2 * Module for snapshot IO using snapper
4 * Copyright (C) David Disseldorp 2012-2014
6 * Portions taken from vfs_shadow_copy2.c:
7 * Copyright (C) Andrew Tridgell 2007
8 * Copyright (C) Ed Plese 2009
9 * Copyright (C) Volker Lendecke 2011
10 * Copyright (C) Christian Ambach 2011
11 * Copyright (C) Michael Adam 2013
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 3 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, see <http://www.gnu.org/licenses/>.
27 #include <dbus/dbus.h>
28 #ifdef HAVE_LINUX_IOCTL_H
29 #include <linux/ioctl.h>
31 #include <sys/ioctl.h>
35 #include "include/ntioctl.h"
36 #include "include/smb.h"
37 #include "system/filesys.h"
38 #include "smbd/smbd.h"
39 #include "lib/util/tevent_ntstatus.h"
40 #include "lib/util/smb_strtox.h"
42 #define SNAPPER_SIG_LIST_SNAPS_RSP "a(uquxussa{ss})"
43 #define SNAPPER_SIG_LIST_CONFS_RSP "a(ssa{ss})"
44 #define SNAPPER_SIG_CREATE_SNAP_RSP "u"
45 #define SNAPPER_SIG_DEL_SNAPS_RSP ""
46 #define SNAPPER_SIG_STRING_DICT "{ss}"
61 uint32_t num_user_data;
62 struct snapper_dict *user_data;
69 struct snapper_dict *attrs;
73 const char *snapper_err_str;
75 } snapper_err_map[] = {
76 { "error.no_permissions", NT_STATUS_ACCESS_DENIED },
79 static NTSTATUS snapper_err_ntstatus_map(const char *snapper_err_str)
83 if (snapper_err_str == NULL) {
84 return NT_STATUS_UNSUCCESSFUL;
86 for (i = 0; i < ARRAY_SIZE(snapper_err_map); i++) {
87 if (!strcmp(snapper_err_map[i].snapper_err_str,
89 return snapper_err_map[i].status;
92 DEBUG(2, ("no explicit mapping for dbus error: %s\n", snapper_err_str));
94 return NT_STATUS_UNSUCCESSFUL;
98 * Strings are UTF-8. Other characters must be encoded hexadecimal as "\x??".
99 * As a consequence "\" must be encoded as "\\".
101 static NTSTATUS snapper_dbus_str_encode(TALLOC_CTX *mem_ctx, const char *in_str,
110 if (in_str == NULL) {
111 return NT_STATUS_INVALID_PARAMETER;
114 in_len = strlen(in_str);
116 /* output can be max 4 times the length of @in_str, +1 for terminator */
117 out_len = (in_len * 4) + 1;
119 out_str = talloc_array(mem_ctx, char, out_len);
120 if (out_str == NULL) {
121 return NT_STATUS_NO_MEMORY;
125 for (i = 0; i < in_len; i++) {
128 if (in_str[i] == '\\') {
129 pushed = snprintf(out_str + out_off, out_len - out_off,
131 } else if ((unsigned char)in_str[i] > 127) {
132 pushed = snprintf(out_str + out_off, out_len - out_off,
133 "\\x%02x", (unsigned char)in_str[i]);
135 /* regular character */
136 *(out_str + out_off) = in_str[i];
137 pushed = sizeof(char);
139 if (pushed >= out_len - out_off) {
140 /* truncated, should never happen */
141 talloc_free(out_str);
142 return NT_STATUS_INTERNAL_ERROR;
147 *(out_str + out_off) = '\0';
153 static NTSTATUS snapper_dbus_str_decode(TALLOC_CTX *mem_ctx, const char *in_str,
162 if (in_str == NULL) {
163 return NT_STATUS_INVALID_PARAMETER;
166 in_len = strlen(in_str);
168 /* output cannot be larger than input, +1 for terminator */
169 out_len = in_len + 1;
171 out_str = talloc_array(mem_ctx, char, out_len);
172 if (out_str == NULL) {
173 return NT_STATUS_NO_MEMORY;
177 for (i = 0; i < in_len; i++) {
180 unsigned int non_ascii_byte;
182 if (in_str[i] != '\\') {
183 out_str[out_off] = in_str[i];
189 if (in_str[i] == '\\') {
190 out_str[out_off] = '\\';
193 } else if (in_str[i] != 'x') {
194 goto err_invalid_src_encoding;
197 /* non-ASCII, encoded as two hex chars */
198 for (j = 0; j < 2; j++) {
200 if ((in_str[i] == '\0') || !isxdigit(in_str[i])) {
201 goto err_invalid_src_encoding;
203 hex_buf[j] = in_str[i];
207 sscanf(hex_buf, "%x", &non_ascii_byte);
208 out_str[out_off] = (unsigned char)non_ascii_byte;
212 out_str[out_off] = '\0';
216 err_invalid_src_encoding:
217 DEBUG(0, ("invalid encoding %s\n", in_str));
218 return NT_STATUS_INVALID_PARAMETER;
221 static DBusConnection *snapper_dbus_conn_create(void)
224 DBusConnection *dconn;
226 dbus_error_init(&err);
229 * Always create a new DBus connection, to ensure snapperd detects the
230 * correct client [E]UID. With dbus_bus_get() it does not!
232 dconn = dbus_bus_get_private(DBUS_BUS_SYSTEM, &err);
233 if (dbus_error_is_set(&err)) {
234 DEBUG(0, ("dbus connection error: %s\n", err.message));
235 dbus_error_free(&err);
241 /* dbus_bus_get_private() sets exit-on-disconnect by default, undo it */
242 dbus_connection_set_exit_on_disconnect(dconn, false);
247 static void snapper_dbus_conn_destroy(DBusConnection *dconn)
250 DEBUG(2, ("attempt to destroy NULL dbus connection\n"));
254 dbus_connection_close(dconn);
255 dbus_connection_unref(dconn);
259 * send the message @send_msg over the dbus and wait for a response, return the
260 * responsee via @recv_msg_out.
261 * @send_msg is not freed, dbus_message_unref() must be handled by the caller.
263 static NTSTATUS snapper_dbus_msg_xchng(DBusConnection *dconn,
264 DBusMessage *send_msg,
265 DBusMessage **recv_msg_out)
267 DBusPendingCall *pending;
268 DBusMessage *recv_msg;
270 /* send message and get a handle for a reply */
271 if (!dbus_connection_send_with_reply(dconn, send_msg, &pending, -1)) {
272 return NT_STATUS_NO_MEMORY;
274 if (NULL == pending) {
275 DEBUG(0, ("dbus msg send failed\n"));
276 return NT_STATUS_UNSUCCESSFUL;
279 dbus_connection_flush(dconn);
281 /* block until we receive a reply */
282 dbus_pending_call_block(pending);
284 /* get the reply message */
285 recv_msg = dbus_pending_call_steal_reply(pending);
286 if (recv_msg == NULL) {
287 DEBUG(0, ("Reply Null\n"));
288 return NT_STATUS_UNSUCCESSFUL;
290 /* free the pending message handle */
291 dbus_pending_call_unref(pending);
292 *recv_msg_out = recv_msg;
297 static NTSTATUS snapper_type_check(DBusMessageIter *iter,
300 int type = dbus_message_iter_get_arg_type(iter);
301 if (type != expected_type) {
302 DEBUG(0, ("got type %d, expecting %d\n",
303 type, expected_type));
304 return NT_STATUS_INVALID_PARAMETER;
310 static NTSTATUS snapper_type_check_get(DBusMessageIter *iter,
315 status = snapper_type_check(iter, expected_type);
316 if (!NT_STATUS_IS_OK(status)) {
320 dbus_message_iter_get_basic(iter, val);
325 static NTSTATUS snapper_dict_unpack(TALLOC_CTX *mem_ctx,
326 DBusMessageIter *iter,
327 struct snapper_dict *dict_out)
331 DBusMessageIter dct_iter;
335 status = snapper_type_check(iter, DBUS_TYPE_DICT_ENTRY);
336 if (!NT_STATUS_IS_OK(status)) {
339 dbus_message_iter_recurse(iter, &dct_iter);
341 status = snapper_type_check_get(&dct_iter, DBUS_TYPE_STRING,
343 if (!NT_STATUS_IS_OK(status)) {
346 status = snapper_dbus_str_decode(mem_ctx, key_encoded, &dict_out->key);
347 if (!NT_STATUS_IS_OK(status)) {
351 dbus_message_iter_next(&dct_iter);
352 status = snapper_type_check_get(&dct_iter, DBUS_TYPE_STRING,
354 if (!NT_STATUS_IS_OK(status)) {
355 talloc_free(dict_out->key);
358 status = snapper_dbus_str_decode(mem_ctx, val_encoded, &dict_out->val);
359 if (!NT_STATUS_IS_OK(status)) {
360 talloc_free(dict_out->key);
367 static void snapper_dict_array_print(uint32_t num_dicts,
368 struct snapper_dict *dicts)
372 for (i = 0; i < num_dicts; i++) {
373 DEBUG(10, ("dict (key: %s, val: %s)\n",
374 dicts[i].key, dicts[i].val));
378 static NTSTATUS snapper_dict_array_unpack(TALLOC_CTX *mem_ctx,
379 DBusMessageIter *iter,
380 uint32_t *num_dicts_out,
381 struct snapper_dict **dicts_out)
384 DBusMessageIter array_iter;
386 struct snapper_dict *dicts = NULL;
388 status = snapper_type_check(iter, DBUS_TYPE_ARRAY);
389 if (!NT_STATUS_IS_OK(status)) {
392 dbus_message_iter_recurse(iter, &array_iter);
395 while (dbus_message_iter_get_arg_type(&array_iter)
396 != DBUS_TYPE_INVALID) {
398 dicts = talloc_realloc(mem_ctx, dicts, struct snapper_dict,
403 status = snapper_dict_unpack(mem_ctx, &array_iter,
404 &dicts[num_dicts - 1]);
405 if (!NT_STATUS_IS_OK(status)) {
409 dbus_message_iter_next(&array_iter);
412 *num_dicts_out = num_dicts;
418 static NTSTATUS snapper_list_confs_pack(DBusMessage **req_msg_out)
422 msg = dbus_message_new_method_call("org.opensuse.Snapper",
423 "/org/opensuse/Snapper",
424 "org.opensuse.Snapper",
427 DEBUG(0, ("null msg\n"));
428 return NT_STATUS_NO_MEMORY;
431 /* no arguments to append */
437 static NTSTATUS snapper_conf_unpack(TALLOC_CTX *mem_ctx,
438 DBusMessageIter *iter,
439 struct snapper_conf *conf_out)
442 DBusMessageIter st_iter;
446 status = snapper_type_check(iter, DBUS_TYPE_STRUCT);
447 if (!NT_STATUS_IS_OK(status)) {
450 dbus_message_iter_recurse(iter, &st_iter);
452 status = snapper_type_check_get(&st_iter, DBUS_TYPE_STRING,
454 if (!NT_STATUS_IS_OK(status)) {
458 status = snapper_dbus_str_decode(mem_ctx, name_encoded,
460 if (!NT_STATUS_IS_OK(status)) {
464 dbus_message_iter_next(&st_iter);
465 status = snapper_type_check_get(&st_iter, DBUS_TYPE_STRING,
467 if (!NT_STATUS_IS_OK(status)) {
468 talloc_free(conf_out->name);
472 status = snapper_dbus_str_decode(mem_ctx, mnt_encoded,
474 if (!NT_STATUS_IS_OK(status)) {
475 talloc_free(conf_out->name);
479 dbus_message_iter_next(&st_iter);
480 status = snapper_dict_array_unpack(mem_ctx, &st_iter,
481 &conf_out->num_attrs,
483 if (!NT_STATUS_IS_OK(status)) {
484 talloc_free(conf_out->mnt);
485 talloc_free(conf_out->name);
492 static struct snapper_conf *snapper_conf_array_base_find(int32_t num_confs,
493 struct snapper_conf *confs,
498 for (i = 0; i < num_confs; i++) {
499 if (strcmp(confs[i].mnt, base) == 0) {
500 DEBUG(5, ("found snapper conf %s for path %s\n",
501 confs[i].name, base));
505 DEBUG(5, ("config for base %s not found\n", base));
510 static void snapper_conf_array_print(int32_t num_confs,
511 struct snapper_conf *confs)
515 for (i = 0; i < num_confs; i++) {
516 DEBUG(10, ("name: %s, mnt: %s\n",
517 confs[i].name, confs[i].mnt));
518 snapper_dict_array_print(confs[i].num_attrs, confs[i].attrs);
522 static NTSTATUS snapper_conf_array_unpack(TALLOC_CTX *mem_ctx,
523 DBusMessageIter *iter,
524 uint32_t *num_confs_out,
525 struct snapper_conf **confs_out)
529 struct snapper_conf *confs = NULL;
530 DBusMessageIter array_iter;
533 status = snapper_type_check(iter, DBUS_TYPE_ARRAY);
534 if (!NT_STATUS_IS_OK(status)) {
537 dbus_message_iter_recurse(iter, &array_iter);
540 while (dbus_message_iter_get_arg_type(&array_iter)
541 != DBUS_TYPE_INVALID) {
543 confs = talloc_realloc(mem_ctx, confs, struct snapper_conf,
548 status = snapper_conf_unpack(confs, &array_iter,
549 &confs[num_confs - 1]);
550 if (!NT_STATUS_IS_OK(status)) {
554 dbus_message_iter_next(&array_iter);
557 *num_confs_out = num_confs;
563 static NTSTATUS snapper_list_confs_unpack(TALLOC_CTX *mem_ctx,
564 DBusConnection *dconn,
565 DBusMessage *rsp_msg,
566 uint32_t *num_confs_out,
567 struct snapper_conf **confs_out)
570 DBusMessageIter iter;
573 struct snapper_conf *confs;
576 msg_type = dbus_message_get_type(rsp_msg);
577 if (msg_type == DBUS_MESSAGE_TYPE_ERROR) {
578 const char *err_str = dbus_message_get_error_name(rsp_msg);
579 DEBUG(0, ("list_confs error response: %s\n", err_str));
580 return snapper_err_ntstatus_map(err_str);
583 if (msg_type != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
584 DEBUG(0, ("unexpected list_confs ret type: %d\n",
586 return NT_STATUS_INVALID_PARAMETER;
589 sig = dbus_message_get_signature(rsp_msg);
591 || (strcmp(sig, SNAPPER_SIG_LIST_CONFS_RSP) != 0)) {
592 DEBUG(0, ("bad list confs response sig: %s, expected: %s\n",
593 (sig ? sig : "NULL"), SNAPPER_SIG_LIST_CONFS_RSP));
594 return NT_STATUS_INVALID_PARAMETER;
597 if (!dbus_message_iter_init(rsp_msg, &iter)) {
598 /* FIXME return empty? */
599 DEBUG(0, ("Message has no arguments!\n"));
600 return NT_STATUS_INVALID_PARAMETER;
603 status = snapper_conf_array_unpack(mem_ctx, &iter, &num_confs, &confs);
604 if (!NT_STATUS_IS_OK(status)) {
605 DEBUG(0, ("failed to unpack conf array\n"));
609 snapper_conf_array_print(num_confs, confs);
611 *num_confs_out = num_confs;
617 static NTSTATUS snapper_list_snaps_pack(TALLOC_CTX *mem_ctx,
619 DBusMessage **req_msg_out)
622 DBusMessageIter args;
626 msg = dbus_message_new_method_call("org.opensuse.Snapper", /* target for the method call */
627 "/org/opensuse/Snapper", /* object to call on */
628 "org.opensuse.Snapper", /* interface to call on */
629 "ListSnapshots"); /* method name */
631 DEBUG(0, ("failed to create list snaps message\n"));
632 return NT_STATUS_NO_MEMORY;
635 status = snapper_dbus_str_encode(mem_ctx, snapper_conf, &conf_encoded);
636 if (!NT_STATUS_IS_OK(status)) {
637 dbus_message_unref(msg);
641 /* append arguments */
642 dbus_message_iter_init_append(msg, &args);
643 if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
645 talloc_free(conf_encoded);
646 dbus_message_unref(msg);
647 return NT_STATUS_NO_MEMORY;
655 static NTSTATUS snapper_snap_struct_unpack(TALLOC_CTX *mem_ctx,
656 DBusMessageIter *iter,
657 struct snapper_snap *snap_out)
660 DBusMessageIter st_iter;
662 char *cleanup_encoded;
664 status = snapper_type_check(iter, DBUS_TYPE_STRUCT);
665 if (!NT_STATUS_IS_OK(status)) {
668 dbus_message_iter_recurse(iter, &st_iter);
670 status = snapper_type_check_get(&st_iter, DBUS_TYPE_UINT32,
672 if (!NT_STATUS_IS_OK(status)) {
676 dbus_message_iter_next(&st_iter);
677 status = snapper_type_check_get(&st_iter, DBUS_TYPE_UINT16,
679 if (!NT_STATUS_IS_OK(status)) {
683 dbus_message_iter_next(&st_iter);
684 status = snapper_type_check_get(&st_iter, DBUS_TYPE_UINT32,
686 if (!NT_STATUS_IS_OK(status)) {
690 dbus_message_iter_next(&st_iter);
691 status = snapper_type_check_get(&st_iter, DBUS_TYPE_INT64,
693 if (!NT_STATUS_IS_OK(status)) {
697 dbus_message_iter_next(&st_iter);
698 status = snapper_type_check_get(&st_iter, DBUS_TYPE_UINT32,
699 &snap_out->creator_uid);
700 if (!NT_STATUS_IS_OK(status)) {
704 dbus_message_iter_next(&st_iter);
705 status = snapper_type_check_get(&st_iter, DBUS_TYPE_STRING,
707 if (!NT_STATUS_IS_OK(status)) {
711 status = snapper_dbus_str_decode(mem_ctx, desc_encoded,
713 if (!NT_STATUS_IS_OK(status)) {
717 dbus_message_iter_next(&st_iter);
718 status = snapper_type_check_get(&st_iter, DBUS_TYPE_STRING,
720 if (!NT_STATUS_IS_OK(status)) {
721 talloc_free(snap_out->desc);
725 status = snapper_dbus_str_decode(mem_ctx, cleanup_encoded,
727 if (!NT_STATUS_IS_OK(status)) {
728 talloc_free(snap_out->desc);
732 dbus_message_iter_next(&st_iter);
733 status = snapper_dict_array_unpack(mem_ctx, &st_iter,
734 &snap_out->num_user_data,
735 &snap_out->user_data);
736 if (!NT_STATUS_IS_OK(status)) {
737 talloc_free(snap_out->cleanup);
738 talloc_free(snap_out->desc);
745 static void snapper_snap_array_print(int32_t num_snaps,
746 struct snapper_snap *snaps)
750 for (i = 0; i < num_snaps; i++) {
751 DEBUG(10, ("id: %u, "
758 (unsigned int)snaps[i].id,
759 (unsigned int)snaps[i].type,
760 (unsigned int)snaps[i].pre_id,
761 (long int)snaps[i].time,
762 (unsigned int)snaps[i].creator_uid,
765 snapper_dict_array_print(snaps[i].num_user_data,
770 static NTSTATUS snapper_snap_array_unpack(TALLOC_CTX *mem_ctx,
771 DBusMessageIter *iter,
772 uint32_t *num_snaps_out,
773 struct snapper_snap **snaps_out)
777 struct snapper_snap *snaps = NULL;
778 DBusMessageIter array_iter;
781 status = snapper_type_check(iter, DBUS_TYPE_ARRAY);
782 if (!NT_STATUS_IS_OK(status)) {
785 dbus_message_iter_recurse(iter, &array_iter);
788 while (dbus_message_iter_get_arg_type(&array_iter)
789 != DBUS_TYPE_INVALID) {
791 snaps = talloc_realloc(mem_ctx, snaps, struct snapper_snap,
796 status = snapper_snap_struct_unpack(snaps, &array_iter,
797 &snaps[num_snaps - 1]);
798 if (!NT_STATUS_IS_OK(status)) {
802 dbus_message_iter_next(&array_iter);
805 *num_snaps_out = num_snaps;
811 static NTSTATUS snapper_list_snaps_unpack(TALLOC_CTX *mem_ctx,
812 DBusMessage *rsp_msg,
813 uint32_t *num_snaps_out,
814 struct snapper_snap **snaps_out)
817 DBusMessageIter iter;
820 struct snapper_snap *snaps;
823 msg_type = dbus_message_get_type(rsp_msg);
824 if (msg_type == DBUS_MESSAGE_TYPE_ERROR) {
825 const char *err_str = dbus_message_get_error_name(rsp_msg);
826 DEBUG(0, ("list_snaps error response: %s\n", err_str));
827 return snapper_err_ntstatus_map(err_str);
830 if (msg_type != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
831 DEBUG(0,("unexpected list_snaps ret type: %d\n",
833 return NT_STATUS_INVALID_PARAMETER;
836 sig = dbus_message_get_signature(rsp_msg);
838 || (strcmp(sig, SNAPPER_SIG_LIST_SNAPS_RSP) != 0)) {
839 DEBUG(0, ("bad list snaps response sig: %s, "
841 (sig ? sig : "NULL"),
842 SNAPPER_SIG_LIST_SNAPS_RSP));
843 return NT_STATUS_INVALID_PARAMETER;
846 /* read the parameters */
847 if (!dbus_message_iter_init(rsp_msg, &iter)) {
848 DEBUG(0, ("response has no arguments!\n"));
849 return NT_STATUS_INVALID_PARAMETER;
852 status = snapper_snap_array_unpack(mem_ctx, &iter, &num_snaps, &snaps);
853 if (!NT_STATUS_IS_OK(status)) {
854 DEBUG(0, ("failed to unpack snap array\n"));
855 return NT_STATUS_INVALID_PARAMETER;
858 snapper_snap_array_print(num_snaps, snaps);
860 *num_snaps_out = num_snaps;
866 static NTSTATUS snapper_create_snap_pack(TALLOC_CTX *mem_ctx,
867 const char *snapper_conf,
869 uint32_t num_user_data,
870 struct snapper_dict *user_data,
871 DBusMessage **req_msg_out)
874 DBusMessageIter args;
875 DBusMessageIter array_iter;
876 DBusMessageIter struct_iter;
877 const char *empty = "";
884 DEBUG(10, ("CreateSingleSnapshot: %s, %s, %s, num user %u\n",
885 snapper_conf, desc, empty, num_user_data));
887 enc_ctx = talloc_new(mem_ctx);
888 if (enc_ctx == NULL) {
889 return NT_STATUS_NO_MEMORY;
892 msg = dbus_message_new_method_call("org.opensuse.Snapper",
893 "/org/opensuse/Snapper",
894 "org.opensuse.Snapper",
895 "CreateSingleSnapshot");
897 DEBUG(0, ("failed to create req msg\n"));
898 talloc_free(enc_ctx);
899 return NT_STATUS_NO_MEMORY;
902 status = snapper_dbus_str_encode(enc_ctx, snapper_conf, &str_encoded);
903 if (!NT_STATUS_IS_OK(status)) {
904 dbus_message_unref(msg);
905 talloc_free(enc_ctx);
909 /* append arguments */
910 dbus_message_iter_init_append(msg, &args);
911 ok = dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
914 dbus_message_unref(msg);
915 talloc_free(enc_ctx);
916 return NT_STATUS_NO_MEMORY;
919 status = snapper_dbus_str_encode(enc_ctx, desc, &str_encoded);
920 if (!NT_STATUS_IS_OK(status)) {
921 dbus_message_unref(msg);
922 talloc_free(enc_ctx);
926 ok = dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
929 dbus_message_unref(msg);
930 talloc_free(enc_ctx);
931 return NT_STATUS_NO_MEMORY;
934 /* cleanup - no need to encode empty string */
935 ok = dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
938 dbus_message_unref(msg);
939 talloc_free(enc_ctx);
940 return NT_STATUS_NO_MEMORY;
943 ok = dbus_message_iter_open_container(&args, DBUS_TYPE_ARRAY,
944 SNAPPER_SIG_STRING_DICT,
947 dbus_message_unref(msg);
948 talloc_free(enc_ctx);
949 return NT_STATUS_NO_MEMORY;
952 for (i = 0; i < num_user_data; i++) {
953 ok = dbus_message_iter_open_container(&array_iter,
954 DBUS_TYPE_DICT_ENTRY,
957 dbus_message_unref(msg);
958 talloc_free(enc_ctx);
959 return NT_STATUS_NO_MEMORY;
962 status = snapper_dbus_str_encode(enc_ctx, user_data[i].key,
964 if (!NT_STATUS_IS_OK(status)) {
965 dbus_message_unref(msg);
966 talloc_free(enc_ctx);
970 ok = dbus_message_iter_append_basic(&struct_iter,
974 dbus_message_unref(msg);
975 talloc_free(enc_ctx);
976 return NT_STATUS_NO_MEMORY;
979 status = snapper_dbus_str_encode(enc_ctx, user_data[i].val,
981 if (!NT_STATUS_IS_OK(status)) {
982 dbus_message_unref(msg);
983 talloc_free(enc_ctx);
987 ok = dbus_message_iter_append_basic(&struct_iter,
991 dbus_message_unref(msg);
992 talloc_free(enc_ctx);
993 return NT_STATUS_NO_MEMORY;
996 ok = dbus_message_iter_close_container(&array_iter, &struct_iter);
998 dbus_message_unref(msg);
999 talloc_free(enc_ctx);
1000 return NT_STATUS_NO_MEMORY;
1004 ok = dbus_message_iter_close_container(&args, &array_iter);
1006 dbus_message_unref(msg);
1007 talloc_free(enc_ctx);
1008 return NT_STATUS_NO_MEMORY;
1013 return NT_STATUS_OK;
1016 static NTSTATUS snapper_create_snap_unpack(DBusConnection *conn,
1017 DBusMessage *rsp_msg,
1018 uint32_t *snap_id_out)
1021 DBusMessageIter iter;
1026 msg_type = dbus_message_get_type(rsp_msg);
1027 if (msg_type == DBUS_MESSAGE_TYPE_ERROR) {
1028 const char *err_str = dbus_message_get_error_name(rsp_msg);
1029 DEBUG(0, ("create snap error response: %s, euid %d egid %d\n",
1030 err_str, geteuid(), getegid()));
1031 return snapper_err_ntstatus_map(err_str);
1034 if (msg_type != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
1035 DEBUG(0, ("unexpected create snap ret type: %d\n",
1037 return NT_STATUS_INVALID_PARAMETER;
1040 sig = dbus_message_get_signature(rsp_msg);
1042 || (strcmp(sig, SNAPPER_SIG_CREATE_SNAP_RSP) != 0)) {
1043 DEBUG(0, ("bad create snap response sig: %s, expected: %s\n",
1044 (sig ? sig : "NULL"), SNAPPER_SIG_CREATE_SNAP_RSP));
1045 return NT_STATUS_INVALID_PARAMETER;
1048 /* read the parameters */
1049 if (!dbus_message_iter_init(rsp_msg, &iter)) {
1050 DEBUG(0, ("response has no arguments!\n"));
1051 return NT_STATUS_INVALID_PARAMETER;
1054 status = snapper_type_check_get(&iter, DBUS_TYPE_UINT32, &snap_id);
1055 if (!NT_STATUS_IS_OK(status)) {
1058 *snap_id_out = snap_id;
1060 return NT_STATUS_OK;
1063 static NTSTATUS snapper_del_snap_pack(TALLOC_CTX *mem_ctx,
1064 const char *snapper_conf,
1066 DBusMessage **req_msg_out)
1069 DBusMessageIter args;
1070 DBusMessageIter array_iter;
1075 msg = dbus_message_new_method_call("org.opensuse.Snapper",
1076 "/org/opensuse/Snapper",
1077 "org.opensuse.Snapper",
1080 DEBUG(0, ("failed to create req msg\n"));
1081 return NT_STATUS_NO_MEMORY;
1084 status = snapper_dbus_str_encode(mem_ctx, snapper_conf, &conf_encoded);
1085 if (!NT_STATUS_IS_OK(status)) {
1086 dbus_message_unref(msg);
1090 /* append arguments */
1091 dbus_message_iter_init_append(msg, &args);
1092 ok = dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
1095 talloc_free(conf_encoded);
1096 dbus_message_unref(msg);
1097 return NT_STATUS_NO_MEMORY;
1100 ok = dbus_message_iter_open_container(&args, DBUS_TYPE_ARRAY,
1101 DBUS_TYPE_UINT32_AS_STRING,
1104 talloc_free(conf_encoded);
1105 dbus_message_unref(msg);
1106 return NT_STATUS_NO_MEMORY;
1109 ok = dbus_message_iter_append_basic(&array_iter,
1113 talloc_free(conf_encoded);
1114 dbus_message_unref(msg);
1115 return NT_STATUS_NO_MEMORY;
1118 dbus_message_iter_close_container(&args, &array_iter);
1121 return NT_STATUS_OK;
1124 static NTSTATUS snapper_del_snap_unpack(DBusConnection *conn,
1125 DBusMessage *rsp_msg)
1130 msg_type = dbus_message_get_type(rsp_msg);
1131 if (msg_type == DBUS_MESSAGE_TYPE_ERROR) {
1132 const char *err_str = dbus_message_get_error_name(rsp_msg);
1133 DEBUG(0, ("del snap error response: %s\n", err_str));
1134 return snapper_err_ntstatus_map(err_str);
1137 if (msg_type != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
1138 DEBUG(0, ("unexpected del snap ret type: %d\n",
1140 return NT_STATUS_INVALID_PARAMETER;
1143 sig = dbus_message_get_signature(rsp_msg);
1145 || (strcmp(sig, SNAPPER_SIG_DEL_SNAPS_RSP) != 0)) {
1146 DEBUG(0, ("bad create snap response sig: %s, expected: %s\n",
1147 (sig ? sig : "NULL"), SNAPPER_SIG_DEL_SNAPS_RSP));
1148 return NT_STATUS_INVALID_PARAMETER;
1151 /* no parameters in response */
1153 return NT_STATUS_OK;
1156 static NTSTATUS snapper_list_snaps_at_time_pack(TALLOC_CTX *mem_ctx,
1157 const char *snapper_conf,
1160 DBusMessage **req_msg_out)
1163 DBusMessageIter args;
1167 msg = dbus_message_new_method_call("org.opensuse.Snapper",
1168 "/org/opensuse/Snapper",
1169 "org.opensuse.Snapper",
1170 "ListSnapshotsAtTime");
1172 DEBUG(0, ("failed to create list snaps message\n"));
1173 return NT_STATUS_NO_MEMORY;
1176 status = snapper_dbus_str_encode(mem_ctx, snapper_conf, &conf_encoded);
1177 if (!NT_STATUS_IS_OK(status)) {
1178 dbus_message_unref(msg);
1182 dbus_message_iter_init_append(msg, &args);
1183 if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
1185 talloc_free(conf_encoded);
1186 dbus_message_unref(msg);
1187 return NT_STATUS_NO_MEMORY;
1190 if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_INT64,
1192 talloc_free(conf_encoded);
1193 dbus_message_unref(msg);
1194 return NT_STATUS_NO_MEMORY;
1197 if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_INT64,
1199 talloc_free(conf_encoded);
1200 dbus_message_unref(msg);
1201 return NT_STATUS_NO_MEMORY;
1206 return NT_STATUS_OK;
1208 /* no snapper_list_snaps_at_time_unpack, use snapper_list_snaps_unpack */
1211 * Determine the snapper snapshot id given a path.
1212 * Ideally this should be determined via a lookup.
1214 static NTSTATUS snapper_snap_path_to_id(TALLOC_CTX *mem_ctx,
1215 const char *snap_path,
1216 uint32_t *snap_id_out)
1223 path_dup = talloc_strdup(mem_ctx, snap_path);
1224 if (path_dup == NULL) {
1225 return NT_STATUS_NO_MEMORY;
1228 /* trim trailing '/' */
1229 str_idx = path_dup + strlen(path_dup) - 1;
1230 while (*str_idx == '/') {
1235 str_idx = strrchr(path_dup, '/');
1236 if ((str_idx == NULL)
1237 || (strcmp(str_idx + 1, "snapshot") != 0)) {
1238 talloc_free(path_dup);
1239 return NT_STATUS_INVALID_PARAMETER;
1242 while (*str_idx == '/') {
1247 str_idx = strrchr(path_dup, '/');
1248 if (str_idx == NULL) {
1249 talloc_free(path_dup);
1250 return NT_STATUS_INVALID_PARAMETER;
1254 snap_id = smb_strtoul(str_idx, NULL, 10, &error, SMB_STR_STANDARD);
1256 talloc_free(path_dup);
1257 return NT_STATUS_INVALID_PARAMETER;
1260 talloc_free(path_dup);
1261 *snap_id_out = snap_id;
1262 return NT_STATUS_OK;
1266 * Determine the snapper snapshot path given an id and base.
1267 * Ideally this should be determined via a lookup.
1269 static NTSTATUS snapper_snap_id_to_path(TALLOC_CTX *mem_ctx,
1270 const char *base_path,
1272 char **snap_path_out)
1276 snap_path = talloc_asprintf(mem_ctx, "%s/.snapshots/%u/snapshot",
1277 base_path, snap_id);
1278 if (snap_path == NULL) {
1279 return NT_STATUS_NO_MEMORY;
1282 *snap_path_out = snap_path;
1283 return NT_STATUS_OK;
1286 static NTSTATUS snapper_get_conf_call(TALLOC_CTX *mem_ctx,
1287 DBusConnection *dconn,
1289 char **conf_name_out,
1290 char **base_path_out)
1293 DBusMessage *req_msg;
1294 DBusMessage *rsp_msg;
1295 uint32_t num_confs = 0;
1296 struct snapper_conf *confs = NULL;
1297 struct snapper_conf *conf;
1301 status = snapper_list_confs_pack(&req_msg);
1302 if (!NT_STATUS_IS_OK(status)) {
1306 status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
1307 if (!NT_STATUS_IS_OK(status)) {
1311 status = snapper_list_confs_unpack(mem_ctx, dconn, rsp_msg,
1312 &num_confs, &confs);
1313 if (!NT_STATUS_IS_OK(status)) {
1318 * for now we only support shares where the path directly corresponds
1319 * to a snapper configuration.
1321 conf = snapper_conf_array_base_find(num_confs, confs,
1324 status = NT_STATUS_NOT_SUPPORTED;
1325 goto err_array_free;
1328 conf_name = talloc_strdup(mem_ctx, conf->name);
1329 if (conf_name == NULL) {
1330 status = NT_STATUS_NO_MEMORY;
1331 goto err_array_free;
1333 base_path = talloc_strdup(mem_ctx, conf->mnt);
1334 if (base_path == NULL) {
1335 status = NT_STATUS_NO_MEMORY;
1336 goto err_conf_name_free;
1340 dbus_message_unref(rsp_msg);
1341 dbus_message_unref(req_msg);
1343 *conf_name_out = conf_name;
1344 *base_path_out = base_path;
1346 return NT_STATUS_OK;
1349 talloc_free(conf_name);
1353 dbus_message_unref(rsp_msg);
1355 dbus_message_unref(req_msg);
1361 * Check whether a path can be shadow copied. Return the base volume, allowing
1362 * the caller to determine if multiple paths lie on the same base volume.
1364 static NTSTATUS snapper_snap_check_path(struct vfs_handle_struct *handle,
1365 TALLOC_CTX *mem_ctx,
1366 const char *service_path,
1370 DBusConnection *dconn;
1374 dconn = snapper_dbus_conn_create();
1375 if (dconn == NULL) {
1376 return NT_STATUS_UNSUCCESSFUL;
1379 status = snapper_get_conf_call(mem_ctx, dconn, service_path,
1380 &conf_name, &base_path);
1381 if (!NT_STATUS_IS_OK(status)) {
1382 goto err_conn_close;
1385 talloc_free(conf_name);
1386 *base_volume = base_path;
1387 snapper_dbus_conn_destroy(dconn);
1389 return NT_STATUS_OK;
1392 snapper_dbus_conn_destroy(dconn);
1396 static NTSTATUS snapper_create_snap_call(TALLOC_CTX *mem_ctx,
1397 DBusConnection *dconn,
1398 const char *conf_name,
1399 const char *base_path,
1400 const char *snap_desc,
1401 uint32_t num_user_data,
1402 struct snapper_dict *user_data,
1403 char **snap_path_out)
1406 DBusMessage *req_msg;
1407 DBusMessage *rsp_msg;
1408 uint32_t snap_id = 0;
1411 status = snapper_create_snap_pack(mem_ctx,
1417 if (!NT_STATUS_IS_OK(status)) {
1421 status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
1422 if (!NT_STATUS_IS_OK(status)) {
1426 status = snapper_create_snap_unpack(dconn, rsp_msg, &snap_id);
1427 if (!NT_STATUS_IS_OK(status)) {
1431 status = snapper_snap_id_to_path(mem_ctx, base_path, snap_id,
1433 if (!NT_STATUS_IS_OK(status)) {
1437 dbus_message_unref(rsp_msg);
1438 dbus_message_unref(req_msg);
1440 DEBUG(6, ("created new snapshot %u at %s\n", snap_id, snap_path));
1441 *snap_path_out = snap_path;
1443 return NT_STATUS_OK;
1446 dbus_message_unref(rsp_msg);
1448 dbus_message_unref(req_msg);
1453 static NTSTATUS snapper_snap_create(struct vfs_handle_struct *handle,
1454 TALLOC_CTX *mem_ctx,
1455 const char *base_volume,
1461 DBusConnection *dconn;
1465 char *snap_path = NULL;
1466 TALLOC_CTX *tmp_ctx;
1468 tmp_ctx = talloc_new(mem_ctx);
1469 if (tmp_ctx == NULL) {
1470 return NT_STATUS_NO_MEMORY;
1473 dconn = snapper_dbus_conn_create();
1474 if (dconn == NULL) {
1475 talloc_free(tmp_ctx);
1476 return NT_STATUS_UNSUCCESSFUL;
1479 status = snapper_get_conf_call(tmp_ctx, dconn, base_volume,
1480 &conf_name, &base_path);
1481 if (!NT_STATUS_IS_OK(status)) {
1482 snapper_dbus_conn_destroy(dconn);
1483 talloc_free(tmp_ctx);
1487 status = snapper_create_snap_call(tmp_ctx, dconn,
1488 conf_name, base_path,
1489 "Snapshot created by Samba",
1492 if (!NT_STATUS_IS_OK(status)) {
1493 snapper_dbus_conn_destroy(dconn);
1494 talloc_free(tmp_ctx);
1498 snapper_dbus_conn_destroy(dconn);
1499 *_base_path = talloc_steal(mem_ctx, base_path);
1500 *_snap_path = talloc_steal(mem_ctx, snap_path);
1501 talloc_free(tmp_ctx);
1503 return NT_STATUS_OK;
1506 static NTSTATUS snapper_delete_snap_call(TALLOC_CTX *mem_ctx,
1507 DBusConnection *dconn,
1508 const char *conf_name,
1512 DBusMessage *req_msg = NULL;
1513 DBusMessage *rsp_msg;
1515 status = snapper_del_snap_pack(mem_ctx, conf_name, snap_id, &req_msg);
1516 if (!NT_STATUS_IS_OK(status)) {
1520 status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
1521 if (!NT_STATUS_IS_OK(status)) {
1525 status = snapper_del_snap_unpack(dconn, rsp_msg);
1526 if (!NT_STATUS_IS_OK(status)) {
1530 dbus_message_unref(rsp_msg);
1531 dbus_message_unref(req_msg);
1533 DEBUG(6, ("deleted snapshot %u\n", snap_id));
1535 return NT_STATUS_OK;
1538 dbus_message_unref(rsp_msg);
1540 dbus_message_unref(req_msg);
1545 static NTSTATUS snapper_snap_delete(struct vfs_handle_struct *handle,
1546 TALLOC_CTX *mem_ctx,
1550 DBusConnection *dconn;
1553 char *snap_base_path;
1555 TALLOC_CTX *tmp_ctx;
1557 tmp_ctx = talloc_new(mem_ctx);
1558 if (tmp_ctx == NULL) {
1559 return NT_STATUS_NO_MEMORY;
1562 dconn = snapper_dbus_conn_create();
1563 if (dconn == NULL) {
1564 talloc_free(tmp_ctx);
1565 return NT_STATUS_UNSUCCESSFUL;
1568 status = snapper_get_conf_call(tmp_ctx, dconn, base_path,
1569 &conf_name, &snap_base_path);
1570 if (!NT_STATUS_IS_OK(status)) {
1571 snapper_dbus_conn_destroy(dconn);
1572 talloc_free(tmp_ctx);
1576 status = snapper_snap_path_to_id(tmp_ctx, snap_path, &snap_id);
1577 if (!NT_STATUS_IS_OK(status)) {
1578 snapper_dbus_conn_destroy(dconn);
1579 talloc_free(tmp_ctx);
1583 status = snapper_delete_snap_call(tmp_ctx, dconn, conf_name, snap_id);
1584 if (!NT_STATUS_IS_OK(status)) {
1585 snapper_dbus_conn_destroy(dconn);
1586 talloc_free(tmp_ctx);
1590 snapper_dbus_conn_destroy(dconn);
1591 talloc_free(tmp_ctx);
1593 return NT_STATUS_OK;
1596 /* sc_data used as parent talloc context for all labels */
1597 static int snapper_get_shadow_copy_data(struct vfs_handle_struct *handle,
1598 struct files_struct *fsp,
1599 struct shadow_copy_data *sc_data,
1602 DBusConnection *dconn;
1603 TALLOC_CTX *tmp_ctx;
1607 DBusMessage *req_msg = NULL;
1608 DBusMessage *rsp_msg;
1610 struct snapper_snap *snaps;
1614 tmp_ctx = talloc_new(sc_data);
1615 if (tmp_ctx == NULL) {
1616 status = NT_STATUS_NO_MEMORY;
1620 dconn = snapper_dbus_conn_create();
1621 if (dconn == NULL) {
1622 status = NT_STATUS_UNSUCCESSFUL;
1623 goto err_mem_ctx_free;
1626 if (fsp->conn->connectpath == NULL) {
1627 status = NT_STATUS_INVALID_PARAMETER;
1631 status = snapper_get_conf_call(tmp_ctx, dconn,
1632 fsp->conn->connectpath,
1635 if (!NT_STATUS_IS_OK(status)) {
1639 status = snapper_list_snaps_pack(tmp_ctx, conf_name, &req_msg);
1640 if (!NT_STATUS_IS_OK(status)) {
1644 status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
1645 if (!NT_STATUS_IS_OK(status)) {
1649 status = snapper_list_snaps_unpack(tmp_ctx, rsp_msg,
1650 &num_snaps, &snaps);
1651 if (!NT_STATUS_IS_OK(status)) {
1654 /* we should always get at least one snapshot (current) */
1655 if (num_snaps == 0) {
1656 DEBUG(1, ("zero snapshots in snap list response\n"));
1657 status = NT_STATUS_UNSUCCESSFUL;
1661 /* subtract 1, (current) snapshot is not returned */
1662 sc_data->num_volumes = num_snaps - 1;
1663 sc_data->labels = NULL;
1665 if ((labels == false) || (sc_data->num_volumes == 0)) {
1666 /* tokens need not be added to the labels array */
1670 sc_data->labels = talloc_array(sc_data, SHADOW_COPY_LABEL,
1671 sc_data->num_volumes);
1672 if (sc_data->labels == NULL) {
1673 status = NT_STATUS_NO_MEMORY;
1677 /* start at end for decending order, do not include 0 (current) */
1679 for (i = num_snaps - 1; i > 0; i--) {
1680 char *lbl = sc_data->labels[lbl_off++];
1681 struct tm gmt_snap_time;
1685 tm_ret = gmtime_r((time_t *)&snaps[i].time, &gmt_snap_time);
1686 if (tm_ret == NULL) {
1687 status = NT_STATUS_UNSUCCESSFUL;
1688 goto err_labels_free;
1690 str_sz = strftime(lbl, sizeof(SHADOW_COPY_LABEL),
1691 "@GMT-%Y.%m.%d-%H.%M.%S", &gmt_snap_time);
1693 status = NT_STATUS_UNSUCCESSFUL;
1694 goto err_labels_free;
1699 talloc_free(tmp_ctx);
1700 dbus_message_unref(rsp_msg);
1701 dbus_message_unref(req_msg);
1702 snapper_dbus_conn_destroy(dconn);
1707 TALLOC_FREE(sc_data->labels);
1709 dbus_message_unref(rsp_msg);
1711 dbus_message_unref(req_msg);
1713 snapper_dbus_conn_destroy(dconn);
1715 talloc_free(tmp_ctx);
1717 errno = map_errno_from_nt_status(status);
1721 static bool snapper_gmt_strip_snapshot(TALLOC_CTX *mem_ctx,
1722 struct vfs_handle_struct *handle,
1723 const struct smb_filename *smb_fname,
1729 if (smb_fname->twrp == 0) {
1733 if (pstripped != NULL) {
1734 stripped = talloc_strdup(mem_ctx, smb_fname->base_name);
1735 if (stripped == NULL) {
1738 *pstripped = stripped;
1741 *ptimestamp = nt_time_to_unix(smb_fname->twrp);
1748 static NTSTATUS snapper_get_snap_at_time_call(TALLOC_CTX *mem_ctx,
1749 DBusConnection *dconn,
1750 const char *conf_name,
1751 const char *base_path,
1753 char **snap_path_out)
1756 DBusMessage *req_msg = NULL;
1757 DBusMessage *rsp_msg;
1759 struct snapper_snap *snaps;
1762 status = snapper_list_snaps_at_time_pack(mem_ctx,
1767 if (!NT_STATUS_IS_OK(status)) {
1771 status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
1772 if (!NT_STATUS_IS_OK(status)) {
1776 status = snapper_list_snaps_unpack(mem_ctx, rsp_msg,
1777 &num_snaps, &snaps);
1778 if (!NT_STATUS_IS_OK(status)) {
1782 if (num_snaps == 0) {
1783 DEBUG(4, ("no snapshots found with time: %lu\n",
1784 (unsigned long)snaptime));
1785 status = NT_STATUS_INVALID_PARAMETER;
1786 goto err_snap_array_free;
1787 } else if (num_snaps > 0) {
1788 DEBUG(4, ("got %u snapshots for single time %lu, using top\n",
1789 num_snaps, (unsigned long)snaptime));
1792 status = snapper_snap_id_to_path(mem_ctx, base_path, snaps[0].id,
1794 if (!NT_STATUS_IS_OK(status)) {
1795 goto err_snap_array_free;
1798 *snap_path_out = snap_path;
1799 err_snap_array_free:
1802 dbus_message_unref(rsp_msg);
1804 dbus_message_unref(req_msg);
1809 static NTSTATUS snapper_snap_path_expand(struct connection_struct *conn,
1810 TALLOC_CTX *mem_ctx,
1812 char **snap_dir_out)
1814 DBusConnection *dconn;
1818 char *snap_path = NULL;
1820 dconn = snapper_dbus_conn_create();
1821 if (dconn == NULL) {
1822 status = NT_STATUS_UNSUCCESSFUL;
1826 if (conn->connectpath == NULL) {
1827 status = NT_STATUS_INVALID_PARAMETER;
1831 status = snapper_get_conf_call(mem_ctx, dconn,
1835 if (!NT_STATUS_IS_OK(status)) {
1839 status = snapper_get_snap_at_time_call(mem_ctx, dconn,
1840 conf_name, base_path, snap_time,
1842 if (!NT_STATUS_IS_OK(status)) {
1843 goto err_conf_name_free;
1846 /* confirm snapshot path is nested under base path */
1847 if (strncmp(snap_path, base_path, strlen(base_path)) != 0) {
1848 status = NT_STATUS_INVALID_PARAMETER;
1849 goto err_snap_path_free;
1852 talloc_free(conf_name);
1853 talloc_free(base_path);
1854 snapper_dbus_conn_destroy(dconn);
1855 *snap_dir_out = snap_path;
1857 return NT_STATUS_OK;
1860 talloc_free(snap_path);
1862 talloc_free(conf_name);
1863 talloc_free(base_path);
1865 snapper_dbus_conn_destroy(dconn);
1870 static char *snapper_gmt_convert(TALLOC_CTX *mem_ctx,
1871 struct vfs_handle_struct *handle,
1872 const char *name, time_t timestamp)
1874 char *snap_path = NULL;
1879 status = snapper_snap_path_expand(handle->conn, mem_ctx, timestamp,
1881 if (!NT_STATUS_IS_OK(status)) {
1882 errno = map_errno_from_nt_status(status);
1886 path = talloc_asprintf(mem_ctx, "%s/%s", snap_path, name);
1889 goto err_snap_path_free;
1892 DEBUG(10, ("converted %s/%s @ time to %s\n",
1893 handle->conn->connectpath, name, path));
1897 saved_errno = errno;
1898 talloc_free(snap_path);
1899 errno = saved_errno;
1904 static int snapper_gmt_renameat(vfs_handle_struct *handle,
1905 files_struct *srcfsp,
1906 const struct smb_filename *smb_fname_src,
1907 files_struct *dstfsp,
1908 const struct smb_filename *smb_fname_dst)
1910 time_t timestamp_src, timestamp_dst;
1912 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
1914 ×tamp_src, NULL)) {
1917 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
1919 ×tamp_dst, NULL)) {
1922 if (timestamp_src != 0) {
1926 if (timestamp_dst != 0) {
1930 return SMB_VFS_NEXT_RENAMEAT(handle,
1937 static int snapper_gmt_symlinkat(vfs_handle_struct *handle,
1938 const struct smb_filename *link_contents,
1939 struct files_struct *dirfsp,
1940 const struct smb_filename *new_smb_fname)
1942 time_t timestamp_old = 0;
1943 time_t timestamp_new = 0;
1945 if (!snapper_gmt_strip_snapshot(talloc_tos(),
1952 if (!snapper_gmt_strip_snapshot(talloc_tos(),
1959 if ((timestamp_old != 0) || (timestamp_new != 0)) {
1963 return SMB_VFS_NEXT_SYMLINKAT(handle,
1969 static int snapper_gmt_linkat(vfs_handle_struct *handle,
1970 files_struct *srcfsp,
1971 const struct smb_filename *old_smb_fname,
1972 files_struct *dstfsp,
1973 const struct smb_filename *new_smb_fname,
1976 time_t timestamp_old = 0;
1977 time_t timestamp_new = 0;
1979 if (!snapper_gmt_strip_snapshot(talloc_tos(),
1986 if (!snapper_gmt_strip_snapshot(talloc_tos(),
1993 if ((timestamp_old != 0) || (timestamp_new != 0)) {
1997 return SMB_VFS_NEXT_LINKAT(handle,
2005 static int snapper_gmt_stat(vfs_handle_struct *handle,
2006 struct smb_filename *smb_fname)
2009 char *stripped, *tmp;
2010 int ret, saved_errno;
2012 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2014 ×tamp, &stripped)) {
2017 if (timestamp == 0) {
2018 return SMB_VFS_NEXT_STAT(handle, smb_fname);
2021 tmp = smb_fname->base_name;
2022 smb_fname->base_name = snapper_gmt_convert(talloc_tos(), handle,
2023 stripped, timestamp);
2024 TALLOC_FREE(stripped);
2026 if (smb_fname->base_name == NULL) {
2027 smb_fname->base_name = tmp;
2031 ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
2032 saved_errno = errno;
2034 TALLOC_FREE(smb_fname->base_name);
2035 smb_fname->base_name = tmp;
2037 errno = saved_errno;
2041 static int snapper_gmt_lstat(vfs_handle_struct *handle,
2042 struct smb_filename *smb_fname)
2045 char *stripped, *tmp;
2046 int ret, saved_errno;
2048 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2050 ×tamp, &stripped)) {
2053 if (timestamp == 0) {
2054 return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
2057 tmp = smb_fname->base_name;
2058 smb_fname->base_name = snapper_gmt_convert(talloc_tos(), handle,
2059 stripped, timestamp);
2060 TALLOC_FREE(stripped);
2062 if (smb_fname->base_name == NULL) {
2063 smb_fname->base_name = tmp;
2067 ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
2068 saved_errno = errno;
2070 TALLOC_FREE(smb_fname->base_name);
2071 smb_fname->base_name = tmp;
2073 errno = saved_errno;
2077 static int snapper_gmt_openat(struct vfs_handle_struct *handle,
2078 const struct files_struct *dirfsp,
2079 const struct smb_filename *smb_fname_in,
2080 struct files_struct *fsp,
2084 struct smb_filename *smb_fname = NULL;
2086 char *stripped = NULL;
2088 int saved_errno = 0;
2090 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2092 ×tamp, &stripped)) {
2095 if (timestamp == 0) {
2096 return SMB_VFS_NEXT_OPENAT(handle,
2104 smb_fname = cp_smb_filename(talloc_tos(), smb_fname_in);
2105 if (smb_fname == NULL) {
2106 TALLOC_FREE(stripped);
2110 smb_fname->base_name = snapper_gmt_convert(smb_fname, handle,
2111 stripped, timestamp);
2112 TALLOC_FREE(stripped);
2114 if (smb_fname->base_name == NULL) {
2115 TALLOC_FREE(smb_fname);
2120 ret = SMB_VFS_NEXT_OPENAT(handle, dirfsp, smb_fname, fsp, flags, mode);
2122 saved_errno = errno;
2124 TALLOC_FREE(smb_fname);
2125 if (saved_errno != 0) {
2126 errno = saved_errno;
2131 static int snapper_gmt_unlinkat(vfs_handle_struct *handle,
2132 struct files_struct *dirfsp,
2133 const struct smb_filename *smb_fname,
2136 time_t timestamp = 0;
2138 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2140 ×tamp, NULL)) {
2143 if (timestamp != 0) {
2147 return SMB_VFS_NEXT_UNLINKAT(handle,
2153 static int snapper_gmt_fchmod(vfs_handle_struct *handle,
2154 struct files_struct *fsp,
2157 time_t timestamp = 0;
2158 const struct smb_filename *smb_fname = NULL;
2160 smb_fname = fsp->fsp_name;
2162 if (!snapper_gmt_strip_snapshot(talloc_tos(),
2170 if (timestamp != 0) {
2174 return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
2177 static int snapper_gmt_chdir(vfs_handle_struct *handle,
2178 const struct smb_filename *smb_fname)
2180 time_t timestamp = 0;
2181 char *stripped = NULL;
2183 int saved_errno = 0;
2185 struct smb_filename *conv_smb_fname = NULL;
2187 if (!snapper_gmt_strip_snapshot(talloc_tos(),
2194 if (timestamp == 0) {
2195 return SMB_VFS_NEXT_CHDIR(handle, smb_fname);
2197 conv = snapper_gmt_convert(talloc_tos(), handle, stripped, timestamp);
2198 TALLOC_FREE(stripped);
2202 conv_smb_fname = synthetic_smb_fname(talloc_tos(),
2208 if (conv_smb_fname == NULL) {
2213 ret = SMB_VFS_NEXT_CHDIR(handle, conv_smb_fname);
2215 saved_errno = errno;
2218 TALLOC_FREE(conv_smb_fname);
2219 if (saved_errno != 0) {
2220 errno = saved_errno;
2225 static int snapper_gmt_fntimes(vfs_handle_struct *handle,
2227 struct smb_file_time *ft)
2229 time_t timestamp = 0;
2231 if (!snapper_gmt_strip_snapshot(talloc_tos(),
2239 if (timestamp != 0) {
2244 return SMB_VFS_NEXT_FNTIMES(handle, fsp, ft);
2247 static int snapper_gmt_readlinkat(vfs_handle_struct *handle,
2248 const struct files_struct *dirfsp,
2249 const struct smb_filename *smb_fname,
2253 time_t timestamp = 0;
2255 int saved_errno = 0;
2256 struct smb_filename *full_fname = NULL;
2259 * Now this function only looks at smb_fname->twrp
2260 * we don't need to copy out the path. Just use
2261 * smb_fname->base_name directly.
2263 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2265 ×tamp, NULL)) {
2268 if (timestamp == 0) {
2269 return SMB_VFS_NEXT_READLINKAT(handle,
2275 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
2278 if (full_fname == NULL) {
2282 /* Find the snapshot path from the full pathname. */
2283 full_fname->base_name = snapper_gmt_convert(full_fname,
2285 full_fname->base_name,
2287 if (full_fname->base_name == NULL) {
2288 TALLOC_FREE(full_fname);
2291 ret = SMB_VFS_NEXT_READLINKAT(handle,
2292 handle->conn->cwd_fsp,
2297 saved_errno = errno;
2299 TALLOC_FREE(full_fname);
2300 if (saved_errno != 0) {
2301 errno = saved_errno;
2306 static int snapper_gmt_mknodat(vfs_handle_struct *handle,
2307 files_struct *dirfsp,
2308 const struct smb_filename *smb_fname,
2312 time_t timestamp = (time_t)0;
2314 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2316 ×tamp, NULL)) {
2319 if (timestamp != 0) {
2323 return SMB_VFS_NEXT_MKNODAT(handle,
2330 static struct smb_filename *snapper_gmt_realpath(vfs_handle_struct *handle,
2332 const struct smb_filename *smb_fname)
2334 time_t timestamp = 0;
2335 char *stripped = NULL;
2336 struct smb_filename *result_fname = NULL;
2337 struct smb_filename *conv_smb_fname = NULL;
2338 int saved_errno = 0;
2340 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2342 ×tamp, &stripped)) {
2345 if (timestamp == 0) {
2346 return SMB_VFS_NEXT_REALPATH(handle, ctx, smb_fname);
2349 conv_smb_fname = cp_smb_filename(talloc_tos(), smb_fname);
2350 if (conv_smb_fname == NULL) {
2353 conv_smb_fname->base_name = snapper_gmt_convert(conv_smb_fname, handle,
2354 stripped, timestamp);
2355 if (conv_smb_fname->base_name == NULL) {
2359 result_fname = SMB_VFS_NEXT_REALPATH(handle, ctx, conv_smb_fname);
2362 if (result_fname == NULL) {
2363 saved_errno = errno;
2365 TALLOC_FREE(conv_smb_fname);
2366 TALLOC_FREE(stripped);
2367 if (saved_errno != 0) {
2368 errno = saved_errno;
2370 return result_fname;
2373 static int snapper_gmt_mkdirat(vfs_handle_struct *handle,
2374 struct files_struct *dirfsp,
2375 const struct smb_filename *fname,
2378 time_t timestamp = 0;
2380 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle, fname,
2381 ×tamp, NULL)) {
2384 if (timestamp != 0) {
2388 return SMB_VFS_NEXT_MKDIRAT(handle,
2394 static int snapper_gmt_fchflags(vfs_handle_struct *handle,
2395 struct files_struct *fsp,
2398 time_t timestamp = 0;
2400 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2401 fsp->fsp_name, ×tamp, NULL)) {
2404 if (timestamp != 0) {
2408 return SMB_VFS_NEXT_FCHFLAGS(handle, fsp, flags);
2411 static int snapper_gmt_fsetxattr(struct vfs_handle_struct *handle,
2412 struct files_struct *fsp,
2413 const char *aname, const void *value,
2414 size_t size, int flags)
2416 time_t timestamp = 0;
2417 const struct smb_filename *smb_fname = NULL;
2419 smb_fname = fsp->fsp_name;
2421 if (!snapper_gmt_strip_snapshot(talloc_tos(),
2428 if (timestamp != 0) {
2432 return SMB_VFS_NEXT_FSETXATTR(handle, fsp,
2433 aname, value, size, flags);
2436 static NTSTATUS snapper_gmt_get_real_filename_at(
2437 struct vfs_handle_struct *handle,
2438 struct files_struct *dirfsp,
2440 TALLOC_CTX *mem_ctx,
2446 struct smb_filename *conv_fname = NULL;
2450 ok = snapper_gmt_strip_snapshot(
2451 talloc_tos(), handle, dirfsp->fsp_name,×tamp, &stripped);
2453 return NT_STATUS_NO_MEMORY;
2455 if (timestamp == 0) {
2456 return SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
2457 handle, dirfsp, name, mem_ctx, found_name);
2459 if (stripped[0] == '\0') {
2460 *found_name = talloc_strdup(mem_ctx, name);
2461 if (*found_name == NULL) {
2462 return NT_STATUS_NO_MEMORY;
2464 return NT_STATUS_OK;
2466 conv = snapper_gmt_convert(talloc_tos(), handle, stripped, timestamp);
2467 TALLOC_FREE(stripped);
2469 return map_nt_error_from_unix(errno);
2472 status = synthetic_pathref(
2474 dirfsp->conn->cwd_fsp,
2482 status = SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
2483 handle, conv_fname->fsp, name, mem_ctx, found_name);
2488 static uint64_t snapper_gmt_disk_free(vfs_handle_struct *handle,
2489 const struct smb_filename *smb_fname,
2494 time_t timestamp = 0;
2495 char *stripped = NULL;
2497 int saved_errno = 0;
2499 struct smb_filename *conv_smb_fname = NULL;
2501 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2502 smb_fname, ×tamp, &stripped)) {
2503 return (uint64_t)-1;
2505 if (timestamp == 0) {
2506 return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
2507 bsize, dfree, dsize);
2510 conv = snapper_gmt_convert(talloc_tos(), handle, stripped, timestamp);
2511 TALLOC_FREE(stripped);
2513 return (uint64_t)-1;
2515 conv_smb_fname = synthetic_smb_fname(talloc_tos(),
2521 if (conv_smb_fname == NULL) {
2524 return (uint64_t)-1;
2527 ret = SMB_VFS_NEXT_DISK_FREE(handle, conv_smb_fname,
2528 bsize, dfree, dsize);
2530 if (ret == (uint64_t)-1) {
2531 saved_errno = errno;
2533 TALLOC_FREE(conv_smb_fname);
2534 if (saved_errno != 0) {
2535 errno = saved_errno;
2540 static int snapper_gmt_get_quota(vfs_handle_struct *handle,
2541 const struct smb_filename *smb_fname,
2542 enum SMB_QUOTA_TYPE qtype,
2546 time_t timestamp = 0;
2547 char *stripped = NULL;
2549 int saved_errno = 0;
2551 struct smb_filename *conv_smb_fname = NULL;
2553 if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
2554 smb_fname, ×tamp, &stripped)) {
2557 if (timestamp == 0) {
2558 return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname, qtype, id, dq);
2561 conv = snapper_gmt_convert(talloc_tos(), handle, stripped, timestamp);
2562 TALLOC_FREE(stripped);
2566 conv_smb_fname = synthetic_smb_fname(talloc_tos(),
2573 if (conv_smb_fname == NULL) {
2578 ret = SMB_VFS_NEXT_GET_QUOTA(handle, conv_smb_fname, qtype, id, dq);
2581 saved_errno = errno;
2583 TALLOC_FREE(conv_smb_fname);
2584 if (saved_errno != 0) {
2585 errno = saved_errno;
2590 static NTSTATUS snapper_create_dfs_pathat(struct vfs_handle_struct *handle,
2591 struct files_struct *dirfsp,
2592 const struct smb_filename *smb_fname,
2593 const struct referral *reflist,
2594 size_t referral_count)
2596 time_t timestamp = 0;
2598 if (!snapper_gmt_strip_snapshot(talloc_tos(),
2603 return NT_STATUS_NO_MEMORY;
2605 if (timestamp != 0) {
2606 return NT_STATUS_MEDIA_WRITE_PROTECTED;
2608 return SMB_VFS_NEXT_CREATE_DFS_PATHAT(handle,
2615 static struct vfs_fn_pointers snapper_fns = {
2616 .snap_check_path_fn = snapper_snap_check_path,
2617 .snap_create_fn = snapper_snap_create,
2618 .snap_delete_fn = snapper_snap_delete,
2619 .get_shadow_copy_data_fn = snapper_get_shadow_copy_data,
2620 .create_dfs_pathat_fn = snapper_create_dfs_pathat,
2621 .disk_free_fn = snapper_gmt_disk_free,
2622 .get_quota_fn = snapper_gmt_get_quota,
2623 .renameat_fn = snapper_gmt_renameat,
2624 .linkat_fn = snapper_gmt_linkat,
2625 .symlinkat_fn = snapper_gmt_symlinkat,
2626 .stat_fn = snapper_gmt_stat,
2627 .lstat_fn = snapper_gmt_lstat,
2628 .openat_fn = snapper_gmt_openat,
2629 .unlinkat_fn = snapper_gmt_unlinkat,
2630 .fchmod_fn = snapper_gmt_fchmod,
2631 .chdir_fn = snapper_gmt_chdir,
2632 .fntimes_fn = snapper_gmt_fntimes,
2633 .readlinkat_fn = snapper_gmt_readlinkat,
2634 .mknodat_fn = snapper_gmt_mknodat,
2635 .realpath_fn = snapper_gmt_realpath,
2636 .mkdirat_fn = snapper_gmt_mkdirat,
2637 .getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
2638 .getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
2639 .fsetxattr_fn = snapper_gmt_fsetxattr,
2640 .fchflags_fn = snapper_gmt_fchflags,
2641 .get_real_filename_at_fn = snapper_gmt_get_real_filename_at,
2645 NTSTATUS vfs_snapper_init(TALLOC_CTX *ctx)
2647 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
2648 "snapper", &snapper_fns);