static Bool
VMGuestLibIoctl(const GuestLibIoctlParam *param,
char **reply,
size_t *replySize)
{
XDR xdrs;
Bool ret;
static const char *request = VMGUESTLIB_IOCTL_COMMAND_STRING " ";
if (param == NULL || param->d >= GUESTLIB_IOCTL_MAX) {
return FALSE;
}
if (NULL == DynXdr_Create(&xdrs)) {
return FALSE;
}
if (!DynXdr_AppendRaw(&xdrs, request, strlen(request)) ||
!xdr_GuestLibIoctlParam(&xdrs, (GuestLibIoctlParam *)param)) {
DynXdr_Destroy(&xdrs, TRUE);
return FALSE;
}
ret = RpcChannel_SendOneRaw(DynXdr_Get(&xdrs), xdr_getpos(&xdrs),
reply, replySize);
DynXdr_Destroy(&xdrs, TRUE);
return ret;
}
gboolean
RpcChannel_SendOne(char **reply,
size_t *repLen,
char const *reqFmt,
...)
{
va_list args;
gboolean status;
char *request;
size_t reqLen = 0;
status = FALSE;
/* Format the request string */
va_start(args, reqFmt);
request = Str_Vasprintf(&reqLen, reqFmt, args);
va_end(args);
/*
* If Str_Vasprintf failed, write NULL into the reply if the caller wanted
* a reply back.
*/
if (request == NULL) {
goto error;
}
/*
* If the command doesn't contain a space, add one to the end to maintain
* compatibility with old VMXs.
*
* For a long time, the GuestRpc logic in the VMX was wired to expect a
* trailing space in every command, even commands without arguments. That is
* no longer true, but we must continue to add a trailing space because we
* don't know whether we're talking to an old or new VMX.
*/
if (request[reqLen - 1] != ' ') {
char *tmp;
tmp = Str_Asprintf(NULL, "%s ", request);
free(request);
request = tmp;
/*
* If Str_Asprintf failed, write NULL into reply if the caller wanted
* a reply back.
*/
if (request == NULL) {
goto error;
}
}
status = RpcChannel_SendOneRaw(request, reqLen, reply, repLen);
free(request);
return status;
error:
if (reply) {
*reply = NULL;
}
if (repLen) {
*repLen = 0;
}
return FALSE;
}
