Trying to get things less hazy. From ld.so(8):
The necessary shared libraries needed by the program are searched for in the following order o Using the environment variable LD_LIBRARY_PATH (LD_AOUT_LIBRARY_PATH for a.out programs). Except if the exe- cutable is a setuid/setgid binary, in which case it is ignored. I tried to find this type of stuff in the glibc source online quickly, but here's all I can do: http://google.com/codesearch?hl=en&q=+package:glibc+LD_LIBRARY_PATH+show:5-uyA-74TiI:kyA999K8eys:Etn8yARxAbA&sa=N&cd=19&ct=rc&cs_p=http://ftp.gnu.org/gnu/glibc/glibc-2.3.3.tar.bz2&cs_f=glibc-2.3.3/sysdeps/generic/unsecvars.h#first I assert that UNSECURE_ENVVARS are scrubbed by glibc somewhere in combination with a check of euid and egid. This is clearly a security thing. .laz Adam Lazur ([EMAIL PROTECTED]) said: > My memory is hazy, but I believe I tracked this down to glibc doing this > on behalf of screen because it's a setgid binary. > > Details are hazy because this was a year or three ago. > > .laz > > Zvi Har'El ([EMAIL PROTECTED]) said: > > Hi > > > > > > Thanks, but no thanks. I am not interested in tricks to set > > LD_LIBRARY_PATH. This is not what the screen mailing list about. > > > > > > I am concerned about the fact that screen removes LD_LIBRARY_PATH from > > the environment, and I believe this behavior is a bug. > > > > > > Zvi. > > > > > > On 16/01/08 23:15, Randy Belk wrote: > > > > >When you first login Bash will read /etc/bash.bashrc and also > > >$HOME/.bashrc to set stuff like your path($PATH) and other environment > > >variables. Always put your LD_LIBRARY_PATH exports in either of these > > >two files. New bash screen sessions will always read /etc/bash.bashrc > > >and also $HOME/.bashrc on startup! You don't need to write a script > > >use VI and add the LD_LIBRARY_PATH to these file once and your done. > > > > > >On Jan 16, 2008 2:41 PM, Zvi Har'El <[EMAIL PROTECTED]> wrote: > > > > > >> > > >>Of course this works. But the problem is that LD_LIBRARY_PATH is part of > > >>the > > >>configuration of the run (shared libraries used in addition to the > > >>standard > > >>libraries). Of course I can write a script to edit .bashrc, but this is a > > >>ridiculed solution. Why cannot screen export the original > > >>LD_LIBRARY_PATH??? > > >> > > >> > > >> > > >> On 16/01/08 20:54, Randy Belk wrote: > > >> > > >> > > >> > > >> Try putting the LD_LIBRARY_PATH in your .bashrc, that should work. > > >> > > >>On Jan 16, 2008 11:59 AM, Zvi Har'El <[EMAIL PROTECTED]> wrote: > > >> > > >> > > >> I am using screen to run several applications simultaneously in the > > >>same environment. The environment preparation consists of exporting > > >>various variables, including LD_LIBRARY_PATH. However, after running > > >>screen, the various windows show the original environment (of course > > >>few changes, like $SHLVL increases, $TERM is changed to screen and > > >>$TERMCAP, $STY and $WINDOW are set), but one important variable > > >>disppeared: $LD_LIBRARY_PATH is not set at all. In the following > > >>example, I did "export >/tmp/before;screen" and then, on window 0: > > >> > > >>sh-3.00$ export >/tmp/after > > >>sh-3.00$ diff /tmp/{before,after} > > >>23d22 > > >>< export LD_LIBRARY_PATH="/usr/local/lib:/opt/openssl/lib" > > >>39c38 > > >>< export SHLVL="3" > > >>--- > > >> > export SHLVL="4" > > >>42a42 > > >> > export STY="16314.pts-2.bambi" > > >>44c44,68 > > >>< export TERM="xterm" > > >>--- > > >> > export TERM="screen" > > >> > export TERMCAP="SC|screen|VT 100/ANSI X3.64 virtual terminal:\\\ > > >> > :DO=\\E[%dB:LE=\\E[%dD:RI=\\E[%dC:UP=\\E[%dA:bs:bt=\\E[Z:\\\ > > >> > :cd=\\E[J:ce=\\E[K:cl=\\E[H\\E[J:cm=\\E[%i%d;%dH:ct=\\E[3g:\\\ > > >> > :do=^J:nd=\\E[C:pt:rc=\\E8:rs=\\Ec:sc=\\E7:st=\\EH:up=\\EM:\\\ > > >> > :le=^H:bl=^G:cr=^M:it#8:ho=\\E[H:nw=\\EE:ta=^I:is=\\E)0:\\\ > > >> > :li#77:co#80:am:xn:xv:LP:sr=\\EM:al=\\E[L:AL=\\E[%dL:\\\ > > >> > :cs=\\E[%i%d;%dr:dl=\\E[M:DL=\\E[%dM:dc=\\E[P:DC=\\E[%dP:\\\ > > >> > :im=\\E[4h:ei=\\E[4l:mi:IC=\\E[%d@:ks=\\E[?1h\\E=:\\\ > > >> > :ke=\\E[?1l\\E>:vi=\\E[?25l:ve=\\E[34h\\E[?25h:vs=\\E[34l:\\\ > > >> > :ti=\\E[?1049h:te=\\E[?1049l:us=\\E[4m:ue=\\E[24m:so=\\E[3m:\\\ > > >> > :se=\\E[23m:mb=\\E[5m:md=\\E[1m:mr=\\E[7m:me=\\E[m:ms:\\\ > > >> > :Co#8:pa#64:AF=\\E[3%dm:AB=\\E[4%dm:op=\\E[39;49m:AX:\\\ > > >> > :vb=\\Eg:G0:as=\\E(0:ae=\\E(B:\\\ > > >> > > > >>:ac=\\140\\140aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~..--++,,hhII00:\\\ > > >> > :po=\\E[5i:pf=\\E[4i:Z0=\\E[?3h:Z1=\\E[?3l:k0=\\E[10~:\\\ > > >> > :k1=\\EOP:k2=\\EOQ:k3=\\EOR:k4=\\EOS:k5=\\E[15~:k6=\\E[17~:\\\ > > >> > :k7=\\E[18~:k8=\\E[19~:k9=\\E[20~:k;=\\E[21~:F1=\\E[23~:\\\ > > >> > :F2=\\E[24~:F3=\\E[1;2P:F4=\\E[1;2Q:F5=\\E[1;2R:F6=\\E[1;2S:\\\ > > >> > :F7=\\E[15;2~:F8=\\E[17;2~:F9=\\E[18;2~:FA=\\E[19;2~:kb=^H:\\\ > > >> > :K2=\\EOE:kB=\\E[Z:kF=\\E[1;2B:kR=\\E[1;2A:*4=\\E[3;2~:\\\ > > >> > :*7=\\E[1;2F:#2=\\E[1;2H:#3=\\E[2;2~:#4=\\E[1;2D:%c=\\E[6;2~:\\\ > > >> > :%e=\\E[5;2~:%i=\\E[1;2C:kh=\\E[1~:@1=\\E[1~:kH=\\E[4~:\\\ > > >> > :@7=\\E[4~:kN=\\E[6~:kP=\\E[5~:kI=\\E[2~:kD=\\E[3~:ku=\\EOA:\\\ > > >> > :kd=\\EOB:kr=\\EOC:kl=\\EOD:km:" > > >>49a74 > > >> > export WINDOW="0" > > >>55a81 > > >> > export _="sh" > > >> > > >>-- > > >>Dr. Zvi Har'El mailto:[EMAIL PROTECTED] Department of Mathematics > > >>tel:+972-54-4227607 Technion - Israel Institute of Technology > > >>fax:+972-4-8293388 http://www.math.technion.ac.il/~rl/ Haifa 32000, ISRAEL > > >>"If you can't say somethin' nice, don't say nothin' at all." -- Thumper > > >>(1942) > > >> > > >> > > >> > > >>_______________________________________________ > > >>screen-users mailing list > > >>[EMAIL PROTECTED] > > >>http://lists.gnu.org/mailman/listinfo/screen-users > > >> > > >> > > >> > > >>_______________________________________________ > > >>screen-users mailing list > > >>[EMAIL PROTECTED] > > >>http://lists.gnu.org/mailman/listinfo/screen-users > > >> > > >> > > >> -- > > >>Dr. Zvi Har'El mailto:[EMAIL PROTECTED] Department of Mathematics > > >>tel:+972-54-4227607 Technion - Israel Institute of Technology > > >>fax:+972-4-8293388 http://www.math.technion.ac.il/~rl/ Haifa 32000, ISRAEL > > >>"If you can't say somethin' nice, don't say nothin' at all." -- Thumper > > >>(1942) > > >> > > >> > > >> > > > > > > > > >_______________________________________________ > > >screen-users mailing list > > >[EMAIL PROTECTED] > > >http://lists.gnu.org/mailman/listinfo/screen-users > > > > > > > > -- Adam Lazur _______________________________________________ screen-devel mailing list screen-devel@gnu.org http://lists.gnu.org/mailman/listinfo/screen-devel