X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/d8d001a6664b88b66524989589fcd809de6d3a92..07dec283edc4b849c42efa9fbd23c6e9247e8788:/lunaix-os/includes/lunaix/fs.h

diff --git a/lunaix-os/includes/lunaix/fs.h b/lunaix-os/includes/lunaix/fs.h
index 2d405ee..37c8228 100644
--- a/lunaix-os/includes/lunaix/fs.h
+++ b/lunaix-os/includes/lunaix/fs.h
@@ -3,19 +3,24 @@
 
 #include <hal/ahci/hba.h>
 #include <lunaix/block.h>
+#include <lunaix/clock.h>
 #include <lunaix/ds/btrie.h>
 #include <lunaix/ds/hashtable.h>
 #include <lunaix/ds/hstr.h>
 #include <lunaix/ds/llist.h>
+#include <lunaix/ds/lru.h>
+#include <lunaix/ds/mutex.h>
 #include <lunaix/status.h>
+#include <stdatomic.h>
 
 #define VFS_NAME_MAXLEN 128
 #define VFS_MAX_FD 32
 
-#define VFS_INODE_TYPE_DIR 0x1
-#define VFS_INODE_TYPE_FILE 0x2
-#define VFS_INODE_TYPE_DEVICE 0x4
-#define VFS_INODE_TYPE_SYMLINK 0x8
+#define VFS_IFDIR 0x1
+#define VFS_IFFILE 0x2
+#define VFS_IFSEQDEV 0x4
+#define VFS_IFVOLDEV 0x8
+#define VFS_IFSYMLINK 0x16
 
 #define VFS_WALK_MKPARENT 0x1
 #define VFS_WALK_FSRELATIVE 0x2
@@ -25,14 +30,18 @@
 #define FSTYPE_ROFS 0x1
 
 #define VFS_VALID_CHAR(chr)                                                    \
-    ('A' <= (chr) && (chr) <= 'Z' || 'a' <= (chr) && (chr) <= 'z' ||           \
-     '0' <= (chr) && (chr) <= '9' || (chr) == '.' || (chr) == '_' ||           \
+    (('A' <= (chr) && (chr) <= 'Z') || ('a' <= (chr) && (chr) <= 'z') ||       \
+     ('0' <= (chr) && (chr) <= '9') || (chr) == '.' || (chr) == '_' ||         \
      (chr) == '-')
 
 extern struct hstr vfs_ddot;
 extern struct hstr vfs_dot;
 
 struct v_dnode;
+struct v_inode;
+struct v_superblock;
+struct v_file;
+struct v_fd;
 struct pcache;
 
 struct filesystem
@@ -71,13 +80,13 @@ struct dir_context
 
 struct v_file_ops
 {
-    int (*write)(struct v_file* file, void* buffer, size_t len, size_t fpos);
-    int (*read)(struct v_file* file, void* buffer, size_t len, size_t fpos);
-    int (*readdir)(struct v_file* file, struct dir_context* dctx);
-    int (*seek)(struct v_file* file, size_t offset);
-    int (*rename)(struct v_file* file, char* new_name);
+    int (*write)(struct v_inode* inode, void* buffer, size_t len, size_t fpos);
+    int (*read)(struct v_inode* inode, void* buffer, size_t len, size_t fpos);
+    int (*readdir)(struct v_inode* inode, struct dir_context* dctx);
+    int (*seek)(struct v_inode* inode, size_t offset);
+    int (*rename)(struct v_inode* inode, char* new_name);
     int (*close)(struct v_file* file);
-    int (*sync)(struct v_file* file);
+    int (*sync)(struct v_inode* inode);
 };
 
 struct v_file
@@ -86,8 +95,7 @@ struct v_file
     struct v_dnode* dnode;
     struct llist_header* f_list;
     uint32_t f_pos;
-    uint32_t ref_count;
-    void* data; // 允许底层FS绑定他的一些专有数据
+    atomic_ulong ref_count;
     struct v_file_ops ops;
 };
 
@@ -99,10 +107,12 @@ struct v_fd
 
 struct v_inode
 {
+    mutex_t lock;
     uint32_t itype;
-    uint32_t ctime;
-    uint32_t mtime;
-    uint64_t lb_addr;
+    time_t ctime;
+    time_t mtime;
+    time_t atime;
+    lba_t lb_addr;
     uint32_t open_count;
     uint32_t link_count;
     uint32_t lb_usage;
@@ -111,7 +121,7 @@ struct v_inode
     void* data; // 允许底层FS绑定他的一些专有数据
     struct
     {
-        int (*create)(struct v_inode* this);
+        int (*create)(struct v_inode* this, struct v_dnode* dnode);
         int (*open)(struct v_inode* this, struct v_file* file);
         int (*sync)(struct v_inode* this);
         int (*mkdir)(struct v_inode* this, struct v_dnode* dnode);
@@ -122,10 +132,12 @@ struct v_inode
         int (*symlink)(struct v_inode* this, const char* target);
         int (*dir_lookup)(struct v_inode* this, struct v_dnode* dnode);
     } ops;
+    struct v_file_ops default_fops;
 };
 
 struct v_dnode
 {
+    mutex_t lock; // sync the path walking
     struct hstr name;
     struct v_inode* inode;
     struct v_dnode* parent;
@@ -133,6 +145,7 @@ struct v_dnode
     struct llist_header children;
     struct llist_header siblings;
     struct v_superblock* super_block;
+    atomic_ulong ref_count;
     struct
     {
         void (*destruct)(struct v_dnode* dnode);
@@ -148,6 +161,7 @@ struct pcache_pg
 {
     struct llist_header pg_list;
     struct llist_header dirty_list;
+    struct lru_node lru;
     void* pg;
     uint32_t flags;
     uint32_t fpos;
@@ -155,6 +169,7 @@ struct pcache_pg
 
 struct pcache
 {
+    struct v_inode* master;
     struct btrie tree;
     struct llist_header pages;
     struct llist_header dirty;
@@ -230,6 +245,9 @@ vfs_i_alloc();
 void
 vfs_i_free(struct v_inode* inode);
 
+int
+vfs_dup_fd(struct v_fd* old, struct v_fd** new);
+
 void
 pcache_init(struct pcache* pcache);
 
@@ -249,20 +267,20 @@ pcache_get_page(struct pcache* pcache,
                 struct pcache_pg** page);
 
 int
-pcache_write(struct v_file* file, void* data, uint32_t len);
+pcache_write(struct v_inode* inode, void* data, uint32_t len, uint32_t fpos);
 
 int
-pcache_read(struct v_file* file, void* data, uint32_t len);
+pcache_read(struct v_inode* inode, void* data, uint32_t len, uint32_t fpos);
 
 void
 pcache_release(struct pcache* pcache);
 
 int
-pcache_commit(struct v_file* file, struct pcache_pg* page);
+pcache_commit(struct v_inode* inode, struct pcache_pg* page);
 
 void
-pcache_invalidate(struct v_file* file, struct pcache_pg* page);
+pcache_commit_all(struct v_inode* inode);
 
 void
-pcache_commit_all(struct v_file* file);
+pcache_invalidate(struct pcache* pcache, struct pcache_pg* page);
 #endif /* __LUNAIX_VFS_H */