* 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
+ * This is a second implementation of a shadow copy module for exposing
* file system snapshots to windows clients as shadow copies.
*
* See the manual page for documentation.
*/
#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"
+#include "libcli/security/security.h"
+#include "lib/util/tevent_unix.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;
+ /* talloc'ed realpath return. */
+ struct smb_filename *shadow_realpath;
+};
+
+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;
}
}
* 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
+ * absolute path), this is the initial 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.
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,
config->snapdir, snaptime_string);
}
if (result == NULL) {
- DEBUG(1, (__location__ " talloc_asprintf failed\n"));
+ DBG_WARNING("talloc_asprintf failed\n");
}
return result;
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"));
+ DBG_WARNING("talloc_asprintf failed\n");
}
return result;
}
-/**
- * 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,
- struct vfs_handle_struct *handle,
- const char *name,
- time_t *ptimestamp,
- char **pstripped)
+static char *make_path_absolute(TALLOC_CTX *mem_ctx,
+ struct shadow_copy2_private *priv,
+ const char *name)
{
- struct tm tm;
- time_t timestamp;
- const char *p;
- char *q;
- char *stripped;
- size_t rest_len, dst_len;
- struct shadow_copy2_config *config;
+ 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;
+}
- SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
- return false);
+/* 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;
+ }
+ /* The cwd_len != 1 case is for $cwd == '/' */
+ if (cwd_len != 1 &&
+ 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;
+}
+
+static bool shadow_copy2_snapshot_to_gmt(vfs_handle_struct *handle,
+ const char *name,
+ char *gmt, size_t gmt_len);
+
+/*
+ * Check if an incoming filename is already a snapshot converted pathname.
+ *
+ * If so, it returns the pathname truncated at the snapshot point which
+ * will be used as the connectpath.
+ */
+
+static int check_for_converted_path(TALLOC_CTX *mem_ctx,
+ struct vfs_handle_struct *handle,
+ struct shadow_copy2_private *priv,
+ char *abs_path,
+ bool *ppath_already_converted,
+ char **pconnectpath)
+{
+ size_t snapdirlen = 0;
+ char *p = strstr_m(abs_path, priv->config->snapdir);
+ char *q = NULL;
+ char *connect_path = NULL;
+ char snapshot[GMT_NAME_LEN+1];
- DEBUG(10, (__location__ ": enter path '%s'\n", name));
+ *ppath_already_converted = false;
- p = strstr_m(name, "@GMT-");
if (p == NULL) {
- DEBUG(11, ("@GMT not found\n"));
- goto no_snapshot;
+ /* Must at least contain shadow:snapdir. */
+ return 0;
}
- 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;
+
+ if (priv->config->snapdir[0] == '/' &&
+ p != abs_path) {
+ /* Absolute shadow:snapdir must be at the start. */
+ return 0;
}
- q = strptime(p, GMT_FORMAT, &tm);
- if (q == NULL) {
- DEBUG(10, ("strptime failed\n"));
- goto no_snapshot;
+
+ snapdirlen = strlen(priv->config->snapdir);
+ if (p[snapdirlen] != '/') {
+ /* shadow:snapdir must end as a separate component. */
+ return 0;
}
- tm.tm_isdst = -1;
- timestamp = timegm(&tm);
- if (timestamp == (time_t)-1) {
- DEBUG(10, ("timestamp==-1\n"));
- goto no_snapshot;
+
+ if (p > abs_path && p[-1] != '/') {
+ /* shadow:snapdir must start as a separate component. */
+ return 0;
}
- if (q[0] == '\0') {
+
+ p += snapdirlen;
+ p++; /* Move past the / */
+
+ /*
+ * Need to return up to the next path
+ * component after the time.
+ * This will be used as the connectpath.
+ */
+ q = strchr(p, '/');
+ if (q == NULL) {
/*
- * 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.
+ * No next path component.
+ * Use entire string.
*/
- if (pstripped != NULL) {
- stripped = talloc_strndup(mem_ctx, name, p - name);
- if (stripped == NULL) {
- return false;
- }
- *pstripped = stripped;
- }
- *ptimestamp = timestamp;
- return true;
+ connect_path = talloc_strdup(mem_ctx,
+ abs_path);
+ } else {
+ connect_path = talloc_strndup(mem_ctx,
+ abs_path,
+ q - abs_path);
}
- 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;
+ if (connect_path == NULL) {
+ return ENOMEM;
}
- q += 1;
- rest_len = strlen(q);
- dst_len = (p-name) + rest_len;
+ /*
+ * Point p at the same offset in connect_path as
+ * it is in abs_path.
+ */
- if (config->snapdirseverywhere) {
- char *insert;
- bool have_insert;
- insert = shadow_copy2_insert_string(talloc_tos(), handle,
- timestamp);
- if (insert == NULL) {
- errno = ENOMEM;
- return false;
- }
+ p = &connect_path[p - abs_path];
- DEBUG(10, (__location__ ": snapdirseverywhere mode.\n"
- "path '%s'.\n"
- "insert string '%s'\n", name, insert));
+ /*
+ * Now ensure there is a time string at p.
+ * The SMB-format @GMT-token string is returned
+ * in snapshot.
+ */
- have_insert = (strstr(name, insert+1) != NULL);
- 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;
+ if (!shadow_copy2_snapshot_to_gmt(handle,
+ p,
+ snapshot,
+ sizeof(snapshot))) {
+ TALLOC_FREE(connect_path);
+ return 0;
+ }
- snapshot_path = shadow_copy2_snapshot_path(talloc_tos(),
- handle,
- timestamp);
- if (snapshot_path == NULL) {
- errno = ENOMEM;
- return false;
- }
+ if (pconnectpath != NULL) {
+ *pconnectpath = connect_path;
+ }
- DEBUG(10, (__location__ " path: '%s'.\n"
- "snapshot path: '%s'\n", name, snapshot_path));
+ *ppath_already_converted = true;
- 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;
+ DBG_DEBUG("path |%s| is already converted. "
+ "connect path = |%s|\n",
+ abs_path,
+ connect_path);
+
+ return 0;
+}
+
+/**
+ * This function does two things.
+ *
+ * 1). Checks if an incoming filename is already a
+ * snapshot converted pathname.
+ * If so, it returns the pathname truncated
+ * at the snapshot point which will be used
+ * as the connectpath, and then does an early return.
+ *
+ * 2). Checks if an incoming filename contains an
+ * SMB-layer @GMT- style timestamp.
+ * If so, it strips the timestamp, and returns
+ * both the timestamp and the stripped path
+ * (making it cwd-relative).
+ */
+
+static bool _shadow_copy2_strip_snapshot_internal(TALLOC_CTX *mem_ctx,
+ struct vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ time_t *ptimestamp,
+ char **pstripped,
+ char **psnappath,
+ bool *_already_converted,
+ const char *function)
+{
+ char *stripped = NULL;
+ struct shadow_copy2_private *priv;
+ char *abs_path = NULL;
+ bool ret = true;
+ bool already_converted = false;
+ int err = 0;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return false);
+
+ DBG_DEBUG("[from %s()] Path '%s'\n",
+ function, smb_fname_str_dbg(smb_fname));
+
+ if (_already_converted != NULL) {
+ *_already_converted = false;
+ }
+
+ abs_path = make_path_absolute(mem_ctx, priv, smb_fname->base_name);
+ if (abs_path == NULL) {
+ ret = false;
+ goto out;
+ }
+
+ DBG_DEBUG("abs path '%s'\n", abs_path);
+
+ err = check_for_converted_path(mem_ctx,
+ handle,
+ priv,
+ abs_path,
+ &already_converted,
+ psnappath);
+ if (err != 0) {
+ /* error in conversion. */
+ ret = false;
+ goto out;
+ }
+
+ if (already_converted) {
+ if (_already_converted != NULL) {
+ *_already_converted = true;
}
- talloc_free(snapshot_path);
+ goto out;
+ }
+
+ if (smb_fname->twrp == 0) {
+ goto out;
+ }
+
+ if (ptimestamp != NULL) {
+ *ptimestamp = nt_time_to_unix(smb_fname->twrp);
}
if (pstripped != NULL) {
- stripped = talloc_array(mem_ctx, char, dst_len+1);
+ stripped = talloc_strdup(mem_ctx, abs_path);
if (stripped == NULL) {
- errno = ENOMEM;
- return false;
+ ret = false;
+ goto out;
}
- if (p > name) {
- memcpy(stripped, name, p-name);
- }
- if (rest_len > 0) {
- memcpy(stripped + (p-name), q, rest_len);
+
+ if (smb_fname->base_name[0] != '/') {
+ ret = make_relative_path(priv->shadow_cwd, stripped);
+ if (!ret) {
+ DBG_DEBUG("Path '%s' "
+ "doesn't start with cwd '%s'\n",
+ stripped, priv->shadow_cwd);
+ ret = false;
+ errno = ENOENT;
+ goto out;
+ }
}
- stripped[dst_len] = '\0';
*pstripped = stripped;
}
- *ptimestamp = timestamp;
- return true;
-no_snapshot:
- *ptimestamp = 0;
- return true;
+
+ ret = true;
+
+ out:
+ TALLOC_FREE(abs_path);
+ return ret;
+}
+
+#define shadow_copy2_strip_snapshot_internal(mem_ctx, handle, orig_name, \
+ ptimestamp, pstripped, psnappath, _already_converted) \
+ _shadow_copy2_strip_snapshot_internal((mem_ctx), (handle), (orig_name), \
+ (ptimestamp), (pstripped), (psnappath), (_already_converted), \
+ __FUNCTION__)
+
+static bool _shadow_copy2_strip_snapshot(TALLOC_CTX *mem_ctx,
+ struct vfs_handle_struct *handle,
+ const struct smb_filename *orig_name,
+ time_t *ptimestamp,
+ char **pstripped,
+ const char *function)
+{
+ return _shadow_copy2_strip_snapshot_internal(mem_ctx,
+ handle,
+ orig_name,
+ ptimestamp,
+ pstripped,
+ NULL,
+ NULL,
+ function);
+}
+
+#define shadow_copy2_strip_snapshot(mem_ctx, handle, orig_name, \
+ ptimestamp, pstripped) \
+ _shadow_copy2_strip_snapshot((mem_ctx), (handle), (orig_name), \
+ (ptimestamp), (pstripped), __FUNCTION__)
+
+static bool _shadow_copy2_strip_snapshot_converted(TALLOC_CTX *mem_ctx,
+ struct vfs_handle_struct *handle,
+ const struct smb_filename *orig_name,
+ time_t *ptimestamp,
+ char **pstripped,
+ bool *is_converted,
+ const char *function)
+{
+ return _shadow_copy2_strip_snapshot_internal(mem_ctx,
+ handle,
+ orig_name,
+ ptimestamp,
+ pstripped,
+ NULL,
+ is_converted,
+ function);
}
+#define shadow_copy2_strip_snapshot_converted(mem_ctx, handle, orig_name, \
+ ptimestamp, pstripped, is_converted) \
+ _shadow_copy2_strip_snapshot_converted((mem_ctx), (handle), (orig_name), \
+ (ptimestamp), (pstripped), (is_converted), __FUNCTION__)
+
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;
- int i, saved_errno;
+ size_t insertlen, connectlen = 0;
+ int saved_errno = 0;
+ int i;
size_t min_offset;
struct shadow_copy2_config *config;
+ struct shadow_copy2_private *priv;
+ size_t in_share_offset = 0;
- SMB_VFS_HANDLE_GET_DATA(handle, 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) {
goto fail;
}
- ZERO_STRUCT(converted_fname);
- converted_fname.base_name = converted;
+ converted_fname = (struct smb_filename) {
+ .base_name = converted,
+ };
ret = SMB_VFS_NEXT_LSTAT(handle, &converted_fname);
DEBUG(10, ("Trying[not snapdirseverywhere] %s: %d (%s)\n",
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;
insertlen = talloc_get_size(insert)-1;
/*
- * Note: We deliberatly don't expensively initialize the
+ * Note: We deliberately 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
memcpy(converted, path, pathlen+1);
converted[pathlen+insertlen] = '\0';
- ZERO_STRUCT(converted_fname);
- converted_fname.base_name = converted;
+ converted_fname = (struct smb_filename) {
+ .base_name = converted,
+ };
for (i = num_slashes-1; i>=0; i--) {
int ret;
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) {
/*
* This is a valid condition: We appended the
- * .snaphots/@GMT.. to a file name. Just try
+ * .snapshots/@GMT.. to a file name. Just try
* with the upper levels.
*/
continue;
errno = ENOENT;
}
fail:
- saved_errno = errno;
+ if (result == NULL) {
+ saved_errno = errno;
+ }
TALLOC_FREE(converted);
TALLOC_FREE(insert);
TALLOC_FREE(slashes);
TALLOC_FREE(path);
- errno = saved_errno;
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
return result;
}
+/**
+ * Convert from a name as handed in via the SMB layer
+ * and a timestamp into the local path of the snapshot
+ * of the provided file at the provided time.
+ */
+static char *shadow_copy2_convert(TALLOC_CTX *mem_ctx,
+ struct vfs_handle_struct *handle,
+ const char *name, time_t timestamp)
+{
+ return shadow_copy2_do_convert(mem_ctx, handle, name, timestamp, NULL);
+}
+
/*
modify a sbuf return to ensure that inodes in the shadow directory
are different from those in the main directory
static void convert_sbuf(vfs_handle_struct *handle, const char *fname,
SMB_STRUCT_STAT *sbuf)
{
- struct shadow_copy2_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) {
- /* some snapshot systems, like GPFS, return the name
+ if (priv->config->fixinodes) {
+ /* some snapshot systems, like GPFS, return the same
device:inode for the snapshot files as the current
files. That breaks the 'restore' button in the shadow copy
GUI, as the client gets a sharing violation.
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)
-{
- time_t timestamp;
- char *stripped;
- DIR *ret;
- int saved_errno;
- char *conv;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
- return NULL;
- }
- if (timestamp == 0) {
- return SMB_VFS_NEXT_OPENDIR(handle, 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);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
-}
-
-static int shadow_copy2_rename(vfs_handle_struct *handle,
- const struct smb_filename *smb_fname_src,
- const struct smb_filename *smb_fname_dst)
+static int shadow_copy2_renameat(vfs_handle_struct *handle,
+ files_struct *srcfsp,
+ const struct smb_filename *smb_fname_src,
+ files_struct *dstfsp,
+ const struct smb_filename *smb_fname_dst)
{
- time_t timestamp_src, timestamp_dst;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
- smb_fname_src->base_name,
- ×tamp_src, NULL)) {
+ time_t timestamp_src = 0;
+ time_t timestamp_dst = 0;
+ char *snappath_src = NULL;
+ char *snappath_dst = NULL;
+
+ if (!shadow_copy2_strip_snapshot_internal(talloc_tos(), handle,
+ smb_fname_src,
+ ×tamp_src, NULL, &snappath_src,
+ NULL)) {
return -1;
}
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
- smb_fname_dst->base_name,
- ×tamp_dst, NULL)) {
+ if (!shadow_copy2_strip_snapshot_internal(talloc_tos(), handle,
+ smb_fname_dst,
+ ×tamp_dst, NULL, &snappath_dst,
+ NULL)) {
return -1;
}
if (timestamp_src != 0) {
errno = EROFS;
return -1;
}
- return SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
-}
-
-static int shadow_copy2_symlink(vfs_handle_struct *handle,
- const char *oldname, const char *newname)
-{
- time_t timestamp_old, timestamp_new;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, oldname,
- ×tamp_old, NULL)) {
- return -1;
- }
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, newname,
- ×tamp_new, NULL)) {
+ /*
+ * Don't allow rename on already converted paths.
+ */
+ if (snappath_src != NULL) {
+ errno = EXDEV;
return -1;
}
- if ((timestamp_old != 0) || (timestamp_new != 0)) {
+ if (snappath_dst != NULL) {
errno = EROFS;
return -1;
}
- return SMB_VFS_NEXT_SYMLINK(handle, oldname, newname);
+ return SMB_VFS_NEXT_RENAMEAT(handle,
+ srcfsp,
+ smb_fname_src,
+ dstfsp,
+ smb_fname_dst);
}
-static int shadow_copy2_link(vfs_handle_struct *handle,
- const char *oldname, const char *newname)
+static int shadow_copy2_symlinkat(vfs_handle_struct *handle,
+ const struct smb_filename *link_contents,
+ struct files_struct *dirfsp,
+ const struct smb_filename *new_smb_fname)
{
- time_t timestamp_old, timestamp_new;
+ time_t timestamp_old = 0;
+ time_t timestamp_new = 0;
+ char *snappath_old = NULL;
+ char *snappath_new = NULL;
+
+ if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
+ handle,
+ link_contents,
+ ×tamp_old,
+ NULL,
+ &snappath_old,
+ NULL)) {
+ return -1;
+ }
+ if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
+ handle,
+ new_smb_fname,
+ ×tamp_new,
+ NULL,
+ &snappath_new,
+ NULL)) {
+ return -1;
+ }
+ if ((timestamp_old != 0) || (timestamp_new != 0)) {
+ errno = EROFS;
+ return -1;
+ }
+ /*
+ * Don't allow symlinks on already converted paths.
+ */
+ if ((snappath_old != NULL) || (snappath_new != NULL)) {
+ errno = EROFS;
+ return -1;
+ }
+ return SMB_VFS_NEXT_SYMLINKAT(handle,
+ link_contents,
+ dirfsp,
+ new_smb_fname);
+}
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, oldname,
- ×tamp_old, NULL)) {
+static int shadow_copy2_linkat(vfs_handle_struct *handle,
+ files_struct *srcfsp,
+ const struct smb_filename *old_smb_fname,
+ files_struct *dstfsp,
+ const struct smb_filename *new_smb_fname,
+ int flags)
+{
+ time_t timestamp_old = 0;
+ time_t timestamp_new = 0;
+ char *snappath_old = NULL;
+ char *snappath_new = NULL;
+
+ if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
+ handle,
+ old_smb_fname,
+ ×tamp_old,
+ NULL,
+ &snappath_old,
+ NULL)) {
return -1;
}
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, newname,
- ×tamp_new, NULL)) {
+ if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
+ handle,
+ new_smb_fname,
+ ×tamp_new,
+ NULL,
+ &snappath_new,
+ NULL)) {
return -1;
}
if ((timestamp_old != 0) || (timestamp_new != 0)) {
errno = EROFS;
return -1;
}
- return SMB_VFS_NEXT_LINK(handle, oldname, newname);
+ /*
+ * Don't allow links on already converted paths.
+ */
+ if ((snappath_old != NULL) || (snappath_new != NULL)) {
+ errno = EROFS;
+ return -1;
+ }
+ return SMB_VFS_NEXT_LINKAT(handle,
+ srcfsp,
+ old_smb_fname,
+ dstfsp,
+ new_smb_fname,
+ flags);
}
static int shadow_copy2_stat(vfs_handle_struct *handle,
struct smb_filename *smb_fname)
{
- time_t timestamp;
- char *stripped, *tmp;
- int ret, saved_errno;
+ struct shadow_copy2_private *priv = NULL;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ bool converted = false;
+ char *abspath = NULL;
+ char *tmp;
+ int ret = 0;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
- smb_fname->base_name,
- ×tamp, &stripped)) {
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return -1);
+
+ if (!shadow_copy2_strip_snapshot_converted(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ &stripped,
+ &converted)) {
return -1;
}
if (timestamp == 0) {
- return SMB_VFS_NEXT_STAT(handle, smb_fname);
+ TALLOC_FREE(stripped);
+ ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
+ if (ret != 0) {
+ return ret;
+ }
+ if (!converted) {
+ return 0;
+ }
+
+ abspath = make_path_absolute(talloc_tos(),
+ priv,
+ smb_fname->base_name);
+ if (abspath == NULL) {
+ return -1;
+ }
+
+ convert_sbuf(handle, abspath, &smb_fname->st);
+ TALLOC_FREE(abspath);
+ return 0;
}
tmp = smb_fname->base_name;
}
ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
- saved_errno = errno;
+ if (ret != 0) {
+ goto out;
+ }
+
+ abspath = make_path_absolute(talloc_tos(),
+ priv,
+ smb_fname->base_name);
+ if (abspath == NULL) {
+ ret = -1;
+ goto out;
+ }
+ convert_sbuf(handle, abspath, &smb_fname->st);
+ TALLOC_FREE(abspath);
+
+out:
TALLOC_FREE(smb_fname->base_name);
smb_fname->base_name = tmp;
- if (ret == 0) {
- convert_sbuf(handle, smb_fname->base_name, &smb_fname->st);
- }
- errno = saved_errno;
return ret;
}
static int shadow_copy2_lstat(vfs_handle_struct *handle,
struct smb_filename *smb_fname)
{
- time_t timestamp;
- char *stripped, *tmp;
- int ret, saved_errno;
+ struct shadow_copy2_private *priv = NULL;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ bool converted = false;
+ char *abspath = NULL;
+ char *tmp;
+ int ret = 0;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
- smb_fname->base_name,
- ×tamp, &stripped)) {
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return -1);
+
+ if (!shadow_copy2_strip_snapshot_converted(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ &stripped,
+ &converted)) {
return -1;
}
if (timestamp == 0) {
- return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
+ TALLOC_FREE(stripped);
+ ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
+ if (ret != 0) {
+ return ret;
+ }
+ if (!converted) {
+ return 0;
+ }
+
+ abspath = make_path_absolute(talloc_tos(),
+ priv,
+ smb_fname->base_name);
+ if (abspath == NULL) {
+ return -1;
+ }
+
+ convert_sbuf(handle, abspath, &smb_fname->st);
+ TALLOC_FREE(abspath);
+ return 0;
}
tmp = smb_fname->base_name;
}
ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
- saved_errno = errno;
+ if (ret != 0) {
+ goto out;
+ }
+
+ abspath = make_path_absolute(talloc_tos(),
+ priv,
+ smb_fname->base_name);
+ if (abspath == NULL) {
+ ret = -1;
+ goto out;
+ }
+ convert_sbuf(handle, abspath, &smb_fname->st);
+ TALLOC_FREE(abspath);
+
+out:
TALLOC_FREE(smb_fname->base_name);
smb_fname->base_name = tmp;
- if (ret == 0) {
- convert_sbuf(handle, smb_fname->base_name, &smb_fname->st);
- }
- errno = saved_errno;
return ret;
}
static int shadow_copy2_fstat(vfs_handle_struct *handle, files_struct *fsp,
SMB_STRUCT_STAT *sbuf)
{
- time_t timestamp;
+ struct shadow_copy2_private *priv = NULL;
+ time_t timestamp = 0;
+ struct smb_filename *orig_smb_fname = NULL;
+ struct smb_filename vss_smb_fname;
+ struct smb_filename *orig_base_smb_fname = NULL;
+ struct smb_filename vss_base_smb_fname;
+ char *stripped = NULL;
+ char *abspath = NULL;
+ bool converted = false;
+ bool ok;
int ret;
- ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
- if (ret == -1) {
- return ret;
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return -1);
+
+ ok = shadow_copy2_strip_snapshot_converted(talloc_tos(),
+ handle,
+ fsp->fsp_name,
+ ×tamp,
+ &stripped,
+ &converted);
+ if (!ok) {
+ return -1;
}
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
- fsp->fsp_name->base_name,
- ×tamp, NULL)) {
+
+ if (timestamp == 0) {
+ TALLOC_FREE(stripped);
+ ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
+ if (ret != 0) {
+ return ret;
+ }
+ if (!converted) {
+ return 0;
+ }
+
+ abspath = make_path_absolute(talloc_tos(),
+ priv,
+ fsp->fsp_name->base_name);
+ if (abspath == NULL) {
+ return -1;
+ }
+
+ convert_sbuf(handle, abspath, sbuf);
+ TALLOC_FREE(abspath);
return 0;
}
- if (timestamp != 0) {
- convert_sbuf(handle, fsp->fsp_name->base_name, sbuf);
+
+ vss_smb_fname = *fsp->fsp_name;
+ vss_smb_fname.base_name = shadow_copy2_convert(talloc_tos(),
+ handle,
+ stripped,
+ timestamp);
+ TALLOC_FREE(stripped);
+ if (vss_smb_fname.base_name == NULL) {
+ return -1;
}
- return 0;
+
+ orig_smb_fname = fsp->fsp_name;
+ fsp->fsp_name = &vss_smb_fname;
+
+ if (fsp_is_alternate_stream(fsp)) {
+ vss_base_smb_fname = *fsp->base_fsp->fsp_name;
+ vss_base_smb_fname.base_name = vss_smb_fname.base_name;
+ orig_base_smb_fname = fsp->base_fsp->fsp_name;
+ fsp->base_fsp->fsp_name = &vss_base_smb_fname;
+ }
+
+ ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
+ if (ret != 0) {
+ goto out;
+ }
+
+ abspath = make_path_absolute(talloc_tos(),
+ priv,
+ fsp->fsp_name->base_name);
+ if (abspath == NULL) {
+ ret = -1;
+ goto out;
+ }
+
+ convert_sbuf(handle, abspath, sbuf);
+ TALLOC_FREE(abspath);
+
+out:
+ fsp->fsp_name = orig_smb_fname;
+ if (fsp_is_alternate_stream(fsp)) {
+ fsp->base_fsp->fsp_name = orig_base_smb_fname;
+ }
+
+ return ret;
}
-static int shadow_copy2_open(vfs_handle_struct *handle,
- struct smb_filename *smb_fname, files_struct *fsp,
- int flags, mode_t mode)
+static int shadow_copy2_fstatat(
+ struct vfs_handle_struct *handle,
+ const struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname_in,
+ SMB_STRUCT_STAT *sbuf,
+ int flags)
{
- time_t timestamp;
- char *stripped, *tmp;
- int ret, saved_errno;
+ struct shadow_copy2_private *priv = NULL;
+ struct smb_filename *smb_fname = NULL;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ char *abspath = NULL;
+ bool converted = false;
+ int ret;
+ bool ok;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
- smb_fname->base_name,
- ×tamp, &stripped)) {
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return -1);
+
+ smb_fname = full_path_from_dirfsp_atname(talloc_tos(),
+ dirfsp,
+ smb_fname_in);
+ if (smb_fname == NULL) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ ok = shadow_copy2_strip_snapshot_converted(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ &stripped,
+ &converted);
+ if (!ok) {
return -1;
}
if (timestamp == 0) {
- return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
+ TALLOC_FREE(stripped);
+ ret = SMB_VFS_NEXT_FSTATAT(
+ handle, dirfsp, smb_fname_in, sbuf, flags);
+ if (ret != 0) {
+ return ret;
+ }
+ if (!converted) {
+ return 0;
+ }
+
+ abspath = make_path_absolute(
+ talloc_tos(), priv, smb_fname->base_name);
+ if (abspath == NULL) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ convert_sbuf(handle, abspath, sbuf);
+ TALLOC_FREE(abspath);
+ return 0;
}
- tmp = smb_fname->base_name;
smb_fname->base_name = shadow_copy2_convert(
- talloc_tos(), handle, stripped, timestamp);
+ smb_fname, handle, stripped, timestamp);
TALLOC_FREE(stripped);
-
if (smb_fname->base_name == NULL) {
- smb_fname->base_name = tmp;
+ TALLOC_FREE(smb_fname);
+ errno = ENOMEM;
return -1;
}
- ret = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
- saved_errno = errno;
+ ret = SMB_VFS_NEXT_FSTATAT(handle,
+ dirfsp,
+ smb_fname,
+ sbuf,
+ flags);
+ if (ret != 0) {
+ int saved_errno = errno;
+ TALLOC_FREE(smb_fname);
+ errno = saved_errno;
+ return -1;
+ }
- TALLOC_FREE(smb_fname->base_name);
- smb_fname->base_name = tmp;
+ abspath = make_path_absolute(
+ talloc_tos(), priv, smb_fname->base_name);
+ if (abspath == NULL) {
+ TALLOC_FREE(smb_fname);
+ errno = ENOMEM;
+ return -1;
+ }
- errno = saved_errno;
- return ret;
+ convert_sbuf(handle, abspath, sbuf);
+ TALLOC_FREE(abspath);
+
+ TALLOC_FREE(smb_fname);
+
+ return 0;
}
-static int shadow_copy2_unlink(vfs_handle_struct *handle,
- const struct smb_filename *smb_fname)
+static struct smb_filename *shadow_copy2_openat_name(
+ TALLOC_CTX *mem_ctx,
+ const struct files_struct *dirfsp,
+ const struct files_struct *fsp,
+ const struct smb_filename *smb_fname_in)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- struct smb_filename *conv;
+ struct smb_filename *result = NULL;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
- smb_fname->base_name,
- ×tamp, &stripped)) {
- return -1;
+ if (fsp->base_fsp != NULL) {
+ struct smb_filename *base_fname = fsp->base_fsp->fsp_name;
+
+ if (smb_fname_in->base_name[0] == '/') {
+ /*
+ * Special-case stream names from streams_depot
+ */
+ result = cp_smb_filename(mem_ctx, smb_fname_in);
+ } else {
+
+ SMB_ASSERT(is_named_stream(smb_fname_in));
+
+ result = synthetic_smb_fname(mem_ctx,
+ base_fname->base_name,
+ smb_fname_in->stream_name,
+ &smb_fname_in->st,
+ smb_fname_in->twrp,
+ smb_fname_in->flags);
+ }
+ } else {
+ result = full_path_from_dirfsp_atname(
+ mem_ctx, dirfsp, smb_fname_in);
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
+
+ return result;
+}
+
+static int shadow_copy2_openat(vfs_handle_struct *handle,
+ const struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname_in,
+ struct files_struct *fsp,
+ const struct vfs_open_how *_how)
+{
+ struct vfs_open_how how = *_how;
+ struct smb_filename *smb_fname = NULL;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ int saved_errno = 0;
+ int ret;
+ bool ok;
+
+ if (how.resolve != 0) {
+ errno = ENOSYS;
+ return -1;
}
- conv = cp_smb_filename(talloc_tos(), smb_fname);
- if (conv == NULL) {
+
+ smb_fname = shadow_copy2_openat_name(
+ talloc_tos(), dirfsp, fsp, smb_fname_in);
+ if (smb_fname == NULL) {
errno = ENOMEM;
return -1;
}
- conv->base_name = shadow_copy2_convert(
- conv, handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv->base_name == NULL) {
+
+ ok = shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ &stripped);
+ if (!ok) {
+ TALLOC_FREE(smb_fname);
return -1;
}
- ret = SMB_VFS_NEXT_UNLINK(handle, conv);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
+ if (timestamp == 0) {
+ TALLOC_FREE(stripped);
+ TALLOC_FREE(smb_fname);
+ return SMB_VFS_NEXT_OPENAT(handle,
+ dirfsp,
+ smb_fname_in,
+ fsp,
+ &how);
+ }
+
+ smb_fname->base_name = shadow_copy2_convert(smb_fname,
+ handle,
+ stripped,
+ timestamp);
+ if (smb_fname->base_name == NULL) {
+ int err = errno;
+ TALLOC_FREE(stripped);
+ TALLOC_FREE(smb_fname);
+ errno = err;
+ return -1;
+ }
+ TALLOC_FREE(stripped);
+
+ ret = SMB_VFS_NEXT_OPENAT(handle,
+ dirfsp,
+ smb_fname,
+ fsp,
+ &how);
+ if (ret == -1) {
+ saved_errno = errno;
+ }
+
+ TALLOC_FREE(smb_fname);
+
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
return ret;
}
-static int shadow_copy2_chmod(vfs_handle_struct *handle, const char *fname,
- mode_t mode)
+static int shadow_copy2_unlinkat(vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ int flags)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- char *conv;
+ time_t timestamp = 0;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
+ smb_fname,
+ ×tamp, NULL)) {
return -1;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_CHMOD(handle, fname, mode);
+ if (timestamp != 0) {
+ errno = EROFS;
+ return -1;
}
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
+ return SMB_VFS_NEXT_UNLINKAT(handle,
+ dirfsp,
+ smb_fname,
+ flags);
+}
+
+static int shadow_copy2_fchmod(vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ mode_t mode)
+{
+ time_t timestamp = 0;
+ const struct smb_filename *smb_fname = NULL;
+
+ smb_fname = fsp->fsp_name;
+ if (!shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ NULL)) {
return -1;
}
- ret = SMB_VFS_NEXT_CHMOD(handle, conv, mode);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+ if (timestamp != 0) {
+ errno = EROFS;
+ return -1;
+ }
+ return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
}
-static int shadow_copy2_chown(vfs_handle_struct *handle, const char *fname,
- uid_t uid, gid_t gid)
+static void store_cwd_data(vfs_handle_struct *handle,
+ const char *connectpath)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- char *conv;
+ struct shadow_copy2_private *priv = NULL;
+ struct smb_filename *cwd_fname = NULL;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return);
+
+ TALLOC_FREE(priv->shadow_cwd);
+ cwd_fname = SMB_VFS_NEXT_GETWD(handle, talloc_tos());
+ if (cwd_fname == NULL) {
+ smb_panic("getwd failed\n");
+ }
+ DBG_DEBUG("shadow cwd = %s\n", cwd_fname->base_name);
+ priv->shadow_cwd = talloc_strdup(priv, cwd_fname->base_name);
+ TALLOC_FREE(cwd_fname);
+ if (priv->shadow_cwd == NULL) {
+ smb_panic("talloc failed\n");
+ }
+ TALLOC_FREE(priv->shadow_connectpath);
+ if (connectpath) {
+ DBG_DEBUG("shadow connectpath = %s\n", connectpath);
+ priv->shadow_connectpath = talloc_strdup(priv, connectpath);
+ if (priv->shadow_connectpath == NULL) {
+ smb_panic("talloc failed\n");
+ }
+ }
+}
+
+static int shadow_copy2_chdir(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname)
+{
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ char *snappath = NULL;
+ int ret = -1;
+ int saved_errno = 0;
+ char *conv = NULL;
+ size_t rootpath_len = 0;
+ struct smb_filename *conv_smb_fname = NULL;
+
+ if (!shadow_copy2_strip_snapshot_internal(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ &stripped,
+ &snappath,
+ NULL)) {
return -1;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_CHOWN(handle, fname, uid, gid);
+ if (stripped != NULL) {
+ conv = shadow_copy2_do_convert(talloc_tos(),
+ handle,
+ stripped,
+ timestamp,
+ &rootpath_len);
+ TALLOC_FREE(stripped);
+ if (conv == NULL) {
+ return -1;
+ }
+ conv_smb_fname = synthetic_smb_fname(talloc_tos(),
+ conv,
+ NULL,
+ NULL,
+ 0,
+ smb_fname->flags);
+ } else {
+ conv_smb_fname = cp_smb_filename(talloc_tos(), smb_fname);
}
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
+
+ if (conv_smb_fname == NULL) {
+ TALLOC_FREE(conv);
+ errno = ENOMEM;
return -1;
}
- ret = SMB_VFS_NEXT_CHOWN(handle, conv, uid, gid);
- saved_errno = errno;
+
+ ret = SMB_VFS_NEXT_CHDIR(handle, conv_smb_fname);
+ if (ret == -1) {
+ saved_errno = errno;
+ }
+
+ if (ret == 0) {
+ if (conv != NULL && rootpath_len != 0) {
+ conv[rootpath_len] = '\0';
+ } else if (snappath != 0) {
+ TALLOC_FREE(conv);
+ conv = snappath;
+ }
+ store_cwd_data(handle, conv);
+ }
+
+ TALLOC_FREE(stripped);
TALLOC_FREE(conv);
- errno = saved_errno;
+ TALLOC_FREE(conv_smb_fname);
+
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
return ret;
}
-static int shadow_copy2_chdir(vfs_handle_struct *handle,
- const char *fname)
+static int shadow_copy2_fntimes(vfs_handle_struct *handle,
+ files_struct *fsp,
+ struct smb_file_time *ft)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- char *conv;
+ time_t timestamp = 0;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ if (!shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ fsp->fsp_name,
+ ×tamp,
+ NULL)) {
return -1;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_CHDIR(handle, fname);
- }
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
+ if (timestamp != 0) {
+ errno = EROFS;
return -1;
}
- ret = SMB_VFS_NEXT_CHDIR(handle, conv);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+ return SMB_VFS_NEXT_FNTIMES(handle, fsp, ft);
}
-static int shadow_copy2_ntimes(vfs_handle_struct *handle,
- const struct smb_filename *smb_fname,
- struct smb_file_time *ft)
+static int shadow_copy2_readlinkat(vfs_handle_struct *handle,
+ const struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ char *buf,
+ size_t bufsiz)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- struct smb_filename *conv;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ int saved_errno = 0;
+ int ret;
+ struct smb_filename *full_fname = NULL;
+ struct smb_filename *conv = NULL;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
- smb_fname->base_name,
- ×tamp, &stripped)) {
+ full_fname = full_path_from_dirfsp_atname(talloc_tos(),
+ dirfsp,
+ smb_fname);
+ if (full_fname == NULL) {
+ errno = ENOMEM;
return -1;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft);
+
+ if (!shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ full_fname,
+ ×tamp,
+ &stripped)) {
+ TALLOC_FREE(full_fname);
+ return -1;
}
- conv = cp_smb_filename(talloc_tos(), smb_fname);
+
+ if (timestamp == 0) {
+ TALLOC_FREE(full_fname);
+ TALLOC_FREE(stripped);
+ return SMB_VFS_NEXT_READLINKAT(handle,
+ dirfsp,
+ smb_fname,
+ buf,
+ bufsiz);
+ }
+ conv = cp_smb_filename(talloc_tos(), full_fname);
if (conv == NULL) {
+ TALLOC_FREE(full_fname);
+ TALLOC_FREE(stripped);
errno = ENOMEM;
return -1;
}
+ TALLOC_FREE(full_fname);
conv->base_name = shadow_copy2_convert(
conv, handle, stripped, timestamp);
TALLOC_FREE(stripped);
if (conv->base_name == NULL) {
return -1;
}
- ret = SMB_VFS_NEXT_NTIMES(handle, conv, ft);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
-}
-
-static int shadow_copy2_readlink(vfs_handle_struct *handle,
- const char *fname, char *buf, size_t bufsiz)
-{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- char *conv;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
- return -1;
- }
- if (timestamp == 0) {
- return SMB_VFS_NEXT_READLINK(handle, fname, buf, bufsiz);
- }
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
- return -1;
+ ret = SMB_VFS_NEXT_READLINKAT(handle,
+ handle->conn->cwd_fsp,
+ conv,
+ buf,
+ bufsiz);
+ if (ret == -1) {
+ saved_errno = errno;
}
- ret = SMB_VFS_NEXT_READLINK(handle, conv, buf, bufsiz);
- saved_errno = errno;
TALLOC_FREE(conv);
- errno = saved_errno;
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
return ret;
}
-static int shadow_copy2_mknod(vfs_handle_struct *handle,
- const char *fname, mode_t mode, SMB_DEV_T dev)
+static int shadow_copy2_mknodat(vfs_handle_struct *handle,
+ files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ mode_t mode,
+ SMB_DEV_T dev)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- char *conv;
+ time_t timestamp = 0;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
+ smb_fname,
+ ×tamp, NULL)) {
return -1;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_MKNOD(handle, fname, mode, dev);
- }
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
+ if (timestamp != 0) {
+ errno = EROFS;
return -1;
}
- ret = SMB_VFS_NEXT_MKNOD(handle, conv, mode, dev);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+ return SMB_VFS_NEXT_MKNODAT(handle,
+ dirfsp,
+ smb_fname,
+ mode,
+ dev);
}
-static char *shadow_copy2_realpath(vfs_handle_struct *handle,
- const char *fname)
+static struct smb_filename *shadow_copy2_realpath(vfs_handle_struct *handle,
+ TALLOC_CTX *ctx,
+ const struct smb_filename *smb_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;
+ struct smb_filename *result_fname = NULL;
+ struct smb_filename *conv_fname = NULL;
+ int saved_errno = 0;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
+ smb_fname,
+ ×tamp, &stripped)) {
goto done;
}
if (timestamp == 0) {
- return SMB_VFS_NEXT_REALPATH(handle, fname);
+ return SMB_VFS_NEXT_REALPATH(handle, ctx, smb_fname);
}
- tmp = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- if (tmp == NULL) {
+ conv_fname = cp_smb_filename(talloc_tos(), smb_fname);
+ if (conv_fname == NULL) {
goto done;
}
-
- result = SMB_VFS_NEXT_REALPATH(handle, tmp);
- if (result == NULL) {
+ conv_fname->base_name = shadow_copy2_convert(
+ conv_fname, handle, stripped, timestamp);
+ if (conv_fname->base_name == 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);
+ result_fname = SMB_VFS_NEXT_REALPATH(handle, ctx, conv_fname);
done:
- saved_errno = errno;
- TALLOC_FREE(inserted);
- TALLOC_FREE(tmp);
+ if (result_fname == NULL) {
+ saved_errno = errno;
+ }
+ TALLOC_FREE(conv_fname);
TALLOC_FREE(stripped);
- errno = saved_errno;
- return result;
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
+ return result_fname;
}
/**
* otherwise return NULL.
*/
static char *have_snapdir(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
const char *path)
{
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);
+ smb_fname = (struct smb_filename) {
+ .base_name = talloc_asprintf(
+ mem_ctx, "%s/%s", path, priv->config->snapdir),
+ };
if (smb_fname.base_name == NULL) {
return NULL;
}
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!
+ * If the non-snapdirseverywhere mode, we should not search!
*/
if (!config->snapdirseverywhere) {
return config->snapshot_basepath;
return NULL;
}
- snapdir = have_snapdir(handle, path);
+ snapdir = have_snapdir(handle, talloc_tos(), path);
if (snapdir != NULL) {
TALLOC_FREE(path);
return snapdir;
p[0] = '\0';
- snapdir = have_snapdir(handle, path);
+ snapdir = have_snapdir(handle, talloc_tos(), path);
if (snapdir != NULL) {
TALLOC_FREE(path);
return snapdir;
const char *name,
char *gmt, size_t gmt_len)
{
- struct tm timestamp;
+ struct tm timestamp = { .tm_sec = 0, };
time_t timestamp_t;
unsigned long int timestamp_long;
const char *fmt;
struct shadow_copy2_config *config;
+ struct shadow_copy2_private *priv;
+ char *tmpstr = NULL;
+ char *tmp = NULL;
+ bool converted = false;
+ int ret = -1;
- SMB_VFS_HANDLE_GET_DATA(handle, 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;
- ZERO_STRUCT(timestamp);
+ /*
+ * If regex is provided, then we will have to parse the
+ * filename which will contain both the prefix and the time format.
+ * e.g. <prefix><delimiter><time_format>
+ */
+ if (priv->snaps->regex != NULL) {
+ tmpstr = talloc_strdup(talloc_tos(), name);
+ /* point "name" to the time format */
+ name = strstr(name, priv->config->delimiter);
+ if (name == NULL) {
+ goto done;
+ }
+ /* Extract the prefix */
+ tmp = strstr(tmpstr, priv->config->delimiter);
+ if (tmp == NULL) {
+ goto done;
+ }
+ *tmp = '\0';
+
+ /* Parse regex */
+ ret = regexec(priv->snaps->regex, tmpstr, 0, NULL, 0);
+ if (ret) {
+ DBG_DEBUG("shadow_copy2_snapshot_to_gmt: "
+ "no regex match for %s\n", tmpstr);
+ goto done;
+ }
+ }
+
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));
-
+
if (config->use_localtime) {
timestamp.tm_isdst = -1;
timestamp_t = mktime(×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_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;
}
struct shadow_copy_data *shadow_copy2_data,
bool labels)
{
- DIR *p;
+ DIR *p = NULL;
const char *snapdir;
+ struct smb_filename *snapdir_smb_fname = NULL;
+ struct files_struct *dirfsp = NULL;
+ struct files_struct *fspcwd = 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;
+ struct vfs_open_how how = {
+ .flags = O_RDONLY, .mode = 0,
+ };
+ int fd;
+ int ret = -1;
+ NTSTATUS status;
+ int saved_errno = 0;
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);
+ snapdir_smb_fname = synthetic_smb_fname(talloc_tos(),
+ snapdir,
+ NULL,
+ NULL,
+ 0,
+ fsp->fsp_name->flags);
+ if (snapdir_smb_fname == NULL) {
+ errno = ENOMEM;
+ goto done;
+ }
+
+ status = create_internal_dirfsp(handle->conn,
+ snapdir_smb_fname,
+ &dirfsp);
+ if (!NT_STATUS_IS_OK(status)) {
+ DBG_WARNING("create_internal_dir_fsp() failed for '%s'"
+ " - %s\n", snapdir, nt_errstr(status));
+ errno = ENOSYS;
+ goto done;
+ }
+
+ status = vfs_at_fspcwd(talloc_tos(), handle->conn, &fspcwd);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = ENOMEM;
+ goto done;
+ }
+
+#ifdef O_DIRECTORY
+ how.flags |= O_DIRECTORY;
+#endif
+ fd = SMB_VFS_NEXT_OPENAT(handle,
+ fspcwd,
+ snapdir_smb_fname,
+ dirfsp,
+ &how);
+ if (fd == -1) {
+ DBG_WARNING("SMB_VFS_NEXT_OPEN failed for '%s'"
+ " - %s\n", snapdir, strerror(errno));
+ errno = ENOSYS;
+ goto done;
+ }
+ fsp_set_fd(dirfsp, fd);
+
+ /* Now we have the handle, check access here. */
+ status = smbd_check_access_rights_fsp(fspcwd,
+ dirfsp,
+ false,
+ SEC_DIR_LIST);
+ if (!NT_STATUS_IS_OK(status)) {
+ DBG_ERR("user does not have list permission "
+ "on snapdir %s\n",
+ fsp_str_dbg(dirfsp));
+ errno = EACCES;
+ goto done;
+ }
+
+ p = SMB_VFS_NEXT_FDOPENDIR(handle, dirfsp, NULL, 0);
if (!p) {
- DEBUG(2,("shadow_copy2: SMB_VFS_NEXT_OPENDIR() failed for '%s'"
- " - %s\n", snapdir, strerror(errno)));
- talloc_free(tmp_ctx);
+ DBG_NOTICE("shadow_copy2: SMB_VFS_NEXT_FDOPENDIR() failed for '%s'"
+ " - %s\n", snapdir, strerror(errno));
errno = ENOSYS;
- return -1;
+ goto done;
+ }
+
+ if (shadow_copy2_data != NULL) {
+ shadow_copy2_data->num_volumes = 0;
+ shadow_copy2_data->labels = 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);
- while ((d = SMB_VFS_NEXT_READDIR(handle, p, NULL))) {
+ /*
+ * 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, dirfsp, p))) {
char snapshot[GMT_NAME_LEN+1];
SHADOW_COPY_LABEL *tlabels;
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++;
shadow_copy2_data->num_volumes+1);
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,
shadow_copy2_data->labels = tlabels;
}
- SMB_VFS_NEXT_CLOSEDIR(handle,p);
-
shadow_copy2_sort_data(handle, shadow_copy2_data);
+ ret = 0;
- talloc_free(tmp_ctx);
- return 0;
-}
-
-static NTSTATUS shadow_copy2_fget_nt_acl(vfs_handle_struct *handle,
- struct files_struct *fsp,
- uint32 security_info,
- TALLOC_CTX *mem_ctx,
- struct security_descriptor **ppdesc)
-{
- time_t timestamp;
- char *stripped;
- NTSTATUS status;
- char *conv;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle,
- fsp->fsp_name->base_name,
- ×tamp, &stripped)) {
- return map_nt_error_from_unix(errno);
- }
- if (timestamp == 0) {
- return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
- mem_ctx,
- ppdesc);
- }
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
- return map_nt_error_from_unix(errno);
- }
- status = SMB_VFS_NEXT_GET_NT_ACL(handle, conv, security_info,
- mem_ctx, ppdesc);
- TALLOC_FREE(conv);
- return status;
-}
-
-static NTSTATUS shadow_copy2_get_nt_acl(vfs_handle_struct *handle,
- const char *fname,
- uint32 security_info,
- TALLOC_CTX *mem_ctx,
- struct security_descriptor **ppdesc)
-{
- time_t timestamp;
- char *stripped;
- NTSTATUS status;
- char *conv;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
- return map_nt_error_from_unix(errno);
+done:
+ if (ret != 0) {
+ saved_errno = errno;
+ }
+ TALLOC_FREE(fspcwd );
+ if (p != NULL) {
+ SMB_VFS_NEXT_CLOSEDIR(handle, p);
+ p = NULL;
+ if (dirfsp != NULL) {
+ /*
+ * VFS_CLOSEDIR implicitly
+ * closed the associated fd.
+ */
+ fsp_set_fd(dirfsp, -1);
+ }
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_GET_NT_ACL(handle, fname, security_info,
- mem_ctx, ppdesc);
+ if (dirfsp != NULL) {
+ fd_close(dirfsp);
+ file_free(NULL, dirfsp);
}
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
- return map_nt_error_from_unix(errno);
+ TALLOC_FREE(tmp_ctx);
+ if (saved_errno != 0) {
+ errno = saved_errno;
}
- status = SMB_VFS_NEXT_GET_NT_ACL(handle, conv, security_info,
- mem_ctx, ppdesc);
- TALLOC_FREE(conv);
- return status;
+ return ret;
}
-static int shadow_copy2_mkdir(vfs_handle_struct *handle,
- const char *fname, mode_t mode)
+static int shadow_copy2_mkdirat(vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ mode_t mode)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- char *conv;
+ struct smb_filename *full_fname = NULL;
+ time_t timestamp = 0;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ full_fname = full_path_from_dirfsp_atname(talloc_tos(),
+ dirfsp,
+ smb_fname);
+ if (full_fname == NULL) {
+ errno = ENOMEM;
return -1;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_MKDIR(handle, fname, mode);
+
+ if (!shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ full_fname,
+ ×tamp,
+ NULL)) {
+ TALLOC_FREE(full_fname);
+ return -1;
}
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
+ TALLOC_FREE(full_fname);
+ if (timestamp != 0) {
+ errno = EROFS;
return -1;
}
- ret = SMB_VFS_NEXT_MKDIR(handle, conv, mode);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+ return SMB_VFS_NEXT_MKDIRAT(handle,
+ dirfsp,
+ smb_fname,
+ mode);
}
-static int shadow_copy2_rmdir(vfs_handle_struct *handle, const char *fname)
+static int shadow_copy2_fchflags(vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ unsigned int flags)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- char *conv;
+ time_t timestamp = 0;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
+ if (!shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ fsp->fsp_name,
+ ×tamp,
+ NULL)) {
return -1;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_RMDIR(handle, fname);
- }
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
+ if (timestamp != 0) {
+ errno = EROFS;
return -1;
}
- ret = SMB_VFS_NEXT_RMDIR(handle, conv);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+ return SMB_VFS_NEXT_FCHFLAGS(handle, fsp, flags);
}
-static int shadow_copy2_chflags(vfs_handle_struct *handle, const char *fname,
- unsigned int flags)
+static int shadow_copy2_fsetxattr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ const char *aname, const void *value,
+ size_t size, int flags)
{
- 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;
+ const struct smb_filename *smb_fname = NULL;
+
+ smb_fname = fsp->fsp_name;
+ if (!shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ NULL)) {
return -1;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_CHFLAGS(handle, fname, flags);
- }
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
+ if (timestamp != 0) {
+ errno = EROFS;
return -1;
}
- ret = SMB_VFS_NEXT_CHFLAGS(handle, conv, flags);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+ return SMB_VFS_NEXT_FSETXATTR(handle, fsp,
+ aname, value, size, flags);
}
-static ssize_t shadow_copy2_getxattr(vfs_handle_struct *handle,
- const char *fname, const char *aname,
- void *value, size_t size)
+static NTSTATUS shadow_copy2_create_dfs_pathat(struct vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ const struct referral *reflist,
+ size_t referral_count)
{
- time_t timestamp;
- char *stripped;
- ssize_t ret;
- int saved_errno;
- char *conv;
+ time_t timestamp = 0;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
- return -1;
- }
- if (timestamp == 0) {
- return SMB_VFS_NEXT_GETXATTR(handle, fname, aname, value,
- size);
+ if (!shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ NULL)) {
+ return NT_STATUS_NO_MEMORY;
}
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
- return -1;
+ if (timestamp != 0) {
+ return NT_STATUS_MEDIA_WRITE_PROTECTED;
}
- ret = SMB_VFS_NEXT_GETXATTR(handle, conv, aname, value, size);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+ return SMB_VFS_NEXT_CREATE_DFS_PATHAT(handle,
+ dirfsp,
+ smb_fname,
+ reflist,
+ referral_count);
}
-static ssize_t shadow_copy2_listxattr(struct vfs_handle_struct *handle,
- const char *fname,
- char *list, size_t size)
+static NTSTATUS shadow_copy2_read_dfs_pathat(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct files_struct *dirfsp,
+ struct smb_filename *smb_fname,
+ struct referral **ppreflist,
+ size_t *preferral_count)
{
- time_t timestamp;
- char *stripped;
- ssize_t ret;
- int saved_errno;
- char *conv;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ struct smb_filename *full_fname = NULL;
+ struct smb_filename *conv = NULL;
+ NTSTATUS status;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
- return -1;
+ full_fname = full_path_from_dirfsp_atname(talloc_tos(),
+ dirfsp,
+ smb_fname);
+ if (full_fname == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!shadow_copy2_strip_snapshot(mem_ctx,
+ handle,
+ full_fname,
+ ×tamp,
+ &stripped)) {
+ TALLOC_FREE(full_fname);
+ return NT_STATUS_NO_MEMORY;
}
if (timestamp == 0) {
- return SMB_VFS_NEXT_LISTXATTR(handle, fname, list, size);
+ TALLOC_FREE(full_fname);
+ TALLOC_FREE(stripped);
+ return SMB_VFS_NEXT_READ_DFS_PATHAT(handle,
+ mem_ctx,
+ dirfsp,
+ smb_fname,
+ ppreflist,
+ preferral_count);
}
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
+
+ conv = cp_smb_filename(mem_ctx, full_fname);
if (conv == NULL) {
- return -1;
+ TALLOC_FREE(full_fname);
+ TALLOC_FREE(stripped);
+ return NT_STATUS_NO_MEMORY;
+ }
+ TALLOC_FREE(full_fname);
+ conv->base_name = shadow_copy2_convert(conv,
+ handle,
+ stripped,
+ timestamp);
+ TALLOC_FREE(stripped);
+ if (conv->base_name == NULL) {
+ TALLOC_FREE(conv);
+ return NT_STATUS_NO_MEMORY;
}
- ret = SMB_VFS_NEXT_LISTXATTR(handle, conv, list, size);
- saved_errno = errno;
+
+ status = SMB_VFS_NEXT_READ_DFS_PATHAT(handle,
+ mem_ctx,
+ handle->conn->cwd_fsp,
+ conv,
+ ppreflist,
+ preferral_count);
+
+ if (NT_STATUS_IS_OK(status)) {
+ /* Return any stat(2) info. */
+ smb_fname->st = conv->st;
+ }
+
TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+ return status;
}
-static int shadow_copy2_removexattr(vfs_handle_struct *handle,
- const char *fname, const char *aname)
+static const char *shadow_copy2_connectpath(
+ struct vfs_handle_struct *handle,
+ const struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname_in)
{
- time_t timestamp;
- char *stripped;
- int ret, saved_errno;
- char *conv;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ char *tmp = NULL;
+ const char *fname = smb_fname_in->base_name;
+ const struct smb_filename *full = NULL;
+ struct smb_filename smb_fname = {0};
+ struct smb_filename *result_fname = NULL;
+ char *result = NULL;
+ char *parent_dir = NULL;
+ int saved_errno = 0;
+ size_t rootpath_len = 0;
+ struct shadow_copy2_private *priv = NULL;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+ return NULL);
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
+ 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;
+ }
+
+ full = full_path_from_dirfsp_atname(
+ talloc_tos(), dirfsp, smb_fname_in);
+ if (full == NULL) {
+ return NULL;
+ }
+
+ if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, full,
×tamp, &stripped)) {
- return -1;
+ goto done;
}
if (timestamp == 0) {
- return SMB_VFS_NEXT_REMOVEXATTR(handle, fname, aname);
+ return SMB_VFS_NEXT_CONNECTPATH(handle, dirfsp, smb_fname_in);
}
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
+
+ tmp = shadow_copy2_do_convert(talloc_tos(), handle, stripped, timestamp,
+ &rootpath_len);
+ if (tmp == NULL) {
+ if (errno != ENOENT) {
+ goto done;
+ }
+
+ /*
+ * If the converted path does not exist, and converting
+ * the parent yields something that does exist, then
+ * this path refers to something that has not been
+ * created yet, relative to the parent path.
+ * The snapshot finding is relative to the parent.
+ * (usually snapshots are read/only but this is not
+ * necessarily true).
+ * This code also covers getting a wildcard in the
+ * last component, because this function is called
+ * prior to sanitizing the path, and in SMB1 we may
+ * get wildcards in path names.
+ */
+ if (!parent_dirname(talloc_tos(), stripped, &parent_dir,
+ NULL)) {
+ errno = ENOMEM;
+ goto done;
+ }
+
+ tmp = shadow_copy2_do_convert(talloc_tos(), handle, parent_dir,
+ timestamp, &rootpath_len);
+ if (tmp == NULL) {
+ goto done;
+ }
+ }
+
+ DBG_DEBUG("converted path is [%s] root path is [%.*s]\n", tmp,
+ (int)rootpath_len, tmp);
+
+ tmp[rootpath_len] = '\0';
+ smb_fname = (struct smb_filename) { .base_name = tmp };
+
+ result_fname = SMB_VFS_NEXT_REALPATH(handle, priv, &smb_fname);
+ if (result_fname == NULL) {
+ goto done;
+ }
+
+ /*
+ * SMB_VFS_NEXT_REALPATH returns a talloc'ed string.
+ * Don't leak memory.
+ */
+ TALLOC_FREE(priv->shadow_realpath);
+ priv->shadow_realpath = result_fname;
+ result = priv->shadow_realpath->base_name;
+
+ DBG_DEBUG("connect path is [%s]\n", result);
+
+done:
+ if (result == NULL) {
+ saved_errno = errno;
+ }
+ TALLOC_FREE(tmp);
TALLOC_FREE(stripped);
- if (conv == NULL) {
- return -1;
+ TALLOC_FREE(parent_dir);
+ if (saved_errno != 0) {
+ errno = saved_errno;
}
- ret = SMB_VFS_NEXT_REMOVEXATTR(handle, conv, aname);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+ return result;
}
-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 NTSTATUS shadow_copy2_parent_pathname(vfs_handle_struct *handle,
+ TALLOC_CTX *ctx,
+ const struct smb_filename *smb_fname_in,
+ struct smb_filename **parent_dir_out,
+ struct smb_filename **atname_out)
{
- time_t timestamp;
- char *stripped;
- ssize_t ret;
- int saved_errno;
- char *conv;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ char *converted_name = NULL;
+ struct smb_filename *smb_fname = NULL;
+ struct smb_filename *parent = NULL;
+ struct smb_filename *atname = NULL;
+ struct shadow_copy2_private *priv = NULL;
+ bool ok = false;
+ bool is_converted = false;
+ NTSTATUS status = NT_STATUS_OK;
+ TALLOC_CTX *frame = NULL;
+
+ SMB_VFS_HANDLE_GET_DATA(handle,
+ priv,
+ struct shadow_copy2_private,
+ return NT_STATUS_INTERNAL_ERROR);
+
+ frame = talloc_stackframe();
+
+ smb_fname = cp_smb_filename(frame, smb_fname_in);
+ if (smb_fname == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
+ }
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
- return -1;
+ /* First, call the default PARENT_PATHNAME. */
+ status = SMB_VFS_NEXT_PARENT_PATHNAME(handle,
+ frame,
+ smb_fname,
+ &parent,
+ &atname);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_SETXATTR(handle, fname, aname, value, size,
- flags);
+
+ if (parent->twrp == 0) {
+ /*
+ * Parent is not a snapshot path, return
+ * the regular result.
+ */
+ status = NT_STATUS_OK;
+ goto out;
+ }
+
+ /* See if we can find a snapshot for the parent. */
+ ok = shadow_copy2_strip_snapshot_converted(frame,
+ handle,
+ parent,
+ ×tamp,
+ &stripped,
+ &is_converted);
+ if (!ok) {
+ status = map_nt_error_from_unix(errno);
+ goto fail;
}
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
- return -1;
+
+ if (is_converted) {
+ /*
+ * Already found snapshot for parent so wipe
+ * out the twrp.
+ */
+ parent->twrp = 0;
+ goto out;
}
- ret = SMB_VFS_NEXT_SETXATTR(handle, conv, aname, value, size, flags);
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
- return ret;
+
+ converted_name = shadow_copy2_convert(frame,
+ handle,
+ stripped,
+ timestamp);
+
+ if (converted_name == NULL) {
+ /*
+ * Can't find snapshot for parent so wipe
+ * out the twrp.
+ */
+ parent->twrp = 0;
+ }
+
+ out:
+
+ *parent_dir_out = talloc_move(ctx, &parent);
+ if (atname_out != NULL) {
+ *atname_out = talloc_move(*parent_dir_out, &atname);
+ }
+
+ fail:
+
+ TALLOC_FREE(frame);
+ return status;
}
-static int shadow_copy2_chmod_acl(vfs_handle_struct *handle,
- const char *fname, mode_t mode)
+static uint64_t shadow_copy2_disk_free(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ uint64_t *bsize,
+ uint64_t *dfree,
+ uint64_t *dsize)
{
- time_t timestamp;
- char *stripped;
- ssize_t ret;
- int saved_errno;
- char *conv;
-
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, fname,
- ×tamp, &stripped)) {
- return -1;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ int saved_errno = 0;
+ char *conv = NULL;
+ struct smb_filename *conv_smb_fname = NULL;
+ uint64_t ret = (uint64_t)-1;
+
+ if (!shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ &stripped)) {
+ return (uint64_t)-1;
}
if (timestamp == 0) {
- return SMB_VFS_NEXT_CHMOD_ACL(handle, fname, mode);
+ return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname,
+ bsize, dfree, dsize);
}
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
TALLOC_FREE(stripped);
if (conv == NULL) {
- return -1;
+ return (uint64_t)-1;
+ }
+ conv_smb_fname = synthetic_smb_fname(talloc_tos(),
+ conv,
+ NULL,
+ NULL,
+ 0,
+ smb_fname->flags);
+ if (conv_smb_fname == NULL) {
+ TALLOC_FREE(conv);
+ return (uint64_t)-1;
+ }
+ ret = SMB_VFS_NEXT_DISK_FREE(handle, conv_smb_fname,
+ bsize, dfree, dsize);
+ if (ret == (uint64_t)-1) {
+ saved_errno = errno;
}
- ret = SMB_VFS_NEXT_CHMOD_ACL(handle, conv, mode);
- saved_errno = errno;
TALLOC_FREE(conv);
- errno = saved_errno;
+ TALLOC_FREE(conv_smb_fname);
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
return ret;
}
-static int shadow_copy2_get_real_filename(struct vfs_handle_struct *handle,
- const char *path,
- const char *name,
- TALLOC_CTX *mem_ctx,
- char **found_name)
+static int shadow_copy2_get_quota(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname,
+ enum SMB_QUOTA_TYPE qtype,
+ unid_t id,
+ SMB_DISK_QUOTA *dq)
{
- time_t timestamp;
- char *stripped;
- ssize_t ret;
- int saved_errno;
+ time_t timestamp = 0;
+ char *stripped = NULL;
+ int ret;
+ int saved_errno = 0;
char *conv;
+ struct smb_filename *conv_smb_fname = NULL;
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, path,
- ×tamp, &stripped)) {
+ if (!shadow_copy2_strip_snapshot(talloc_tos(),
+ handle,
+ smb_fname,
+ ×tamp,
+ &stripped)) {
return -1;
}
if (timestamp == 0) {
- 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;
+ return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname, qtype, id, dq);
}
+
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
TALLOC_FREE(stripped);
if (conv == NULL) {
return -1;
}
- ret = SMB_VFS_NEXT_GET_REAL_FILENAME(handle, conv, name,
- mem_ctx, found_name);
- saved_errno = errno;
+ conv_smb_fname = synthetic_smb_fname(talloc_tos(),
+ conv,
+ NULL,
+ NULL,
+ 0,
+ smb_fname->flags);
+ if (conv_smb_fname == NULL) {
+ TALLOC_FREE(conv);
+ return -1;
+ }
+ ret = SMB_VFS_NEXT_GET_QUOTA(handle, conv_smb_fname, qtype, id, dq);
+
+ if (ret == -1) {
+ saved_errno = errno;
+ }
TALLOC_FREE(conv);
- errno = saved_errno;
+ TALLOC_FREE(conv_smb_fname);
+ if (saved_errno != 0) {
+ errno = saved_errno;
+ }
+
return ret;
}
-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)
+static ssize_t shadow_copy2_pwrite(vfs_handle_struct *handle,
+ files_struct *fsp,
+ const void *data,
+ size_t n,
+ off_t offset)
{
- time_t timestamp;
- char *stripped;
+ ssize_t nwritten;
+
+ nwritten = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
+ if (nwritten == -1) {
+ if (errno == EBADF && fsp->fsp_flags.can_write) {
+ errno = EROFS;
+ }
+ }
+
+ return nwritten;
+}
+
+struct shadow_copy2_pwrite_state {
+ vfs_handle_struct *handle;
+ files_struct *fsp;
ssize_t ret;
- int saved_errno;
- char *conv;
+ struct vfs_aio_state vfs_aio_state;
+};
- if (!shadow_copy2_strip_snapshot(talloc_tos(), handle, path,
- ×tamp, &stripped)) {
- return -1;
+static void shadow_copy2_pwrite_done(struct tevent_req *subreq);
+
+static struct tevent_req *shadow_copy2_pwrite_send(
+ struct vfs_handle_struct *handle, TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev, struct files_struct *fsp,
+ const void *data, size_t n, off_t offset)
+{
+ struct tevent_req *req = NULL, *subreq = NULL;
+ struct shadow_copy2_pwrite_state *state = NULL;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct shadow_copy2_pwrite_state);
+ if (req == NULL) {
+ return NULL;
}
- if (timestamp == 0) {
- return SMB_VFS_NEXT_DISK_FREE(handle, path, small_query,
- bsize, dfree, dsize);
+ state->handle = handle;
+ state->fsp = fsp;
+
+ subreq = SMB_VFS_NEXT_PWRITE_SEND(state,
+ ev,
+ handle,
+ fsp,
+ data,
+ n,
+ offset);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
}
+ tevent_req_set_callback(subreq, shadow_copy2_pwrite_done, req);
- conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
- TALLOC_FREE(stripped);
- if (conv == NULL) {
- return -1;
+ return req;
+}
+
+static void shadow_copy2_pwrite_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct shadow_copy2_pwrite_state *state = tevent_req_data(
+ req, struct shadow_copy2_pwrite_state);
+
+ state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
+ TALLOC_FREE(subreq);
+ if (state->ret == -1) {
+ tevent_req_error(req, state->vfs_aio_state.error);
+ return;
}
- ret = SMB_VFS_NEXT_DISK_FREE(handle, conv, small_query, bsize, dfree,
- dsize);
+ tevent_req_done(req);
+}
- saved_errno = errno;
- TALLOC_FREE(conv);
- errno = saved_errno;
+static ssize_t shadow_copy2_pwrite_recv(struct tevent_req *req,
+ struct vfs_aio_state *vfs_aio_state)
+{
+ struct shadow_copy2_pwrite_state *state = tevent_req_data(
+ req, struct shadow_copy2_pwrite_state);
+
+ if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
+ if ((vfs_aio_state->error == EBADF) &&
+ state->fsp->fsp_flags.can_write)
+ {
+ vfs_aio_state->error = EROFS;
+ errno = EROFS;
+ }
+ return -1;
+ }
- return ret;
+ *vfs_aio_state = state->vfs_aio_state;
+ return state->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;
+ 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));
+ DBG_DEBUG("cnum[%" PRIu32 "], connectpath[%s]\n",
+ handle->conn->cnum,
+ handle->conn->connectpath);
ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
if (ret < 0) {
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;
}
+ /* config->gmt_format must not contain a path separator. */
+ if (strchr(config->gmt_format, '/') != NULL) {
+ DEBUG(0, ("shadow:format %s must not contain a /"
+ "character. Unable to initialize module.\n",
+ config->gmt_format));
+ errno = EINVAL;
+ return -1;
+ }
+
config->use_sscanf = lp_parm_bool(SNUM(handle->conn),
"shadow", "sscanf", false);
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);
"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));
+ DBG_WARNING("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) {
- 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;
}
}
if (mount_point != NULL) {
config->mount_point = talloc_strdup(config, mount_point);
if (config->mount_point == NULL) {
- DEBUG(0, (__location__ " talloc_strdup() failed\n"));
+ DBG_ERR("talloc_strdup() failed\n");
return -1;
}
} else {
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;
}
}
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));
+ DBG_WARNING("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);
"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) {
- DEBUG(1, (__location__ " Warning: 'basedir' is incompatible "
- "with 'snapdirseverywhere'. Disabling basedir.\n"));
- TALLOC_FREE(config->basedir);
+ if (config->snapdirseverywhere && basedir != NULL) {
+ DBG_WARNING("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 (config->crossmountpoints && config->basedir != NULL) {
- DEBUG(1, (__location__ " Warning: 'basedir' is incompatible "
- "with 'crossmountpoints'. Disabling basedir.\n"));
- TALLOC_FREE(config->basedir);
+ 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 (config->basedir == NULL) {
- config->basedir = config->mount_point;
+ if (basedir == NULL) {
+ basedir = config->mount_point;
}
- if (strlen(config->basedir) != strlen(handle->conn->connectpath)) {
+ 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;
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"));
+ if (config->snapdirseverywhere) {
+ DBG_WARNING("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"));
+ if (config->crossmountpoints) {
+ DBG_WARNING("Warning: 'crossmountpoints' is not "
+ "supported with an absolute snapdir. "
+ "Disabling it.\n");
config->crossmountpoints = false;
}
}
}
+ 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;
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,
- .rename_fn = shadow_copy2_rename,
- .link_fn = shadow_copy2_link,
- .symlink_fn = shadow_copy2_symlink,
+ .get_quota_fn = shadow_copy2_get_quota,
+ .create_dfs_pathat_fn = shadow_copy2_create_dfs_pathat,
+ .read_dfs_pathat_fn = shadow_copy2_read_dfs_pathat,
+ .renameat_fn = shadow_copy2_renameat,
+ .linkat_fn = shadow_copy2_linkat,
+ .symlinkat_fn = shadow_copy2_symlinkat,
.stat_fn = shadow_copy2_stat,
.lstat_fn = shadow_copy2_lstat,
.fstat_fn = shadow_copy2_fstat,
- .open_fn = shadow_copy2_open,
- .unlink_fn = shadow_copy2_unlink,
- .chmod_fn = shadow_copy2_chmod,
- .chown_fn = shadow_copy2_chown,
+ .fstatat_fn = shadow_copy2_fstatat,
+ .openat_fn = shadow_copy2_openat,
+ .unlinkat_fn = shadow_copy2_unlinkat,
+ .fchmod_fn = shadow_copy2_fchmod,
.chdir_fn = shadow_copy2_chdir,
- .ntimes_fn = shadow_copy2_ntimes,
- .readlink_fn = shadow_copy2_readlink,
- .mknod_fn = shadow_copy2_mknod,
+ .fntimes_fn = shadow_copy2_fntimes,
+ .readlinkat_fn = shadow_copy2_readlinkat,
+ .mknodat_fn = shadow_copy2_mknodat,
.realpath_fn = shadow_copy2_realpath,
- .get_nt_acl_fn = shadow_copy2_get_nt_acl,
- .fget_nt_acl_fn = shadow_copy2_fget_nt_acl,
.get_shadow_copy_data_fn = shadow_copy2_get_shadow_copy_data,
- .mkdir_fn = shadow_copy2_mkdir,
- .rmdir_fn = shadow_copy2_rmdir,
- .getxattr_fn = shadow_copy2_getxattr,
- .listxattr_fn = shadow_copy2_listxattr,
- .removexattr_fn = shadow_copy2_removexattr,
- .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,
+ .mkdirat_fn = shadow_copy2_mkdirat,
+ .fsetxattr_fn = shadow_copy2_fsetxattr,
+ .fchflags_fn = shadow_copy2_fchflags,
+ .pwrite_fn = shadow_copy2_pwrite,
+ .pwrite_send_fn = shadow_copy2_pwrite_send,
+ .pwrite_recv_fn = shadow_copy2_pwrite_recv,
+ .connectpath_fn = shadow_copy2_connectpath,
+ .parent_pathname_fn = shadow_copy2_parent_pathname,
};
-NTSTATUS vfs_shadow_copy2_init(void);
-NTSTATUS vfs_shadow_copy2_init(void)
+static_decl_vfs;
+NTSTATUS vfs_shadow_copy2_init(TALLOC_CTX *ctx)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
"shadow_copy2", &vfs_shadow_copy2_fns);
git.samba.org / samba.git / blobdiff