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#include "rootfs.h"
#include "alloc.h"
static BOOL rootfs_open(File *node, uint32 flags);
static void rootfs_close(File *file);
static FileSystemNode *rootfs_finddir(FileSystemNode *node, char *name);
static struct FileSystemDirent *rootfs_readdir(FileSystemNode *node, uint32 index);
static BOOL rootfs_mkdir(FileSystemNode *node, const char *name, uint32 flags);
FileSystemNode* initializeRootFS() {
FileSystemNode* root = (FileSystemNode*)kmalloc(sizeof(FileSystemNode));
memset((uint8*)root, 0, sizeof(FileSystemNode));
root->nodeType = FT_Directory;
root->open = rootfs_open;
root->close = rootfs_close;
root->readdir = rootfs_readdir;
root->finddir = rootfs_finddir;
root->mkdir = rootfs_mkdir;
return root;
}
static FileSystemDirent gDirent;
static BOOL rootfs_open(File *node, uint32 flags) {
return TRUE;
}
static void rootfs_close(File *file) {
}
static struct FileSystemDirent *rootfs_readdir(FileSystemNode *node, uint32 index) {
FileSystemNode *n = node->firstChild;
uint32 i = 0;
while (NULL != n) {
if (index == i) {
gDirent.fileType = n->nodeType;
gDirent.inode = n->inode;
strcpy(gDirent.name, n->name);
return &gDirent;
}
n = n->nextSibling;
++i;
}
return NULL;
}
static FileSystemNode *rootfs_finddir(FileSystemNode *node, char *name) {
FileSystemNode *n = node->firstChild;
while (NULL != n) {
if (strcmp(name, n->name) == 0) {
return n;
}
n = n->nextSibling;
}
return NULL;
}
static BOOL rootfs_mkdir(FileSystemNode *node, const char *name, uint32 flags) {
FileSystemNode *n = node->firstChild;
while (NULL != n) {
if (strcmp(name, n->name) == 0) {
return FALSE;
}
n = n->nextSibling;
}
FileSystemNode* newNode = (FileSystemNode*)kmalloc(sizeof(FileSystemNode));
memset((uint8*)newNode, 0, sizeof(FileSystemNode));
strcpy(newNode->name, name);
newNode->nodeType = FT_Directory;
newNode->open = rootfs_open;
newNode->close = rootfs_close;
newNode->readdir = rootfs_readdir;
newNode->finddir = rootfs_finddir;
newNode->mkdir = rootfs_mkdir;
newNode->parent = node;
if (node->firstChild == NULL) {
node->firstChild = newNode;
}
else {
FileSystemNode *n = node->firstChild;
while (NULL != n->nextSibling) {
n = n->nextSibling;
}
n->nextSibling = newNode;
}
return TRUE;
}
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