qemu/qemu-0.9.0-nousbdevfs.patch

--- usb-linux.c	2006-07-22 19:23:34.000000000 +0200
+++ usb-linux.c	2007-02-03 09:26:48.000000000 +0100
@@ -50,7 +50,7 @@
 
 //#define DEBUG
 
-#define USBDEVFS_PATH "/proc/bus/usb"
+#define USBDEVFS_PATH "/dev/bus/usb"
 #define PRODUCT_NAME_SZ 32
 
 typedef struct USBHostDevice {
@@ -257,102 +257,96 @@
     return (USBDevice *)dev;
 }
 
-static int get_tag_value(char *buf, int buf_size,
-                         const char *str, const char *tag, 
-                         const char *stopchars)
-{
-    const char *p;
-    char *q;
-    p = strstr(str, tag);
-    if (!p)
-        return -1;
-    p += strlen(tag);
-    while (isspace(*p))
-        p++;
-    q = buf;
-    while (*p != '\0' && !strchr(stopchars, *p)) {
-        if ((q - buf) < (buf_size - 1))
-            *q++ = *p;
-        p++;
-    }
-    *q = '\0';
-    return q - buf;
-}
-
 static int usb_host_scan(void *opaque, USBScanFunc *func)
 {
     FILE *f;
     char line[1024];
-    char buf[1024];
-    int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
+    int bus_num, addr, speed, class_id, product_id, vendor_id;
     int ret;
     char product_name[512];
+    DIR* d;
+    struct dirent* de;
     
-    f = fopen(USBDEVFS_PATH "/devices", "r");
-    if (!f) {
-        term_printf("Could not open %s\n", USBDEVFS_PATH "/devices");
+    d = opendir("/sys/bus/usb/devices");
+    if (!d) {
+        term_printf("Could not open /sys/bus/usb/devices\n");
         return 0;
     }
-    device_count = 0;
-    bus_num = addr = speed = class_id = product_id = vendor_id = 0;
-    ret = 0;
-    for(;;) {
-        if (fgets(line, sizeof(line), f) == NULL)
-            break;
-        if (strlen(line) > 0)
-            line[strlen(line) - 1] = '\0';
-        if (line[0] == 'T' && line[1] == ':') {
-            if (device_count && (vendor_id || product_id)) {
-                /* New device.  Add the previously discovered device.  */
-                ret = func(opaque, bus_num, addr, class_id, vendor_id, 
-                           product_id, product_name, speed);
-                if (ret)
-                    goto the_end;
-            }
-            if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
-                goto fail;
-            bus_num = atoi(buf);
-            if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
-                goto fail;
-            addr = atoi(buf);
-            if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
-                goto fail;
-            if (!strcmp(buf, "480"))
+    while ((de = readdir(d))) {
+	if (de->d_name[0] != '.' && ! strchr(de->d_name, ':')) {
+	    char filename[PATH_MAX];
+	    char* tmpstr = de->d_name;
+	    if (!strncmp(de->d_name, "usb", 3))
+		tmpstr += 3;
+	    bus_num = atoi(tmpstr);
+	    snprintf(filename, PATH_MAX, "/sys/bus/usb/devices/%s/devnum", de->d_name);
+	    f = fopen(filename, "r");
+	    if (!f) {
+	        term_printf("Could not open %s\n", filename);
+	        return 0;
+	    }
+            fgets(line, sizeof(line), f);
+	    fclose(f);
+	    addr = atoi(line);
+	    snprintf(filename, PATH_MAX, "/sys/bus/usb/devices/%s/bDeviceClass", de->d_name);
+	    f = fopen(filename, "r");
+	    if (!f) {
+	        term_printf("Could not open %s\n", filename);
+	        return 0;
+	    }
+            fgets(line, sizeof(line), f);
+	    fclose(f);
+	    class_id = strtoul(line, NULL, 16);
+	    snprintf(filename, PATH_MAX, "/sys/bus/usb/devices/%s/idVendor", de->d_name);
+	    f = fopen(filename, "r");
+	    if (!f) {
+	        term_printf("Could not open %s\n", filename);
+	        return 0;
+	    }
+            fgets(line, sizeof(line), f);
+	    fclose(f);
+	    vendor_id = strtoul(line, NULL, 16);
+	    snprintf(filename, PATH_MAX, "/sys/bus/usb/devices/%s/idProduct", de->d_name);
+	    f = fopen(filename, "r");
+	    if (!f) {
+	        term_printf("Could not open %s\n", filename);
+	        return 0;
+	    }
+            fgets(line, sizeof(line), f);
+	    fclose(f);
+	    product_id = strtoul(line, NULL, 16);
+	    snprintf(filename, PATH_MAX, "/sys/bus/usb/devices/%s/product", de->d_name);
+	    f = fopen(filename, "r");
+	    if (f) {
+            	fgets(line, sizeof(line), f);
+	    	fclose(f);
+            	if (strlen(line) > 0)
+            	    line[strlen(line) - 1] = '\0';
+            	pstrcpy(product_name, sizeof(product_name), line);
+	    } else
+		*product_name = 0;
+	    snprintf(filename, PATH_MAX, "/sys/bus/usb/devices/%s/speed", de->d_name);
+	    f = fopen(filename, "r");
+	    if (!f) {
+	        term_printf("Could not open %s\n", filename);
+	        return 0;
+	    }
+            fgets(line, sizeof(line), f);
+	    fclose(f);
+            if (!strcmp(line, "480\n"))
                 speed = USB_SPEED_HIGH;
-            else if (!strcmp(buf, "1.5"))
+            else if (!strcmp(line, "1.5\n"))
                 speed = USB_SPEED_LOW;
             else
                 speed = USB_SPEED_FULL;
-            product_name[0] = '\0';
-            class_id = 0xff;
-            device_count++;
-            product_id = 0;
-            vendor_id = 0;
-        } else if (line[0] == 'P' && line[1] == ':') {
-            if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
-                goto fail;
-            vendor_id = strtoul(buf, NULL, 16);
-            if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
-                goto fail;
-            product_id = strtoul(buf, NULL, 16);
-        } else if (line[0] == 'S' && line[1] == ':') {
-            if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
-                goto fail;
-            pstrcpy(product_name, sizeof(product_name), buf);
-        } else if (line[0] == 'D' && line[1] == ':') {
-            if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
-                goto fail;
-            class_id = strtoul(buf, NULL, 16);
-        }
-    fail: ;
-    }
-    if (device_count && (vendor_id || product_id)) {
-        /* Add the last device.  */
-        ret = func(opaque, bus_num, addr, class_id, vendor_id, 
-                   product_id, product_name, speed);
+	    ret = func(opaque, bus_num, addr, class_id, vendor_id,
+                       product_id, product_name, speed);
+            if (ret)
+                goto the_end;
+	}
     }
  the_end:
-    fclose(f);
+    closedir(d);
     return ret;
 }