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Date: Tue, 17 May 2005 13:04:46 +0400
From: Alexey Tourbin <at@altlinux.ru>
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Subject: [sisyphus] Re: zsh =?koi8-r?b?yQ==?= wks26
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On Fri, Apr 29, 2005 at 11:48:43PM +0600, Eugene Vlasov wrote:
> eugene ~ # grep PROMPT .zshrc
> PROMPT=3D'%n %4~ %(!.#.$) '
>=20
> =F2=C1=CE=D8=DB=C5 =D3 =D4=C1=CB=C9=CD=C9 =CE=C1=D3=D4=D2=CF=CA=CB=C1=CD=
=C9 zsh =CF=D4=CF=C2=D2=C1=D6=C1=CC #, =C5=D3=CC=C9 =D2=C1=C2=CF=D4=C1=C5=
=DB=D8 =C9=DA =D0=CF=C4
> root =C9 $ =D7 =D0=D2=CF=D4=C9=D7=CE=CF=CD =D3=CC=D5=DE=C1=C5. =E1 =D4=C5=
=D0=C5=D2=D8 =D7=D3=C5 =D7=D2=C5=CD=D1 =D0=CF=CB=C1=DA=D9=D7=C1=C5=D4 #. ba=
sh =D7=D3=C5
> =D0=CF=CB=C1=DA=D9=D7=C1=C5=D4 =CB=C1=CB =CE=C1=C4=CF. =ED=CF=D6=CE=CF =
=CB=CF=CE=C5=DE=CE=CF =D0=CF=CD=C5=CE=D1=D4=D8 PROMPT, =CE=CF =C8=CF=D4=C5=
=CC=CF=D3=D8 =C2=D9
> =D0=CF=CE=D1=D4=D8, =D7 =DE=C5=CD =CD=CF=D6=C5=D4 =C2=D9=D4=D8 =C4=C5=CC=
=CF.

$ info zsh 'Prompt Expansion'

%#
     A `#' if the shell is running with privileges, a `%' if not.
     Equivalent to `%(!.#.%%)'.  The definition of `privileged', for
     these purposes, is that either the effective user ID is zero, or,
     if POSIX.1e capabilities are supported, that at least one
     capability is raised in either the Effective or Inheritable
     capability vectors.

=F7 prompt.c =C9=D3=D0=CF=CC=D8=DA=D5=C5=D4=D3=D1 =C6=D5=CE=CB=C3=C9=D1 pri=
vasserted().

$ zsh-4.2.5/Src
$ sed -ne '/^privasserted/,/^}$/p' utils.c
privasserted(void)
{
    if(!geteuid())
        return 1;
#ifdef HAVE_CAP_GET_PROC
    {
        cap_t caps =3D cap_get_proc();
        if(caps) {
            /* POSIX doesn't define a way to test whether a capability set *
             * is empty or not.  Typical.  I hope this is conforming...    =
*/
            cap_flag_value_t val;
            cap_value_t n;
            for(n =3D 0; !cap_get_flag(caps, n, CAP_EFFECTIVE, &val); n++)
                if(val) {
                    cap_free(caps);
                    return 1;
                }
            cap_free(caps);
        }
    }
#endif /* HAVE_CAP_GET_PROC */
    return 0;
}
$

=FE=D4=CF =CE=C5 =D4=C1=CB =D3 =DC=D4=C9=CD =CB=CF=C4=CF=CD?

> --=20
> =F3 =D5=D7=C1=D6=C5=CE=C9=C5=CD, =E5=D7=C7=C5=CE=C9=CA                   =
       mailto:eugvv@altlinux.ru

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