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#include "../defs.h"
#include "../inode.h"
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include <sys/stat.h>
struct PACKED superblock {
uint16_t magic;
uint32_t free_size;
uint32_t max_size;
};
int main(int argc, char *argv[])
{
char *fs = NULL;
int fd = 0;
struct superblock *sb= NULL;
inode *rootdir = NULL;
#ifdef _HAS_TRACKED_INODE
direntry *dentry = NULL;
#endif
if (argc != 2){
printf("Uso: %s [file]\n"
"Necesita proveer un nombre para el filesystem",
argv[0]);
return -2;
}
fd = open(argv[1], O_WRONLY | O_CREAT, 0777);
fs = calloc (BLOCKS*BLOCK_SIZE, sizeof(char));
if (!fs){
fprintf(stderr, "No hay suficiente memoria para alocar el filesystem\n");
return (1);
}
sb = (struct superblock *) fs;
sb->magic = 0xF514; /* No hay ganas de hacer aritmetica con lo que esta en el defs.h */
sb->max_size = BLOCK_SIZE * BLOCKPOOL_BLOCKS;
sb->free_size = BLOCK_SIZE * BLOCKPOOL_BLOCKS;
SET_BIT_1((char *)sb + FBB_OFFSET, 0);
/* El primer elemento del inodepool es el rootdir */
SET_BIT_1((char*) sb + FIB_OFFSET, 1);
rootdir = (inode *) sb + INODEPOOL_OFFSET + sizeof(inode);
rootdir->type = I_DIR;
rootdir->mode = S_IRUSR | S_IWUSR | S_IXUSR | S_IXGRP | S_IRGRP | S_IROTH | S_IXOTH | S_IFDIR;
rootdir->uid = getuid();
rootdir->gid = getgid();
rootdir->indirect=2;
rootdir->atime = (uint32_t) time(NULL);
rootdir->ctime = (uint32_t) time(NULL);
rootdir->mtime = (uint32_t) time(NULL);
rootdir->nlinks = 1;
#ifndef _HAS_TRACKED_INODE
rootdir->size = 0;
#else
rootdir->size = sizeof(direntry);
/* Primer bloque */
/*SET_BIT_1((char *)sb + FBB_OFFSET, 0); */
dentry = (direntry *) sb + BLOCKPOOL_OFFSET;
dentry->inode = 0;
dentry->name[0] = '/';
dentry->name[1] = '\0';
dentry->symlink = 0;
#endif
if ((write(fd, (void *) fs, BLOCKS*BLOCK_SIZE)) == -1){
perror("write");
close(fd);
return -1;
}
close(fd);
free(fs);
return (0);
}
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