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Add the libpcap merge from r17349 to NMAP_MODIFICATIONS.

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david
2010-04-19 19:39:04 +00:00
parent dedbb7f6ee
commit 89ea71e792
1 changed files with 102 additions and 0 deletions
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102
libpcap/NMAP_MODIFICATIONS
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@@ -180,4 +180,106 @@ o The following patch removes some code that apparently causes libpcap
}
#endif /* HAVE_SYS_BUFMOD_H */
o Merged commit 43acbb77a8e0b3346b574b3e28793de2d6985e69 from
git://bpf.tcpdump.org/libpcap, whose log message is "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)."
Index: configure.in
===================================================================
--- configure.in (revision 17348)
+++ configure.in (revision 17349)
@@ -381,6 +381,19 @@
[define if the system supports zerocopy BPF])
],
AC_MSG_RESULT(no))
+
+ #
+ # Check whether we have struct BPF_TIMEVAL.
+ #
+ AC_CHECK_TYPES(struct BPF_TIMEVAL,,,
+ [
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#ifdef HAVE_SYS_IOCCOM_H
+#include <sys/ioccom.h>
+#endif
+#include <net/bpf.h>
+ ])
;;
dag)
Index: config.h.in
===================================================================
--- config.h.in (revision 17348)
+++ config.h.in (revision 17349)
@@ -128,6 +128,9 @@
/* Define to 1 if you have the `strlcpy' function. */
#undef HAVE_STRLCPY
+/* Define to 1 if the system has the type `struct BPF_TIMEVAL'. */
+#undef HAVE_STRUCT_BPF_TIMEVAL
+
/* Define to 1 if the system has the type `struct ether_addr'. */
#undef HAVE_STRUCT_ETHER_ADDR
Index: pcap-bpf.c
===================================================================
--- pcap-bpf.c (revision 17348)
+++ pcap-bpf.c (revision 17349)
@@ -1859,16 +1859,45 @@
* XXX - is this seconds/nanoseconds in AIX?
* (Treating it as such doesn't fix the timeout
* problem described below.)
+ *
+ * XXX - Mac OS X 10.6 mishandles BIOCSRTIMEOUT in
+ * 64-bit userland - it takes, as an argument, a
+ * "struct BPF_TIMEVAL", which has 32-bit tv_sec
+ * and tv_usec, rather than a "struct timeval".
+ *
+ * If this platform defines "struct BPF_TIMEVAL",
+ * we check whether the structure size in BIOCSRTIMEOUT
+ * is that of a "struct timeval" and, if not, we use
+ * a "struct BPF_TIMEVAL" rather than a "struct timeval".
+ * (That way, if the bug is fixed in a future release,
+ * we will still do the right thing.)
*/
struct timeval to;
- to.tv_sec = p->md.timeout / 1000;
- to.tv_usec = (p->md.timeout * 1000) % 1000000;
- if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&to) < 0) {
- snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "BIOCSRTIMEOUT: %s",
- pcap_strerror(errno));
- status = PCAP_ERROR;
- goto bad;
+#ifdef HAVE_STRUCT_BPF_TIMEVAL
+ struct BPF_TIMEVAL bpf_to;
+
+ if (IOCPARM_LEN(BIOCSRTIMEOUT) != sizeof(struct timeval)) {
+ bpf_to.tv_sec = p->md.timeout / 1000;
+ bpf_to.tv_usec = (p->md.timeout * 1000) % 1000000;
+ if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&bpf_to) < 0) {
+ snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
+ "BIOCSRTIMEOUT: %s", pcap_strerror(errno));
+ status = PCAP_ERROR;
+ goto bad;
+ }
+ } else {
+#endif
+ to.tv_sec = p->md.timeout / 1000;
+ to.tv_usec = (p->md.timeout * 1000) % 1000000;
+ if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&to) < 0) {
+ snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
+ "BIOCSRTIMEOUT: %s", pcap_strerror(errno));
+ status = PCAP_ERROR;
+ goto bad;
+ }
+#ifdef HAVE_STRUCT_BPF_TIMEVAL
}
+#endif
}
#ifdef _AIX
o Regenerated configure.