Seen while working on similar code. There is no need to make the composition of IMSG_CTL_SHOW_RIB_COMMUNITIES so complicated.
-- :wq Claudio Index: rde.c =================================================================== RCS file: /cvs/src/usr.sbin/bgpd/rde.c,v retrieving revision 1.600 diff -u -p -r1.600 rde.c --- rde.c 7 Apr 2023 13:49:03 -0000 1.600 +++ rde.c 13 Apr 2023 13:47:51 -0000 @@ -2730,16 +2730,10 @@ rde_dump_rib_as(struct prefix *p, struct struct rde_community *comm = prefix_communities(p); size_t len = comm->nentries * sizeof(struct community); if (comm->nentries > 0) { - if ((wbuf = imsg_create(ibuf_se_ctl, - IMSG_CTL_SHOW_RIB_COMMUNITIES, 0, pid, - len)) == NULL) + if (imsg_compose(ibuf_se_ctl, + IMSG_CTL_SHOW_RIB_COMMUNITIES, 0, pid, -1, + comm->communities, len) == -1) return; - if ((bp = ibuf_reserve(wbuf, len)) == NULL) { - ibuf_free(wbuf); - return; - } - memcpy(bp, comm->communities, len); - imsg_close(ibuf_se_ctl, wbuf); } for (l = 0; l < asp->others_len; l++) { if ((a = asp->others[l]) == NULL)