/*
* Initialize the fileops module for the specified disk.
*/
void *
Fileops_init(char *diskpath)
{
memset(openFileTable, 0, sizeof(openFileTable));
int fd = diskimg_open(diskpath, 1);
if (fd < 0) {
fprintf(stderr, "Can't open diskimagePath %s\n", diskpath);
return NULL;
}
unixfs = unixfilesystem_init(fd);
if (unixfs == NULL) {
diskimg_close(fd);
return NULL;
}
return unixfs;
}
int
main(int argc, char *argv[])
{
int opt;
while ((opt = getopt(argc, argv, "iqpr:")) != -1) {
switch (opt) {
case 'q':
quietFlag = 1;
break;
case 'i':
idumpFlag = 1;
break;
case 'p':
pdumpFlag = 1;
break;
case 'r':
removeFlag = optarg;
break;
default:
PrintUsageAndExit(argv[0]);
}
}
if (optind != argc-1) {
PrintUsageAndExit(argv[0]);
}
char *diskpath = argv[optind];
int fd = diskimg_open(diskpath, (removeFlag == NULL));
if (fd < 0) {
fprintf(stderr, "Can't open diskimagePath %s\n", diskpath);
exit(EXIT_FAILURE);
}
struct unixfilesystem *fs = unixfilesystem_init(fd);
if (!fs) {
fprintf(stderr, "Failed to initialize unix filesystem\n");
exit(EXIT_FAILURE);
}
if (!quietFlag) {
int disksize = diskimg_getsize(fd);
if (disksize < 0) {
fprintf(stderr, "Error getting the size of %s\n", argv[1]);
// Cast the result of diskimg_close to void so the compiler doesn't
// complain that we're ignoring its return value.
(void) diskimg_close(fd);
free(fs);
exit(EXIT_FAILURE);
}
printf("Disk %s is %d bytes (%d KB)\n", argv[1], disksize, disksize/1024);
printf("Superblock s_isize %d\n",(int)fs->superblock.s_isize);
printf("Superblock s_fsize %d\n",(int)fs->superblock.s_fsize);
printf("Superblock s_nfree %d\n",(int)fs->superblock.s_nfree);
printf("Superblock s_ninode %d\n",(int)fs->superblock.s_ninode);
}
if (idumpFlag) {
DumpInodeChecksum(fs, stdout);
}
if (pdumpFlag) {
DumpPathnameChecksum(fs, stdout);
}
if (removeFlag) {
RemovePathname(fs, removeFlag);
}
int err = diskimg_close(fd);
if (err < 0) {
fprintf(stderr, "Error closing %s\n", argv[1]);
}
free(fs);
exit(EXIT_SUCCESS);
return 0;
}
