Re: [PATCH] Prevent setting 32 uids/gids in the error range

[Alan Cox]

On Mon, 2003-02-17 at 07:41, Rusty Russell wrote:
> Tridge noticed that getegid() was returning EPERM.
> 
> I used -1000 since that's what PTR_ERR uses, but i386 _syscall macros
> use -125: I don't suppose it really matters.

Thats a bug in the interface. getegid/getgid/setegid/setuid() is not permitted to fail.
If libc is setting errno and returning -1 the libc wrapper is wrong.

set*id can fail, but unlike the get functions they do not return a uid but an error code.

Alan