X-Git-Url: https://git.ucc.asn.au/?p=tpg%2Facess2.git;a=blobdiff_plain;f=KernelLand%2FKernel%2Finclude%2Fmemfs_helpers.h;fp=KernelLand%2FKernel%2Finclude%2Fmemfs_helpers.h;h=c20e1704bae3504e55482097dea9418d4000b308;hp=0000000000000000000000000000000000000000;hb=845b6f9d90bb87b5e760e4d49aa93b0e003ab750;hpb=67a7fe2bb79eceaf10c572a99bd8345c4e81cf5b

diff --git a/KernelLand/Kernel/include/memfs_helpers.h b/KernelLand/Kernel/include/memfs_helpers.h
new file mode 100644
index 00000000..c20e1704
--- /dev/null
+++ b/KernelLand/Kernel/include/memfs_helpers.h
@@ -0,0 +1,56 @@
+/*
+ * Acess2 Kernel
+ * - By John Hodge (thePowersGang)
+ *
+ * memfs_helpers.h
+ * - Helpers for in-memory filesystems
+ *
+ * Provides name lookup, iteration, and node insertion
+ */
+#ifndef _MEMFS_HELPERS_H_
+#define _MEMFS_HELPERS_H_
+
+#include <vfs.h>
+
+typedef struct sMemFS_FileHdr	tMemFS_FileHdr;
+typedef struct sMemFS_DirHdr	tMemFS_DirHdr;
+
+extern void	MemFS_InitDir (tMemFS_DirHdr  *Dir);
+extern void	MemFS_InitFile(tMemFS_FileHdr *File);
+
+/*
+ * \brief Fetch the name of the file at the specified position
+ * \return standard tVFS_NodeType.ReadDir return values
+ */
+extern int	MemFS_ReadDir(tMemFS_DirHdr *Dir, int Pos, char Name[FILENAME_MAX]);
+/*
+ * \brief Look up a file in a directory
+ */
+extern tMemFS_FileHdr	*MemFS_FindDir(tMemFS_DirHdr *Dir, const char *Name);
+/**
+ * \brief Remove a named file from a directory
+ * \return File header for \a Name, or NULL if not found
+ */
+extern tMemFS_FileHdr	*MemFS_Remove(tMemFS_DirHdr *Dir, const char *Name);
+/**
+ * \brief Insert a pre-constructed file header into the directory
+ * \param Dir	Directory
+ * \return false if name already exists
+ */
+extern bool	MemFS_Insert(tMemFS_DirHdr *Dir, tMemFS_FileHdr *File);
+
+struct sMemFS_FileHdr
+{
+	tMemFS_FileHdr	*Next;
+	const char	*Name;
+};
+
+struct sMemFS_DirHdr
+{
+	tMemFS_FileHdr	FileHdr;
+	//tRWLock	Lock;
+	tMemFS_FileHdr	*FirstChild;
+};
+
+#endif
+