Milter-greylist

--- In milter-greylist@yahoogroups.com, Matthias Scheler <tron@z...>
wrote:
> On Thu, Dec 16, 2004 at 05:16:57AM +0000, Matthias Scheler wrote:
> > > Could you please provide output from "truss -f" for this bug?
> > Better make that "truss -v all -o trussfile -f ...".
> 
> Here is the output which Fredrik kindly provided:
> 
> 7906/4:         so_socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP, "", 1) = 8
> 7906/4:         bind(8, 0x000632E8, 16, 3)                     
Err#126 EADDRNOTAVAIL
> 7906/4:                 AF_INET  name = 151.156.192.100  port = 0
> 
> So bind() worked as expected. The question is why errno got overwritten.
> Looking at the code the code in "sync.c" ...
> 
> 	if (bind(sfd, sa, salen) == -1) {
> 		if (errno != EADDRNOTAVAIL) {
> 			syslog(LOG_ERR, "local_addr: bind failed: %s\n",
> 			    strerror(errno));
> 			islocal = -1;
> 		} else {
> 			islocal = 0;
> 		}
> 	} else {
> 		islocal = 1;
> 	}
> 
> ... I cannot see why it was overwritten unless this code has been
> interrupted by a signal handler.

Could it be due to lack of some #define that would make errno
thread-safe?  Just a wild guess...

BTW, 'syslog(LOG_ERR, "local_addr: bind failed: %m")' is a bit shorter :)

Eugene