int ffs_check(const char *path, off_t offset)
{
RAII(FILE*, file, fopen(path, "r"), fclose);
if (file == NULL) {
__error.errnum = -1;
snprintf(__error.errstr, sizeof __error.errstr,
"%s: %s : %s(%d) : %s (errno=%d)\n",
program_invocation_short_name, "errno",
__FILE__, __LINE__, strerror(errno), errno);
return -1;
}
int rc = __ffs_fcheck(file, offset);
if (rc < 0) {
err_t *err = err_get();
assert(err != NULL);
__error.errnum = err_code(err);
snprintf(__error.errstr, sizeof __error.errstr,
"%s: %s : %s(%d) : (code=%d) %.*s\n",
program_invocation_short_name,
err_type_name(err), err_file(err), err_line(err),
err_code(err), err_size(err), (char *)err_data(err));
// __ffs_check will return FFS_CHECK_* const's
}
return rc;
}
int check_file(const char * path, FILE * file, off_t offset) {
assert(file != NULL);
switch (__ffs_fcheck(file, offset)) {
case 0:
return 0;
case FFS_CHECK_HEADER_MAGIC:
UNEXPECTED("'%s' no partition table found at offset '%llx'\n",
path, (long long)offset);
return -1;
case FFS_CHECK_HEADER_CHECKSUM:
UNEXPECTED("'%s' partition table at offset '%llx', is "
"corrupted\n", path, (long long)offset);
return -1;
case FFS_CHECK_ENTRY_CHECKSUM:
UNEXPECTED("'%s' partition table at offset '%llx', has "
"corrupted entries\n", path, (long long)offset);
return -1;
default:
return -1;
}
}
