diff options
| -rw-r--r-- | fs/nfsd/nfsctl.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 90972e1fd785..0f154b0e1c8a 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -7,6 +7,7 @@ #include <linux/slab.h> #include <linux/namei.h> #include <linux/ctype.h> +#include <linux/fs_context.h> #include <linux/sunrpc/svcsock.h> #include <linux/lockd/lockd.h> @@ -1146,7 +1147,7 @@ static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size) * populating the filesystem. */ -static int nfsd_fill_super(struct super_block * sb, void * data, int silent) +static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc) { static const struct tree_descr nfsd_files[] = { [NFSD_List] = {"exports", &exports_nfsd_operations, S_IRUGO}, @@ -1176,15 +1177,33 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent) #endif /* last one */ {""} }; - get_net(sb->s_fs_info); + return simple_fill_super(sb, 0x6e667364, nfsd_files); } -static struct dentry *nfsd_mount(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data) +static int nfsd_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, nfsd_fill_super); +} + +static void nfsd_fs_free_fc(struct fs_context *fc) +{ + if (fc->s_fs_info) + put_net(fc->s_fs_info); +} + +static const struct fs_context_operations nfsd_fs_context_ops = { + .free = nfsd_fs_free_fc, + .get_tree = nfsd_fs_get_tree, +}; + +static int nfsd_init_fs_context(struct fs_context *fc) { - struct net *net = current->nsproxy->net_ns; - return mount_ns(fs_type, flags, data, net, net->user_ns, nfsd_fill_super); + put_user_ns(fc->user_ns); + fc->user_ns = get_user_ns(fc->net_ns->user_ns); + fc->ops = &nfsd_fs_context_ops; + return 0; } static void nfsd_umount(struct super_block *sb) @@ -1198,7 +1217,7 @@ static void nfsd_umount(struct super_block *sb) static struct file_system_type nfsd_fs_type = { .owner = THIS_MODULE, .name = "nfsd", - .mount = nfsd_mount, + .init_fs_context = nfsd_init_fs_context, .kill_sb = nfsd_umount, }; MODULE_ALIAS_FS("nfsd"); |