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- From: "J.W. Chang" <jwjang AT telcoware.com>
- To: <discussion AT sctp.de>
- Subject: [SCTP-Discussion] Bug in adl_open_sctp_socket() in "adaptation.c"
- Date: Fri Nov 2 17:07:00 2001
- List-id: SCTP Discussions <discussion.sctp.de>
- Organization: Telcoware, Co. Ltd.
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Hello,
Currently I'm trying to port sctplib-pre14 to Solaris
2.6.
(It was very hard work since "configure" script of
sctplib-pre14 seems to be tuned for
Solaris 7 or 8. Why Solaris 2.6? Please ask my boss.
:-))
Anyway, I've found a bug from "adaptation.c". Take a look at
adl_open_sctp_socket().
There is a local variable "opt_size" in integer type. Its
address is passed to getsockopt()
as the last parameter, to retrieve the value of
SO_RCVBUF socket option.
Here is the prototype of getsockopt():
int getsockopt(int s, int level, int optname, void
*optval, socklen_t *optlen);
According to the man page of getsockopt(), the
last optlen is a kind of "value-result"
type of parameter. That is, value of optlen must be
initialized as the size of buffer
pointed to by optval. Buf "opt_size" variable in
"adaptation.c" is not initialized at all.
While it was no problem on my Linux, it caused
problem on my Sun Ultra-10 with Solaris 2.6.
(getsockopt() fails.)
That can be quickly cured by initializing "opt_size" as
sizeof(int).
Chang Jin-woong
jwjang AT telcoware.com
PS: It seems that Sol2.6 does not support RECVDSTADDR
socket option. Does anyone
know RECVDSTADDR equivalent on Solaris 2.6/7/8? Thanks in
advance.
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- [SCTP-Discussion] Bug in adl_open_sctp_socket() in "adaptation.c", J.W. Chang, 11/02/2001
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