/* ** Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved. ** Distributed under the terms of the OpenBeOS License. */ #ifndef KERNEL_BOOT_VFS_H #define KERNEL_BOOT_VFS_H #include #include #include #ifdef __cplusplus /** This is the base class for all VFS nodes */ class Node { public: Node(); virtual ~Node(); virtual status_t Open(void **_cookie, int mode); virtual status_t Close(void *cookie); virtual ssize_t ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize) = 0; virtual ssize_t WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize) = 0; virtual status_t GetName(char *nameBuffer, size_t bufferSize) const; virtual int32 Type() const; virtual off_t Size() const; status_t Acquire(); status_t Release(); protected: list_link fLink; int32 fRefCount; }; class Directory : public Node { public: Directory(); virtual ssize_t ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize); virtual ssize_t WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize); virtual int32 Type() const; virtual Node *Lookup(const char *name, bool traverseLinks) = 0; virtual status_t GetNextEntry(void *cookie, char *nameBuffer, size_t bufferSize) = 0; virtual status_t GetNextNode(void *cookie, Node **_node) = 0; virtual status_t Rewind(void *cookie) = 0; virtual status_t AddNode(Node *node); }; /** The console based nodes don't need cookies for I/O, they * also don't support to change the stream position. * Live is simple in the boot loader :-) */ class ConsoleNode : public Node { public: ConsoleNode(); virtual ssize_t Read(void *buffer, size_t bufferSize); virtual ssize_t Write(const void *buffer, size_t bufferSize); }; /** The root file system */ extern Directory *gRoot; extern "C" { #endif /* __cplusplus */ extern status_t vfs_init(stage2_args *args); extern status_t mount_boot_file_systems(); extern status_t add_partitions_for(int fd); #ifdef __cplusplus // this function is only available in C++ extern int open_node(Node *node, int mode); extern int open_from(Directory *directory, const char *path, int mode); } #endif #endif /* KERNEL_BOOT_VFS_H */