rom/filesys/SFS/SetCache/SetCache.c

   1 #include <dos/dos.h>
   2 #include <dos/dosextens.h>
   3 #include <proto/dos.h>
   4 #include <proto/exec.h>
   5 #include <utility/tagitem.h>
   6
   7 #include "../FS/packets.h"
   8 #include "../FS/query.h"
   9
  10 const char version[]="\0$VER: SetCache 1.2 (" ADATE ")\r\n";
  11
  12 int main()
  13 {
  14     struct RDArgs *readarg;
  15     UBYTE template[]="DEVICE/A,LINES/N,READAHEAD/N,NOCOPYBACK/S\n";
  16
  17     struct {char *name;
  18           ULONG *lines;
  19           ULONG *readahead;
  20           IPTR nocopyback;} arglist={NULL};
  21
  22     if((DOSBase=(struct DosLibrary *)OpenLibrary("dos.library",37))!=0) {
  23         if((readarg=ReadArgs(template,(IPTR *)&arglist,0))!=0) {
  24             struct MsgPort *msgport;
  25             struct DosList *dl;
  26             UBYTE *devname=arglist.name;
  27
  28             while(*devname!=0) {
  29                 if(*devname==':') {
  30                     *devname=0;
  31                     break;
  32                 }
  33             devname++;
  34             }
  35
  36             dl=LockDosList(LDF_DEVICES|LDF_READ);
  37             if((dl=FindDosEntry(dl,arglist.name,LDF_DEVICES))!=0) {
  38                 ULONG copyback=1;
  39                 LONG errorcode;
  40                 msgport=dl->dol_Task;
  41                 UnLockDosList(LDF_DEVICES|LDF_READ);
  42
  43                 if(arglist.lines!=0 || arglist.readahead!=0 || arglist.nocopyback!=0) {
  44                     struct TagItem tags[]={
  45                         {ASQ_CACHE_LINES        , 0},
  46                         {ASQ_CACHE_READAHEADSIZE, 0},
  47                         {ASQ_CACHE_MODE         , 0},
  48                         {TAG_END                , 0}
  49                     };
  50
  51                     if((errorcode=DoPkt(msgport, ACTION_SFS_QUERY, (SIPTR)&tags, 0, 0, 0, 0))!=DOSFALSE) {
  52                         ULONG lines,readahead;
  53
  54                         lines=tags[0].ti_Data;
  55                         readahead=tags[1].ti_Data;
  56
  57                         if(arglist.nocopyback!=0) {
  58                             copyback=0;
  59                         }
  60
  61                         if(arglist.lines!=0) {
  62                             lines=*arglist.lines;
  63                         }
  64
  65                         if(arglist.readahead!=0) {
  66                             readahead=*arglist.readahead;
  67                         }
  68
  69                         Printf("Setting cache to %ld lines ", lines);
  70                         Printf("of %ld bytes and copyback mode ", readahead);
  71                         if(copyback!=0) {
  72                             PutStr("enabled.\n");
  73                         }
  74                         else {
  75                             PutStr("disabled.\n");
  76                         }
  77
  78                         if((errorcode=DoPkt(msgport,ACTION_SET_CACHE, lines, readahead, copyback, 0, 0))==DOSFALSE) {
  79                             PrintFault(IoErr(),"error while setting new cache size");
  80                         }
  81                     }
  82                     else {
  83                         PrintFault(IoErr(),"error while reading old cache settings");
  84                     }
  85                 }
  86
  87                 {
  88                     struct TagItem tags[]={
  89                         {ASQ_CACHE_LINES        , 0},
  90                         {ASQ_CACHE_READAHEADSIZE, 0},
  91                         {ASQ_CACHE_MODE         , 0}
  92                     };
  93
  94                     if((errorcode=DoPkt(msgport, ACTION_SFS_QUERY, (SIPTR)&tags, 0, 0, 0, 0))!=DOSFALSE) {
  95                         Printf("Current cache settings: %ld lines,", (ULONG)tags[0].ti_Data);
  96                         Printf(" %ld bytes readahead, ", (ULONG)tags[1].ti_Data);
  97                         if(tags[2].ti_Data==0) {
  98                             PutStr("no copyback.\n");
  99                         }
 100                         else {
 101                             PutStr("copyback.\n");
 102                         }
 103                     }
 104                 }
 105             }
 106             else {
 107                 Printf("Couldn't find device '%s:'.\n",arglist.name);
 108                 UnLockDosList(LDF_DEVICES|LDF_READ);
 109             }
 110
 111             FreeArgs(readarg);
 112         }
 113         else {
 114             PutStr("Wrong arguments!\n");
 115         }
 116         CloseLibrary((struct Library *)DOSBase);
 117     }
 118     return(0);
 119 }