rpc.yppasswdd fails in 7.2?

[Kostik Belousov]

On Fri, Jun 26, 2009 at 04:59:29PM -0600, Barkley Vowk wrote:
> I've got a 7.2 box acting as NIS master, running rpc.yppasswdd. When 
> remote users try to change their passwords they see:
> 
> testing1# passwd mytest
> Changing NIS password for mytest
> Old Password:
> New Password:
> Retype New Password:
> passwd: pam_chauthtok(): error in service module
> 
> On the server I get this in the logs:
> rpc.yppasswdd[36858]: pw_mkdb() failed
> 
> I tracked the error message down to line 620 of yppasswdd_server.c, which
> lead me to libutil/pw_util.c.
> 
> It looks like waitpid in mk_pwdb is returning the error "No child 
> processes", which then makes mk_pwdb return an error. But the child does 
> run and do it's job as expected. If you edit yppasswdd_server.c to ignore 
> the return value of mk_pwdb, passwords are changed as expected.

I think this is a side-effect of r184459/r186756, that made rpc.yppasswdd to
ignore SIGCHLD.
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