提交 9e971b71 编写于 作者: D David Teigland 提交者: Steven Whitehouse

[DLM] add version check

Check if we receive a message from another lockspace member running a
version of the dlm with an incompatible inter-node message protocol.
Signed-off-by: NDavid Teigland <teigland@redhat.com>
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
上级 38aa8b0c
......@@ -82,8 +82,17 @@ static void make_config(struct dlm_ls *ls, struct rcom_config *rf)
rf->rf_lsflags = ls->ls_exflags;
}
static int check_config(struct dlm_ls *ls, struct rcom_config *rf, int nodeid)
static int check_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
{
struct rcom_config *rf = (struct rcom_config *) rc->rc_buf;
if ((rc->rc_header.h_version & 0xFFFF0000) != DLM_HEADER_MAJOR) {
log_error(ls, "version mismatch: %x nodeid %d: %x",
DLM_HEADER_MAJOR | DLM_HEADER_MINOR, nodeid,
rc->rc_header.h_version);
return -EINVAL;
}
if (rf->rf_lvblen != ls->ls_lvblen ||
rf->rf_lsflags != ls->ls_exflags) {
log_error(ls, "config mismatch: %d,%x nodeid %d: %d,%x",
......@@ -145,8 +154,7 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid)
log_debug(ls, "remote node %d not ready", nodeid);
rc->rc_result = 0;
} else
error = check_config(ls, (struct rcom_config *) rc->rc_buf,
nodeid);
error = check_config(ls, rc, nodeid);
/* the caller looks at rc_result for the remote recovery status */
out:
return error;
......
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