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

[Oleg Verych <olecom@xxxxxxxxxxxxxx>]

> I've asked why it's needed and why euidaccess() from glibc
> wasn't used, especially in case of selinux stuff.

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
[...]
    /* If we are not set-uid or set-gid, access does the same.  */
    return access (path, mode);
[...]
#end_cc
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