* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-/* NOTE: This is an experimental module, not yet finished. JRA. */
-
#include "includes.h"
+#include "smbd/smbd.h"
+#include "system/filesys.h"
#include "librpc/gen_ndr/xattr.h"
-#include "librpc/gen_ndr/ndr_xattr.h"
+#include "auth.h"
+#include "vfs_acl_common.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "lib/util/tevent_unix.h"
+
+/* Pull in the common functions. */
+#define ACL_MODULE_NAME "acl_xattr"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_VFS
/*******************************************************************
- Parse out a struct security_descriptor from a DATA_BLOB.
+ Pull a security descriptor into a DATA_BLOB from a xattr.
*******************************************************************/
-static NTSTATUS parse_acl_blob(const DATA_BLOB *pblob,
- uint32 security_info,
- struct security_descriptor **ppdesc)
+static ssize_t getxattr_do(vfs_handle_struct *handle,
+ files_struct *fsp,
+ const char *xattr_name,
+ uint8_t *val,
+ size_t size)
{
- TALLOC_CTX *ctx = talloc_tos();
- struct xattr_NTACL xacl;
- enum ndr_err_code ndr_err;
- size_t sd_size;
-
- ndr_err = ndr_pull_struct_blob(pblob, ctx, NULL, &xacl,
- (ndr_pull_flags_fn_t)ndr_pull_xattr_NTACL);
+ ssize_t sizeret;
+ int saved_errno = 0;
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- DEBUG(5, ("parse_acl_blob: ndr_pull_xattr_NTACL failed: %s\n",
- ndr_errstr(ndr_err)));
- return ndr_map_error2ntstatus(ndr_err);;
+ become_root();
+ sizeret = SMB_VFS_FGETXATTR(fsp, xattr_name, val, size);
+ if (sizeret == -1) {
+ saved_errno = errno;
}
+ unbecome_root();
- if (xacl.version != 2) {
- return NT_STATUS_REVISION_MISMATCH;
+ if (saved_errno != 0) {
+ errno = saved_errno;
}
- *ppdesc = make_sec_desc(ctx, SEC_DESC_REVISION, xacl.info.sd_hs->sd->type | SEC_DESC_SELF_RELATIVE,
- (security_info & OWNER_SECURITY_INFORMATION)
- ? xacl.info.sd_hs->sd->owner_sid : NULL,
- (security_info & GROUP_SECURITY_INFORMATION)
- ? xacl.info.sd_hs->sd->group_sid : NULL,
- (security_info & SACL_SECURITY_INFORMATION)
- ? xacl.info.sd_hs->sd->sacl : NULL,
- (security_info & DACL_SECURITY_INFORMATION)
- ? xacl.info.sd_hs->sd->dacl : NULL,
- &sd_size);
-
- TALLOC_FREE(xacl.info.sd);
-
- return (*ppdesc != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
+ return sizeret;
}
-/*******************************************************************
- Pull a security descriptor into a DATA_BLOB from a xattr.
-*******************************************************************/
-
-static NTSTATUS get_acl_blob(TALLOC_CTX *ctx,
+static NTSTATUS fget_acl_blob(TALLOC_CTX *ctx,
vfs_handle_struct *handle,
files_struct *fsp,
- const char *name,
DATA_BLOB *pblob)
{
- size_t size = 1024;
+ size_t size = 4096;
uint8_t *val = NULL;
uint8_t *tmp;
ssize_t sizeret;
- int saved_errno = 0;
ZERO_STRUCTP(pblob);
again:
- tmp = TALLOC_REALLOC_ARRAY(ctx, val, uint8_t, size);
+ tmp = talloc_realloc(ctx, val, uint8_t, size);
if (tmp == NULL) {
TALLOC_FREE(val);
return NT_STATUS_NO_MEMORY;
}
val = tmp;
- become_root();
- if (fsp && fsp->fh->fd != -1) {
- sizeret = SMB_VFS_FGETXATTR(fsp, XATTR_NTACL_NAME, val, size);
- } else {
- sizeret = SMB_VFS_GETXATTR(handle->conn, name,
- XATTR_NTACL_NAME, val, size);
- }
- if (sizeret == -1) {
- saved_errno = errno;
- }
- unbecome_root();
+ sizeret =
+ getxattr_do(handle, fsp, XATTR_NTACL_NAME, val, size);
- /* Max ACL size is 65536 bytes. */
- if (sizeret == -1) {
- errno = saved_errno;
- if ((errno == ERANGE) && (size != 65536)) {
- /* Too small, try again. */
- size = 65536;
- goto again;
- }
-
- /* Real error - exit here. */
- TALLOC_FREE(val);
- return map_nt_error_from_unix(errno);
+ if (sizeret >= 0) {
+ pblob->data = val;
+ pblob->length = sizeret;
+ return NT_STATUS_OK;
}
- pblob->data = val;
- pblob->length = sizeret;
- return NT_STATUS_OK;
-}
-
-/*******************************************************************
- Create a DATA_BLOB from a security descriptor.
-*******************************************************************/
-
-static NTSTATUS create_acl_blob(const struct security_descriptor *psd, DATA_BLOB *pblob)
-{
- struct xattr_NTACL xacl;
- struct security_descriptor_hash sd_hs;
- enum ndr_err_code ndr_err;
- TALLOC_CTX *ctx = talloc_tos();
-
- ZERO_STRUCT(xacl);
- ZERO_STRUCT(sd_hs);
+ if (errno != ERANGE) {
+ goto err;
+ }
- xacl.version = 2;
- xacl.info.sd_hs = &sd_hs;
- xacl.info.sd_hs->sd = CONST_DISCARD(struct security_descriptor *, psd);
- memset(&xacl.info.sd_hs->hash[0], '\0', 16);
+ /* Too small, try again. */
+ sizeret =
+ getxattr_do(handle, fsp, XATTR_NTACL_NAME, NULL, 0);
+ if (sizeret < 0) {
+ goto err;
+ }
- ndr_err = ndr_push_struct_blob(
- pblob, ctx, NULL, &xacl,
- (ndr_push_flags_fn_t)ndr_push_xattr_NTACL);
+ if (size < sizeret) {
+ size = sizeret;
+ }
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- DEBUG(5, ("create_acl_blob: ndr_push_xattr_NTACL failed: %s\n",
- ndr_errstr(ndr_err)));
- return ndr_map_error2ntstatus(ndr_err);;
+ if (size > 65536) {
+ /* Max ACL size is 65536 bytes. */
+ errno = ERANGE;
+ goto err;
}
- return NT_STATUS_OK;
+ goto again;
+ err:
+ /* Real error - exit here. */
+ TALLOC_FREE(val);
+ return map_nt_error_from_unix(errno);
}
/*******************************************************************
int saved_errno = 0;
DEBUG(10,("store_acl_blob_fsp: storing blob length %u on file %s\n",
- (unsigned int)pblob->length, fsp->fsp_name));
+ (unsigned int)pblob->length, fsp_str_dbg(fsp)));
become_root();
- if (fsp->fh->fd != -1) {
- ret = SMB_VFS_FSETXATTR(fsp, XATTR_NTACL_NAME,
+ ret = SMB_VFS_FSETXATTR(fsp, XATTR_NTACL_NAME,
pblob->data, pblob->length, 0);
- } else {
- ret = SMB_VFS_SETXATTR(fsp->conn, fsp->fsp_name,
- XATTR_NTACL_NAME,
- pblob->data, pblob->length, 0);
- }
if (ret) {
saved_errno = errno;
}
unbecome_root();
if (ret) {
- errno = saved_errno;
DEBUG(5, ("store_acl_blob_fsp: setting attr failed for file %s"
"with error %s\n",
- fsp->fsp_name,
- strerror(errno) ));
- return map_nt_error_from_unix(errno);
- }
- return NT_STATUS_OK;
-}
-
-/*******************************************************************
- Store a DATA_BLOB into an xattr given a pathname.
-*******************************************************************/
-
-static NTSTATUS store_acl_blob_pathname(vfs_handle_struct *handle,
- const char *fname,
- DATA_BLOB *pblob)
-{
- connection_struct *conn = handle->conn;
- int ret;
- int saved_errno = 0;
-
- DEBUG(10,("store_acl_blob_pathname: storing blob "
- "length %u on file %s\n",
- (unsigned int)pblob->length, fname));
-
- become_root();
- ret = SMB_VFS_SETXATTR(conn, fname,
- XATTR_NTACL_NAME,
- pblob->data, pblob->length, 0);
- if (ret) {
- saved_errno = errno;
- }
- unbecome_root();
- if (ret) {
+ fsp_str_dbg(fsp),
+ strerror(saved_errno) ));
errno = saved_errno;
- DEBUG(5, ("store_acl_blob_pathname: setting attr failed "
- "for file %s with error %s\n",
- fname,
- strerror(errno) ));
- return map_nt_error_from_unix(errno);
+ return map_nt_error_from_unix(saved_errno);
}
return NT_STATUS_OK;
}
-/*******************************************************************
- Store a DATA_BLOB into an xattr given a pathname.
-*******************************************************************/
+/*********************************************************************
+ Remove a Windows ACL - we're setting the underlying POSIX ACL.
+*********************************************************************/
-static NTSTATUS get_nt_acl_xattr_internal(vfs_handle_struct *handle,
- files_struct *fsp,
- const char *name,
- uint32 security_info,
- struct security_descriptor **ppdesc)
+static int sys_acl_set_fd_xattr(vfs_handle_struct *handle,
+ files_struct *fsp,
+ SMB_ACL_TYPE_T type,
+ SMB_ACL_T theacl)
{
- TALLOC_CTX *ctx = talloc_tos();
- DATA_BLOB blob;
- NTSTATUS status;
+ struct acl_common_fsp_ext *ext = (struct acl_common_fsp_ext *)
+ VFS_FETCH_FSP_EXTENSION(handle, fsp);
+ int ret;
- if (fsp && name == NULL) {
- name = fsp->fsp_name;
+ ret = SMB_VFS_NEXT_SYS_ACL_SET_FD(handle,
+ fsp,
+ type,
+ theacl);
+ if (ret == -1) {
+ return -1;
}
- DEBUG(10, ("get_nt_acl_xattr_internal: name=%s\n", name));
-
- status = get_acl_blob(ctx, handle, fsp, name, &blob);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10, ("get_acl_blob returned %s\n", nt_errstr(status)));
- return status;
+ if (ext != NULL && ext->setting_nt_acl) {
+ return 0;
}
- status = parse_acl_blob(&blob, security_info, ppdesc);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10, ("parse_acl_blob returned %s\n",
- nt_errstr(status)));
- return status;
- }
+ become_root();
+ SMB_VFS_FREMOVEXATTR(fsp, XATTR_NTACL_NAME);
+ unbecome_root();
- TALLOC_FREE(blob.data);
- return status;
+ return 0;
}
-/*********************************************************************
- Create a default security descriptor for a file in case no inheritance
- exists. All permissions to the owner and SYSTEM.
-*********************************************************************/
-
-static struct security_descriptor *default_file_sd(TALLOC_CTX *mem_ctx,
- SMB_STRUCT_STAT *psbuf)
+static int connect_acl_xattr(struct vfs_handle_struct *handle,
+ const char *service,
+ const char *user)
{
- struct dom_sid owner_sid, group_sid;
- size_t sd_size;
- struct security_ace *pace = NULL;
- struct security_acl *pacl = NULL;
-
- uid_to_sid(&owner_sid, psbuf->st_ex_uid);
- gid_to_sid(&group_sid, psbuf->st_ex_gid);
+ const char *security_acl_xattr_name = NULL;
+ int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
+ bool ok;
+ struct acl_common_config *config = NULL;
- pace = TALLOC_ARRAY(mem_ctx, struct security_ace, 2);
- if (!pace) {
- return NULL;
+ if (ret < 0) {
+ return ret;
}
- init_sec_ace(&pace[0], &owner_sid, SEC_ACE_TYPE_ACCESS_ALLOWED,
- SEC_RIGHTS_FILE_ALL, 0);
- init_sec_ace(&pace[1], &global_sid_System, SEC_ACE_TYPE_ACCESS_ALLOWED,
- SEC_RIGHTS_FILE_ALL, 0);
-
- pacl = make_sec_acl(mem_ctx,
- NT4_ACL_REVISION,
- 2,
- pace);
- if (!pacl) {
- return NULL;
+ ok = init_acl_common_config(handle, ACL_MODULE_NAME);
+ if (!ok) {
+ DBG_ERR("init_acl_common_config failed\n");
+ return -1;
}
- return make_sec_desc(mem_ctx,
- SECURITY_DESCRIPTOR_REVISION_1,
- SEC_DESC_SELF_RELATIVE|SEC_DESC_DACL_PRESENT,
- &owner_sid,
- &group_sid,
- NULL,
- pacl,
- &sd_size);
-}
-
-/*********************************************************************
-*********************************************************************/
-
-static NTSTATUS inherit_new_acl(vfs_handle_struct *handle,
- const char *fname,
- files_struct *fsp,
- bool container)
-{
- TALLOC_CTX *ctx = talloc_tos();
- NTSTATUS status;
- struct security_descriptor *parent_desc = NULL;
- struct security_descriptor *psd = NULL;
- DATA_BLOB blob;
- size_t size;
- char *parent_name;
- if (!parent_dirname(ctx, fname, &parent_name, NULL)) {
- return NT_STATUS_NO_MEMORY;
- }
+ /* Ensure we have the parameters correct if we're
+ * using this module. */
+ DEBUG(2,("connect_acl_xattr: setting 'inherit acls = true' "
+ "'dos filemode = true' and "
+ "'force unknown acl user = true' for service %s\n",
+ service ));
+
+ lp_do_parameter(SNUM(handle->conn), "inherit acls", "true");
+ lp_do_parameter(SNUM(handle->conn), "dos filemode", "true");
+ lp_do_parameter(SNUM(handle->conn), "force unknown acl user", "true");
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct acl_common_config,
+ return -1);
+
+ if (config->ignore_system_acls) {
+ mode_t create_mask = lp_create_mask(SNUM(handle->conn));
+ char *create_mask_str = NULL;
+
+ if ((create_mask & 0666) != 0666) {
+ create_mask |= 0666;
+ create_mask_str = talloc_asprintf(handle, "0%o",
+ create_mask);
+ if (create_mask_str == NULL) {
+ DBG_ERR("talloc_asprintf failed\n");
+ return -1;
+ }
- DEBUG(10,("inherit_new_acl: check directory %s\n",
- parent_name));
+ DBG_NOTICE("setting 'create mask = %s'\n", create_mask_str);
- status = get_nt_acl_xattr_internal(handle,
- NULL,
- parent_name,
- (OWNER_SECURITY_INFORMATION |
- GROUP_SECURITY_INFORMATION |
- DACL_SECURITY_INFORMATION),
- &parent_desc);
- if (NT_STATUS_IS_OK(status)) {
- /* Create an inherited descriptor from the parent. */
+ lp_do_parameter (SNUM(handle->conn),
+ "create mask", create_mask_str);
- if (DEBUGLEVEL >= 10) {
- DEBUG(10,("inherit_new_acl: parent acl is:\n"));
- NDR_PRINT_DEBUG(security_descriptor, parent_desc);
+ TALLOC_FREE(create_mask_str);
}
- status = se_create_child_secdesc(ctx,
- &psd,
- &size,
- parent_desc,
- &handle->conn->server_info->ptok->user_sids[PRIMARY_USER_SID_INDEX],
- &handle->conn->server_info->ptok->user_sids[PRIMARY_GROUP_SID_INDEX],
- container);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
- }
-
- if (DEBUGLEVEL >= 10) {
- DEBUG(10,("inherit_new_acl: child acl is:\n"));
- NDR_PRINT_DEBUG(security_descriptor, psd);
+ DBG_NOTICE("setting 'directory mask = 0777', "
+ "'store dos attributes = yes' and all "
+ "'map ...' options to 'no'\n");
+
+ lp_do_parameter(SNUM(handle->conn), "directory mask", "0777");
+ lp_do_parameter(SNUM(handle->conn), "map archive", "no");
+ lp_do_parameter(SNUM(handle->conn), "map hidden", "no");
+ lp_do_parameter(SNUM(handle->conn), "map readonly", "no");
+ lp_do_parameter(SNUM(handle->conn), "map system", "no");
+ lp_do_parameter(SNUM(handle->conn), "store dos attributes",
+ "yes");
+ }
+
+ security_acl_xattr_name = lp_parm_const_string(SNUM(handle->conn),
+ "acl_xattr",
+ "security_acl_name",
+ NULL);
+ if (security_acl_xattr_name != NULL) {
+ config->security_acl_xattr_name = talloc_strdup(config, security_acl_xattr_name);
+ if (config->security_acl_xattr_name == NULL) {
+ return -1;
}
+ }
- } else {
- DEBUG(10,("inherit_new_acl: directory %s failed "
- "to get acl %s\n",
- parent_name,
- nt_errstr(status) ));
- }
-
- if (!psd || psd->dacl == NULL) {
- SMB_STRUCT_STAT sbuf;
- int ret;
-
- TALLOC_FREE(psd);
- if (fsp && !fsp->is_directory && fsp->fh->fd != -1) {
- ret = SMB_VFS_FSTAT(fsp, &sbuf);
- } else {
- if (fsp && fsp->posix_open) {
- ret = SMB_VFS_LSTAT(handle->conn,fname, &sbuf);
- } else {
- ret = SMB_VFS_STAT(handle->conn,fname, &sbuf);
- }
- }
- if (ret == -1) {
- return map_nt_error_from_unix(errno);
- }
- psd = default_file_sd(ctx, &sbuf);
- if (!psd) {
- return NT_STATUS_NO_MEMORY;
- }
+ return 0;
+}
- if (DEBUGLEVEL >= 10) {
- DEBUG(10,("inherit_new_acl: default acl is:\n"));
- NDR_PRINT_DEBUG(security_descriptor, psd);
- }
- }
+static int acl_xattr_unlinkat(vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ int flags)
+{
+ int ret;
- status = create_acl_blob(psd, &blob);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
- }
- if (fsp) {
- return store_acl_blob_fsp(handle, fsp, &blob);
+ if (flags & AT_REMOVEDIR) {
+ ret = rmdir_acl_common(handle,
+ dirfsp,
+ smb_fname);
} else {
- return store_acl_blob_pathname(handle, fname, &blob);
+ ret = unlink_acl_common(handle,
+ dirfsp,
+ smb_fname,
+ flags);
}
+ return ret;
}
-/*********************************************************************
- Check ACL on open. For new files inherit from parent directory.
-*********************************************************************/
+static NTSTATUS acl_xattr_fget_nt_acl(vfs_handle_struct *handle,
+ files_struct *fsp,
+ uint32_t security_info,
+ TALLOC_CTX *mem_ctx,
+ struct security_descriptor **ppdesc)
+{
+ NTSTATUS status;
+ status = fget_nt_acl_common(fget_acl_blob, handle, fsp,
+ security_info, mem_ctx, ppdesc);
+ return status;
+}
-static int open_acl_xattr(vfs_handle_struct *handle,
- struct smb_filename *smb_fname,
- files_struct *fsp,
- int flags,
- mode_t mode)
+static NTSTATUS acl_xattr_fset_nt_acl(vfs_handle_struct *handle,
+ files_struct *fsp,
+ uint32_t security_info_sent,
+ const struct security_descriptor *psd)
{
- uint32_t access_granted = 0;
- struct security_descriptor *pdesc = NULL;
- bool file_existed = true;
- char *fname = NULL;
NTSTATUS status;
+ status = fset_nt_acl_common(fget_acl_blob, store_acl_blob_fsp,
+ ACL_MODULE_NAME,
+ handle, fsp, security_info_sent, psd);
+ return status;
+}
- status = get_full_smb_filename(talloc_tos(), smb_fname,
- &fname);
- if (!NT_STATUS_IS_OK(status)) {
- errno = map_errno_from_nt_status(status);
- return -1;
- }
+struct acl_xattr_getxattrat_state {
+ struct vfs_aio_state aio_state;
+ ssize_t xattr_size;
+ uint8_t *xattr_value;
+};
- status = get_nt_acl_xattr_internal(handle,
- NULL,
- fname,
- (OWNER_SECURITY_INFORMATION |
- GROUP_SECURITY_INFORMATION |
- DACL_SECURITY_INFORMATION),
- &pdesc);
- if (NT_STATUS_IS_OK(status)) {
- /* See if we can access it. */
- status = smb1_file_se_access_check(pdesc,
- handle->conn->server_info->ptok,
- fsp->access_mask,
- &access_granted);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10,("open_acl_xattr: file %s open "
- "refused with error %s\n",
- smb_fname_str_dbg(smb_fname),
- nt_errstr(status) ));
- errno = map_errno_from_nt_status(status);
- return -1;
- }
- } else if (NT_STATUS_EQUAL(status,NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
- file_existed = false;
- }
+static void acl_xattr_getxattrat_done(struct tevent_req *subreq);
- DEBUG(10,("open_acl_xattr: get_nt_acl_attr_internal for "
- "file %s returned %s\n",
- smb_fname_str_dbg(smb_fname),
- nt_errstr(status) ));
+static struct tevent_req *acl_xattr_getxattrat_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct vfs_handle_struct *handle,
+ files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ const char *xattr_name,
+ size_t alloc_hint)
+{
+ struct tevent_req *req = NULL;
+ struct tevent_req *subreq = NULL;
+ struct acl_xattr_getxattrat_state *state = NULL;
+ struct acl_common_config *config = NULL;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct acl_common_config,
+ return NULL);
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct acl_xattr_getxattrat_state);
+ if (req == NULL) {
+ return NULL;
+ }
- fsp->fh->fd = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
+ if (strequal(xattr_name, config->security_acl_xattr_name)) {
+ tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+ return tevent_req_post(req, ev);
+ }
+ if (config->security_acl_xattr_name != NULL &&
+ strequal(xattr_name, XATTR_NTACL_NAME))
+ {
+ xattr_name = config->security_acl_xattr_name;
+ }
- if (!file_existed && fsp->fh->fd != -1) {
- /* File was created. Inherit from parent directory. */
- string_set(&fsp->fsp_name, fname);
- inherit_new_acl(handle, fname, fsp, false);
+ subreq = SMB_VFS_NEXT_GETXATTRAT_SEND(state,
+ ev,
+ handle,
+ dirfsp,
+ smb_fname,
+ xattr_name,
+ alloc_hint);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
}
+ tevent_req_set_callback(subreq, acl_xattr_getxattrat_done, req);
- return fsp->fh->fd;
+ return req;
}
-static int mkdir_acl_xattr(vfs_handle_struct *handle, const char *path, mode_t mode)
+static void acl_xattr_getxattrat_done(struct tevent_req *subreq)
{
- int ret = SMB_VFS_NEXT_MKDIR(handle, path, mode);
-
- if (ret == -1) {
- return ret;
- }
- /* New directory - inherit from parent. */
- inherit_new_acl(handle, path, NULL, true);
- return ret;
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct acl_xattr_getxattrat_state *state = tevent_req_data(
+ req, struct acl_xattr_getxattrat_state);
+
+ state->xattr_size = SMB_VFS_NEXT_GETXATTRAT_RECV(subreq,
+ &state->aio_state,
+ state,
+ &state->xattr_value);
+ TALLOC_FREE(subreq);
+ if (state->xattr_size == -1) {
+ tevent_req_error(req, state->aio_state.error);
+ return;
+ }
+
+ tevent_req_done(req);
}
-/*********************************************************************
- Fetch a security descriptor given an fsp.
-*********************************************************************/
-
-static NTSTATUS fget_nt_acl_xattr(vfs_handle_struct *handle, files_struct *fsp,
- uint32 security_info, struct security_descriptor **ppdesc)
+static ssize_t acl_xattr_getxattrat_recv(struct tevent_req *req,
+ struct vfs_aio_state *aio_state,
+ TALLOC_CTX *mem_ctx,
+ uint8_t **xattr_value)
{
- NTSTATUS status = get_nt_acl_xattr_internal(handle, fsp,
- NULL, security_info, ppdesc);
- if (NT_STATUS_IS_OK(status)) {
- if (DEBUGLEVEL >= 10) {
- DEBUG(10,("fget_nt_acl_xattr: returning xattr sd for file %s\n",
- fsp->fsp_name));
- NDR_PRINT_DEBUG(security_descriptor, *ppdesc);
- }
- return NT_STATUS_OK;
+ struct acl_xattr_getxattrat_state *state = tevent_req_data(
+ req, struct acl_xattr_getxattrat_state);
+ ssize_t xattr_size;
+
+ if (tevent_req_is_unix_error(req, &aio_state->error)) {
+ tevent_req_received(req);
+ return -1;
}
- DEBUG(10,("fget_nt_acl_xattr: failed to get xattr sd for file %s, Error %s\n",
- fsp->fsp_name,
- nt_errstr(status) ));
+ *aio_state = state->aio_state;
+ xattr_size = state->xattr_size;
+ if (xattr_value != NULL) {
+ *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
+ }
- return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp,
- security_info, ppdesc);
+ tevent_req_received(req);
+ return xattr_size;
}
-/*********************************************************************
- Fetch a security descriptor given a pathname.
-*********************************************************************/
-
-static NTSTATUS get_nt_acl_xattr(vfs_handle_struct *handle,
- const char *name, uint32 security_info, struct security_descriptor **ppdesc)
+static ssize_t acl_xattr_fgetxattr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ const char *name,
+ void *value,
+ size_t size)
{
- NTSTATUS status = get_nt_acl_xattr_internal(handle, NULL,
- name, security_info, ppdesc);
- if (NT_STATUS_IS_OK(status)) {
- if (DEBUGLEVEL >= 10) {
- DEBUG(10,("get_nt_acl_xattr: returning xattr sd for file %s\n",
- name));
- NDR_PRINT_DEBUG(security_descriptor, *ppdesc);
- }
- return NT_STATUS_OK;
- }
+ struct acl_common_config *config = NULL;
- DEBUG(10,("get_nt_acl_xattr: failed to get xattr sd for file %s, Error %s\n",
- name,
- nt_errstr(status) ));
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct acl_common_config,
+ return -1);
- return SMB_VFS_NEXT_GET_NT_ACL(handle, name,
- security_info, ppdesc);
-}
+ if (strequal(name, config->security_acl_xattr_name)) {
+ errno = EACCES;
+ return -1;
+ }
+ if (config->security_acl_xattr_name != NULL &&
+ strequal(name, XATTR_NTACL_NAME))
+ {
+ name = config->security_acl_xattr_name;
+ }
-/*********************************************************************
- Store a security descriptor given an fsp.
-*********************************************************************/
+ return SMB_VFS_NEXT_FGETXATTR(handle, fsp, name, value, size);
+}
-static NTSTATUS fset_nt_acl_xattr(vfs_handle_struct *handle, files_struct *fsp,
- uint32 security_info_sent, const struct security_descriptor *psd)
+static ssize_t acl_xattr_flistxattr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ char *listbuf,
+ size_t bufsize)
{
- NTSTATUS status;
- DATA_BLOB blob;
+ struct acl_common_config *config = NULL;
+ ssize_t size;
+ char *p = NULL;
+ size_t nlen, consumed;
- if (DEBUGLEVEL >= 10) {
- DEBUG(10,("fset_nt_acl_xattr: incoming sd for file %s\n",
- fsp->fsp_name));
- NDR_PRINT_DEBUG(security_descriptor,
- CONST_DISCARD(struct security_descriptor *,psd));
- }
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct acl_common_config,
+ return -1);
- status = SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
+ size = SMB_VFS_NEXT_FLISTXATTR(handle, fsp, listbuf, bufsize);
+ if (size < 0) {
+ return -1;
}
- /* Ensure owner and group are set. */
- if (!psd->owner_sid || !psd->group_sid) {
- int ret;
- SMB_STRUCT_STAT sbuf;
- DOM_SID owner_sid, group_sid;
- struct security_descriptor *nc_psd = dup_sec_desc(talloc_tos(), psd);
-
- if (!nc_psd) {
- return NT_STATUS_OK;
- }
- if (fsp->is_directory || fsp->fh->fd == -1) {
- if (fsp->posix_open) {
- ret = SMB_VFS_LSTAT(fsp->conn,fsp->fsp_name, &sbuf);
- } else {
- ret = SMB_VFS_STAT(fsp->conn,fsp->fsp_name, &sbuf);
- }
- } else {
- ret = SMB_VFS_FSTAT(fsp, &sbuf);
+ p = listbuf;
+ while (p - listbuf < size) {
+ nlen = strlen(p) + 1;
+ if (strequal(p, config->security_acl_xattr_name)) {
+ break;
}
- if (ret == -1) {
- /* Lower level acl set succeeded,
- * so still return OK. */
- return NT_STATUS_OK;
- }
- create_file_sids(&sbuf, &owner_sid, &group_sid);
- /* This is safe as nc_psd is discarded at fn exit. */
- nc_psd->owner_sid = &owner_sid;
- nc_psd->group_sid = &group_sid;
- security_info_sent |= (OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION);
- psd = nc_psd;
- }
-
-#if 0
- if ((security_info_sent & DACL_SECURITY_INFORMATION) &&
- psd->dacl != NULL &&
- (psd->type & (SE_DESC_DACL_AUTO_INHERITED|
- SE_DESC_DACL_AUTO_INHERIT_REQ))==
- (SE_DESC_DACL_AUTO_INHERITED|
- SE_DESC_DACL_AUTO_INHERIT_REQ) ) {
- struct security_descriptor *new_psd = NULL;
- status = append_parent_acl(fsp, psd, &new_psd);
- if (!NT_STATUS_IS_OK(status)) {
- /* Lower level acl set succeeded,
- * so still return OK. */
- return NT_STATUS_OK;
- }
- psd = new_psd;
+ p += nlen;
+ }
+ if (p - listbuf >= size) {
+ /* No match */
+ return size;
}
-#endif
- if (DEBUGLEVEL >= 10) {
- DEBUG(10,("fset_nt_acl_xattr: storing xattr sd for file %s\n",
- fsp->fsp_name));
- NDR_PRINT_DEBUG(security_descriptor,
- CONST_DISCARD(struct security_descriptor *,psd));
+ /*
+ * The consumed helper variable just makes the math
+ * a bit more digestible.
+ */
+ consumed = p - listbuf;
+ if (consumed + nlen < size) {
+ /* If not the last name move, else just skip */
+ memmove(p, p + nlen, size - consumed - nlen);
}
- create_acl_blob(psd, &blob);
- store_acl_blob_fsp(handle, fsp, &blob);
+ size -= nlen;
- return NT_STATUS_OK;
+ return size;
}
-/*********************************************************************
- Remove a Windows ACL - we're setting the underlying POSIX ACL.
-*********************************************************************/
-
-static int sys_acl_set_file_xattr(vfs_handle_struct *handle,
- const char *name,
- SMB_ACL_TYPE_T type,
- SMB_ACL_T theacl)
+static int acl_xattr_fremovexattr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ const char *name)
{
- int ret = SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle,
- name,
- type,
- theacl);
- if (ret == -1) {
- return -1;
- }
+ struct acl_common_config *config = NULL;
- become_root();
- SMB_VFS_REMOVEXATTR(handle->conn, name, XATTR_NTACL_NAME);
- unbecome_root();
-
- return ret;
-}
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct acl_common_config,
+ return -1);
-/*********************************************************************
- Remove a Windows ACL - we're setting the underlying POSIX ACL.
-*********************************************************************/
-
-static int sys_acl_set_fd_xattr(vfs_handle_struct *handle,
- files_struct *fsp,
- SMB_ACL_T theacl)
-{
- int ret = SMB_VFS_NEXT_SYS_ACL_SET_FD(handle,
- fsp,
- theacl);
- if (ret == -1) {
+ if (strequal(name, config->security_acl_xattr_name)) {
+ errno = EACCES;
return -1;
}
+ if (config->security_acl_xattr_name != NULL &&
+ strequal(name, XATTR_NTACL_NAME))
+ {
+ name = config->security_acl_xattr_name;
+ }
- become_root();
- SMB_VFS_FREMOVEXATTR(fsp, XATTR_NTACL_NAME);
- unbecome_root();
-
- return ret;
+ return SMB_VFS_NEXT_FREMOVEXATTR(handle, fsp, name);
}
-/* VFS operations structure */
-
-static vfs_op_tuple skel_op_tuples[] =
+static int acl_xattr_fsetxattr(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ const char *name,
+ const void *value,
+ size_t size,
+ int flags)
{
- {SMB_VFS_OP(mkdir_acl_xattr), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(open_acl_xattr), SMB_VFS_OP_OPEN, SMB_VFS_LAYER_TRANSPARENT},
+ struct acl_common_config *config = NULL;
- /* NT File ACL operations */
+ SMB_VFS_HANDLE_GET_DATA(handle, config,
+ struct acl_common_config,
+ return -1);
- {SMB_VFS_OP(fget_nt_acl_xattr),SMB_VFS_OP_FGET_NT_ACL,SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(get_nt_acl_xattr), SMB_VFS_OP_GET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(fset_nt_acl_xattr),SMB_VFS_OP_FSET_NT_ACL,SMB_VFS_LAYER_TRANSPARENT},
+ if (strequal(name, config->security_acl_xattr_name)) {
+ errno = EACCES;
+ return -1;
+ }
+ if (config->security_acl_xattr_name != NULL &&
+ strequal(name, XATTR_NTACL_NAME))
+ {
+ name = config->security_acl_xattr_name;
+ }
- /* POSIX ACL operations. */
- {SMB_VFS_OP(sys_acl_set_file_xattr), SMB_VFS_OP_SYS_ACL_SET_FILE, SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(sys_acl_set_fd_xattr), SMB_VFS_OP_SYS_ACL_SET_FD, SMB_VFS_LAYER_TRANSPARENT},
+ return SMB_VFS_NEXT_FSETXATTR(handle, fsp, name, value, size, flags);
+}
- {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
+static struct vfs_fn_pointers vfs_acl_xattr_fns = {
+ .connect_fn = connect_acl_xattr,
+ .unlinkat_fn = acl_xattr_unlinkat,
+ .fchmod_fn = fchmod_acl_module_common,
+ .fget_nt_acl_fn = acl_xattr_fget_nt_acl,
+ .fset_nt_acl_fn = acl_xattr_fset_nt_acl,
+ .sys_acl_set_fd_fn = sys_acl_set_fd_xattr,
+ .getxattrat_send_fn = acl_xattr_getxattrat_send,
+ .getxattrat_recv_fn = acl_xattr_getxattrat_recv,
+ .fgetxattr_fn = acl_xattr_fgetxattr,
+ .flistxattr_fn = acl_xattr_flistxattr,
+ .fremovexattr_fn = acl_xattr_fremovexattr,
+ .fsetxattr_fn = acl_xattr_fsetxattr,
};
-NTSTATUS vfs_acl_xattr_init(void)
+static_decl_vfs;
+NTSTATUS vfs_acl_xattr_init(TALLOC_CTX *ctx)
{
- return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "acl_xattr", skel_op_tuples);
+ return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "acl_xattr",
+ &vfs_acl_xattr_fns);
}
git.samba.org / samba.git / blobdiff