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7e1f9c9d83
Signed-off-by: Ralph Boehme <slow@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
3231 lines
76 KiB
C
3231 lines
76 KiB
C
/*
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* shadow_copy2: a shadow copy module (second implementation)
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*
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* Copyright (C) Andrew Tridgell 2007 (portions taken from shadow_copy2)
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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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* Copyright (C) Rajesh Joseph 2016
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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 2 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, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* This is a second implemetation of a shadow copy module for exposing
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* file system snapshots to windows clients as shadow copies.
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*
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* See the manual page for documentation.
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*/
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#include "includes.h"
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#include "smbd/smbd.h"
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#include "system/filesys.h"
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#include "include/ntioctl.h"
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#include "util_tdb.h"
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#include "lib/util_path.h"
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struct shadow_copy2_config {
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char *gmt_format;
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bool use_sscanf;
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bool use_localtime;
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char *snapdir;
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char *delimiter;
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bool snapdirseverywhere;
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bool crossmountpoints;
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bool fixinodes;
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char *sort_order;
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bool snapdir_absolute;
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char *mount_point;
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char *rel_connectpath; /* share root, relative to a snapshot root */
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char *snapshot_basepath; /* the absolute version of snapdir */
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};
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/* Data-structure to hold the list of snap entries */
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struct shadow_copy2_snapentry {
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char *snapname;
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char *time_fmt;
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struct shadow_copy2_snapentry *next;
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struct shadow_copy2_snapentry *prev;
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};
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struct shadow_copy2_snaplist_info {
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struct shadow_copy2_snapentry *snaplist; /* snapshot list */
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regex_t *regex; /* Regex to filter snaps */
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time_t fetch_time; /* snaplist update time */
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};
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/*
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* shadow_copy2 private structure. This structure will be
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* used to keep module specific information
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*/
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struct shadow_copy2_private {
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struct shadow_copy2_config *config;
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struct shadow_copy2_snaplist_info *snaps;
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char *shadow_cwd; /* Absolute $cwd path. */
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/* Absolute connectpath - can vary depending on $cwd. */
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char *shadow_connectpath;
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/* talloc'ed realpath return. */
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struct smb_filename *shadow_realpath;
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};
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static int shadow_copy2_get_shadow_copy_data(
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vfs_handle_struct *handle, files_struct *fsp,
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struct shadow_copy_data *shadow_copy2_data,
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bool labels);
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/**
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*This function will create a new snapshot list entry and
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* return to the caller. This entry will also be added to
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* the global snapshot list.
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*
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* @param[in] priv shadow_copy2 specific data structure
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* @return Newly created snapshot entry or NULL on failure
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*/
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static struct shadow_copy2_snapentry *shadow_copy2_create_snapentry(
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struct shadow_copy2_private *priv)
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{
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struct shadow_copy2_snapentry *tmpentry = NULL;
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tmpentry = talloc_zero(priv->snaps, struct shadow_copy2_snapentry);
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if (tmpentry == NULL) {
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DBG_ERR("talloc_zero() failed\n");
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errno = ENOMEM;
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return NULL;
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}
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DLIST_ADD(priv->snaps->snaplist, tmpentry);
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return tmpentry;
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}
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/**
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*This function will delete the entire snaplist and reset
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* priv->snaps->snaplist to NULL.
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*
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* @param[in] priv shadow_copye specific data structure
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*/
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static void shadow_copy2_delete_snaplist(struct shadow_copy2_private *priv)
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{
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struct shadow_copy2_snapentry *tmp = NULL;
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while ((tmp = priv->snaps->snaplist) != NULL) {
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DLIST_REMOVE(priv->snaps->snaplist, tmp);
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talloc_free(tmp);
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}
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}
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/**
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* Given a timestamp this function searches the global snapshot list
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* and returns the complete snapshot directory name saved in the entry.
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*
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* @param[in] priv shadow_copy2 specific structure
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* @param[in] timestamp timestamp corresponding to one of the snapshot
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* @param[out] snap_str buffer to copy the actual snapshot name
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* @param[in] len length of snap_str buffer
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*
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* @return Length of actual snapshot name, and -1 on failure
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*/
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static ssize_t shadow_copy2_saved_snapname(struct shadow_copy2_private *priv,
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struct tm *timestamp,
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char *snap_str, size_t len)
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{
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ssize_t snaptime_len = -1;
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struct shadow_copy2_snapentry *entry = NULL;
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snaptime_len = strftime(snap_str, len, GMT_FORMAT, timestamp);
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if (snaptime_len == 0) {
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DBG_ERR("strftime failed\n");
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return -1;
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}
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snaptime_len = -1;
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for (entry = priv->snaps->snaplist; entry; entry = entry->next) {
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if (strcmp(entry->time_fmt, snap_str) == 0) {
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snaptime_len = snprintf(snap_str, len, "%s",
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entry->snapname);
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return snaptime_len;
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}
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}
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snap_str[0] = 0;
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return snaptime_len;
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}
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/**
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* This function will check if snaplist is updated or not. If snaplist
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* is empty then it will create a new list. Each time snaplist is updated
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* the time is recorded. If the snapshot time is greater than the snaplist
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* update time then chances are we are working on an older list. Then discard
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* the old list and fetch a new snaplist.
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*
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* @param[in] handle VFS handle struct
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* @param[in] snap_time time of snapshot
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*
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* @return true if the list is updated else false
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*/
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static bool shadow_copy2_update_snaplist(struct vfs_handle_struct *handle,
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time_t snap_time)
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{
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int ret = -1;
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bool snaplist_updated = false;
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struct files_struct fsp = {0};
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struct smb_filename smb_fname = {0};
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double seconds = 0.0;
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struct shadow_copy2_private *priv = NULL;
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SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
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return false);
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seconds = difftime(snap_time, priv->snaps->fetch_time);
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/*
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* Fetch the snapshot list if either the snaplist is empty or the
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* required snapshot time is greater than the last fetched snaplist
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* time.
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*/
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if (seconds > 0 || (priv->snaps->snaplist == NULL)) {
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smb_fname.base_name = discard_const_p(char, ".");
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fsp.fsp_name = &smb_fname;
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ret = shadow_copy2_get_shadow_copy_data(handle, &fsp,
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NULL, false);
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if (ret == 0) {
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snaplist_updated = true;
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} else {
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DBG_ERR("Failed to get shadow copy data\n");
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}
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}
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return snaplist_updated;
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}
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static bool shadow_copy2_find_slashes(TALLOC_CTX *mem_ctx, const char *str,
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size_t **poffsets,
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unsigned *pnum_offsets)
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{
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unsigned num_offsets;
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size_t *offsets;
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const char *p;
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num_offsets = 0;
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p = str;
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while ((p = strchr(p, '/')) != NULL) {
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num_offsets += 1;
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p += 1;
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}
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offsets = talloc_array(mem_ctx, size_t, num_offsets);
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if (offsets == NULL) {
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return false;
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}
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p = str;
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num_offsets = 0;
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while ((p = strchr(p, '/')) != NULL) {
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offsets[num_offsets] = p-str;
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num_offsets += 1;
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p += 1;
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}
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*poffsets = offsets;
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*pnum_offsets = num_offsets;
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return true;
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}
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/**
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* Given a timestamp, build the posix level GMT-tag string
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* based on the configurable format.
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*/
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static ssize_t shadow_copy2_posix_gmt_string(struct vfs_handle_struct *handle,
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time_t snapshot,
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char *snaptime_string,
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size_t len)
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{
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struct tm snap_tm;
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ssize_t snaptime_len;
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struct shadow_copy2_config *config;
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struct shadow_copy2_private *priv;
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SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
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return 0);
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config = priv->config;
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if (config->use_sscanf) {
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snaptime_len = snprintf(snaptime_string,
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len,
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config->gmt_format,
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(unsigned long)snapshot);
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if (snaptime_len <= 0) {
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DEBUG(10, ("snprintf failed\n"));
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return -1;
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}
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} else {
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if (config->use_localtime) {
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if (localtime_r(&snapshot, &snap_tm) == 0) {
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DEBUG(10, ("gmtime_r failed\n"));
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return -1;
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}
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} else {
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if (gmtime_r(&snapshot, &snap_tm) == 0) {
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DEBUG(10, ("gmtime_r failed\n"));
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return -1;
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}
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}
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if (priv->snaps->regex != NULL) {
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snaptime_len = shadow_copy2_saved_snapname(priv,
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&snap_tm, snaptime_string, len);
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if (snaptime_len >= 0)
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return snaptime_len;
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/*
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* If we fail to find the snapshot name, chances are
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* that we have not updated our snaplist. Make sure the
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* snaplist is updated.
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*/
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if (!shadow_copy2_update_snaplist(handle, snapshot)) {
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DBG_DEBUG("shadow_copy2_update_snaplist "
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"failed\n");
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return -1;
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}
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return shadow_copy2_saved_snapname(priv,
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&snap_tm, snaptime_string, len);
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}
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snaptime_len = strftime(snaptime_string,
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len,
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config->gmt_format,
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&snap_tm);
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if (snaptime_len == 0) {
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DEBUG(10, ("strftime failed\n"));
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return -1;
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}
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}
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return snaptime_len;
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}
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/**
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* Given a timestamp, build the string to insert into a path
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* as a path component for creating the local path to the
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* snapshot at the given timestamp of the input path.
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*
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* In the case of a parallel snapdir (specified with an
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* absolute path), this is the inital portion of the
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* local path of any snapshot file. The complete path is
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* obtained by appending the portion of the file's path
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* below the share root's mountpoint.
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*/
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static char *shadow_copy2_insert_string(TALLOC_CTX *mem_ctx,
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struct vfs_handle_struct *handle,
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time_t snapshot)
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{
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fstring snaptime_string;
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ssize_t snaptime_len = 0;
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char *result = NULL;
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struct shadow_copy2_config *config;
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struct shadow_copy2_private *priv;
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SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
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return NULL);
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config = priv->config;
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snaptime_len = shadow_copy2_posix_gmt_string(handle,
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snapshot,
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snaptime_string,
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sizeof(snaptime_string));
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if (snaptime_len <= 0) {
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return NULL;
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}
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if (config->snapdir_absolute) {
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result = talloc_asprintf(mem_ctx, "%s/%s",
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config->snapdir, snaptime_string);
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} else {
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result = talloc_asprintf(mem_ctx, "/%s/%s",
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config->snapdir, snaptime_string);
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}
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if (result == NULL) {
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DEBUG(1, (__location__ " talloc_asprintf failed\n"));
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}
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return result;
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}
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/**
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* Build the posix snapshot path for the connection
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* at the given timestamp, i.e. the absolute posix path
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* that contains the snapshot for this file system.
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*
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* This only applies to classical case, i.e. not
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* to the "snapdirseverywhere" mode.
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*/
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static char *shadow_copy2_snapshot_path(TALLOC_CTX *mem_ctx,
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struct vfs_handle_struct *handle,
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time_t snapshot)
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{
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fstring snaptime_string;
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ssize_t snaptime_len = 0;
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char *result = NULL;
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struct shadow_copy2_private *priv;
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SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
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return NULL);
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snaptime_len = shadow_copy2_posix_gmt_string(handle,
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snapshot,
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snaptime_string,
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sizeof(snaptime_string));
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if (snaptime_len <= 0) {
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return NULL;
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}
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result = talloc_asprintf(mem_ctx, "%s/%s",
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priv->config->snapshot_basepath, snaptime_string);
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if (result == NULL) {
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DEBUG(1, (__location__ " talloc_asprintf failed\n"));
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}
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return result;
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}
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static char *make_path_absolute(TALLOC_CTX *mem_ctx,
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struct shadow_copy2_private *priv,
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const char *name)
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{
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char *newpath = NULL;
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char *abs_path = NULL;
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if (name[0] != '/') {
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newpath = talloc_asprintf(mem_ctx,
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"%s/%s",
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priv->shadow_cwd,
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name);
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if (newpath == NULL) {
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return NULL;
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}
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name = newpath;
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}
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abs_path = canonicalize_absolute_path(mem_ctx, name);
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TALLOC_FREE(newpath);
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return abs_path;
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}
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/* Return a $cwd-relative path. */
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static bool make_relative_path(const char *cwd, char *abs_path)
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{
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size_t cwd_len = strlen(cwd);
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size_t abs_len = strlen(abs_path);
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if (abs_len < cwd_len) {
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return false;
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}
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if (memcmp(abs_path, cwd, cwd_len) != 0) {
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return false;
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}
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/* The cwd_len != 1 case is for $cwd == '/' */
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if (cwd_len != 1 &&
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abs_path[cwd_len] != '/' &&
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abs_path[cwd_len] != '\0')
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{
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return false;
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}
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if (abs_path[cwd_len] == '/') {
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cwd_len++;
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}
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memmove(abs_path, &abs_path[cwd_len], abs_len + 1 - cwd_len);
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return true;
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}
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static bool shadow_copy2_snapshot_to_gmt(vfs_handle_struct *handle,
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const char *name,
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char *gmt, size_t gmt_len);
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/*
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* Check if an incoming filename is already a snapshot converted pathname.
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*
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* If so, it returns the pathname truncated at the snapshot point which
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* will be used as the connectpath.
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*/
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static int check_for_converted_path(TALLOC_CTX *mem_ctx,
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struct vfs_handle_struct *handle,
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struct shadow_copy2_private *priv,
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char *abs_path,
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bool *ppath_already_converted,
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char **pconnectpath)
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{
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size_t snapdirlen = 0;
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char *p = strstr_m(abs_path, priv->config->snapdir);
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char *q = NULL;
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char *connect_path = NULL;
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char snapshot[GMT_NAME_LEN+1];
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*ppath_already_converted = false;
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if (p == NULL) {
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/* Must at least contain shadow:snapdir. */
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return 0;
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}
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if (priv->config->snapdir[0] == '/' &&
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p != abs_path) {
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/* Absolute shadow:snapdir must be at the start. */
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return 0;
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}
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snapdirlen = strlen(priv->config->snapdir);
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if (p[snapdirlen] != '/') {
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/* shadow:snapdir must end as a separate component. */
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return 0;
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}
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if (p > abs_path && p[-1] != '/') {
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/* shadow:snapdir must start as a separate component. */
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return 0;
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}
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p += snapdirlen;
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p++; /* Move past the / */
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/*
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* Need to return up to the next path
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* component after the time.
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* This will be used as the connectpath.
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*/
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q = strchr(p, '/');
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if (q == NULL) {
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/*
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* No next path component.
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* Use entire string.
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*/
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connect_path = talloc_strdup(mem_ctx,
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abs_path);
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} else {
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connect_path = talloc_strndup(mem_ctx,
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abs_path,
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q - abs_path);
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}
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if (connect_path == NULL) {
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return ENOMEM;
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}
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|
|
/*
|
|
* Point p at the same offset in connect_path as
|
|
* it is in abs_path.
|
|
*/
|
|
|
|
p = &connect_path[p - abs_path];
|
|
|
|
/*
|
|
* Now ensure there is a time string at p.
|
|
* The SMB-format @GMT-token string is returned
|
|
* in snapshot.
|
|
*/
|
|
|
|
if (!shadow_copy2_snapshot_to_gmt(handle,
|
|
p,
|
|
snapshot,
|
|
sizeof(snapshot))) {
|
|
TALLOC_FREE(connect_path);
|
|
return 0;
|
|
}
|
|
|
|
if (pconnectpath != NULL) {
|
|
*pconnectpath = connect_path;
|
|
}
|
|
|
|
*ppath_already_converted = true;
|
|
|
|
DBG_DEBUG("path |%s| is already converted. "
|
|
"connect path = |%s|\n",
|
|
abs_path,
|
|
connect_path);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* This function does two things.
|
|
*
|
|
* 1). Checks if an incoming filename is already a
|
|
* snapshot converted pathname.
|
|
* If so, it returns the pathname truncated
|
|
* at the snapshot point which will be used
|
|
* as the connectpath, and then does an early return.
|
|
*
|
|
* 2). Checks if an incoming filename contains an
|
|
* SMB-layer @GMT- style timestamp.
|
|
* If so, it strips the timestamp, and returns
|
|
* both the timestamp and the stripped path
|
|
* (making it cwd-relative).
|
|
*/
|
|
|
|
static bool shadow_copy2_strip_snapshot_internal(TALLOC_CTX *mem_ctx,
|
|
struct vfs_handle_struct *handle,
|
|
const char *orig_name,
|
|
time_t *ptimestamp,
|
|
char **pstripped,
|
|
char **psnappath)
|
|
{
|
|
struct tm tm;
|
|
time_t timestamp = 0;
|
|
const char *p;
|
|
char *q;
|
|
char *stripped = NULL;
|
|
size_t rest_len, dst_len;
|
|
struct shadow_copy2_private *priv;
|
|
ptrdiff_t len_before_gmt;
|
|
const char *name = orig_name;
|
|
char *abs_path = NULL;
|
|
bool ret = true;
|
|
bool already_converted = false;
|
|
int err = 0;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
return false);
|
|
|
|
DEBUG(10, (__location__ ": enter path '%s'\n", name));
|
|
|
|
abs_path = make_path_absolute(mem_ctx, priv, name);
|
|
if (abs_path == NULL) {
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
name = abs_path;
|
|
|
|
DEBUG(10, (__location__ ": abs path '%s'\n", name));
|
|
|
|
err = check_for_converted_path(mem_ctx,
|
|
handle,
|
|
priv,
|
|
abs_path,
|
|
&already_converted,
|
|
psnappath);
|
|
if (err != 0) {
|
|
/* error in conversion. */
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
|
|
if (already_converted) {
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* From here we're only looking to strip an
|
|
* SMB-layer @GMT- token.
|
|
*/
|
|
|
|
p = strstr_m(name, "@GMT-");
|
|
if (p == NULL) {
|
|
DEBUG(11, ("@GMT not found\n"));
|
|
goto out;
|
|
}
|
|
if ((p > name) && (p[-1] != '/')) {
|
|
/* the GMT-token does not start a path-component */
|
|
DEBUG(10, ("not at start, p=%p, name=%p, p[-1]=%d\n",
|
|
p, name, (int)p[-1]));
|
|
goto out;
|
|
}
|
|
|
|
len_before_gmt = p - name;
|
|
|
|
q = strptime(p, GMT_FORMAT, &tm);
|
|
if (q == NULL) {
|
|
DEBUG(10, ("strptime failed\n"));
|
|
goto out;
|
|
}
|
|
tm.tm_isdst = -1;
|
|
timestamp = timegm(&tm);
|
|
if (timestamp == (time_t)-1) {
|
|
DEBUG(10, ("timestamp==-1\n"));
|
|
goto out;
|
|
}
|
|
if (q[0] == '\0') {
|
|
/*
|
|
* The name consists of only the GMT token or the GMT
|
|
* token is at the end of the path. XP seems to send
|
|
* @GMT- at the end under certain circumstances even
|
|
* with a path prefix.
|
|
*/
|
|
if (pstripped != NULL) {
|
|
if (len_before_gmt > 1) {
|
|
/*
|
|
* There is a path (and not only a slash)
|
|
* before the @GMT-. Remove the trailing
|
|
* slash character.
|
|
*/
|
|
len_before_gmt -= 1;
|
|
}
|
|
stripped = talloc_strndup(mem_ctx, name,
|
|
len_before_gmt);
|
|
if (stripped == NULL) {
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
if (orig_name[0] != '/') {
|
|
if (make_relative_path(priv->shadow_cwd,
|
|
stripped) == false) {
|
|
DEBUG(10, (__location__ ": path '%s' "
|
|
"doesn't start with cwd '%s'\n",
|
|
stripped, priv->shadow_cwd));
|
|
ret = false;
|
|
errno = ENOENT;
|
|
goto out;
|
|
}
|
|
}
|
|
*pstripped = stripped;
|
|
}
|
|
*ptimestamp = timestamp;
|
|
goto out;
|
|
}
|
|
if (q[0] != '/') {
|
|
/*
|
|
* It is not a complete path component, i.e. the path
|
|
* component continues after the gmt-token.
|
|
*/
|
|
DEBUG(10, ("q[0] = %d\n", (int)q[0]));
|
|
goto out;
|
|
}
|
|
q += 1;
|
|
|
|
rest_len = strlen(q);
|
|
dst_len = len_before_gmt + rest_len;
|
|
|
|
if (pstripped != NULL) {
|
|
stripped = talloc_array(mem_ctx, char, dst_len+1);
|
|
if (stripped == NULL) {
|
|
ret = false;
|
|
goto out;
|
|
}
|
|
if (p > name) {
|
|
memcpy(stripped, name, len_before_gmt);
|
|
}
|
|
if (rest_len > 0) {
|
|
memcpy(stripped + len_before_gmt, q, rest_len);
|
|
}
|
|
stripped[dst_len] = '\0';
|
|
if (orig_name[0] != '/') {
|
|
if (make_relative_path(priv->shadow_cwd,
|
|
stripped) == false) {
|
|
DEBUG(10, (__location__ ": path '%s' "
|
|
"doesn't start with cwd '%s'\n",
|
|
stripped, priv->shadow_cwd));
|
|
ret = false;
|
|
errno = ENOENT;
|
|
goto out;
|
|
}
|
|
}
|
|
*pstripped = stripped;
|
|
}
|
|
*ptimestamp = timestamp;
|
|
ret = true;
|
|
|
|
out:
|
|
TALLOC_FREE(abs_path);
|
|
return ret;
|
|
}
|
|
|
|
static bool shadow_copy2_strip_snapshot(TALLOC_CTX *mem_ctx,
|
|
struct vfs_handle_struct *handle,
|
|
const char *orig_name,
|
|
time_t *ptimestamp,
|
|
char **pstripped)
|
|
{
|
|
return shadow_copy2_strip_snapshot_internal(mem_ctx,
|
|
handle,
|
|
orig_name,
|
|
ptimestamp,
|
|
pstripped,
|
|
NULL);
|
|
}
|
|
|
|
static char *shadow_copy2_find_mount_point(TALLOC_CTX *mem_ctx,
|
|
vfs_handle_struct *handle)
|
|
{
|
|
char *path = talloc_strdup(mem_ctx, handle->conn->connectpath);
|
|
dev_t dev;
|
|
struct stat st;
|
|
char *p;
|
|
|
|
if (stat(path, &st) != 0) {
|
|
talloc_free(path);
|
|
return NULL;
|
|
}
|
|
|
|
dev = st.st_dev;
|
|
|
|
while ((p = strrchr(path, '/')) && p > path) {
|
|
*p = 0;
|
|
if (stat(path, &st) != 0) {
|
|
talloc_free(path);
|
|
return NULL;
|
|
}
|
|
if (st.st_dev != dev) {
|
|
*p = '/';
|
|
break;
|
|
}
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
/**
|
|
* Convert from a name as handed in via the SMB layer
|
|
* and a timestamp into the local path of the snapshot
|
|
* of the provided file at the provided time.
|
|
* Also return the path in the snapshot corresponding
|
|
* to the file's share root.
|
|
*/
|
|
static char *shadow_copy2_do_convert(TALLOC_CTX *mem_ctx,
|
|
struct vfs_handle_struct *handle,
|
|
const char *name, time_t timestamp,
|
|
size_t *snaproot_len)
|
|
{
|
|
struct smb_filename converted_fname;
|
|
char *result = NULL;
|
|
size_t *slashes = NULL;
|
|
unsigned num_slashes;
|
|
char *path = NULL;
|
|
size_t pathlen;
|
|
char *insert = NULL;
|
|
char *converted = NULL;
|
|
size_t insertlen, connectlen = 0;
|
|
int saved_errno = 0;
|
|
int i;
|
|
size_t min_offset;
|
|
struct shadow_copy2_config *config;
|
|
struct shadow_copy2_private *priv;
|
|
size_t in_share_offset = 0;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
return NULL);
|
|
|
|
config = priv->config;
|
|
|
|
DEBUG(10, ("converting '%s'\n", name));
|
|
|
|
if (!config->snapdirseverywhere) {
|
|
int ret;
|
|
char *snapshot_path;
|
|
|
|
snapshot_path = shadow_copy2_snapshot_path(talloc_tos(),
|
|
handle,
|
|
timestamp);
|
|
if (snapshot_path == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
if (config->rel_connectpath == NULL) {
|
|
converted = talloc_asprintf(mem_ctx, "%s/%s",
|
|
snapshot_path, name);
|
|
} else {
|
|
converted = talloc_asprintf(mem_ctx, "%s/%s/%s",
|
|
snapshot_path,
|
|
config->rel_connectpath,
|
|
name);
|
|
}
|
|
if (converted == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
ZERO_STRUCT(converted_fname);
|
|
converted_fname.base_name = converted;
|
|
|
|
ret = SMB_VFS_NEXT_LSTAT(handle, &converted_fname);
|
|
DEBUG(10, ("Trying[not snapdirseverywhere] %s: %d (%s)\n",
|
|
converted,
|
|
ret, ret == 0 ? "ok" : strerror(errno)));
|
|
if (ret == 0) {
|
|
DEBUG(10, ("Found %s\n", converted));
|
|
result = converted;
|
|
converted = NULL;
|
|
if (snaproot_len != NULL) {
|
|
*snaproot_len = strlen(snapshot_path);
|
|
if (config->rel_connectpath != NULL) {
|
|
*snaproot_len +=
|
|
strlen(config->rel_connectpath) + 1;
|
|
}
|
|
}
|
|
goto fail;
|
|
} else {
|
|
errno = ENOENT;
|
|
goto fail;
|
|
}
|
|
/* never reached ... */
|
|
}
|
|
|
|
connectlen = strlen(handle->conn->connectpath);
|
|
if (name[0] == 0) {
|
|
path = talloc_strdup(mem_ctx, handle->conn->connectpath);
|
|
} else {
|
|
path = talloc_asprintf(
|
|
mem_ctx, "%s/%s", handle->conn->connectpath, name);
|
|
}
|
|
if (path == NULL) {
|
|
errno = ENOMEM;
|
|
goto fail;
|
|
}
|
|
pathlen = talloc_get_size(path)-1;
|
|
|
|
if (!shadow_copy2_find_slashes(talloc_tos(), path,
|
|
&slashes, &num_slashes)) {
|
|
goto fail;
|
|
}
|
|
|
|
insert = shadow_copy2_insert_string(talloc_tos(), handle, timestamp);
|
|
if (insert == NULL) {
|
|
goto fail;
|
|
}
|
|
insertlen = talloc_get_size(insert)-1;
|
|
|
|
/*
|
|
* Note: We deliberatly don't expensively initialize the
|
|
* array with talloc_zero here: Putting zero into
|
|
* converted[pathlen+insertlen] below is sufficient, because
|
|
* in the following for loop, the insert string is inserted
|
|
* at various slash places. So the memory up to position
|
|
* pathlen+insertlen will always be initialized when the
|
|
* converted string is used.
|
|
*/
|
|
converted = talloc_array(mem_ctx, char, pathlen + insertlen + 1);
|
|
if (converted == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
if (path[pathlen-1] != '/') {
|
|
/*
|
|
* Append a fake slash to find the snapshot root
|
|
*/
|
|
size_t *tmp;
|
|
tmp = talloc_realloc(talloc_tos(), slashes,
|
|
size_t, num_slashes+1);
|
|
if (tmp == NULL) {
|
|
goto fail;
|
|
}
|
|
slashes = tmp;
|
|
slashes[num_slashes] = pathlen;
|
|
num_slashes += 1;
|
|
}
|
|
|
|
min_offset = 0;
|
|
|
|
if (!config->crossmountpoints) {
|
|
min_offset = strlen(config->mount_point);
|
|
}
|
|
|
|
memcpy(converted, path, pathlen+1);
|
|
converted[pathlen+insertlen] = '\0';
|
|
|
|
ZERO_STRUCT(converted_fname);
|
|
converted_fname.base_name = converted;
|
|
|
|
for (i = num_slashes-1; i>=0; i--) {
|
|
int ret;
|
|
size_t offset;
|
|
|
|
offset = slashes[i];
|
|
|
|
if (offset < min_offset) {
|
|
errno = ENOENT;
|
|
goto fail;
|
|
}
|
|
|
|
if (offset >= connectlen) {
|
|
in_share_offset = offset;
|
|
}
|
|
|
|
memcpy(converted+offset, insert, insertlen);
|
|
|
|
offset += insertlen;
|
|
memcpy(converted+offset, path + slashes[i],
|
|
pathlen - slashes[i]);
|
|
|
|
ret = SMB_VFS_NEXT_LSTAT(handle, &converted_fname);
|
|
|
|
DEBUG(10, ("Trying[snapdirseverywhere] %s: %d (%s)\n",
|
|
converted,
|
|
ret, ret == 0 ? "ok" : strerror(errno)));
|
|
if (ret == 0) {
|
|
/* success */
|
|
if (snaproot_len != NULL) {
|
|
*snaproot_len = in_share_offset + insertlen;
|
|
}
|
|
break;
|
|
}
|
|
if (errno == ENOTDIR) {
|
|
/*
|
|
* This is a valid condition: We appended the
|
|
* .snaphots/@GMT.. to a file name. Just try
|
|
* with the upper levels.
|
|
*/
|
|
continue;
|
|
}
|
|
if (errno != ENOENT) {
|
|
/* Other problem than "not found" */
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (i >= 0) {
|
|
/*
|
|
* Found something
|
|
*/
|
|
DEBUG(10, ("Found %s\n", converted));
|
|
result = converted;
|
|
converted = NULL;
|
|
} else {
|
|
errno = ENOENT;
|
|
}
|
|
fail:
|
|
if (result == NULL) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(converted);
|
|
TALLOC_FREE(insert);
|
|
TALLOC_FREE(slashes);
|
|
TALLOC_FREE(path);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Convert from a name as handed in via the SMB layer
|
|
* and a timestamp into the local path of the snapshot
|
|
* of the provided file at the provided time.
|
|
*/
|
|
static char *shadow_copy2_convert(TALLOC_CTX *mem_ctx,
|
|
struct vfs_handle_struct *handle,
|
|
const char *name, time_t timestamp)
|
|
{
|
|
return shadow_copy2_do_convert(mem_ctx, handle, name, timestamp, NULL);
|
|
}
|
|
|
|
/*
|
|
modify a sbuf return to ensure that inodes in the shadow directory
|
|
are different from those in the main directory
|
|
*/
|
|
static void convert_sbuf(vfs_handle_struct *handle, const char *fname,
|
|
SMB_STRUCT_STAT *sbuf)
|
|
{
|
|
struct shadow_copy2_private *priv;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
return);
|
|
|
|
if (priv->config->fixinodes) {
|
|
/* some snapshot systems, like GPFS, return the name
|
|
device:inode for the snapshot files as the current
|
|
files. That breaks the 'restore' button in the shadow copy
|
|
GUI, as the client gets a sharing violation.
|
|
|
|
This is a crude way of allowing both files to be
|
|
open at once. It has a slight chance of inode
|
|
number collision, but I can't see a better approach
|
|
without significant VFS changes
|
|
*/
|
|
TDB_DATA key = { .dptr = discard_const_p(uint8_t, fname),
|
|
.dsize = strlen(fname) };
|
|
uint32_t shash;
|
|
|
|
shash = tdb_jenkins_hash(&key) & 0xFF000000;
|
|
if (shash == 0) {
|
|
shash = 1;
|
|
}
|
|
sbuf->st_ex_ino ^= shash;
|
|
}
|
|
}
|
|
|
|
static DIR *shadow_copy2_opendir(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
const char *mask,
|
|
uint32_t attr)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
DIR *ret;
|
|
int saved_errno = 0;
|
|
char *conv;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return NULL;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_OPENDIR(handle, smb_fname, mask, attr);
|
|
}
|
|
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv == NULL) {
|
|
return NULL;
|
|
}
|
|
conv_smb_fname = synthetic_smb_fname(talloc_tos(),
|
|
conv,
|
|
NULL,
|
|
NULL,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return NULL;
|
|
}
|
|
ret = SMB_VFS_NEXT_OPENDIR(handle, conv_smb_fname, mask, attr);
|
|
if (ret == NULL) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv);
|
|
TALLOC_FREE(conv_smb_fname);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_rename(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname_src,
|
|
const struct smb_filename *smb_fname_dst)
|
|
{
|
|
time_t timestamp_src = 0;
|
|
time_t timestamp_dst = 0;
|
|
char *snappath_src = NULL;
|
|
char *snappath_dst = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot_internal(talloc_tos(), handle,
|
|
smb_fname_src->base_name,
|
|
×tamp_src, NULL, &snappath_src)) {
|
|
return -1;
|
|
}
|
|
if (!shadow_copy2_strip_snapshot_internal(talloc_tos(), handle,
|
|
smb_fname_dst->base_name,
|
|
×tamp_dst, NULL, &snappath_dst)) {
|
|
return -1;
|
|
}
|
|
if (timestamp_src != 0) {
|
|
errno = EXDEV;
|
|
return -1;
|
|
}
|
|
if (timestamp_dst != 0) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
/*
|
|
* Don't allow rename on already converted paths.
|
|
*/
|
|
if (snappath_src != NULL) {
|
|
errno = EXDEV;
|
|
return -1;
|
|
}
|
|
if (snappath_dst != NULL) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
|
|
}
|
|
|
|
static int shadow_copy2_symlink(vfs_handle_struct *handle,
|
|
const char *link_contents,
|
|
const struct smb_filename *new_smb_fname)
|
|
{
|
|
time_t timestamp_old = 0;
|
|
time_t timestamp_new = 0;
|
|
char *snappath_old = NULL;
|
|
char *snappath_new = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
|
|
handle,
|
|
link_contents,
|
|
×tamp_old,
|
|
NULL,
|
|
&snappath_old)) {
|
|
return -1;
|
|
}
|
|
if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
|
|
handle,
|
|
new_smb_fname->base_name,
|
|
×tamp_new,
|
|
NULL,
|
|
&snappath_new)) {
|
|
return -1;
|
|
}
|
|
if ((timestamp_old != 0) || (timestamp_new != 0)) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
/*
|
|
* Don't allow symlinks on already converted paths.
|
|
*/
|
|
if ((snappath_old != NULL) || (snappath_new != NULL)) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_SYMLINK(handle, link_contents, new_smb_fname);
|
|
}
|
|
|
|
static int shadow_copy2_link(vfs_handle_struct *handle,
|
|
const struct smb_filename *old_smb_fname,
|
|
const struct smb_filename *new_smb_fname)
|
|
{
|
|
time_t timestamp_old = 0;
|
|
time_t timestamp_new = 0;
|
|
char *snappath_old = NULL;
|
|
char *snappath_new = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
|
|
handle,
|
|
old_smb_fname->base_name,
|
|
×tamp_old,
|
|
NULL,
|
|
&snappath_old)) {
|
|
return -1;
|
|
}
|
|
if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
|
|
handle,
|
|
new_smb_fname->base_name,
|
|
×tamp_new,
|
|
NULL,
|
|
&snappath_new)) {
|
|
return -1;
|
|
}
|
|
if ((timestamp_old != 0) || (timestamp_new != 0)) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
/*
|
|
* Don't allow links on already converted paths.
|
|
*/
|
|
if ((snappath_old != NULL) || (snappath_new != NULL)) {
|
|
errno = EROFS;
|
|
return -1;
|
|
}
|
|
return SMB_VFS_NEXT_LINK(handle, old_smb_fname, new_smb_fname);
|
|
}
|
|
|
|
static int shadow_copy2_stat(vfs_handle_struct *handle,
|
|
struct smb_filename *smb_fname)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
char *tmp;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname->base_name,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_STAT(handle, smb_fname);
|
|
}
|
|
|
|
tmp = smb_fname->base_name;
|
|
smb_fname->base_name = shadow_copy2_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);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
|
|
TALLOC_FREE(smb_fname->base_name);
|
|
smb_fname->base_name = tmp;
|
|
|
|
if (ret == 0) {
|
|
convert_sbuf(handle, smb_fname->base_name, &smb_fname->st);
|
|
}
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_lstat(vfs_handle_struct *handle,
|
|
struct smb_filename *smb_fname)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
char *tmp;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname->base_name,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
|
|
}
|
|
|
|
tmp = smb_fname->base_name;
|
|
smb_fname->base_name = shadow_copy2_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);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
|
|
TALLOC_FREE(smb_fname->base_name);
|
|
smb_fname->base_name = tmp;
|
|
|
|
if (ret == 0) {
|
|
convert_sbuf(handle, smb_fname->base_name, &smb_fname->st);
|
|
}
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_fstat(vfs_handle_struct *handle, files_struct *fsp,
|
|
SMB_STRUCT_STAT *sbuf)
|
|
{
|
|
time_t timestamp = 0;
|
|
int ret;
|
|
|
|
ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
|
|
if (ret == -1) {
|
|
return ret;
|
|
}
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
fsp->fsp_name->base_name,
|
|
×tamp, NULL)) {
|
|
return 0;
|
|
}
|
|
if (timestamp != 0) {
|
|
convert_sbuf(handle, fsp->fsp_name->base_name, sbuf);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int shadow_copy2_open(vfs_handle_struct *handle,
|
|
struct smb_filename *smb_fname, files_struct *fsp,
|
|
int flags, mode_t mode)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
char *tmp;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname->base_name,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
|
|
}
|
|
|
|
tmp = smb_fname->base_name;
|
|
smb_fname->base_name = shadow_copy2_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_OPEN(handle, smb_fname, fsp, flags, mode);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
|
|
TALLOC_FREE(smb_fname->base_name);
|
|
smb_fname->base_name = tmp;
|
|
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_unlink(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
struct smb_filename *conv;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname->base_name,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
|
|
}
|
|
conv = cp_smb_filename(talloc_tos(), smb_fname);
|
|
if (conv == NULL) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
conv->base_name = shadow_copy2_convert(
|
|
conv, handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv->base_name == NULL) {
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_UNLINK(handle, conv);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_chmod(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
mode_t mode)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
char *conv = NULL;
|
|
struct smb_filename *conv_smb_fname;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
TALLOC_FREE(stripped);
|
|
return SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_CHMOD(handle, conv_smb_fname, mode);
|
|
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 shadow_copy2_chown(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
uid_t uid,
|
|
gid_t gid)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
char *conv = NULL;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_CHOWN(handle, smb_fname, uid, gid);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_CHOWN(handle, conv_smb_fname, uid, gid);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv);
|
|
TALLOC_FREE(conv_smb_fname);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void store_cwd_data(vfs_handle_struct *handle,
|
|
const char *connectpath)
|
|
{
|
|
struct shadow_copy2_private *priv = NULL;
|
|
struct smb_filename *cwd_fname = NULL;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
return);
|
|
|
|
TALLOC_FREE(priv->shadow_cwd);
|
|
cwd_fname = SMB_VFS_NEXT_GETWD(handle, talloc_tos());
|
|
if (cwd_fname == NULL) {
|
|
smb_panic("getwd failed\n");
|
|
}
|
|
DBG_DEBUG("shadow cwd = %s\n", cwd_fname->base_name);
|
|
priv->shadow_cwd = talloc_strdup(priv, cwd_fname->base_name);
|
|
TALLOC_FREE(cwd_fname);
|
|
if (priv->shadow_cwd == NULL) {
|
|
smb_panic("talloc failed\n");
|
|
}
|
|
TALLOC_FREE(priv->shadow_connectpath);
|
|
if (connectpath) {
|
|
DBG_DEBUG("shadow conectpath = %s\n", connectpath);
|
|
priv->shadow_connectpath = talloc_strdup(priv, connectpath);
|
|
if (priv->shadow_connectpath == NULL) {
|
|
smb_panic("talloc failed\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static int shadow_copy2_chdir(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
char *snappath = NULL;
|
|
int ret = -1;
|
|
int saved_errno = 0;
|
|
char *conv = NULL;
|
|
size_t rootpath_len = 0;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped,
|
|
&snappath)) {
|
|
return -1;
|
|
}
|
|
if (stripped != NULL) {
|
|
conv = shadow_copy2_do_convert(talloc_tos(),
|
|
handle,
|
|
stripped,
|
|
timestamp,
|
|
&rootpath_len);
|
|
TALLOC_FREE(stripped);
|
|
if (conv == NULL) {
|
|
return -1;
|
|
}
|
|
conv_smb_fname = synthetic_smb_fname(talloc_tos(),
|
|
conv,
|
|
NULL,
|
|
NULL,
|
|
smb_fname->flags);
|
|
} else {
|
|
conv_smb_fname = cp_smb_filename(talloc_tos(), smb_fname);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
if (ret == 0) {
|
|
if (conv != NULL && rootpath_len != 0) {
|
|
conv[rootpath_len] = '\0';
|
|
} else if (snappath != 0) {
|
|
TALLOC_FREE(conv);
|
|
conv = snappath;
|
|
}
|
|
store_cwd_data(handle, conv);
|
|
}
|
|
|
|
TALLOC_FREE(stripped);
|
|
TALLOC_FREE(conv);
|
|
TALLOC_FREE(conv_smb_fname);
|
|
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_ntimes(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
struct smb_file_time *ft)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
struct smb_filename *conv;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname->base_name,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
|
|
}
|
|
conv = cp_smb_filename(talloc_tos(), smb_fname);
|
|
if (conv == NULL) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
conv->base_name = shadow_copy2_convert(
|
|
conv, handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv->base_name == NULL) {
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_NTIMES(handle, conv, ft);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_readlink(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
char *buf,
|
|
size_t bufsiz)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
struct smb_filename *conv = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname->base_name,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_READLINK(handle, smb_fname, buf, bufsiz);
|
|
}
|
|
conv = cp_smb_filename(talloc_tos(), smb_fname);
|
|
if (conv == NULL) {
|
|
TALLOC_FREE(stripped);
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
conv->base_name = shadow_copy2_convert(
|
|
conv, handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv->base_name == NULL) {
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_READLINK(handle, conv, buf, bufsiz);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_mknod(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
mode_t mode,
|
|
SMB_DEV_T dev)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
struct smb_filename *conv = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname->base_name,
|
|
×tamp, &stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_MKNOD(handle, smb_fname, mode, dev);
|
|
}
|
|
conv = cp_smb_filename(talloc_tos(), smb_fname);
|
|
if (conv == NULL) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
conv->base_name = shadow_copy2_convert(
|
|
conv, handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv->base_name == NULL) {
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_MKNOD(handle, conv, mode, dev);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static struct smb_filename *shadow_copy2_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_fname = NULL;
|
|
int saved_errno = 0;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
smb_fname->base_name,
|
|
×tamp, &stripped)) {
|
|
goto done;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_REALPATH(handle, ctx, smb_fname);
|
|
}
|
|
|
|
conv_fname = cp_smb_filename(talloc_tos(), smb_fname);
|
|
if (conv_fname == NULL) {
|
|
goto done;
|
|
}
|
|
conv_fname->base_name = shadow_copy2_convert(
|
|
conv_fname, handle, stripped, timestamp);
|
|
if (conv_fname->base_name == NULL) {
|
|
goto done;
|
|
}
|
|
|
|
result_fname = SMB_VFS_NEXT_REALPATH(handle, ctx, conv_fname);
|
|
|
|
done:
|
|
if (result_fname == NULL) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_fname);
|
|
TALLOC_FREE(stripped);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return result_fname;
|
|
}
|
|
|
|
/**
|
|
* Check whether a given directory contains a
|
|
* snapshot directory as direct subdirectory.
|
|
* If yes, return the path of the snapshot-subdir,
|
|
* otherwise return NULL.
|
|
*/
|
|
static char *have_snapdir(struct vfs_handle_struct *handle,
|
|
const char *path)
|
|
{
|
|
struct smb_filename smb_fname;
|
|
int ret;
|
|
struct shadow_copy2_private *priv;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
return NULL);
|
|
|
|
ZERO_STRUCT(smb_fname);
|
|
smb_fname.base_name = talloc_asprintf(talloc_tos(), "%s/%s",
|
|
path, priv->config->snapdir);
|
|
if (smb_fname.base_name == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_STAT(handle, &smb_fname);
|
|
if ((ret == 0) && (S_ISDIR(smb_fname.st.st_ex_mode))) {
|
|
return smb_fname.base_name;
|
|
}
|
|
TALLOC_FREE(smb_fname.base_name);
|
|
return NULL;
|
|
}
|
|
|
|
static bool check_access_snapdir(struct vfs_handle_struct *handle,
|
|
const char *path)
|
|
{
|
|
struct smb_filename smb_fname;
|
|
int ret;
|
|
NTSTATUS status;
|
|
|
|
ZERO_STRUCT(smb_fname);
|
|
smb_fname.base_name = talloc_asprintf(talloc_tos(),
|
|
"%s",
|
|
path);
|
|
if (smb_fname.base_name == NULL) {
|
|
return false;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_STAT(handle, &smb_fname);
|
|
if (ret != 0 || !S_ISDIR(smb_fname.st.st_ex_mode)) {
|
|
TALLOC_FREE(smb_fname.base_name);
|
|
return false;
|
|
}
|
|
|
|
status = smbd_check_access_rights(handle->conn,
|
|
&smb_fname,
|
|
false,
|
|
SEC_DIR_LIST);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0,("user does not have list permission "
|
|
"on snapdir %s\n",
|
|
smb_fname.base_name));
|
|
TALLOC_FREE(smb_fname.base_name);
|
|
return false;
|
|
}
|
|
TALLOC_FREE(smb_fname.base_name);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Find the snapshot directory (if any) for the given
|
|
* filename (which is relative to the share).
|
|
*/
|
|
static const char *shadow_copy2_find_snapdir(TALLOC_CTX *mem_ctx,
|
|
struct vfs_handle_struct *handle,
|
|
struct smb_filename *smb_fname)
|
|
{
|
|
char *path, *p;
|
|
const char *snapdir;
|
|
struct shadow_copy2_config *config;
|
|
struct shadow_copy2_private *priv;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
return NULL);
|
|
|
|
config = priv->config;
|
|
|
|
/*
|
|
* If the non-snapdisrseverywhere mode, we should not search!
|
|
*/
|
|
if (!config->snapdirseverywhere) {
|
|
return config->snapshot_basepath;
|
|
}
|
|
|
|
path = talloc_asprintf(mem_ctx, "%s/%s",
|
|
handle->conn->connectpath,
|
|
smb_fname->base_name);
|
|
if (path == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
snapdir = have_snapdir(handle, path);
|
|
if (snapdir != NULL) {
|
|
TALLOC_FREE(path);
|
|
return snapdir;
|
|
}
|
|
|
|
while ((p = strrchr(path, '/')) && (p > path)) {
|
|
|
|
p[0] = '\0';
|
|
|
|
snapdir = have_snapdir(handle, path);
|
|
if (snapdir != NULL) {
|
|
TALLOC_FREE(path);
|
|
return snapdir;
|
|
}
|
|
}
|
|
TALLOC_FREE(path);
|
|
return NULL;
|
|
}
|
|
|
|
static bool shadow_copy2_snapshot_to_gmt(vfs_handle_struct *handle,
|
|
const char *name,
|
|
char *gmt, size_t gmt_len)
|
|
{
|
|
struct tm timestamp;
|
|
time_t timestamp_t;
|
|
unsigned long int timestamp_long;
|
|
const char *fmt;
|
|
struct shadow_copy2_config *config;
|
|
struct shadow_copy2_private *priv;
|
|
char *tmpstr = NULL;
|
|
char *tmp = NULL;
|
|
bool converted = false;
|
|
int ret = -1;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
return NULL);
|
|
|
|
config = priv->config;
|
|
|
|
fmt = config->gmt_format;
|
|
|
|
/*
|
|
* If regex is provided, then we will have to parse the
|
|
* filename which will contain both the prefix and the time format.
|
|
* e.g. <prefix><delimiter><time_format>
|
|
*/
|
|
if (priv->snaps->regex != NULL) {
|
|
tmpstr = talloc_strdup(talloc_tos(), name);
|
|
/* point "name" to the time format */
|
|
name = strstr(name, priv->config->delimiter);
|
|
if (name == NULL) {
|
|
goto done;
|
|
}
|
|
/* Extract the prefix */
|
|
tmp = strstr(tmpstr, priv->config->delimiter);
|
|
if (tmp == NULL) {
|
|
goto done;
|
|
}
|
|
*tmp = '\0';
|
|
|
|
/* Parse regex */
|
|
ret = regexec(priv->snaps->regex, tmpstr, 0, NULL, 0);
|
|
if (ret) {
|
|
DBG_DEBUG("shadow_copy2_snapshot_to_gmt: "
|
|
"no regex match for %s\n", tmpstr);
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
ZERO_STRUCT(timestamp);
|
|
if (config->use_sscanf) {
|
|
if (sscanf(name, fmt, ×tamp_long) != 1) {
|
|
DEBUG(10, ("shadow_copy2_snapshot_to_gmt: "
|
|
"no sscanf match %s: %s\n",
|
|
fmt, name));
|
|
goto done;
|
|
}
|
|
timestamp_t = timestamp_long;
|
|
gmtime_r(×tamp_t, ×tamp);
|
|
} else {
|
|
if (strptime(name, fmt, ×tamp) == NULL) {
|
|
DEBUG(10, ("shadow_copy2_snapshot_to_gmt: "
|
|
"no match %s: %s\n",
|
|
fmt, name));
|
|
goto done;
|
|
}
|
|
DEBUG(10, ("shadow_copy2_snapshot_to_gmt: match %s: %s\n",
|
|
fmt, name));
|
|
|
|
if (config->use_localtime) {
|
|
timestamp.tm_isdst = -1;
|
|
timestamp_t = mktime(×tamp);
|
|
gmtime_r(×tamp_t, ×tamp);
|
|
}
|
|
}
|
|
|
|
strftime(gmt, gmt_len, GMT_FORMAT, ×tamp);
|
|
converted = true;
|
|
|
|
done:
|
|
TALLOC_FREE(tmpstr);
|
|
return converted;
|
|
}
|
|
|
|
static int shadow_copy2_label_cmp_asc(const void *x, const void *y)
|
|
{
|
|
return strncmp((const char *)x, (const char *)y, sizeof(SHADOW_COPY_LABEL));
|
|
}
|
|
|
|
static int shadow_copy2_label_cmp_desc(const void *x, const void *y)
|
|
{
|
|
return -strncmp((const char *)x, (const char *)y, sizeof(SHADOW_COPY_LABEL));
|
|
}
|
|
|
|
/*
|
|
sort the shadow copy data in ascending or descending order
|
|
*/
|
|
static void shadow_copy2_sort_data(vfs_handle_struct *handle,
|
|
struct shadow_copy_data *shadow_copy2_data)
|
|
{
|
|
int (*cmpfunc)(const void *, const void *);
|
|
const char *sort;
|
|
struct shadow_copy2_private *priv;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
return);
|
|
|
|
sort = priv->config->sort_order;
|
|
if (sort == NULL) {
|
|
return;
|
|
}
|
|
|
|
if (strcmp(sort, "asc") == 0) {
|
|
cmpfunc = shadow_copy2_label_cmp_asc;
|
|
} else if (strcmp(sort, "desc") == 0) {
|
|
cmpfunc = shadow_copy2_label_cmp_desc;
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
if (shadow_copy2_data && shadow_copy2_data->num_volumes > 0 &&
|
|
shadow_copy2_data->labels)
|
|
{
|
|
TYPESAFE_QSORT(shadow_copy2_data->labels,
|
|
shadow_copy2_data->num_volumes,
|
|
cmpfunc);
|
|
}
|
|
}
|
|
|
|
static int shadow_copy2_get_shadow_copy_data(
|
|
vfs_handle_struct *handle, files_struct *fsp,
|
|
struct shadow_copy_data *shadow_copy2_data,
|
|
bool labels)
|
|
{
|
|
DIR *p;
|
|
const char *snapdir;
|
|
struct smb_filename *snapdir_smb_fname = NULL;
|
|
struct dirent *d;
|
|
TALLOC_CTX *tmp_ctx = talloc_stackframe();
|
|
struct shadow_copy2_private *priv = NULL;
|
|
struct shadow_copy2_snapentry *tmpentry = NULL;
|
|
bool get_snaplist = false;
|
|
bool access_granted = false;
|
|
int ret = -1;
|
|
|
|
snapdir = shadow_copy2_find_snapdir(tmp_ctx, handle, fsp->fsp_name);
|
|
if (snapdir == NULL) {
|
|
DEBUG(0,("shadow:snapdir not found for %s in get_shadow_copy_data\n",
|
|
handle->conn->connectpath));
|
|
errno = EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
access_granted = check_access_snapdir(handle, snapdir);
|
|
if (!access_granted) {
|
|
DEBUG(0,("access denied on listing snapdir %s\n", snapdir));
|
|
errno = EACCES;
|
|
goto done;
|
|
}
|
|
|
|
snapdir_smb_fname = synthetic_smb_fname(talloc_tos(),
|
|
snapdir,
|
|
NULL,
|
|
NULL,
|
|
fsp->fsp_name->flags);
|
|
if (snapdir_smb_fname == NULL) {
|
|
errno = ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
p = SMB_VFS_NEXT_OPENDIR(handle, snapdir_smb_fname, NULL, 0);
|
|
|
|
if (!p) {
|
|
DEBUG(2,("shadow_copy2: SMB_VFS_NEXT_OPENDIR() failed for '%s'"
|
|
" - %s\n", snapdir, strerror(errno)));
|
|
errno = ENOSYS;
|
|
goto done;
|
|
}
|
|
|
|
if (shadow_copy2_data != NULL) {
|
|
shadow_copy2_data->num_volumes = 0;
|
|
shadow_copy2_data->labels = NULL;
|
|
}
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
goto done);
|
|
|
|
/*
|
|
* Normally this function is called twice once with labels = false and
|
|
* then with labels = true. When labels is false it will return the
|
|
* number of volumes so that the caller can allocate memory for that
|
|
* many labels. Therefore to eliminate snaplist both the times it is
|
|
* good to check if labels is set or not.
|
|
*
|
|
* shadow_copy2_data is NULL when we only want to update the list and
|
|
* don't want any labels.
|
|
*/
|
|
if ((priv->snaps->regex != NULL) && (labels || shadow_copy2_data == NULL)) {
|
|
get_snaplist = true;
|
|
/* Reset the global snaplist */
|
|
shadow_copy2_delete_snaplist(priv);
|
|
|
|
/* Set the current time as snaplist update time */
|
|
time(&(priv->snaps->fetch_time));
|
|
}
|
|
|
|
while ((d = SMB_VFS_NEXT_READDIR(handle, p, NULL))) {
|
|
char snapshot[GMT_NAME_LEN+1];
|
|
SHADOW_COPY_LABEL *tlabels;
|
|
|
|
/*
|
|
* ignore names not of the right form in the snapshot
|
|
* directory
|
|
*/
|
|
if (!shadow_copy2_snapshot_to_gmt(
|
|
handle, d->d_name,
|
|
snapshot, sizeof(snapshot))) {
|
|
|
|
DEBUG(6, ("shadow_copy2_get_shadow_copy_data: "
|
|
"ignoring %s\n", d->d_name));
|
|
continue;
|
|
}
|
|
DEBUG(6,("shadow_copy2_get_shadow_copy_data: %s -> %s\n",
|
|
d->d_name, snapshot));
|
|
|
|
if (get_snaplist) {
|
|
/*
|
|
* Create a snap entry for each successful
|
|
* pattern match.
|
|
*/
|
|
tmpentry = shadow_copy2_create_snapentry(priv);
|
|
if (tmpentry == NULL) {
|
|
DBG_ERR("talloc_zero() failed\n");
|
|
goto done;
|
|
}
|
|
tmpentry->snapname = talloc_strdup(tmpentry, d->d_name);
|
|
tmpentry->time_fmt = talloc_strdup(tmpentry, snapshot);
|
|
}
|
|
|
|
if (shadow_copy2_data == NULL) {
|
|
continue;
|
|
}
|
|
|
|
if (!labels) {
|
|
/* the caller doesn't want the labels */
|
|
shadow_copy2_data->num_volumes++;
|
|
continue;
|
|
}
|
|
|
|
tlabels = talloc_realloc(shadow_copy2_data,
|
|
shadow_copy2_data->labels,
|
|
SHADOW_COPY_LABEL,
|
|
shadow_copy2_data->num_volumes+1);
|
|
if (tlabels == NULL) {
|
|
DEBUG(0,("shadow_copy2: out of memory\n"));
|
|
SMB_VFS_NEXT_CLOSEDIR(handle, p);
|
|
goto done;
|
|
}
|
|
|
|
strlcpy(tlabels[shadow_copy2_data->num_volumes], snapshot,
|
|
sizeof(*tlabels));
|
|
|
|
shadow_copy2_data->num_volumes++;
|
|
shadow_copy2_data->labels = tlabels;
|
|
}
|
|
|
|
SMB_VFS_NEXT_CLOSEDIR(handle,p);
|
|
|
|
shadow_copy2_sort_data(handle, shadow_copy2_data);
|
|
ret = 0;
|
|
|
|
done:
|
|
TALLOC_FREE(tmp_ctx);
|
|
return ret;
|
|
}
|
|
|
|
static NTSTATUS shadow_copy2_fget_nt_acl(vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
uint32_t security_info,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct security_descriptor **ppdesc)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
NTSTATUS status;
|
|
char *conv;
|
|
struct smb_filename *smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
|
|
fsp->fsp_name->base_name,
|
|
×tamp, &stripped)) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
|
|
mem_ctx,
|
|
ppdesc);
|
|
}
|
|
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv == NULL) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
smb_fname = synthetic_smb_fname(talloc_tos(),
|
|
conv,
|
|
NULL,
|
|
NULL,
|
|
fsp->fsp_name->flags);
|
|
if (smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = SMB_VFS_NEXT_GET_NT_ACL(handle, smb_fname, security_info,
|
|
mem_ctx, ppdesc);
|
|
TALLOC_FREE(conv);
|
|
TALLOC_FREE(smb_fname);
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS shadow_copy2_get_nt_acl(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
uint32_t security_info,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct security_descriptor **ppdesc)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
NTSTATUS status;
|
|
char *conv;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_GET_NT_ACL(handle, smb_fname, security_info,
|
|
mem_ctx, ppdesc);
|
|
}
|
|
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv == NULL) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
conv_smb_fname = synthetic_smb_fname(talloc_tos(),
|
|
conv,
|
|
NULL,
|
|
NULL,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
status = SMB_VFS_NEXT_GET_NT_ACL(handle, conv_smb_fname, security_info,
|
|
mem_ctx, ppdesc);
|
|
TALLOC_FREE(conv);
|
|
TALLOC_FREE(conv_smb_fname);
|
|
return status;
|
|
}
|
|
|
|
static int shadow_copy2_mkdir(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
mode_t mode)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
char *conv;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_MKDIR(handle, smb_fname, mode);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_MKDIR(handle, conv_smb_fname, mode);
|
|
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 shadow_copy2_rmdir(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
char *conv;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_RMDIR(handle, smb_fname);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_RMDIR(handle, conv_smb_fname);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_smb_fname);
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_chflags(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
unsigned int flags)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
char *conv;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_CHFLAGS(handle, smb_fname, flags);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_CHFLAGS(handle, smb_fname, flags);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_smb_fname);
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t shadow_copy2_getxattr(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
const char *aname,
|
|
void *value,
|
|
size_t size)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
ssize_t ret;
|
|
int saved_errno = 0;
|
|
char *conv;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_GETXATTR(handle, smb_fname, aname, value,
|
|
size);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return -1;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_GETXATTR(handle, conv_smb_fname, aname, value, size);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_smb_fname);
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t shadow_copy2_listxattr(struct vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
char *list, size_t size)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
ssize_t ret;
|
|
int saved_errno = 0;
|
|
char *conv;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_LISTXATTR(handle, smb_fname, list, size);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_LISTXATTR(handle, conv_smb_fname, list, size);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_smb_fname);
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_removexattr(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
const char *aname)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
int saved_errno = 0;
|
|
int ret;
|
|
char *conv;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_REMOVEXATTR(handle, smb_fname, aname);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_REMOVEXATTR(handle, conv_smb_fname, aname);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_smb_fname);
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_setxattr(struct vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname,
|
|
const char *aname, const void *value,
|
|
size_t size, int flags)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
ssize_t ret;
|
|
int saved_errno = 0;
|
|
char *conv;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_SETXATTR(handle, smb_fname,
|
|
aname, value, size, flags);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_SETXATTR(handle, conv_smb_fname,
|
|
aname, value, size, flags);
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv_smb_fname);
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_get_real_filename(struct vfs_handle_struct *handle,
|
|
const char *path,
|
|
const char *name,
|
|
TALLOC_CTX *mem_ctx,
|
|
char **found_name)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
ssize_t ret;
|
|
int saved_errno = 0;
|
|
char *conv;
|
|
|
|
DEBUG(10, ("shadow_copy2_get_real_filename called for path=[%s], "
|
|
"name=[%s]\n", path, name));
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, path,
|
|
×tamp, &stripped)) {
|
|
DEBUG(10, ("shadow_copy2_strip_snapshot failed\n"));
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
DEBUG(10, ("timestamp == 0\n"));
|
|
return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
|
|
mem_ctx, found_name);
|
|
}
|
|
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
|
|
TALLOC_FREE(stripped);
|
|
if (conv == NULL) {
|
|
DEBUG(10, ("shadow_copy2_convert failed\n"));
|
|
return -1;
|
|
}
|
|
DEBUG(10, ("Calling NEXT_GET_REAL_FILE_NAME for conv=[%s], "
|
|
"name=[%s]\n", conv, name));
|
|
ret = SMB_VFS_NEXT_GET_REAL_FILENAME(handle, conv, name,
|
|
mem_ctx, found_name);
|
|
DEBUG(10, ("NEXT_REAL_FILE_NAME returned %d\n", (int)ret));
|
|
if (ret == -1) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(conv);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static const char *shadow_copy2_connectpath(struct vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname_in)
|
|
{
|
|
time_t timestamp = 0;
|
|
char *stripped = NULL;
|
|
char *tmp = NULL;
|
|
const char *fname = smb_fname_in->base_name;
|
|
struct smb_filename smb_fname = {0};
|
|
struct smb_filename *result_fname = NULL;
|
|
char *result = NULL;
|
|
char *parent_dir = NULL;
|
|
int saved_errno = 0;
|
|
size_t rootpath_len = 0;
|
|
struct shadow_copy2_private *priv = NULL;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
|
|
return NULL);
|
|
|
|
DBG_DEBUG("Calc connect path for [%s]\n", fname);
|
|
|
|
if (priv->shadow_connectpath != NULL) {
|
|
DBG_DEBUG("cached connect path is [%s]\n",
|
|
priv->shadow_connectpath);
|
|
return priv->shadow_connectpath;
|
|
}
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
|
|
×tamp, &stripped)) {
|
|
goto done;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_CONNECTPATH(handle, smb_fname_in);
|
|
}
|
|
|
|
tmp = shadow_copy2_do_convert(talloc_tos(), handle, stripped, timestamp,
|
|
&rootpath_len);
|
|
if (tmp == NULL) {
|
|
if (errno != ENOENT) {
|
|
goto done;
|
|
}
|
|
|
|
/*
|
|
* If the converted path does not exist, and converting
|
|
* the parent yields something that does exist, then
|
|
* this path refers to something that has not been
|
|
* created yet, relative to the parent path.
|
|
* The snapshot finding is relative to the parent.
|
|
* (usually snapshots are read/only but this is not
|
|
* necessarily true).
|
|
* This code also covers getting a wildcard in the
|
|
* last component, because this function is called
|
|
* prior to sanitizing the path, and in SMB1 we may
|
|
* get wildcards in path names.
|
|
*/
|
|
if (!parent_dirname(talloc_tos(), stripped, &parent_dir,
|
|
NULL)) {
|
|
errno = ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
tmp = shadow_copy2_do_convert(talloc_tos(), handle, parent_dir,
|
|
timestamp, &rootpath_len);
|
|
if (tmp == NULL) {
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
DBG_DEBUG("converted path is [%s] root path is [%.*s]\n", tmp,
|
|
(int)rootpath_len, tmp);
|
|
|
|
tmp[rootpath_len] = '\0';
|
|
smb_fname = (struct smb_filename) { .base_name = tmp };
|
|
|
|
result_fname = SMB_VFS_NEXT_REALPATH(handle, priv, &smb_fname);
|
|
if (result_fname == NULL) {
|
|
goto done;
|
|
}
|
|
|
|
/*
|
|
* SMB_VFS_NEXT_REALPATH returns a talloc'ed string.
|
|
* Don't leak memory.
|
|
*/
|
|
TALLOC_FREE(priv->shadow_realpath);
|
|
priv->shadow_realpath = result_fname;
|
|
result = priv->shadow_realpath->base_name;
|
|
|
|
DBG_DEBUG("connect path is [%s]\n", result);
|
|
|
|
done:
|
|
if (result == NULL) {
|
|
saved_errno = errno;
|
|
}
|
|
TALLOC_FREE(tmp);
|
|
TALLOC_FREE(stripped);
|
|
TALLOC_FREE(parent_dir);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static uint64_t shadow_copy2_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;
|
|
int saved_errno = 0;
|
|
char *conv = NULL;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
uint64_t ret = (uint64_t)-1;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return (uint64_t)-1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
|
|
bsize, dfree, dsize);
|
|
}
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
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);
|
|
TALLOC_FREE(conv_smb_fname);
|
|
if (saved_errno != 0) {
|
|
errno = saved_errno;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int shadow_copy2_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;
|
|
struct smb_filename *conv_smb_fname = NULL;
|
|
|
|
if (!shadow_copy2_strip_snapshot(talloc_tos(),
|
|
handle,
|
|
smb_fname->base_name,
|
|
×tamp,
|
|
&stripped)) {
|
|
return -1;
|
|
}
|
|
if (timestamp == 0) {
|
|
return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname, qtype, id, dq);
|
|
}
|
|
|
|
conv = shadow_copy2_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,
|
|
smb_fname->flags);
|
|
if (conv_smb_fname == NULL) {
|
|
TALLOC_FREE(conv);
|
|
return -1;
|
|
}
|
|
ret = SMB_VFS_NEXT_GET_QUOTA(handle, conv_smb_fname, qtype, id, dq);
|
|
|
|
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 shadow_copy2_connect(struct vfs_handle_struct *handle,
|
|
const char *service, const char *user)
|
|
{
|
|
struct shadow_copy2_config *config;
|
|
struct shadow_copy2_private *priv;
|
|
int ret;
|
|
const char *snapdir;
|
|
const char *snapprefix = NULL;
|
|
const char *delimiter;
|
|
const char *gmt_format;
|
|
const char *sort_order;
|
|
const char *basedir = NULL;
|
|
const char *snapsharepath = NULL;
|
|
const char *mount_point;
|
|
|
|
DEBUG(10, (__location__ ": cnum[%u], connectpath[%s]\n",
|
|
(unsigned)handle->conn->cnum,
|
|
handle->conn->connectpath));
|
|
|
|
ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
|
|
priv = talloc_zero(handle->conn, struct shadow_copy2_private);
|
|
if (priv == NULL) {
|
|
DBG_ERR("talloc_zero() failed\n");
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
priv->snaps = talloc_zero(priv, struct shadow_copy2_snaplist_info);
|
|
if (priv->snaps == NULL) {
|
|
DBG_ERR("talloc_zero() failed\n");
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
config = talloc_zero(priv, struct shadow_copy2_config);
|
|
if (config == NULL) {
|
|
DEBUG(0, ("talloc_zero() failed\n"));
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
priv->config = config;
|
|
|
|
gmt_format = lp_parm_const_string(SNUM(handle->conn),
|
|
"shadow", "format",
|
|
GMT_FORMAT);
|
|
config->gmt_format = talloc_strdup(config, gmt_format);
|
|
if (config->gmt_format == NULL) {
|
|
DEBUG(0, ("talloc_strdup() failed\n"));
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
/* config->gmt_format must not contain a path separator. */
|
|
if (strchr(config->gmt_format, '/') != NULL) {
|
|
DEBUG(0, ("shadow:format %s must not contain a /"
|
|
"character. Unable to initialize module.\n",
|
|
config->gmt_format));
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
config->use_sscanf = lp_parm_bool(SNUM(handle->conn),
|
|
"shadow", "sscanf", false);
|
|
|
|
config->use_localtime = lp_parm_bool(SNUM(handle->conn),
|
|
"shadow", "localtime",
|
|
false);
|
|
|
|
snapdir = lp_parm_const_string(SNUM(handle->conn),
|
|
"shadow", "snapdir",
|
|
".snapshots");
|
|
config->snapdir = talloc_strdup(config, snapdir);
|
|
if (config->snapdir == NULL) {
|
|
DEBUG(0, ("talloc_strdup() failed\n"));
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
snapprefix = lp_parm_const_string(SNUM(handle->conn),
|
|
"shadow", "snapprefix",
|
|
NULL);
|
|
if (snapprefix != NULL) {
|
|
priv->snaps->regex = talloc_zero(priv->snaps, regex_t);
|
|
if (priv->snaps->regex == NULL) {
|
|
DBG_ERR("talloc_zero() failed\n");
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
/* pre-compute regex rule for matching pattern later */
|
|
ret = regcomp(priv->snaps->regex, snapprefix, 0);
|
|
if (ret) {
|
|
DBG_ERR("Failed to create regex object\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
delimiter = lp_parm_const_string(SNUM(handle->conn),
|
|
"shadow", "delimiter",
|
|
"_GMT");
|
|
if (delimiter != NULL) {
|
|
priv->config->delimiter = talloc_strdup(priv->config, delimiter);
|
|
if (priv->config->delimiter == NULL) {
|
|
DBG_ERR("talloc_strdup() failed\n");
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
config->snapdirseverywhere = lp_parm_bool(SNUM(handle->conn),
|
|
"shadow",
|
|
"snapdirseverywhere",
|
|
false);
|
|
|
|
config->crossmountpoints = lp_parm_bool(SNUM(handle->conn),
|
|
"shadow", "crossmountpoints",
|
|
false);
|
|
|
|
if (config->crossmountpoints && !config->snapdirseverywhere) {
|
|
DBG_WARNING("Warning: 'crossmountpoints' depends on "
|
|
"'snapdirseverywhere'. Disabling crossmountpoints.\n");
|
|
}
|
|
|
|
config->fixinodes = lp_parm_bool(SNUM(handle->conn),
|
|
"shadow", "fixinodes",
|
|
false);
|
|
|
|
sort_order = lp_parm_const_string(SNUM(handle->conn),
|
|
"shadow", "sort", "desc");
|
|
config->sort_order = talloc_strdup(config, sort_order);
|
|
if (config->sort_order == NULL) {
|
|
DEBUG(0, ("talloc_strdup() failed\n"));
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
mount_point = lp_parm_const_string(SNUM(handle->conn),
|
|
"shadow", "mountpoint", NULL);
|
|
if (mount_point != NULL) {
|
|
if (mount_point[0] != '/') {
|
|
DEBUG(1, (__location__ " Warning: 'mountpoint' is "
|
|
"relative ('%s'), but it has to be an "
|
|
"absolute path. Ignoring provided value.\n",
|
|
mount_point));
|
|
mount_point = NULL;
|
|
} else {
|
|
char *p;
|
|
p = strstr(handle->conn->connectpath, mount_point);
|
|
if (p != handle->conn->connectpath) {
|
|
DBG_WARNING("Warning: the share root (%s) is "
|
|
"not a subdirectory of the "
|
|
"specified mountpoint (%s). "
|
|
"Ignoring provided value.\n",
|
|
handle->conn->connectpath,
|
|
mount_point);
|
|
mount_point = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mount_point != NULL) {
|
|
config->mount_point = talloc_strdup(config, mount_point);
|
|
if (config->mount_point == NULL) {
|
|
DEBUG(0, (__location__ " talloc_strdup() failed\n"));
|
|
return -1;
|
|
}
|
|
} else {
|
|
config->mount_point = shadow_copy2_find_mount_point(config,
|
|
handle);
|
|
if (config->mount_point == NULL) {
|
|
DBG_WARNING("shadow_copy2_find_mount_point "
|
|
"of the share root '%s' failed: %s\n",
|
|
handle->conn->connectpath, strerror(errno));
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
basedir = lp_parm_const_string(SNUM(handle->conn),
|
|
"shadow", "basedir", NULL);
|
|
|
|
if (basedir != NULL) {
|
|
if (basedir[0] != '/') {
|
|
DEBUG(1, (__location__ " Warning: 'basedir' is "
|
|
"relative ('%s'), but it has to be an "
|
|
"absolute path. Disabling basedir.\n",
|
|
basedir));
|
|
basedir = NULL;
|
|
} else {
|
|
char *p;
|
|
p = strstr(basedir, config->mount_point);
|
|
if (p != basedir) {
|
|
DEBUG(1, ("Warning: basedir (%s) is not a "
|
|
"subdirectory of the share root's "
|
|
"mount point (%s). "
|
|
"Disabling basedir\n",
|
|
basedir, config->mount_point));
|
|
basedir = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (config->snapdirseverywhere && basedir != NULL) {
|
|
DEBUG(1, (__location__ " Warning: 'basedir' is incompatible "
|
|
"with 'snapdirseverywhere'. Disabling basedir.\n"));
|
|
basedir = NULL;
|
|
}
|
|
|
|
snapsharepath = lp_parm_const_string(SNUM(handle->conn), "shadow",
|
|
"snapsharepath", NULL);
|
|
if (snapsharepath != NULL) {
|
|
if (snapsharepath[0] == '/') {
|
|
DBG_WARNING("Warning: 'snapsharepath' is "
|
|
"absolute ('%s'), but it has to be a "
|
|
"relative path. Disabling snapsharepath.\n",
|
|
snapsharepath);
|
|
snapsharepath = NULL;
|
|
}
|
|
if (config->snapdirseverywhere && snapsharepath != NULL) {
|
|
DBG_WARNING("Warning: 'snapsharepath' is incompatible "
|
|
"with 'snapdirseverywhere'. Disabling "
|
|
"snapsharepath.\n");
|
|
snapsharepath = NULL;
|
|
}
|
|
}
|
|
|
|
if (basedir != NULL && snapsharepath != NULL) {
|
|
DBG_WARNING("Warning: 'snapsharepath' is incompatible with "
|
|
"'basedir'. Disabling snapsharepath\n");
|
|
snapsharepath = NULL;
|
|
}
|
|
|
|
if (snapsharepath != NULL) {
|
|
config->rel_connectpath = talloc_strdup(config, snapsharepath);
|
|
if (config->rel_connectpath == NULL) {
|
|
DBG_ERR("talloc_strdup() failed\n");
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (basedir == NULL) {
|
|
basedir = config->mount_point;
|
|
}
|
|
|
|
if (config->rel_connectpath == NULL &&
|
|
strlen(basedir) < strlen(handle->conn->connectpath)) {
|
|
config->rel_connectpath = talloc_strdup(config,
|
|
handle->conn->connectpath + strlen(basedir));
|
|
if (config->rel_connectpath == NULL) {
|
|
DEBUG(0, ("talloc_strdup() failed\n"));
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (config->snapdir[0] == '/') {
|
|
config->snapdir_absolute = true;
|
|
|
|
if (config->snapdirseverywhere == true) {
|
|
DEBUG(1, (__location__ " Warning: An absolute snapdir "
|
|
"is incompatible with 'snapdirseverywhere', "
|
|
"setting 'snapdirseverywhere' to false.\n"));
|
|
config->snapdirseverywhere = false;
|
|
}
|
|
|
|
if (config->crossmountpoints == true) {
|
|
DEBUG(1, (__location__ " Warning: 'crossmountpoints' "
|
|
"is not supported with an absolute snapdir. "
|
|
"Disabling it.\n"));
|
|
config->crossmountpoints = false;
|
|
}
|
|
|
|
config->snapshot_basepath = config->snapdir;
|
|
} else {
|
|
config->snapshot_basepath = talloc_asprintf(config, "%s/%s",
|
|
config->mount_point, config->snapdir);
|
|
if (config->snapshot_basepath == NULL) {
|
|
DEBUG(0, ("talloc_asprintf() failed\n"));
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
trim_string(config->mount_point, NULL, "/");
|
|
trim_string(config->rel_connectpath, "/", "/");
|
|
trim_string(config->snapdir, NULL, "/");
|
|
trim_string(config->snapshot_basepath, NULL, "/");
|
|
|
|
DEBUG(10, ("shadow_copy2_connect: configuration:\n"
|
|
" share root: '%s'\n"
|
|
" mountpoint: '%s'\n"
|
|
" rel share root: '%s'\n"
|
|
" snapdir: '%s'\n"
|
|
" snapprefix: '%s'\n"
|
|
" delimiter: '%s'\n"
|
|
" snapshot base path: '%s'\n"
|
|
" format: '%s'\n"
|
|
" use sscanf: %s\n"
|
|
" snapdirs everywhere: %s\n"
|
|
" cross mountpoints: %s\n"
|
|
" fix inodes: %s\n"
|
|
" sort order: %s\n"
|
|
"",
|
|
handle->conn->connectpath,
|
|
config->mount_point,
|
|
config->rel_connectpath,
|
|
config->snapdir,
|
|
snapprefix,
|
|
config->delimiter,
|
|
config->snapshot_basepath,
|
|
config->gmt_format,
|
|
config->use_sscanf ? "yes" : "no",
|
|
config->snapdirseverywhere ? "yes" : "no",
|
|
config->crossmountpoints ? "yes" : "no",
|
|
config->fixinodes ? "yes" : "no",
|
|
config->sort_order
|
|
));
|
|
|
|
|
|
SMB_VFS_HANDLE_SET_DATA(handle, priv,
|
|
NULL, struct shadow_copy2_private,
|
|
return -1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct vfs_fn_pointers vfs_shadow_copy2_fns = {
|
|
.connect_fn = shadow_copy2_connect,
|
|
.opendir_fn = shadow_copy2_opendir,
|
|
.disk_free_fn = shadow_copy2_disk_free,
|
|
.get_quota_fn = shadow_copy2_get_quota,
|
|
.rename_fn = shadow_copy2_rename,
|
|
.link_fn = shadow_copy2_link,
|
|
.symlink_fn = shadow_copy2_symlink,
|
|
.stat_fn = shadow_copy2_stat,
|
|
.lstat_fn = shadow_copy2_lstat,
|
|
.fstat_fn = shadow_copy2_fstat,
|
|
.open_fn = shadow_copy2_open,
|
|
.unlink_fn = shadow_copy2_unlink,
|
|
.chmod_fn = shadow_copy2_chmod,
|
|
.chown_fn = shadow_copy2_chown,
|
|
.chdir_fn = shadow_copy2_chdir,
|
|
.ntimes_fn = shadow_copy2_ntimes,
|
|
.readlink_fn = shadow_copy2_readlink,
|
|
.mknod_fn = shadow_copy2_mknod,
|
|
.realpath_fn = shadow_copy2_realpath,
|
|
.get_nt_acl_fn = shadow_copy2_get_nt_acl,
|
|
.fget_nt_acl_fn = shadow_copy2_fget_nt_acl,
|
|
.get_shadow_copy_data_fn = shadow_copy2_get_shadow_copy_data,
|
|
.mkdir_fn = shadow_copy2_mkdir,
|
|
.rmdir_fn = shadow_copy2_rmdir,
|
|
.getxattr_fn = shadow_copy2_getxattr,
|
|
.getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
|
|
.getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
|
|
.listxattr_fn = shadow_copy2_listxattr,
|
|
.removexattr_fn = shadow_copy2_removexattr,
|
|
.setxattr_fn = shadow_copy2_setxattr,
|
|
.chflags_fn = shadow_copy2_chflags,
|
|
.get_real_filename_fn = shadow_copy2_get_real_filename,
|
|
.connectpath_fn = shadow_copy2_connectpath,
|
|
};
|
|
|
|
static_decl_vfs;
|
|
NTSTATUS vfs_shadow_copy2_init(TALLOC_CTX *ctx)
|
|
{
|
|
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
|
|
"shadow_copy2", &vfs_shadow_copy2_fns);
|
|
}
|