File lsscsi-0.21-usb-transport of Package lsscsi

Index: lsscsi.c
===================================================================
--- lsscsi.c.orig
+++ lsscsi.c
@@ -39,8 +39,9 @@ static const char * version_str = "0.21 
 #define TRANSPORT_SAS 3
 #define TRANSPORT_SAS_CLASS 4
 #define TRANSPORT_ISCSI 5
 #define TRANSPORT_SBP 6
+#define TRANSPORT_USB 6
 
 static int transport_id = TRANSPORT_UNKNOWN;
 
 
@@ -49,8 +50,9 @@ static const char * sysfs_name = "sysfs"
 static const char * sysfs_test_dir = "/sys/class";
 static const char * sysfs_test_top = "/sys";
 static const char * proc_mounts = "/proc/mounts";
 static const char * bus_scsi_devs = "/bus/scsi/devices";
+static const char * bus_usb_devs = "/bus/usb/devices";
 static const char * class_scsi_dev = "/class/scsi_device/";
 static const char * scsi_host = "/class/scsi_host";
 static const char * spi_host = "/class/spi_host/";
 static const char * spi_transport = "/class/spi_transport/";
@@ -894,8 +925,50 @@ transport_init(const char * devname, /* 
 //           host output?
 //           Hmmm, probably would like SAM-4 ",i,0x" notation here.
                 return 1;
         }
+
+        /* USB host */
+        do {
+                char *t, buff2[NAME_LEN_MAX];
+
+                /* resolve SCSI host device */
+                strcpy(buff, sysfsroot);
+                strcat(buff, scsi_host);
+                strcat(buff, "/");
+                strcat(buff, devname);
+                strcat(buff, "/device");
+                if (readlink(buff, buff2, sizeof(buff2)) <= 0)
+                        break;
+
+                /* check if the SCSI host has a USB host as ancestor */
+                if (!(t = strstr(buff2, "/usb")))
+                        break;
+                transport_id = TRANSPORT_USB;
+
+		/* Get USB id */
+		if (!(t = strstr(buff2, "/host")))
+			break;
+                /* terminate buff2 after USB host */
+		if (!(t = strchr(t - 1, '/')))
+			break;
+                *t = 0;
+
+                /* resolve USB host device */
+                buff[strlen(buff) - strlen("device")] = 0;
+                if (strlen(buff) + strlen(buff2) + strlen("devnum") + 2
+                    > NAME_LEN_MAX)
+                        break;
+                strcat(buff, buff2);
+
+                /* read the USB device number */
+                if (!get_value(buff, "devnum", buff2, sizeof(buff)) ||
+                    strlen(buff2) < 1)
+                        break;
+                snprintf(b, b_len, "usb:%s", buff2);
+                return 1;
+        } while (0);
+
         return 0;
 }
 
 static void
@@ -1146,9 +1219,9 @@ transport_tport(const char * devname,
                 /* IEEE1394 SBP device */
                 transport_id = TRANSPORT_SBP;
                 snprintf(b, b_len, "sbp:%s", wd);
                 return 1;
-        }
+	}
         /* iSCSI device? */
         strcpy(buff, sysfsroot);
         strcat(buff, iscsi_host);
         off = strlen(buff);
@@ -1172,8 +1245,40 @@ transport_tport(const char * devname,
 // >>>       That reference says maximum length of targetname is 223 bytes
 //           (UTF-8) excluding trailing null.
                 return 1;
         }
+	/* USB device? */
+	strcpy(buff, sysfsroot);
+	strcat(buff, bus_scsi_devs);
+	if (if_directory_chdir(buff, devname)) {
+		if (NULL == getcwd(wd, NAME_LEN_MAX))
+			return 0;
+		if (!(cp = strstr(wd, "/usb")))
+			return 0;
+		transport_id = TRANSPORT_USB;
+		if (!(cp = strstr(wd, "/host")))
+			return 0;
+		*cp = 0;
+		if (!(cp = strrchr(wd, ':')))
+			return 0;
+		*cp = 0;
+		cp = basename(wd);
+		strcpy(buff, sysfsroot);
+		strcat(buff, bus_usb_devs);
+		strcat(buff, "/");
+		strcat(buff, cp);
+		if (sscanf(cp, "%d-%*d", &n) != 1)
+			return 0;
+
+		snprintf(b, b_len, "usb:%d-", n);
+		off = strlen(b);
+		if (get_value(buff, "devnum", b + off, b_len + off))
+			return 1;
+		else
+			fprintf(stderr, "_tport: no "
+				"usb bus id, wd=%s\n", buff);
+	}
+
         return 0;
 }
 
 static void