/*
- * usb_id.c
- *
- * Identify an USB (block) device
+ * usb_id - identify an USB device
*
* Copyright (c) 2005 SUSE Linux Products GmbH, Germany
*
* Free Software Foundation version 2 of the License.
*/
+#include <config.h>
+
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
+#include <getopt.h>
-#include "../../udev.h"
+#include "../../udev/udev.h"
#define MAX_PATH_LEN 512
#define MAX_SERIAL_LEN 256
#define BLKGETSIZE64 _IOR(0x12,114,size_t)
-#ifdef USE_LOG
-void log_message(int priority, const char *format, ...)
+static void log_fn(struct udev *udev, int priority,
+ const char *file, int line, const char *fn,
+ const char *format, va_list args)
{
- va_list args;
- static int udev_log = -1;
-
- if (udev_log == -1) {
- const char *value;
-
- value = getenv("UDEV_LOG");
- if (value)
- udev_log = log_priority(value);
- else
- udev_log = LOG_ERR;
- }
-
- if (priority > udev_log)
- return;
-
- va_start(args, format);
vsyslog(priority, format, args);
- va_end(args);
}
-#endif
static char vendor_str[64];
static char model_str[64];
static char serial_str[MAX_SERIAL_LEN];
-static char revision_str[16];
-static char type_str[16];
+static char revision_str[64];
+static char type_str[64];
+static char instance_str[64];
static int use_usb_info;
static int use_num_info;
-static int export;
-static int debug;
static void set_str(char *to, const char *from, size_t count)
{
to[j] = '\0';
}
-/*
- * set_usb_iftype
- *
- * Set the type based on the USB interface class
- */
-static void set_usb_iftype(char *to, const char *from, size_t len)
+static void set_usb_iftype(char *to, int if_class_num, size_t len)
{
- int type_num;
- char *eptr;
char *type = "generic";
- type_num = strtoul(from, &eptr, 0);
- if (eptr != from) {
- switch (type_num) {
- case 1:
- type = "audio";
- break;
- case 3:
- type = "hid";
- break;
- case 7:
- type = "printer";
- break;
- case 8:
- type = "disk";
- break;
- case 2: /* CDC-Control */
- case 5: /* Physical */
- case 6: /* Image */
- case 9: /* HUB */
- case 0x0a: /* CDC-Data */
- case 0x0b: /* Chip/Smart Card */
- case 0x0d: /* Content Security */
- case 0x0e: /* Video */
- case 0xdc: /* Diagnostic Device */
- case 0xe0: /* Wireless Controller */
- case 0xf2: /* Application-specific */
- case 0xff: /* Vendor-specific */
- default:
- break;
- }
+ switch (if_class_num) {
+ case 1:
+ type = "audio";
+ break;
+ case 3:
+ type = "hid";
+ break;
+ case 7:
+ type = "printer";
+ break;
+ case 8:
+ type = "storage";
+ break;
+ case 2: /* CDC-Control */
+ case 5: /* Physical */
+ case 6: /* Image */
+ case 9: /* HUB */
+ case 0x0a: /* CDC-Data */
+ case 0x0b: /* Chip/Smart Card */
+ case 0x0d: /* Content Security */
+ case 0x0e: /* Video */
+ case 0xdc: /* Diagnostic Device */
+ case 0xe0: /* Wireless Controller */
+ case 0xf2: /* Application-specific */
+ case 0xff: /* Vendor-specific */
+ break;
+ default:
+ break;
}
strncpy(to, type, len);
to[len-1] = '\0';
}
-/*
- * set_usb_ifsybtype
- *
- * Set the type base on the interfaceSubClass.
- * Valid for Mass-Storage devices (type 8) only.
- */
-static int set_usb_ifsubtype(char *to, const char *from, size_t len)
+static int set_usb_mass_storage_ifsubtype(char *to, const char *from, size_t len)
{
int type_num = 0;
char *eptr;
break;
}
}
- strncpy(to, type, len);
- to[len-1] = '\0';
+ strlcpy(to, type, len);
return type_num;
}
-static void set_scsi_type(char *to, const char *from, int count)
+static void set_scsi_type(char *to, const char *from, size_t len)
{
int type_num;
char *eptr;
+ char *type = "generic";
type_num = strtoul(from, &eptr, 0);
if (eptr != from) {
switch (type_num) {
case 0:
- sprintf(to, "disk");
+ case 0xe:
+ type = "disk";
break;
case 1:
- sprintf(to, "tape");
+ type = "tape";
break;
case 4:
- sprintf(to, "optical");
- break;
- case 5:
- sprintf(to, "cd");
- break;
case 7:
- sprintf(to, "optical");
- break;
- case 0xe:
- sprintf(to, "disk");
- break;
case 0xf:
- sprintf(to, "optical");
+ type = "optical";
+ break;
+ case 5:
+ type = "cd";
break;
default:
- sprintf(to, "generic");
break;
}
- } else {
- sprintf(to, "generic");
}
+ strlcpy(to, type, len);
}
/*
* 6.) If the device supplies a serial number, this number
* is concatenated with the identification with an underscore '_'.
*/
-static int usb_id(const char *devpath)
+static int usb_id(struct udev *udev, const char *devpath)
{
struct sysfs_device *dev;
- struct sysfs_device *dev_scsi;
- struct sysfs_device *dev_target;
- struct sysfs_device *dev_host;
struct sysfs_device *dev_interface;
struct sysfs_device *dev_usb;
- const char *scsi_model, *scsi_vendor, *scsi_type, *scsi_rev;
- const char *usb_model = NULL, *usb_vendor = NULL, *usb_rev, *usb_serial;
const char *if_class, *if_subclass;
int if_class_num;
int protocol = 0;
dbg("devpath %s\n", devpath);
- dev = sysfs_device_get(devpath);
+ /* get all usb specific information: dev_interface, if_class, dev_usb */
+ dev = sysfs_device_get(udev, devpath);
if (dev == NULL) {
- err("unable to access '%s'", devpath);
+ err(udev, "unable to access '%s'\n", devpath);
return 1;
}
- /* get scsi parent device */
- dev_scsi = sysfs_device_get_parent_with_subsystem(dev, "scsi");
- if (dev_scsi == NULL) {
- err("unable to find parent 'scsi' device of '%s'", devpath);
- return 1;
- }
-
- /* target directory */
- dev_target = sysfs_device_get_parent(dev_scsi);
- if (dev_target == NULL) {
- err("unable to access parent device of '%s'", devpath);
+ /* usb interface directory */
+ dev_interface = sysfs_device_get_parent_with_subsystem(udev, dev, "usb");
+ if (dev_interface == NULL) {
+ info(udev, "unable to access usb_interface device of '%s'\n", devpath);
return 1;
}
- /* host directory */
- dev_host = sysfs_device_get_parent(dev_target);
- if (dev_host == NULL) {
- err("unable to access parent device of '%s'", devpath);
+ if_class = sysfs_attr_get_value(udev, dev_interface->devpath, "bInterfaceClass");
+ if (!if_class) {
+ info(udev, "%s: cannot get bInterfaceClass attribute\n", dev_interface->kernel);
return 1;
}
+ if_class_num = strtoul(if_class, NULL, 16);
+ if (if_class_num == 8) {
+ if_subclass = sysfs_attr_get_value(udev, dev_interface->devpath, "bInterfaceSubClass");
+ if (if_subclass != NULL)
+ protocol = set_usb_mass_storage_ifsubtype(type_str, if_subclass, sizeof(type_str)-1);
+ } else
+ set_usb_iftype(type_str, if_class_num, sizeof(type_str)-1);
- /* usb interface directory */
- dev_interface = sysfs_device_get_parent_with_subsystem(dev_host, "usb");
- if (dev_interface == NULL) {
- err("unable to access parent device of '%s'", devpath);
- return 1;
- }
+ info(udev, "%s: if_class %d protocol %d\n", dev_interface->devpath, if_class_num, protocol);
/* usb device directory */
- dev_usb = sysfs_device_get_parent_with_subsystem(dev_interface, "usb");
- if (dev_usb == NULL) {
- err("unable to find parent 'usb' device of '%s'", devpath);
+ dev_usb = sysfs_device_get_parent_with_subsystem(udev, dev_interface, "usb");
+ if (!dev_usb) {
+ info(udev, "unable to find parent 'usb' device of '%s'\n", devpath);
return 1;
}
- if_class = sysfs_attr_get_value(dev_interface->devpath, "bInterfaceClass");
- if (!if_class) {
- info("%s: cannot get bInterfaceClass attribute", dev_interface->kernel_name);
- return 1;
- }
- if_class_num = strtoul(if_class, NULL, 16);
- if (if_class_num != 8) {
- set_usb_iftype(type_str, if_class, sizeof(type_str)-1);
- protocol = 0;
- } else {
- if_subclass = sysfs_attr_get_value(dev_interface->devpath, "bInterfaceSubClass");
- protocol = set_usb_ifsubtype(type_str, if_subclass, sizeof(type_str)-1);
- }
+ /* mass storage */
+ if (protocol == 6 && !use_usb_info) {
+ struct sysfs_device *dev_scsi;
+ const char *scsi_model, *scsi_vendor, *scsi_type, *scsi_rev;
+ int host, bus, target, lun;
+
+ /* get scsi device */
+ dev_scsi = sysfs_device_get_parent_with_subsystem(udev, dev, "scsi");
+ if (dev_scsi == NULL) {
+ info(udev, "unable to find parent 'scsi' device of '%s'\n", devpath);
+ goto fallback;
+ }
+ if (sscanf(dev_scsi->kernel, "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4) {
+ info(udev, "invalid scsi device '%s'\n", dev_scsi->kernel);
+ goto fallback;
+ }
- if (!use_usb_info && protocol == 6) {
/* Generic SPC-2 device */
- scsi_vendor = sysfs_attr_get_value(dev_scsi->devpath, "vendor");
+ scsi_vendor = sysfs_attr_get_value(udev, dev_scsi->devpath, "vendor");
if (!scsi_vendor) {
- info("%s: cannot get SCSI vendor attribute", dev_scsi->kernel_name);
- return 1;
+ info(udev, "%s: cannot get SCSI vendor attribute\n", dev_scsi->kernel);
+ goto fallback;
}
set_str(vendor_str, scsi_vendor, sizeof(vendor_str)-1);
- scsi_model = sysfs_attr_get_value(dev_scsi->devpath, "model");
+ scsi_model = sysfs_attr_get_value(udev, dev_scsi->devpath, "model");
if (!scsi_model) {
- info("%s: cannot get SCSI model attribute", dev_scsi->kernel_name);
- return 1;
+ info(udev, "%s: cannot get SCSI model attribute\n", dev_scsi->kernel);
+ goto fallback;
}
set_str(model_str, scsi_model, sizeof(model_str)-1);
- scsi_type = sysfs_attr_get_value(dev_scsi->devpath, "type");
+ scsi_type = sysfs_attr_get_value(udev, dev_scsi->devpath, "type");
if (!scsi_type) {
- info("%s: cannot get SCSI type attribute", dev_scsi->kernel_name);
- return 1;
+ info(udev, "%s: cannot get SCSI type attribute\n", dev_scsi->kernel);
+ goto fallback;
}
set_scsi_type(type_str, scsi_type, sizeof(type_str)-1);
- scsi_rev = sysfs_attr_get_value(dev_scsi->devpath, "rev");
+ scsi_rev = sysfs_attr_get_value(udev, dev_scsi->devpath, "rev");
if (!scsi_rev) {
- info("%s: cannot get SCSI revision attribute", dev_scsi->kernel_name);
- return 1;
+ info(udev, "%s: cannot get SCSI revision attribute\n", dev_scsi->kernel);
+ goto fallback;
}
set_str(revision_str, scsi_rev, sizeof(revision_str)-1);
+ /*
+ * some broken devices have the same identifiers
+ * for all luns, export the target:lun number
+ */
+ sprintf(instance_str, "%d:%d", target, lun);
}
- /* Fallback to USB vendor & device */
+fallback:
+ /* fallback to USB vendor & device */
if (vendor_str[0] == '\0') {
+ const char *usb_vendor = NULL;
+
if (!use_num_info)
- if (!(usb_vendor = sysfs_attr_get_value(dev_usb->devpath, "manufacturer")))
- dbg("No USB vendor string found, using idVendor");
+ usb_vendor = sysfs_attr_get_value(udev, dev_usb->devpath, "manufacturer");
+
+ if (!usb_vendor)
+ usb_vendor = sysfs_attr_get_value(udev, dev_usb->devpath, "idVendor");
if (!usb_vendor) {
- if (!(usb_vendor = sysfs_attr_get_value(dev_usb->devpath, "idVendor"))) {
- dbg("No USB vendor information available\n");
- sprintf(vendor_str,"0000");
- }
+ info(udev, "No USB vendor information available\n");
+ return 1;
}
- set_str(vendor_str,usb_vendor, sizeof(vendor_str) - 1);
+ set_str(vendor_str, usb_vendor, sizeof(vendor_str)-1);
}
-
+
if (model_str[0] == '\0') {
+ const char *usb_model = NULL;
+
if (!use_num_info)
- if (!(usb_model = sysfs_attr_get_value(dev_usb->devpath, "product")))
- dbg("No USB model string found, using idProduct");
-
+ usb_model = sysfs_attr_get_value(udev, dev_usb->devpath, "product");
+
+ if (!usb_model)
+ usb_model = sysfs_attr_get_value(udev, dev_usb->devpath, "idProduct");
+
if (!usb_model) {
- if (!(usb_model = sysfs_attr_get_value(dev_usb->devpath, "idProduct")))
- dbg("No USB model information available\n"); sprintf(model_str,"0000");
+ dbg("No USB model information available\n");
+ return 1;
}
- set_str(model_str, usb_model, sizeof(model_str) - 1);
+ set_str(model_str, usb_model, sizeof(model_str)-1);
}
if (revision_str[0] == '\0') {
- usb_rev = sysfs_attr_get_value(dev_usb->devpath, "bcdDevice");
+ const char *usb_rev;
+
+ usb_rev = sysfs_attr_get_value(udev, dev_usb->devpath, "bcdDevice");
if (usb_rev)
set_str(revision_str, usb_rev, sizeof(revision_str)-1);
}
if (serial_str[0] == '\0') {
- usb_serial = sysfs_attr_get_value(dev_usb->devpath, "serial");
+ const char *usb_serial;
+
+ usb_serial = sysfs_attr_get_value(udev, dev_usb->devpath, "serial");
if (usb_serial)
set_str(serial_str, usb_serial, sizeof(serial_str)-1);
}
int main(int argc, char **argv)
{
+ struct udev *udev;
int retval = 0;
const char *env;
char devpath[MAX_PATH_LEN];
- int option;
+ static int export;
+ static const struct option options[] = {
+ { "usb-info", 0, NULL, 'u' },
+ { "num-info", 0, NULL, 'n' },
+ { "export", 0, NULL, 'x' },
+ { "help", 0, NULL, 'h' },
+ {}
+ };
+
+ udev = udev_new();
+ if (udev == NULL)
+ goto exit;
logging_init("usb_id");
+ udev_set_log_fn(udev, log_fn);
sysfs_init();
- dbg("argc is %d", argc);
+ while (1) {
+ int option;
- /* sysfs path can be overridden for testing */
- env = getenv("SYSFS_PATH");
- if (env) {
- strlcpy(sysfs_path, env, sizeof(sysfs_path));
- remove_trailing_chars(sysfs_path, '/');
- } else
- strcpy(sysfs_path, "/sys");
-
- while ((option = getopt(argc, argv, "dnux")) != -1 ) {
- if (optarg)
- dbg("option '%c' arg '%s'", option, optarg);
- else
- dbg("option '%c'", option);
+ option = getopt_long(argc, argv, "nuxh", options, NULL);
+ if (option == -1)
+ break;
switch (option) {
- case 'd':
- debug = 1;
- break;
case 'n':
use_num_info = 1;
use_usb_info = 1;
case 'x':
export = 1;
break;
+ case 'h':
+ printf("Usage: usb_id [--usb-info] [--num-info] [--export] [--help] <devpath>\n"
+ " --usb-info use usb strings instead\n"
+ " --num-info use numerical values\n"
+ " --export print values as environemt keys\n"
+ " --help print this help text\n\n");
default:
- info("Unknown or bad option '%c' (0x%x)", option, option);
retval = 1;
- break;
+ goto exit;
}
}
if (env != NULL)
strlcpy(devpath, env, sizeof(devpath));
else {
- if (optind == argc) {
+ if (argv[optind] == NULL) {
fprintf(stderr, "No device specified\n");
retval = 1;
goto exit;
strlcpy(devpath, argv[optind], sizeof(devpath));
}
- retval = usb_id(devpath);
+ retval = usb_id(udev, devpath);
if (retval == 0) {
+ char serial[256];
+
+ strlcpy(serial, vendor_str, sizeof(serial));
+ strlcat(serial, "_", sizeof(serial));
+ strlcat(serial, model_str, sizeof(serial));
+ if (serial_str[0] != '\0') {
+ strlcat(serial, "_", sizeof(serial));
+ strlcat(serial, serial_str, sizeof(serial));
+ }
+ if (instance_str[0] != '\0') {
+ strlcat(serial, "-", sizeof(serial));
+ strlcat(serial, instance_str, sizeof(serial));
+ }
+
if (export) {
printf("ID_VENDOR=%s\n", vendor_str);
printf("ID_MODEL=%s\n", model_str);
printf("ID_REVISION=%s\n", revision_str);
- if (serial_str[0] == '\0') {
- printf("ID_SERIAL=%s_%s\n",
- vendor_str, model_str);
- } else {
- printf("ID_SERIAL=%s_%s_%s\n",
- vendor_str, model_str, serial_str);
- }
+ printf("ID_SERIAL=%s\n", serial);
+ if (serial_str[0] != '\0')
+ printf("ID_SERIAL_SHORT=%s\n", serial_str);
printf("ID_TYPE=%s\n", type_str);
+ if (instance_str[0] != '\0')
+ printf("ID_INSTANCE=%s\n", instance_str);
printf("ID_BUS=usb\n");
- } else {
- if (serial_str[0] == '\0') {
- printf("%s_%s\n",
- vendor_str, model_str);
- } else {
- printf("%s_%s_%s\n",
- vendor_str, model_str, serial_str);
- }
- }
+ } else
+ printf("%s\n", serial);
}
exit:
+ udev_unref(udev);
sysfs_cleanup();
logging_close();
return retval;
~ianmdlvl / elogind.git / blobdiff