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854e8091b7
This makes it possible to more easily handle STOPPED_ON_SYMLINK vs OBJECT_PATH_NOT_FOUND vs OBJECT_NAME_NOT_FOUND and so on. The next patch needs this to properly handle symlinks. Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
2642 lines
60 KiB
C
2642 lines
60 KiB
C
/*
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* Module for snapshot IO using snapper
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*
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* Copyright (C) David Disseldorp 2012-2014
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*
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* Portions taken from vfs_shadow_copy2.c:
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* Copyright (C) Andrew Tridgell 2007
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* Copyright (C) Ed Plese 2009
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* Copyright (C) Volker Lendecke 2011
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* Copyright (C) Christian Ambach 2011
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* Copyright (C) Michael Adam 2013
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <dbus/dbus.h>
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#ifdef HAVE_LINUX_IOCTL_H
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#include <linux/ioctl.h>
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#endif
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#include <sys/ioctl.h>
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#include <dirent.h>
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#include <libgen.h>
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#include "includes.h"
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#include "include/ntioctl.h"
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#include "include/smb.h"
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#include "system/filesys.h"
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#include "smbd/smbd.h"
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#include "lib/util/tevent_ntstatus.h"
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#include "lib/util/smb_strtox.h"
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#define SNAPPER_SIG_LIST_SNAPS_RSP "a(uquxussa{ss})"
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#define SNAPPER_SIG_LIST_CONFS_RSP "a(ssa{ss})"
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#define SNAPPER_SIG_CREATE_SNAP_RSP "u"
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#define SNAPPER_SIG_DEL_SNAPS_RSP ""
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#define SNAPPER_SIG_STRING_DICT "{ss}"
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struct snapper_dict {
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char *key;
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char *val;
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};
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struct snapper_snap {
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uint32_t id;
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uint16_t type;
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uint32_t pre_id;
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int64_t time;
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uint32_t creator_uid;
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char *desc;
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char *cleanup;
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uint32_t num_user_data;
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struct snapper_dict *user_data;
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};
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struct snapper_conf {
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char *name;
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char *mnt;
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uint32_t num_attrs;
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struct snapper_dict *attrs;
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};
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static const struct {
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const char *snapper_err_str;
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NTSTATUS status;
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} snapper_err_map[] = {
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{ "error.no_permissions", NT_STATUS_ACCESS_DENIED },
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};
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static NTSTATUS snapper_err_ntstatus_map(const char *snapper_err_str)
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{
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int i;
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if (snapper_err_str == NULL) {
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return NT_STATUS_UNSUCCESSFUL;
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}
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for (i = 0; i < ARRAY_SIZE(snapper_err_map); i++) {
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if (!strcmp(snapper_err_map[i].snapper_err_str,
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snapper_err_str)) {
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return snapper_err_map[i].status;
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}
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}
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DEBUG(2, ("no explicit mapping for dbus error: %s\n", snapper_err_str));
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return NT_STATUS_UNSUCCESSFUL;
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}
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/*
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* Strings are UTF-8. Other characters must be encoded hexadecimal as "\x??".
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* As a consequence "\" must be encoded as "\\".
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*/
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static NTSTATUS snapper_dbus_str_encode(TALLOC_CTX *mem_ctx, const char *in_str,
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char **_out_str)
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{
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size_t in_len;
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char *out_str;
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int i;
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int out_off;
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int out_len;
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if (in_str == NULL) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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in_len = strlen(in_str);
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/* output can be max 4 times the length of @in_str, +1 for terminator */
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out_len = (in_len * 4) + 1;
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out_str = talloc_array(mem_ctx, char, out_len);
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if (out_str == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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out_off = 0;
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for (i = 0; i < in_len; i++) {
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size_t pushed;
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if (in_str[i] == '\\') {
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pushed = snprintf(out_str + out_off, out_len - out_off,
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"\\\\");
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} else if ((unsigned char)in_str[i] > 127) {
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pushed = snprintf(out_str + out_off, out_len - out_off,
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"\\x%02x", (unsigned char)in_str[i]);
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} else {
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/* regular character */
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*(out_str + out_off) = in_str[i];
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pushed = sizeof(char);
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}
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if (pushed >= out_len - out_off) {
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/* truncated, should never happen */
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talloc_free(out_str);
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return NT_STATUS_INTERNAL_ERROR;
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}
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out_off += pushed;
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}
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*(out_str + out_off) = '\0';
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*_out_str = out_str;
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return NT_STATUS_OK;
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}
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static NTSTATUS snapper_dbus_str_decode(TALLOC_CTX *mem_ctx, const char *in_str,
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char **_out_str)
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{
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size_t in_len;
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char *out_str;
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int i;
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int out_off;
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int out_len;
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if (in_str == NULL) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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in_len = strlen(in_str);
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/* output cannot be larger than input, +1 for terminator */
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out_len = in_len + 1;
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out_str = talloc_array(mem_ctx, char, out_len);
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if (out_str == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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out_off = 0;
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for (i = 0; i < in_len; i++) {
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int j;
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char hex_buf[3];
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unsigned int non_ascii_byte;
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if (in_str[i] != '\\') {
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out_str[out_off] = in_str[i];
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out_off++;
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continue;
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}
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i++;
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if (in_str[i] == '\\') {
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out_str[out_off] = '\\';
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out_off++;
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continue;
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} else if (in_str[i] != 'x') {
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goto err_invalid_src_encoding;
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}
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/* non-ASCII, encoded as two hex chars */
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for (j = 0; j < 2; j++) {
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i++;
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if ((in_str[i] == '\0') || !isxdigit(in_str[i])) {
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goto err_invalid_src_encoding;
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}
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hex_buf[j] = in_str[i];
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}
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hex_buf[2] = '\0';
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sscanf(hex_buf, "%x", &non_ascii_byte);
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out_str[out_off] = (unsigned char)non_ascii_byte;
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out_off++;
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}
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out_str[out_off] = '\0';
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*_out_str = out_str;
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return NT_STATUS_OK;
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err_invalid_src_encoding:
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DEBUG(0, ("invalid encoding %s\n", in_str));
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return NT_STATUS_INVALID_PARAMETER;
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}
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static DBusConnection *snapper_dbus_conn_create(void)
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{
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DBusError err;
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DBusConnection *dconn;
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dbus_error_init(&err);
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/*
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* Always create a new DBus connection, to ensure snapperd detects the
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* correct client [E]UID. With dbus_bus_get() it does not!
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*/
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dconn = dbus_bus_get_private(DBUS_BUS_SYSTEM, &err);
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if (dbus_error_is_set(&err)) {
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DEBUG(0, ("dbus connection error: %s\n", err.message));
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dbus_error_free(&err);
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}
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if (dconn == NULL) {
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return NULL;
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}
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/* dbus_bus_get_private() sets exit-on-disconnect by default, undo it */
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dbus_connection_set_exit_on_disconnect(dconn, false);
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return dconn;
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}
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static void snapper_dbus_conn_destroy(DBusConnection *dconn)
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{
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if (dconn == NULL) {
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DEBUG(2, ("attempt to destroy NULL dbus connection\n"));
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return;
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}
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dbus_connection_close(dconn);
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dbus_connection_unref(dconn);
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}
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/*
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* send the message @send_msg over the dbus and wait for a response, return the
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* responsee via @recv_msg_out.
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* @send_msg is not freed, dbus_message_unref() must be handled by the caller.
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*/
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static NTSTATUS snapper_dbus_msg_xchng(DBusConnection *dconn,
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DBusMessage *send_msg,
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DBusMessage **recv_msg_out)
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{
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DBusPendingCall *pending;
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DBusMessage *recv_msg;
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/* send message and get a handle for a reply */
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if (!dbus_connection_send_with_reply(dconn, send_msg, &pending, -1)) {
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return NT_STATUS_NO_MEMORY;
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}
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if (NULL == pending) {
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DEBUG(0, ("dbus msg send failed\n"));
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return NT_STATUS_UNSUCCESSFUL;
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}
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dbus_connection_flush(dconn);
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/* block until we receive a reply */
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dbus_pending_call_block(pending);
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/* get the reply message */
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recv_msg = dbus_pending_call_steal_reply(pending);
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if (recv_msg == NULL) {
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DEBUG(0, ("Reply Null\n"));
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return NT_STATUS_UNSUCCESSFUL;
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}
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/* free the pending message handle */
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dbus_pending_call_unref(pending);
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*recv_msg_out = recv_msg;
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return NT_STATUS_OK;
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}
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static NTSTATUS snapper_type_check(DBusMessageIter *iter,
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int expected_type)
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{
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int type = dbus_message_iter_get_arg_type(iter);
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if (type != expected_type) {
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DEBUG(0, ("got type %d, expecting %d\n",
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type, expected_type));
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return NT_STATUS_INVALID_PARAMETER;
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}
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return NT_STATUS_OK;
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}
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static NTSTATUS snapper_type_check_get(DBusMessageIter *iter,
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int expected_type,
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void *val)
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{
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NTSTATUS status;
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status = snapper_type_check(iter, expected_type);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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dbus_message_iter_get_basic(iter, val);
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return NT_STATUS_OK;
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}
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static NTSTATUS snapper_dict_unpack(TALLOC_CTX *mem_ctx,
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DBusMessageIter *iter,
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struct snapper_dict *dict_out)
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{
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NTSTATUS status;
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DBusMessageIter dct_iter;
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char *key_encoded;
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char *val_encoded;
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status = snapper_type_check(iter, DBUS_TYPE_DICT_ENTRY);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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dbus_message_iter_recurse(iter, &dct_iter);
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status = snapper_type_check_get(&dct_iter, DBUS_TYPE_STRING,
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&key_encoded);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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status = snapper_dbus_str_decode(mem_ctx, key_encoded, &dict_out->key);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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dbus_message_iter_next(&dct_iter);
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status = snapper_type_check_get(&dct_iter, DBUS_TYPE_STRING,
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&val_encoded);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(dict_out->key);
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return status;
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}
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status = snapper_dbus_str_decode(mem_ctx, val_encoded, &dict_out->val);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(dict_out->key);
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return status;
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}
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return NT_STATUS_OK;
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}
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static void snapper_dict_array_print(uint32_t num_dicts,
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struct snapper_dict *dicts)
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{
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int i;
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for (i = 0; i < num_dicts; i++) {
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DEBUG(10, ("dict (key: %s, val: %s)\n",
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dicts[i].key, dicts[i].val));
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}
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}
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static NTSTATUS snapper_dict_array_unpack(TALLOC_CTX *mem_ctx,
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DBusMessageIter *iter,
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uint32_t *num_dicts_out,
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struct snapper_dict **dicts_out)
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{
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NTSTATUS status;
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DBusMessageIter array_iter;
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uint32_t num_dicts;
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struct snapper_dict *dicts = NULL;
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status = snapper_type_check(iter, DBUS_TYPE_ARRAY);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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dbus_message_iter_recurse(iter, &array_iter);
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num_dicts = 0;
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while (dbus_message_iter_get_arg_type(&array_iter)
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!= DBUS_TYPE_INVALID) {
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num_dicts++;
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dicts = talloc_realloc(mem_ctx, dicts, struct snapper_dict,
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num_dicts);
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if (dicts == NULL)
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abort();
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status = snapper_dict_unpack(mem_ctx, &array_iter,
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&dicts[num_dicts - 1]);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(dicts);
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return status;
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}
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dbus_message_iter_next(&array_iter);
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}
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*num_dicts_out = num_dicts;
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*dicts_out = dicts;
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return NT_STATUS_OK;
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}
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static NTSTATUS snapper_list_confs_pack(DBusMessage **req_msg_out)
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{
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DBusMessage *msg;
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msg = dbus_message_new_method_call("org.opensuse.Snapper",
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"/org/opensuse/Snapper",
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"org.opensuse.Snapper",
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"ListConfigs");
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if (msg == NULL) {
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DEBUG(0, ("null msg\n"));
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return NT_STATUS_NO_MEMORY;
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}
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/* no arguments to append */
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*req_msg_out = msg;
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return NT_STATUS_OK;
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}
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static NTSTATUS snapper_conf_unpack(TALLOC_CTX *mem_ctx,
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DBusMessageIter *iter,
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struct snapper_conf *conf_out)
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{
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NTSTATUS status;
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DBusMessageIter st_iter;
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char *name_encoded;
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char *mnt_encoded;
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status = snapper_type_check(iter, DBUS_TYPE_STRUCT);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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dbus_message_iter_recurse(iter, &st_iter);
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status = snapper_type_check_get(&st_iter, DBUS_TYPE_STRING,
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&name_encoded);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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status = snapper_dbus_str_decode(mem_ctx, name_encoded,
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&conf_out->name);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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dbus_message_iter_next(&st_iter);
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status = snapper_type_check_get(&st_iter, DBUS_TYPE_STRING,
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&mnt_encoded);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(conf_out->name);
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return status;
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}
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status = snapper_dbus_str_decode(mem_ctx, mnt_encoded,
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&conf_out->mnt);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(conf_out->name);
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return status;
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}
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dbus_message_iter_next(&st_iter);
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status = snapper_dict_array_unpack(mem_ctx, &st_iter,
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&conf_out->num_attrs,
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&conf_out->attrs);
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if (!NT_STATUS_IS_OK(status)) {
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talloc_free(conf_out->mnt);
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talloc_free(conf_out->name);
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return status;
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}
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return NT_STATUS_OK;
|
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}
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|
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static struct snapper_conf *snapper_conf_array_base_find(int32_t num_confs,
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struct snapper_conf *confs,
|
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const char *base)
|
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{
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int i;
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for (i = 0; i < num_confs; i++) {
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if (strcmp(confs[i].mnt, base) == 0) {
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DEBUG(5, ("found snapper conf %s for path %s\n",
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confs[i].name, base));
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return &confs[i];
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}
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}
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DEBUG(5, ("config for base %s not found\n", base));
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return NULL;
|
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}
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|
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static void snapper_conf_array_print(int32_t num_confs,
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struct snapper_conf *confs)
|
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{
|
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int i;
|
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|
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for (i = 0; i < num_confs; i++) {
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DEBUG(10, ("name: %s, mnt: %s\n",
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confs[i].name, confs[i].mnt));
|
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snapper_dict_array_print(confs[i].num_attrs, confs[i].attrs);
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}
|
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}
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|
|
static NTSTATUS snapper_conf_array_unpack(TALLOC_CTX *mem_ctx,
|
|
DBusMessageIter *iter,
|
|
uint32_t *num_confs_out,
|
|
struct snapper_conf **confs_out)
|
|
{
|
|
uint32_t num_confs;
|
|
NTSTATUS status;
|
|
struct snapper_conf *confs = NULL;
|
|
DBusMessageIter array_iter;
|
|
|
|
|
|
status = snapper_type_check(iter, DBUS_TYPE_ARRAY);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
dbus_message_iter_recurse(iter, &array_iter);
|
|
|
|
num_confs = 0;
|
|
while (dbus_message_iter_get_arg_type(&array_iter)
|
|
!= DBUS_TYPE_INVALID) {
|
|
num_confs++;
|
|
confs = talloc_realloc(mem_ctx, confs, struct snapper_conf,
|
|
num_confs);
|
|
if (confs == NULL)
|
|
abort();
|
|
|
|
status = snapper_conf_unpack(confs, &array_iter,
|
|
&confs[num_confs - 1]);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
talloc_free(confs);
|
|
return status;
|
|
}
|
|
dbus_message_iter_next(&array_iter);
|
|
}
|
|
|
|
*num_confs_out = num_confs;
|
|
*confs_out = confs;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_list_confs_unpack(TALLOC_CTX *mem_ctx,
|
|
DBusConnection *dconn,
|
|
DBusMessage *rsp_msg,
|
|
uint32_t *num_confs_out,
|
|
struct snapper_conf **confs_out)
|
|
{
|
|
NTSTATUS status;
|
|
DBusMessageIter iter;
|
|
int msg_type;
|
|
uint32_t num_confs;
|
|
struct snapper_conf *confs;
|
|
const char *sig;
|
|
|
|
msg_type = dbus_message_get_type(rsp_msg);
|
|
if (msg_type == DBUS_MESSAGE_TYPE_ERROR) {
|
|
const char *err_str = dbus_message_get_error_name(rsp_msg);
|
|
DEBUG(0, ("list_confs error response: %s\n", err_str));
|
|
return snapper_err_ntstatus_map(err_str);
|
|
}
|
|
|
|
if (msg_type != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
|
|
DEBUG(0, ("unexpected list_confs ret type: %d\n",
|
|
msg_type));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
sig = dbus_message_get_signature(rsp_msg);
|
|
if ((sig == NULL)
|
|
|| (strcmp(sig, SNAPPER_SIG_LIST_CONFS_RSP) != 0)) {
|
|
DEBUG(0, ("bad list confs response sig: %s, expected: %s\n",
|
|
(sig ? sig : "NULL"), SNAPPER_SIG_LIST_CONFS_RSP));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (!dbus_message_iter_init(rsp_msg, &iter)) {
|
|
/* FIXME return empty? */
|
|
DEBUG(0, ("Message has no arguments!\n"));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
status = snapper_conf_array_unpack(mem_ctx, &iter, &num_confs, &confs);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("failed to unpack conf array\n"));
|
|
return status;
|
|
}
|
|
|
|
snapper_conf_array_print(num_confs, confs);
|
|
|
|
*num_confs_out = num_confs;
|
|
*confs_out = confs;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_list_snaps_pack(TALLOC_CTX *mem_ctx,
|
|
char *snapper_conf,
|
|
DBusMessage **req_msg_out)
|
|
{
|
|
DBusMessage *msg;
|
|
DBusMessageIter args;
|
|
char *conf_encoded;
|
|
NTSTATUS status;
|
|
|
|
msg = dbus_message_new_method_call("org.opensuse.Snapper", /* target for the method call */
|
|
"/org/opensuse/Snapper", /* object to call on */
|
|
"org.opensuse.Snapper", /* interface to call on */
|
|
"ListSnapshots"); /* method name */
|
|
if (msg == NULL) {
|
|
DEBUG(0, ("failed to create list snaps message\n"));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = snapper_dbus_str_encode(mem_ctx, snapper_conf, &conf_encoded);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
dbus_message_unref(msg);
|
|
return status;
|
|
}
|
|
|
|
/* append arguments */
|
|
dbus_message_iter_init_append(msg, &args);
|
|
if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
|
|
&conf_encoded)) {
|
|
talloc_free(conf_encoded);
|
|
dbus_message_unref(msg);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
*req_msg_out = msg;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_snap_struct_unpack(TALLOC_CTX *mem_ctx,
|
|
DBusMessageIter *iter,
|
|
struct snapper_snap *snap_out)
|
|
{
|
|
NTSTATUS status;
|
|
DBusMessageIter st_iter;
|
|
char *desc_encoded;
|
|
char *cleanup_encoded;
|
|
|
|
status = snapper_type_check(iter, DBUS_TYPE_STRUCT);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
dbus_message_iter_recurse(iter, &st_iter);
|
|
|
|
status = snapper_type_check_get(&st_iter, DBUS_TYPE_UINT32,
|
|
&snap_out->id);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
dbus_message_iter_next(&st_iter);
|
|
status = snapper_type_check_get(&st_iter, DBUS_TYPE_UINT16,
|
|
&snap_out->type);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
dbus_message_iter_next(&st_iter);
|
|
status = snapper_type_check_get(&st_iter, DBUS_TYPE_UINT32,
|
|
&snap_out->pre_id);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
dbus_message_iter_next(&st_iter);
|
|
status = snapper_type_check_get(&st_iter, DBUS_TYPE_INT64,
|
|
&snap_out->time);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
dbus_message_iter_next(&st_iter);
|
|
status = snapper_type_check_get(&st_iter, DBUS_TYPE_UINT32,
|
|
&snap_out->creator_uid);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
dbus_message_iter_next(&st_iter);
|
|
status = snapper_type_check_get(&st_iter, DBUS_TYPE_STRING,
|
|
&desc_encoded);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
status = snapper_dbus_str_decode(mem_ctx, desc_encoded,
|
|
&snap_out->desc);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
dbus_message_iter_next(&st_iter);
|
|
status = snapper_type_check_get(&st_iter, DBUS_TYPE_STRING,
|
|
&cleanup_encoded);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
talloc_free(snap_out->desc);
|
|
return status;
|
|
}
|
|
|
|
status = snapper_dbus_str_decode(mem_ctx, cleanup_encoded,
|
|
&snap_out->cleanup);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
talloc_free(snap_out->desc);
|
|
return status;
|
|
}
|
|
|
|
dbus_message_iter_next(&st_iter);
|
|
status = snapper_dict_array_unpack(mem_ctx, &st_iter,
|
|
&snap_out->num_user_data,
|
|
&snap_out->user_data);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
talloc_free(snap_out->cleanup);
|
|
talloc_free(snap_out->desc);
|
|
return status;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static void snapper_snap_array_print(int32_t num_snaps,
|
|
struct snapper_snap *snaps)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < num_snaps; i++) {
|
|
DEBUG(10, ("id: %u, "
|
|
"type: %u, "
|
|
"pre_id: %u, "
|
|
"time: %ld, "
|
|
"creator_uid: %u, "
|
|
"desc: %s, "
|
|
"cleanup: %s\n",
|
|
(unsigned int)snaps[i].id,
|
|
(unsigned int)snaps[i].type,
|
|
(unsigned int)snaps[i].pre_id,
|
|
(long int)snaps[i].time,
|
|
(unsigned int)snaps[i].creator_uid,
|
|
snaps[i].desc,
|
|
snaps[i].cleanup));
|
|
snapper_dict_array_print(snaps[i].num_user_data,
|
|
snaps[i].user_data);
|
|
}
|
|
}
|
|
|
|
static NTSTATUS snapper_snap_array_unpack(TALLOC_CTX *mem_ctx,
|
|
DBusMessageIter *iter,
|
|
uint32_t *num_snaps_out,
|
|
struct snapper_snap **snaps_out)
|
|
{
|
|
uint32_t num_snaps;
|
|
NTSTATUS status;
|
|
struct snapper_snap *snaps = NULL;
|
|
DBusMessageIter array_iter;
|
|
|
|
|
|
status = snapper_type_check(iter, DBUS_TYPE_ARRAY);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
dbus_message_iter_recurse(iter, &array_iter);
|
|
|
|
num_snaps = 0;
|
|
while (dbus_message_iter_get_arg_type(&array_iter)
|
|
!= DBUS_TYPE_INVALID) {
|
|
num_snaps++;
|
|
snaps = talloc_realloc(mem_ctx, snaps, struct snapper_snap,
|
|
num_snaps);
|
|
if (snaps == NULL)
|
|
abort();
|
|
|
|
status = snapper_snap_struct_unpack(snaps, &array_iter,
|
|
&snaps[num_snaps - 1]);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
talloc_free(snaps);
|
|
return status;
|
|
}
|
|
dbus_message_iter_next(&array_iter);
|
|
}
|
|
|
|
*num_snaps_out = num_snaps;
|
|
*snaps_out = snaps;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_list_snaps_unpack(TALLOC_CTX *mem_ctx,
|
|
DBusMessage *rsp_msg,
|
|
uint32_t *num_snaps_out,
|
|
struct snapper_snap **snaps_out)
|
|
{
|
|
NTSTATUS status;
|
|
DBusMessageIter iter;
|
|
int msg_type;
|
|
uint32_t num_snaps;
|
|
struct snapper_snap *snaps;
|
|
const char *sig;
|
|
|
|
msg_type = dbus_message_get_type(rsp_msg);
|
|
if (msg_type == DBUS_MESSAGE_TYPE_ERROR) {
|
|
const char *err_str = dbus_message_get_error_name(rsp_msg);
|
|
DEBUG(0, ("list_snaps error response: %s\n", err_str));
|
|
return snapper_err_ntstatus_map(err_str);
|
|
}
|
|
|
|
if (msg_type != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
|
|
DEBUG(0,("unexpected list_snaps ret type: %d\n",
|
|
msg_type));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
sig = dbus_message_get_signature(rsp_msg);
|
|
if ((sig == NULL)
|
|
|| (strcmp(sig, SNAPPER_SIG_LIST_SNAPS_RSP) != 0)) {
|
|
DEBUG(0, ("bad list snaps response sig: %s, "
|
|
"expected: %s\n",
|
|
(sig ? sig : "NULL"),
|
|
SNAPPER_SIG_LIST_SNAPS_RSP));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* read the parameters */
|
|
if (!dbus_message_iter_init(rsp_msg, &iter)) {
|
|
DEBUG(0, ("response has no arguments!\n"));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
status = snapper_snap_array_unpack(mem_ctx, &iter, &num_snaps, &snaps);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("failed to unpack snap array\n"));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
snapper_snap_array_print(num_snaps, snaps);
|
|
|
|
*num_snaps_out = num_snaps;
|
|
*snaps_out = snaps;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_create_snap_pack(TALLOC_CTX *mem_ctx,
|
|
const char *snapper_conf,
|
|
const char *desc,
|
|
uint32_t num_user_data,
|
|
struct snapper_dict *user_data,
|
|
DBusMessage **req_msg_out)
|
|
{
|
|
DBusMessage *msg;
|
|
DBusMessageIter args;
|
|
DBusMessageIter array_iter;
|
|
DBusMessageIter struct_iter;
|
|
const char *empty = "";
|
|
char *str_encoded;
|
|
uint32_t i;
|
|
bool ok;
|
|
TALLOC_CTX *enc_ctx;
|
|
NTSTATUS status;
|
|
|
|
DEBUG(10, ("CreateSingleSnapshot: %s, %s, %s, num user %u\n",
|
|
snapper_conf, desc, empty, num_user_data));
|
|
|
|
enc_ctx = talloc_new(mem_ctx);
|
|
if (enc_ctx == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
msg = dbus_message_new_method_call("org.opensuse.Snapper",
|
|
"/org/opensuse/Snapper",
|
|
"org.opensuse.Snapper",
|
|
"CreateSingleSnapshot");
|
|
if (msg == NULL) {
|
|
DEBUG(0, ("failed to create req msg\n"));
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = snapper_dbus_str_encode(enc_ctx, snapper_conf, &str_encoded);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return status;
|
|
}
|
|
|
|
/* append arguments */
|
|
dbus_message_iter_init_append(msg, &args);
|
|
ok = dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
|
|
&str_encoded);
|
|
if (!ok) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = snapper_dbus_str_encode(enc_ctx, desc, &str_encoded);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return status;
|
|
}
|
|
|
|
ok = dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
|
|
&str_encoded);
|
|
if (!ok) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
/* cleanup - no need to encode empty string */
|
|
ok = dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
|
|
&empty);
|
|
if (!ok) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
ok = dbus_message_iter_open_container(&args, DBUS_TYPE_ARRAY,
|
|
SNAPPER_SIG_STRING_DICT,
|
|
&array_iter);
|
|
if (!ok) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
for (i = 0; i < num_user_data; i++) {
|
|
ok = dbus_message_iter_open_container(&array_iter,
|
|
DBUS_TYPE_DICT_ENTRY,
|
|
NULL, &struct_iter);
|
|
if (!ok) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = snapper_dbus_str_encode(enc_ctx, user_data[i].key,
|
|
&str_encoded);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return status;
|
|
}
|
|
|
|
ok = dbus_message_iter_append_basic(&struct_iter,
|
|
DBUS_TYPE_STRING,
|
|
&str_encoded);
|
|
if (!ok) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = snapper_dbus_str_encode(enc_ctx, user_data[i].val,
|
|
&str_encoded);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return status;
|
|
}
|
|
|
|
ok = dbus_message_iter_append_basic(&struct_iter,
|
|
DBUS_TYPE_STRING,
|
|
&str_encoded);
|
|
if (!ok) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
ok = dbus_message_iter_close_container(&array_iter, &struct_iter);
|
|
if (!ok) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
}
|
|
|
|
ok = dbus_message_iter_close_container(&args, &array_iter);
|
|
if (!ok) {
|
|
dbus_message_unref(msg);
|
|
talloc_free(enc_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
*req_msg_out = msg;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_create_snap_unpack(DBusConnection *conn,
|
|
DBusMessage *rsp_msg,
|
|
uint32_t *snap_id_out)
|
|
{
|
|
NTSTATUS status;
|
|
DBusMessageIter iter;
|
|
int msg_type;
|
|
const char *sig;
|
|
uint32_t snap_id;
|
|
|
|
msg_type = dbus_message_get_type(rsp_msg);
|
|
if (msg_type == DBUS_MESSAGE_TYPE_ERROR) {
|
|
const char *err_str = dbus_message_get_error_name(rsp_msg);
|
|
DEBUG(0, ("create snap error response: %s, euid %d egid %d\n",
|
|
err_str, geteuid(), getegid()));
|
|
return snapper_err_ntstatus_map(err_str);
|
|
}
|
|
|
|
if (msg_type != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
|
|
DEBUG(0, ("unexpected create snap ret type: %d\n",
|
|
msg_type));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
sig = dbus_message_get_signature(rsp_msg);
|
|
if ((sig == NULL)
|
|
|| (strcmp(sig, SNAPPER_SIG_CREATE_SNAP_RSP) != 0)) {
|
|
DEBUG(0, ("bad create snap response sig: %s, expected: %s\n",
|
|
(sig ? sig : "NULL"), SNAPPER_SIG_CREATE_SNAP_RSP));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* read the parameters */
|
|
if (!dbus_message_iter_init(rsp_msg, &iter)) {
|
|
DEBUG(0, ("response has no arguments!\n"));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
status = snapper_type_check_get(&iter, DBUS_TYPE_UINT32, &snap_id);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
*snap_id_out = snap_id;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_del_snap_pack(TALLOC_CTX *mem_ctx,
|
|
const char *snapper_conf,
|
|
uint32_t snap_id,
|
|
DBusMessage **req_msg_out)
|
|
{
|
|
DBusMessage *msg;
|
|
DBusMessageIter args;
|
|
DBusMessageIter array_iter;
|
|
char *conf_encoded;
|
|
bool ok;
|
|
NTSTATUS status;
|
|
|
|
msg = dbus_message_new_method_call("org.opensuse.Snapper",
|
|
"/org/opensuse/Snapper",
|
|
"org.opensuse.Snapper",
|
|
"DeleteSnapshots");
|
|
if (msg == NULL) {
|
|
DEBUG(0, ("failed to create req msg\n"));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = snapper_dbus_str_encode(mem_ctx, snapper_conf, &conf_encoded);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
dbus_message_unref(msg);
|
|
return status;
|
|
}
|
|
|
|
/* append arguments */
|
|
dbus_message_iter_init_append(msg, &args);
|
|
ok = dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
|
|
&conf_encoded);
|
|
if (!ok) {
|
|
talloc_free(conf_encoded);
|
|
dbus_message_unref(msg);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
ok = dbus_message_iter_open_container(&args, DBUS_TYPE_ARRAY,
|
|
DBUS_TYPE_UINT32_AS_STRING,
|
|
&array_iter);
|
|
if (!ok) {
|
|
talloc_free(conf_encoded);
|
|
dbus_message_unref(msg);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
ok = dbus_message_iter_append_basic(&array_iter,
|
|
DBUS_TYPE_UINT32,
|
|
&snap_id);
|
|
if (!ok) {
|
|
talloc_free(conf_encoded);
|
|
dbus_message_unref(msg);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
dbus_message_iter_close_container(&args, &array_iter);
|
|
*req_msg_out = msg;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_del_snap_unpack(DBusConnection *conn,
|
|
DBusMessage *rsp_msg)
|
|
{
|
|
int msg_type;
|
|
const char *sig;
|
|
|
|
msg_type = dbus_message_get_type(rsp_msg);
|
|
if (msg_type == DBUS_MESSAGE_TYPE_ERROR) {
|
|
const char *err_str = dbus_message_get_error_name(rsp_msg);
|
|
DEBUG(0, ("del snap error response: %s\n", err_str));
|
|
return snapper_err_ntstatus_map(err_str);
|
|
}
|
|
|
|
if (msg_type != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
|
|
DEBUG(0, ("unexpected del snap ret type: %d\n",
|
|
msg_type));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
sig = dbus_message_get_signature(rsp_msg);
|
|
if ((sig == NULL)
|
|
|| (strcmp(sig, SNAPPER_SIG_DEL_SNAPS_RSP) != 0)) {
|
|
DEBUG(0, ("bad create snap response sig: %s, expected: %s\n",
|
|
(sig ? sig : "NULL"), SNAPPER_SIG_DEL_SNAPS_RSP));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* no parameters in response */
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_list_snaps_at_time_pack(TALLOC_CTX *mem_ctx,
|
|
const char *snapper_conf,
|
|
time_t time_lower,
|
|
time_t time_upper,
|
|
DBusMessage **req_msg_out)
|
|
{
|
|
DBusMessage *msg;
|
|
DBusMessageIter args;
|
|
char *conf_encoded;
|
|
NTSTATUS status;
|
|
|
|
msg = dbus_message_new_method_call("org.opensuse.Snapper",
|
|
"/org/opensuse/Snapper",
|
|
"org.opensuse.Snapper",
|
|
"ListSnapshotsAtTime");
|
|
if (msg == NULL) {
|
|
DEBUG(0, ("failed to create list snaps message\n"));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = snapper_dbus_str_encode(mem_ctx, snapper_conf, &conf_encoded);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
dbus_message_unref(msg);
|
|
return status;
|
|
}
|
|
|
|
dbus_message_iter_init_append(msg, &args);
|
|
if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
|
|
&conf_encoded)) {
|
|
talloc_free(conf_encoded);
|
|
dbus_message_unref(msg);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_INT64,
|
|
&time_lower)) {
|
|
talloc_free(conf_encoded);
|
|
dbus_message_unref(msg);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_INT64,
|
|
&time_upper)) {
|
|
talloc_free(conf_encoded);
|
|
dbus_message_unref(msg);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
*req_msg_out = msg;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
/* no snapper_list_snaps_at_time_unpack, use snapper_list_snaps_unpack */
|
|
|
|
/*
|
|
* Determine the snapper snapshot id given a path.
|
|
* Ideally this should be determined via a lookup.
|
|
*/
|
|
static NTSTATUS snapper_snap_path_to_id(TALLOC_CTX *mem_ctx,
|
|
const char *snap_path,
|
|
uint32_t *snap_id_out)
|
|
{
|
|
char *path_dup;
|
|
char *str_idx;
|
|
uint32_t snap_id;
|
|
int error = 0;
|
|
|
|
path_dup = talloc_strdup(mem_ctx, snap_path);
|
|
if (path_dup == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
/* trim trailing '/' */
|
|
str_idx = path_dup + strlen(path_dup) - 1;
|
|
while (*str_idx == '/') {
|
|
*str_idx = '\0';
|
|
str_idx--;
|
|
}
|
|
|
|
str_idx = strrchr(path_dup, '/');
|
|
if ((str_idx == NULL)
|
|
|| (strcmp(str_idx + 1, "snapshot") != 0)) {
|
|
talloc_free(path_dup);
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
while (*str_idx == '/') {
|
|
*str_idx = '\0';
|
|
str_idx--;
|
|
}
|
|
|
|
str_idx = strrchr(path_dup, '/');
|
|
if (str_idx == NULL) {
|
|
talloc_free(path_dup);
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
str_idx++;
|
|
snap_id = smb_strtoul(str_idx, NULL, 10, &error, SMB_STR_STANDARD);
|
|
if (error != 0) {
|
|
talloc_free(path_dup);
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
talloc_free(path_dup);
|
|
*snap_id_out = snap_id;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*
|
|
* Determine the snapper snapshot path given an id and base.
|
|
* Ideally this should be determined via a lookup.
|
|
*/
|
|
static NTSTATUS snapper_snap_id_to_path(TALLOC_CTX *mem_ctx,
|
|
const char *base_path,
|
|
uint32_t snap_id,
|
|
char **snap_path_out)
|
|
{
|
|
char *snap_path;
|
|
|
|
snap_path = talloc_asprintf(mem_ctx, "%s/.snapshots/%u/snapshot",
|
|
base_path, snap_id);
|
|
if (snap_path == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
*snap_path_out = snap_path;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_get_conf_call(TALLOC_CTX *mem_ctx,
|
|
DBusConnection *dconn,
|
|
const char *path,
|
|
char **conf_name_out,
|
|
char **base_path_out)
|
|
{
|
|
NTSTATUS status;
|
|
DBusMessage *req_msg;
|
|
DBusMessage *rsp_msg;
|
|
uint32_t num_confs = 0;
|
|
struct snapper_conf *confs = NULL;
|
|
struct snapper_conf *conf;
|
|
char *conf_name;
|
|
char *base_path;
|
|
|
|
status = snapper_list_confs_pack(&req_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_out;
|
|
}
|
|
|
|
status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_req_free;
|
|
}
|
|
|
|
status = snapper_list_confs_unpack(mem_ctx, dconn, rsp_msg,
|
|
&num_confs, &confs);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_rsp_free;
|
|
}
|
|
|
|
/*
|
|
* for now we only support shares where the path directly corresponds
|
|
* to a snapper configuration.
|
|
*/
|
|
conf = snapper_conf_array_base_find(num_confs, confs,
|
|
path);
|
|
if (conf == NULL) {
|
|
status = NT_STATUS_NOT_SUPPORTED;
|
|
goto err_array_free;
|
|
}
|
|
|
|
conf_name = talloc_strdup(mem_ctx, conf->name);
|
|
if (conf_name == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto err_array_free;
|
|
}
|
|
base_path = talloc_strdup(mem_ctx, conf->mnt);
|
|
if (base_path == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto err_conf_name_free;
|
|
}
|
|
|
|
talloc_free(confs);
|
|
dbus_message_unref(rsp_msg);
|
|
dbus_message_unref(req_msg);
|
|
|
|
*conf_name_out = conf_name;
|
|
*base_path_out = base_path;
|
|
|
|
return NT_STATUS_OK;
|
|
|
|
err_conf_name_free:
|
|
talloc_free(conf_name);
|
|
err_array_free:
|
|
talloc_free(confs);
|
|
err_rsp_free:
|
|
dbus_message_unref(rsp_msg);
|
|
err_req_free:
|
|
dbus_message_unref(req_msg);
|
|
err_out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Check whether a path can be shadow copied. Return the base volume, allowing
|
|
* the caller to determine if multiple paths lie on the same base volume.
|
|
*/
|
|
static NTSTATUS snapper_snap_check_path(struct vfs_handle_struct *handle,
|
|
TALLOC_CTX *mem_ctx,
|
|
const char *service_path,
|
|
char **base_volume)
|
|
{
|
|
NTSTATUS status;
|
|
DBusConnection *dconn;
|
|
char *conf_name;
|
|
char *base_path;
|
|
|
|
dconn = snapper_dbus_conn_create();
|
|
if (dconn == NULL) {
|
|
return NT_STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
status = snapper_get_conf_call(mem_ctx, dconn, service_path,
|
|
&conf_name, &base_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_conn_close;
|
|
}
|
|
|
|
talloc_free(conf_name);
|
|
*base_volume = base_path;
|
|
snapper_dbus_conn_destroy(dconn);
|
|
|
|
return NT_STATUS_OK;
|
|
|
|
err_conn_close:
|
|
snapper_dbus_conn_destroy(dconn);
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS snapper_create_snap_call(TALLOC_CTX *mem_ctx,
|
|
DBusConnection *dconn,
|
|
const char *conf_name,
|
|
const char *base_path,
|
|
const char *snap_desc,
|
|
uint32_t num_user_data,
|
|
struct snapper_dict *user_data,
|
|
char **snap_path_out)
|
|
{
|
|
NTSTATUS status;
|
|
DBusMessage *req_msg;
|
|
DBusMessage *rsp_msg;
|
|
uint32_t snap_id = 0;
|
|
char *snap_path;
|
|
|
|
status = snapper_create_snap_pack(mem_ctx,
|
|
conf_name,
|
|
snap_desc,
|
|
num_user_data,
|
|
user_data,
|
|
&req_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_out;
|
|
}
|
|
|
|
status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_req_free;
|
|
}
|
|
|
|
status = snapper_create_snap_unpack(dconn, rsp_msg, &snap_id);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_rsp_free;
|
|
}
|
|
|
|
status = snapper_snap_id_to_path(mem_ctx, base_path, snap_id,
|
|
&snap_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_rsp_free;
|
|
}
|
|
|
|
dbus_message_unref(rsp_msg);
|
|
dbus_message_unref(req_msg);
|
|
|
|
DEBUG(6, ("created new snapshot %u at %s\n", snap_id, snap_path));
|
|
*snap_path_out = snap_path;
|
|
|
|
return NT_STATUS_OK;
|
|
|
|
err_rsp_free:
|
|
dbus_message_unref(rsp_msg);
|
|
err_req_free:
|
|
dbus_message_unref(req_msg);
|
|
err_out:
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS snapper_snap_create(struct vfs_handle_struct *handle,
|
|
TALLOC_CTX *mem_ctx,
|
|
const char *base_volume,
|
|
time_t *tstamp,
|
|
bool rw,
|
|
char **_base_path,
|
|
char **_snap_path)
|
|
{
|
|
DBusConnection *dconn;
|
|
NTSTATUS status;
|
|
char *conf_name;
|
|
char *base_path;
|
|
char *snap_path = NULL;
|
|
TALLOC_CTX *tmp_ctx;
|
|
|
|
tmp_ctx = talloc_new(mem_ctx);
|
|
if (tmp_ctx == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
dconn = snapper_dbus_conn_create();
|
|
if (dconn == NULL) {
|
|
talloc_free(tmp_ctx);
|
|
return NT_STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
status = snapper_get_conf_call(tmp_ctx, dconn, base_volume,
|
|
&conf_name, &base_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
snapper_dbus_conn_destroy(dconn);
|
|
talloc_free(tmp_ctx);
|
|
return status;
|
|
}
|
|
|
|
status = snapper_create_snap_call(tmp_ctx, dconn,
|
|
conf_name, base_path,
|
|
"Snapshot created by Samba",
|
|
0, NULL,
|
|
&snap_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
snapper_dbus_conn_destroy(dconn);
|
|
talloc_free(tmp_ctx);
|
|
return status;
|
|
}
|
|
|
|
snapper_dbus_conn_destroy(dconn);
|
|
*_base_path = talloc_steal(mem_ctx, base_path);
|
|
*_snap_path = talloc_steal(mem_ctx, snap_path);
|
|
talloc_free(tmp_ctx);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS snapper_delete_snap_call(TALLOC_CTX *mem_ctx,
|
|
DBusConnection *dconn,
|
|
const char *conf_name,
|
|
uint32_t snap_id)
|
|
{
|
|
NTSTATUS status;
|
|
DBusMessage *req_msg = NULL;
|
|
DBusMessage *rsp_msg;
|
|
|
|
status = snapper_del_snap_pack(mem_ctx, conf_name, snap_id, &req_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_out;
|
|
}
|
|
|
|
status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_req_free;
|
|
}
|
|
|
|
status = snapper_del_snap_unpack(dconn, rsp_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_rsp_free;
|
|
}
|
|
|
|
dbus_message_unref(rsp_msg);
|
|
dbus_message_unref(req_msg);
|
|
|
|
DEBUG(6, ("deleted snapshot %u\n", snap_id));
|
|
|
|
return NT_STATUS_OK;
|
|
|
|
err_rsp_free:
|
|
dbus_message_unref(rsp_msg);
|
|
err_req_free:
|
|
dbus_message_unref(req_msg);
|
|
err_out:
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS snapper_snap_delete(struct vfs_handle_struct *handle,
|
|
TALLOC_CTX *mem_ctx,
|
|
char *base_path,
|
|
char *snap_path)
|
|
{
|
|
DBusConnection *dconn;
|
|
NTSTATUS status;
|
|
char *conf_name;
|
|
char *snap_base_path;
|
|
uint32_t snap_id;
|
|
TALLOC_CTX *tmp_ctx;
|
|
|
|
tmp_ctx = talloc_new(mem_ctx);
|
|
if (tmp_ctx == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
dconn = snapper_dbus_conn_create();
|
|
if (dconn == NULL) {
|
|
talloc_free(tmp_ctx);
|
|
return NT_STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
status = snapper_get_conf_call(tmp_ctx, dconn, base_path,
|
|
&conf_name, &snap_base_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
snapper_dbus_conn_destroy(dconn);
|
|
talloc_free(tmp_ctx);
|
|
return status;
|
|
}
|
|
|
|
status = snapper_snap_path_to_id(tmp_ctx, snap_path, &snap_id);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
snapper_dbus_conn_destroy(dconn);
|
|
talloc_free(tmp_ctx);
|
|
return status;
|
|
}
|
|
|
|
status = snapper_delete_snap_call(tmp_ctx, dconn, conf_name, snap_id);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
snapper_dbus_conn_destroy(dconn);
|
|
talloc_free(tmp_ctx);
|
|
return status;
|
|
}
|
|
|
|
snapper_dbus_conn_destroy(dconn);
|
|
talloc_free(tmp_ctx);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/* sc_data used as parent talloc context for all labels */
|
|
static int snapper_get_shadow_copy_data(struct vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
struct shadow_copy_data *sc_data,
|
|
bool labels)
|
|
{
|
|
DBusConnection *dconn;
|
|
TALLOC_CTX *tmp_ctx;
|
|
NTSTATUS status;
|
|
char *conf_name;
|
|
char *base_path;
|
|
DBusMessage *req_msg = NULL;
|
|
DBusMessage *rsp_msg;
|
|
uint32_t num_snaps;
|
|
struct snapper_snap *snaps;
|
|
uint32_t i;
|
|
uint32_t lbl_off;
|
|
|
|
tmp_ctx = talloc_new(sc_data);
|
|
if (tmp_ctx == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto err_out;
|
|
}
|
|
|
|
dconn = snapper_dbus_conn_create();
|
|
if (dconn == NULL) {
|
|
status = NT_STATUS_UNSUCCESSFUL;
|
|
goto err_mem_ctx_free;
|
|
}
|
|
|
|
if (fsp->conn->connectpath == NULL) {
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto err_conn_free;
|
|
}
|
|
|
|
status = snapper_get_conf_call(tmp_ctx, dconn,
|
|
fsp->conn->connectpath,
|
|
&conf_name,
|
|
&base_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_conn_free;
|
|
}
|
|
|
|
status = snapper_list_snaps_pack(tmp_ctx, conf_name, &req_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_conn_free;
|
|
}
|
|
|
|
status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_req_free;
|
|
}
|
|
|
|
status = snapper_list_snaps_unpack(tmp_ctx, rsp_msg,
|
|
&num_snaps, &snaps);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_rsp_free;
|
|
}
|
|
/* we should always get at least one snapshot (current) */
|
|
if (num_snaps == 0) {
|
|
DEBUG(1, ("zero snapshots in snap list response\n"));
|
|
status = NT_STATUS_UNSUCCESSFUL;
|
|
goto err_rsp_free;
|
|
}
|
|
|
|
/* subtract 1, (current) snapshot is not returned */
|
|
sc_data->num_volumes = num_snaps - 1;
|
|
sc_data->labels = NULL;
|
|
|
|
if ((labels == false) || (sc_data->num_volumes == 0)) {
|
|
/* tokens need not be added to the labels array */
|
|
goto done;
|
|
}
|
|
|
|
sc_data->labels = talloc_array(sc_data, SHADOW_COPY_LABEL,
|
|
sc_data->num_volumes);
|
|
if (sc_data->labels == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto err_rsp_free;
|
|
}
|
|
|
|
/* start at end for decending order, do not include 0 (current) */
|
|
lbl_off = 0;
|
|
for (i = num_snaps - 1; i > 0; i--) {
|
|
char *lbl = sc_data->labels[lbl_off++];
|
|
struct tm gmt_snap_time;
|
|
struct tm *tm_ret;
|
|
size_t str_sz;
|
|
|
|
tm_ret = gmtime_r((time_t *)&snaps[i].time, &gmt_snap_time);
|
|
if (tm_ret == NULL) {
|
|
status = NT_STATUS_UNSUCCESSFUL;
|
|
goto err_labels_free;
|
|
}
|
|
str_sz = strftime(lbl, sizeof(SHADOW_COPY_LABEL),
|
|
"@GMT-%Y.%m.%d-%H.%M.%S", &gmt_snap_time);
|
|
if (str_sz == 0) {
|
|
status = NT_STATUS_UNSUCCESSFUL;
|
|
goto err_labels_free;
|
|
}
|
|
}
|
|
|
|
done:
|
|
talloc_free(tmp_ctx);
|
|
dbus_message_unref(rsp_msg);
|
|
dbus_message_unref(req_msg);
|
|
snapper_dbus_conn_destroy(dconn);
|
|
|
|
return 0;
|
|
|
|
err_labels_free:
|
|
TALLOC_FREE(sc_data->labels);
|
|
err_rsp_free:
|
|
dbus_message_unref(rsp_msg);
|
|
err_req_free:
|
|
dbus_message_unref(req_msg);
|
|
err_conn_free:
|
|
snapper_dbus_conn_destroy(dconn);
|
|
err_mem_ctx_free:
|
|
talloc_free(tmp_ctx);
|
|
err_out:
|
|
errno = map_errno_from_nt_status(status);
|
|
return -1;
|
|
}
|
|
|
|
static bool snapper_gmt_strip_snapshot(TALLOC_CTX *mem_ctx,
|
|
struct vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
time_t *ptimestamp,
|
|
char **pstripped)
|
|
{
|
|
char *stripped;
|
|
|
|
if (smb_fname->twrp == 0) {
|
|
goto no_snapshot;
|
|
}
|
|
|
|
if (pstripped != NULL) {
|
|
stripped = talloc_strdup(mem_ctx, smb_fname->base_name);
|
|
if (stripped == NULL) {
|
|
return false;
|
|
}
|
|
*pstripped = stripped;
|
|
}
|
|
|
|
*ptimestamp = nt_time_to_unix(smb_fname->twrp);
|
|
return true;
|
|
no_snapshot:
|
|
*ptimestamp = 0;
|
|
return true;
|
|
}
|
|
|
|
static NTSTATUS snapper_get_snap_at_time_call(TALLOC_CTX *mem_ctx,
|
|
DBusConnection *dconn,
|
|
const char *conf_name,
|
|
const char *base_path,
|
|
time_t snaptime,
|
|
char **snap_path_out)
|
|
{
|
|
NTSTATUS status;
|
|
DBusMessage *req_msg = NULL;
|
|
DBusMessage *rsp_msg;
|
|
uint32_t num_snaps;
|
|
struct snapper_snap *snaps;
|
|
char *snap_path;
|
|
|
|
status = snapper_list_snaps_at_time_pack(mem_ctx,
|
|
conf_name,
|
|
snaptime,
|
|
snaptime,
|
|
&req_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_out;
|
|
}
|
|
|
|
status = snapper_dbus_msg_xchng(dconn, req_msg, &rsp_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_req_free;
|
|
}
|
|
|
|
status = snapper_list_snaps_unpack(mem_ctx, rsp_msg,
|
|
&num_snaps, &snaps);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_rsp_free;
|
|
}
|
|
|
|
if (num_snaps == 0) {
|
|
DEBUG(4, ("no snapshots found with time: %lu\n",
|
|
(unsigned long)snaptime));
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto err_snap_array_free;
|
|
} else if (num_snaps > 0) {
|
|
DEBUG(4, ("got %u snapshots for single time %lu, using top\n",
|
|
num_snaps, (unsigned long)snaptime));
|
|
}
|
|
|
|
status = snapper_snap_id_to_path(mem_ctx, base_path, snaps[0].id,
|
|
&snap_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_snap_array_free;
|
|
}
|
|
|
|
*snap_path_out = snap_path;
|
|
err_snap_array_free:
|
|
talloc_free(snaps);
|
|
err_rsp_free:
|
|
dbus_message_unref(rsp_msg);
|
|
err_req_free:
|
|
dbus_message_unref(req_msg);
|
|
err_out:
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS snapper_snap_path_expand(struct connection_struct *conn,
|
|
TALLOC_CTX *mem_ctx,
|
|
time_t snap_time,
|
|
char **snap_dir_out)
|
|
{
|
|
DBusConnection *dconn;
|
|
NTSTATUS status;
|
|
char *conf_name;
|
|
char *base_path;
|
|
char *snap_path = NULL;
|
|
|
|
dconn = snapper_dbus_conn_create();
|
|
if (dconn == NULL) {
|
|
status = NT_STATUS_UNSUCCESSFUL;
|
|
goto err_out;
|
|
}
|
|
|
|
if (conn->connectpath == NULL) {
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto err_conn_free;
|
|
}
|
|
|
|
status = snapper_get_conf_call(mem_ctx, dconn,
|
|
conn->connectpath,
|
|
&conf_name,
|
|
&base_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_conn_free;
|
|
}
|
|
|
|
status = snapper_get_snap_at_time_call(mem_ctx, dconn,
|
|
conf_name, base_path, snap_time,
|
|
&snap_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto err_conf_name_free;
|
|
}
|
|
|
|
/* confirm snapshot path is nested under base path */
|
|
if (strncmp(snap_path, base_path, strlen(base_path)) != 0) {
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto err_snap_path_free;
|
|
}
|
|
|
|
talloc_free(conf_name);
|
|
talloc_free(base_path);
|
|
snapper_dbus_conn_destroy(dconn);
|
|
*snap_dir_out = snap_path;
|
|
|
|
return NT_STATUS_OK;
|
|
|
|
err_snap_path_free:
|
|
talloc_free(snap_path);
|
|
err_conf_name_free:
|
|
talloc_free(conf_name);
|
|
talloc_free(base_path);
|
|
err_conn_free:
|
|
snapper_dbus_conn_destroy(dconn);
|
|
err_out:
|
|
return status;
|
|
}
|
|
|
|
static char *snapper_gmt_convert(TALLOC_CTX *mem_ctx,
|
|
struct vfs_handle_struct *handle,
|
|
const char *name, time_t timestamp)
|
|
{
|
|
char *snap_path = NULL;
|
|
char *path = NULL;
|
|
NTSTATUS status;
|
|
int saved_errno;
|
|
|
|
status = snapper_snap_path_expand(handle->conn, mem_ctx, timestamp,
|
|
&snap_path);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
errno = map_errno_from_nt_status(status);
|
|
goto err_out;
|
|
}
|
|
|
|
path = talloc_asprintf(mem_ctx, "%s/%s", snap_path, name);
|
|
if (path == NULL) {
|
|
errno = ENOMEM;
|
|
goto err_snap_path_free;
|
|
}
|
|
|
|
DEBUG(10, ("converted %s/%s @ time to %s\n",
|
|
handle->conn->connectpath, name, path));
|
|
return path;
|
|
|
|
err_snap_path_free:
|
|
saved_errno = errno;
|
|
talloc_free(snap_path);
|
|
errno = saved_errno;
|
|
err_out:
|
|
return NULL;
|
|
}
|
|
|
|
static int snapper_gmt_renameat(vfs_handle_struct *handle,
|
|
files_struct *srcfsp,
|
|
const struct smb_filename *smb_fname_src,
|
|
files_struct *dstfsp,
|
|
const struct smb_filename *smb_fname_dst)
|
|
{
|
|
time_t timestamp_src, timestamp_dst;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname_src,
|
|
×tamp_src, NULL)) {
|
|
return -1;
|
|
}
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname_dst,
|
|
×tamp_dst, NULL)) {
|
|
return -1;
|
|
}
|
|
if (timestamp_src != 0) {
|
|
errno = EXDEV;
|
|
return -1;
|
|
}
|
|
if (timestamp_dst != 0) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_RENAMEAT(handle,
|
|
srcfsp,
|
|
smb_fname_src,
|
|
dstfsp,
|
|
smb_fname_dst);
|
|
}
|
|
|
|
static int snapper_gmt_symlinkat(vfs_handle_struct *handle,
|
|
const struct smb_filename *link_contents,
|
|
struct files_struct *dirfsp,
|
|
const struct smb_filename *new_smb_fname)
|
|
{
|
|
time_t timestamp_old = 0;
|
|
time_t timestamp_new = 0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
link_contents,
|
|
×tamp_old,
|
|
NULL)) {
|
|
return -1;
|
|
}
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
new_smb_fname,
|
|
×tamp_new,
|
|
NULL)) {
|
|
return -1;
|
|
}
|
|
if ((timestamp_old != 0) || (timestamp_new != 0)) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_SYMLINKAT(handle,
|
|
link_contents,
|
|
dirfsp,
|
|
new_smb_fname);
|
|
}
|
|
|
|
static int snapper_gmt_linkat(vfs_handle_struct *handle,
|
|
files_struct *srcfsp,
|
|
const struct smb_filename *old_smb_fname,
|
|
files_struct *dstfsp,
|
|
const struct smb_filename *new_smb_fname,
|
|
int flags)
|
|
{
|
|
time_t timestamp_old = 0;
|
|
time_t timestamp_new = 0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
old_smb_fname,
|
|
×tamp_old,
|
|
NULL)) {
|
|
return -1;
|
|
}
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
new_smb_fname,
|
|
×tamp_new,
|
|
NULL)) {
|
|
return -1;
|
|
}
|
|
if ((timestamp_old != 0) || (timestamp_new != 0)) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_LINKAT(handle,
|
|
srcfsp,
|
|
old_smb_fname,
|
|
dstfsp,
|
|
new_smb_fname,
|
|
flags);
|
|
}
|
|
|
|
static int snapper_gmt_stat(vfs_handle_struct *handle,
|
|
struct smb_filename *smb_fname)
|
|
{
|
|
time_t timestamp;
|
|
char *stripped, *tmp;
|
|
int ret, saved_errno;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_STAT(handle, smb_fname);
|
|
}
|
|
|
|
tmp = smb_fname->base_name;
|
|
smb_fname->base_name = snapper_gmt_convert(talloc_tos(), handle,
|
|
stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
|
|
if (smb_fname->base_name == NULL) {
|
|
smb_fname->base_name = tmp;
|
|
return -1;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
|
|
saved_errno = errno;
|
|
|
|
TALLOC_FREE(smb_fname->base_name);
|
|
smb_fname->base_name = tmp;
|
|
|
|
errno = saved_errno;
|
|
return ret;
|
|
}
|
|
|
|
static int snapper_gmt_lstat(vfs_handle_struct *handle,
|
|
struct smb_filename *smb_fname)
|
|
{
|
|
time_t timestamp;
|
|
char *stripped, *tmp;
|
|
int ret, saved_errno;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
|
|
}
|
|
|
|
tmp = smb_fname->base_name;
|
|
smb_fname->base_name = snapper_gmt_convert(talloc_tos(), handle,
|
|
stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
|
|
if (smb_fname->base_name == NULL) {
|
|
smb_fname->base_name = tmp;
|
|
return -1;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
|
|
saved_errno = errno;
|
|
|
|
TALLOC_FREE(smb_fname->base_name);
|
|
smb_fname->base_name = tmp;
|
|
|
|
errno = saved_errno;
|
|
return ret;
|
|
}
|
|
|
|
static int snapper_gmt_openat(struct vfs_handle_struct *handle,
|
|
const struct files_struct *dirfsp,
|
|
const struct smb_filename *smb_fname_in,
|
|
struct files_struct *fsp,
|
|
int flags,
|
|
mode_t mode)
|
|
{
|
|
struct smb_filename *smb_fname = NULL;
|
|
time_t timestamp;
|
|
char *stripped = NULL;
|
|
int ret;
|
|
int saved_errno = 0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname_in,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_OPENAT(handle,
|
|
dirfsp,
|
|
smb_fname_in,
|
|
fsp,
|
|
flags,
|
|
mode);
|
|
}
|
|
|
|
smb_fname = cp_smb_filename(talloc_tos(), smb_fname_in);
|
|
if (smb_fname == NULL) {
|
|
TALLOC_FREE(stripped);
|
|
return -1;
|
|
}
|
|
|
|
smb_fname->base_name = snapper_gmt_convert(smb_fname, handle,
|
|
stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
|
|
if (smb_fname->base_name == NULL) {
|
|
TALLOC_FREE(smb_fname);
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_OPENAT(handle, dirfsp, smb_fname, fsp, flags, mode);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(smb_fname);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int snapper_gmt_unlinkat(vfs_handle_struct *handle,
|
|
struct files_struct *dirfsp,
|
|
const struct smb_filename *smb_fname,
|
|
int flags)
|
|
{
|
|
time_t timestamp = 0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname,
|
|
×tamp, NULL)) {
|
|
return -1;
|
|
}
|
|
if (timestamp != 0) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_UNLINKAT(handle,
|
|
dirfsp,
|
|
smb_fname,
|
|
flags);
|
|
}
|
|
|
|
static int snapper_gmt_fchmod(vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
mode_t mode)
|
|
{
|
|
time_t timestamp = 0;
|
|
const struct smb_filename *smb_fname = NULL;
|
|
|
|
smb_fname = fsp->fsp_name;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname,
|
|
×tamp,
|
|
NULL)) {
|
|
return -1;
|
|
}
|
|
|
|
if (timestamp != 0) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
|
|
}
|
|
|
|
static int snapper_gmt_chdir(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int ret;
|
|
int saved_errno = 0;
|
|
char *conv = NULL;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_CHDIR(handle, smb_fname);
|
|
}
|
|
conv = snapper_gmt_convert(talloc_tos(), handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv == NULL) {
|
|
return -1;
|
|
}
|
|
conv_smb_fname = synthetic_smb_fname(talloc_tos(),
|
|
conv,
|
|
NULL,
|
|
NULL,
|
|
0,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_CHDIR(handle, conv_smb_fname);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv);
|
|
TALLOC_FREE(conv_smb_fname);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int snapper_gmt_fntimes(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
struct smb_file_time *ft)
|
|
{
|
|
time_t timestamp = 0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
fsp->fsp_name,
|
|
×tamp,
|
|
NULL)) {
|
|
return -1;
|
|
}
|
|
|
|
if (timestamp != 0) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
|
|
return SMB_VFS_NEXT_FNTIMES(handle, fsp, ft);
|
|
}
|
|
|
|
static int snapper_gmt_readlinkat(vfs_handle_struct *handle,
|
|
const struct files_struct *dirfsp,
|
|
const struct smb_filename *smb_fname,
|
|
char *buf,
|
|
size_t bufsiz)
|
|
{
|
|
time_t timestamp = 0;
|
|
int ret;
|
|
int saved_errno = 0;
|
|
struct smb_filename *full_fname = NULL;
|
|
|
|
/*
|
|
* Now this function only looks at smb_fname->twrp
|
|
* we don't need to copy out the path. Just use
|
|
* smb_fname->base_name directly.
|
|
*/
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname,
|
|
×tamp, NULL)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_READLINKAT(handle,
|
|
dirfsp,
|
|
smb_fname,
|
|
buf,
|
|
bufsiz);
|
|
}
|
|
full_fname = full_path_from_dirfsp_atname(talloc_tos(),
|
|
dirfsp,
|
|
smb_fname);
|
|
if (full_fname == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
/* Find the snapshot path from the full pathname. */
|
|
full_fname->base_name = snapper_gmt_convert(full_fname,
|
|
handle,
|
|
full_fname->base_name,
|
|
timestamp);
|
|
if (full_fname->base_name == NULL) {
|
|
TALLOC_FREE(full_fname);
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_READLINKAT(handle,
|
|
handle->conn->cwd_fsp,
|
|
full_fname,
|
|
buf,
|
|
bufsiz);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(full_fname);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int snapper_gmt_mknodat(vfs_handle_struct *handle,
|
|
files_struct *dirfsp,
|
|
const struct smb_filename *smb_fname,
|
|
mode_t mode,
|
|
SMB_DEV_T dev)
|
|
{
|
|
time_t timestamp = (time_t)0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname,
|
|
×tamp, NULL)) {
|
|
return -1;
|
|
}
|
|
if (timestamp != 0) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_MKNODAT(handle,
|
|
dirfsp,
|
|
smb_fname,
|
|
mode,
|
|
dev);
|
|
}
|
|
|
|
static struct smb_filename *snapper_gmt_realpath(vfs_handle_struct *handle,
|
|
TALLOC_CTX *ctx,
|
|
const struct smb_filename *smb_fname)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
struct smb_filename *result_fname = NULL;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
int saved_errno = 0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname,
|
|
×tamp, &stripped)) {
|
|
goto done;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_REALPATH(handle, ctx, smb_fname);
|
|
}
|
|
|
|
conv_smb_fname = cp_smb_filename(talloc_tos(), smb_fname);
|
|
if (conv_smb_fname == NULL) {
|
|
goto done;
|
|
}
|
|
conv_smb_fname->base_name = snapper_gmt_convert(conv_smb_fname, handle,
|
|
stripped, timestamp);
|
|
if (conv_smb_fname->base_name == NULL) {
|
|
goto done;
|
|
}
|
|
|
|
result_fname = SMB_VFS_NEXT_REALPATH(handle, ctx, conv_smb_fname);
|
|
|
|
done:
|
|
if (result_fname == NULL) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_smb_fname);
|
|
TALLOC_FREE(stripped);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return result_fname;
|
|
}
|
|
|
|
static int snapper_gmt_mkdirat(vfs_handle_struct *handle,
|
|
struct files_struct *dirfsp,
|
|
const struct smb_filename *fname,
|
|
mode_t mode)
|
|
{
|
|
time_t timestamp = 0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle, fname,
|
|
×tamp, NULL)) {
|
|
return -1;
|
|
}
|
|
if (timestamp != 0) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_MKDIRAT(handle,
|
|
dirfsp,
|
|
fname,
|
|
mode);
|
|
}
|
|
|
|
static int snapper_gmt_fchflags(vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
unsigned int flags)
|
|
{
|
|
time_t timestamp = 0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
fsp->fsp_name, ×tamp, NULL)) {
|
|
return -1;
|
|
}
|
|
if (timestamp != 0) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_FCHFLAGS(handle, fsp, flags);
|
|
}
|
|
|
|
static int snapper_gmt_fsetxattr(struct vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
const char *aname, const void *value,
|
|
size_t size, int flags)
|
|
{
|
|
time_t timestamp = 0;
|
|
const struct smb_filename *smb_fname = NULL;
|
|
|
|
smb_fname = fsp->fsp_name;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname,
|
|
×tamp,
|
|
NULL)) {
|
|
return -1;
|
|
}
|
|
if (timestamp != 0) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_FSETXATTR(handle, fsp,
|
|
aname, value, size, flags);
|
|
}
|
|
|
|
static NTSTATUS snapper_gmt_get_real_filename(
|
|
struct vfs_handle_struct *handle,
|
|
const struct smb_filename *fpath,
|
|
const char *name,
|
|
TALLOC_CTX *mem_ctx,
|
|
char **found_name)
|
|
{
|
|
time_t timestamp;
|
|
char *stripped;
|
|
char *conv;
|
|
struct smb_filename conv_fname;
|
|
NTSTATUS status;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle, fpath,
|
|
×tamp, &stripped)) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, fpath, name,
|
|
mem_ctx, found_name);
|
|
}
|
|
if (stripped[0] == '\0') {
|
|
*found_name = talloc_strdup(mem_ctx, name);
|
|
if (*found_name == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
return NT_STATUS_OK;
|
|
}
|
|
conv = snapper_gmt_convert(talloc_tos(), handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv == NULL) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
|
|
conv_fname = (struct smb_filename) {
|
|
.base_name = conv,
|
|
};
|
|
|
|
status = SMB_VFS_NEXT_GET_REAL_FILENAME(
|
|
handle, &conv_fname, name, mem_ctx, found_name);
|
|
TALLOC_FREE(conv);
|
|
return status;
|
|
}
|
|
|
|
static uint64_t snapper_gmt_disk_free(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
uint64_t *bsize,
|
|
uint64_t *dfree,
|
|
uint64_t *dsize)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
uint64_t ret;
|
|
int saved_errno = 0;
|
|
char *conv = NULL;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname, ×tamp, &stripped)) {
|
|
return (uint64_t)-1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
|
|
bsize, dfree, dsize);
|
|
}
|
|
|
|
conv = snapper_gmt_convert(talloc_tos(), handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv == NULL) {
|
|
return (uint64_t)-1;
|
|
}
|
|
conv_smb_fname = synthetic_smb_fname(talloc_tos(),
|
|
conv,
|
|
NULL,
|
|
NULL,
|
|
0,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
errno = ENOMEM;
|
|
return (uint64_t)-1;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_DISK_FREE(handle, conv_smb_fname,
|
|
bsize, dfree, dsize);
|
|
|
|
if (ret == (uint64_t)-1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_smb_fname);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int snapper_gmt_get_quota(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
enum SMB_QUOTA_TYPE qtype,
|
|
unid_t id,
|
|
SMB_DISK_QUOTA *dq)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int ret;
|
|
int saved_errno = 0;
|
|
char *conv = NULL;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname, ×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname, qtype, id, dq);
|
|
}
|
|
|
|
conv = snapper_gmt_convert(talloc_tos(), handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv == NULL) {
|
|
return -1;
|
|
}
|
|
conv_smb_fname = synthetic_smb_fname(talloc_tos(),
|
|
conv,
|
|
NULL,
|
|
NULL,
|
|
0,
|
|
smb_fname->flags);
|
|
TALLOC_FREE(conv);
|
|
if (conv_smb_fname == NULL) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_GET_QUOTA(handle, conv_smb_fname, qtype, id, dq);
|
|
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_smb_fname);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static NTSTATUS snapper_create_dfs_pathat(struct vfs_handle_struct *handle,
|
|
struct files_struct *dirfsp,
|
|
const struct smb_filename *smb_fname,
|
|
const struct referral *reflist,
|
|
size_t referral_count)
|
|
{
|
|
time_t timestamp = 0;
|
|
|
|
if (!snapper_gmt_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname,
|
|
×tamp,
|
|
NULL)) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
if (timestamp != 0) {
|
|
return NT_STATUS_MEDIA_WRITE_PROTECTED;
|
|
}
|
|
return SMB_VFS_NEXT_CREATE_DFS_PATHAT(handle,
|
|
dirfsp,
|
|
smb_fname,
|
|
reflist,
|
|
referral_count);
|
|
}
|
|
|
|
static struct vfs_fn_pointers snapper_fns = {
|
|
.snap_check_path_fn = snapper_snap_check_path,
|
|
.snap_create_fn = snapper_snap_create,
|
|
.snap_delete_fn = snapper_snap_delete,
|
|
.get_shadow_copy_data_fn = snapper_get_shadow_copy_data,
|
|
.create_dfs_pathat_fn = snapper_create_dfs_pathat,
|
|
.disk_free_fn = snapper_gmt_disk_free,
|
|
.get_quota_fn = snapper_gmt_get_quota,
|
|
.renameat_fn = snapper_gmt_renameat,
|
|
.linkat_fn = snapper_gmt_linkat,
|
|
.symlinkat_fn = snapper_gmt_symlinkat,
|
|
.stat_fn = snapper_gmt_stat,
|
|
.lstat_fn = snapper_gmt_lstat,
|
|
.openat_fn = snapper_gmt_openat,
|
|
.unlinkat_fn = snapper_gmt_unlinkat,
|
|
.fchmod_fn = snapper_gmt_fchmod,
|
|
.chdir_fn = snapper_gmt_chdir,
|
|
.fntimes_fn = snapper_gmt_fntimes,
|
|
.readlinkat_fn = snapper_gmt_readlinkat,
|
|
.mknodat_fn = snapper_gmt_mknodat,
|
|
.realpath_fn = snapper_gmt_realpath,
|
|
.mkdirat_fn = snapper_gmt_mkdirat,
|
|
.getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
|
|
.getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
|
|
.fsetxattr_fn = snapper_gmt_fsetxattr,
|
|
.fchflags_fn = snapper_gmt_fchflags,
|
|
.get_real_filename_fn = snapper_gmt_get_real_filename,
|
|
};
|
|
|
|
static_decl_vfs;
|
|
NTSTATUS vfs_snapper_init(TALLOC_CTX *ctx)
|
|
{
|
|
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
|
|
"snapper", &snapper_fns);
|
|
}
|