Op 19/08/2013 om 10:14:40 -0400, schreef Wietse Venema: > Leo Baltus: > > However, I did notice that postfix exec()'s new processes using the > > path to the binaries it got from > > 'PATH=symlink_to_postfix/sbin postfix start' > > instead of compile-time arguments DEF_COMMAND_DIR DEF_DAEMON_DIR etc. > > The Postfix master(8) daemon executes programs with pathnames > that are derived from the $daemon_directory value. >
Where $daemon_directory defaults to DEF_DAEMON_DIR? DEF_DAEMON_DIR is set compile time should be constant. I set it to e.g. /software/postfix-2.10.1/libexec > master_ent.c: serv->path = concatenate(var_daemon_dir, "/", command, (char > *) 0); > master_spawn.c: execvp(serv->path, serv->args->argv); > > The kernel resolves the pathname each time Postfix invokes execvp(). > > > I may have been playing with symlink_to_postfix while hunting this down. > > If you swap symlinks, then the result of execvp() will change. > But that would imply that postfix uses a runtime value ($PATH?). I used to think it would use /software/postfix-2.10.1/libexec untill a new version comes along and that master would start using /software/postfix-x.y/libexec -- Leo Baltus, internetbeheerder /\ NPO ICT Internet Services /NPO/\ Sumatralaan 45, 1217 GP Hilversum, Filmcentrum, west \ /\/ serviced...@omroep.nl, 035-6773555 \/
