diff options
Diffstat (limited to 'contrib/libpcap/pcap.c')
| -rw-r--r-- | contrib/libpcap/pcap.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/contrib/libpcap/pcap.c b/contrib/libpcap/pcap.c index 0822e1a..1a3c6b8 100644 --- a/contrib/libpcap/pcap.c +++ b/contrib/libpcap/pcap.c @@ -44,6 +44,7 @@ static const char rcsid[] _U_ = #include <pcap-stdinc.h> #else /* WIN32 */ #include <sys/types.h> +#include <sys/mman.h> #endif /* WIN32 */ #include <stdio.h> @@ -738,6 +739,24 @@ pcap_stats_dead(pcap_t *p, struct pcap_stat *ps _U_) void pcap_close_common(pcap_t *p) { +#ifdef BIOCSETBUFMODE + /* + * Check to see if this pcap instance was using the zerocopy buffer + * mode. If it was, delete the mappings. Note that p->buffer + * gets initialized to one of the mmaped regions in this case, so + * do not try and free it directly. + * + * If the regular buffer mode was selected, then it is safe to free + * this memory. + */ + if (p->zerocopy) { + if (p->zbuf1 != MAP_FAILED && p->zbuf1 != NULL) + munmap(p->zbuf1, p->zbufsize); + if (p->zbuf2 != MAP_FAILED && p->zbuf2 != NULL) + munmap(p->zbuf2, p->zbufsize); + p->buffer = NULL; + } else +#endif if (p->buffer != NULL) free(p->buffer); #if !defined(WIN32) && !defined(MSDOS) |
