Re: euidaccess() vs non suid /bin/sh (Re: dash test -w oddities)

[Oleg Verych <olecom@xxxxxxxxxxxxxx>]

> I wonder even more why access() syscall isn't a solution, because
> /bin/sh isn't set-uid by definition.
> 
> #/bin/cc glibc/sysdeps/posix/euidaccess.c

Also why there's no such syscall, i wouldn't require all uid shuffling,
isn't it?

#fs/open.c:sys_faccessat()

        old_fsuid = current->fsuid;
        old_fsgid = current->fsgid;
        old_cap = current->cap_effective;

        current->fsuid = current->uid;
        current->fsgid = current->gid;

#end
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