123 static int pcap_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char **datap);
154 	struct pcap_file_header hdr;  in pcap_check_header()  local
183 	hdr.magic = magic;  in pcap_check_header()
184 	amt_read = fread(((char *)&hdr) + sizeof hdr.magic, 1,  in pcap_check_header()
185 	    sizeof(hdr) - sizeof(hdr.magic), fp);  in pcap_check_header()
186 	if (amt_read != sizeof(hdr) - sizeof(hdr.magic)) {  in pcap_check_header()
194 			    (unsigned long)sizeof(hdr),  in pcap_check_header()
205 		hdr.version_major = SWAPSHORT(hdr.version_major);  in pcap_check_header()
206 		hdr.version_minor = SWAPSHORT(hdr.version_minor);  in pcap_check_header()
207 		hdr.thiszone = SWAPLONG(hdr.thiszone);  in pcap_check_header()
208 		hdr.sigfigs = SWAPLONG(hdr.sigfigs);  in pcap_check_header()
209 		hdr.snaplen = SWAPLONG(hdr.snaplen);  in pcap_check_header()
210 		hdr.linktype = SWAPLONG(hdr.linktype);  in pcap_check_header()
213 	if (hdr.version_major < PCAP_VERSION_MAJOR) {  in pcap_check_header()
224 	if (! ((hdr.version_major == PCAP_VERSION_MAJOR &&  in pcap_check_header()
225 		hdr.version_minor <= PCAP_VERSION_MINOR) ||  in pcap_check_header()
226 	       (hdr.version_major == 543 &&  in pcap_check_header()
227 		hdr.version_minor == 0))) {  in pcap_check_header()
230 			 hdr.version_major, hdr.version_minor);  in pcap_check_header()
235 	if (hdr.snaplen > MAXIMUM_SNAPLEN) {  in pcap_check_header()
238 			 "maximum of %u", hdr.snaplen, MAXIMUM_SNAPLEN);  in pcap_check_header()
254 	p->version_major = hdr.version_major;  in pcap_check_header()
255 	p->version_minor = hdr.version_minor;  in pcap_check_header()
256 	p->tzoff = hdr.thiszone;  in pcap_check_header()
257 	p->snapshot = hdr.snaplen;  in pcap_check_header()
258 	p->linktype = linktype_to_dlt(LT_LINKTYPE(hdr.linktype));  in pcap_check_header()
259 	p->linktype_ext = LT_LINKTYPE_EXT(hdr.linktype);  in pcap_check_header()
325 	switch (hdr.version_major) {  in pcap_check_header()
328 		if (hdr.version_minor < 3)  in pcap_check_header()
330 		else if (hdr.version_minor == 3)  in pcap_check_header()
420 pcap_next_packet(pcap_t *p, struct pcap_pkthdr *hdr, u_char **data)  in pcap_next_packet()  argument
457 		hdr->caplen = SWAPLONG(sf_hdr.caplen);  in pcap_next_packet()
458 		hdr->len = SWAPLONG(sf_hdr.len);  in pcap_next_packet()
459 		hdr->ts.tv_sec = SWAPLONG(sf_hdr.ts.tv_sec);  in pcap_next_packet()
460 		hdr->ts.tv_usec = SWAPLONG(sf_hdr.ts.tv_usec);  in pcap_next_packet()
462 		hdr->caplen = sf_hdr.caplen;  in pcap_next_packet()
463 		hdr->len = sf_hdr.len;  in pcap_next_packet()
464 		hdr->ts.tv_sec = sf_hdr.ts.tv_sec;  in pcap_next_packet()
465 		hdr->ts.tv_usec = sf_hdr.ts.tv_usec;  in pcap_next_packet()
481 		hdr->ts.tv_usec = hdr->ts.tv_usec * 1000;  in pcap_next_packet()
489 		hdr->ts.tv_usec = hdr->ts.tv_usec / 1000;  in pcap_next_packet()
500 		if (hdr->caplen <= hdr->len) {  in pcap_next_packet()
510 		t = hdr->caplen;  in pcap_next_packet()
511 		hdr->caplen = hdr->len;  in pcap_next_packet()
512 		hdr->len = t;  in pcap_next_packet()
516 	if (hdr->caplen > p->bufsize) {  in pcap_next_packet()
529 		if (hdr->caplen > MAXIMUM_SNAPLEN) {  in pcap_next_packet()
532 			    "maximum of %u", hdr->caplen, MAXIMUM_SNAPLEN);  in pcap_next_packet()
561 				    hdr->caplen, (unsigned long)amt_read);  in pcap_next_packet()
569 		bytes_to_discard = hdr->caplen - p->bufsize;  in pcap_next_packet()
585 					    hdr->caplen, (unsigned long)bytes_read);  in pcap_next_packet()
596 		hdr->caplen = p->bufsize;  in pcap_next_packet()
599 		amt_read = fread(p->buffer, 1, hdr->caplen, fp);  in pcap_next_packet()
600 		if (amt_read != hdr->caplen) {  in pcap_next_packet()
608 				    hdr->caplen, (unsigned long)amt_read);  in pcap_next_packet()
616 		swap_pseudo_headers(p->linktype, hdr, *data);  in pcap_next_packet()
624 	struct pcap_file_header hdr;  in sf_write_header()  local
626 …hdr.magic = p->opt.tstamp_precision == PCAP_TSTAMP_PRECISION_NANO ? NSEC_TCPDUMP_MAGIC : TCPDUMP_M…  in sf_write_header()
627 	hdr.version_major = PCAP_VERSION_MAJOR;  in sf_write_header()
628 	hdr.version_minor = PCAP_VERSION_MINOR;  in sf_write_header()
630 	hdr.thiszone = thiszone;  in sf_write_header()
631 	hdr.snaplen = snaplen;  in sf_write_header()
632 	hdr.sigfigs = 0;  in sf_write_header()
633 	hdr.linktype = linktype;  in sf_write_header()
635 	if (fwrite((char *)&hdr, sizeof(hdr), 1, fp) != 1)  in sf_write_header()