diff options
Diffstat (limited to 'src/kernel/include/vfs.h')
| -rw-r--r-- | src/kernel/include/vfs.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/kernel/include/vfs.h b/src/kernel/include/vfs.h index 2a5f3d8..140365c 100644 --- a/src/kernel/include/vfs.h +++ b/src/kernel/include/vfs.h @@ -2,6 +2,7 @@ #include <stdbool.h> #include <malloc.h> +#include <hashtbl.h> #include <fs.h> // common header @@ -53,8 +54,11 @@ typedef struct fs_handle { // Remarks : // - fs_node_t not to be used in public interface // - nodes keep a reference to their parent -// - unink() is expected to unink the node from its parent (make it inaccessible), but not dispose -// of its data before dispos() is called !! +// - a FS node is either in memory (after one call to walk() on its parent), or not in memory +// it can be in memory only once : if it is in memory, walk() cannot be called on the parent again +// - unlink() is expected to unlink the node from its parent (make it inaccessible) and delete +// the corresponding data. It is guaranteed that unlink() is never called on a node that +// is currently in use. (different from posix semantics !) // - the root node of a filesystem is created when the filesystem is created // - dispose() is not called on the root node when a filesystem is shutdown @@ -70,10 +74,14 @@ typedef struct { } fs_node_ops_t; typedef struct fs_node { - // These three fields are filled by the VFS's generic walk() code + // These fields are filled by the VFS's generic walk() code struct fs *fs; int refs; + hashtbl_t *children; // not all children, only those in memory + struct fs_node *parent; + char* name; // name in parent + // These fields are filled by the FS's specific walk() code fs_node_ops_t *ops; fs_node_ptr data; |