mirror of
https://github.com/radareorg/radare2.git
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145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
#include <grub/file.h>
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#include <grub/disk.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#define IMGFILE "/tmp/test.fs.img"
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extern struct grub_fs grub_ext2_fs;
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grub_err_t read_foo (struct grub_disk *disk, grub_disk_addr_t sector, grub_size_t size, char *buf) {
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// printf ("==> DISK %x\n", disk);
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// printf ("==> OFFSET %x\n", offset);
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// printf ("[foo]==> Reading hook %x %x\n", sector, size);
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// printf ("==> land: %p\n", buf);
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size=512;
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{
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FILE *fd = fopen (IMGFILE, "rb");
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if (fd) {
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fseek (fd, (512*sector), SEEK_SET);
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fread (buf, 1, size, fd);
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// printf ("\nBUF: %x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
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fclose (fd);
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} else printf ("Cannot open "IMGFILE"\n");
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}
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return 0;
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}
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void read_hook (grub_disk_addr_t sector, unsigned long offset, unsigned long length, unsigned char *buf) {
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// printf ("[hook]==> Reading hook sector=%x offset=%x %x\n", sector, offset, length);
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// printf ("[hook]==> last %p\n", buf);
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{
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int size=length;
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FILE *fd = fopen(IMGFILE, "rb");
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if (fd) {
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fseek (fd, (512*sector)+offset, SEEK_SET);
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fread (buf, 1, size, fd);
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// write (1, buf, size);
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// printf ("BUF: %x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
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fclose (fd);
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} else printf ("Cannot open "IMGFILE"\n");
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}
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}
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grub_file_t openimage(grub_fs_t fs, const char *str) {
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grub_file_t file = malloc (1024);
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file->device = malloc (1024);
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memset (file->device, 0, 1024);
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file->device->disk = malloc (1024);
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memset (file->device->disk, 0, 1024);
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//file->device->disk->name = "disk0"; //strdup ("disk0");
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file->device->disk->dev = (grub_disk_dev_t)file->device;
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//file->device->disk->dev->read = read_hook; //file->device;
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file->device->disk->dev->read = read_foo; //file->device;
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//file->device->disk->read_hook = read_hook; //read_hook;
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//file->device->read = read_hook;
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//file->read_hook = read_hook;
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//&device; // HACK to avoid segfault
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file->fs = fs;
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#if 0
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file->offset = 0;
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file->size = 12190208;
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file->data = malloc (file->size);
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{
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FILE *fd = fopen(IMGFILE, "rb");
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if (fd == NULL) {
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printf ("Cannot open fs image\n");
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return NULL;
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}
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fread (file->data, file->size, 1, fd);
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fclose (fd);
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}
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#endif
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return file;
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}
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int dirhook (const char *filename, const struct grub_dirhook_info *info, void *closure) {
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//info->mtimeset
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//info->case_insensitive
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printf ("DIRFILE: %c (%d) %s\n", info->dir?'d':'f',
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info->mtime, filename);
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return 0;
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}
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int do_main() {
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struct grub_file *file;
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struct grub_fs *e2;
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grub_err_t err;
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e2 = &grub_ext2_fs;
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file = openimage (e2, IMGFILE);
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if (file == NULL) {
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printf ("oops\n");
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return 0;
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}
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err = e2->open (file, "/test");
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if (err == 0) {
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char buf[1024];
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err = e2->read (file, buf, file->size);
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//file->read_hook (2, 0, 0);
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write (1, buf, file->size);
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e2->close (file);
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// Root directory list
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err = e2->dir (file->device, "/", dirhook, 0);
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if (err != 0)
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grub_print_error ();
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} else {
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grub_print_error ();
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printf ("error is : %d\n", err);
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return 0;
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}
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return 1;
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}
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#include "grubfs.h"
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int foo_main() {
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char buf[1024];
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GrubFS *gfs = grubfs_new (&grub_ext2_fs, NULL);
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gfs->file->fs->open (gfs->file, "/test");
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gfs->file->fs->read (gfs->file, buf, gfs->file->size);
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printf ("fs = %d\n", (int)gfs->file->size);
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write (1, buf, gfs->file->size);
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gfs->file->fs->close (gfs->file);
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gfs->file->fs->dir (gfs->file->device, "/", dirhook, 0);
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grubfs_free (gfs);
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return 0;
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}
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int main(int argc, char **argv) {
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if (argc>1) {
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printf ("grubfs api\n");
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return foo_main ();
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}
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printf ("grub internal api\n");
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if (do_main()) {
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printf ("\n** worked!\n");
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} else {
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printf ("\n** failed!\n");
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}
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return 0;
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}
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