static int printf_loopdev(struct loopdev_cxt *lc)
{
uint64_t x;
dev_t dev = 0;
ino_t ino = 0;
char *fname = NULL;
uint32_t type;
fname = loopcxt_get_backing_file(lc);
if (!fname)
return -EINVAL;
if (loopcxt_get_backing_devno(lc, &dev) == 0)
loopcxt_get_backing_inode(lc, &ino);
if (!dev && !ino) {
/*
* Probably non-root user (no permissions to
* call LOOP_GET_STATUS ioctls).
*/
printf("%s: []: (%s)",
loopcxt_get_device(lc), fname);
if (loopcxt_get_offset(lc, &x) == 0 && x)
printf(_(", offset %ju"), x);
if (loopcxt_get_sizelimit(lc, &x) == 0 && x)
printf(_(", sizelimit %ju"), x);
printf("\n");
return 0;
}
printf("%s: [%04d]:%" PRIu64 " (%s)",
loopcxt_get_device(lc), (int) dev, ino, fname);
if (loopcxt_get_offset(lc, &x) == 0 && x)
printf(_(", offset %ju"), x);
if (loopcxt_get_sizelimit(lc, &x) == 0 && x)
printf(_(", sizelimit %ju"), x);
if (loopcxt_get_encrypt_type(lc, &type) == 0) {
const char *e = loopcxt_get_crypt_name(lc);
if ((!e || !*e) && type == 1)
e = "XOR";
if (e && *e)
printf(_(", encryption %s (type %u)"), e, type);
}
printf("\n");
return 0;
}
static void test_loop_info(const char *device, int flags, int debug)
{
struct loopdev_cxt lc;
char *p;
uint64_t u64;
loopcxt_init(&lc, flags);
loopcxt_enable_debug(&lc, debug);
if (loopcxt_set_device(&lc, device))
err(EXIT_FAILURE, "failed to set device");
p = loopcxt_get_backing_file(&lc);
printf("\tBACKING FILE: %s\n", p);
free(p);
if (loopcxt_get_offset(&lc, &u64) == 0)
printf("\tOFFSET: %jd\n", u64);
if (loopcxt_get_sizelimit(&lc, &u64) == 0)
printf("\tSIZE LIMIT: %jd\n", u64);
printf("\tAUTOCLEAR: %s\n", loopcxt_is_autoclear(&lc) ? "YES" : "NOT");
loopcxt_deinit(&lc);
}
