return FALSE;
}
+static void
+update_tapelist(
+ taper_state_t *state)
+{
+ char *tapelist_name = NULL;
+ char *tapelist_name_old = NULL;
+
+ tapelist_name = config_dir_relative(getconf_str(CNF_TAPELIST));
+ if (state->cur_tape == 0) {
+ tapelist_name_old = stralloc2(tapelist_name, ".yesterday");
+ } else {
+ char cur_str[NUM_STR_SIZE];
+ g_snprintf(cur_str, SIZEOF(cur_str), "%d", state->cur_tape - 1);
+ tapelist_name_old = vstralloc(tapelist_name,
+ ".today.", cur_str, NULL);
+ }
+
+ if (write_tapelist(tapelist_name_old)) {
+ error("could not write tapelist: %s", strerror(errno));
+ /*NOTREACHED*/
+ }
+ amfree(tapelist_name_old);
+
+ remove_tapelabel(state->device->volume_label);
+ add_tapelabel(state->driver_start_time,
+ state->device->volume_label);
+ if (write_tapelist(tapelist_name)) {
+ error("could not write tapelist: %s", strerror(errno));
+ /*NOTREACHED*/
+ }
+ amfree(tapelist_name);
+}
+
/* Find and label a new tape, if one is not already open. Returns TRUE
* if a tape could be written. */
static gboolean find_and_label_new_tape(taper_state_t * state,
}
static gboolean label_new_tape(taper_state_t * state, dump_info_t * dump_info) {
- char *tapelist_name;
- char *tapelist_name_old;
- char * old_volume_name;
- char * old_volume_time;
+ char *old_volume_name = NULL;
+ char *old_volume_time = NULL;
+ tape_search_request_t request;
+ gboolean search_result;
+ ReadLabelStatusFlags status;
/* If we got here, it means that we have found a tape to label and
* have gotten permission from the driver to write it. But we
state->device = device_open(state->next_tape_device);
amfree(state->next_tape_device);
- if (state->device == NULL) {
- amfree(state->next_tape_label);
- return FALSE;
- }
-
+ if (state->device == NULL)
+ goto skip_volume;
+
device_set_startup_properties_from_config(state->device);
- device_read_label(state->device);
+
+ /* if we have an error, and are sure it isn't just an unlabeled volume,
+ * then skip this volume */
+ status = device_read_label(state->device);
+ if ((status & ~READ_LABEL_STATUS_VOLUME_UNLABELED) &&
+ !(status & READ_LABEL_STATUS_VOLUME_UNLABELED))
+ goto skip_volume;
+
old_volume_name = g_strdup(state->device->volume_label);
old_volume_time = g_strdup(state->device->volume_time);
-
+
if (!device_start(state->device, ACCESS_WRITE, state->next_tape_label,
state->driver_start_time)) {
gboolean tape_used;
+
/* Something broke, see if we can tell if the volume was erased or
* not. */
g_fprintf(stderr, "taper: Error writing label %s to device %s.\n",
state->next_tape_label, state->device->device_name);
- device_finish(state->device);
- device_read_label(state->device);
+
+ if (!device_finish(state->device))
+ goto request_new_volume;
+
+ /* This time, if we can't read the label, assume we've overwritten
+ * the volume or otherwise corrupted it */
+ status = device_read_label(state->device);
+ if ((status & ~READ_LABEL_STATUS_VOLUME_UNLABELED) &&
+ !(status & READ_LABEL_STATUS_VOLUME_UNLABELED))
+ goto request_new_volume;
+
tape_used = check_volume_changed(state->device, old_volume_name,
old_volume_time);
- g_object_unref(state->device);
- state->device = NULL;
- amfree(state->next_tape_label);
- /* If the volume was written, we tell the driver and then immediately
- * try again. */
if (tape_used) {
- putresult(NEW_TAPE, "%s %s\n", dump_info->handle,
- state->device->volume_label);
- if (old_volume_name) {
- log_add(L_WARNING, "Problem writing label to volume %s, "
- "volume may be erased.\n", old_volume_name);
- } else {
- log_add(L_WARNING, "Problem writing label %s to new volume, "
- "volume may be erased.\n", state->next_tape_label);
- }
- amfree(old_volume_name);
- amfree(old_volume_time);
- return find_and_label_new_tape(state, dump_info);
+ goto request_new_volume;
} else {
- /* Otherwise, we grab a new tape without talking to the driver
- * again. */
- tape_search_request_t request;
- gboolean search_result;
- if (old_volume_name) {
- log_add(L_WARNING, "Problem writing label to volume %s, "
- "old volume data intact\n", old_volume_name);
- } else {
- log_add(L_WARNING, "Problem writing label %s to new volume, "
- "old volume data intact\n", state->next_tape_label);
- }
- amfree(old_volume_name);
- amfree(old_volume_time);
- request.state = state;
- request.prolong = TRUE;
- request.errmsg = NULL;
- search_result = GPOINTER_TO_INT(tape_search_thread(&request));
- if (search_result) {
- amfree(request.errmsg);
- return label_new_tape(state, dump_info);
- } else {
- /* Problem finding a new tape! */
- log_taper_scan_errmsg(request.errmsg);
- putresult(NO_NEW_TAPE, "%s\n", dump_info->handle);
- return FALSE;
- }
+ goto skip_volume;
}
- } else {
- amfree(old_volume_name);
- amfree(old_volume_time);
}
+ amfree(old_volume_name);
+ amfree(old_volume_time);
amfree(state->next_tape_label);
- tapelist_name = config_dir_relative(getconf_str(CNF_TAPELIST));
- if (state->cur_tape == 0) {
- tapelist_name_old = stralloc2(tapelist_name, ".yesterday");
- } else {
- char cur_str[NUM_STR_SIZE];
- g_snprintf(cur_str, SIZEOF(cur_str), "%d", state->cur_tape - 1);
- tapelist_name_old = vstralloc(tapelist_name,
- ".today.", cur_str, NULL);
- }
-
- if (write_tapelist(tapelist_name_old)) {
- error("could not write tapelist: %s", strerror(errno));
- /*NOTREACHED*/
- }
- amfree(tapelist_name_old);
-
- remove_tapelabel(state->device->volume_label);
- add_tapelabel(state->driver_start_time,
- state->device->volume_label);
- if (write_tapelist(tapelist_name)) {
- error("could not write tapelist: %s", strerror(errno));
- /*NOTREACHED*/
- }
- amfree(tapelist_name);
+ update_tapelist(state);
state->cur_tape++;
log_add(L_START, "datestamp %s label %s tape %d",
state->device->volume_label);
return TRUE;
+
+request_new_volume:
+ /* Tell the driver we overwrote this volume, even if it was empty, and request
+ * a new volume. */
+ if (state->device) {
+ g_object_unref(state->device);
+ state->device = NULL;
+ }
+
+ putresult(NEW_TAPE, "%s %s\n", dump_info->handle,
+ state->next_tape_label);
+ if (old_volume_name) {
+ log_add(L_WARNING, "Problem writing label '%s' to volume %s, "
+ "volume may be erased.\n",
+ state->next_tape_label, old_volume_name);
+ } else {
+ log_add(L_WARNING, "Problem writing label '%s' to new volume, "
+ "volume may be erased.\n", state->next_tape_label);
+ }
+
+ amfree(state->next_tape_label);
+ amfree(old_volume_name);
+ amfree(old_volume_time);
+
+ return find_and_label_new_tape(state, dump_info);
+
+skip_volume:
+ /* grab a new volume without talking to the driver again -- we do this if we're
+ * confident we didn't overwrite the last tape we got. */
+ if (state->device) {
+ g_object_unref(state->device);
+ state->device = NULL;
+ }
+
+ if (old_volume_name) {
+ log_add(L_WARNING, "Problem writing label '%s' to volume '%s', "
+ "old volume data intact\n",
+ state->next_tape_label, old_volume_name);
+ } else {
+ log_add(L_WARNING, "Problem writing label '%s' to new volume, "
+ "old volume data intact\n", state->next_tape_label);
+ }
+
+ amfree(state->next_tape_label);
+ amfree(old_volume_name);
+ amfree(old_volume_time);
+
+ request.state = state;
+ request.prolong = TRUE;
+ request.errmsg = NULL;
+ search_result = GPOINTER_TO_INT(tape_search_thread(&request));
+ if (search_result) {
+ amfree(request.errmsg);
+ return label_new_tape(state, dump_info);
+ } else {
+ /* Problem finding a new tape! */
+ log_taper_scan_errmsg(request.errmsg);
+ putresult(NO_NEW_TAPE, "%s\n", dump_info->handle);
+ return FALSE;
+ }
}
/* Find out if the dump is PARTIAL or not, and set the proper driver
projects / debian / amanda / blobdiff