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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