On Sat, Jan 5, 2019 at 4:53 PM Gil Barmwater <gbarmwa...@alum.rpi.edu> wrote:
> Not being a *ix guy, wouldn't the env. var. REXX_HOME give you the path to > all of the executables? > There has never been a REXX_HOME environment variable. Rick > On 1/5/2019 9:17 AM, Rick McGuire wrote: > > 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 >> > > > _______________________________________________ > Oorexx-devel mailing > listOorexx-devel@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/oorexx-devel > > -- > Gil Barmwater > > _______________________________________________ > Oorexx-devel mailing list > Oorexx-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/oorexx-devel >
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