/*
- * Third attempt at a shadow copy module
+ * shadow_copy2: a shadow copy module (second implementation)
*
* Copyright (C) Andrew Tridgell 2007 (portions taken from shadow_copy2)
* Copyright (C) Ed Plese 2009
* Copyright (C) Volker Lendecke 2011
* Copyright (C) Christian Ambach 2011
+ * Copyright (C) Michael Adam 2013
+ * Copyright (C) Rajesh Joseph 2016
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*/
/*
+ * This is a second implemetation of a shadow copy module for exposing
+ * file system snapshots to windows clients as shadow copies.
+ *
+ * See the manual page for documentation.
+ */
- This is a 3rd implemetation of a shadow copy module for exposing
- snapshots to windows clients as shadow copies. This version has the
- following features:
-
- 1) you don't need to populate your shares with symlinks to the
- snapshots. This can be very important when you have thousands of
- shares, or use [homes]
+#include "includes.h"
+#include "smbd/smbd.h"
+#include "system/filesys.h"
+#include "include/ntioctl.h"
+#include "util_tdb.h"
+#include "lib/util_path.h"
- 2) the inode number of the files is altered so it is different
- from the original. This allows the 'restore' button to work
- without a sharing violation
+struct shadow_copy2_config {
+ char *gmt_format;
+ bool use_sscanf;
+ bool use_localtime;
+ char *snapdir;
+ char *delimiter;
+ bool snapdirseverywhere;
+ bool crossmountpoints;
+ bool fixinodes;
+ char *sort_order;
+ bool snapdir_absolute;
+ char *mount_point;
+ char *rel_connectpath; /* share root, relative to a snapshot root */
+ char *snapshot_basepath; /* the absolute version of snapdir */
+};
- 3) shadow copy results can be sorted before being sent to the
- client. This is beneficial for filesystems that don't read
- directories alphabetically (the default unix).
+/* Data-structure to hold the list of snap entries */
+struct shadow_copy2_snapentry {
+ char *snapname;
+ char *time_fmt;
+ struct shadow_copy2_snapentry *next;
+ struct shadow_copy2_snapentry *prev;
+};
- 4) vanity naming for snapshots. Snapshots can be named in any
- format compatible with str[fp]time conversions.
+struct shadow_copy2_snaplist_info {
+ struct shadow_copy2_snapentry *snaplist; /* snapshot list */
+ regex_t *regex; /* Regex to filter snaps */
+ time_t fetch_time; /* snaplist update time */
+};
- 5) time stamps in snapshot names can be represented in localtime
- rather than UTC.
- Module options:
+/*
+ * shadow_copy2 private structure. This structure will be
+ * used to keep module specific information
+ */
+struct shadow_copy2_private {
+ struct shadow_copy2_config *config;
+ struct shadow_copy2_snaplist_info *snaps;
+ char *shadow_cwd; /* Absolute $cwd path. */
+ /* Absolute connectpath - can vary depending on $cwd. */
+ char *shadow_connectpath;
+};
- shadow:snapdir = <directory where snapshots are kept>
+static int shadow_copy2_get_shadow_copy_data(
+ vfs_handle_struct *handle, files_struct *fsp,
+ struct shadow_copy_data *shadow_copy2_data,
+ bool labels);
- This is the directory containing the @GMT-* snapshot directories. If it is an absolute
- path it is used as-is. If it is a relative path, then it is taken relative to the mount
- point of the filesystem that the root of this share is on
+/**
+ *This function will create a new snapshot list entry and
+ * return to the caller. This entry will also be added to
+ * the global snapshot list.
+ *
+ * @param[in] priv shadow_copy2 specific data structure
+ * @return Newly created snapshot entry or NULL on failure
+ */
+static struct shadow_copy2_snapentry *shadow_copy2_create_snapentry(
+ struct shadow_copy2_private *priv)
+{
+ struct shadow_copy2_snapentry *tmpentry = NULL;
- shadow:basedir = <base directory that snapshots are from>
+ tmpentry = talloc_zero(priv->snaps, struct shadow_copy2_snapentry);
+ if (tmpentry == NULL) {
+ DBG_ERR("talloc_zero() failed\n");
+ errno = ENOMEM;
+ return NULL;
+ }
- This is an optional parameter that specifies the directory that
- the snapshots are relative to. It defaults to the filesystem
- mount point
+ DLIST_ADD(priv->snaps->snaplist, tmpentry);
- shadow:fixinodes = yes/no
+ return tmpentry;
+}
- If you enable shadow:fixinodes then this module will modify the
- apparent inode number of files in the snapshot directories using
- a hash of the files path. This is needed for snapshot systems
- where the snapshots have the same device:inode number as the
- original files (such as happens with GPFS snapshots). If you
- don't set this option then the 'restore' button in the shadow
- copy UI will fail with a sharing violation.
+/**
+ *This function will delete the entire snaplist and reset
+ * priv->snaps->snaplist to NULL.
+ *
+ * @param[in] priv shadow_copye specific data structure
+ */
+static void shadow_copy2_delete_snaplist(struct shadow_copy2_private *priv)
+{
+ struct shadow_copy2_snapentry *tmp = NULL;
- shadow:sort = asc/desc, or not specified for unsorted (default)
+ while ((tmp = priv->snaps->snaplist) != NULL) {
+ DLIST_REMOVE(priv->snaps->snaplist, tmp);
+ talloc_free(tmp);
+ }
+}
- This is an optional parameter that specifies that the shadow
- copy directories should be sorted before sending them to the
- client. This can be beneficial as unix filesystems are usually
- not listed alphabetically sorted. If enabled, you typically
- want to specify descending order.
+/**
+ * Given a timestamp this function searches the global snapshot list
+ * and returns the complete snapshot directory name saved in the entry.
+ *
+ * @param[in] priv shadow_copy2 specific structure
+ * @param[in] timestamp timestamp corresponding to one of the snapshot
+ * @param[out] snap_str buffer to copy the actual snapshot name
+ * @param[in] len length of snap_str buffer
+ *
+ * @return Length of actual snapshot name, and -1 on failure
+ */
+static ssize_t shadow_copy2_saved_snapname(struct shadow_copy2_private *priv,
+ struct tm *timestamp,
+ char *snap_str, size_t len)
+{
+ ssize_t snaptime_len = -1;
+ struct shadow_copy2_snapentry *entry = NULL;
- shadow:format = <format specification for snapshot names>
+ snaptime_len = strftime(snap_str, len, GMT_FORMAT, timestamp);
+ if (snaptime_len == 0) {
+ DBG_ERR("strftime failed\n");
+ return -1;
+ }
- This is an optional parameter that specifies the format
- specification for the naming of snapshots. The format must
- be compatible with the conversion specifications recognized
- by str[fp]time. The default value is "@GMT-%Y.%m.%d-%H.%M.%S".
+ snaptime_len = -1;
- shadow:localtime = yes/no (default is no)
+ for (entry = priv->snaps->snaplist; entry; entry = entry->next) {
+ if (strcmp(entry->time_fmt, snap_str) == 0) {
+ snaptime_len = snprintf(snap_str, len, "%s",
+ entry->snapname);
+ return snaptime_len;
+ }
+ }
- This is an optional parameter that indicates whether the
- snapshot names are in UTC/GMT or the local time.
+ snap_str[0] = 0;
+ return snaptime_len;
+}
- The following command would generate a correctly formatted directory name
- for use with the default parameters:
- date -u +@GMT-%Y.%m.%d-%H.%M.%S
+/**
+ * This function will check if snaplist is updated or not. If snaplist
+ * is empty then it will create a new list. Each time snaplist is updated
+ * the time is recorded. If the snapshot time is greater than the snaplist
+ * update time then chances are we are working on an older list. Then discard
+ * the old list and fetch a new snaplist.
+ *
+ * @param[in] handle VFS handle struct
+ * @param[in] snap_time time of snapshot
+ *
+ * @return true if the list is updated else false
*/
+static bool shadow_copy2_update_snaplist(struct vfs_handle_struct *handle,
+ time_t snap_time)
+{
+ int ret = -1;
+ bool snaplist_updated = false;
+ struct files_struct fsp = {0};
+ struct smb_filename smb_fname = {0};
+ double seconds = 0.0;
+ struct shadow_copy2_private *priv = NULL;
-#include "includes.h"
-#include "system/filesys.h"
-#include "include/ntioctl.h"
-#include "smbd/proto.h"
-#include <ccan/hash/hash.h>
-#include "util_tdb.h"
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return false);
+
+ seconds = difftime(snap_time, priv->snaps->fetch_time);
+
+ /*
+ * Fetch the snapshot list if either the snaplist is empty or the
+ * required snapshot time is greater than the last fetched snaplist
+ * time.
+ */
+ if (seconds > 0 || (priv->snaps->snaplist == NULL)) {
+ smb_fname.base_name = discard_const_p(char, ".");
+ fsp.fsp_name = &smb_fname;
+
+ ret = shadow_copy2_get_shadow_copy_data(handle, &fsp,
+ NULL, false);
+ if (ret == 0) {
+ snaplist_updated = true;
+ } else {
+ DBG_ERR("Failed to get shadow copy data\n");
+ }
-#define GMT_NAME_LEN 24 /* length of a @GMT- name */
-#define GMT_FORMAT "@GMT-%Y.%m.%d-%H.%M.%S"
+ }
+
+ return snaplist_updated;
+}
static bool shadow_copy2_find_slashes(TALLOC_CTX *mem_ctx, const char *str,
size_t **poffsets,
return true;
}
+/**
+ * Given a timestamp, build the posix level GMT-tag string
+ * based on the configurable format.
+ */
+static ssize_t shadow_copy2_posix_gmt_string(struct vfs_handle_struct *handle,
+ time_t snapshot,
+ char *snaptime_string,
+ size_t len)
+{
+ struct tm snap_tm;
+ ssize_t snaptime_len;
+ struct shadow_copy2_config *config;
+ struct shadow_copy2_private *priv;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return 0);
+
+ config = priv->config;
+
+ if (config->use_sscanf) {
+ snaptime_len = snprintf(snaptime_string,
+ len,
+ config->gmt_format,
+ (unsigned long)snapshot);
+ if (snaptime_len <= 0) {
+ DEBUG(10, ("snprintf failed\n"));
+ return -1;
+ }
+ } else {
+ if (config->use_localtime) {
+ if (localtime_r(&snapshot, &snap_tm) == 0) {
+ DEBUG(10, ("gmtime_r failed\n"));
+ return -1;
+ }
+ } else {
+ if (gmtime_r(&snapshot, &snap_tm) == 0) {
+ DEBUG(10, ("gmtime_r failed\n"));
+ return -1;
+ }
+ }
+
+ if (priv->snaps->regex != NULL) {
+ snaptime_len = shadow_copy2_saved_snapname(priv,
+ &snap_tm, snaptime_string, len);
+ if (snaptime_len >= 0)
+ return snaptime_len;
+
+ /*
+ * If we fail to find the snapshot name, chances are
+ * that we have not updated our snaplist. Make sure the
+ * snaplist is updated.
+ */
+ if (!shadow_copy2_update_snaplist(handle, snapshot)) {
+ DBG_DEBUG("shadow_copy2_update_snaplist "
+ "failed\n");
+ return -1;
+ }
+
+ return shadow_copy2_saved_snapname(priv,
+ &snap_tm, snaptime_string, len);
+ }
+
+ snaptime_len = strftime(snaptime_string,
+ len,
+ config->gmt_format,
+ &snap_tm);
+ if (snaptime_len == 0) {
+ DEBUG(10, ("strftime failed\n"));
+ return -1;
+ }
+ }
+
+ return snaptime_len;
+}
+
+/**
+ * Given a timestamp, build the string to insert into a path
+ * as a path component for creating the local path to the
+ * snapshot at the given timestamp of the input path.
+ *
+ * In the case of a parallel snapdir (specified with an
+ * absolute path), this is the inital portion of the
+ * local path of any snapshot file. The complete path is
+ * obtained by appending the portion of the file's path
+ * below the share root's mountpoint.
+ */
static char *shadow_copy2_insert_string(TALLOC_CTX *mem_ctx,
struct vfs_handle_struct *handle,
time_t snapshot)
{
- struct tm snap_tm;
- fstring gmt;
- size_t gmt_len;
+ fstring snaptime_string;
+ ssize_t snaptime_len = 0;
+ char *result = NULL;
+ 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 (localtime_r(&snapshot, &snap_tm) == 0) {
- DEBUG(10, ("gmtime_r failed\n"));
+ snaptime_len = shadow_copy2_posix_gmt_string(handle,
+ snapshot,
+ snaptime_string,
+ sizeof(snaptime_string));
+ if (snaptime_len <= 0) {
return NULL;
}
- gmt_len = strftime(gmt, sizeof(gmt),
- lp_parm_const_string(SNUM(handle->conn), "shadow",
- "format", GMT_FORMAT),
- &snap_tm);
- if (gmt_len == 0) {
- DEBUG(10, ("strftime failed\n"));
+
+ if (config->snapdir_absolute) {
+ result = talloc_asprintf(mem_ctx, "%s/%s",
+ config->snapdir, snaptime_string);
+ } else {
+ result = talloc_asprintf(mem_ctx, "/%s/%s",
+ config->snapdir, snaptime_string);
+ }
+ if (result == NULL) {
+ DEBUG(1, (__location__ " talloc_asprintf failed\n"));
+ }
+
+ return result;
+}
+
+/**
+ * Build the posix snapshot path for the connection
+ * at the given timestamp, i.e. the absolute posix path
+ * that contains the snapshot for this file system.
+ *
+ * This only applies to classical case, i.e. not
+ * to the "snapdirseverywhere" mode.
+ */
+static char *shadow_copy2_snapshot_path(TALLOC_CTX *mem_ctx,
+ struct vfs_handle_struct *handle,
+ time_t snapshot)
+{
+ fstring snaptime_string;
+ ssize_t snaptime_len = 0;
+ char *result = NULL;
+ struct shadow_copy2_private *priv;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return NULL);
+
+ snaptime_len = shadow_copy2_posix_gmt_string(handle,
+ snapshot,
+ snaptime_string,
+ sizeof(snaptime_string));
+ if (snaptime_len <= 0) {
return NULL;
}
- return talloc_asprintf(talloc_tos(), "/%s/%s",
- lp_parm_const_string(
- SNUM(handle->conn), "shadow", "snapdir",
- ".snapshots"),
- gmt);
+
+ result = talloc_asprintf(mem_ctx, "%s/%s",
+ priv->config->snapshot_basepath, snaptime_string);
+ if (result == NULL) {
+ DEBUG(1, (__location__ " talloc_asprintf failed\n"));
+ }
+
+ return result;
}
-static bool shadow_copy2_strip_snapshot(TALLOC_CTX *mem_ctx,
+static char *make_path_absolute(TALLOC_CTX *mem_ctx,
+ struct shadow_copy2_private *priv,
+ const char *name)
+{
+ char *newpath = NULL;
+ char *abs_path = NULL;
+
+ if (name[0] != '/') {
+ newpath = talloc_asprintf(mem_ctx,
+ "%s/%s",
+ priv->shadow_cwd,
+ name);
+ if (newpath == NULL) {
+ return NULL;
+ }
+ name = newpath;
+ }
+ abs_path = canonicalize_absolute_path(mem_ctx, name);
+ TALLOC_FREE(newpath);
+ return abs_path;
+}
+
+/* Return a $cwd-relative path. */
+static bool make_relative_path(const char *cwd, char *abs_path)
+{
+ size_t cwd_len = strlen(cwd);
+ size_t abs_len = strlen(abs_path);
+
+ if (abs_len < cwd_len) {
+ return false;
+ }
+ if (memcmp(abs_path, cwd, cwd_len) != 0) {
+ return false;
+ }
+ if (abs_path[cwd_len] != '/' && abs_path[cwd_len] != '\0') {
+ return false;
+ }
+ if (abs_path[cwd_len] == '/') {
+ cwd_len++;
+ }
+ memmove(abs_path, &abs_path[cwd_len], abs_len + 1 - cwd_len);
+ return true;
+}
+
+/**
+ * Strip a snapshot component from a filename as
+ * handed in via the smb layer.
+ * Returns the parsed timestamp and the stripped filename.
+ */
+static bool shadow_copy2_strip_snapshot_internal(TALLOC_CTX *mem_ctx,
struct vfs_handle_struct *handle,
- const char *name,
+ const char *orig_name,
time_t *ptimestamp,
- char **pstripped)
+ char **pstripped,
+ char **psnappath)
{
struct tm tm;
- time_t timestamp;
+ time_t timestamp = 0;
const char *p;
char *q;
- char *stripped;
+ char *stripped = NULL;
size_t rest_len, dst_len;
+ struct shadow_copy2_private *priv;
+ const char *snapdir;
+ ssize_t snapdirlen;
+ ptrdiff_t len_before_gmt;
+ const char *name = orig_name;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return false);
+
+ DEBUG(10, (__location__ ": enter path '%s'\n", name));
p = strstr_m(name, "@GMT-");
if (p == NULL) {
+ DEBUG(11, ("@GMT not found\n"));
goto no_snapshot;
}
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 no_snapshot;
}
+
+ /*
+ * Figure out whether we got an already converted string. One
+ * case where this happens is in a smb2 create call with the
+ * mxac create blob set. We do the get_acl call on
+ * fsp->fsp_name, which is already converted. We are converted
+ * if we got a file name of the form ".snapshots/@GMT-",
+ * i.e. ".snapshots/" precedes "p".
+ */
+
+ snapdir = lp_parm_const_string(SNUM(handle->conn), "shadow", "snapdir",
+ ".snapshots");
+ snapdirlen = strlen(snapdir);
+ len_before_gmt = p - name;
+
+ if ((len_before_gmt >= (snapdirlen + 1)) && (p[-1] == '/')) {
+ const char *parent_snapdir = p - (snapdirlen+1);
+
+ DEBUG(10, ("parent_snapdir = %s\n", parent_snapdir));
+
+ if (strncmp(parent_snapdir, snapdir, snapdirlen) == 0) {
+ DEBUG(10, ("name=%s is already converted\n", name));
+ goto no_snapshot;
+ }
+ }
q = strptime(p, GMT_FORMAT, &tm);
if (q == NULL) {
+ DEBUG(10, ("strptime failed\n"));
goto no_snapshot;
}
tm.tm_isdst = -1;
- timestamp = mktime(&tm);
+ timestamp = timegm(&tm);
if (timestamp == (time_t)-1) {
+ DEBUG(10, ("timestamp==-1\n"));
goto no_snapshot;
}
- if ((p == name) && (q[0] == '\0')) {
+ 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) {
- stripped = talloc_strdup(mem_ctx, "");
+ if (len_before_gmt > 0) {
+ /*
+ * There is a slash before
+ * the @GMT-. Remove it.
+ */
+ len_before_gmt -= 1;
+ }
+ stripped = talloc_strndup(mem_ctx, name,
+ len_before_gmt);
if (stripped == NULL) {
return false;
}
return true;
}
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 no_snapshot;
}
q += 1;
rest_len = strlen(q);
- dst_len = (p-name) + rest_len;
+ dst_len = len_before_gmt + rest_len;
- if (lp_parm_bool(SNUM(handle->conn), "shadow", "snapdirseverywhere",
- false)) {
+ if (priv->config->snapdirseverywhere) {
char *insert;
bool have_insert;
insert = shadow_copy2_insert_string(talloc_tos(), handle,
return false;
}
+ DEBUG(10, (__location__ ": snapdirseverywhere mode.\n"
+ "path '%s'.\n"
+ "insert string '%s'\n", name, insert));
+
have_insert = (strstr(name, insert+1) != NULL);
- TALLOC_FREE(insert);
+ DEBUG(10, ("have_insert=%d, name=%s, insert+1=%s\n",
+ (int)have_insert, name, insert+1));
if (have_insert) {
+ DEBUG(10, (__location__ ": insert string '%s' found in "
+ "path '%s' found in snapdirseverywhere mode "
+ "==> already converted\n", insert, name));
+ TALLOC_FREE(insert);
+ goto no_snapshot;
+ }
+ TALLOC_FREE(insert);
+ } else {
+ char *snapshot_path;
+ char *s;
+
+ snapshot_path = shadow_copy2_snapshot_path(talloc_tos(),
+ handle,
+ timestamp);
+ if (snapshot_path == NULL) {
+ errno = ENOMEM;
+ return false;
+ }
+
+ DEBUG(10, (__location__ " path: '%s'.\n"
+ "snapshot path: '%s'\n", name, snapshot_path));
+
+ s = strstr(name, snapshot_path);
+ if (s == name) {
+ /*
+ * this starts with "snapshot_basepath/GMT-Token"
+ * so it is already a converted absolute
+ * path. Don't process further.
+ */
+ DEBUG(10, (__location__ ": path '%s' starts with "
+ "snapshot path '%s' (not in "
+ "snapdirseverywhere mode) ==> "
+ "already converted\n", name, snapshot_path));
+ talloc_free(snapshot_path);
goto no_snapshot;
}
+ talloc_free(snapshot_path);
}
if (pstripped != NULL) {
return false;
}
if (p > name) {
- memcpy(stripped, name, p-name);
+ memcpy(stripped, name, len_before_gmt);
}
if (rest_len > 0) {
- memcpy(stripped + (p-name), q, rest_len);
+ memcpy(stripped + len_before_gmt, q, rest_len);
}
stripped[dst_len] = '\0';
*pstripped = stripped;
return true;
}
+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)
{
return path;
}
-static char *shadow_copy2_convert(TALLOC_CTX *mem_ctx,
- struct vfs_handle_struct *handle,
- const char *name, time_t timestamp)
+/**
+ * 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 pathlen;
char *insert = NULL;
char *converted = NULL;
- size_t insertlen;
+ size_t insertlen, connectlen = 0;
int i, saved_errno;
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 ... */
+ }
- path = talloc_asprintf(mem_ctx, "%s/%s", handle->conn->connectpath,
- name);
+ 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;
- DEBUG(10, ("converting %s\n", path));
-
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;
min_offset = 0;
- if (!lp_parm_bool(SNUM(handle->conn), "shadow", "crossmountpoints",
- false)) {
- char *mount_point;
-
- mount_point = shadow_copy2_find_mount_point(talloc_tos(),
- handle);
- if (mount_point == NULL) {
- goto fail;
- }
- min_offset = strlen(mount_point);
- TALLOC_FREE(mount_point);
+ if (!config->crossmountpoints) {
+ min_offset = strlen(config->mount_point);
}
memcpy(converted, path, pathlen+1);
goto fail;
}
+ if (offset >= connectlen) {
+ in_share_offset = offset;
+ }
+
memcpy(converted+offset, insert, insertlen);
offset += insertlen;
ret = SMB_VFS_NEXT_LSTAT(handle, &converted_fname);
- DEBUG(10, ("Trying %s: %d (%s)\n", converted,
+ 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) {
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)
{
- if (lp_parm_bool(SNUM(handle->conn), "shadow", "fixinodes", False)) {
+ 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
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 = hash(fname, strlen(fname), 0) & 0xFF000000;
+ shash = tdb_jenkins_hash(&key) & 0xFF000000;
if (shash == 0) {
shash = 1;
}
}
static DIR *shadow_copy2_opendir(vfs_handle_struct *handle,
- const char *fname,
- const char *mask,
- uint32 attr)
+ const struct smb_filename *smb_fname,
+ const char *mask,
+ uint32_t attr)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
DIR *ret;
int saved_errno;
char *conv;
+ struct smb_filename *conv_smb_fname = NULL;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ 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, fname, mask, attr);
+ 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;
}
- ret = SMB_VFS_NEXT_OPENDIR(handle, conv, mask, attr);
+ 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);
saved_errno = errno;
TALLOC_FREE(conv);
+ TALLOC_FREE(conv_smb_fname);
errno = saved_errno;
return ret;
}
const struct smb_filename *smb_fname_src,
const struct smb_filename *smb_fname_dst)
{
- time_t timestamp_src, timestamp_dst;
+ time_t timestamp_src = 0;
+ time_t timestamp_dst = 0;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
smb_fname_src->base_name,
static int shadow_copy2_symlink(vfs_handle_struct *handle,
const char *oldname, const char *newname)
{
- time_t timestamp_old, timestamp_new;
+ time_t timestamp_old = 0;
+ time_t timestamp_new = 0;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, oldname,
×tamp_old, NULL)) {
static int shadow_copy2_link(vfs_handle_struct *handle,
const char *oldname, const char *newname)
{
- time_t timestamp_old, timestamp_new;
+ time_t timestamp_old = 0;
+ time_t timestamp_new = 0;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, oldname,
×tamp_old, NULL)) {
static int shadow_copy2_stat(vfs_handle_struct *handle,
struct smb_filename *smb_fname)
{
- time_t timestamp;
- char *stripped, *tmp;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ char *tmp;
int ret, saved_errno;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
static int shadow_copy2_lstat(vfs_handle_struct *handle,
struct smb_filename *smb_fname)
{
- time_t timestamp;
- char *stripped, *tmp;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ char *tmp;
int ret, saved_errno;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
static int shadow_copy2_fstat(vfs_handle_struct *handle, files_struct *fsp,
SMB_STRUCT_STAT *sbuf)
{
- time_t timestamp;
+ time_t timestamp = 0;
int ret;
ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
struct smb_filename *smb_fname, files_struct *fsp,
int flags, mode_t mode)
{
- time_t timestamp;
- char *stripped, *tmp;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ char *tmp;
int ret, saved_errno;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
static int shadow_copy2_unlink(vfs_handle_struct *handle,
const struct smb_filename *smb_fname)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
struct smb_filename *conv;
- NTSTATUS status;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
smb_fname->base_name,
if (timestamp == 0) {
return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
}
- status = copy_smb_filename(talloc_tos(), smb_fname, &conv);
- if (!NT_STATUS_IS_OK(status)) {
+ conv = cp_smb_filename(talloc_tos(), smb_fname);
+ if (conv == NULL) {
errno = ENOMEM;
return -1;
}
return ret;
}
-static int shadow_copy2_chmod(vfs_handle_struct *handle, const char *fname,
- mode_t mode)
+static int shadow_copy2_chmod(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ mode_t mode)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
- char *conv;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ 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) {
- return SMB_VFS_NEXT_CHMOD(handle, fname, mode);
+ 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;
}
- ret = SMB_VFS_NEXT_CHMOD(handle, conv, mode);
+ 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);
saved_errno = errno;
TALLOC_FREE(conv);
+ TALLOC_FREE(conv_smb_fname);
errno = saved_errno;
return ret;
}
-static int shadow_copy2_chown(vfs_handle_struct *handle, const char *fname,
- uid_t uid, gid_t gid)
+static int shadow_copy2_chown(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ uid_t uid,
+ gid_t gid)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
- char *conv;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ 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, fname, uid, gid);
+ 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;
}
- ret = SMB_VFS_NEXT_CHOWN(handle, conv, uid, gid);
+ 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);
saved_errno = errno;
TALLOC_FREE(conv);
+ TALLOC_FREE(conv_smb_fname);
errno = saved_errno;
return ret;
}
+static void store_cwd_data(vfs_handle_struct *handle,
+ const char *connectpath)
+{
+ struct shadow_copy2_private *priv = NULL;
+ char *cwd = NULL;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return);
+
+ TALLOC_FREE(priv->shadow_cwd);
+ cwd = SMB_VFS_NEXT_GETWD(handle);
+ if (cwd == NULL) {
+ smb_panic("getwd failed\n");
+ }
+ DBG_DEBUG("shadow cwd = %s\n", cwd);
+ priv->shadow_cwd = talloc_strdup(priv, cwd);
+ SAFE_FREE(cwd);
+ 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 char *fname)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- char *conv;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ 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;
+
+ if (!shadow_copy2_strip_snapshot_internal(talloc_tos(), handle, fname,
+ ×tamp, &stripped, &snappath)) {
return -1;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_CHDIR(handle, fname);
+ if (stripped != NULL) {
+ conv = shadow_copy2_do_convert(talloc_tos(),
+ handle,
+ stripped,
+ timestamp,
+ &rootpath_len);
+ TALLOC_FREE(stripped);
+ if (conv == NULL) {
+ return -1;
+ }
+ fname = conv;
}
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
- return -1;
+
+ ret = SMB_VFS_NEXT_CHDIR(handle, fname);
+ if (ret == -1) {
+ saved_errno = errno;
}
- ret = SMB_VFS_NEXT_CHDIR(handle, conv);
- 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);
- errno = saved_errno;
+
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
return ret;
}
const struct smb_filename *smb_fname,
struct smb_file_time *ft)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
struct smb_filename *conv;
- NTSTATUS status;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
smb_fname->base_name,
if (timestamp == 0) {
return SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
}
- status = copy_smb_filename(talloc_tos(), smb_fname, &conv);
- if (!NT_STATUS_IS_OK(status)) {
+ conv = cp_smb_filename(talloc_tos(), smb_fname);
+ if (conv == NULL) {
errno = ENOMEM;
return -1;
}
static int shadow_copy2_readlink(vfs_handle_struct *handle,
const char *fname, char *buf, size_t bufsiz)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
char *conv;
static int shadow_copy2_mknod(vfs_handle_struct *handle,
const char *fname, mode_t mode, SMB_DEV_T dev)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
char *conv;
static char *shadow_copy2_realpath(vfs_handle_struct *handle,
const char *fname)
{
- time_t timestamp;
+ time_t timestamp = 0;
char *stripped = NULL;
char *tmp = NULL;
char *result = NULL;
- char *inserted = NULL;
- char *inserted_to, *inserted_end;
int saved_errno;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
}
result = SMB_VFS_NEXT_REALPATH(handle, tmp);
- if (result == NULL) {
- goto done;
- }
-
- /*
- * Take away what we've inserted. This removes the @GMT-thingy
- * completely, but will give a path under the share root.
- */
- inserted = shadow_copy2_insert_string(talloc_tos(), handle, timestamp);
- if (inserted == NULL) {
- goto done;
- }
- inserted_to = strstr_m(result, inserted);
- if (inserted_to == NULL) {
- DEBUG(2, ("SMB_VFS_NEXT_REALPATH removed %s\n", inserted));
- goto done;
- }
- inserted_end = inserted_to + talloc_get_size(inserted) - 1;
- memmove(inserted_to, inserted_end, strlen(inserted_end)+1);
done:
saved_errno = errno;
- TALLOC_FREE(inserted);
TALLOC_FREE(tmp);
TALLOC_FREE(stripped);
errno = saved_errno;
return result;
}
+/**
+ * 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,
- lp_parm_const_string(SNUM(handle->conn), "shadow", "snapdir",
- ".snapshots"));
+ smb_fname.base_name = talloc_asprintf(talloc_tos(), "%s/%s",
+ path, priv->config->snapdir);
if (smb_fname.base_name == NULL) {
return NULL;
}
return NULL;
}
-static char *shadow_copy2_find_snapdir(TALLOC_CTX *mem_ctx,
- struct vfs_handle_struct *handle,
- struct smb_filename *smb_fname)
+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;
- char *snapdir;
+ 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,
return NULL;
}
-static bool shadow_copy2_snapshot_to_gmt(TALLOC_CTX *mem_ctx,
- vfs_handle_struct *handle,
+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;
- fmt = lp_parm_const_string(SNUM(handle->conn), "shadow",
- "format", GMT_FORMAT);
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return NULL);
- ZERO_STRUCT(timestamp);
- if (strptime(name, fmt, ×tamp) == NULL) {
- DEBUG(10, ("shadow_copy2_snapshot_to_gmt: no match %s: %s\n",
- fmt, name));
- return false;
- }
+ config = priv->config;
- DEBUG(10, ("shadow_copy2_snapshot_to_gmt: match %s: %s\n", fmt, name));
+ 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);
+ *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;
+ }
+ }
- if (lp_parm_bool(SNUM(handle->conn), "shadow", "localtime", false)) {
- timestamp.tm_isdst = -1;
- timestamp_t = mktime(×tamp);
+ 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);
- return true;
+ converted = true;
+
+done:
+ TALLOC_FREE(tmpstr);
+ return converted;
}
static int shadow_copy2_label_cmp_asc(const void *x, const void *y)
{
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 = lp_parm_const_string(SNUM(handle->conn), "shadow",
- "sort", NULL);
+ sort = priv->config->sort_order;
if (sort == NULL) {
return;
}
shadow_copy2_data->num_volumes,
cmpfunc);
}
-
- return;
}
static int shadow_copy2_get_shadow_copy_data(
{
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;
- talloc_free(tmp_ctx);
- return -1;
+ goto done;
}
- p = SMB_VFS_NEXT_OPENDIR(handle, snapdir, NULL, 0);
+ 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)));
- talloc_free(tmp_ctx);
errno = ENOSYS;
- return -1;
+ goto done;
}
- shadow_copy2_data->num_volumes = 0;
- shadow_copy2_data->labels = NULL;
+ 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];
* directory
*/
if (!shadow_copy2_snapshot_to_gmt(
- tmp_ctx, handle, d->d_name,
+ handle, d->d_name,
snapshot, sizeof(snapshot))) {
DEBUG(6, ("shadow_copy2_get_shadow_copy_data: "
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++;
if (tlabels == NULL) {
DEBUG(0,("shadow_copy2: out of memory\n"));
SMB_VFS_NEXT_CLOSEDIR(handle, p);
- talloc_free(tmp_ctx);
- return -1;
+ goto done;
}
strlcpy(tlabels[shadow_copy2_data->num_volumes], snapshot,
SMB_VFS_NEXT_CLOSEDIR(handle,p);
shadow_copy2_sort_data(handle, shadow_copy2_data);
+ ret = 0;
- talloc_free(tmp_ctx);
- return 0;
+done:
+ TALLOC_FREE(tmp_ctx);
+ return ret;
}
static NTSTATUS shadow_copy2_fget_nt_acl(vfs_handle_struct *handle,
struct files_struct *fsp,
- uint32 security_info,
+ uint32_t security_info,
+ TALLOC_CTX *mem_ctx,
struct security_descriptor **ppdesc)
{
- time_t timestamp;
- char *stripped;
+ 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,
}
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);
if (conv == NULL) {
return map_nt_error_from_unix(errno);
}
- status = SMB_VFS_NEXT_GET_NT_ACL(handle, conv, security_info, ppdesc);
+ 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 char *fname,
- uint32 security_info,
+ const struct smb_filename *smb_fname,
+ uint32_t security_info,
+ TALLOC_CTX *mem_ctx,
struct security_descriptor **ppdesc)
{
- time_t timestamp;
- char *stripped;
+ 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, fname,
- ×tamp, &stripped)) {
+ 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, fname, security_info,
- ppdesc);
+ 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);
}
- status = SMB_VFS_NEXT_GET_NT_ACL(handle, conv, security_info, ppdesc);
+ 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 char *fname, mode_t mode)
+ const struct smb_filename *smb_fname,
+ mode_t mode)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
char *conv;
+ struct smb_filename *conv_smb_fname = NULL;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ 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, fname, mode);
+ 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;
}
- ret = SMB_VFS_NEXT_MKDIR(handle, conv, mode);
+ 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);
saved_errno = errno;
TALLOC_FREE(conv);
+ TALLOC_FREE(conv_smb_fname);
errno = saved_errno;
return ret;
}
-static int shadow_copy2_rmdir(vfs_handle_struct *handle, const char *fname)
+static int shadow_copy2_rmdir(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
char *conv;
+ struct smb_filename *conv_smb_fname = NULL;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ 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, fname);
+ 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;
}
- ret = SMB_VFS_NEXT_RMDIR(handle, conv);
+ 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);
saved_errno = errno;
+ TALLOC_FREE(conv_smb_fname);
TALLOC_FREE(conv);
errno = saved_errno;
return ret;
static int shadow_copy2_chflags(vfs_handle_struct *handle, const char *fname,
unsigned int flags)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
char *conv;
const char *fname, const char *aname,
void *value, size_t size)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
ssize_t ret;
int saved_errno;
char *conv;
const char *fname,
char *list, size_t size)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
ssize_t ret;
int saved_errno;
char *conv;
static int shadow_copy2_removexattr(vfs_handle_struct *handle,
const char *fname, const char *aname)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
int ret, saved_errno;
char *conv;
return ret;
}
-static int shadow_copy2_lremovexattr(vfs_handle_struct *handle,
- const char *fname, const char *aname)
+static int shadow_copy2_setxattr(struct vfs_handle_struct *handle,
+ const char *fname,
+ const char *aname, const void *value,
+ size_t size, int flags)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ ssize_t ret;
+ int saved_errno;
char *conv;
if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
return -1;
}
if (timestamp == 0) {
- return SMB_VFS_NEXT_LREMOVEXATTR(handle, fname, aname);
+ return SMB_VFS_NEXT_SETXATTR(handle, fname, aname, value, size,
+ flags);
}
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
TALLOC_FREE(stripped);
if (conv == NULL) {
return -1;
}
- ret = SMB_VFS_NEXT_LREMOVEXATTR(handle, conv, aname);
+ ret = SMB_VFS_NEXT_SETXATTR(handle, conv, aname, value, size, flags);
saved_errno = errno;
TALLOC_FREE(conv);
errno = saved_errno;
return ret;
}
-static int shadow_copy2_setxattr(struct vfs_handle_struct *handle,
- const char *fname,
- const char *aname, const void *value,
- size_t size, int flags)
+static int shadow_copy2_chmod_acl(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ mode_t mode)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
ssize_t ret;
int saved_errno;
- char *conv;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ 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_SETXATTR(handle, fname, aname, value, size,
- flags);
+ return SMB_VFS_NEXT_CHMOD_ACL(handle, smb_fname, mode);
}
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
TALLOC_FREE(stripped);
if (conv == NULL) {
return -1;
}
- ret = SMB_VFS_NEXT_SETXATTR(handle, conv, aname, value, size, flags);
+ 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_ACL(handle, conv_smb_fname, mode);
saved_errno = errno;
TALLOC_FREE(conv);
+ TALLOC_FREE(conv_smb_fname);
errno = saved_errno;
return ret;
}
-static int shadow_copy2_chmod_acl(vfs_handle_struct *handle,
- const char *fname, mode_t mode)
+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;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
ssize_t ret;
int saved_errno;
char *conv;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
+ 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) {
- return SMB_VFS_NEXT_CHMOD_ACL(handle, fname, mode);
+ 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;
}
- ret = SMB_VFS_NEXT_CHMOD_ACL(handle, conv, mode);
+ 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));
saved_errno = errno;
TALLOC_FREE(conv);
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)
+static const char *shadow_copy2_connectpath(struct vfs_handle_struct *handle,
+ const char *fname)
+{
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ char *tmp = NULL;
+ char *result = NULL;
+ char *parent_dir = NULL;
+ int saved_errno;
+ 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, fname);
+ }
+
+ 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';
+ result = SMB_VFS_NEXT_REALPATH(handle, tmp);
+ if (result == NULL) {
+ goto done;
+ }
+
+ DBG_DEBUG("connect path is [%s]\n", result);
+
+done:
+ saved_errno = errno;
+ TALLOC_FREE(tmp);
+ TALLOC_FREE(stripped);
+ TALLOC_FREE(parent_dir);
+ errno = saved_errno;
+ return result;
+}
+
+static uint64_t shadow_copy2_disk_free(vfs_handle_struct *handle,
+ const char *path, uint64_t *bsize,
+ uint64_t *dfree, uint64_t *dsize)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
ssize_t ret;
int saved_errno;
char *conv;
return -1;
}
if (timestamp == 0) {
- return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name,
- mem_ctx, found_name);
+ return SMB_VFS_NEXT_DISK_FREE(handle, path,
+ bsize, dfree, dsize);
}
- if (stripped[0] == '\0') {
- *found_name = talloc_strdup(mem_ctx, name);
- if (*found_name == NULL) {
- errno = ENOMEM;
- return -1;
- }
- return 0;
+
+ conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
+ TALLOC_FREE(stripped);
+ if (conv == NULL) {
+ return -1;
+ }
+
+ ret = SMB_VFS_NEXT_DISK_FREE(handle, conv, bsize, dfree, dsize);
+
+ saved_errno = errno;
+ TALLOC_FREE(conv);
+ errno = saved_errno;
+
+ return ret;
+}
+
+static int shadow_copy2_get_quota(vfs_handle_struct *handle, const char *path,
+ enum SMB_QUOTA_TYPE qtype, unid_t id,
+ SMB_DISK_QUOTA *dq)
+{
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ int ret;
+ int saved_errno;
+ char *conv;
+
+ if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, path, ×tamp,
+ &stripped)) {
+ return -1;
+ }
+ if (timestamp == 0) {
+ return SMB_VFS_NEXT_GET_QUOTA(handle, path, qtype, id, dq);
}
+
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
TALLOC_FREE(stripped);
if (conv == NULL) {
return -1;
}
- ret = SMB_VFS_NEXT_GET_REAL_FILENAME(handle, conv, name,
- mem_ctx, found_name);
+
+ ret = SMB_VFS_NEXT_GET_QUOTA(handle, conv, qtype, id, dq);
+
saved_errno = errno;
TALLOC_FREE(conv);
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->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,
.getxattr_fn = shadow_copy2_getxattr,
.listxattr_fn = shadow_copy2_listxattr,
.removexattr_fn = shadow_copy2_removexattr,
- .lremovexattr_fn = shadow_copy2_lremovexattr,
.setxattr_fn = shadow_copy2_setxattr,
.chmod_acl_fn = shadow_copy2_chmod_acl,
.chflags_fn = shadow_copy2_chflags,
.get_real_filename_fn = shadow_copy2_get_real_filename,
+ .connectpath_fn = shadow_copy2_connectpath,
};
NTSTATUS vfs_shadow_copy2_init(void);
git.samba.org / kai / samba-autobuild / .git / blobdiff