Date: Sun, 23 Aug 2020 23:19:32 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r364594 - stable/12/sys/netinet Message-ID: <202008232319.07NNJWmQ030692@repo.freebsd.org>
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Author: tuexen Date: Sun Aug 23 23:19:32 2020 New Revision: 364594 URL: https://svnweb.freebsd.org/changeset/base/364594 Log: MFC r361243: Replace snprintf() by SCTP_SNPRINTF() and let SCTP_SNPRINTF() map to snprintf() on FreeBSD. This allows to check for failures of snprintf() on platforms other than FreeBSD kernel. Modified: stable/12/sys/netinet/sctp_asconf.c stable/12/sys/netinet/sctp_indata.c stable/12/sys/netinet/sctp_input.c stable/12/sys/netinet/sctp_os_bsd.h stable/12/sys/netinet/sctp_output.c stable/12/sys/netinet/sctp_pcb.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/netinet/sctp_asconf.c ============================================================================== --- stable/12/sys/netinet/sctp_asconf.c Sun Aug 23 23:17:51 2020 (r364593) +++ stable/12/sys/netinet/sctp_asconf.c Sun Aug 23 23:19:32 2020 (r364594) @@ -1713,8 +1713,7 @@ sctp_handle_asconf_ack(struct mbuf *m, int offset, char msg[SCTP_DIAG_INFO_LEN]; SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got unexpected next serial number! Aborting asoc!\n"); - snprintf(msg, sizeof(msg), "Never sent serial number %8.8x", - serial_num); + SCTP_SNPRINTF(msg, sizeof(msg), "Never sent serial number %8.8x", serial_num); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); *abort_no_unlock = 1; Modified: stable/12/sys/netinet/sctp_indata.c ============================================================================== --- stable/12/sys/netinet/sctp_indata.c Sun Aug 23 23:17:51 2020 (r364593) +++ stable/12/sys/netinet/sctp_indata.c Sun Aug 23 23:19:32 2020 (r364594) @@ -434,7 +434,7 @@ sctp_abort_in_reasm(struct sctp_tcb *stcb, struct mbuf *oper; if (stcb->asoc.idata_supported) { - snprintf(msg, sizeof(msg), + SCTP_SNPRINTF(msg, sizeof(msg), "Reass %x,CF:%x,TSN=%8.8x,SID=%4.4x,FSN=%8.8x,MID:%8.8x", opspot, control->fsn_included, @@ -442,7 +442,7 @@ sctp_abort_in_reasm(struct sctp_tcb *stcb, chk->rec.data.sid, chk->rec.data.fsn, chk->rec.data.mid); } else { - snprintf(msg, sizeof(msg), + SCTP_SNPRINTF(msg, sizeof(msg), "Reass %x,CI:%x,TSN=%8.8x,SID=%4.4x,FSN=%4.4x,SSN:%4.4x", opspot, control->fsn_included, @@ -533,11 +533,11 @@ sctp_queue_data_to_stream(struct sctp_tcb *stcb, */ TAILQ_INSERT_HEAD(&strm->inqueue, control, next_instrm); if (asoc->idata_supported) { - snprintf(msg, sizeof(msg), "Delivered MID=%8.8x, got TSN=%8.8x, SID=%4.4x, MID=%8.8x", + SCTP_SNPRINTF(msg, sizeof(msg), "Delivered MID=%8.8x, got TSN=%8.8x, SID=%4.4x, MID=%8.8x", strm->last_mid_delivered, control->sinfo_tsn, control->sinfo_stream, control->mid); } else { - snprintf(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", + SCTP_SNPRINTF(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", (uint16_t)strm->last_mid_delivered, control->sinfo_tsn, control->sinfo_stream, @@ -648,9 +648,8 @@ sctp_queue_data_to_stream(struct sctp_tcb *stcb, * to put it on the queue. */ if (sctp_place_control_in_stream(strm, asoc, control)) { - snprintf(msg, sizeof(msg), - "Queue to str MID: %u duplicate", - control->mid); + SCTP_SNPRINTF(msg, sizeof(msg), + "Queue to str MID: %u duplicate", control->mid); sctp_clean_up_control(stcb, control); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_3; @@ -1881,8 +1880,7 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc * can *not* be fsn 0. XXX: This can happen in case of a * wrap around. Ignore is for now. */ - snprintf(msg, sizeof(msg), "FSN zero for MID=%8.8x, but flags=%2.2x", - mid, chk_flags); + SCTP_SNPRINTF(msg, sizeof(msg), "FSN zero for MID=%8.8x, but flags=%2.2x", mid, chk_flags); goto err_out; } control = sctp_find_reasm_entry(&asoc->strmin[sid], mid, ordered, asoc->idata_supported); @@ -1893,7 +1891,7 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc if (control != NULL) { /* We found something, does it belong? */ if (ordered && (mid != control->mid)) { - snprintf(msg, sizeof(msg), "Reassembly problem (MID=%8.8x)", mid); + SCTP_SNPRINTF(msg, sizeof(msg), "Reassembly problem (MID=%8.8x)", mid); err_out: op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_16; @@ -1906,7 +1904,8 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc * We can't have a switched order with an * unordered chunk */ - snprintf(msg, sizeof(msg), "All fragments of a user message must be ordered or unordered (TSN=%8.8x)", + SCTP_SNPRINTF(msg, sizeof(msg), + "All fragments of a user message must be ordered or unordered (TSN=%8.8x)", tsn); goto err_out; } @@ -1915,7 +1914,8 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc * We can't have a switched unordered with a * ordered chunk */ - snprintf(msg, sizeof(msg), "All fragments of a user message must be ordered or unordered (TSN=%8.8x)", + SCTP_SNPRINTF(msg, sizeof(msg), + "All fragments of a user message must be ordered or unordered (TSN=%8.8x)", tsn); goto err_out; } @@ -1930,12 +1930,14 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc if (ordered || asoc->idata_supported) { SCTPDBG(SCTP_DEBUG_XXX, "chunk_flags: 0x%x dup detected on MID: %u\n", chk_flags, mid); - snprintf(msg, sizeof(msg), "Duplicate MID=%8.8x detected.", mid); + SCTP_SNPRINTF(msg, sizeof(msg), "Duplicate MID=%8.8x detected.", mid); goto err_out; } else { if ((tsn == control->fsn_included + 1) && (control->end_added == 0)) { - snprintf(msg, sizeof(msg), "Illegal message sequence, missing end for MID: %8.8x", control->fsn_included); + SCTP_SNPRINTF(msg, sizeof(msg), + "Illegal message sequence, missing end for MID: %8.8x", + control->fsn_included); goto err_out; } else { control = NULL; @@ -2032,13 +2034,13 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc mid, asoc->strmin[sid].last_mid_delivered); if (asoc->idata_supported) { - snprintf(msg, sizeof(msg), "Delivered MID=%8.8x, got TSN=%8.8x, SID=%4.4x, MID=%8.8x", + SCTP_SNPRINTF(msg, sizeof(msg), "Delivered MID=%8.8x, got TSN=%8.8x, SID=%4.4x, MID=%8.8x", asoc->strmin[sid].last_mid_delivered, tsn, sid, mid); } else { - snprintf(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", + SCTP_SNPRINTF(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", (uint16_t)asoc->strmin[sid].last_mid_delivered, tsn, sid, @@ -2769,7 +2771,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; - snprintf(msg, sizeof(msg), "%s", "I-DATA chunk received when DATA was negotiated"); + SCTP_SNPRINTF(msg, sizeof(msg), "%s", "I-DATA chunk received when DATA was negotiated"); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_20; sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); @@ -2780,7 +2782,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; - snprintf(msg, sizeof(msg), "%s", "DATA chunk received when I-DATA was negotiated"); + SCTP_SNPRINTF(msg, sizeof(msg), "%s", "DATA chunk received when I-DATA was negotiated"); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_21; sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); @@ -2803,7 +2805,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; - snprintf(msg, sizeof(msg), "%s chunk of length %u", + SCTP_SNPRINTF(msg, sizeof(msg), "%s chunk of length %u", ch->chunk_type == SCTP_DATA ? "DATA" : "I-DATA", chk_length); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); @@ -2874,7 +2876,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; - snprintf(msg, sizeof(msg), "DATA chunk followed by chunk of type %2.2x", + SCTP_SNPRINTF(msg, sizeof(msg), "DATA chunk followed by chunk of type %2.2x", ch->chunk_type); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); @@ -2893,8 +2895,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; - snprintf(msg, sizeof(msg), "Chunk of length %u", - chk_length); + SCTP_SNPRINTF(msg, sizeof(msg), "Chunk of length %u", chk_length); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_23; sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); @@ -4043,7 +4044,8 @@ sctp_express_handle_sack(struct sctp_tcb *stcb, uint32 *abort_now = 1; /* XXX */ - snprintf(msg, sizeof(msg), "Cum ack %8.8x greater or equal than TSN %8.8x", + SCTP_SNPRINTF(msg, sizeof(msg), + "Cum ack %8.8x greater or equal than TSN %8.8x", cumack, send_s); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_24; @@ -4585,7 +4587,8 @@ sctp_handle_sack(struct mbuf *m, int offset_seg, int o hopeless_peer: *abort_now = 1; /* XXX */ - snprintf(msg, sizeof(msg), "Cum ack %8.8x greater or equal than TSN %8.8x", + SCTP_SNPRINTF(msg, sizeof(msg), + "Cum ack %8.8x greater or equal than TSN %8.8x", cum_ack, send_s); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_28; @@ -5629,7 +5632,7 @@ sctp_handle_forward_tsn(struct sctp_tcb *stcb, * give out). This must be an attacker. */ *abort_flag = 1; - snprintf(msg, sizeof(msg), + SCTP_SNPRINTF(msg, sizeof(msg), "New cum ack %8.8x too high, highest TSN %8.8x", new_cum_tsn, asoc->highest_tsn_inside_map); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); Modified: stable/12/sys/netinet/sctp_input.c ============================================================================== --- stable/12/sys/netinet/sctp_input.c Sun Aug 23 23:17:51 2020 (r364593) +++ stable/12/sys/netinet/sctp_input.c Sun Aug 23 23:19:32 2020 (r364594) @@ -4692,7 +4692,7 @@ sctp_process_control(struct mbuf *m, int iphlen, int * } } if (stcb == NULL) { - snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); + SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); /* no association, so it's out of the blue... */ @@ -4734,7 +4734,7 @@ sctp_process_control(struct mbuf *m, int iphlen, int * if (stcb != NULL) { SCTP_TCB_UNLOCK(stcb); } - snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); + SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_handle_ootb(m, iphlen, *offset, src, dst, @@ -5671,7 +5671,7 @@ sctp_common_input_processing(struct mbuf **mm, int iph SCTP_TCB_UNLOCK(stcb); stcb = NULL; SCTP_PROBE5(receive, NULL, stcb, m, stcb, sh); - snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); + SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_handle_ootb(m, iphlen, offset, src, dst, sh, inp, op_err, @@ -5733,7 +5733,7 @@ sctp_common_input_processing(struct mbuf **mm, int iph if (stcb == NULL) { /* out of the blue DATA chunk */ SCTP_PROBE5(receive, NULL, NULL, m, NULL, sh); - snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); + SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_handle_ootb(m, iphlen, offset, src, dst, sh, inp, op_err, @@ -5799,7 +5799,7 @@ sctp_common_input_processing(struct mbuf **mm, int iph /* * We consider OOTB any data sent during asoc setup. */ - snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); + SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_handle_ootb(m, iphlen, offset, src, dst, sh, inp, op_err, Modified: stable/12/sys/netinet/sctp_os_bsd.h ============================================================================== --- stable/12/sys/netinet/sctp_os_bsd.h Sun Aug 23 23:17:51 2020 (r364593) +++ stable/12/sys/netinet/sctp_os_bsd.h Sun Aug 23 23:19:32 2020 (r364594) @@ -294,6 +294,8 @@ typedef struct callout sctp_os_timer_t; #define SCTP_ALIGN_TO_END(m, len) M_ALIGN(m, len) +#define SCTP_SNPRINTF(...) snprintf(__VA_ARGS__) + /* We make it so if you have up to 4 threads * writing based on the default size of * the packet log 65 k, that would be Modified: stable/12/sys/netinet/sctp_output.c ============================================================================== --- stable/12/sys/netinet/sctp_output.c Sun Aug 23 23:17:51 2020 (r364593) +++ stable/12/sys/netinet/sctp_output.c Sun Aug 23 23:19:32 2020 (r364594) @@ -5587,7 +5587,7 @@ do_a_abort: if (op_err == NULL) { char msg[SCTP_DIAG_INFO_LEN]; - snprintf(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); + SCTP_SNPRINTF(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); } @@ -6764,7 +6764,7 @@ sctp_sendall_iterator(struct sctp_inpcb *inp, struct s char msg[SCTP_DIAG_INFO_LEN]; abort_anyway: - snprintf(msg, sizeof(msg), + SCTP_SNPRINTF(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); @@ -9632,7 +9632,7 @@ sctp_chunk_retransmission(struct sctp_inpcb *inp, struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; - snprintf(msg, sizeof(msg), "TSN %8.8x retransmitted %d times, giving up", + SCTP_SNPRINTF(msg, sizeof(msg), "TSN %8.8x retransmitted %d times, giving up", chk->rec.data.tsn, chk->snd_count); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); @@ -13609,7 +13609,7 @@ dataless_eof: atomic_add_int(&stcb->asoc.refcnt, -1); free_cnt_applied = 0; } - snprintf(msg, sizeof(msg), + SCTP_SNPRINTF(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); Modified: stable/12/sys/netinet/sctp_pcb.c ============================================================================== --- stable/12/sys/netinet/sctp_pcb.c Sun Aug 23 23:17:51 2020 (r364593) +++ stable/12/sys/netinet/sctp_pcb.c Sun Aug 23 23:19:32 2020 (r364594) @@ -541,9 +541,9 @@ sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint3 atomic_add_int(&vrf->refcount, 1); sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family); if (if_name != NULL) { - snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name); + SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name); } else { - snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown"); + SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown"); } hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))]; LIST_INIT(&sctp_ifnp->ifalist); @@ -6229,7 +6229,7 @@ sctp_load_addresses_from_init(struct sctp_tcb *stcb, s * in setup state we * abort this guy */ - snprintf(msg, sizeof(msg), + SCTP_SNPRINTF(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); @@ -6329,7 +6329,7 @@ sctp_load_addresses_from_init(struct sctp_tcb *stcb, s * in setup state we * abort this guy */ - snprintf(msg, sizeof(msg), + SCTP_SNPRINTF(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg);
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