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rpcrt4: Try to avoid partial named pipe read/writes by looping.

This commit is contained in:
Rob Shearman 2007-01-22 21:50:24 +00:00 committed by Alexandre Julliard
parent 9fb15b4105
commit e6f4514512
1 changed files with 28 additions and 9 deletions
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37
dlls/rpcrt4/rpc_transport.c
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@ -354,21 +354,40 @@ static int rpcrt4_conn_np_read(RpcConnection *Connection,
void *buffer, unsigned int count)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
DWORD dwRead = 0;
if (!ReadFile(npc->pipe, buffer, count, &dwRead, NULL) &&
(GetLastError() != ERROR_MORE_DATA))
return -1;
return dwRead;
char *buf = buffer;
BOOL ret = TRUE;
unsigned int bytes_left = count;
while (bytes_left)
{
DWORD bytes_read;
ret = ReadFile(npc->pipe, buf, bytes_left, &bytes_read, NULL);
if (!ret || !bytes_read)
break;
bytes_left -= bytes_read;
buf += bytes_read;
}
return ret ? count : -1;
}
static int rpcrt4_conn_np_write(RpcConnection *Connection,
const void *buffer, unsigned int count)
{
RpcConnection_np *npc = (RpcConnection_np *) Connection;
DWORD dwWritten = 0;
if (!WriteFile(npc->pipe, buffer, count, &dwWritten, NULL))
return -1;
return dwWritten;
const char *buf = buffer;
BOOL ret = TRUE;
unsigned int bytes_left = count;
while (bytes_left)
{
DWORD bytes_written;
ret = WriteFile(npc->pipe, buf, count, &bytes_written, NULL);
if (!ret || !bytes_written)
break;
bytes_left -= bytes_written;
buf += bytes_written;
}
return ret ? count : -1;
}
static int rpcrt4_conn_np_close(RpcConnection *Connection)