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Prefer udev to handle /dev if mdev is also available on the system

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Some systems, usually those built around BusyBox, have mdev installed
but have an option to install udev.  In those cases the user likely
prefers to use udev over mdev and this patch addresses that.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
2018-02-17 16:06:22 +01:00
parent 93a21197ab
commit dedf885b92
1 changed files with 21 additions and 20 deletions
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src/finit.c
+21 -20
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@@ -374,31 +374,32 @@ int main(int argc, char* argv[])
/*
* Populate /dev and prepare for runtime events from kernel.
* Prefer udev if mdev is also available on the system.
*/
path = which("mdev");
path = which("udevd");
if (!path)
path = which("/lib/systemd/systemd-udevd");
if (path) {
/* Embedded Linux systems usually have BusyBox mdev */
if (log_is_debug())
touch("/dev/mdev.log");
snprintf(cmd, sizeof(cmd), "%s -s", path);
} else {
/* Desktop and server distros usually have a variant of udev */
path = which("udevd");
if (!path)
path = which("/lib/systemd/systemd-udevd");
udev = 1;
/* Register udevd as a monitored service, started much later */
snprintf(cmd, sizeof(cmd), "[12345] %s -- Device event manager daemon", path);
if (service_register(SVC_TYPE_SERVICE, cmd, global_rlimit, NULL)) {
_pe("Failed registering %s", path);
udev = 0;
}
/* Start a temporary udevd instance to populate /dev */
snprintf(cmd, sizeof(cmd), "%s --daemon", path);
} else {
path = which("mdev");
if (path) {
udev = 1;
/* Embedded Linux systems usually have BusyBox mdev */
if (log_is_debug())
touch("/dev/mdev.log");
/* Register udevd as a monitored service, started much later */
snprintf(cmd, sizeof(cmd), "[12345] %s -- Device event manager daemon", path);
if (service_register(SVC_TYPE_SERVICE, cmd, global_rlimit, NULL)) {
_pe("Failed registering %s", path);
udev = 0;
}
/* Start a temporary udevd instance to populate /dev */
snprintf(cmd, sizeof(cmd), "%s --daemon", path);
snprintf(cmd, sizeof(cmd), "%s -s", path);
}
}