Work around an annoying Snow Leopard BPF bug that causes sub-second
timeouts not to work in 64-bit userland code (Snow Leopard's GCC builds 64-bit by default on 64-bit machines).
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@ -127,6 +127,9 @@
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/* Define to 1 if you have the `strlcpy' function. */
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#undef HAVE_STRLCPY
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/* Define to 1 if the system has the type `struct BPF_TIMEVAL'. */
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#undef HAVE_STRUCT_BPF_TIMEVAL
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/* Define to 1 if the system has the type `struct ether_addr'. */
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#undef HAVE_STRUCT_ETHER_ADDR
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@ -5144,13 +5144,11 @@ _ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#include <sys/types.h> /* for off_t */
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#include <stdio.h>
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int
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main ()
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{
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int (*fp) (FILE *, off_t, int) = fseeko;
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return fseeko (stdin, 0, 0) && fp (stdin, 0, 0);
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return fseeko (stdin, 0, 0) && (fseeko) (stdin, 0, 0);
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;
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return 0;
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}
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@ -5190,13 +5188,11 @@ cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#define _LARGEFILE_SOURCE 1
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#include <sys/types.h> /* for off_t */
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#include <stdio.h>
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int
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main ()
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{
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int (*fp) (FILE *, off_t, int) = fseeko;
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return fseeko (stdin, 0, 0) && fp (stdin, 0, 0);
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return fseeko (stdin, 0, 0) && (fseeko) (stdin, 0, 0);
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;
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return 0;
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}
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@ -7697,6 +7693,80 @@ echo "${ECHO_T}no" >&6; }
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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#
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# Check whether we have struct BPF_TIMEVAL.
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#
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{ echo "$as_me:$LINENO: checking for struct BPF_TIMEVAL" >&5
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echo $ECHO_N "checking for struct BPF_TIMEVAL... $ECHO_C" >&6; }
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if test "${ac_cv_type_struct_BPF_TIMEVAL+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#ifdef HAVE_SYS_IOCCOM_H
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#include <sys/ioccom.h>
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#endif
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#include <net/bpf.h>
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typedef struct BPF_TIMEVAL ac__type_new_;
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int
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main ()
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{
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if ((ac__type_new_ *) 0)
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return 0;
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if (sizeof (ac__type_new_))
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return 0;
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (ac_try="$ac_compile"
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case "(($ac_try" in
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*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
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*) ac_try_echo=$ac_try;;
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esac
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eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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(eval "$ac_compile") 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } && {
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test -z "$ac_c_werror_flag" ||
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test ! -s conftest.err
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} && test -s conftest.$ac_objext; then
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ac_cv_type_struct_BPF_TIMEVAL=yes
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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ac_cv_type_struct_BPF_TIMEVAL=no
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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{ echo "$as_me:$LINENO: result: $ac_cv_type_struct_BPF_TIMEVAL" >&5
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echo "${ECHO_T}$ac_cv_type_struct_BPF_TIMEVAL" >&6; }
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if test $ac_cv_type_struct_BPF_TIMEVAL = yes; then
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cat >>confdefs.h <<_ACEOF
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#define HAVE_STRUCT_BPF_TIMEVAL 1
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_ACEOF
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fi
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;;
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dag)
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13
configure.in
13
configure.in
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@ -474,6 +474,19 @@ bpf)
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[define if the system supports zerocopy BPF])
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],
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AC_MSG_RESULT(no))
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#
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# Check whether we have struct BPF_TIMEVAL.
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#
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AC_CHECK_TYPES(struct BPF_TIMEVAL,,,
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[
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#ifdef HAVE_SYS_IOCCOM_H
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#include <sys/ioccom.h>
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#endif
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#include <net/bpf.h>
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])
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;;
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dag)
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39
pcap-bpf.c
39
pcap-bpf.c
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@ -1914,16 +1914,45 @@ pcap_activate_bpf(pcap_t *p)
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* XXX - is this seconds/nanoseconds in AIX?
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* (Treating it as such doesn't fix the timeout
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* problem described below.)
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*
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* XXX - Mac OS X 10.6 mishandles BIOCSRTIMEOUT in
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* 64-bit userland - it takes, as an argument, a
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* "struct BPF_TIMEVAL", which has 32-bit tv_sec
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* and tv_usec, rather than a "struct timeval".
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*
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* If this platform defines "struct BPF_TIMEVAL",
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* we check whether the structure size in BIOCSRTIMEOUT
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* is that of a "struct timeval" and, if not, we use
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* a "struct BPF_TIMEVAL" rather than a "struct timeval".
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* (That way, if the bug is fixed in a future release,
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* we will still do the right thing.)
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*/
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struct timeval to;
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to.tv_sec = p->md.timeout / 1000;
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to.tv_usec = (p->md.timeout * 1000) % 1000000;
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if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&to) < 0) {
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snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCSRTIMEOUT: %s",
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pcap_strerror(errno));
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#ifdef HAVE_STRUCT_BPF_TIMEVAL
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struct BPF_TIMEVAL bpf_to;
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if (IOCPARM_LEN(BIOCSRTIMEOUT) != sizeof(struct timeval)) {
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bpf_to.tv_sec = p->md.timeout / 1000;
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bpf_to.tv_usec = (p->md.timeout * 1000) % 1000000;
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if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&bpf_to) < 0) {
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snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
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"BIOCSRTIMEOUT: %s", pcap_strerror(errno));
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status = PCAP_ERROR;
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goto bad;
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}
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} else {
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#endif
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to.tv_sec = p->md.timeout / 1000;
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to.tv_usec = (p->md.timeout * 1000) % 1000000;
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if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&to) < 0) {
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snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
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"BIOCSRTIMEOUT: %s", pcap_strerror(errno));
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status = PCAP_ERROR;
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goto bad;
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}
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#ifdef HAVE_STRUCT_BPF_TIMEVAL
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}
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#endif
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}
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#ifdef _AIX
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