static int lowprobe_device(blkid_probe pr, const char *devname,
int chain, char *show[], int output,
blkid_loff_t offset, blkid_loff_t size)
{
const char *data;
const char *name;
int nvals = 0, n, num = 1;
size_t len;
int fd;
int rc = 0;
static int first = 1;
fd = open(devname, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "error: %s: %s\n", devname, strerror(errno));
return 2;
}
if (blkid_probe_set_device(pr, fd, offset, size))
goto done;
if (chain & LOWPROBE_TOPOLOGY)
rc = lowprobe_topology(pr);
if (rc >= 0 && (chain & LOWPROBE_SUPERBLOCKS))
rc = lowprobe_superblocks(pr);
if (rc < 0)
goto done;
nvals = blkid_probe_numof_values(pr);
if (nvals && !first && output & (OUTPUT_UDEV_LIST | OUTPUT_EXPORT_LIST))
/* add extra line between output from devices */
fputc('\n', stdout);
if (output & OUTPUT_DEVICE_ONLY) {
printf("%s\n", devname);
goto done;
}
for (n = 0; n < nvals; n++) {
if (blkid_probe_get_value(pr, n, &name, &data, &len))
continue;
if (show[0] && !has_item(show, name))
continue;
len = strnlen((char *) data, len);
print_value(output, num++, devname, (char *) data, name, len);
}
if (first)
first = 0;
if (nvals >= 1 && !(output & (OUTPUT_VALUE_ONLY |
OUTPUT_UDEV_LIST | OUTPUT_EXPORT_LIST)))
printf("\n");
done:
if (rc == -2) {
if (output & OUTPUT_UDEV_LIST)
print_udev_ambivalent(pr);
else
fprintf(stderr,
"%s: ambivalent result (probably more "
"filesystems on the device, use wipefs(8) "
"to see more details)\n",
devname);
}
close(fd);
return !nvals ? 2 : 0;
}
static int lowprobe_device(blkid_probe pr, const char *devname,
int chain, char *show[], int output,
blkid_loff_t offset, blkid_loff_t size)
{
const char *data;
const char *name;
int nvals = 0, n, num = 1;
size_t len;
int fd;
int rc = 0;
static int first = 1;
fd = open(devname, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "error: %s: %m\n", devname);
return 2;
}
if (blkid_probe_set_device(pr, fd, offset, size))
goto done;
if (chain & LOWPROBE_TOPOLOGY)
rc = lowprobe_topology(pr);
if (rc >= 0 && (chain & LOWPROBE_SUPERBLOCKS))
rc = lowprobe_superblocks(pr);
if (rc < 0)
goto done;
if (!rc)
nvals = blkid_probe_numof_values(pr);
if (nvals &&
!(chain & LOWPROBE_TOPOLOGY) &&
!(output & OUTPUT_UDEV_LIST) &&
!blkid_probe_has_value(pr, "TYPE") &&
!blkid_probe_has_value(pr, "PTTYPE"))
/*
* Ignore probing result if there is not any filesystem or
* partition table on the device and udev output is not
* requested.
*
* The udev db stores information about partitions, so
* PART_ENTRY_* values are alway important.
*/
nvals = 0;
if (nvals && !first && output & (OUTPUT_UDEV_LIST | OUTPUT_EXPORT_LIST))
/* add extra line between output from devices */
fputc('\n', stdout);
if (nvals && (output & OUTPUT_DEVICE_ONLY)) {
printf("%s\n", devname);
goto done;
}
for (n = 0; n < nvals; n++) {
if (blkid_probe_get_value(pr, n, &name, &data, &len))
continue;
if (show[0] && !has_item(show, name))
continue;
len = strnlen((char *) data, len);
print_value(output, num++, devname, (char *) data, name, len);
}
if (first)
first = 0;
if (nvals >= 1 && !(output & (OUTPUT_VALUE_ONLY |
OUTPUT_UDEV_LIST | OUTPUT_EXPORT_LIST)))
printf("\n");
done:
if (rc == -2) {
if (output & OUTPUT_UDEV_LIST)
print_udev_ambivalent(pr);
else
fprintf(stderr,
"%s: ambivalent result (probably more "
"filesystems on the device, use wipefs(8) "
"to see more details)\n",
devname);
}
close(fd);
if (rc == -2)
return 8; /* ambivalent probing result */
if (!nvals)
return 2; /* nothing detected */
return 0; /* sucess */
}
