/**
* Create a new, regular, and empty file under directory 'parent'.
*/
void ext2_create(fs_node_t *parent, char *name, uint16_t permission) {
kprintf("[kernel/ext2] Creating file.\n");
uint16_t mode = permission | EXT2_S_IFREG;
ext2_inodetable_t *parent_inode = ext2_disk_inode(parent->inode);
// Check to make sure no same name in the parent dir
fs_node_t *b_exist = finddir_ext2_disk(parent, name);
if (b_exist) {
kprintf("[kernel/ext2] %s: Already exists\n", name);
free(b_exist);
free(parent_inode);
return;
}
free(b_exist);
// Create the inode under 'parent'
uint32_t inode_no;
ext2_inodetable_t *inode = ext2_disk_alloc_inode(parent_inode, parent->inode, name, mode, &inode_no);
free(parent_inode);
if (inode == NULL) {
kprintf("[kernel/ext2] Failed to create file '%s' (inode allocation failed)?\n", name);
return;
}
free(inode);
}
/**
* Make a new directory. 'name' consists the name for the new directory
* to be created using 'permission' under 'parent' directory.
* Message will be displayed in the terminal for success or failure.
*/
void ext2_mkdir(fs_node_t *parent, char *name, uint16_t permission) {
uint16_t mode = permission | EXT2_S_IFDIR;
ext2_inodetable_t *parent_inode = ext2_disk_inode(parent->inode);
// Check to make sure no same name in the parent dir
fs_node_t *b_exist = finddir_ext2_disk(parent, name);
if (b_exist) {
kprintf("mkdir: %s: Already exists\n", name);
free(b_exist);
free(parent_inode);
return;
}
free(b_exist);
// Create the inode under 'parent'
uint32_t inode_no;
ext2_inodetable_t *inode = ext2_disk_alloc_inode(parent_inode, parent->inode, name, mode, &inode_no);
free(parent_inode);
if (inode == NULL) {
kprintf("mkdir: %s: Cannot be created\n", name);
return;
}
// Init this newly created dir, put '.' and '..' into it.
// Here we pass in 0 as the inode number for '.' and '..' because the
// 'cd' command can handle them correctly, so it does not matter.
insertdir_ext2_disk(inode, inode_no, 0, ".", 2);
insertdir_ext2_disk(inode, inode_no, 0, "..", 2);
free(inode);
}
/**
* Create a new, regular, and empty file under directory 'parent'.
*/
void ext2_create(fs_node_t *parent, char *name, uint16_t permission) {
debug_print(NOTICE, "Creating file %s", name);
uint16_t mode = permission | EXT2_S_IFREG;
ext2_inodetable_t *parent_inode = ext2_disk_inode(parent->inode);
// Check to make sure no same name in the parent dir
fs_node_t *b_exist = finddir_ext2_disk(parent, name);
if (b_exist) {
debug_print(WARNING, "File already exists!");
free(b_exist);
free(parent_inode);
return;
}
free(b_exist);
// Create the inode under 'parent'
uint32_t inode_no;
ext2_inodetable_t *inode = ext2_disk_alloc_inode(parent_inode, parent->inode, name, mode, &inode_no);
free(parent_inode);
if (inode == NULL) {
debug_print(ERROR, "Failed to create file (inode allocation failed)");
return;
}
free(inode);
}