on Solaris, it's a "gethostbyname() -ish function", and we'll find it
only when we're linking with whatever libraries are required for finding
those functions.
Get the AC_LBL_LIBRARY_NET macro from tcpdump; that macro works with
autoconf 2.5x, but the one here didn't.
and if including it declares ether_hostton(), and define
HAVE_DECL_ETHER_HOSTTON appropriately, and use that to determine whether
to define it ourselves, rather than having a set of OSes that don't need
it, as that set can change over time.
Make the default declaration of "ether_hostton()" declare its first
argument as "const char *", as that's what it's *supposed* to be
(although it's not declared as such in some OSes, so we still have to
cast a "const char *" when passed as the first argument).
UN*Xy-enough platform that the Makefile.in rules to generate "version.h"
work), and use the stuff from "version.h" iff HAVE_VERSION_H is defined,
so we can use it even with WinPcap.
supplying a non-stub version of "pcap_findalldevs()", as a list of
devices won't do any good for a capture program.
Don't bother checking for "ifaddrs.h" unless we have "getifaddrs()" -
and if we have "getifaddrs()" but don't have a usable "ifaddrs.h",
report an error, rather than leaving the error for the compile stage.
"snprintf()", include one in libpcap with the name "pcap_snprintf()", so
applications don't have to supply their own "snprintf()" on those
platforms in order to use libpcap.
where we wire in the idea that it can't handle unaligned accesses. (I
don't know why the test program doesn't work - but perhaps the test
program is the wrong answer anyway, as it doesn't work when
cross-compiling.)
AIX, we choose BPF, not DLPI, by default; we won't necessarily choose
BPF if no libpcap-based program has been run since booting, as libpcap
(both IBM's and, now, ours) create BPF devices and load the driver if
that hasn't already been done since booting).
configure script to think it's IRIX, so test for
"/usr/include/linux/socket.h" before testing for
"/usr/include/net/raw.h" (which is done before testing for
"/usr/include/sys/dlpi.h"; hopefully no future IRIX release, or future
release of Solaris/HP-UX/AIX/other OS that supports DLPI, will add
"/usr/include/linux/socket.h" as a "helpful" header file for Linux
compatibility).
source files, rather than having a pile of #ifdefs in "inet.c". Add
code to the configure script to determine which implementation to use on
the platform for which libpcap is being built.
Add a "pcap_findalldevs()" implementation for Solaris 8 and later that
handles IPv6 addresses.
section - the other section gets stuck in the middle of "main()", and,
although GCC lets you define functions inside functions, other C
compilers don't.
Pick a name more likely to be unique to use as the iterator variable in
AC_LBL_C_INLINE.
Make AC_LBL_C_INLINE print "no" rather than "not supported" if inline
isn't supported, to match what AC_C_INLINE does.
return a structure pointer. Check whether the C compiler can handle
inline functions that return a structure pointer, not whether they can
handle inline functions that return an int, as at least some versions of
autoconf's AC_C_INLINE do.
"getifaddrs()"), after processing the list returned by SIOCGIFCONF, scan
"/proc/net/dev" for interface names, and add to the list of interfaces
entries for those interfaces, with no associated addresses (if the
interfaces were already added, with addresses, from the list returned by
SIOCGIFCONF, they won't get added again).
Clean up the error handling a bit.
whether we have "freeifaddrs()" (we don't check whether we have
"getifaddrs()", and if we have "getifaddrs()" but not "freeifaddrs()",
we're stuck with leaking memory).
Give the "any" device an instance number of INT_MAX, so it shows up
after all other non-loopback devices.
"getifaddrs()" sometimes appears to supply a destination address even
for non-point-to-point interfaces (it did so on a FreeBSD 4.1 system);
don't use the broadcast address it supplies if an interface isn't a
broadcast interface, and don't use the destination address it supplies
if an interface isn't a point-to-point interface.
If we had an error constructing the list of interfaces, don't attempt to
add the "any" device to the list.
aclocal.m4:
revision 1.73
date: 2001/09/14 08:08:15; author: torsten; state: Exp; lines: +2 -2
The Itanium does not like unaligned memory accesses (the Linux kernel
warns about them and probably performance suffers). Therefore I added
the cpu to the list of systems where unaligned access should be avoided.
See also http://bugs.debian.org/112152
SOL_PACKET/PACKET_STATISTICS "getsockopt()" call, on Linux kernels that
support it, to get packet statistics, so that we can report the number
of dropped packets, and always use <linux/if_packet.h> to get
definitions for PF_PACKET sockets, so that we don't depend on glibc's
header files having been updated to support all the latest shiniest
kernel features (many systems with 2.4[.x] kernels don't have a
<netpacket/packet.h> that defines "struct tpacket_stats", for example,
so we wouldn't have been able to support that kernel feature on those
systems).
when compiling on Linux, as we extracted from those copies the
definitions and declarations we need in order to dissect packets, and
put them into our own header files in the regular source directory.
names, e.g. "alphaev56", rather than just "alpha", so, in
"AC_LBL_UNALIGNED_ACCESS", we should check for "alpha*", rather than
"alpha", in our test for platforms we *know* shouldn't do unaligned
accesses (Digital^H^H^H^H^H^H^HTru64 UNIX, by default, may just catch
the alignment trap, complain on the console, and then simulate the
unaligned access, but that's slow - and, in one test, didn't appear to
prevent all the faults from unaligned accesses).
./configure --enable-ipv6 (requires getaddrinfo(3) and getnameinfo(3)).
TODO: make it work even without getaddrinfo(3) or getnameinfo(3)
(or, tcpdump/configure.in should provide alternative version by
AC_REPLACE_FUNCS)
TODO: make IPv6 filtering code work by default
TODO: make "protochain" friendly with optimization
guy