177 static int pcap_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char **datap);
223 	struct pcap_file_header hdr;  in pcap_check_header()  local
255 	hdr.magic = magic_int;  in pcap_check_header()
256 	amt_read = fread(((char *)&hdr) + sizeof hdr.magic, 1,  in pcap_check_header()
257 	    sizeof(hdr) - sizeof(hdr.magic), fp);  in pcap_check_header()
258 	if (amt_read != sizeof(hdr) - sizeof(hdr.magic)) {  in pcap_check_header()
265 			    sizeof(hdr), amt_read);  in pcap_check_header()
275 		hdr.version_major = SWAPSHORT(hdr.version_major);  in pcap_check_header()
276 		hdr.version_minor = SWAPSHORT(hdr.version_minor);  in pcap_check_header()
277 		hdr.thiszone = SWAPLONG(hdr.thiszone);  in pcap_check_header()
278 		hdr.sigfigs = SWAPLONG(hdr.sigfigs);  in pcap_check_header()
279 		hdr.snaplen = SWAPLONG(hdr.snaplen);  in pcap_check_header()
280 		hdr.linktype = SWAPLONG(hdr.linktype);  in pcap_check_header()
283 	if (hdr.version_major < PCAP_VERSION_MAJOR) {  in pcap_check_header()
294 	if (! ((hdr.version_major == PCAP_VERSION_MAJOR &&  in pcap_check_header()
295 		hdr.version_minor <= PCAP_VERSION_MINOR) ||  in pcap_check_header()
296 	       (hdr.version_major == 543 &&  in pcap_check_header()
297 		hdr.version_minor == 0))) {  in pcap_check_header()
300 			 hdr.version_major, hdr.version_minor);  in pcap_check_header()
308 	if (LT_RESERVED1(hdr.linktype) != 0) {  in pcap_check_header()
311 			 LT_RESERVED1(hdr.linktype));  in pcap_check_header()
327 	p->version_major = hdr.version_major;  in pcap_check_header()
328 	p->version_minor = hdr.version_minor;  in pcap_check_header()
329 	p->linktype = linktype_to_dlt(LT_LINKTYPE(hdr.linktype));  in pcap_check_header()
330 	p->linktype_ext = LT_LINKTYPE_EXT(hdr.linktype);  in pcap_check_header()
331 	p->snapshot = pcapint_adjust_snapshot(p->linktype, hdr.snaplen);  in pcap_check_header()
397 	switch (hdr.version_major) {  in pcap_check_header()
400 		if (hdr.version_minor < 3)  in pcap_check_header()
402 		else if (hdr.version_minor == 3)  in pcap_check_header()
518 pcap_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char **data)  in pcap_next_packet()  argument
553 		hdr->caplen = SWAPLONG(sf_hdr.caplen);  in pcap_next_packet()
554 		hdr->len = SWAPLONG(sf_hdr.len);  in pcap_next_packet()
555 		hdr->ts.tv_sec = SWAPLONG(sf_hdr.ts.tv_sec);  in pcap_next_packet()
556 		hdr->ts.tv_usec = SWAPLONG(sf_hdr.ts.tv_usec);  in pcap_next_packet()
558 		hdr->caplen = sf_hdr.caplen;  in pcap_next_packet()
559 		hdr->len = sf_hdr.len;  in pcap_next_packet()
560 		hdr->ts.tv_sec = sf_hdr.ts.tv_sec;  in pcap_next_packet()
561 		hdr->ts.tv_usec = sf_hdr.ts.tv_usec;  in pcap_next_packet()
577 		hdr->ts.tv_usec = hdr->ts.tv_usec * 1000;  in pcap_next_packet()
585 		hdr->ts.tv_usec = hdr->ts.tv_usec / 1000;  in pcap_next_packet()
596 		if (hdr->caplen <= hdr->len) {  in pcap_next_packet()
606 		t = hdr->caplen;  in pcap_next_packet()
607 		hdr->caplen = hdr->len;  in pcap_next_packet()
608 		hdr->len = t;  in pcap_next_packet()
615 	if (hdr->caplen > max_snaplen_for_dlt(p->linktype)) {  in pcap_next_packet()
624 		if (hdr->caplen > (bpf_u_int32)p->snapshot) {  in pcap_next_packet()
627 			    "snaplen of %d", hdr->caplen, p->snapshot);  in pcap_next_packet()
631 			    "maximum of %u", hdr->caplen,  in pcap_next_packet()
637 	if (hdr->caplen > (bpf_u_int32)p->snapshot) {  in pcap_next_packet()
676 		if (hdr->caplen > p->bufsize) {  in pcap_next_packet()
711 		bytes_to_discard = hdr->caplen - p->snapshot;  in pcap_next_packet()
727 					    hdr->caplen, bytes_read);  in pcap_next_packet()
738 		hdr->caplen = p->snapshot;  in pcap_next_packet()
743 		if (hdr->caplen > p->bufsize) {  in pcap_next_packet()
750 			new_bufsize = hdr->caplen;  in pcap_next_packet()
770 		amt_read = fread(p->buffer, 1, hdr->caplen, fp);  in pcap_next_packet()
771 		if (amt_read != hdr->caplen) {  in pcap_next_packet()
779 				    hdr->caplen, amt_read);  in pcap_next_packet()
786 	pcapint_post_process(p->linktype, p->swapped, hdr, *data);  in pcap_next_packet()
794 	struct pcap_file_header hdr;  in sf_write_header()  local
796 …hdr.magic = p->opt.tstamp_precision == PCAP_TSTAMP_PRECISION_NANO ? NSEC_TCPDUMP_MAGIC : TCPDUMP_M…  in sf_write_header()
797 	hdr.version_major = PCAP_VERSION_MAJOR;  in sf_write_header()
798 	hdr.version_minor = PCAP_VERSION_MINOR;  in sf_write_header()
805 	hdr.thiszone = 0;  in sf_write_header()
806 	hdr.sigfigs = 0;  in sf_write_header()
807 	hdr.snaplen = snaplen;  in sf_write_header()
808 	hdr.linktype = linktype;  in sf_write_header()
810 	if (fwrite((char *)&hdr, sizeof(hdr), 1, fp) != 1)  in sf_write_header()