/* This is called from the forked subprocess just before vmlinux runs,
* so it can just print the message straight to stderr, where it will
* be picked up and funnelled through the usual appliance event API.
*/
static void
print_vmlinux_command_line (guestfs_h *g, char **argv)
{
size_t i = 0;
int needs_quote;
struct timeval tv;
gettimeofday (&tv, NULL);
fprintf (stderr, "[%05" PRIi64 "ms] ",
guestfs_int_timeval_diff (&g->launch_t, &tv));
while (argv[i]) {
if (i > 0) fputc (' ', stderr);
/* Does it need shell quoting? This only deals with simple cases. */
needs_quote = strcspn (argv[i], " ") != strlen (argv[i]);
if (needs_quote) fputc ('\'', stderr);
fprintf (stderr, "%s", argv[i]);
if (needs_quote) fputc ('\'', stderr);
i++;
}
fputc ('\n', stderr);
}
/**
* This function sends a launch progress message.
*
* Launching the appliance generates approximate progress
* messages. Currently these are defined as follows:
*
* 0 / 12: launch clock starts
* 3 / 12: appliance created
* 6 / 12: detected that guest kernel started
* 9 / 12: detected that /init script is running
* 12 / 12: launch completed successfully
*
* Notes:
*
* =over 4
*
* =item 1.
*
* This is not a documented ABI and the behaviour may be changed
* or removed in future.
*
* =item 2.
*
* Messages are only sent if more than 5 seconds has elapsed
* since the launch clock started.
*
* =item 3.
*
* There is a hack in F<src/proto.c> to make this work.
*
* =back
*/
void
guestfs_int_launch_send_progress (guestfs_h *g, int perdozen)
{
struct timeval tv;
gettimeofday (&tv, NULL);
if (guestfs_int_timeval_diff (&g->launch_t, &tv) >= 5000) {
guestfs_progress progress_message =
{ .proc = 0, .serial = 0, .position = perdozen, .total = 12 };
guestfs_int_progress_message_callback (g, &progress_message);
}
}
/**
* Test C<guestfs_int_timeval_diff>.
*/
static void
test_timeval_diff (void)
{
struct timeval x, y;
int64_t ms;
y.tv_sec = 1;
y.tv_usec = 0;
x.tv_sec = 0;
x.tv_usec = 0;
ms = guestfs_int_timeval_diff (&x, &y);
assert (ms == 1000);
y.tv_sec = 0;
y.tv_usec = 0;
x.tv_sec = 1;
x.tv_usec = 0;
ms = guestfs_int_timeval_diff (&x, &y);
assert (ms == -1000);
y.tv_sec = 1;
y.tv_usec = 0;
x.tv_sec = 0;
x.tv_usec = 900000;
ms = guestfs_int_timeval_diff (&x, &y);
assert (ms == 100);
y.tv_sec = 0;
y.tv_usec = 900000;
x.tv_sec = 1;
x.tv_usec = 0;
ms = guestfs_int_timeval_diff (&x, &y);
assert (ms == -100);
y.tv_sec = 1;
y.tv_usec = 100000;
x.tv_sec = 0;
x.tv_usec = 900000;
ms = guestfs_int_timeval_diff (&x, &y);
assert (ms == 200);
y.tv_sec = 0;
y.tv_usec = 900000;
x.tv_sec = 1;
x.tv_usec = 100000;
ms = guestfs_int_timeval_diff (&x, &y);
assert (ms == -200);
}
