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