On 16/01/2015 21:19, Owen Kirby wrote:
> Okay, I'll rewrite it.
>
> However: Is it polling for the existence of the tty device that is
> unacceptable (would a solution using uloop_timeout_set() be okay?),
> or would I need to process hotplug events from the kernel?
>
use hotplug events please
> Thanks, Owen
>
> On 15-01-15 10:31 PM, John Crispin wrote:
>> nack, using magic delays is a no go
>>
>> On 16/01/2015 04:15, Owen Kirby wrote:
>>> If a process with a tty is specified in inittab, delay the
>>> worker process until the tty exists.
>>>
>>> This allows starting consoles with terminals that get delayed
>>> until after procd is reads inittab, and it also allows
>>> hotplugging USB-to-serial adapters attached long after
>>> booting.
>>>
>>> Signed-off-by: Owen Kirby <o...@exegin.com> --- inittab.c | 14
>>> ++++++++++---- 1 file changed, 10 insertions(+), 4
>>> deletions(-)
>>>
>>> diff --git a/inittab.c b/inittab.c index 623103d..73c113f
>>> 100644 --- a/inittab.c +++ b/inittab.c @@ -99,9 +99,15 @@
>>> static void fork_worker(struct init_action *a) if
>>> (!a->proc.pid) { p = setsid(); - fd = dev_open(a->id); -
>>> if (fd != -1) - { + if (a->id) { +
>>> struct timespec tm; + tm.tv_sec = a->respawn /
>>> 1000; + tm.tv_nsec = (a->respawn % 1000) * 1000000;
>>> + + while ((fd = dev_open(a->id)) == -1) +
>>> if (nanosleep(&tm, NULL) == -1) + exit(-1);
>>> + dup2(fd, STDIN_FILENO); dup2(fd, STDOUT_FILENO); dup2(fd,
>>> STDERR_FILENO); @@ -157,7 +163,7 @@ static void askfirst(struct
>>> init_action *a) { int i; - if (!dev_exist(a->id) || (console
>>> && !strcmp(console, a->id))) { + if (console &&
>>> !strcmp(console, a->id)) { DEBUG(4, "Skipping %s\n", a->id);
>>> return; }
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