src/venus/twiddle.c

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #include <afsconfig.h>
  11 #include <afs/param.h>
  12 #include <afs/stds.h>
  13
  14 #include <roken.h>
  15
  16 #include <rx/xdr.h>
  17 #include <afs/com_err.h>
  18 #include <afs/vice.h>
  19 #include <afs/venus.h>
  20 #undef VIRTUE
  21 #undef VICE
  22 #include "afs/prs_fs.h"
  23 #include <afs/afsint.h>
  24 #include <afs/cellconfig.h>
  25 #include <afs/cmd.h>
  26 #include <afs/com_err.h>
  27 #include <afs/afs_consts.h>
  28 #include <afs/sys_prototypes.h>
  29
  30 #define MAXINSIZE 1300          /* pioctl complains if data is larger than this */
  31 #define VMSGSIZE 128            /* size of msg buf in volume hdr */
  32
  33 static void Die(int code, char *filename);
  34
  35 static char pn[] = "fs";
  36 static int rxInitDone = 0;
  37
  38 static int
  39 Twiddle(struct cmd_syndesc *as, void *arock)
  40 {
  41     afs_int32 code;
  42     struct ViceIoctl blob;
  43     struct cmd_item *ti;
  44     struct rxparams rxp;
  45     int tmp;
  46
  47     ti = as->parms[0].items;
  48     if (ti && ti->data) {
  49         tmp = atoi(ti->data);
  50     } else
  51         tmp = 0;
  52     rxp.rx_initReceiveWindow = tmp;
  53     ti = as->parms[1].items;
  54     if (ti && ti->data) {
  55         tmp = atoi(ti->data);
  56     } else
  57         tmp = 0;
  58     rxp.rx_maxReceiveWindow = tmp;
  59     ti = as->parms[2].items;
  60     if (ti && ti->data) {
  61         tmp = atoi(ti->data);
  62     } else
  63         tmp = 0;
  64     rxp.rx_initSendWindow = tmp;
  65     ti = as->parms[3].items;
  66     if (ti && ti->data) {
  67         tmp = atoi(ti->data);
  68     } else
  69         tmp = 0;
  70     rxp.rx_maxSendWindow = tmp;
  71     ti = as->parms[4].items;
  72     if (ti && ti->data) {
  73         tmp = atoi(ti->data);
  74     } else
  75         tmp = 0;
  76     rxp.rxi_nSendFrags = tmp;
  77     ti = as->parms[5].items;
  78     if (ti && ti->data) {
  79         tmp = atoi(ti->data);
  80     } else
  81         tmp = 0;
  82     rxp.rxi_nRecvFrags = tmp;
  83     ti = as->parms[6].items;
  84     if (ti && ti->data) {
  85         tmp = atoi(ti->data);
  86     } else
  87         tmp = 0;
  88     rxp.rxi_OrphanFragSize = tmp;
  89     ti = as->parms[7].items;
  90     if (ti && ti->data) {
  91         tmp = atoi(ti->data);
  92     } else
  93         tmp = 0;
  94     rxp.rx_maxReceiveSize = tmp;
  95     ti = as->parms[8].items;
  96     if (ti && ti->data) {
  97         tmp = atoi(ti->data);
  98     } else
  99         tmp = 0;
 100     rxp.rx_MyMaxSendSize = tmp;
 101
 102     blob.in = (char *)&rxp;
 103     blob.out = (char *)&rxp;
 104     blob.in_size = sizeof(rxp);
 105     blob.out_size = sizeof(rxp);
 106     code = pioctl(0, VIOC_TWIDDLE, &blob, 1);
 107
 108     if (code) {
 109         Die(code, 0);
 110     }
 111     return code;
 112 }
 113
 114 #include "AFS_component_version_number.c"
 115
 116 int
 117 main(int argc, char **argv)
 118 {
 119     afs_int32 code;
 120     struct cmd_syndesc *ts;
 121
 122 #ifdef  AFS_AIX32_ENV
 123     /*
 124      * The following signal action for AIX is necessary so that in case of a
 125      * crash (i.e. core is generated) we can include the user's data section
 126      * in the core dump. Unfortunately, by default, only a partial core is
 127      * generated which, in many cases, isn't too useful.
 128      */
 129     struct sigaction nsa;
 130
 131     sigemptyset(&nsa.sa_mask);
 132     nsa.sa_handler = SIG_DFL;
 133     nsa.sa_flags = SA_FULLDUMP;
 134     sigaction(SIGSEGV, &nsa, NULL);
 135 #endif
 136     /* try to find volume location information */
 137
 138
 139     ts = cmd_CreateSyntax(NULL, Twiddle, NULL, 0, "adjust rx parms");
 140     cmd_AddParm(ts, "-initReceiveWindow ", CMD_SINGLE, CMD_OPTIONAL, "16");
 141     cmd_AddParm(ts, "-maxReceiveWindow ", CMD_SINGLE, CMD_OPTIONAL, "16");
 142     cmd_AddParm(ts, "-initSendWindow ", CMD_SINGLE, CMD_OPTIONAL, "8");
 143     cmd_AddParm(ts, "-maxSendWindow ", CMD_SINGLE, CMD_OPTIONAL, "16");
 144     cmd_AddParm(ts, "-nSendFrags ", CMD_SINGLE, CMD_OPTIONAL, "4");
 145     cmd_AddParm(ts, "-nRecvFrags ", CMD_SINGLE, CMD_OPTIONAL, "4");
 146     cmd_AddParm(ts, "-OrphanFragSize ", CMD_SINGLE, CMD_OPTIONAL, "512");
 147     cmd_AddParm(ts, "-maxReceiveSize ", CMD_SINGLE, CMD_OPTIONAL, "");
 148     cmd_AddParm(ts, "-MyMaxSendSize ", CMD_SINGLE, CMD_OPTIONAL, "");
 149
 150     code = cmd_Dispatch(argc, argv);
 151     if (rxInitDone)
 152         rx_Finalize();
 153
 154     exit(code);
 155 }
 156
 157 static void
 158 Die(int code, char *filename)
 159 {                               /*Die */
 160
 161     if (errno == EINVAL) {
 162         if (filename)
 163             fprintf(stderr,
 164                     "%s: Invalid argument; it is possible that %s is not in AFS.\n",
 165                     pn, filename);
 166         else
 167             fprintf(stderr, "%s: Invalid argument.\n", pn);
 168     } else if (errno == ENOENT) {
 169         if (filename)
 170             fprintf(stderr, "%s: File '%s' doesn't exist\n", pn, filename);
 171         else
 172             fprintf(stderr, "%s: no such file returned\n", pn);
 173     } else if (errno == EROFS)
 174         fprintf(stderr,
 175                 "%s: You can not change a backup or readonly volume\n", pn);
 176     else if (errno == EACCES || errno == EPERM) {
 177         if (filename)
 178             fprintf(stderr,
 179                     "%s: You don't have the required access rights on '%s'\n",
 180                     pn, filename);
 181         else
 182             fprintf(stderr,
 183                     "%s: You do not have the required rights to do this operation\n",
 184                     pn);
 185     } else {
 186         if (filename)
 187             fprintf(stderr, "%s:'%s'", pn, filename);
 188         else
 189             fprintf(stderr, "%s", pn);
 190         fprintf(stderr, ": %s\n", afs_error_message(errno));
 191     }
 192 }                               /*Die */