src/add-ons/kernel/file_systems/nfs/XDROutPacket.c

   1 #include "XDROutPacket.h"
   2
   3 #include <malloc.h>
   4 #include <string.h>
   5 #include <ByteOrder.h>
   6
   7 extern const uint8 *
   8 XDROutPacketBuffer(struct XDROutPacket *packet)
   9 {
  10         return packet->fBuffer;
  11 }
  12
  13 extern size_t
  14 XDROutPacketLength(struct XDROutPacket *packet)
  15 {
  16         return packet->fLength;
  17 }
  18
  19 extern void
  20 XDROutPacketInit(struct XDROutPacket *packet)
  21 {
  22         packet->fBuffer=NULL;
  23         packet->fSize=packet->fLength=0;
  24 }
  25
  26 extern void
  27 XDROutPacketDestroy(struct XDROutPacket *packet)
  28 {
  29         free (packet->fBuffer);
  30 }
  31
  32 extern void
  33 XDROutPacketGrow(struct XDROutPacket *packet, size_t size)
  34 {
  35         if (packet->fLength+size>packet->fSize)
  36         {
  37                 while (packet->fLength+size>packet->fSize)
  38                         packet->fSize+=XDROUTPACKET_BUFFER_INCREMENT;
  39
  40                 packet->fBuffer=(uint8 *)realloc(packet->fBuffer,packet->fSize);
  41         }
  42 }
  43
  44 extern void
  45 XDROutPacketAddInt32(struct XDROutPacket *packet, int32 val)
  46 {
  47         XDROutPacketGrow (packet,4);
  48         *(int32 *)(&packet->fBuffer[packet->fLength])=B_HOST_TO_BENDIAN_INT32(val);
  49         packet->fLength+=4;
  50 }
  51
  52 extern void
  53 XDROutPacketAddDynamic(struct XDROutPacket *packet, const void *data, size_t size)
  54 {
  55         XDROutPacketAddInt32 (packet,size);
  56         XDROutPacketAddFixed (packet,data,size);
  57 }
  58
  59 extern void
  60 XDROutPacketAddFixed(struct XDROutPacket *packet, const void *data, size_t size)
  61 {
  62         size_t roundedSize=(size+3)&~3;
  63         XDROutPacketGrow (packet,roundedSize);
  64         memcpy (&packet->fBuffer[packet->fLength],data,size);
  65         memset (&packet->fBuffer[packet->fLength+size],0,roundedSize-size);
  66         packet->fLength+=roundedSize;
  67 }
  68
  69 extern void
  70 XDROutPacketAddString(struct XDROutPacket *packet, const char *string)
  71 {
  72         XDROutPacketAddDynamic(packet,string,strlen(string));
  73 }
  74
  75 extern void
  76 XDROutPacketAppend(struct XDROutPacket *me, const struct XDROutPacket *packet)
  77 {
  78         XDROutPacketGrow (me,packet->fLength);
  79         memcpy (&me->fBuffer[me->fLength],packet->fBuffer,packet->fLength);
  80         me->fLength+=packet->fLength;
  81 }
  82
  83 extern void
  84 XDROutPacketClear(struct XDROutPacket *packet)
  85 {
  86         packet->fLength=0;
  87 }
  88