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-rw-r--r--source3/modules/vfs_shadow_copy2.c173
1 files changed, 145 insertions, 28 deletions
diff --git a/source3/modules/vfs_shadow_copy2.c b/source3/modules/vfs_shadow_copy2.c
index 70d5174b2f..d5b16536c3 100644
--- a/source3/modules/vfs_shadow_copy2.c
+++ b/source3/modules/vfs_shadow_copy2.c
@@ -107,6 +107,18 @@
#include <ccan/hash/hash.h>
#include "util_tdb.h"
+struct shadow_copy2_config {
+ char *gmt_format;
+ bool use_sscanf;
+ bool use_localtime;
+ char *snapdir;
+ bool snapdirseverywhere;
+ bool crossmountpoints;
+ bool fixinodes;
+ char *sort_order;
+ bool snapdir_absolute;
+};
+
static bool shadow_copy2_find_slashes(TALLOC_CTX *mem_ctx, const char *str,
size_t **poffsets,
unsigned *pnum_offsets)
@@ -150,23 +162,25 @@ static char *shadow_copy2_insert_string(TALLOC_CTX *mem_ctx,
struct vfs_handle_struct *handle,
time_t snapshot)
{
- const char *fmt;
struct tm snap_tm;
fstring snaptime_string;
size_t snaptime_len;
+ struct shadow_copy2_config *config;
- fmt = lp_parm_const_string(SNUM(handle->conn), "shadow",
- "format", GMT_FORMAT);
+ SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ return NULL);
- if (lp_parm_bool(SNUM(handle->conn), "shadow", "sscanf", false)) {
- snaptime_len = snprintf(snaptime_string, sizeof(snaptime_string), fmt,
- (unsigned long)snapshot);
+ if (config->use_sscanf) {
+ snaptime_len = snprintf(snaptime_string,
+ sizeof(snaptime_string),
+ config->gmt_format,
+ (unsigned long)snapshot);
if (snaptime_len <= 0) {
DEBUG(10, ("snprintf failed\n"));
return NULL;
}
} else {
- if (lp_parm_bool(SNUM(handle->conn), "shadow", "localtime", false)) {
+ if (config->use_localtime) {
if (localtime_r(&snapshot, &snap_tm) == 0) {
DEBUG(10, ("gmtime_r failed\n"));
return NULL;
@@ -177,18 +191,17 @@ static char *shadow_copy2_insert_string(TALLOC_CTX *mem_ctx,
return NULL;
}
}
- snaptime_len = strftime(snaptime_string, sizeof(snaptime_string), fmt,
- &snap_tm);
+ snaptime_len = strftime(snaptime_string,
+ sizeof(snaptime_string),
+ config->gmt_format,
+ &snap_tm);
if (snaptime_len == 0) {
DEBUG(10, ("strftime failed\n"));
return NULL;
}
}
return talloc_asprintf(mem_ctx, "/%s/%s",
- lp_parm_const_string(
- SNUM(handle->conn), "shadow", "snapdir",
- ".snapshots"),
- snaptime_string);
+ config->snapdir, snaptime_string);
}
/**
@@ -208,6 +221,10 @@ static bool shadow_copy2_strip_snapshot(TALLOC_CTX *mem_ctx,
char *q;
char *stripped;
size_t rest_len, dst_len;
+ struct shadow_copy2_config *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ return false);
p = strstr_m(name, "@GMT-");
if (p == NULL) {
@@ -244,8 +261,7 @@ static bool shadow_copy2_strip_snapshot(TALLOC_CTX *mem_ctx,
rest_len = strlen(q);
dst_len = (p-name) + rest_len;
- if (lp_parm_bool(SNUM(handle->conn), "shadow", "snapdirseverywhere",
- false)) {
+ if (config->snapdirseverywhere) {
char *insert;
bool have_insert;
insert = shadow_copy2_insert_string(talloc_tos(), handle,
@@ -334,6 +350,10 @@ static char *shadow_copy2_convert(TALLOC_CTX *mem_ctx,
size_t insertlen;
int i, saved_errno;
size_t min_offset;
+ struct shadow_copy2_config *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ return NULL);
path = talloc_asprintf(mem_ctx, "%s/%s", handle->conn->connectpath,
name);
@@ -376,8 +396,7 @@ static char *shadow_copy2_convert(TALLOC_CTX *mem_ctx,
min_offset = 0;
- if (!lp_parm_bool(SNUM(handle->conn), "shadow", "crossmountpoints",
- false)) {
+ if (!config->crossmountpoints) {
char *mount_point;
mount_point = shadow_copy2_find_mount_point(talloc_tos(),
@@ -461,7 +480,12 @@ fail:
static void convert_sbuf(vfs_handle_struct *handle, const char *fname,
SMB_STRUCT_STAT *sbuf)
{
- if (lp_parm_bool(SNUM(handle->conn), "shadow", "fixinodes", False)) {
+ struct shadow_copy2_config *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ return);
+
+ if (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
@@ -984,12 +1008,14 @@ static char *have_snapdir(struct vfs_handle_struct *handle,
{
struct smb_filename smb_fname;
int ret;
+ struct shadow_copy2_config *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ return NULL);
ZERO_STRUCT(smb_fname);
- smb_fname.base_name = talloc_asprintf(
- talloc_tos(), "%s/%s", path,
- lp_parm_const_string(SNUM(handle->conn), "shadow", "snapdir",
- ".snapshots"));
+ smb_fname.base_name = talloc_asprintf(talloc_tos(), "%s/%s",
+ path, config->snapdir);
if (smb_fname.base_name == NULL) {
return NULL;
}
@@ -1012,6 +1038,10 @@ static char *shadow_copy2_find_snapdir(TALLOC_CTX *mem_ctx,
{
char *path, *p;
char *snapdir;
+ struct shadow_copy2_config *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ return NULL);
path = talloc_asprintf(mem_ctx, "%s/%s",
handle->conn->connectpath,
@@ -1048,12 +1078,15 @@ static bool shadow_copy2_snapshot_to_gmt(vfs_handle_struct *handle,
time_t timestamp_t;
unsigned long int timestamp_long;
const char *fmt;
+ struct shadow_copy2_config *config;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ return NULL);
- fmt = lp_parm_const_string(SNUM(handle->conn), "shadow",
- "format", GMT_FORMAT);
+ fmt = config->gmt_format;
ZERO_STRUCT(timestamp);
- if (lp_parm_bool(SNUM(handle->conn), "shadow", "sscanf", false)) {
+ if (config->use_sscanf) {
if (sscanf(name, fmt, &timestamp_long) != 1) {
DEBUG(10, ("shadow_copy2_snapshot_to_gmt: "
"no sscanf match %s: %s\n",
@@ -1072,7 +1105,7 @@ static bool shadow_copy2_snapshot_to_gmt(vfs_handle_struct *handle,
DEBUG(10, ("shadow_copy2_snapshot_to_gmt: match %s: %s\n",
fmt, name));
- if (lp_parm_bool(SNUM(handle->conn), "shadow", "localtime", false)) {
+ if (config->use_localtime) {
timestamp.tm_isdst = -1;
timestamp_t = mktime(&timestamp);
gmtime_r(&timestamp_t, &timestamp);
@@ -1101,9 +1134,12 @@ static void shadow_copy2_sort_data(vfs_handle_struct *handle,
{
int (*cmpfunc)(const void *, const void *);
const char *sort;
+ struct shadow_copy2_config *config;
- sort = lp_parm_const_string(SNUM(handle->conn), "shadow",
- "sort", "desc");
+ SMB_VFS_HANDLE_GET_DATA(handle, config, struct shadow_copy2_config,
+ return);
+
+ sort = config->sort_order;
if (sort == NULL) {
return;
}
@@ -1536,8 +1572,89 @@ static int shadow_copy2_get_real_filename(struct vfs_handle_struct *handle,
return ret;
}
+static int shadow_copy2_connect(struct vfs_handle_struct *handle,
+ const char *service, const char *user)
+{
+ struct shadow_copy2_config *config;
+ int ret;
+ const char *snapdir;
+ const char *gmt_format;
+ const char *sort_order;
+
+ DEBUG(10, (__location__ ": cnum[%u], connectpath[%s]\n",
+ (unsigned)handle->conn->cnum,
+ handle->conn->connectpath));
+
+ ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
+ if (ret < 0) {
+ return ret;
+ }
+
+ config = talloc_zero(handle->conn, struct shadow_copy2_config);
+ if (config == NULL) {
+ DEBUG(0, ("talloc_zero() failed\n"));
+ errno = ENOMEM;
+ return -1;
+ }
+
+ gmt_format = lp_parm_const_string(SNUM(handle->conn),
+ "shadow", "format",
+ GMT_FORMAT);
+ config->gmt_format = talloc_strdup(config, gmt_format);
+ if (config->gmt_format == NULL) {
+ DEBUG(0, ("talloc_strdup() failed\n"));
+ errno = ENOMEM;
+ return -1;
+ }
+
+ config->use_sscanf = lp_parm_bool(SNUM(handle->conn),
+ "shadow", "sscanf", false);
+
+ config->use_localtime = lp_parm_bool(SNUM(handle->conn),
+ "shadow", "localtime",
+ false);
+
+ snapdir = lp_parm_const_string(SNUM(handle->conn),
+ "shadow", "snapdir",
+ ".snapshots");
+ config->snapdir = talloc_strdup(config, snapdir);
+ if (config->snapdir == NULL) {
+ DEBUG(0, ("talloc_strdup() failed\n"));
+ errno = ENOMEM;
+ return -1;
+ }
+
+ config->snapdirseverywhere = lp_parm_bool(SNUM(handle->conn),
+ "shadow",
+ "snapdirseverywhere",
+ false);
+
+ config->crossmountpoints = lp_parm_bool(SNUM(handle->conn),
+ "shadow", "crossmountpoints",
+ false);
+
+ config->fixinodes = lp_parm_bool(SNUM(handle->conn),
+ "shadow", "fixinodes",
+ false);
+
+ sort_order = lp_parm_const_string(SNUM(handle->conn),
+ "shadow", "sort", "desc");
+ config->sort_order = talloc_strdup(config, sort_order);
+ if (config->sort_order == NULL) {
+ DEBUG(0, ("talloc_strdup() failed\n"));
+ errno = ENOMEM;
+ return -1;
+ }
+
+ SMB_VFS_HANDLE_SET_DATA(handle, config,
+ NULL, struct shadow_copy2_config,
+ return -1);
+
+ return 0;
+}
static struct vfs_fn_pointers vfs_shadow_copy2_fns = {
+ .connect_fn = shadow_copy2_connect,
.opendir_fn = shadow_copy2_opendir,
.rename_fn = shadow_copy2_rename,
.link_fn = shadow_copy2_link,
generated by cgit (git 2.34.1) at 2024-11-02 00:47:42 +0000