# what libraries we'd need to link libpcap with, if any.
#
set(PCAP_LINK_LIBRARIES "")
- if(EXISTS /dev/bpf)
+
+ #
+ # Check for a bunch of headers for various packet capture mechanisms.
+ #
+ check_include_file(net/bpf.h HAVE_NET_BPF_H)
+ check_include_file(net/pfilt.h HAVE_NET_PFILT_H)
+ check_include_file(net/enet.h HAVE_NET_ENET_H)
+ check_include_file(net/nit.h HAVE_NET_NIT_H)
+ check_include_file(sys/net/nit.h HAVE_SYS_NET_NIT_H)
+ check_include_file(linux/socket.h HAVE_LINUX_SOCKET_H)
+ check_include_file(net/raw.h HAVE_NET_RAW_H)
+ check_include_file(sys/dlpi.h HAVE_SYS_DLPI_H)
+
+ if(HAVE_NET_BPF_H)
#
- # Cloning BPF device.
+ # BPF.
+ # Check this before DLPI, so that we pick BPF on
+ # Solaris 11 and later.
#
set(PCAP_TYPE bpf)
- set(HAVE_CLONING_BPF TRUE)
- elseif(EXISTS /dev/bpf0)
- set(PCAP_TYPE bpf)
- elseif(EXISTS /usr/include/net/pfilt.h)
+ elseif(HAVE_NET_PFILT_H)
#
# DEC OSF/1, Digital UNIX, Tru64 UNIX
#
set(PCAP_TYPE pf)
- elseif(EXISTS /dev/enet)
+ elseif(HAVE_NET_ENET_H)
+ #
+ # Stanford Enetfilter.
+ #
set(PCAP_TYPE enet)
- elseif(EXISTS /dev/nit)
+ elseif(HAVE_NET_NIT_H)
+ #
+ # SunOS 4.x STREAMS NIT.
+ #
set(PCAP_TYPE snit)
- elseif(EXISTS /usr/include/sys/net/nit.h)
+ elseif(HAVE_SYS_NET_NIT_H)
+ #
+ # Pre-SunOS 4.x non-STREAMS NIT.
+ #
set(PCAP_TYPE nit)
- elseif(EXISTS /usr/include/linux/socket.h)
+ elseif(HAVE_LINUX_SOCKET_H)
+ #
+ # No prizes for guessing this one.
+ #
set(PCAP_TYPE linux)
- elseif(EXISTS /usr/include/net/raw.h)
+ elseif(HAVE_NET_RAW_H)
+ #
+ # IRIX snoop.
+ #
set(PCAP_TYPE snoop)
- elseif(EXISTS /usr/include/odmi.h)
- #
- # On AIX, the BPF devices might not yet be present - they're
- # created the first time libpcap runs after booting.
- # We check for odmi.h instead.
- #
- set(PCAP_TYPE bpf)
- elseif(/usr/include/sys/dlpi.h)
+ elseif(HAVE_SYS_DLPI_H)
+ #
+ # DLPI on pre-Solaris 11 SunOS 5, HP-UX, possibly others.
+ #
set(PCAP_TYPE dlpi)
else()
+ #
+ # Nothing we support.
+ #
set(PCAP_TYPE null)
endif()
endif(WIN32)
/* Enable optimizer debugging */
#undef BDEBUG
-/* define if you have a cloning BPF device */
-#undef HAVE_CLONING_BPF
-
/* define if you have the DAG API */
#undef HAVE_DAG_API
/* Define to 1 if you have the <linux/net_tstamp.h> header file. */
#undef HAVE_LINUX_NET_TSTAMP_H
+/* Define to 1 if you have the <linux/socket.h> header file. */
+#undef HAVE_LINUX_SOCKET_H
+
/* Define to 1 if you have the <linux/sockios.h> header file. */
#undef HAVE_LINUX_SOCKIOS_H
/* Define to 1 if you have the <netpacket/packet.h> header file. */
#undef HAVE_NETPACKET_PACKET_H
+/* Define to 1 if you have the <net/bpf.h> header file. */
+#undef HAVE_NET_BPF_H
+
+/* Define to 1 if you have the <net/enet.h> header file. */
+#undef HAVE_NET_ENET_H
+
/* Define to 1 if you have the <net/if_media.h> header file. */
#undef HAVE_NET_IF_MEDIA_H
+/* Define to 1 if you have the <net/nit.h> header file. */
+#undef HAVE_NET_NIT_H
+
+/* Define to 1 if you have the <net/pfilt.h> header file. */
+#undef HAVE_NET_PFILT_H
+
/* Define to 1 if you have the <net/pfvar.h> header file. */
#undef HAVE_NET_PFVAR_H
+/* Define to 1 if you have the <net/raw.h> header file. */
+#undef HAVE_NET_RAW_H
+
/* if there's an os_proto.h for this platform, to use additional prototypes */
#undef HAVE_OS_PROTO_H
/* Define to 1 if you have the <sys/dlpi_ext.h> header file. */
#undef HAVE_SYS_DLPI_EXT_H
+/* Define to 1 if you have the <sys/dlpi.h> header file. */
+#undef HAVE_SYS_DLPI_H
+
/* Define to 1 if you have the <sys/ioccom.h> header file. */
#undef HAVE_SYS_IOCCOM_H
+/* Define to 1 if you have the <sys/net/nit.h> header file. */
+#undef HAVE_SYS_NET_NIT_H
+
/* Define to 1 if you have the <sys/sockio.h> header file. */
#undef HAVE_SYS_SOCKIO_H
withval=$with_pcap;
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking packet capture type" >&5
-$as_echo_n "checking packet capture type... " >&6; }
if test ! -z "$with_pcap" ; then
V_PCAP="$withval"
-elif test -r /dev/bpf -o -h /dev/bpf ; then
+else
#
- # Cloning BPF device.
+ # Check for a bunch of headers for various packet
+ # capture mechanisms.
#
- V_PCAP=bpf
+ for ac_header in net/bpf.h net/pfilt.h net/enet.h
+do :
+ as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+ cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
-$as_echo "#define HAVE_CLONING_BPF 1" >>confdefs.h
+fi
+done
- #
- # We have BPF, so build valgrindtest with "make test".
- #
- VALGRINDTEST=valgrindtest
-elif test -r /dev/bpf0 ; then
- V_PCAP=bpf
+ for ac_header in net/nit.h sys/net/nit.h
+do :
+ as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+ cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
- #
- # We have BPF, so build valgrindtest with "make test".
- #
- VALGRINDTEST=valgrindtest
-elif test -r /usr/include/net/pfilt.h ; then
- V_PCAP=pf
-elif test -r /dev/enet ; then
- V_PCAP=enet
-elif test -r /dev/nit ; then
- V_PCAP=snit
-elif test -r /usr/include/sys/net/nit.h ; then
- V_PCAP=nit
-elif test -r /usr/include/linux/socket.h ; then
- V_PCAP=linux
+fi
- #
- # XXX - this won't work with older kernels that have SOCK_PACKET
- # sockets but not PF_PACKET sockets.
- #
- VALGRINDTEST=valgrindtest
-elif test -r /usr/include/net/raw.h ; then
- V_PCAP=snoop
-elif test -r /usr/include/odmi.h ; then
- #
- # On AIX, the BPF devices might not yet be present - they're
- # created the first time libpcap runs after booting.
- # We check for odmi.h instead.
- #
- V_PCAP=bpf
-elif test -c /dev/bpf0 ; then # check again in case not readable
- V_PCAP=bpf
+done
- #
- # We have BPF, so build valgrindtest with "make test".
- #
- VALGRINDTEST=valgrindtest
-elif test -r /usr/include/sys/dlpi.h ; then
- V_PCAP=dlpi
-elif test -c /dev/enet ; then # check again in case not readable
- V_PCAP=enet
-elif test -c /dev/nit ; then # check again in case not readable
- V_PCAP=snit
-else
- V_PCAP=null
+ for ac_header in linux/socket.h net/raw.h sys/dlpi.h
+do :
+ as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+ cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+ if test "$ac_cv_header_net_bpf_h" = yes; then
+ #
+ # BPF.
+ # Check this before DLPI, so that we pick BPF on
+ # Solaris 11 and later.
+ #
+ V_PCAP=bpf
+
+ #
+ # We have BPF, so build valgrindtest with "make test"
+ # on macOS, FreeBSD, and Linux (add your OS once
+ # there's a valgrind for it).
+ #
+ case "$host_os" in
+
+ freebsd*|darwin*|linux*)
+ VALGRINDTEST=valgrindtest
+ ;;
+ esac
+ elif test "$ac_cv_header_net_pfilt_h" = yes; then
+ V_PCAP=pf
+ elif test "$ac_cv_header_net_enet_h" = yes; then
+ V_PCAP=enet
+ elif test "$ac_header_net_nit_h" = yes; then
+ V_PCAP=snit
+ elif test "$ac_header_sys_net_nit_h" = yes; then
+ V_PCAP=nit
+ elif test "$ac_header_linux_socket_h" = yes; then
+ V_PCAP=linux
+
+ #
+ # XXX - this won't work with older kernels that have
+ # SOCK_PACKET sockets but not PF_PACKET sockets.
+ #
+ VALGRINDTEST=valgrindtest
+ elif test "$ac_header_net_raw_h" = yes; then
+ V_PCAP=snoop
+ elif test "$ac_header_sys_dlpi_h" = yes; then
+ V_PCAP=dlpi
+ else
+ V_PCAP=null
+ fi
fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking packet capture type" >&5
+$as_echo_n "checking packet capture type... " >&6; }
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $V_PCAP" >&5
$as_echo "$V_PCAP" >&6; }
fi
AC_ARG_WITH(pcap,
AC_HELP_STRING([--with-pcap=TYPE],[use packet capture TYPE]))
-AC_MSG_CHECKING(packet capture type)
if test ! -z "$with_pcap" ; then
V_PCAP="$withval"
-elif test -r /dev/bpf -o -h /dev/bpf ; then
+else
#
- # Cloning BPF device.
+ # Check for a bunch of headers for various packet
+ # capture mechanisms.
#
- V_PCAP=bpf
- AC_DEFINE(HAVE_CLONING_BPF,1,[define if you have a cloning BPF device])
+ AC_CHECK_HEADERS(net/bpf.h net/pfilt.h net/enet.h)
+ AC_CHECK_HEADERS(net/nit.h sys/net/nit.h)
+ AC_CHECK_HEADERS(linux/socket.h net/raw.h sys/dlpi.h)
- #
- # We have BPF, so build valgrindtest with "make test".
- #
- VALGRINDTEST=valgrindtest
-elif test -r /dev/bpf0 ; then
- V_PCAP=bpf
+ if test "$ac_cv_header_net_bpf_h" = yes; then
+ #
+ # BPF.
+ # Check this before DLPI, so that we pick BPF on
+ # Solaris 11 and later.
+ #
+ V_PCAP=bpf
- #
- # We have BPF, so build valgrindtest with "make test".
- #
- VALGRINDTEST=valgrindtest
-elif test -r /usr/include/net/pfilt.h ; then
- V_PCAP=pf
-elif test -r /dev/enet ; then
- V_PCAP=enet
-elif test -r /dev/nit ; then
- V_PCAP=snit
-elif test -r /usr/include/sys/net/nit.h ; then
- V_PCAP=nit
-elif test -r /usr/include/linux/socket.h ; then
- V_PCAP=linux
+ #
+ # We have BPF, so build valgrindtest with "make test"
+ # on macOS, FreeBSD, and Linux (add your OS once
+ # there's a valgrind for it).
+ #
+ case "$host_os" in
- #
- # XXX - this won't work with older kernels that have SOCK_PACKET
- # sockets but not PF_PACKET sockets.
- #
- VALGRINDTEST=valgrindtest
-elif test -r /usr/include/net/raw.h ; then
- V_PCAP=snoop
-elif test -r /usr/include/odmi.h ; then
- #
- # On AIX, the BPF devices might not yet be present - they're
- # created the first time libpcap runs after booting.
- # We check for odmi.h instead.
- #
- V_PCAP=bpf
-elif test -c /dev/bpf0 ; then # check again in case not readable
- V_PCAP=bpf
+ freebsd*|darwin*|linux*)
+ VALGRINDTEST=valgrindtest
+ ;;
+ esac
+ elif test "$ac_cv_header_net_pfilt_h" = yes; then
+ #
+ # DEC OSF/1, Digital UNIX, Tru64 UNIX
+ #
+ V_PCAP=pf
+ elif test "$ac_cv_header_net_enet_h" = yes; then
+ #
+ # Stanford Enetfilter.
+ #
+ V_PCAP=enet
+ elif test "$ac_header_net_nit_h" = yes; then
+ #
+ # SunOS 4.x STREAMS NIT.
+ #
+ V_PCAP=snit
+ elif test "$ac_header_sys_net_nit_h" = yes; then
+ #
+ # Pre-SunOS 4.x non-STREAMS NIT.
+ #
+ V_PCAP=nit
+ elif test "$ac_header_linux_socket_h" = yes; then
+ #
+ # No prizes for guessing this one.
+ #
+ V_PCAP=linux
- #
- # We have BPF, so build valgrindtest with "make test".
- #
- VALGRINDTEST=valgrindtest
-elif test -r /usr/include/sys/dlpi.h ; then
- V_PCAP=dlpi
-elif test -c /dev/enet ; then # check again in case not readable
- V_PCAP=enet
-elif test -c /dev/nit ; then # check again in case not readable
- V_PCAP=snit
-else
- V_PCAP=null
+ #
+ # XXX - this won't work with older kernels that have
+ # SOCK_PACKET sockets but not PF_PACKET sockets.
+ #
+ VALGRINDTEST=valgrindtest
+ elif test "$ac_header_net_raw_h" = yes; then
+ #
+ # IRIX snoop.
+ #
+ V_PCAP=snoop
+ elif test "$ac_header_sys_dlpi_h" = yes; then
+ #
+ # DLPI on pre-Solaris 11 SunOS 5, HP-UX, possibly others.
+ #
+ V_PCAP=dlpi
+ else
+ #
+ # Nothing we support.
+ #
+ V_PCAP=null
+ fi
fi
+AC_MSG_CHECKING(packet capture type)
AC_MSG_RESULT($V_PCAP)
AC_SUBST(VALGRINDTEST)
bpf_open(char *errbuf)
{
int fd;
-#ifdef HAVE_CLONING_BPF
- static const char device[] = "/dev/bpf";
-#else
+ static const char cloning_device[] = "/dev/bpf";
int n = 0;
char device[sizeof "/dev/bpf0000000000"];
-#endif
+ static int no_cloning_bpf = 0;
#ifdef _AIX
/*
return (PCAP_ERROR);
#endif
-#ifdef HAVE_CLONING_BPF
- if ((fd = open(device, O_RDWR)) == -1 &&
- (errno != EACCES || (fd = open(device, O_RDONLY)) == -1)) {
- if (errno == EACCES)
- fd = PCAP_ERROR_PERM_DENIED;
- else
- fd = PCAP_ERROR;
- pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
- "(cannot open device) %s: %s", device, pcap_strerror(errno));
+ /*
+ * First, unless we've already tried opening /dev/bpf and
+ * gotten ENOENT, try opening /dev/bpf.
+ * If it fails with ENOENT, remember that, so we don't try
+ * again, and try /dev/bpfN.
+ */
+ if (!no_cloning_bpf &&
+ (fd = open(cloning_device, O_RDWR)) == -1 &&
+ ((errno != EACCES && errno != ENOENT) ||
+ (fd = open(cloning_device, O_RDONLY)) == -1)) {
+ if (errno != ENOENT) {
+ if (errno == EACCES)
+ fd = PCAP_ERROR_PERM_DENIED;
+ else
+ fd = PCAP_ERROR;
+ pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "(cannot open device) %s: %s", device,
+ pcap_strerror(errno));
+ return (fd);
+ }
+ no_cloning_bpf = 1;
}
-#else
+
/*
- * Go through all the minors and find one that isn't in use.
+ * Go through all the /dev/bpfN minors and find one that isn't
+ * in use.
*/
do {
(void)pcap_snprintf(device, sizeof(device), "/dev/bpf%d", n++);
break;
}
}
-#endif
return (fd);
}
projects / libpcap / commitdiff
