feat: simple device abstraction layer

[lunaix-os.git] / lunaix-os / includes / lunaix / fs.h

diff --git a/lunaix-os/includes/lunaix/fs.h b/lunaix-os/includes/lunaix/fs.h
index 0f8d0d56bb80e2f9aff24da6f80fb1e15910e981..fe9b39b6ea2cdff27de62b585c18a4bccf82a38c 100644 (file)
--- a/lunaix-os/includes/lunaix/fs.h
+++ b/lunaix-os/includes/lunaix/fs.h
@@ -6,6 +6,7 @@
 #include <lunaix/ds/hashtable.h>
 #include <lunaix/ds/hstr.h>
 #include <lunaix/ds/llist.h>
 #include <lunaix/ds/hashtable.h>
 #include <lunaix/ds/hstr.h>
 #include <lunaix/ds/llist.h>

+#include <lunaix/status.h>

 
 #define VFS_NAME_MAXLEN 128
 #define VFS_MAX_FD 32
 
 #define VFS_NAME_MAXLEN 128
 #define VFS_MAX_FD 32


@@ -14,33 +15,37 @@
 #define VFS_INODE_TYPE_FILE 0x2
 #define VFS_INODE_TYPE_DEVICE 0x4
 
 #define VFS_INODE_TYPE_FILE 0x2
 #define VFS_INODE_TYPE_DEVICE 0x4
 

-#define VFS_ETOOLONG -1

 #define VFS_ENOFS -2
 #define VFS_EBADMNT -3
 #define VFS_ENOFS -2
 #define VFS_EBADMNT -3

-#define VFS_ENODIR -4
+

 #define VFS_EENDOFDIR -5
 #define VFS_EENDOFDIR -5

-#define VFS_ENOTFOUND -6
-#define VFS_ENOOPS -7
+

 #define VFS_EINVLD -8
 #define VFS_EEOF -9
 
 #define VFS_WALK_MKPARENT 0x1
 #define VFS_WALK_FSRELATIVE 0x2
 #define VFS_EINVLD -8
 #define VFS_EEOF -9
 
 #define VFS_WALK_MKPARENT 0x1
 #define VFS_WALK_FSRELATIVE 0x2

-#define VFS_WALK_MKDIR 0x4
+#define VFS_WALK_PARENT 0x4

 
 #define VFS_IOBUF_FDIRTY 0x1
 
 
 #define VFS_IOBUF_FDIRTY 0x1
 

+#define FSTYPE_ROFS 0x1
+

 #define VFS_VALID_CHAR(chr)                                                    \
     ('A' <= (chr) && (chr) <= 'Z' || 'a' <= (chr) && (chr) <= 'z' ||           \
      '0' <= (chr) && (chr) <= '9' || (chr) == '.' || (chr) == '_' ||           \
      (chr) == '-')
 
 #define VFS_VALID_CHAR(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 filesystem
 {
     struct hlist_node fs_list;
     struct hstr fs_name;
 struct v_dnode;
 
 struct filesystem
 {
     struct hlist_node fs_list;
     struct hstr fs_name;

+    uint32_t types;

     int (*mount)(struct v_superblock* vsb, struct v_dnode* mount_point);
     int (*unmount)(struct v_superblock* vsb);
 };
     int (*mount)(struct v_superblock* vsb, struct v_dnode* mount_point);
     int (*unmount)(struct v_superblock* vsb);
 };


@@ -66,6 +71,7 @@ struct dir_context
     void* cb_data;
     void (*read_complete_callback)(struct dir_context* dctx,
                                    const char* name,
     void* cb_data;
     void (*read_complete_callback)(struct dir_context* dctx,
                                    const char* name,

+                                   const int len,

                                    const int dtype);
 };
 
                                    const int dtype);
 };
 


@@ -103,9 +109,11 @@ struct v_inode
     uint64_t lb_addr;
     uint32_t ref_count;
     uint32_t lb_usage;
     uint64_t lb_addr;
     uint32_t ref_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
     {
     void* data; // 允许底层FS绑定他的一些专有数据
     struct
     {

+        int (*create)(struct v_inode* inode, struct v_file* file);

         int (*open)(struct v_inode* inode, struct v_file* file);
         int (*sync)(struct v_inode* inode);
         int (*mkdir)(struct v_inode* inode, struct v_dnode* dnode);
         int (*open)(struct v_inode* inode, struct v_file* file);
         int (*sync)(struct v_inode* inode);
         int (*mkdir)(struct v_inode* inode, struct v_dnode* dnode);


@@ -143,6 +151,9 @@ fsm_register(struct filesystem* fs);
 struct filesystem*
 fsm_get(const char* fs_name);
 
 struct filesystem*
 fsm_get(const char* fs_name);
 

+void
+vfs_init();
+

 struct v_dnode*
 vfs_dcache_lookup(struct v_dnode* parent, struct hstr* str);
 
 struct v_dnode*
 vfs_dcache_lookup(struct v_dnode* parent, struct hstr* str);
 


@@ -153,18 +164,23 @@ int
 vfs_walk(struct v_dnode* start,
          const char* path,
          struct v_dnode** dentry,
 vfs_walk(struct v_dnode* start,
          const char* path,
          struct v_dnode** dentry,

+         struct hstr* component,

          int walk_options);
 
 int
          int walk_options);
 
 int

-vfs_mount(const char* fs_name, bdev_t device, struct v_dnode* mnt_point);
+vfs_mount(const char* target, const char* fs_name, bdev_t device);
+
+int
+vfs_unmount(const char* target);
+
+int
+vfs_mount_at(const char* fs_name, bdev_t device, struct v_dnode* mnt_point);

 
 int
 
 int

-vfs_unmount(struct v_dnode* mnt_point);
+vfs_unmount_at(struct v_dnode* mnt_point);

 
 int
 
 int

-vfs_mkdir(const char* parent_path,
-          const char* component,
-          struct v_dnode** dentry);
+vfs_mkdir(const char* path, struct v_dnode** dentry);

 
 int
 vfs_open(struct v_dnode* dnode, struct v_file** file);
 
 int
 vfs_open(struct v_dnode* dnode, struct v_file** file);