lseek problem

[Dan Nelson]

In the last episode (Jun 06), Tim Pushor said:
> I am working on porting an old system over to FreeBSD, and am having
> a weird (to me) problem. This system uses various data file types,
> and unfortunately it uses the group_id execution bit (but no execute)
> on a data file to signify a sequential type file (mode 2440). I have
> stepped through the code, and it is failing on an lseek
> (fd,0,SEEK_SET) where fd is the properly opened file descriptor for
> one of these files. This file is readable by the user and is about 2K
> in size. this lseek should work shoudn't it? Its returning -1 and
> sets errno to 22 (EINVAL). Could this be because of the weird mode?
> man chmod doesn't say anything about what the set-group-id bit does
> to non-executable files. Could this be the problem?

The only obvious cause of EINVAL from lseek would be an invalid third
argument.  The program doesn't try and define SEEK_SET itself, does it?

-- 
	Dan Nelson
	dnelson at allantgroup.com