net-snmp-loadave-writable.patch

   1 --- net-snmp-5.4.2.1/agent/mibgroup/ucd-snmp/loadave.c~ 2009-12-21 21:00:10.094254079 +0200
   2 +++ net-snmp-5.4.2.1/agent/mibgroup/ucd-snmp/loadave.c  2009-12-21 22:02:45.398903148 +0200
   3 @@ -152,7 +152,7 @@
   4           {ERRORNAME}},
   5          {LOADAVE, ASN_OCTET_STR, RONLY, var_extensible_loadave, 1,
   6           {LOADAVE}},
   7 -        {LOADMAXVAL, ASN_OCTET_STR, RONLY, var_extensible_loadave, 1,
   8 +        {LOADMAXVAL, ASN_OCTET_STR, RWRITE, var_extensible_loadave, 1,
   9           {LOADMAXVAL}},
  10          {LOADAVEINT, ASN_INTEGER, RONLY, var_extensible_loadave, 1,
  11           {LOADAVEINT}},
  12 @@ -309,6 +309,63 @@
  13      return 0;
  14  }
  15
  16 +static int
  17 +write_laConfig(int action,
  18 +                          u_char * var_val,
  19 +                          u_char var_val_type,
  20 +                          size_t var_val_len,
  21 +                          u_char * statP, oid * name, size_t name_len)
  22 +{
  23 +    static double laConfig = 0;
  24 +
  25 +    switch (action) {
  26 +    case RESERVE1:
  27 +        if (var_val_type != ASN_OCTET_STR) {
  28 +            DEBUGMSGTL(("ucd-snmp/loadave",
  29 +                        "write to laConfig not ASN_OCTET_STR\n"));
  30 +            return SNMP_ERR_WRONGTYPE;
  31 +        }
  32 +        if (var_val_len > 8 || var_val_len <= 0) {
  33 +            DEBUGMSGTL(("ucd-snmp/loadave",
  34 +                        "write to laConfig: bad length\n"));
  35 +            return SNMP_ERR_WRONGLENGTH;
  36 +        }
  37 +        break;
  38 +
  39 +    case RESERVE2:
  40 +        {
  41 +            u_char buf[8];
  42 +            int old_errno = errno;
  43 +            double val;
  44 +            char *endp;
  45 +
  46 +            strncpy(buf, var_val, var_val_len);
  47 +            buf[var_val_len] = '\0';
  48 +            val = strtod(buf, &endp);
  49 +
  50 +            if (errno == ERANGE || *endp != '\0' || val < 0 || val > 65536.00) {
  51 +                errno = old_errno;
  52 +                DEBUGMSGTL(("ucd-snmp/loadave",
  53 +                            "write to laConfig: invalid value\n"));
  54 +                return SNMP_ERR_WRONGVALUE;
  55 +            }
  56 +
  57 +            errno = old_errno;
  58 +
  59 +            laConfig = val;
  60 +        }
  61 +        break;
  62 +
  63 +    case COMMIT:
  64 +        {
  65 +            int idx = name[name_len - 1] - 1;
  66 +            maxload[idx] = laConfig;
  67 +        }
  68 +    }
  69 +
  70 +    return SNMP_ERR_NOERROR;
  71 +}
  72 +
  73  u_char         *
  74  var_extensible_loadave(struct variable * vp,
  75                         oid * name,
  76 @@ -328,6 +385,10 @@
  77      case MIBINDEX:
  78          long_ret = name[*length - 1];
  79          return ((u_char *) (&long_ret));
  80 +    case LOADMAXVAL:
  81 +        /* setup write method, but don't return yet */
  82 +        *write_method = write_laConfig;
  83 +        break;
  84      case ERRORNAME:
  85          sprintf(errmsg, "Load-%d", ((name[*length - 1] == 1) ? 1 :
  86                                      ((name[*length - 1] == 2) ? 5 : 15)));