X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=extras%2Fusb_id%2Fusb_id.c;h=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hb=d7867b31836173d1a943ecb1cab6484536126411;hp=f39496b07c7a47bf962e22da42173c585a2e4bcb;hpb=033e9f8cde5a7feec1334888aec69def99c945b5;p=elogind.git diff --git a/extras/usb_id/usb_id.c b/extras/usb_id/usb_id.c index f39496b07..e69de29bb 100644 --- a/extras/usb_id/usb_id.c +++ b/extras/usb_id/usb_id.c @@ -1,456 +0,0 @@ -/* - * usb_id - identify an USB device - * - * Copyright (c) 2005 SUSE Linux Products GmbH, Germany - * - * Author: - * Hannes Reinecke - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation version 2 of the License. - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include "../../udev/udev.h" - -#define MAX_PATH_LEN 512 -#define MAX_SERIAL_LEN 256 -#define BLKGETSIZE64 _IOR(0x12,114,size_t) - -static void log_fn(struct udev *udev, int priority, - const char *file, int line, const char *fn, - const char *format, va_list args) -{ - vsyslog(priority, format, args); -} - -static char vendor_str[64]; -static char model_str[64]; -static char serial_str[MAX_SERIAL_LEN]; -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 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) -{ - char *type = "generic"; - - 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'; -} - -static int set_usb_mass_storage_ifsubtype(char *to, const char *from, size_t len) -{ - int type_num = 0; - char *eptr; - char *type = "generic"; - - type_num = strtoul(from, &eptr, 0); - if (eptr != from) { - switch (type_num) { - case 2: - type = "cd"; - break; - case 3: - type = "tape"; - break; - case 4: /* UFI */ - case 5: /* SFF-8070i */ - type = "floppy"; - break; - case 1: /* RBC devices */ - case 6: /* Transparent SPC-2 devices */ - type = "disk"; - break; - default: - break; - } - } - util_strlcpy(to, type, len); - - return type_num; -} - -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: - case 0xe: - type = "disk"; - break; - case 1: - type = "tape"; - break; - case 4: - case 7: - case 0xf: - type = "optical"; - break; - case 5: - type = "cd"; - break; - default: - break; - } - } - util_strlcpy(to, type, len); -} - -/* - * A unique USB identification is generated like this: - * - * 1.) Get the USB device type from DeviceClass, 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 - * USB-Vendor and USB-model. Any non-printable characters - * in those strings will be skipped; a slash '/' will be converted - * into a full stop '.'. - * 4.) If that fails, too, we will use idVendor and idProduct - * as USB-Vendor and USB-model. - * 5.) The USB identification is the USB-vendor and USB-model - * string concatenated with an underscore '_'. - * 6.) If the device supplies a serial number, this number - * is concatenated with the identification with an underscore '_'. - */ -static int usb_id(struct udev *udev, const char *devpath) -{ - struct sysfs_device *dev; - struct sysfs_device *dev_interface; - struct sysfs_device *dev_usb; - const char *if_class, *if_subclass; - int if_class_num; - int protocol = 0; - - dbg(udev, "devpath %s\n", devpath); - - /* get all usb specific information: dev_interface, if_class, dev_usb */ - dev = sysfs_device_get(udev, devpath); - if (dev == NULL) { - err(udev, "unable to access '%s'\n", devpath); - return 1; - } - - /* 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; - } - - 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); - - 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(udev, dev_interface, "usb"); - if (!dev_usb) { - info(udev, "unable to find parent 'usb' device of '%s'\n", devpath); - return 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; - } - - /* Generic SPC-2 device */ - scsi_vendor = sysfs_attr_get_value(udev, dev_scsi->devpath, "vendor"); - if (!scsi_vendor) { - 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(udev, dev_scsi->devpath, "model"); - if (!scsi_model) { - 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(udev, dev_scsi->devpath, "type"); - if (!scsi_type) { - 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(udev, dev_scsi->devpath, "rev"); - if (!scsi_rev) { - 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: - /* fallback to USB vendor & device */ - if (vendor_str[0] == '\0') { - const char *usb_vendor = NULL; - - if (!use_num_info) - 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) { - info(udev, "No USB vendor information available\n"); - return 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) - 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) { - dbg(udev, "No USB model information available\n"); - return 1; - } - set_str(model_str, usb_model, sizeof(model_str)-1); - } - - if (revision_str[0] == '\0') { - 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') { - 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); - } - return 0; -} - -int main(int argc, char **argv) -{ - struct udev *udev; - int retval = 0; - const char *env; - char devpath[MAX_PATH_LEN]; - static int export; - static const struct option options[] = { - { "usb-info", no_argument, NULL, 'u' }, - { "num-info", no_argument, NULL, 'n' }, - { "export", no_argument, NULL, 'x' }, - { "help", no_argument, NULL, 'h' }, - {} - }; - - udev = udev_new(); - if (udev == NULL) - goto exit; - - logging_init("usb_id"); - udev_set_log_fn(udev, log_fn); - sysfs_init(); - - while (1) { - int option; - - option = getopt_long(argc, argv, "nuxh", options, NULL); - if (option == -1) - break; - - switch (option) { - case 'n': - use_num_info = 1; - use_usb_info = 1; - break; - case 'u': - use_usb_info = 1; - break; - case 'x': - export = 1; - break; - case 'h': - printf("Usage: usb_id [--usb-info] [--num-info] [--export] [--help] \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: - retval = 1; - goto exit; - } - } - - env = getenv("DEVPATH"); - if (env != NULL) - util_strlcpy(devpath, env, sizeof(devpath)); - else { - if (argv[optind] == NULL) { - fprintf(stderr, "No device specified\n"); - retval = 1; - goto exit; - } - util_strlcpy(devpath, argv[optind], sizeof(devpath)); - } - - retval = usb_id(udev, devpath); - - if (retval == 0) { - char serial[256]; - - util_strlcpy(serial, vendor_str, sizeof(serial)); - util_strlcat(serial, "_", sizeof(serial)); - util_strlcat(serial, model_str, sizeof(serial)); - if (serial_str[0] != '\0') { - util_strlcat(serial, "_", sizeof(serial)); - util_strlcat(serial, serial_str, sizeof(serial)); - } - if (instance_str[0] != '\0') { - util_strlcat(serial, "-", sizeof(serial)); - util_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); - 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 - printf("%s\n", serial); - } - -exit: - udev_unref(udev); - sysfs_cleanup(); - logging_close(); - return retval; -}