libsmb: Make readlink issue posix_readlink

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>

diff --git a/source3/libsmb/clisymlink.c b/source3/libsmb/clisymlink.c
index f77f2c050abf91f48ef2672ff3f7e117e5384eb6..12d644eb68dbfd67ef45d519829758aa29b4bfd5 100644 (file)
--- a/source3/libsmb/clisymlink.c
+++ b/source3/libsmb/clisymlink.c
@@ -228,8 +228,10 @@ struct cli_readlink_state {
        NTSTATUS get_reparse_status;
        uint8_t *data;
        uint32_t num_data;
+       char *target;
 };
 
+static void cli_readlink_posix1_done(struct tevent_req *subreq);
 static void cli_readlink_opened(struct tevent_req *subreq);
 static void cli_readlink_got_reparse_data(struct tevent_req *subreq);
 static void cli_readlink_closed(struct tevent_req *subreq);
@@ -249,6 +251,18 @@ struct tevent_req *cli_readlink_send(TALLOC_CTX *mem_ctx,
        state->ev = ev;
        state->cli = cli;
 
+       if (cli->requested_posix_capabilities != 0) {
+               /*
+                * Only happens for negotiated SMB1 posix caps
+                */
+               subreq = cli_posix_readlink_send(state, ev, cli, fname);
+               if (tevent_req_nomem(subreq, req)) {
+                       return tevent_req_post(req, ev);
+               }
+               tevent_req_set_callback(subreq, cli_readlink_posix1_done, req);
+               return req;
+       }
+
        subreq = cli_ntcreate_send(
                state, ev, cli, fname, 0, FILE_READ_ATTRIBUTES | FILE_READ_EA,
                0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
@@ -261,6 +275,22 @@ struct tevent_req *cli_readlink_send(TALLOC_CTX *mem_ctx,
        return req;
 }
 
+static void cli_readlink_posix1_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       struct cli_readlink_state *state = tevent_req_data(
+               req, struct cli_readlink_state);
+       NTSTATUS status;
+
+       status = cli_posix_readlink_recv(subreq, state, &state->target);
+       TALLOC_FREE(subreq);
+       if (tevent_req_nterror(req, status)) {
+               return;
+       }
+       tevent_req_done(req);
+}
+
 static void cli_readlink_opened(struct tevent_req *subreq)
 {
        struct tevent_req *req = tevent_req_callback_data(
@@ -345,6 +375,23 @@ NTSTATUS cli_readlink_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
                return status;
        }
 
+       if (state->target != NULL) {
+               /*
+                * SMB1 posix version
+                */
+               if (psubstitute_name != NULL) {
+                       *psubstitute_name = talloc_move(
+                               mem_ctx, &state->target);
+               }
+               if (pprint_name != NULL) {
+                       *pprint_name = NULL;
+               }
+               if (pflags != NULL) {
+                       *pflags = 0;
+               }
+               return NT_STATUS_OK;
+       }
+
        symlink = symlink_reparse_buffer_parse(
                talloc_tos(), state->data, state->num_data);
        if (symlink == NULL) {