/** Read the domainID of the subExp1 from the mgrExp1 over the
* vChan.
* This routine will block until the domainID is retrieved from
* the mgr.
* return - the domainID. On any failure exit(1) is called.
**/
int readSubExp1DomainID( xentoollog_logger * xc_logger, struct libxenvchan * ctrl) {
char buf[DOMAIN_ID_CHAR_LEN + 1];
int size = DOMAIN_ID_CHAR_LEN;
char * invalidChar;
int domainID;
// Read the subExp1 domain ID from mgrExp1 vchan client.
// The domainID has to be right justified for the following error
// checking to work. So the domainID number must be preceeded with
// white space or '0's.
size = libxenvchan_recv(ctrl, buf, size);
// Was there a system error?
if (size < 0) {
// There was a significant error. Abort.
fprintf(stderr, "libxenvchan_read return=%d.\n", size);
perror("readSubDomain: read failed for mgrExp1.");
libxenvchan_close(ctrl);
exit(1);
}
// Did we get all of the characters of the domainID number string?
if (size != DOMAIN_ID_CHAR_LEN) {
fprintf(stderr, "readSubDomain: We expected to read %d characters for the"
"subExp1 domain ID but got %d from mgrExp1\n",
DOMAIN_ID_CHAR_LEN, size);
libxenvchan_close(ctrl);
exit(1);
}
buf[DOMAIN_ID_CHAR_LEN] = 0; // put null at end of string so we have a valid C string.
// Convert the string to an integer.
domainID = strtol(buf, &invalidChar, 10);
if ( *invalidChar != '\0' ) {
fprintf(stderr, "readSubDomain: There was an invalid character in the domainID. The invalid portion of the domainID is '%s'.\n", invalidChar);
libxenvchan_close(ctrl);
exit(1);
}
return domainID;
}
//####################################################################
int readClientMessage(xentoollog_logger * xc_logger, struct libxenvchan * ctrl,
char * msg, int * sz) {
int result = 0;
int size;
//char * invalidChar;
//char * buf = (char *) malloc (sizeof(char) * (*sz));
//int i = 0;
/*
fprintf(stdout,"size:%d\n", *sz);
*/
size = libxenvchan_recv(ctrl, msg, *sz);
/*
fprintf(stdout,"Receive strlen: %d\n",size);
fprintf(stdout,"%s",msg);
fprintf(stdout,"HEXDUMP\n");
for (i = 0; i < size; i++){
fprintf(stdout,"%02x ",msg[i]);
}
fprintf(stdout,"\n");
*/
*sz = size;
// Was there a system error?
if (size < 0) {
// There was a significant error. Abort.
fprintf(stderr, "libxenvchan_recv return=%d.\n", size);
perror("serverExp1: read failed for clientExp1.");
exit(1);
}
/*
// Did we get all of the characters in the message.
if (size != EXP1_MSG_LEN) {
fprintf(stderr, "serverExp1: We expected to read %d characters for the"
"clientExp1 but got %d from clientExp1\n",
EXP1_MSG_LEN, size);
exit(1);
}
*/
// msg[size] = 0; // put null at end of string so we have a valid C string.
// Convert the string to an integer.
return result;
}
int libvchan_recv(libvchan_t *ctrl, void *data, size_t size) {
return libxenvchan_recv(ctrl->xenvchan, (char*)data, size);
}
