int
volume_is_reusable(
const char *label)
{
tape_t *tp = lookup_tapelabel(label);
return reusable_tape(tp);
}
/* This function checks the label of a single tape, which may or may not
* have been loaded by the changer. With the addition of char *dev, and *slot,
* it has the same interface as taper_scan. slot should be the slot where
* this tape is found, or NULL if no changer is in use.
* Return value is the same as taper_scan.
*/
int scan_read_label(
char *dev,
char *slot,
char *desired_label,
char** label,
char** timestamp,
char** error_message)
{
Device * device;
char *labelstr;
DeviceStatusFlags device_status;
char *new_label_errmsg;
g_return_val_if_fail(dev != NULL, -1);
if (*error_message == NULL)
*error_message = stralloc("");
*label = *timestamp = NULL;
device = device_open(dev);
g_assert(device != NULL);
if (device->status != DEVICE_STATUS_SUCCESS ) {
*error_message = newvstrallocf(*error_message,
_("%sError opening device %s: %s.\n"),
*error_message, dev,
device_error_or_status(device));
g_object_unref(device);
amfree(*timestamp);
amfree(*label);
return -1;
}
if (!device_configure(device, TRUE)) {
*error_message = newvstrallocf(*error_message,
_("%sError configuring device %s: %s.\n"),
*error_message, dev,
device_error_or_status(device));
g_object_unref(device);
amfree(*timestamp);
amfree(*label);
return -1;
}
device_status = device_read_label(device);
if (device_status == DEVICE_STATUS_SUCCESS && device->volume_label != NULL) {
*label = g_strdup(device->volume_label);
*timestamp = strdup(device->volume_time);
} else if (device_status & DEVICE_STATUS_VOLUME_UNLABELED) {
if (!getconf_seen(CNF_LABEL_NEW_TAPES)) {
*error_message = newvstrallocf(*error_message,
_("%sFound an empty or non-amanda tape.\n"),
*error_message);
g_object_unref(device);
return -1;
}
/* If we got a header, but the Device doesn't think it's labeled, then this
* tape probably has some data on it, so refuse to automatically label it */
if (device->volume_header && device->volume_header->type != F_EMPTY) {
*error_message = newvstrallocf(*error_message,
_("%sFound a non-amanda tape; check and relabel it with 'amlabel -f'\n"),
*error_message);
g_object_unref(device);
return -1;
}
g_object_unref(device);
*label = find_brand_new_tape_label(&new_label_errmsg);
if (*label != NULL) {
*timestamp = stralloc("X");
*error_message = newvstrallocf(*error_message,
_("%sFound an empty tape, will label it `%s'.\n"),
*error_message, *label);
return 3;
}
*error_message = newvstrallocf(*error_message,
_("%s%s.\n"),
*error_message, new_label_errmsg);
return -1;
} else {
char * label_errstr;
label_errstr = g_strdup_printf(_("Error reading label: %s.\n"),
device_error_or_status(device));
*error_message = newvstralloc(*error_message, *error_message,
label_errstr, NULL);
g_free(label_errstr);
return -1;
}
g_assert(*label != NULL && *timestamp != NULL);
g_object_unref(device);
*error_message = newvstrallocf(*error_message,
_("%sread label `%s', date `%s'.\n"),
*error_message, *label, *timestamp);
/* Register this with the barcode database, even if its not ours. */
if (slot != NULL) {
changer_label(slot, *label);
}
if (desired_label != NULL && strcmp(*label, desired_label) == 0) {
/* Got desired label. */
return 1;
}
/* Is this actually an acceptable tape? */
labelstr = getconf_str(CNF_LABELSTR);
if(!match(labelstr, *label)) {
*error_message = newvstrallocf(*error_message,
_("%slabel \"%s\" doesn't match \"%s\".\n"),
*error_message, *label, labelstr);
return -1;
} else {
tape_t *tp;
if (strcmp(*timestamp, "X") == 0) {
/* new, labeled tape. */
return 1;
}
tp = lookup_tapelabel(*label);
if(tp == NULL) {
*error_message =
newvstrallocf(*error_message,
_("%slabel \"%s\" matches labelstr but it is"
" not listed in the tapelist file.\n"),
*error_message, *label);
return -1;
} else if(tp != NULL && !reusable_tape(tp)) {
*error_message =
newvstrallocf(*error_message,
_("%sTape with label %s is still active"
" and cannot be overwritten.\n"),
*error_message, *label);
return -1;
}
}
/* Yay! We got a good tape! */
return 2;
}
