Kernel - Implimented VFS_Reopen

[tpg/acess2.git] / KernelLand / Kernel / include / vfs_ext.h

diff --git a/KernelLand/Kernel/include/vfs_ext.h b/KernelLand/Kernel/include/vfs_ext.h
index a130ac6..d18009d 100644 (file)
--- a/KernelLand/Kernel/include/vfs_ext.h
+++ b/KernelLand/Kernel/include/vfs_ext.h
@@ -13,6 +13,7 @@ typedef Uint64        tInode;
 typedef Uint32 tMount;
 
 // === CONSTANTS ===
+//! Maximum length of a filename (including NULL byte)
 #define FILENAME_MAX   256
 //! Maximum size of a Memory Path generated by VFS_GetMemPath
 #define        VFS_MEMPATH_SIZE        (3 + (BITS/4)*2)
@@ -21,17 +22,19 @@ typedef Uint32      tMount;
  * \{
  */
 //! Open for execution
-#define VFS_OPENFLAG_EXEC      0x01
+#define VFS_OPENFLAG_EXEC      0x001
 //! Open for reading
-#define VFS_OPENFLAG_READ      0x02
+#define VFS_OPENFLAG_READ      0x002
 //! Open for writing
-#define VFS_OPENFLAG_WRITE     0x04
+#define VFS_OPENFLAG_WRITE     0x004
 //! Do not resolve the final symbolic link
-#define        VFS_OPENFLAG_NOLINK     0x40
+#define        VFS_OPENFLAG_NOLINK     0x040
 //! Create the file if it doesn't exist
-#define VFS_OPENFLAG_CREATE    0x80
+#define VFS_OPENFLAG_CREATE    0x080
+//! Open file as non-blocking
+#define VFS_OPENFLAG_NONBLOCK  0x100
 //! Treat as a directory
-#define VFS_OPENFLAG_DIRECTORY 0x100
+#define VFS_OPENFLAG_DIRECTORY 0x1000
 //! Open as a user
 #define        VFS_OPENFLAG_USER       0x8000
 /**
@@ -115,14 +118,16 @@ enum eVFS_SeekDirs
  */
 typedef struct sVFS_ACL
 {
+       //! ACL entity selection
        struct {
                unsigned Group: 1;      //!< Group (as opposed to user) flag
                unsigned ID:    31;     //!< ID of Group/User (-1 for nobody/world)
-       };
+       } Ent;
+       //! ACL Permissions mask
        struct {
                unsigned Inv:   1;      //!< Invert Permissions
                unsigned Perms: 31;     //!< Permission Flags
-       };
+       } Perm;
 } tVFS_ACL;
 
 /**
@@ -217,12 +222,29 @@ extern int        VFS_OpenChild(int FD, const char *Name, Uint Mode);
  */
 extern int     VFS_OpenInode(Uint32 Mount, Uint64 Inode, int Mode);
 
+/**
+ * \brief Open a file reusing an old FD
+ */
+extern int     VFS_Reopen(int FD, const char *Path, int Flags);
+
 /**
  * \brief Close a currently open file
  * \param FD   Handle returned by ::VFS_Open
  */
 extern void    VFS_Close(int FD);
 
+/**
+ * \brief Copy one FD to another
+ * \param SrcFD        Source file descriptor
+ * \param DstFD        Destination file descriptor (-1 means allocate new)
+ */
+extern int     VFS_DuplicateFD(int SrcFD, int DstFD);
+
+/**
+ * \brief Update the flags on a FD
+ */
+extern int     VFS_SetFDFlags(int FD, int Mask, int Value);
+
 /**
  * \brief Get file information from an open file
  * \param FD   File handle returned by ::VFS_Open