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 8cabfa1..d18009d 100644 (file)
--- a/KernelLand/Kernel/include/vfs_ext.h
+++ b/KernelLand/Kernel/include/vfs_ext.h
@@ -13,6 +13,8 @@ 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)
 /**
@@ -20,17 +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
 /**
@@ -114,14 +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;
 
 /**
@@ -142,6 +148,10 @@ typedef struct sFInfo
        tVFS_ACL        acls[]; //!< ACL buffer (size is passed in the \a MaxACLs argument to VFS_FInfo)
 } PACKED tFInfo;
 
+// --- fd_set --
+#include "../../../Usermode/Libraries/ld-acess.so_src/include_exp/acess/fd_set.h"
+
+#if 0
 /**
  * \brief fd_set for select()
  */
@@ -169,6 +179,7 @@ typedef struct
  * \param fdsetp       Set to modify
  */
 #define FD_ISSET(fd, fdsetp) ((fdsetp)->flags[(fd)/16]&(1<<((fd)%16)))
+#endif
 
 // === FUNCTIONS ===
 /**
@@ -211,12 +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
@@ -276,7 +304,7 @@ extern Uint64       VFS_Tell(int FD);
  * \param Buffer       Destination of read data
  * \return Number of read bytes
  */
-extern Uint64  VFS_Read(int FD, Uint64 Length, void *Buffer);
+extern size_t  VFS_Read(int FD, size_t Length, void *Buffer);
 /**
  * \brief Writes data to a file
  * \param FD   File handle returned by ::VFS_Open
@@ -284,7 +312,7 @@ extern Uint64       VFS_Read(int FD, Uint64 Length, void *Buffer);
  * \param Buffer       Source of written data
  * \return Number of bytes written
  */
-extern Uint64  VFS_Write(int FD, Uint64 Length, const void *Buffer);
+extern size_t  VFS_Write(int FD, size_t Length, const void *Buffer);
 
 /**
  * \brief Reads from a specific offset in the file
@@ -294,7 +322,7 @@ extern Uint64       VFS_Write(int FD, Uint64 Length, const void *Buffer);
  * \param Buffer       Source of read data
  * \return Number of bytes read
  */
-extern Uint64  VFS_ReadAt(int FD, Uint64 Offset, Uint64 Length, void *Buffer);
+extern size_t  VFS_ReadAt(int FD, Uint64 Offset, size_t Length, void *Buffer);
 /**
  * \brief Writes to a specific offset in the file
  * \param FD   File handle returned by ::VFS_Open
@@ -303,7 +331,7 @@ extern Uint64       VFS_ReadAt(int FD, Uint64 Offset, Uint64 Length, void *Buffer);
  * \param Buffer       Source of written data
  * \return Number of bytes written
  */
-extern Uint64  VFS_WriteAt(int FD, Uint64 Offset, Uint64 Length, const void *Buffer);
+extern size_t  VFS_WriteAt(int FD, Uint64 Offset, size_t Length, const void *Buffer);
 
 /**
  * \brief Sends an IOCtl request to the driver
@@ -368,10 +396,10 @@ extern int        VFS_Symlink(const char *Name, const char *Link);
 /**
  * \brief Read from a directory
  * \param FD   File handle returned by ::VFS_Open
- * \param Dest Destination array for the file name (max 255 bytes)
+ * \param Dest Destination array for the file name (max FILENAME_MAX bytes)
  * \return Boolean Success
  */
-extern int     VFS_ReadDir(int FD, char *Dest);
+extern int     VFS_ReadDir(int FD, char Dest[FILENAME_MAX]);
 /**
  * \brief Wait for an aciton on a file descriptor
  * \param MaxHandle    Maximum set handle in \a *Handles