> Would anyone like to give me a helping hand in implementing the
> getpeereid() syscall for Linux? See the following page for the
> documentation of the OpenBSD implementation:
>
> http://www.openbsd.org/cgi-bin/man.cgi?query=getpeereid&sektion=2&apropos=0&manpath=OpenBSD+Current
>
> I think I could work out the kernel data structures to gather the
> relevant data from, however, I won't get all the locking stuff right.
>
> OTOH, is there any chance that the addition of such a syscall would be
> accepted?
There's no need. The equivalent functionality can already be
implemented in userspace.
------
#include <sys/socket.h>
uid_t getpeereuid(int sd)
{
struct ucred cred;
int len = sizeof (cred);
if (getsockopt(sd,SOL_SOCKET,SO_PEERCRED,&cred,&len))
return -1;
return cred.uid;
}
------
The same can be done for gid, and even pid.
Yes, Linux rules.
-- Michael Bacarella <mbac@nyct.net> Technical Staff / System Development, New York Connect.Net, Ltd. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Fri Sep 07 2001 - 21:00:31 EST