110 static int pcap_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char **datap);
141 	struct pcap_file_header hdr;  in pcap_check_header()  local
170 	hdr.magic = magic;  in pcap_check_header()
171 	amt_read = fread(((char *)&hdr) + sizeof hdr.magic, 1,  in pcap_check_header()
172 	    sizeof(hdr) - sizeof(hdr.magic), fp);  in pcap_check_header()
173 	if (amt_read != sizeof(hdr) - sizeof(hdr.magic)) {  in pcap_check_header()
180 			    (unsigned long)sizeof(hdr),  in pcap_check_header()
191 		hdr.version_major = SWAPSHORT(hdr.version_major);  in pcap_check_header()
192 		hdr.version_minor = SWAPSHORT(hdr.version_minor);  in pcap_check_header()
193 		hdr.thiszone = SWAPLONG(hdr.thiszone);  in pcap_check_header()
194 		hdr.sigfigs = SWAPLONG(hdr.sigfigs);  in pcap_check_header()
195 		hdr.snaplen = SWAPLONG(hdr.snaplen);  in pcap_check_header()
196 		hdr.linktype = SWAPLONG(hdr.linktype);  in pcap_check_header()
199 	if (hdr.version_major < PCAP_VERSION_MAJOR) {  in pcap_check_header()
210 	if (! ((hdr.version_major == PCAP_VERSION_MAJOR &&  in pcap_check_header()
211 		hdr.version_minor <= PCAP_VERSION_MINOR) ||  in pcap_check_header()
212 	       (hdr.version_major == 543 &&  in pcap_check_header()
213 		hdr.version_minor == 0))) {  in pcap_check_header()
216 			 hdr.version_major, hdr.version_minor);  in pcap_check_header()
232 	p->version_major = hdr.version_major;  in pcap_check_header()
233 	p->version_minor = hdr.version_minor;  in pcap_check_header()
234 	p->tzoff = hdr.thiszone;  in pcap_check_header()
235 	p->snapshot = hdr.snaplen;  in pcap_check_header()
245 		p->snapshot = max_snaplen_for_dlt(hdr.linktype);  in pcap_check_header()
247 	p->linktype = linktype_to_dlt(LT_LINKTYPE(hdr.linktype));  in pcap_check_header()
248 	p->linktype_ext = LT_LINKTYPE_EXT(hdr.linktype);  in pcap_check_header()
314 	switch (hdr.version_major) {  in pcap_check_header()
317 		if (hdr.version_minor < 3)  in pcap_check_header()
319 		else if (hdr.version_minor == 3)  in pcap_check_header()
429 pcap_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char **data)  in pcap_next_packet()  argument
465 		hdr->caplen = SWAPLONG(sf_hdr.caplen);  in pcap_next_packet()
466 		hdr->len = SWAPLONG(sf_hdr.len);  in pcap_next_packet()
467 		hdr->ts.tv_sec = SWAPLONG(sf_hdr.ts.tv_sec);  in pcap_next_packet()
468 		hdr->ts.tv_usec = SWAPLONG(sf_hdr.ts.tv_usec);  in pcap_next_packet()
470 		hdr->caplen = sf_hdr.caplen;  in pcap_next_packet()
471 		hdr->len = sf_hdr.len;  in pcap_next_packet()
472 		hdr->ts.tv_sec = sf_hdr.ts.tv_sec;  in pcap_next_packet()
473 		hdr->ts.tv_usec = sf_hdr.ts.tv_usec;  in pcap_next_packet()
489 		hdr->ts.tv_usec = hdr->ts.tv_usec * 1000;  in pcap_next_packet()
497 		hdr->ts.tv_usec = hdr->ts.tv_usec / 1000;  in pcap_next_packet()
508 		if (hdr->caplen <= hdr->len) {  in pcap_next_packet()
518 		t = hdr->caplen;  in pcap_next_packet()
519 		hdr->caplen = hdr->len;  in pcap_next_packet()
520 		hdr->len = t;  in pcap_next_packet()
527 	if (hdr->caplen > max_snaplen_for_dlt(p->linktype)) {  in pcap_next_packet()
536 		if (hdr->caplen > (bpf_u_int32)p->snapshot) {  in pcap_next_packet()
539 			    "snaplen of %d", hdr->caplen, p->snapshot);  in pcap_next_packet()
543 			    "maximum of %u", hdr->caplen,  in pcap_next_packet()
549 	if (hdr->caplen > (bpf_u_int32)p->snapshot) {  in pcap_next_packet()
588 		if (hdr->caplen > p->bufsize) {  in pcap_next_packet()
623 		bytes_to_discard = hdr->caplen - p->snapshot;  in pcap_next_packet()
639 					    hdr->caplen, (unsigned long)bytes_read);  in pcap_next_packet()
650 		hdr->caplen = p->snapshot;  in pcap_next_packet()
652 		if (hdr->caplen > p->bufsize) {  in pcap_next_packet()
659 			new_bufsize = hdr->caplen;  in pcap_next_packet()
679 		amt_read = fread(p->buffer, 1, hdr->caplen, fp);  in pcap_next_packet()
680 		if (amt_read != hdr->caplen) {  in pcap_next_packet()
688 				    hdr->caplen, (unsigned long)amt_read);  in pcap_next_packet()
696 		swap_pseudo_headers(p->linktype, hdr, *data);  in pcap_next_packet()
704 	struct pcap_file_header hdr;  in sf_write_header()  local
706 …hdr.magic = p->opt.tstamp_precision == PCAP_TSTAMP_PRECISION_NANO ? NSEC_TCPDUMP_MAGIC : TCPDUMP_M…  in sf_write_header()
707 	hdr.version_major = PCAP_VERSION_MAJOR;  in sf_write_header()
708 	hdr.version_minor = PCAP_VERSION_MINOR;  in sf_write_header()
710 	hdr.thiszone = thiszone;  in sf_write_header()
711 	hdr.snaplen = snaplen;  in sf_write_header()
712 	hdr.sigfigs = 0;  in sf_write_header()
713 	hdr.linktype = linktype;  in sf_write_header()
715 	if (fwrite((char *)&hdr, sizeof(hdr), 1, fp) != 1)  in sf_write_header()