/*******************************************************************************
**
** Function select_read
**
** Description check if fd is ready for reading and listen for termination
** signal. need to use select in order to avoid collision
** between read and close on the same fd
**
** Returns -1: termination
** >=0: numbers of bytes read back from fd
**
*******************************************************************************/
static int select_read(int fd, uint8_t *pbuf, int len)
{
fd_set input;
int n = 0, ret = -1;
char reason = 0;
while (userial_running)
{
/* Initialize the input fd set */
FD_ZERO(&input);
if (rx_flow_on == TRUE)
{
FD_SET(fd, &input);
}
int fd_max = create_signal_fds(&input);
fd_max = fd_max > fd ? fd_max : fd;
/* Do the select */
n = select(fd_max+1, &input, NULL, NULL, NULL);
if(is_signaled(&input))
{
reason = reset_signal();
if (reason == USERIAL_RX_EXIT)
{
USERIALDBG("RX termination");
return -1;
}
else if (reason == USERIAL_RX_FLOW_OFF)
{
USERIALDBG("RX flow OFF");
rx_flow_on = FALSE;
}
else if (reason == USERIAL_RX_FLOW_ON)
{
USERIALDBG("RX flow ON");
rx_flow_on = TRUE;
}
}
if (n > 0)
{
/* We might have input */
if (FD_ISSET(fd, &input))
{
ret = read(fd, pbuf, (size_t)len);
if (0 == ret)
ALOGW( "read() returned 0!" );
return ret;
}
}
else if (n < 0)
ALOGW( "select() Failed");
else if (n == 0)
ALOGW( "Got a select() TIMEOUT");
}
return ret;
}
/*
* We got the hangup signal.
* Re-read the configuration files.
*/
static void sig_hup(int sig)
{
sig = sig; /* -Wunused */
reset_signal(SIGHUP, sig_hup);
radius_signal_self(RADIUS_SIGNAL_SELF_HUP);
}
static int pause_me(char *args)
{
// glctx_t *gcp = &glctx;
pause();
reset_signal();
return CMD_SUCCESS;
}
extern void activate_signal_handling (void) {
/* Set handler if not set */
if (! sig_handled) {
(void) signal(SIGINT, signal_handler);
(void) signal(SIGTERM, signal_handler);
(void) signal(SIGCHLD, signal_handler);
(void) signal(SIGDUMMY, signal_handler);
reset_signal();
sig_handled = TRUE;
}
}
/* Reset default unix behaviour */
extern int reset_default_signals (void) {
int res;
res = get_signal();
reset_signal();
if (sig_handled) {
(void) signal(SIGINT, SIG_DFL);
(void) signal(SIGTERM, SIG_DFL);
(void) signal(SIGCHLD, SIG_DFL);
(void) signal(SIGDUMMY, SIG_DFL);
sig_handled = FALSE;
}
return res;
}
/*
* We got the hangup signal.
* Re-read the configuration files.
*/
static void sig_hup(UNUSED int sig)
{
reset_signal(SIGHUP, sig_hup);
radius_signal_self(RADIUS_SIGNAL_SELF_HUP);
}
int segment_location(char *name, range_t * range)
{
glctx_t *gcp = &glctx;
segment_t *segp;
char *apage, *end;
off_t offset;
size_t length, maxlength;
int pgid, i;
bool need_nl;
segp = segment_get(name);
if (segp == NULL) {
fprintf(stderr, "%s: no such segment: %s\n",
gcp->program_name, name);
return SEG_ERR;
}
if (segp->seg_start == MAP_FAILED) {
fprintf(stderr, "%s: segment %s not mapped\n",
gcp->program_name, name);
return SEG_ERR;
}
offset = round_down_to_pagesize(range->offset);
if (offset >= segp->seg_length) {
fprintf(stderr, "%s: offset %ld is past end of segment %s\n",
gcp->program_name, offset, name);
return SEG_ERR;
}
apage = segp->seg_start + offset;
maxlength = segp->seg_length - offset;
length = range->length;
if (length)
length = round_up_to_pagesize(length);
/*
* note: we silently truncate to max length [end of segment]
*/
if (length == 0 || length > maxlength)
length = maxlength;
end = apage + length;
pgid = offset / gcp->pagesize;
show_one_segment(segp, false); /* show mapping, no header */
printf("page offset ");
for (i = 0; i < PG_PER_LINE; ++i)
printf(" +%02d", i);
printf("\n");
if (pgid & PPL_MASK) {
/*
* start partial line
*/
int pgid2 = pgid & ~PPL_MASK;
printf("%12x: ", pgid2);
while (pgid2 < pgid) {
printf(" ");
++pgid2;
}
need_nl = true;
} else
need_nl = false;
for (; apage < end; apage += gcp->pagesize, ++pgid) {
int node;
node = get_node(apage);
if (node < 0) {
fprintf(stderr, "\n%s: "
"failed to get node for segment %s, offset 0x%x\n",
gcp->program_name, name, SEG_OFFSET(segp,
apage));
return SEG_ERR;
}
if ((pgid & PPL_MASK) == 0) {
if (need_nl)
printf("\n");
printf("%12x: ", pgid); /* start a new line */
need_nl = true;
}
printf(" %3d", node);
if (signalled(gcp)) {
reset_signal();
break;
}
}
printf("\n");
return SEG_OK;
}
/*******************************************************************************
**
** Function userial_evt_read_thread
**
** Description The reading thread on EVT and ACL_IN channels
**
** Returns void *
**
*******************************************************************************/
static void *userial_read_thread(void *arg)
{
fd_set input;
int n;
char reason = 0;
USERIALDBG("Entering userial_read_thread()");
rx_flow_on = TRUE;
userial_running = 1;
raise_priority_a2dp(TASK_HIGH_USERIAL_READ);
while (userial_running)
{
/* Initialize the input fd set */
FD_ZERO(&input);
if (rx_flow_on == TRUE)
{
FD_SET(userial_cb.fd[CH_EVT], &input);
FD_SET(userial_cb.fd[CH_ACL_IN], &input);
}
int fd_max = create_signal_fds(&input);
fd_max = (fd_max>userial_cb.fd[CH_EVT]) ? fd_max : userial_cb.fd[CH_EVT];
fd_max = (fd_max>userial_cb.fd[CH_ACL_IN]) ? fd_max : userial_cb.fd[CH_ACL_IN];
/* Do the select */
n = 0;
n = select(fd_max+1, &input, NULL, NULL, NULL);
if(is_signaled(&input))
{
reason = reset_signal();
if (reason == USERIAL_RX_EXIT)
{
ALOGI("exiting userial_read_thread");
userial_running = 0;
break;
}
else if (reason == USERIAL_RX_FLOW_OFF)
{
USERIALDBG("RX flow OFF");
rx_flow_on = FALSE;
}
else if (reason == USERIAL_RX_FLOW_ON)
{
USERIALDBG("RX flow ON");
rx_flow_on = TRUE;
}
}
if (n > 0)
{
/* We might have input */
if (FD_ISSET(userial_cb.fd[CH_EVT], &input))
{
hci_mct_receive_evt_msg();
}
if (FD_ISSET(userial_cb.fd[CH_ACL_IN], &input))
{
hci_mct_receive_acl_msg();
}
}
else if (n < 0)
ALOGW( "select() Failed");
else if (n == 0)
ALOGW( "Got a select() TIMEOUT");
} /* while */
userial_running = 0;
USERIALDBG("Leaving userial_evt_read_thread()");
pthread_exit(NULL);
return NULL; // Compiler friendly
}
