Example 1: Calling an IBM PASE for i procedure from within IBM® i programs

This example shows an ILE program calling an PASE for i procedure.

Note: By using the code examples, you agree to the terms of the Code license and disclaimer information.
#include <stdio.h>
#include <qp2shell2.h>
#include <qp2user.h>
#define JOB_CCSID 0

int main(int argc, char *argv[])
    QP2_ptr64_t id;
    void *getpid_pase;
    const QP2_arg_type_t signature[] = { QP2_ARG_END };
    QP2_word_t result;

     * Call QP2SHELL2 to run the PASE for i program
     * /usr/lib/start32, which starts PASE for i in
     * 32-bit mode (and leaves it active on return)

     * Qp2dlopen opens the global name space (rather than
     * loading a new shared executable) when the first
     * argument is a null pointer.  Qp2dlsym locates the
     * function descriptor for the PASE for i getpid
     * subroutine (exported by shared library libc.a)
    id = Qp2dlopen(NULL, QP2_RTLD_NOW, JOB_CCSID);
    getpid_pase = Qp2dlsym(id, "getpid", JOB_CCSID, NULL);

     * Call Qp2CallPase to run the PASE for i getpid
     * function, and print the result.  Use Qp2errnop
     * to find and print the PASE for i errno if the
     * function result was -1
    int rc = Qp2CallPase(getpid_pase,
                         NULL,        // no argument list
    printf("PASE for i getpid() = %i\n", result);
    if (result == -1)
        printf("IBM i errno = %i\n", *Qp2errnop());

     *  Close the Qp2dlopen instance, and then call
     *  Qp2EndPase to end PASE for i in this job
    return 0;