+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* USB device properties and persistent device path
*
* Copyright (c) 2005 SUSE Linux Products GmbH, Germany
* Author: Hannes Reinecke <hare@suse.de>
- *
- * Copyright (C) 2005-2011 Kay Sievers <kay@vrfy.org>
- *
- * 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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
-#include <stdarg.h>
-#include <unistd.h>
#include <string.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <errno.h>
+#include <unistd.h>
-#include "udev.h"
+#include "alloc-util.h"
+#include "device-util.h"
+#include "fd-util.h"
+#include "libudev-util.h"
+#include "string-util.h"
+#include "strxcpyx.h"
+#include "udev-builtin.h"
static void set_usb_iftype(char *to, int if_class_num, size_t len) {
const char *type = "generic";
#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) {
+static int dev_if_packed_info(sd_device *dev, char *ifs_str, size_t len) {
_cleanup_free_ char *filename = NULL;
_cleanup_close_ int fd = -1;
ssize_t size;
unsigned char buf[18 + 65535];
- int pos = 0;
+ size_t pos = 0;
unsigned strpos = 0;
+ const char *syspath;
+ int r;
struct usb_interface_descriptor {
- uint8_t bLength;
- uint8_t bDescriptorType;
- uint8_t bInterfaceNumber;
- uint8_t bAlternateSetting;
- uint8_t bNumEndpoints;
- uint8_t bInterfaceClass;
- uint8_t bInterfaceSubClass;
- uint8_t bInterfaceProtocol;
- uint8_t iInterface;
+ uint8_t bLength;
+ uint8_t bDescriptorType;
+ uint8_t bInterfaceNumber;
+ uint8_t bAlternateSetting;
+ uint8_t bNumEndpoints;
+ uint8_t bInterfaceClass;
+ uint8_t bInterfaceSubClass;
+ uint8_t bInterfaceProtocol;
+ uint8_t iInterface;
} _packed_;
- if (asprintf(&filename, "%s/descriptors", udev_device_get_syspath(dev)) < 0)
+ r = sd_device_get_syspath(dev, &syspath);
+ if (r < 0)
+ return r;
+ if (asprintf(&filename, "%s/descriptors", syspath) < 0)
return log_oom();
fd = open(filename, O_RDONLY|O_CLOEXEC);
- if (fd < 0) {
- fprintf(stderr, "error opening USB device 'descriptors' file\n");
- return -errno;
- }
+ if (fd < 0)
+ return log_device_debug_errno(dev, errno, "Failed to open USB device 'descriptors' file: %m");
size = read(fd, buf, sizeof(buf));
- if (size < 18 || size == sizeof(buf))
+ if (size < 18 || (size_t) size >= sizeof(buf))
return -EIO;
ifs_str[0] = '\0';
- while (pos < size && strpos+7 < len-2) {
+ while (pos + sizeof(struct usb_interface_descriptor) < (size_t) size &&
+ strpos + 7 < len - 2) {
+
struct usb_interface_descriptor *desc;
char if_str[8];
* 6.) If the device supplies a serial number, this number
* is concatenated with the identification with an underscore '_'.
*/
-static int builtin_usb_id(struct udev_device *dev, int argc, char *argv[], bool test) {
- char vendor_str[64];
+static int builtin_usb_id(sd_device *dev, int argc, char *argv[], bool test) {
+ char vendor_str[64] = "";
char vendor_str_enc[256];
const char *vendor_id;
- char model_str[64];
+ char model_str[64] = "";
char model_str_enc[256];
const char *product_id;
- char serial_str[UTIL_NAME_SIZE];
- char packed_if_str[UTIL_NAME_SIZE];
- char revision_str[64];
- char type_str[64];
- char instance_str[64];
+ char serial_str[UTIL_NAME_SIZE] = "";
+ char packed_if_str[UTIL_NAME_SIZE] = "";
+ char revision_str[64] = "";
+ char type_str[64] = "";
+ char instance_str[64] = "";
const char *ifnum = NULL;
const char *driver = NULL;
char serial[256];
- struct udev_device *dev_interface = NULL;
- struct udev_device *dev_usb = NULL;
+ sd_device *dev_interface, *dev_usb;
const char *if_class, *if_subclass;
int if_class_num;
int protocol = 0;
size_t l;
char *s;
- vendor_str[0] = '\0';
- model_str[0] = '\0';
- serial_str[0] = '\0';
- packed_if_str[0] = '\0';
- revision_str[0] = '\0';
- type_str[0] = '\0';
- instance_str[0] = '\0';
+ const char *syspath, *sysname, *devtype, *interface_syspath;
+ int r;
+
+ assert(dev);
+
+ r = sd_device_get_syspath(dev, &syspath);
+ if (r < 0)
+ return r;
+
+ r = sd_device_get_sysname(dev, &sysname);
+ if (r < 0)
+ return r;
/* shortcut, if we are called directly for a "usb_device" type */
- if (udev_device_get_devtype(dev) != NULL && streq(udev_device_get_devtype(dev), "usb_device")) {
+ if (sd_device_get_devtype(dev, &devtype) >= 0 && streq(devtype, "usb_device")) {
dev_if_packed_info(dev, packed_if_str, sizeof(packed_if_str));
dev_usb = dev;
goto fallback;
}
/* usb interface directory */
- dev_interface = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface");
- if (dev_interface == NULL) {
- log_debug("unable to access usb_interface device of '%s'",
- udev_device_get_syspath(dev));
- return EXIT_FAILURE;
- }
+ r = sd_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface", &dev_interface);
+ if (r < 0)
+ return log_device_debug_errno(dev, r, "Failed to access usb_interface: %m");
- ifnum = udev_device_get_sysattr_value(dev_interface, "bInterfaceNumber");
- driver = udev_device_get_sysattr_value(dev_interface, "driver");
+ r = sd_device_get_syspath(dev_interface, &interface_syspath);
+ if (r < 0)
+ return log_device_debug_errno(dev_interface, r, "Failed to get syspath: %m");
+ (void) sd_device_get_sysattr_value(dev_interface, "bInterfaceNumber", &ifnum);
+ (void) sd_device_get_sysattr_value(dev_interface, "driver", &driver);
- if_class = udev_device_get_sysattr_value(dev_interface, "bInterfaceClass");
- if (!if_class) {
- log_debug("%s: cannot get bInterfaceClass attribute",
- udev_device_get_sysname(dev));
- return EXIT_FAILURE;
- }
+ r = sd_device_get_sysattr_value(dev_interface, "bInterfaceClass", &if_class);
+ if (r < 0)
+ return log_device_debug_errno(dev_interface, r, "Failed to get bInterfaceClass attribute: %m");
if_class_num = strtoul(if_class, NULL, 16);
if (if_class_num == 8) {
/* mass storage */
- if_subclass = udev_device_get_sysattr_value(dev_interface, "bInterfaceSubClass");
- if (if_subclass != NULL)
+ if (sd_device_get_sysattr_value(dev_interface, "bInterfaceSubClass", &if_subclass) >= 0)
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);
- }
- log_debug("%s: if_class %d protocol %d",
- udev_device_get_syspath(dev_interface), if_class_num, protocol);
+ log_device_debug(dev_interface, "if_class:%d protocol:%d", if_class_num, protocol);
/* usb device directory */
- dev_usb = udev_device_get_parent_with_subsystem_devtype(dev_interface, "usb", "usb_device");
- if (!dev_usb) {
- log_debug("unable to find parent 'usb' device of '%s'",
- udev_device_get_syspath(dev));
- return EXIT_FAILURE;
- }
+ r = sd_device_get_parent_with_subsystem_devtype(dev_interface, "usb", "usb_device", &dev_usb);
+ if (r < 0)
+ return log_device_debug_errno(dev_interface, r, "Failed to find parent 'usb' device");
/* 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)) {
- struct udev_device *dev_scsi;
- const char *scsi_model, *scsi_vendor, *scsi_type, *scsi_rev;
+ if (IN_SET(protocol, 6, 2)) {
+ sd_device *dev_scsi;
+ const char *scsi_sysname, *scsi_model, *scsi_vendor, *scsi_type, *scsi_rev;
int host, bus, target, lun;
/* get scsi device */
- dev_scsi = udev_device_get_parent_with_subsystem_devtype(dev, "scsi", "scsi_device");
- if (dev_scsi == NULL) {
- log_debug("unable to find parent 'scsi' device of '%s'",
- udev_device_get_syspath(dev));
+ r = sd_device_get_parent_with_subsystem_devtype(dev, "scsi", "scsi_device", &dev_scsi);
+ if (r < 0) {
+ log_device_debug_errno(dev, r, "Unable to find parent SCSI device");
goto fallback;
}
- if (sscanf(udev_device_get_sysname(dev_scsi), "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4) {
- log_debug("invalid scsi device '%s'", udev_device_get_sysname(dev_scsi));
+ if (sd_device_get_sysname(dev_scsi, &scsi_sysname) < 0)
+ goto fallback;
+ if (sscanf(scsi_sysname, "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4) {
+ log_device_debug(dev_scsi, "Invalid SCSI device");
goto fallback;
}
/* Generic SPC-2 device */
- scsi_vendor = udev_device_get_sysattr_value(dev_scsi, "vendor");
- if (!scsi_vendor) {
- log_debug("%s: cannot get SCSI vendor attribute",
- udev_device_get_sysname(dev_scsi));
+ r = sd_device_get_sysattr_value(dev_scsi, "vendor", &scsi_vendor);
+ if (r < 0) {
+ log_device_debug_errno(dev_scsi, r, "Failed to get SCSI vendor attribute: %m");
goto fallback;
}
udev_util_encode_string(scsi_vendor, vendor_str_enc, sizeof(vendor_str_enc));
util_replace_whitespace(scsi_vendor, vendor_str, sizeof(vendor_str)-1);
util_replace_chars(vendor_str, NULL);
- scsi_model = udev_device_get_sysattr_value(dev_scsi, "model");
- if (!scsi_model) {
- log_debug("%s: cannot get SCSI model attribute",
- udev_device_get_sysname(dev_scsi));
+ r = sd_device_get_sysattr_value(dev_scsi, "model", &scsi_model);
+ if (r < 0) {
+ log_device_debug_errno(dev_scsi, r, "Failed to get SCSI model attribute: %m");
goto fallback;
}
udev_util_encode_string(scsi_model, model_str_enc, sizeof(model_str_enc));
util_replace_whitespace(scsi_model, model_str, sizeof(model_str)-1);
util_replace_chars(model_str, NULL);
- scsi_type = udev_device_get_sysattr_value(dev_scsi, "type");
- if (!scsi_type) {
- log_debug("%s: cannot get SCSI type attribute",
- udev_device_get_sysname(dev_scsi));
+ r = sd_device_get_sysattr_value(dev_scsi, "type", &scsi_type);
+ if (r < 0) {
+ log_device_debug_errno(dev_scsi, r, "Failed to get SCSI type attribute: %m");
goto fallback;
}
set_scsi_type(type_str, scsi_type, sizeof(type_str)-1);
- scsi_rev = udev_device_get_sysattr_value(dev_scsi, "rev");
- if (!scsi_rev) {
- log_debug("%s: cannot get SCSI revision attribute",
- udev_device_get_sysname(dev_scsi));
+ r = sd_device_get_sysattr_value(dev_scsi, "rev", &scsi_rev);
+ if (r < 0) {
+ log_device_debug_errno(dev_scsi, r, "Failed to get SCSI revision attribute: %m");
goto fallback;
}
util_replace_whitespace(scsi_rev, revision_str, sizeof(revision_str)-1);
}
fallback:
- vendor_id = udev_device_get_sysattr_value(dev_usb, "idVendor");
- product_id = udev_device_get_sysattr_value(dev_usb, "idProduct");
+ r = sd_device_get_sysattr_value(dev_usb, "idVendor", &vendor_id);
+ if (r < 0)
+ return log_device_debug_errno(dev_usb, r, "Failed to get idVendor attribute: %m");
+
+ r = sd_device_get_sysattr_value(dev_usb, "idProduct", &product_id);
+ if (r < 0)
+ return log_device_debug_errno(dev_usb, r, "Failed to get idProduct attribute: %m");
/* fallback to USB vendor & device */
if (vendor_str[0] == '\0') {
- const char *usb_vendor = NULL;
+ const char *usb_vendor;
- usb_vendor = udev_device_get_sysattr_value(dev_usb, "manufacturer");
- if (!usb_vendor)
+ if (sd_device_get_sysattr_value(dev_usb, "manufacturer", &usb_vendor) < 0)
usb_vendor = vendor_id;
- if (!usb_vendor) {
- log_debug("No USB vendor information available");
- return EXIT_FAILURE;
- }
udev_util_encode_string(usb_vendor, vendor_str_enc, sizeof(vendor_str_enc));
util_replace_whitespace(usb_vendor, vendor_str, sizeof(vendor_str)-1);
util_replace_chars(vendor_str, NULL);
}
if (model_str[0] == '\0') {
- const char *usb_model = NULL;
+ const char *usb_model;
- usb_model = udev_device_get_sysattr_value(dev_usb, "product");
- if (!usb_model)
+ if (sd_device_get_sysattr_value(dev_usb, "product", &usb_model) < 0)
usb_model = product_id;
- if (!usb_model)
- return EXIT_FAILURE;
udev_util_encode_string(usb_model, model_str_enc, sizeof(model_str_enc));
util_replace_whitespace(usb_model, model_str, sizeof(model_str)-1);
util_replace_chars(model_str, NULL);
if (revision_str[0] == '\0') {
const char *usb_rev;
- usb_rev = udev_device_get_sysattr_value(dev_usb, "bcdDevice");
- if (usb_rev) {
+ if (sd_device_get_sysattr_value(dev_usb, "bcdDevice", &usb_rev) >= 0) {
util_replace_whitespace(usb_rev, revision_str, sizeof(revision_str)-1);
util_replace_chars(revision_str, NULL);
}
if (serial_str[0] == '\0') {
const char *usb_serial;
- usb_serial = udev_device_get_sysattr_value(dev_usb, "serial");
- if (usb_serial) {
+ if (sd_device_get_sysattr_value(dev_usb, "serial", &usb_serial) >= 0) {
const unsigned char *p;
/* http://msdn.microsoft.com/en-us/library/windows/hardware/gg487321.aspx */
- for (p = (unsigned char *)usb_serial; *p != '\0'; p++)
+ for (p = (unsigned char *) usb_serial; *p != '\0'; p++)
if (*p < 0x20 || *p > 0x7f || *p == ',') {
usb_serial = NULL;
break;
}
- }
- if (usb_serial) {
- util_replace_whitespace(usb_serial, serial_str, sizeof(serial_str)-1);
- util_replace_chars(serial_str, NULL);
+ if (usb_serial) {
+ util_replace_whitespace(usb_serial, serial_str, sizeof(serial_str)-1);
+ util_replace_chars(serial_str, NULL);
+ }
}
}
s = serial;
l = strpcpyl(&s, sizeof(serial), vendor_str, "_", model_str, NULL);
- if (serial_str[0] != '\0')
+ if (!isempty(serial_str))
l = strpcpyl(&s, l, "_", serial_str, NULL);
- if (instance_str[0] != '\0')
+ if (!isempty(instance_str))
strpcpyl(&s, l, "-", instance_str, NULL);
udev_builtin_add_property(dev, test, "ID_VENDOR", vendor_str);
udev_builtin_add_property(dev, test, "ID_MODEL_ID", product_id);
udev_builtin_add_property(dev, test, "ID_REVISION", revision_str);
udev_builtin_add_property(dev, test, "ID_SERIAL", serial);
- if (serial_str[0] != '\0')
+ if (!isempty(serial_str))
udev_builtin_add_property(dev, test, "ID_SERIAL_SHORT", serial_str);
- if (type_str[0] != '\0')
+ if (!isempty(type_str))
udev_builtin_add_property(dev, test, "ID_TYPE", type_str);
- if (instance_str[0] != '\0')
+ if (!isempty(instance_str))
udev_builtin_add_property(dev, test, "ID_INSTANCE", instance_str);
udev_builtin_add_property(dev, test, "ID_BUS", "usb");
- if (packed_if_str[0] != '\0')
+ if (!isempty(packed_if_str))
udev_builtin_add_property(dev, test, "ID_USB_INTERFACES", packed_if_str);
- if (ifnum != NULL)
+ if (ifnum)
udev_builtin_add_property(dev, test, "ID_USB_INTERFACE_NUM", ifnum);
- if (driver != NULL)
+ if (driver)
udev_builtin_add_property(dev, test, "ID_USB_DRIVER", driver);
- return EXIT_SUCCESS;
+ return 0;
}
const struct udev_builtin udev_builtin_usb_id = {
projects / thirdparty / systemd.git / blobdiff