diff options
| -rw-r--r-- | fs/kernfs/mount.c | 23 | ||||
| -rw-r--r-- | include/linux/kernfs.h | 3 |
2 files changed, 26 insertions, 0 deletions
diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c index 0d6ce895a9ee..70cc6983d9b5 100644 --- a/fs/kernfs/mount.c +++ b/fs/kernfs/mount.c @@ -19,10 +19,33 @@ struct kmem_cache *kernfs_node_cache; +static int kernfs_sop_remount_fs(struct super_block *sb, int *flags, char *data) +{ + struct kernfs_root *root = kernfs_info(sb)->root; + struct kernfs_syscall_ops *scops = root->syscall_ops; + + if (scops && scops->remount_fs) + return scops->remount_fs(root, flags, data); + return 0; +} + +static int kernfs_sop_show_options(struct seq_file *sf, struct dentry *dentry) +{ + struct kernfs_root *root = kernfs_root(dentry->d_fsdata); + struct kernfs_syscall_ops *scops = root->syscall_ops; + + if (scops && scops->show_options) + return scops->show_options(sf, root); + return 0; +} + static const struct super_operations kernfs_sops = { .statfs = simple_statfs, .drop_inode = generic_delete_inode, .evict_inode = kernfs_evict_inode, + + .remount_fs = kernfs_sop_remount_fs, + .show_options = kernfs_sop_show_options, }; static int kernfs_fill_super(struct super_block *sb) diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index 5ddc47450335..5d5b7e947294 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -115,6 +115,9 @@ struct kernfs_node { * kernfs_node parameter. */ struct kernfs_syscall_ops { + int (*remount_fs)(struct kernfs_root *root, int *flags, char *data); + int (*show_options)(struct seq_file *sf, struct kernfs_root *root); + int (*mkdir)(struct kernfs_node *parent, const char *name, umode_t mode); int (*rmdir)(struct kernfs_node *kn); |