* 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
*/
#include "includes.h"
+#include "smbd/smbd.h"
#include "system/filesys.h"
#include "include/ntioctl.h"
-#include <ccan/hash/hash.h>
#include "util_tdb.h"
+#include "lib/util_path.h"
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 *basedir;
char *mount_point;
- char *rel_connectpath; /* share root, relative to the basedir */
+ char *rel_connectpath; /* share root, relative to a snapshot root */
char *snapshot_basepath; /* the absolute version of snapdir */
};
+/* 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;
+};
+
+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 */
+};
+
+
+/*
+ * 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;
+};
+
+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 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;
+
+ tmpentry = talloc_zero(priv->snaps, struct shadow_copy2_snapentry);
+ if (tmpentry == NULL) {
+ DBG_ERR("talloc_zero() failed\n");
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ DLIST_ADD(priv->snaps->snaplist, tmpentry);
+
+ return tmpentry;
+}
+
+/**
+ *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;
+
+ while ((tmp = priv->snaps->snaplist) != NULL) {
+ DLIST_REMOVE(priv->snaps->snaplist, tmp);
+ talloc_free(tmp);
+ }
+}
+
+/**
+ * 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;
+
+ snaptime_len = strftime(snap_str, len, GMT_FORMAT, timestamp);
+ if (snaptime_len == 0) {
+ DBG_ERR("strftime failed\n");
+ return -1;
+ }
+
+ snaptime_len = -1;
+
+ 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;
+ }
+ }
+
+ snap_str[0] = 0;
+ return snaptime_len;
+}
+
+
+/**
+ * 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;
+
+ 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");
+ }
+
+ }
+
+ return snaplist_updated;
+}
+
static bool shadow_copy2_find_slashes(TALLOC_CTX *mem_ctx, const char *str,
size_t **poffsets,
unsigned *pnum_offsets)
* Given a timestamp, build the posix level GMT-tag string
* based on the configurable format.
*/
-static size_t shadow_copy2_posix_gmt_string(struct vfs_handle_struct *handle,
+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;
- size_t snaptime_len;
+ ssize_t snaptime_len;
struct shadow_copy2_config *config;
+ struct shadow_copy2_private *priv;
- SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ 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,
(unsigned long)snapshot);
if (snaptime_len <= 0) {
DEBUG(10, ("snprintf failed\n"));
- return snaptime_len;
+ return -1;
}
} else {
if (config->use_localtime) {
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 0;
+ return -1;
}
}
time_t snapshot)
{
fstring snaptime_string;
- size_t snaptime_len = 0;
+ ssize_t snaptime_len = 0;
char *result = NULL;
struct shadow_copy2_config *config;
+ struct shadow_copy2_private *priv;
- SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
return NULL);
+ config = priv->config;
+
snaptime_len = shadow_copy2_posix_gmt_string(handle,
snapshot,
snaptime_string,
time_t snapshot)
{
fstring snaptime_string;
- size_t snaptime_len = 0;
+ ssize_t snaptime_len = 0;
char *result = NULL;
- struct shadow_copy2_config *config;
+ struct shadow_copy2_private *priv;
- SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
return NULL);
snaptime_len = shadow_copy2_posix_gmt_string(handle,
}
result = talloc_asprintf(mem_ctx, "%s/%s",
- config->snapshot_basepath, snaptime_string);
+ priv->config->snapshot_basepath, snaptime_string);
if (result == NULL) {
DEBUG(1, (__location__ " talloc_asprintf failed\n"));
}
return result;
}
+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(TALLOC_CTX *mem_ctx,
+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_config *config;
+ 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, config, struct shadow_copy2_config,
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
return false);
DEBUG(10, (__location__ ": enter path '%s'\n", name));
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"));
DEBUG(10, ("timestamp==-1\n"));
goto no_snapshot;
}
- if ((p == name) && (q[0] == '\0')) {
- /* the name consists of only the GMT token */
+ 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;
}
}
if (q[0] != '/') {
/*
- * The GMT token is either at the end of the path
- * or it is not a complete path component, i.e. the
- * path component continues after the gmt-token.
- *
- * TODO: Is this correct? Or would the GMT tag as the
- * last component be a valid input?
+ * 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 (config->snapdirseverywhere) {
+ if (priv->config->snapdirseverywhere) {
char *insert;
bool have_insert;
insert = shadow_copy2_insert_string(talloc_tos(), handle,
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)
{
* 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_convert(TALLOC_CTX *mem_ctx,
- struct vfs_handle_struct *handle,
- const char *name, time_t timestamp)
+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, config, struct shadow_copy2_config,
+ 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) {
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;
/* 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;
goto fail;
}
+ if (offset >= connectlen) {
+ in_share_offset = offset;
+ }
+
memcpy(converted+offset, insert, insertlen);
offset += insertlen;
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)
{
- struct shadow_copy2_config *config;
+ struct shadow_copy2_private *priv;
- SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
return);
- if (config->fixinodes) {
+ 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;
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;
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;
{
struct smb_filename smb_fname;
int ret;
- struct shadow_copy2_config *config;
+ struct shadow_copy2_private *priv;
- SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ 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, config->snapdir);
+ path, priv->config->snapdir);
if (smb_fname.base_name == NULL) {
return NULL;
}
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).
char *path, *p;
const char *snapdir;
struct shadow_copy2_config *config;
+ struct shadow_copy2_private *priv;
- SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ 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!
*/
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, config, struct shadow_copy2_config,
+ 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);
+ *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));
- return false;
+ goto done;
}
timestamp_t = timestamp_long;
gmtime_r(×tamp_t, ×tamp);
DEBUG(10, ("shadow_copy2_snapshot_to_gmt: "
"no match %s: %s\n",
fmt, name));
- return false;
+ goto done;
}
DEBUG(10, ("shadow_copy2_snapshot_to_gmt: match %s: %s\n",
fmt, name));
}
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_config *config;
+ struct shadow_copy2_private *priv;
- SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
return);
- sort = config->sort_order;
+ sort = priv->config->sort_order;
if (sort == NULL) {
return;
}
{
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];
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 (conv == NULL) {
return map_nt_error_from_unix(errno);
}
- status = SMB_VFS_NEXT_GET_NT_ACL(handle, conv, security_info,
+ 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,
+ return SMB_VFS_NEXT_GET_NT_ACL(handle, smb_fname, 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,
+ 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;
const char *aname, const void *value,
size_t size, int flags)
{
- time_t timestamp;
- char *stripped;
+ time_t timestamp = 0;
+ char *stripped = NULL;
ssize_t ret;
int saved_errno;
char *conv;
}
static int shadow_copy2_chmod_acl(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;
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_CHMOD_ACL(handle, fname, mode);
+ 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_CHMOD_ACL(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_ACL(handle, conv_smb_fname, mode);
saved_errno = errno;
TALLOC_FREE(conv);
+ TALLOC_FREE(conv_smb_fname);
errno = saved_errno;
return ret;
}
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;
+ 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);
}
- 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) {
+ 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));
saved_errno = errno;
TALLOC_FREE(conv);
errno = saved_errno;
return ret;
}
+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, bool small_query,
- uint64_t *bsize, uint64_t *dfree,
- uint64_t *dsize)
+ 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_DISK_FREE(handle, path, small_query,
+ return SMB_VFS_NEXT_DISK_FREE(handle, path,
bsize, dfree, dsize);
}
return -1;
}
- ret = SMB_VFS_NEXT_DISK_FREE(handle, conv, small_query, bsize, dfree,
- dsize);
+ 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_QUOTA(handle, conv, qtype, id, dq);
saved_errno = errno;
TALLOC_FREE(conv);
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;
+ const char *basedir = NULL;
+ const char *snapsharepath = NULL;
const char *mount_point;
DEBUG(10, (__location__ ": cnum[%u], connectpath[%s]\n",
return ret;
}
- config = talloc_zero(handle->conn, struct shadow_copy2_config);
+ 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);
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",
"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);
char *p;
p = strstr(handle->conn->connectpath, mount_point);
if (p != handle->conn->connectpath) {
- DEBUG(1, ("Warning: mount_point (%s) is not a "
- "subdirectory of the share root "
- "(%s). Ignoring provided value.\n",
- mount_point,
- 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;
}
}
config->mount_point = shadow_copy2_find_mount_point(config,
handle);
if (config->mount_point == NULL) {
- DEBUG(0, (__location__ ": shadow_copy2_find_mount_point"
- " failed: %s\n", strerror(errno)));
+ DBG_WARNING("shadow_copy2_find_mount_point "
+ "of the share root '%s' failed: %s\n",
+ handle->conn->connectpath, strerror(errno));
return -1;
}
}
"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);
"mount point (%s). "
"Disabling basedir\n",
basedir, config->mount_point));
- } else {
- config->basedir = talloc_strdup(config,
- basedir);
- if (config->basedir == NULL) {
- DEBUG(0, ("talloc_strdup() failed\n"));
- errno = ENOMEM;
- return -1;
- }
+ basedir = NULL;
}
}
}
- if (config->snapdirseverywhere && config->basedir != NULL) {
+ if (config->snapdirseverywhere && basedir != NULL) {
DEBUG(1, (__location__ " Warning: 'basedir' is incompatible "
"with 'snapdirseverywhere'. Disabling basedir.\n"));
- TALLOC_FREE(config->basedir);
+ 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 (config->crossmountpoints && config->basedir != NULL) {
- DEBUG(1, (__location__ " Warning: 'basedir' is incompatible "
- "with 'crossmountpoints'. Disabling basedir.\n"));
- TALLOC_FREE(config->basedir);
+ if (basedir != NULL && snapsharepath != NULL) {
+ DBG_WARNING("Warning: 'snapsharepath' is incompatible with "
+ "'basedir'. Disabling snapsharepath\n");
+ snapsharepath = NULL;
}
- if (config->basedir == NULL) {
- config->basedir = config->mount_point;
+ 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 (strlen(config->basedir) != strlen(handle->conn->connectpath)) {
+ 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(config->basedir));
+ handle->conn->connectpath + strlen(basedir));
if (config->rel_connectpath == NULL) {
DEBUG(0, ("talloc_strdup() failed\n"));
errno = ENOMEM;
}
}
+ 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"
- " basedir: '%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"
" sort order: %s\n"
"",
handle->conn->connectpath,
- config->basedir,
config->mount_point,
config->rel_connectpath,
config->snapdir,
+ snapprefix,
+ config->delimiter,
config->snapshot_basepath,
config->gmt_format,
config->use_sscanf ? "yes" : "no",
));
- SMB_VFS_HANDLE_SET_DATA(handle, config,
- NULL, struct shadow_copy2_config,
+ SMB_VFS_HANDLE_SET_DATA(handle, priv,
+ NULL, struct shadow_copy2_private,
return -1);
return 0;
.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,
.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