diff options
Diffstat (limited to 'include/linux/fs_context.h')
| -rw-r--r-- | include/linux/fs_context.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/fs_context.h b/include/linux/fs_context.h index d794b04e9fbb..b1a95db7a111 100644 --- a/include/linux/fs_context.h +++ b/include/linux/fs_context.h @@ -83,11 +83,13 @@ struct fs_context { const char *source; /* The source name (eg. dev path) */ const char *subtype; /* The subtype to set on the superblock */ void *security; /* Linux S&M options */ + void *s_fs_info; /* Proposed s_fs_info */ unsigned int sb_flags; /* Proposed superblock flags (SB_*) */ unsigned int sb_flags_mask; /* Superblock flags that were changed */ unsigned int lsm_flags; /* Information flags from the fs to the LSM */ enum fs_context_purpose purpose:8; bool need_free:1; /* Need to call ops->free() */ + bool global:1; /* Goes into &init_user_ns */ }; struct fs_context_operations { @@ -116,6 +118,19 @@ extern int generic_parse_monolithic(struct fs_context *fc, void *data); extern int vfs_get_tree(struct fs_context *fc); extern void put_fs_context(struct fs_context *fc); +/* + * sget() wrapper to be called from the ->get_tree() op. + */ +enum vfs_get_super_keying { + vfs_get_single_super, /* Only one such superblock may exist */ + vfs_get_keyed_super, /* Superblocks with different s_fs_info keys may exist */ + vfs_get_independent_super, /* Multiple independent superblocks may exist */ +}; +extern int vfs_get_super(struct fs_context *fc, + enum vfs_get_super_keying keying, + int (*fill_super)(struct super_block *sb, + struct fs_context *fc)); + #define logfc(FC, FMT, ...) pr_notice(FMT, ## __VA_ARGS__) /** |