/*
- * usb_id.c
- *
- * Identify an USB (block) device
+ * usb_id - identify an USB device
*
* Copyright (c) 2005 SUSE Linux Products GmbH, Germany
*
#include <unistd.h>
#include <string.h>
#include <ctype.h>
+#include <fcntl.h>
#include <errno.h>
+#include <getopt.h>
-#include "../../udev.h"
+#include "libudev.h"
+#include "libudev-private.h"
-#define MAX_PATH_LEN 512
-#define MAX_SERIAL_LEN 256
-#define BLKGETSIZE64 _IOR(0x12,114,size_t)
+int debug;
-#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 (debug) {
+ fprintf(stderr, "%s: ", fn != NULL ? fn : file);
+ vfprintf(stderr, format, args);
+ } else {
+ vsyslog(priority, format, args);
}
-
- if (priority > udev_log)
- return;
-
- va_start(args, format);
- vsyslog(priority, format, args);
- va_end(args);
}
-#endif
static char vendor_str[64];
+static char vendor_str_enc[256];
+static const char *vendor_id = "";
static char model_str[64];
-static char serial_str[MAX_SERIAL_LEN];
-static char revision_str[16];
-static char type_str[16];
+static char model_str_enc[256];
+static const char *product_id = "";
+static char serial_str[UTIL_NAME_SIZE];
+static char packed_if_str[UTIL_NAME_SIZE];
+static char revision_str[64];
+static char type_str[64];
+static char instance_str[64];
+static const char *ifnum;
+static const char *driver;
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)
-{
- size_t i, j, len;
-
- /* strip trailing whitespace */
- len = strnlen(from, count);
- while (len && isspace(from[len-1]))
- len--;
-
- /* strip leading whitespace */
- i = 0;
- while (isspace(from[i]) && (i < len))
- i++;
-
- j = 0;
- while (i < len) {
- /* substitute multiple whitespace */
- if (isspace(from[i])) {
- while (isspace(from[i]))
- i++;
- to[j++] = '_';
- }
- /* Replace '/' with '.' */
- if (from[i] == '/') {
- to[j++] = '.';
- i++;
- continue;
- }
- /* skip non-printable chars */
- if (!isalnum(from[i]) && !ispunct(from[i])) {
- i++;
- continue;
- }
- to[j++] = from[i++];
- }
- to[j] = '\0';
-}
static void set_usb_iftype(char *to, int if_class_num, size_t len)
{
case 1:
type = "audio";
break;
+ case 2: /* CDC-Control */
+ break;
case 3:
type = "hid";
break;
+ case 5: /* Physical */
+ break;
+ case 6:
+ type = "media";
+ break;
case 7:
type = "printer";
break;
case 8:
- type = "disk";
+ type = "storage";
+ break;
+ case 9:
+ type = "hub";
break;
- case 2: /* CDC-Control */
- case 5: /* Physical */
- case 6: /* Image */
- case 9: /* HUB */
case 0x0a: /* CDC-Data */
+ break;
case 0x0b: /* Chip/Smart Card */
+ break;
case 0x0d: /* Content Security */
- case 0x0e: /* Video */
+ break;
+ case 0x0e:
+ type = "video";
+ break;
case 0xdc: /* Diagnostic Device */
+ break;
case 0xe0: /* Wireless Controller */
- case 0xf2: /* Application-specific */
+ break;
+ case 0xfe: /* Application-specific */
+ break;
case 0xff: /* Vendor-specific */
break;
default:
if (eptr != from) {
switch (type_num) {
case 2:
- type = "cd";
+ type = "atapi";
break;
case 3:
type = "tape";
type = "floppy";
break;
case 1: /* RBC devices */
+ type = "rbc";
+ break;
case 6: /* Transparent SPC-2 devices */
- type = "disk";
+ type = "scsi";
break;
default:
break;
}
}
- strncpy(to, type, len);
- to[len-1] = '\0';
-
+ util_strscpy(to, len, type);
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");
}
+ util_strscpy(to, len, type);
+}
+
+#define USB_DT_DEVICE 0x01
+#define USB_DT_INTERFACE 0x04
+
+static int dev_if_packed_info(struct udev_device *dev, char *ifs_str, size_t len)
+{
+ char *filename = NULL;
+ int fd;
+ ssize_t size;
+ unsigned char buf[18 + 65535];
+ unsigned int pos, strpos;
+ struct usb_interface_descriptor {
+ u_int8_t bLength;
+ u_int8_t bDescriptorType;
+ u_int8_t bInterfaceNumber;
+ u_int8_t bAlternateSetting;
+ u_int8_t bNumEndpoints;
+ u_int8_t bInterfaceClass;
+ u_int8_t bInterfaceSubClass;
+ u_int8_t bInterfaceProtocol;
+ u_int8_t iInterface;
+ } __attribute__((packed));
+ int err = 0;
+
+ if (asprintf(&filename, "%s/descriptors", udev_device_get_syspath(dev)) < 0) {
+ err = -1;
+ goto out;
+ }
+ fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "error opening USB device 'descriptors' file\n");
+ err = -1;
+ goto out;
+ }
+ size = read(fd, buf, sizeof(buf));
+ close(fd);
+ if (size < 18 || size == sizeof(buf)) {
+ err = -1;
+ goto out;
+ }
+
+ pos = 0;
+ strpos = 0;
+ while (pos < sizeof(buf) && strpos+7 < len) {
+ struct usb_interface_descriptor *desc;
+ char if_str[8];
+
+ desc = (struct usb_interface_descriptor *) &buf[pos];
+ if (desc->bLength < 3)
+ break;
+ pos += desc->bLength;
+
+ if (desc->bDescriptorType != USB_DT_INTERFACE)
+ continue;
+
+ if (snprintf(if_str, 8, "%02x%02x%02x:",
+ desc->bInterfaceClass,
+ desc->bInterfaceSubClass,
+ desc->bInterfaceProtocol) != 7)
+ continue;
+
+ if (strstr(ifs_str, if_str) != NULL)
+ continue;
+
+ memcpy(&ifs_str[strpos], if_str, 8),
+ strpos += 7;
+ }
+out:
+ free(filename);
+ return err;
}
/*
* A unique USB identification is generated like this:
*
- * 1.) Get the USB device type from DeviceClass, InterfaceClass
- * and InterfaceSubClass
+ * 1.) Get the USB device type from InterfaceClass and InterfaceSubClass
* 2.) If the device type is 'Mass-Storage/SPC-2' or 'Mass-Storage/RBC'
* use the SCSI vendor and model as USB-Vendor and USB-model.
* 3.) Otherwise use the USB manufacturer and product as
* 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_device *dev)
{
- struct sysfs_device *dev;
- 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;
+ struct udev *udev = udev_device_get_udev(dev);
+ struct udev_device *dev_interface = NULL;
+ struct udev_device *dev_usb = NULL;
const char *if_class, *if_subclass;
int if_class_num;
int protocol = 0;
- dbg("devpath %s\n", devpath);
+ dbg(udev, "syspath %s\n", udev_device_get_syspath(dev));
- /* get all usb specific information: dev_interface, if_class, dev_usb */
- dev = sysfs_device_get(devpath);
- if (dev == NULL) {
- err("unable to access '%s'", devpath);
- return 1;
+ /* shortcut, if we are called directly for a "usb_device" type */
+ if (udev_device_get_devtype(dev) != NULL && strcmp(udev_device_get_devtype(dev), "usb_device") == 0) {
+ dev_if_packed_info(dev, packed_if_str, sizeof(packed_if_str));
+ dev_usb = dev;
+ goto fallback;
}
/* usb interface directory */
- dev_interface = sysfs_device_get_parent_with_subsystem(dev, "usb");
+ dev_interface = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface");
if (dev_interface == NULL) {
- info("unable to access usb_interface device of '%s'", devpath);
+ info(udev, "unable to access usb_interface device of '%s'\n",
+ udev_device_get_syspath(dev));
return 1;
}
- if_class = sysfs_attr_get_value(dev_interface->devpath, "bInterfaceClass");
+ ifnum = udev_device_get_sysattr_value(dev_interface, "bInterfaceNumber");
+ driver = udev_device_get_sysattr_value(dev_interface, "driver");
+
+ if_class = udev_device_get_sysattr_value(dev_interface, "bInterfaceClass");
if (!if_class) {
- info("%s: cannot get bInterfaceClass attribute", dev_interface->kernel_name);
+ info(udev, "%s: cannot get bInterfaceClass attribute\n",
+ udev_device_get_sysname(dev));
return 1;
}
+
if_class_num = strtoul(if_class, NULL, 16);
if (if_class_num == 8) {
- if_subclass = sysfs_attr_get_value(dev_interface->devpath, "bInterfaceSubClass");
+ /* mass storage */
+ if_subclass = udev_device_get_sysattr_value(dev_interface, "bInterfaceSubClass");
if (if_subclass != NULL)
protocol = set_usb_mass_storage_ifsubtype(type_str, if_subclass, sizeof(type_str)-1);
- } else
+ } else {
set_usb_iftype(type_str, if_class_num, sizeof(type_str)-1);
+ }
- info("%s: if_class %d protocol %d\n", dev_interface->devpath, if_class_num, protocol);
+ info(udev, "%s: if_class %d protocol %d\n",
+ udev_device_get_syspath(dev_interface), if_class_num, protocol);
/* usb device directory */
- dev_usb = sysfs_device_get_parent_with_subsystem(dev_interface, "usb");
+ dev_usb = udev_device_get_parent_with_subsystem_devtype(dev_interface, "usb", "usb_device");
if (!dev_usb) {
- info("unable to find parent 'usb' device of '%s'", devpath);
+ info(udev, "unable to find parent 'usb' device of '%s'\n",
+ udev_device_get_syspath(dev));
return 1;
}
- /* mass storage */
- if (protocol == 6 && !use_usb_info) {
- struct sysfs_device *dev_scsi;
+ /* all interfaces of the device in a single string */
+ dev_if_packed_info(dev_usb, packed_if_str, sizeof(packed_if_str));
+
+ /* mass storage : SCSI or ATAPI */
+ if ((protocol == 6 || protocol == 2) && !use_usb_info) {
+ struct udev_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(dev, "scsi");
+ dev_scsi = udev_device_get_parent_with_subsystem_devtype(dev, "scsi", "scsi_device");
if (dev_scsi == NULL) {
- info("unable to find parent 'scsi' device of '%s'", devpath);
+ info(udev, "unable to find parent 'scsi' device of '%s'\n",
+ udev_device_get_syspath(dev));
+ goto fallback;
+ }
+ if (sscanf(udev_device_get_sysname(dev_scsi), "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4) {
+ info(udev, "invalid scsi device '%s'\n", udev_device_get_sysname(dev_scsi));
goto fallback;
}
/* Generic SPC-2 device */
- scsi_vendor = sysfs_attr_get_value(dev_scsi->devpath, "vendor");
+ scsi_vendor = udev_device_get_sysattr_value(dev_scsi, "vendor");
if (!scsi_vendor) {
- info("%s: cannot get SCSI vendor attribute", dev_scsi->kernel_name);
+ info(udev, "%s: cannot get SCSI vendor attribute\n",
+ udev_device_get_sysname(dev_scsi));
goto fallback;
}
- set_str(vendor_str, scsi_vendor, sizeof(vendor_str)-1);
+ udev_util_encode_string(scsi_vendor, vendor_str_enc, sizeof(vendor_str_enc));
+ udev_util_replace_whitespace(scsi_vendor, vendor_str, sizeof(vendor_str)-1);
+ udev_util_replace_chars(vendor_str, NULL);
- scsi_model = sysfs_attr_get_value(dev_scsi->devpath, "model");
+ scsi_model = udev_device_get_sysattr_value(dev_scsi, "model");
if (!scsi_model) {
- info("%s: cannot get SCSI model attribute", dev_scsi->kernel_name);
+ info(udev, "%s: cannot get SCSI model attribute\n",
+ udev_device_get_sysname(dev_scsi));
goto fallback;
}
- set_str(model_str, scsi_model, sizeof(model_str)-1);
+ udev_util_encode_string(scsi_model, model_str_enc, sizeof(model_str_enc));
+ udev_util_replace_whitespace(scsi_model, model_str, sizeof(model_str)-1);
+ udev_util_replace_chars(model_str, NULL);
- scsi_type = sysfs_attr_get_value(dev_scsi->devpath, "type");
+ scsi_type = udev_device_get_sysattr_value(dev_scsi, "type");
if (!scsi_type) {
- info("%s: cannot get SCSI type attribute", dev_scsi->kernel_name);
+ info(udev, "%s: cannot get SCSI type attribute\n",
+ udev_device_get_sysname(dev_scsi));
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 = udev_device_get_sysattr_value(dev_scsi, "rev");
if (!scsi_rev) {
- info("%s: cannot get SCSI revision attribute", dev_scsi->kernel_name);
+ info(udev, "%s: cannot get SCSI revision attribute\n",
+ udev_device_get_sysname(dev_scsi));
goto fallback;
}
- set_str(revision_str, scsi_rev, sizeof(revision_str)-1);
+ udev_util_replace_whitespace(scsi_rev, revision_str, sizeof(revision_str)-1);
+ udev_util_replace_chars(revision_str, NULL);
+
+ /*
+ * some broken devices have the same identifiers
+ * for all luns, export the target:lun number
+ */
+ sprintf(instance_str, "%d:%d", target, lun);
}
fallback:
- /* Fallback to USB vendor & device */
+ vendor_id = udev_device_get_sysattr_value(dev_usb, "idVendor");
+ product_id = udev_device_get_sysattr_value(dev_usb, "idProduct");
+
+ /* 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 = udev_device_get_sysattr_value(dev_usb, "manufacturer");
+
+ if (!usb_vendor)
+ usb_vendor = vendor_id;
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);
+ udev_util_encode_string(usb_vendor, vendor_str_enc, sizeof(vendor_str_enc));
+ udev_util_replace_whitespace(usb_vendor, vendor_str, sizeof(vendor_str)-1);
+ udev_util_replace_chars(vendor_str, NULL);
}
-
+
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 = udev_device_get_sysattr_value(dev_usb, "product");
+
+ if (!usb_model)
+ usb_model = product_id;
+
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(udev, "No USB model information available\n");
+ return 1;
}
- set_str(model_str, usb_model, sizeof(model_str) - 1);
+ udev_util_encode_string(usb_model, model_str_enc, sizeof(model_str_enc));
+ udev_util_replace_whitespace(usb_model, model_str, sizeof(model_str)-1);
+ udev_util_replace_chars(model_str, NULL);
}
if (revision_str[0] == '\0') {
- usb_rev = sysfs_attr_get_value(dev_usb->devpath, "bcdDevice");
- if (usb_rev)
- set_str(revision_str, usb_rev, sizeof(revision_str)-1);
+ const char *usb_rev;
+
+ usb_rev = udev_device_get_sysattr_value(dev_usb, "bcdDevice");
+ if (usb_rev) {
+ udev_util_replace_whitespace(usb_rev, revision_str, sizeof(revision_str)-1);
+ udev_util_replace_chars(revision_str, NULL);
+ }
}
if (serial_str[0] == '\0') {
- usb_serial = sysfs_attr_get_value(dev_usb->devpath, "serial");
- if (usb_serial)
- set_str(serial_str, usb_serial, sizeof(serial_str)-1);
+ const char *usb_serial;
+
+ usb_serial = udev_device_get_sysattr_value(dev_usb, "serial");
+ if (usb_serial) {
+ udev_util_replace_whitespace(usb_serial, serial_str, sizeof(serial_str)-1);
+ udev_util_replace_chars(serial_str, NULL);
+ }
}
return 0;
}
int main(int argc, char **argv)
{
+ static const struct option options[] = {
+ { "usb-info", no_argument, NULL, 'u' },
+ { "num-info", no_argument, NULL, 'n' },
+ { "export", no_argument, NULL, 'x' },
+ { "debug", no_argument, NULL, 'd' },
+ { "help", no_argument, NULL, 'h' },
+ {}
+ };
+ struct udev *udev;
+ struct udev_device *dev = NULL;
+ static int export;
int retval = 0;
- const char *env;
- char devpath[MAX_PATH_LEN];
- int option;
- logging_init("usb_id");
- sysfs_init();
+ udev = udev_new();
+ if (udev == NULL)
+ goto exit;
- dbg("argc is %d", argc);
+ udev_log_init("usb_id");
+ udev_set_log_fn(udev, log_fn);
- /* 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 (1) {
+ int option;
- 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, "dnuxh", options, NULL);
+ if (option == -1)
+ break;
switch (option) {
case 'd':
debug = 1;
+ if (udev_get_log_priority(udev) < LOG_INFO)
+ udev_set_log_priority(udev, LOG_INFO);
break;
case 'n':
use_num_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 environment 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;
}
}
- env = getenv("DEVPATH");
- if (env != NULL)
- strlcpy(devpath, env, sizeof(devpath));
- else {
- if (optind == argc) {
- fprintf(stderr, "No device specified\n");
+ dev = udev_device_new_from_environment(udev);
+ if (dev == NULL) {
+ char syspath[UTIL_PATH_SIZE];
+ const char *devpath;
+
+ devpath = argv[optind];
+ if (devpath == NULL) {
+ fprintf(stderr, "missing device\n");
retval = 1;
goto exit;
}
- strlcpy(devpath, argv[optind], sizeof(devpath));
- }
- retval = usb_id(devpath);
+ util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), devpath, NULL);
+ dev = udev_device_new_from_syspath(udev, syspath);
+ if (dev == NULL) {
+ err(udev, "unable to access '%s'\n", devpath);
+ retval = 1;
+ goto exit;
+ return 1;
+ }
+ }
+ retval = usb_id(dev);
if (retval == 0) {
+ char serial[256];
+ size_t l;
+ char *s;
+
+ s = serial;
+ l = util_strpcpyl(&s, sizeof(serial), vendor_str, "_", model_str, NULL);
+ if (serial_str[0] != '\0')
+ l = util_strpcpyl(&s, l, "_", serial_str, NULL);
+ if (instance_str[0] != '\0')
+ util_strpcpyl(&s, l, "-", instance_str, NULL);
+
if (export) {
printf("ID_VENDOR=%s\n", vendor_str);
+ printf("ID_VENDOR_ENC=%s\n", vendor_str_enc);
+ printf("ID_VENDOR_ID=%s\n", vendor_id);
printf("ID_MODEL=%s\n", model_str);
+ printf("ID_MODEL_ENC=%s\n", model_str_enc);
+ printf("ID_MODEL_ID=%s\n", product_id);
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_TYPE=%s\n", type_str);
+ printf("ID_SERIAL=%s\n", serial);
+ if (serial_str[0] != '\0')
+ printf("ID_SERIAL_SHORT=%s\n", serial_str);
+ if (type_str[0] != '\0')
+ 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);
- }
- }
+ if (packed_if_str[0] != '\0')
+ printf("ID_USB_INTERFACES=:%s\n", packed_if_str);
+ if (ifnum != NULL)
+ printf("ID_USB_INTERFACE_NUM=%s\n", ifnum);
+ if (driver != NULL)
+ printf("ID_USB_DRIVER=%s\n", driver);
+ } else
+ printf("%s\n", serial);
}
exit:
- sysfs_cleanup();
- logging_close();
+ udev_device_unref(dev);
+ udev_unref(udev);
+ udev_log_close();
return retval;
}
~ianmdlvl / elogind.git / blobdiff