/*
* Finds and mounts an existing Rocks Partition, if one exists.
* Returns 0 on success, 1 otherwise. Mounts to a well-known dir.
*/
static int
getRocksPartition()
{
int rc=1;
int major, minor, blocks;
char dev[32];
char *diskdevice;
char *line;
char *contents;
contents = getPartitions();
diskdevice = NULL;
/*
* eat the first two lines
*
* there is a two line header on the output of
* /proc/partitions -- toss those lines, then do
* the work
*/
line = contents;
line = strstr(line, "\n") + 1;
while (1) {
line = strstr(line, "\n");
if (!line)
break;
line += 1;
if (!strlen(line))
continue;
sscanf(line, "%d %d %d %32s", &major, &minor, &blocks, dev);
if (!diskdevice ||
strncmp(dev, diskdevice, strlen(diskdevice))) {
/* A disk device name, like hda */
diskdevice = dev;
logMessage(INFO, "ROCKS:found disk device %s", dev);
rc = bootable(diskdevice, major, minor);
if (!rc) {
/* Restart the parse */
free(contents);
return getRocksPartition();
}
}
else if (!strncmp(dev, diskdevice, strlen(diskdevice))) {
/* A disk partition name, like hda1 */
logMessage(INFO, "ROCKS:found partition %s", dev);
rc = mountRocksDisk(dev, major, minor);
if (!rc)
break; /* Success */
}
}
free(contents);
return rc;
}
/*
* Like getRocksPartition() but for USB disks.
* Returns 0 on success, 1 otherwise. Mounts to a well-known dir.
*/
static int
getRocksUSB()
{
int rc=1;
int major, minor, blocks;
char dev[32];
char *diskdevice;
char *line;
char *contents;
contents = getPartitions();
diskdevice = NULL;
/*
* eat the first two lines
*
* there is a two line header on the output of
* /proc/partitions -- toss those lines, then do
* the work
*/
line = contents;
line = strstr(line, "\n") + 1;
while (1) {
line = strstr(line, "\n");
if (!line)
break;
line += 1;
if (!strlen(line))
continue;
sscanf(line, "%d %d %d %32s", &major, &minor, &blocks, dev);
logMessage(INFO,
"ROCKS:searching for USB keys on device %s", dev);
rc = mountRocksUSB(dev, major, minor);
if (!rc)
break; /* Success */
}
free(contents);
return rc;
}
int main ()
{
int rc; /* Return code */
int fd; /* Device descriptor */
int sector; /* IN: sector to read */
struct partition partitions[16];
struct ext2_group_desc groupdescriptors[32];
struct ext2_inode inode;
struct ext2_super_block superblock;
int block_size;
int dir_in_location;
int partition_start;
int start = 446;
int inode_num;
int dir_count;
int gd_count;
int partition_count;
/* Open the device */
fd = open ( "disk", O_RDWR );
if ( fd == -1 )
{
perror ( "Could not open device file" );
exit(-1);
}
/* Read the partitions */
partition_count = getPartitions(fd, partitions);
partition_start = partitions[0].start_sect;
/* Read the Superblock */
superblock = readSuperBlock(fd, partition_start);
if (superblock.s_magic == EXT2_SUPER_MAGIC)
{ printf("\nSuperblock Magic Number: %x (Correct)", superblock.s_magic); }
else
{ printf("\nSuperblock Magic Number: %x (Incorrect)", superblock.s_magic); }
block_size = pow(2, superblock.s_log_block_size) * 1024;
printf("\nBlock Size: %d\n", block_size);
/* Read the group descriptors */
gd_count = getGroupDescriptors(fd, partition_start, groupdescriptors);
/* Read the root inode */
inode_num = 2;
inode = getInode(fd, inode_num, groupdescriptors, partition_start, superblock.s_inodes_per_group);
printf("\nRoot Inode File Mode: ");
printFileMode(inode.i_mode);
/* See if root inode is allocated */
if (checkAllocation(fd, 1, inode_num, groupdescriptors, partition_start, superblock.s_blocks_per_group, superblock.s_inodes_per_group) == 1)
{ printf("\nInode Allocated\n"); }
else
{ printf("\nInode Not Allocated\n"); }
/* Read the data for root inode */
printf("\nRoot Inode Directory Data...");
dir_in_location = partition_start + (inode.i_block[0] * 2);
dir_count = printDirs(fd, dir_in_location);
/* Read the oz inode */
inode_num = 28;
inode = getInode(fd, inode_num, groupdescriptors, partition_start, superblock.s_inodes_per_group);
/* Read the data for oz inode */
printf("\n\nOz Directory Data...");
dir_in_location = partition_start + (inode.i_block[0] * 2);
dir_count = printDirs(fd, dir_in_location);
/* Read the ohmy.txt inode */
inode_num = 4021;
inode = getInode(fd, inode_num, groupdescriptors, partition_start, superblock.s_inodes_per_group);
printf("\n\nohmy.txt Inode Data Blocks: %d", inode.i_blocks);
/* See if ohmy.txt's blocks are allocated */
if (checkBlockAllocation(fd, inode.i_block, groupdescriptors, partition_start, superblock.s_blocks_per_group, superblock.s_inodes_per_group) == 1)
{ printf("\nAll Blocks Allocated"); }
else
{ printf("\nNot All Blocks Allocated"); }
/* Read the glinda inode */
inode_num = 30;
inode = getInode(fd, inode_num, groupdescriptors, partition_start, superblock.s_inodes_per_group);
printf("\n\nglinda Inode File Mode: ");
printFileMode(inode.i_mode);
printf("\nglinda Link: ");
printFastSymbolic(fd, inode_num, inode.i_size, groupdescriptors, partition_start, superblock.s_inodes_per_group);
close(fd);
return 0;
}
