X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/bb7ce16533fb6c1384775dea6e1150e74c229daf..ea77b9c3fc7fb9bf9d7f9604fc187c8049212a2a:/lunaix-os/includes/lunaix/fs.h

diff --git a/lunaix-os/includes/lunaix/fs.h b/lunaix-os/includes/lunaix/fs.h
index b497954..539f0a8 100644
--- a/lunaix-os/includes/lunaix/fs.h
+++ b/lunaix-os/includes/lunaix/fs.h
@@ -172,6 +172,18 @@ struct v_fd
     int flags;
 };
 
+// FIXME how do we invalidate corresponding v_dnodes given the v_inode?
+/*
+    Consider taskfs, which is Lunaix's speak of Linux's procfs, that allow
+    info of every process being accessible via file system. Each process's
+    creation will result a creation of a directory under the root of task fs
+    with it's pid as name. But that dir must delete when process is killed, and
+    such deletion does not mediated by vfs itself, so there is a need of cache
+    syncing.
+    And this is also the case of all ramfs where argumentation to file tree is
+    performed by third party.
+*/
+
 struct v_inode
 {
     inode_t id;
@@ -185,12 +197,13 @@ struct v_inode
     uint32_t link_count;
     uint32_t lb_usage;
     uint32_t fsize;
+    void* data; // 允许底层FS绑定他的一些专有数据
+    struct llist_header aka_dnodes;
     struct llist_header xattrs;
     struct v_superblock* sb;
     struct hlist_node hash_list;
     struct lru_node lru;
     struct pcache* pg_cache;
-    void* data; // 允许底层FS绑定他的一些专有数据
     struct v_inode_ops* ops;
     struct v_file_ops* default_fops;
 };
@@ -216,6 +229,7 @@ struct v_dnode
     struct v_inode* inode;
     struct v_dnode* parent;
     struct hlist_node hash_list;
+    struct llist_header aka_list;
     struct llist_header children;
     struct llist_header siblings;
     struct v_superblock* super_block;
@@ -250,7 +264,7 @@ struct pcache_pg
     uint32_t flags;
     uint32_t fpos;
 };
-/* --- file system manager --- */
+
 void
 fsm_init();
 
@@ -269,6 +283,9 @@ fsm_get(const char* fs_name);
 void
 vfs_init();
 
+void
+vfs_export_attributes();
+
 struct v_dnode*
 vfs_dcache_lookup(struct v_dnode* parent, struct hstr* str);
 
@@ -318,6 +335,9 @@ vfs_mkdir(const char* path, struct v_dnode** dentry);
 int
 vfs_open(struct v_dnode* dnode, struct v_file** file);
 
+int
+vfs_pclose(struct v_file* file, pid_t pid);
+
 int
 vfs_close(struct v_file* file);
 
@@ -357,6 +377,18 @@ vfs_dup_fd(struct v_fd* old, struct v_fd** new);
 int
 vfs_getfd(int fd, struct v_fd** fd_s);
 
+int
+vfs_get_dtype(int itype);
+
+void
+vfs_ref_dnode(struct v_dnode* dnode);
+
+void
+vfs_unref_dnode(struct v_dnode* dnode);
+
+int
+vfs_get_path(struct v_dnode* dnode, char* buf, size_t size, int depth);
+
 void
 pcache_init(struct pcache* pcache);