peer ip address not set after accept call in 64 bit mode

[Rajesh R_2]

We have an application that validates client ip address. This works well when compiled in 32 bit mode. When compiled in 64 bit mode, inet_ntoa() is not giving correct ip address of the client. We have tried this on PA as well as itanium. Both behaves similar. Is there any problem with the code.. or is there any patch to be applied?

[Steven E. Protter]

Please post a code snippet.

Also post a few examples of the problem and tell us what compiler you used to compile the program.

It could be any number of factors, OS, compiler, etc.

SEP

[Rajesh R_2]

what cc :

$Revision: 92453-07 linker linker crt0.o B.11.16.01 030316 $
LINT B.11.11.08 CXREF B.11.11.08
HP92453-01 B.11.11.08 HP C Compiler
$ PATCH/11.00:PHCO_27774 Oct 3 2002 09:45:59 $

sample.c is attached.

[Stephen Keane]

What does len contain after the accept call?

[Rajesh R_2]

len (after accept)is 16 on both 32 bit as well as 64 bit.

[Stephen Keane]

Can you print out cliAddr->sin_addr, cliAddr->sin_family and cliAddr->sin_port as hexadecimal numbers after the accept call. You might also try memset on cliAddr before first usage, to ensure that it is empty.

[Rajesh R_2]

I tried to print sin_family, sin_addr and sin_port. all are coming as ZEROES.

[Stephen Keane]

Do they come out as zeroes in both 32-bit and 64-bit modes?

[Rajesh R_2]

No. it is ZERO for 64 bit only.

[Stephen Keane]

What does ldd of your 32-bit and 64-bit binaries give you?

[Rajesh R_2]

### 64 bit
hpdev:/tmp()>ldd a.out
libc.2 => /usr/lib/pa20_64/libc.2
libdl.1 => /usr/lib/pa20_64/libdl.1

### 32 bit
hpdev:/tmp()>ldd a.out
/usr/lib/libc.2 => /usr/lib/libc.2
/usr/lib/libdld.2 => /usr/lib/libdld.2
/usr/lib/libc.2 => /usr/lib/libc.2

[Stephen Keane]

What happens if you change

socklen_t len;

to

size_t len;

Just as a matter of interest ...

[Rajesh R_2]

Even size_t is resulting in the same.

I am getting the following warning while using compile option +M2

cc: "/usr/include/sys/_fd_macros.h", line 61: LP64 migration warning 753: * converts 32 bit integer to long

[Stephen Keane]

What are the lines around line 61 in /usr/include/sys/_fd_macros.h,
my version of the header file is different. Say 10 lines either side. I suspect it has to do with the definition of __fd_mask

[Stephen Keane]

A shot in the dark, but try including in your code, probably after socket.h