diff options
Diffstat (limited to 'src/kernel/include/vfs.h')
| -rw-r--r-- | src/kernel/include/vfs.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/kernel/include/vfs.h b/src/kernel/include/vfs.h index a34681b..90944b2 100644 --- a/src/kernel/include/vfs.h +++ b/src/kernel/include/vfs.h @@ -40,15 +40,22 @@ struct fs; struct fs_node; typedef struct user_region user_region_t; +typedef struct fs_node_ops fs_node_ops_t; // ------------------------------------------- // Structure defining a handle to an open file // This structure is entirely managed by the VFS, the underlying filesystem does not see it +// For IPC structures (sockets, channels), fs and node are null because the handle does not reference +// an underlying object. The ops and data fields are filled in by the IPC code with corresponding +// data structures. All VFS calls are done on ops and data as specified in the handle and not the node. typedef struct fs_handle { struct fs *fs; struct fs_node *node; + fs_node_ops_t *ops; + fs_node_ptr data; + int refs; int mode; @@ -74,7 +81,7 @@ typedef struct fs_handle { // - dispose() is not called on the root node when a filesystem is shutdown // - delete() is not expected to delete recursively : it should fail on a non-empty directory -typedef struct { +typedef struct fs_node_ops { bool (*open)(fs_node_ptr n, int mode); size_t (*read)(fs_node_ptr f, size_t offset, size_t len, char* buf); size_t (*write)(fs_node_ptr f, size_t offset, size_t len, const char* buf); |