* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
+#include "smbd/smbd.h"
+#include "system/filesys.h"
#include "../libcli/security/security.h"
#include "../librpc/gen_ndr/ndr_security.h"
uint32_t security_info,
struct security_descriptor **ppdesc)
{
- DATA_BLOB blob;
+ DATA_BLOB blob = data_blob_null;
NTSTATUS status;
uint16_t hash_type = XATTR_SD_HASH_TYPE_NONE;
uint8_t hash[XATTR_SD_HASH_SIZE];
return map_nt_error_from_unix(errno);
}
}
- is_directory = S_ISDIR(sbuf.st_ex_mode);
+ is_directory = S_ISDIR(psbuf->st_ex_mode);
if (ignore_file_system_acl) {
TALLOC_FREE(pdesc_next);
psd->group_sid = NULL;
}
if (!(security_info & SECINFO_DACL)) {
+ psd->type &= ~SEC_DESC_DACL_PRESENT;
psd->dacl = NULL;
}
if (!(security_info & SECINFO_SACL)) {
+ psd->type &= ~SEC_DESC_SACL_PRESENT;
psd->sacl = NULL;
}
TALLOC_CTX *ctx = talloc_tos();
NTSTATUS status = NT_STATUS_OK;
struct security_descriptor *psd = NULL;
+ struct dom_sid *owner_sid = NULL;
+ struct dom_sid *group_sid = NULL;
+ uint32_t security_info_sent = (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL);
+ bool inherit_owner = lp_inherit_owner(SNUM(handle->conn));
+ bool inheritable_components = sd_has_inheritable_components(parent_desc,
+ is_directory);
size_t size;
- if (!sd_has_inheritable_components(parent_desc, is_directory)) {
+ if (!inheritable_components && !inherit_owner) {
+ /* Nothing to inherit and not setting owner. */
return NT_STATUS_OK;
}
NDR_PRINT_DEBUG(security_descriptor, parent_desc);
}
+ /* Inherit from parent descriptor if "inherit owner" set. */
+ if (inherit_owner) {
+ owner_sid = parent_desc->owner_sid;
+ group_sid = parent_desc->group_sid;
+ }
+
+ if (owner_sid == NULL) {
+ owner_sid = &handle->conn->session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
+ }
+ if (group_sid == NULL) {
+ group_sid = &handle->conn->session_info->security_token->sids[PRIMARY_GROUP_SID_INDEX];
+ }
+
status = se_create_child_secdesc(ctx,
&psd,
&size,
parent_desc,
- &handle->conn->server_info->security_token->sids[PRIMARY_USER_SID_INDEX],
- &handle->conn->server_info->security_token->sids[PRIMARY_GROUP_SID_INDEX],
+ owner_sid,
+ group_sid,
is_directory);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
+ /* If inheritable_components == false,
+ se_create_child_secdesc()
+ creates a security desriptor with a NULL dacl
+ entry, but with SEC_DESC_DACL_PRESENT. We need
+ to remove that flag. */
+
+ if (!inheritable_components) {
+ security_info_sent &= ~SECINFO_DACL;
+ psd->type &= ~SEC_DESC_DACL_PRESENT;
+ }
+
if (DEBUGLEVEL >= 10) {
DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
fsp_str_dbg(fsp) ));
- NDR_PRINT_DEBUG(security_descriptor, parent_desc);
+ NDR_PRINT_DEBUG(security_descriptor, psd);
}
- return SMB_VFS_FSET_NT_ACL(fsp,
- (SECINFO_OWNER |
- SECINFO_GROUP |
- SECINFO_DACL),
+ if (inherit_owner) {
+ /* We need to be root to force this. */
+ become_root();
+ }
+ status = SMB_VFS_FSET_NT_ACL(fsp,
+ security_info_sent,
psd);
+ if (inherit_owner) {
+ unbecome_root();
+ }
+ return status;
}
-static NTSTATUS check_parent_acl_common(vfs_handle_struct *handle,
+static NTSTATUS get_parent_acl_common(vfs_handle_struct *handle,
const char *path,
- uint32_t access_mask,
struct security_descriptor **pp_parent_desc)
{
char *parent_name = NULL;
- struct security_descriptor *parent_desc = NULL;
- uint32_t access_granted = 0;
NTSTATUS status;
if (!parent_dirname(talloc_tos(), path, &parent_name, NULL)) {
parent_name,
(SECINFO_OWNER |
SECINFO_GROUP |
- SECINFO_DACL),
- &parent_desc);
+ SECINFO_DACL |
+ SECINFO_SACL),
+ pp_parent_desc);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10,("check_parent_acl_common: get_nt_acl_internal "
+ DEBUG(10,("get_parent_acl_common: get_nt_acl_internal "
"on directory %s for "
"path %s returned %s\n",
parent_name,
path,
nt_errstr(status) ));
+ }
+ return status;
+}
+
+static NTSTATUS check_parent_acl_common(vfs_handle_struct *handle,
+ const char *path,
+ uint32_t access_mask,
+ struct security_descriptor **pp_parent_desc)
+{
+ struct security_descriptor *parent_desc = NULL;
+ uint32_t access_granted = 0;
+ NTSTATUS status;
+
+ status = get_parent_acl_common(handle, path, &parent_desc);
+ if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (pp_parent_desc) {
&access_granted);
if(!NT_STATUS_IS_OK(status)) {
DEBUG(10,("check_parent_acl_common: access check "
- "on directory %s for "
+ "on parent directory of "
"path %s for mask 0x%x returned %s\n",
- parent_name,
path,
access_mask,
nt_errstr(status) ));
return NT_STATUS_OK;
}
-static void free_sd_common(void **ptr)
-{
- TALLOC_FREE(*ptr);
-}
-
/*********************************************************************
Check ACL on open. For new files inherit from parent directory.
*********************************************************************/
{
uint32_t access_granted = 0;
struct security_descriptor *pdesc = NULL;
- struct security_descriptor *parent_desc = NULL;
bool file_existed = true;
char *fname = NULL;
NTSTATUS status;
fname,
(SECINFO_OWNER |
SECINFO_GROUP |
- SECINFO_DACL),
+ SECINFO_DACL |
+ SECINFO_SACL),
&pdesc);
if (NT_STATUS_IS_OK(status)) {
/* See if we can access it. */
&access_granted);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10,("open_acl_xattr: %s open "
+ "for access 0x%x (0x%x) "
"refused with error %s\n",
fsp_str_dbg(fsp),
+ (unsigned int)fsp->access_mask,
+ (unsigned int)access_granted,
nt_errstr(status) ));
goto err;
}
* Check the parent directory ACL will allow this.
*/
if (flags & O_CREAT) {
- struct security_descriptor *psd = NULL;
+ struct security_descriptor *parent_desc = NULL;
+ struct security_descriptor **pp_psd = NULL;
status = check_parent_acl_common(handle, fname,
SEC_DIR_ADD_FILE, &parent_desc);
if (!NT_STATUS_IS_OK(status)) {
goto err;
}
- /* Cache the parent security descriptor for
- * later use. We do have an fsp here, but to
- * keep the code consistent with the directory
- * case which doesn't, use the handle. */
- /* Attach this to the conn, move from talloc_tos(). */
- psd = (struct security_descriptor *)talloc_move(handle->conn,
- &parent_desc);
+ /* Cache the parent security descriptor for
+ * later use. */
- if (!psd) {
+ pp_psd = VFS_ADD_FSP_EXTENSION(handle,
+ fsp,
+ struct security_descriptor *,
+ NULL);
+ if (!pp_psd) {
status = NT_STATUS_NO_MEMORY;
goto err;
}
- status = NT_STATUS_NO_MEMORY;
- SMB_VFS_HANDLE_SET_DATA(handle, psd, free_sd_common,
- struct security_descriptor *, goto err);
+
+ *pp_psd = parent_desc;
status = NT_STATUS_OK;
}
}
ret = vfs_stat_smb_fname(handle->conn, path, &sbuf);
if (ret == -1 && errno == ENOENT) {
- struct security_descriptor *parent_desc = NULL;
- struct security_descriptor *psd = NULL;
-
/* We're creating a new directory. */
status = check_parent_acl_common(handle, path,
- SEC_DIR_ADD_SUBDIR, &parent_desc);
+ SEC_DIR_ADD_SUBDIR, NULL);
if (!NT_STATUS_IS_OK(status)) {
errno = map_errno_from_nt_status(status);
return -1;
}
-
- /* Cache the parent security descriptor for
- * later use. We don't have an fsp here so
- * use the handle. */
-
- /* Attach this to the conn, move from talloc_tos(). */
- psd = (struct security_descriptor *)talloc_move(handle->conn,
- &parent_desc);
-
- if (!psd) {
- return -1;
- }
- SMB_VFS_HANDLE_SET_DATA(handle, psd, free_sd_common,
- struct security_descriptor *, return -1);
}
return SMB_VFS_NEXT_MKDIR(handle, path, mode);
NDR_PRINT_DEBUG(security_descriptor,
CONST_DISCARD(struct security_descriptor *,psd));
}
+ /*
+ * Perhaps create_acl_blob should have a status return as well
+ */
create_acl_blob(psd, &blob, XATTR_SD_HASH_TYPE_SHA256, hash);
- store_acl_blob_fsp(handle, fsp, &blob);
+ status = store_acl_blob_fsp(handle, fsp, &blob);
- return NT_STATUS_OK;
+ return status;
}
static SMB_STRUCT_DIR *opendir_acl_common(vfs_handle_struct *handle,
const char *fname, const char *mask, uint32 attr)
{
- NTSTATUS status = check_parent_acl_common(handle, fname,
- SEC_DIR_LIST, NULL);
+ NTSTATUS status;
+ uint32_t access_granted = 0;
+ struct security_descriptor *sd = NULL;
+ status = get_nt_acl_internal(handle,
+ NULL,
+ fname,
+ (SECINFO_OWNER |
+ SECINFO_GROUP |
+ SECINFO_DACL |
+ SECINFO_SACL),
+ &sd);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10,("opendir_acl_common: "
+ "get_nt_acl_internal for dir %s "
+ "failed with error %s\n",
+ fname,
+ nt_errstr(status) ));
+ errno = map_errno_from_nt_status(status);
+ return NULL;
+ }
+
+ /* See if we can access it. */
+ status = smb1_file_se_access_check(handle->conn,
+ sd,
+ get_current_nttok(handle->conn),
+ SEC_DIR_LIST,
+ &access_granted);
if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10,("opendir_acl_common: %s open "
+ "for access SEC_DIR_LIST "
+ "refused with error %s\n",
+ fname,
+ nt_errstr(status) ));
errno = map_errno_from_nt_status(status);
return NULL;
}
+
return SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
}
const char *final_component = NULL;
struct smb_filename local_fname;
int saved_errno = 0;
+ char *saved_dir = NULL;
+
+ saved_dir = vfs_GetWd(talloc_tos(),conn);
+ if (!saved_dir) {
+ saved_errno = errno;
+ goto out;
+ }
if (!parent_dirname(talloc_tos(), path,
&parent_dir, &final_component)) {
parent_dir, final_component ));
/* cd into the parent dir to pin it. */
- ret = SMB_VFS_CHDIR(conn, parent_dir);
+ ret = vfs_ChDir(conn, parent_dir);
if (ret == -1) {
saved_errno = errno;
goto out;
/* Ensure we have this file open with DELETE access. */
id = vfs_file_id_from_sbuf(conn, &local_fname.st);
for (fsp = file_find_di_first(conn->sconn, id); fsp;
- file_find_di_next(fsp)) {
+ fsp = file_find_di_next(fsp)) {
if (fsp->access_mask & DELETE_ACCESS &&
fsp->delete_on_close) {
/* We did open this for delete,
TALLOC_FREE(parent_dir);
- vfs_ChDir(conn, conn->connectpath);
+ if (saved_dir) {
+ vfs_ChDir(conn, saved_dir);
+ }
if (saved_errno) {
errno = saved_errno;
}
{
int ret;
+ /* Try the normal rmdir first. */
ret = SMB_VFS_NEXT_RMDIR(handle, path);
- if (!(ret == -1 && (errno == EACCES || errno == EPERM))) {
- DEBUG(10,("rmdir_acl_common: unlink of %s failed %s\n",
- path,
- strerror(errno) ));
- return ret;
+ if (ret == 0) {
+ return 0;
+ }
+ if (errno == EACCES || errno == EPERM) {
+ /* Failed due to access denied,
+ see if we need to root override. */
+ return acl_common_remove_object(handle,
+ path,
+ true);
}
- return acl_common_remove_object(handle,
- path,
- true);
+ DEBUG(10,("rmdir_acl_common: unlink of %s failed %s\n",
+ path,
+ strerror(errno) ));
+ return -1;
}
static NTSTATUS create_file_acl_common(struct vfs_handle_struct *handle,
files_struct *fsp = NULL;
int info;
struct security_descriptor *parent_sd = NULL;
+ struct security_descriptor **pp_parent_sd = NULL;
status = SMB_VFS_NEXT_CREATE_FILE(handle,
req,
goto out;
}
-
- /* We must have a cached parent sd in this case.
- * attached to the handle. */
-
- SMB_VFS_HANDLE_GET_DATA(handle, parent_sd,
- struct security_descriptor,
- goto err);
+ /* See if we have a cached parent sd, if so, use it. */
+ pp_parent_sd = (struct security_descriptor **)VFS_FETCH_FSP_EXTENSION(handle, fsp);
+ if (!pp_parent_sd) {
+ /* Must be a directory, fetch again (sigh). */
+ status = get_parent_acl_common(handle,
+ fsp->fsp_name->base_name,
+ &parent_sd);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto out;
+ }
+ } else {
+ parent_sd = *pp_parent_sd;
+ }
if (!parent_sd) {
goto err;
out:
- /* Ensure we never leave attached data around. */
- SMB_VFS_HANDLE_FREE_DATA(handle);
+ if (fsp) {
+ VFS_REMOVE_FSP_EXTENSION(handle, fsp);
+ }
if (NT_STATUS_IS_OK(status) && pinfo) {
*pinfo = info;
{
int ret;
+ /* Try the normal unlink first. */
ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
- if (!(ret == -1 && (errno == EACCES || errno == EPERM))) {
- DEBUG(10,("unlink_acl_common: unlink of %s failed %s\n",
- smb_fname->base_name,
- strerror(errno) ));
- return ret;
- }
- /* Don't do anything fancy for streams. */
- if (smb_fname->stream_name) {
- return ret;
+ if (ret == 0) {
+ return 0;
}
+ if (errno == EACCES || errno == EPERM) {
+ /* Failed due to access denied,
+ see if we need to root override. */
- return acl_common_remove_object(handle,
+ /* Don't do anything fancy for streams. */
+ if (smb_fname->stream_name) {
+ return -1;
+ }
+ return acl_common_remove_object(handle,
smb_fname->base_name,
false);
+ }
+
+ DEBUG(10,("unlink_acl_common: unlink of %s failed %s\n",
+ smb_fname->base_name,
+ strerror(errno) ));
+ return -1;
+}
+
+static int chmod_acl_module_common(struct vfs_handle_struct *handle,
+ const char *path, mode_t mode)
+{
+ if (lp_posix_pathnames()) {
+ /* Only allow this on POSIX pathnames. */
+ return SMB_VFS_NEXT_CHMOD(handle, path, mode);
+ }
+ return 0;
+}
+
+static int fchmod_acl_module_common(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, mode_t mode)
+{
+ if (fsp->posix_open) {
+ /* Only allow this on POSIX opens. */
+ return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
+ }
+ return 0;
+}
+
+static int chmod_acl_acl_module_common(struct vfs_handle_struct *handle,
+ const char *name, mode_t mode)
+{
+ if (lp_posix_pathnames()) {
+ /* Only allow this on POSIX pathnames. */
+ return SMB_VFS_NEXT_CHMOD_ACL(handle, name, mode);
+ }
+ return 0;
+}
+
+static int fchmod_acl_acl_module_common(struct vfs_handle_struct *handle,
+ struct files_struct *fsp, mode_t mode)
+{
+ if (fsp->posix_open) {
+ /* Only allow this on POSIX opens. */
+ return SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
+ }
+ return 0;
}
git.samba.org / ddiss / samba.git / blobdiff