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usb-host: parse port in /proc/bus/usb/devices scan 

Unfortunaly this is limited to root ports.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2011-08-17 23:36:46 +02:00
parent ba9acab9bf
commit 0c402e5abb
1 changed files with 13 additions and 3 deletions
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16
usb-linux.c
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@ -1483,7 +1483,8 @@ static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
FILE *f = NULL;
char line[1024];
char buf[1024];
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
int bus_num, addr, speed, device_count;
int class_id, product_id, vendor_id, port;
char product_name[512];
int ret = 0;
@ -1499,7 +1500,7 @@ static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
}
device_count = 0;
bus_num = addr = class_id = product_id = vendor_id = 0;
bus_num = addr = class_id = product_id = vendor_id = port = 0;
speed = -1; /* Can't get the speed from /[proc|dev]/bus/usb/devices */
for(;;) {
if (fgets(line, sizeof(line), f) == NULL) {
@ -1521,6 +1522,10 @@ static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
goto fail;
}
bus_num = atoi(buf);
if (get_tag_value(buf, sizeof(buf), line, "Port=", " ") < 0) {
goto fail;
}
port = atoi(buf);
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) {
goto fail;
}
@ -1566,7 +1571,12 @@ static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
}
if (device_count && (vendor_id || product_id)) {
/* Add the last device. */
ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
if (port > 0) {
snprintf(buf, sizeof(buf), "%d", port);
} else {
snprintf(buf, sizeof(buf), "?");
}
ret = func(opaque, bus_num, addr, buf, class_id, vendor_id,
product_id, product_name, speed);
}
the_end: