release/src/router/nfs-utils/utils/statd/stat.c

   1 /*
   2  * Copyright (C) 1995, 1997, 1999 Jeffrey A. Uphoff
   3  * Modified by Olaf Kirch, 1996.
   4  *
   5  * NSM for Linux.
   6  */
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include <config.h>
  10 #endif
  11
  12 #include <netdb.h>
  13 #include "statd.h"
  14
  15 /*
  16  * Services SM_STAT requests.
  17  *
  18  * According the the X/Open spec's on this procedure: "Implementations
  19  * should not rely on this procedure being operative.  In many current
  20  * implementations of the NSM it will always return a 'STAT_FAIL'
  21  * status."  My implementation is operative; it returns 'STAT_SUCC'
  22  * whenever it can resolve the hostname that it's being asked to
  23  * monitor, and returns 'STAT_FAIL' otherwise.
  24  *
  25  * sm_inter.x says the 'state' returned should be
  26  *   "state number of site sm_name".  It is not clear how to get this.
  27  * X/Open says:
  28  *   STAT_SUCC
  29  *      The NSM will monitor the given host. "sm_stat_res.state" contains
  30  *      the state of the NSM.
  31  * Which implies that 'state' is the state number of the *local* NSM.
  32  * href=http://www.opengroup.org/onlinepubs/9629799/SM_STAT.htm
  33  *
  34  * We return the *local* state as
  35  *   1/ We have easy access to it.
  36  *   2/ It might be useful to a remote client who needs it and has no
  37  *      other way to get it.
  38  *   3/ That's what we always did in the past.
  39  */
  40 struct sm_stat_res *
  41 sm_stat_1_svc (struct sm_name *argp, struct svc_req *rqstp)
  42 {
  43   static sm_stat_res result;
  44
  45   if (gethostbyname (argp->mon_name) == NULL) {
  46     note (N_WARNING, "gethostbyname error for %s", argp->mon_name);
  47     result.res_stat = STAT_FAIL;
  48     dprintf (N_DEBUG, "STAT_FAIL for %s", argp->mon_name);
  49   } else {
  50     result.res_stat = STAT_SUCC;
  51     dprintf (N_DEBUG, "STAT_SUCC for %s", argp->mon_name);
  52   }
  53   result.state = MY_STATE;
  54   return(&result);
  55 }