finished documentation, and deleted ramfs.c and ramfs.h, as both were nowhere near implemented.
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Galen Sagarin
parent
543766deb3
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c1fa3f27ea
3 changed files with 0 additions and 215 deletions
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@ -13,7 +13,3 @@ File system handling
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Tar file system implementation (uses USTar).
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- allows for file operations
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- notably, tar does not allow for writing
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## ramfs.c
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Unused
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@ -1,171 +0,0 @@
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#include <comus/fs.h>
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/*#include <lib.h>
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//#include <comus/tar.h>
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//#include <string.h>
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#include <comus/ramfs.h>
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#define NOERROR 0
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#define ERROR 1
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int ramfs_check_exists(const char *name) {
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for(int i = 0; i < numberOfFiles; i++) {
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if(memcmp(allTheFiles[i].name, name, strlen(allTheFiles[i].name)) == 0) {
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// found it
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return i;
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}
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}
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// doesn't exist
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return -1;
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}
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int ramfs_create(const char *name) {
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if(ramfs_check_exists(name) != -1) {
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// already exists
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return ERROR;
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}
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struct file *newFile;
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*newFile->name = name;
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newFile->size = 0;
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newFile->data = kalloc(MAX_FILE_SIZE);
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newFile = &allTheFiles[numberOfFiles];
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}
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int ramfs_delete(const char *name) {
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int i = ramfs_check_exists(name);
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if(i >= 0) {
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kfree(allTheFiles[i].data);
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for(int j = i; j < numberOfFiles; j++) {
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allTheFiles[j] = allTheFiles[j+1];
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numberOfFiles -= 1;
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}
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return NOERROR;
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}
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return ERROR;
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}
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int ramfs_read(const char *name, char *buffer, size_t len) {
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int i = ramfs_check_exists(name);
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if(i >= 0) {
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memcpy(buffer, allTheFiles[i].data, len);
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return NOERROR;
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}
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return ERROR;
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}
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int ramfs_write(const char *name, char *buffer) {
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int i = ramfs_check_exists(name);
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if(i >= 0) {
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memcpy(buffer)
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}
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}
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// here we return the index of the file as well.
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*int ramfs_find_file(root *r, const char *fullpath, const char *name, file *out, directory *outDirectory) {
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directory *location = r->root;
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if(ramfs_find_directory(r, fullpath, name, location) == NOERROR) {
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for(int i = 0; i < location->file_count; i++) {
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if(strcmp(location->files[i]->name, name) == 0) {
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outDirectory = location;
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out = location->files[i];
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return i;
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}
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}
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}
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return -1;
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}
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int ramfs_find_directory(root *r, const char *fullpath, const char *name, directory *out) {
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directory *location = r->root;
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char *path = fullpath;
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char *tempPath = strtok(tempPath, "/");
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while(tempPath != NULL) {
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bool wasItFound = false;
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for(int i = 0; i < location->directory_count; i++) {
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if(strcmp(location->directories[i]->name, tempPath) == 0) {
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// yay we found it;
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location = location->directories[i];
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wasItFound = true;
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break;
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}
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}
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if(!wasItFound) {
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return ERROR;
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}
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tempPath = strtok(NULL, "/");
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}
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out = location;
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return NOERROR;
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}
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int ramfs_create_file(root *r, const char *fullpath, const char *name) {
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// trace through the path
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// struct ramfs_directory *location = r->root;
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directory *location = r->root;
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if(ramfs_find_directory(r, fullpath, name, location) == NOERROR) {
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if(location->file_count >= MAX_FILES) {
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return ERROR;
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}
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file *newFile = malloc(sizeof(file));
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strcpy(newFile->name, name);
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newFile->size = 0;
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newFile->data = malloc(MAX_FILE_SIZE);
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location->files[location->file_count] = newFile;
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location->file_count += 1;
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return NOERROR;
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}
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return ERROR;
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}
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int ramfs_delete_file(root *r, const char *fullpath, const char *name) {
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directory *location;
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if(ramfs_find_directory(r, fullpath, name, location) == NOERROR) {
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file *find_file;
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int file_index = ramfs_find_file(r, fullpath, name, find_file, location) >= 0;
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if(file_index >= 0) {
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free(location->files[file_index]->data);
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free(location->files[file_index]);
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for(int i = file_index + 1; i < location->file_count; i++) {
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location->files[i-1] = location->files[i];
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//memcpy(location->files[i-1], location->files[i], location->files[i]->size);
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//free(location->files[i]);
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}
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location->file_count -= 1;
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return NOERROR;
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}
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return ERROR;
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}
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return ERROR;
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}
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int ramfs_create_directory() {
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}
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int ramfs_delete_directory() {
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}
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int ramfs_write() {
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}
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root *ramfs_init() {
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root *r = malloc(sizeof(root));
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r->root = malloc(sizeof(directory));
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strcpy(r->root->name, "/");
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r->root->file_count = 0;
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r->root->directory_count = 0;
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return r;
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}
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*/
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@ -1,40 +0,0 @@
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/*#include <comus/fs.h>
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#ifndef RAMFS_H_
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#define RAMFS_H_
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#define MAX_FILES 32
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#define MAX_FILE_SIZE 4096
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struct file {
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char name[32];
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size_t size;
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char *data;
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} file;
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struct file allTheFiles[MAX_FILES];
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int numberOfFiles = 0;
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#endif
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/*
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typedef struct ramfs_file {
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char name[32];
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int size;
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char *data;
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} file;
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typedef struct ramfs_directory {
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char name[32];
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file *files[MAX_FILES];
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directory *directories[MAX_FILES];
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int file_count;
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int directory_count;
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} directory;
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typedef struct ramfs_root {
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directory *root;
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} root;
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//struct file allTheFiles[MAX_FILES];
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int numberOfFiles = 0;
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#endif*/
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