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Implement file seek

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This commit is contained in:
Alex
2023-05-05 19:19:05 +03:00
parent b0e0415b3e
commit 50a0857524
5 changed files with 92 additions and 4 deletions
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8
include/filesystem.hpp
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@ -26,6 +26,10 @@ namespace VirtualFileSystem
{
#define FILENAME_LENGTH 256
#define SEEK_SET 0
#define SEEK_CUR 1
#define SEEK_END 2
struct Node;
typedef size_t (*OperationMount)(const char *, unsigned long, const void *);
@ -37,6 +41,7 @@ namespace VirtualFileSystem
typedef size_t (*OperationSync)(void);
typedef void (*OperationCreate)(Node *node, char *Name, uint16_t NameLength);
typedef void (*OperationMkdir)(Node *node, char *Name, uint16_t NameLength);
typedef size_t (*OperationSeek)(Node *node, size_t Offset, uint8_t Whence);
#define MountFSFunction(name) size_t name(const char *unknown0, unsigned long unknown1, const uint8_t *unknown2)
#define UMountFSFunction(name) size_t name(int unknown0)
@ -48,6 +53,7 @@ namespace VirtualFileSystem
#define SyncFSFunction(name) size_t name(void)
#define CreateFSFunction(name) void name(VirtualFileSystem::Node *node, char *Name, uint16_t NameLength)
#define MkdirFSFunction(name) void name(VirtualFileSystem::Node *node, char *Name, uint16_t NameLength)
#define SeekFSFunction(name) size_t name(VirtualFileSystem::Node *node, size_t Offset, uint8_t Whence)
enum FileStatus
{
@ -101,6 +107,7 @@ namespace VirtualFileSystem
OperationClose Close = nullptr;
OperationCreate Create = nullptr;
OperationMkdir MakeDirectory = nullptr;
OperationSeek Seek = nullptr;
};
struct Node
@ -113,6 +120,7 @@ namespace VirtualFileSystem
uint64_t UserIdentifier = 0, GroupIdentifier = 0;
uintptr_t Address = 0;
size_t Length = 0;
uint64_t Offset = 0;
Node *Parent = nullptr;
FileSystemOperations *Operator = nullptr;
/* For root node: