/*---------------------------------------------------------------------+
|                Copyright (c) 1995, SAS Institute Inc.                |
|                  Unpublished - All Rights Reserved                   |
|                      S A S / C   S A M P L E                         |
|                                                                      |
|         NAME: DYNALLOC                                               |
|     LANGUAGE: C                                                      |
|      PURPOSE: DYNALLOC demonstrates the use of the function:         |
|               "osdynalloc()", which is used to invoke MVS dynamic    |
|               allocation SVC (SVC 99). DYNALLOC opens the Internal   |
|               Reader and submits a job to the JES INTRDR.            |
|        NOTES: Customize the "#define DATA_SET_NAME" value below, the |
|               default value is:  SASC.C600.CNTL(NTVALID)             |
|        NOTES: Additional details on SVC 99 dynamic allocation may be |
|               found in the IBM Publication MVS/ESA Application       |
|               Development Guide: Assembler Language Programs         |
|   MVS -                                                              |
|      COMPILE, LINK, EXECUTE: SUBMIT prefix.SAMPLE.AUX(LC370CLG)      |
|               where "prefix" is the installation defined high-level- |
|               qualifier for the SAS/C product.                       |
|   TSO -                                                              |
|      COMPILE: LC370 CLIST                                            |
|         LINK: CLK370 CLIST                                           |
|      EXECUTE: CALL 'your.load.lib(DYNALLOC)'                         |
|   CMS - N/A                                                          |
+---------------------------------------------------------------------*/
#include <os.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/*---------------------------------------------------------------------+
| Modify the "#define" below, the DATA_SET_NAME value should be the    |
| dataset name, containing JCL, to be submitted.                       |
+---------------------------------------------------------------------*/
#define DATA_SET_NAME "dsn:SASC.C600.CNTL(NTVALID)"

main()
{
int reason = 0;
int rc;
char buffer[81];
FILE *fp;
FILE *jfp;

/*---------------------------------------------------------------------+
| call osdynalloc() - action = DYN_ALLOC, keywords = char *, and       |
| libmsgbuf = NULL.                                                    |
| NOTE: keywords may contain a key_word=?. Each "?" indicates the      |
| value, is specified as an additional argument in the argument list.  |
| Multiple "?" may be used, and each "?" corresponds directly to       |
| additional arguments in the argument list.                           |
+---------------------------------------------------------------------*/
rc = osdynalloc(DYN_ALLOC,
               "ddn=JCLOUT,recfm=F,lrecl=80,sysout=A,"
               "sysoutpgm=INTRDR,reason=?",NULL,&reason);

if (rc != 0)
  {
  printf("osdynalloc INTRDR allocation failed, rc = %d, "
         "reason = %04x\n", rc, reason);
  exit(EXIT_FAILURE);
  }

/*---------------------------------------------------------------------+
| ddn:JCLOUT has been allocated, now call fopen()                      |
+---------------------------------------------------------------------*/
jfp = fopen("ddn:JCLOUT","wb");
if (jfp == NULL)
  {
  perror("fopen() for jclout failed");
  exit(EXIT_FAILURE);
  }

/*---------------------------------------------------------------------+
| call fopen() with the DATA_SET_NAME value                            |
+---------------------------------------------------------------------*/
fp = fopen(DATA_SET_NAME,"rb");
if (fp == NULL)
  {
  perror("fopen() for DATA_SET_NAME failed");
  exit(EXIT_FAILURE);
  }

/*---------------------------------------------------------------------+
| read a line of from DATA_SET_NAME and then write to JCLOUT           |
+---------------------------------------------------------------------*/
while (fread(buffer, 80, 1, fp) != NULL)
  {
  fwrite(buffer, 80, 1, jfp);
  }

/*---------------------------------------------------------------------+
| close() JCLOUT and DATA_SET_NAME                                     |
+---------------------------------------------------------------------*/
rc = fclose(jfp);
if (rc != 0)
  perror("fclose() error closing jclout");

rc = fclose(fp);
if (rc != 0)
  perror("fclose() error DATA_SET_NAME");

printf("DYNALLOC Completed");
return (EXIT_SUCCESS);
}