Actually, the path we really need is the location of librexxapi. It looks like dladdr1() might give me the information I want, The main process executable might be an app that is just linked to the interpreter (for example bsfoorexx used from java).
http://man7.org/linux/man-pages/man3/dladdr.3.html But I don't know how portable it is or whether there are alternatives for the other platforms. The post that referenced this included all sorts of complications such as links that might be problematic. Rick On Sat, Jan 5, 2019 at 7:25 AM Enrico Sorichetti via Oorexx-devel < oorexx-devel@lists.sourceforge.net> wrote: > here are three snippets that show how to do it > > APPLE > > #include <stdio.h> > #include <string.h> > #include <stdlib.h> > #include <unistd.h> > > #include <libproc.h> > > > int main() > { > pid_t pid; > > char path[1024]; > > int RC; > char *cp; > > pid = getpid(); > RC = proc_pidpath (pid, path, sizeof(path)); > if ( RC <= 0 ) > { > exit(-1); > } > else > { > cp = strrchr(path,'/'); > *cp=0; > printf("path '%s'\n",path ) ; > exit(0); > } > exit(-1); > } > > Freebsd > /* FreeBSD > */ > #include <stdio.h> > #include <unistd.h> > > int main() > { > char path[1024]; > int size; > > size = readlink( "/proc/curproc/file", path, sizeof(path)-1); > > path[size] = '\0'; > > printf("***** '%s'\n", path ); > > return(0); > } > > linux > > #include <stdio.h> > #include <unistd.h> > > int main() > { > char path[1024]; > int size; > > size = readlink( "/proc/self/exe", path, sizeof(path)-1); > > path[size] = '\0'; > > printf("***** '%s'\n", path ); > > return(0); > } > > enrico > > > On 5 Jan 2019, at 13:07, Rick McGuire <object.r...@gmail.com> wrote: > > My understanding on unix systems is that it is not possible determine the > location of the binary. Please correct me if I'm wrong on this point, but > David Ashley was quite insistent that it was not possible > > > _______________________________________________ > Oorexx-devel mailing list > Oorexx-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/oorexx-devel >
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