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-rw-r--r--source3/libsmb/clisymlink.c228
-rw-r--r--source3/libsmb/proto.h12
2 files changed, 240 insertions, 0 deletions
diff --git a/source3/libsmb/clisymlink.c b/source3/libsmb/clisymlink.c
new file mode 100644
index 0000000000..e5c2c1a89d
--- /dev/null
+++ b/source3/libsmb/clisymlink.c
@@ -0,0 +1,228 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Client implementation of setting symlinks using reparse points
+ * Copyright (C) Volker Lendecke 2011
+ *
+ * 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
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "libsmb/libsmb.h"
+#include "../lib/util/tevent_ntstatus.h"
+#include "async_smb.h"
+#include "libsmb/clirap.h"
+#include "trans2.h"
+#include "ntioctl.h"
+#include "libcli/security/secdesc.h"
+#include "libcli/security/security.h"
+
+struct cli_symlink_state {
+ struct tevent_context *ev;
+ struct cli_state *cli;
+ const char *oldpath;
+ const char *newpath;
+ uint32_t flags;
+
+ uint16_t fnum;
+
+ uint16_t setup[4];
+ NTSTATUS set_reparse_status;
+};
+
+static void cli_symlink_create_done(struct tevent_req *subreq);
+static void cli_symlink_set_reparse_done(struct tevent_req *subreq);
+static void cli_symlink_delete_on_close_done(struct tevent_req *subreq);
+static void cli_symlink_close_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_symlink_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct cli_state *cli,
+ const char *oldpath,
+ const char *newpath,
+ uint32_t flags)
+{
+ struct tevent_req *req, *subreq;
+ struct cli_symlink_state *state;
+
+ req = tevent_req_create(mem_ctx, &state, struct cli_symlink_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->ev = ev;
+ state->cli = cli;
+ state->oldpath = oldpath;
+ state->newpath = newpath;
+ state->flags = flags;
+
+ subreq = cli_ntcreate_send(
+ state, ev, cli, state->oldpath, 0,
+ SYNCHRONIZE_ACCESS|DELETE_ACCESS|
+ FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES,
+ FILE_ATTRIBUTE_NORMAL, FILE_SHARE_NONE, FILE_CREATE,
+ FILE_OPEN_REPARSE_POINT|FILE_SYNCHRONOUS_IO_NONALERT|
+ FILE_NON_DIRECTORY_FILE, 0);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, cli_symlink_create_done, req);
+ return req;
+}
+
+static void cli_symlink_create_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_symlink_state *state = tevent_req_data(
+ req, struct cli_symlink_state);
+ uint8_t *data;
+ size_t data_len;
+ NTSTATUS status;
+
+ status = cli_ntcreate_recv(subreq, &state->fnum);
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ SIVAL(state->setup, 0, FSCTL_SET_REPARSE_POINT);
+ SSVAL(state->setup, 4, state->fnum);
+ SCVAL(state->setup, 6, 1); /* IsFcntl */
+ SCVAL(state->setup, 7, 0); /* IsFlags */
+
+ if (!symlink_reparse_buffer_marshall(
+ state->newpath, NULL, state->flags, state,
+ &data, &data_len)) {
+ tevent_req_oom(req);
+ return;
+ }
+
+ subreq = cli_trans_send(state, state->ev, state->cli, SMBnttrans,
+ NULL, -1, /* name, fid */
+ NT_TRANSACT_IOCTL, 0,
+ state->setup, 4, 0, /* setup */
+ NULL, 0, 0, /* param */
+ data, data_len, 0); /* data */
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq, cli_symlink_set_reparse_done, req);
+}
+
+static void cli_symlink_set_reparse_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_symlink_state *state = tevent_req_data(
+ req, struct cli_symlink_state);
+
+ state->set_reparse_status = cli_trans_recv(
+ subreq, NULL, NULL,
+ NULL, 0, NULL, /* rsetup */
+ NULL, 0, NULL, /* rparam */
+ NULL, 0, NULL); /* rdata */
+ TALLOC_FREE(subreq);
+
+ if (NT_STATUS_IS_OK(state->set_reparse_status)) {
+ subreq = cli_close_send(state, state->ev, state->cli,
+ state->fnum);
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq, cli_symlink_close_done, req);
+ return;
+ }
+ subreq = cli_nt_delete_on_close_send(
+ state, state->ev, state->cli, state->fnum, true);
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq, cli_symlink_delete_on_close_done, req);
+}
+
+static void cli_symlink_delete_on_close_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_symlink_state *state = tevent_req_data(
+ req, struct cli_symlink_state);
+ NTSTATUS status;
+
+ status = cli_nt_delete_on_close_recv(subreq);
+ TALLOC_FREE(subreq);
+
+ /*
+ * Ignore status, we can't do much anyway in case of failure
+ */
+
+ subreq = cli_close_send(state, state->ev, state->cli, state->fnum);
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq, cli_symlink_close_done, req);
+}
+
+static void cli_symlink_close_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_symlink_state *state = tevent_req_data(
+ req, struct cli_symlink_state);
+ NTSTATUS status;
+
+ status = cli_close_recv(subreq);
+ TALLOC_FREE(subreq);
+
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+ if (tevent_req_nterror(req, state->set_reparse_status)) {
+ return;
+ }
+ tevent_req_done(req);
+}
+
+NTSTATUS cli_symlink_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
+NTSTATUS cli_symlink(struct cli_state *cli, const char *oldname,
+ const char *newname, uint32_t flags)
+{
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct event_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+ if (cli_has_async_calls(cli)) {
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
+ ev = event_context_init(frame);
+ if (ev == NULL) {
+ goto fail;
+ }
+ req = cli_symlink_send(frame, ev, cli, oldname, newname, flags);
+ if (req == NULL) {
+ goto fail;
+ }
+ if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+ goto fail;
+ }
+ status = cli_symlink_recv(req);
+ fail:
+ TALLOC_FREE(frame);
+ return status;
+}
diff --git a/source3/libsmb/proto.h b/source3/libsmb/proto.h
index 4d820d6bc6..a266f7cd41 100644
--- a/source3/libsmb/proto.h
+++ b/source3/libsmb/proto.h
@@ -860,4 +860,16 @@ bool symlink_reparse_buffer_parse(
const uint8_t *src, size_t srclen, TALLOC_CTX *mem_ctx,
char **psubstitute_name, char **pprint_name, uint32_t *pflags);
+/* The following definitions come from libsmb/clisymlink.c */
+
+struct tevent_req *cli_symlink_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct cli_state *cli,
+ const char *oldpath,
+ const char *newpath,
+ uint32_t flags);
+NTSTATUS cli_symlink_recv(struct tevent_req *req);
+NTSTATUS cli_symlink(struct cli_state *cli, const char *oldname,
+ const char *newname, uint32_t flags);
+
#endif /* _LIBSMB_PROTO_H_ */