Not being a *ix guy, wouldn't the env. var. REXX_HOME give you the path
to all of the executables?
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
<mailto: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
<mailto: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
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