source: trunk/third/moira/lib/mr_query.c @ 24250

Revision 24250, 1.7 KB checked in by broder, 15 years ago (diff)
New Moira snapshot from subversion. Sorry for the large diff - looks like all of the keywords changed in the SVN import process.
RevLine 
[23740]1/* $Id: mr_query.c,v 1.18 1998-02-19 21:22:25 danw Exp $
[23095]2 *
3 * Perform a Moira query
4 *
5 * Copyright (C) 1987-1998 by the Massachusetts Institute of Technology
6 * For copying and distribution information, please see the file
7 * <mit-copyright.h>.
8 *
9 */
10
11#include <mit-copyright.h>
12#include <moira.h>
13#include "mr_private.h"
14
15#include <errno.h>
16#include <stdlib.h>
17#include <string.h>
18
[24250]19RCSID("$Header: /afs/.athena.mit.edu/astaff/project/moiradev/repository/moira/lib/mr_query.c,v 1.18 1998-02-19 21:22:25 danw Exp $");
[23095]20
21/*
22 * This routine is the primary external interface to the mr library.
23 *
24 * It builds a new argument vector with the query handle prepended,
25 * and calls mr_query_internal.
26 */
27static int level = 0;
28
29int mr_query(char *name, int argc, char **argv,
30             int (*callproc)(int, char **, void *), void *callarg)
31{
32  int status, stopcallbacks = 0;
33  mr_params params, reply;
34
35  CHECK_CONNECTED;
36  if (level)
37    return MR_QUERY_NOT_REENTRANT;
38
39  params.u.mr_procno = MR_QUERY;
40  params.mr_argc = argc + 1;
41  params.mr_argl = NULL;
42  params.mr_argv = malloc(sizeof(char *) * (argc + 1));
43  if (!params.mr_argv)
44    return ENOMEM;
45  params.mr_argv[0] = name;
46  memcpy(params.mr_argv + 1, argv, sizeof(char *) * argc);
47
48  level++;
49  if ((status = mr_do_call(&params, &reply)))
50    goto punt;
51
52  while ((status = reply.u.mr_status) == MR_MORE_DATA)
53    {
54      if (callproc && !stopcallbacks)
55        stopcallbacks = (*callproc)(reply.mr_argc, reply.mr_argv, callarg);
56      mr_destroy_reply(reply);
57
58      if (mr_receive(_mr_conn, &reply) != MR_SUCCESS)
59        {
60          mr_disconnect();
61          status = MR_ABORTED;
62          goto punt_1;
63        }
64    }
65
66punt:
67  mr_destroy_reply(reply);
68punt_1:
69  level--;
70  free(params.mr_argv);
71
72  return status;
73}
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