diff options
Diffstat (limited to 'init/devices.c')
| -rw-r--r-- | init/devices.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/init/devices.c b/init/devices.c index fa96f7c7f..663cdfebc 100644 --- a/init/devices.c +++ b/init/devices.c @@ -327,6 +327,7 @@ err: static void handle_device_event(struct uevent *uevent) { char devpath[96]; + int devpath_ready = 0; char *base, *name; char **links = NULL; int block; @@ -356,7 +357,26 @@ static void handle_device_event(struct uevent *uevent) } else { block = 0; /* this should probably be configurable somehow */ - if(!strncmp(uevent->subsystem, "graphics", 8)) { + if (!strncmp(uevent->subsystem, "usb", 3)) { + if (!strcmp(uevent->subsystem, "usb")) { + /* This imitates the file system that would be created + * if we were using devfs instead. + * Minors are broken up into groups of 128, starting at "001" + */ + int bus_id = uevent->minor / 128 + 1; + int device_id = uevent->minor % 128 + 1; + /* build directories */ + mkdir("/dev/bus", 0755); + mkdir("/dev/bus/usb", 0755); + snprintf(devpath, sizeof(devpath), "/dev/bus/usb/%03d", bus_id); + mkdir(devpath, 0755); + snprintf(devpath, sizeof(devpath), "/dev/bus/usb/%03d/%03d", bus_id, device_id); + devpath_ready = 1; + } else { + /* ignore other USB events */ + return; + } + } else if (!strncmp(uevent->subsystem, "graphics", 8)) { base = "/dev/graphics/"; mkdir(base, 0755); } else if (!strncmp(uevent->subsystem, "oncrpc", 6)) { @@ -386,7 +406,8 @@ static void handle_device_event(struct uevent *uevent) base = "/dev/"; } - snprintf(devpath, sizeof(devpath), "%s%s", base, name); + if (!devpath_ready) + snprintf(devpath, sizeof(devpath), "%s%s", base, name); if(!strcmp(uevent->action, "add")) { make_device(devpath, block, uevent->major, uevent->minor); |