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Added initial support for file systems. Not tested yet, but compiles.

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New Directory class for use in file systems; file systems need to publish
their root directory as a subclass of this class.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4587 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2003-09-09 02:12:06 +00:00
parent 275186b598
commit fd5b59d227
2 changed files with 52 additions and 5 deletions
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headers/private/kernel/boot/vfs.h
+27 -1
View File
@@ -8,7 +8,7 @@
#include <SupportDefs.h>
#include <list.h>
#include <util/list.h>
#include <boot/stage2_args.h>
@@ -27,12 +27,36 @@ class Node {
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 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 :-)
@@ -46,6 +70,7 @@ class ConsoleNode : public Node {
virtual ssize_t Write(const void *buffer, size_t bufferSize);
};
extern Directory *gRoot;
extern "C" {
#endif /* __cplusplus */
@@ -53,6 +78,7 @@ extern "C" {
extern status_t vfs_init(stage2_args *args);
extern status_t mount_boot_file_systems();
extern status_t add_partitions_for(int fd);
extern int open_node(Node *node, int mode);
#ifdef __cplusplus
}