget_userns() ...
Diffstat (limited to 'net/sunrpc/rpc_pipe.c')
-rw-r--r--net/sunrpc/rpc_pipe.c34
1 files changed, 26 insertions, 8 deletions
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 73bd62979fe7..748bac601e47 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -14,6 +14,7 @@
#include <linux/string.h>
#include <linux/pagemap.h>
#include <linux/mount.h>
+#include <linux/fs_context.h>
#include <linux/namei.h>
#include <linux/fsnotify.h>
#include <linux/kernel.h>
@@ -1352,11 +1353,11 @@ rpc_gssd_dummy_depopulate(struct dentry *pipe_dentry)
}
static int
-rpc_fill_super(struct super_block *sb, void *data, int silent)
+rpc_fill_super(struct super_block *sb, struct fs_context *fc)
{
struct inode *inode;
struct dentry *root, *gssd_dentry;
- struct net *net = get_net(sb->s_fs_info);
+ struct net *net = sb->s_fs_info;
struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
int err;
@@ -1413,12 +1414,29 @@ gssd_running(struct net *net)
}
EXPORT_SYMBOL_GPL(gssd_running);
-static struct dentry *
-rpc_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
+static int rpc_fs_get_tree(struct fs_context *fc)
+{
+ fc->s_fs_info = get_net(fc->net_ns);
+ return vfs_get_super(fc, vfs_get_keyed_super, rpc_fill_super);
+}
+
+static void rpc_fs_free_fc(struct fs_context *fc)
{
- struct net *net = current->nsproxy->net_ns;
- return mount_ns(fs_type, flags, data, net, net->user_ns, rpc_fill_super);
+ if (fc->s_fs_info)
+ put_net(fc->s_fs_info);
+}
+
+static const struct fs_context_operations rpc_fs_context_ops = {
+ .free = rpc_fs_free_fc,
+ .get_tree = rpc_fs_get_tree,
+};
+
+static int rpc_init_fs_context(struct fs_context *fc)
+{
+ put_user_ns(fc->user_ns);
+ fc->user_ns = get_user_ns(fc->net_ns->user_ns);
+ fc->ops = &rpc_fs_context_ops;
+ return 0;
}
static void rpc_kill_sb(struct super_block *sb)
@@ -1446,7 +1464,7 @@ out:
static struct file_system_type rpc_pipe_fs_type = {
.owner = THIS_MODULE,
.name = "rpc_pipefs",
- .mount = rpc_mount,
+ .init_fs_context = rpc_init_fs_context,
.kill_sb = rpc_kill_sb,
};
MODULE_ALIAS_FS("rpc_pipefs");