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871a36bd7e
On machines with many thousands of devices: $ time find /sys -name uevent | wc -l 74876 real 0m33.171s user 0m3.329s sys 0m29.719s the current udevtrigger spends minutes sorting the device list: $ time /sbin/udevadm trigger --dry-run real 4m56.739s user 4m45.743s sys 0m7.862s with qsort() it looks better: $ time udev/udevadm trigger --dry-run real 0m6.495s user 0m0.473s sys 0m5.923s
479 lines
13 KiB
C
479 lines
13 KiB
C
/*
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* test-libudev
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*
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* Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*/
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <getopt.h>
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#include <syslog.h>
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#include <fcntl.h>
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#include <sys/select.h>
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#include "libudev.h"
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static void log_fn(struct udev *udev,
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int priority, const char *file, int line, const char *fn,
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const char *format, va_list args)
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{
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printf("test-libudev: %s %s:%d ", fn, file, line);
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vprintf(format, args);
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}
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static void print_device(struct udev_device *device)
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{
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const char *str;
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dev_t devnum;
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int count;
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struct udev_list_entry *list_entry;
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printf("*** device: %p ***\n", device);
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str = udev_device_get_action(device);
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if (str != NULL)
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printf("action: '%s'\n", str);
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str = udev_device_get_syspath(device);
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printf("syspath: '%s'\n", str);
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str = udev_device_get_sysname(device);
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printf("sysname: '%s'\n", str);
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str = udev_device_get_sysnum(device);
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if (str != NULL)
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printf("sysnum: '%s'\n", str);
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str = udev_device_get_devpath(device);
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printf("devpath: '%s'\n", str);
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str = udev_device_get_subsystem(device);
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if (str != NULL)
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printf("subsystem: '%s'\n", str);
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str = udev_device_get_devtype(device);
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if (str != NULL)
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printf("devtype: '%s'\n", str);
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str = udev_device_get_driver(device);
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if (str != NULL)
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printf("driver: '%s'\n", str);
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str = udev_device_get_devnode(device);
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if (str != NULL)
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printf("devname: '%s'\n", str);
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devnum = udev_device_get_devnum(device);
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if (major(devnum) > 0)
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printf("devnum: %u:%u\n", major(devnum), minor(devnum));
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count = 0;
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udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) {
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printf("link: '%s'\n", udev_list_entry_get_name(list_entry));
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count++;
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}
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if (count > 0)
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printf("found %i links\n", count);
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count = 0;
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udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) {
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printf("property: '%s=%s'\n",
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udev_list_entry_get_name(list_entry),
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udev_list_entry_get_value(list_entry));
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count++;
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}
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if (count > 0)
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printf("found %i properties\n", count);
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str = udev_device_get_property_value(device, "MAJOR");
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if (str != NULL)
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printf("MAJOR: '%s'\n", str);
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str = udev_device_get_sysattr_value(device, "dev");
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if (str != NULL)
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printf("attr{dev}: '%s'\n", str);
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printf("\n");
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}
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static int test_device(struct udev *udev, const char *syspath)
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{
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struct udev_device *device;
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printf("looking at device: %s\n", syspath);
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device = udev_device_new_from_syspath(udev, syspath);
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if (device == NULL) {
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printf("no device found\n");
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return -1;
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}
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print_device(device);
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udev_device_unref(device);
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return 0;
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}
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static int test_device_parents(struct udev *udev, const char *syspath)
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{
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struct udev_device *device;
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struct udev_device *device_parent;
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printf("looking at device: %s\n", syspath);
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device = udev_device_new_from_syspath(udev, syspath);
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if (device == NULL)
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return -1;
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printf("looking at parents\n");
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device_parent = device;
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do {
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print_device(device_parent);
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device_parent = udev_device_get_parent(device_parent);
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} while (device_parent != NULL);
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printf("looking at parents again\n");
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device_parent = device;
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do {
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print_device(device_parent);
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device_parent = udev_device_get_parent(device_parent);
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} while (device_parent != NULL);
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udev_device_unref(device);
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return 0;
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}
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static int test_device_devnum(struct udev *udev)
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{
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dev_t devnum = makedev(1, 3);
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struct udev_device *device;
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printf("looking up device: %u:%u\n", major(devnum), minor(devnum));
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device = udev_device_new_from_devnum(udev, 'c', devnum);
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if (device == NULL)
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return -1;
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print_device(device);
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udev_device_unref(device);
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return 0;
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}
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static int test_device_subsys_name(struct udev *udev)
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{
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struct udev_device *device;
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printf("looking up device: 'block':'sda'\n");
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device = udev_device_new_from_subsystem_sysname(udev, "block", "sda");
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if (device == NULL)
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return -1;
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print_device(device);
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udev_device_unref(device);
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printf("looking up device: 'subsystem':'pci'\n");
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device = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci");
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if (device == NULL)
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return -1;
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print_device(device);
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udev_device_unref(device);
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printf("looking up device: 'drivers':'scsi:sd'\n");
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device = udev_device_new_from_subsystem_sysname(udev, "drivers", "scsi:sd");
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if (device == NULL)
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return -1;
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print_device(device);
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udev_device_unref(device);
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printf("looking up device: 'module':'printk'\n");
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device = udev_device_new_from_subsystem_sysname(udev, "module", "printk");
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if (device == NULL)
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return -1;
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print_device(device);
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udev_device_unref(device);
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return 0;
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}
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static int test_enumerate_print_list(struct udev_enumerate *enumerate)
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{
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struct udev_list_entry *list_entry;
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int count = 0;
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udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) {
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struct udev_device *device;
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device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate),
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udev_list_entry_get_name(list_entry));
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if (device != NULL) {
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printf("device: '%s' (%s)\n",
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udev_device_get_syspath(device),
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udev_device_get_subsystem(device));
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udev_device_unref(device);
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count++;
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}
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}
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printf("found %i devices\n\n", count);
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return count;
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}
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static int test_monitor(struct udev *udev)
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{
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struct udev_monitor *udev_monitor;
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fd_set readfds;
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int fd;
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udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
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if (udev_monitor == NULL) {
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printf("no socket\n");
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return -1;
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}
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if (udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) < 0 ||
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udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) < 0 ||
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udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") < 0) {
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printf("filter failed\n");
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return -1;
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}
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if (udev_monitor_enable_receiving(udev_monitor) < 0) {
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printf("bind failed\n");
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return -1;
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}
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fd = udev_monitor_get_fd(udev_monitor);
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FD_ZERO(&readfds);
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while (1) {
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struct udev_device *device;
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int fdcount;
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FD_SET(STDIN_FILENO, &readfds);
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FD_SET(fd, &readfds);
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printf("waiting for events from udev, press ENTER to exit\n");
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fdcount = select(fd+1, &readfds, NULL, NULL, NULL);
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printf("select fd count: %i\n", fdcount);
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if (FD_ISSET(fd, &readfds)) {
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device = udev_monitor_receive_device(udev_monitor);
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if (device == NULL) {
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printf("no device from socket\n");
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continue;
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}
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print_device(device);
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udev_device_unref(device);
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}
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if (FD_ISSET(STDIN_FILENO, &readfds)) {
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printf("exiting loop\n");
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break;
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}
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}
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udev_monitor_unref(udev_monitor);
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return 0;
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}
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static int test_queue(struct udev *udev)
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{
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struct udev_queue *udev_queue;
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unsigned long long int seqnum;
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struct udev_list_entry *list_entry;
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udev_queue = udev_queue_new(udev);
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if (udev_queue == NULL)
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return -1;
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seqnum = udev_queue_get_kernel_seqnum(udev_queue);
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printf("seqnum kernel: %llu\n", seqnum);
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seqnum = udev_queue_get_udev_seqnum(udev_queue);
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printf("seqnum udev : %llu\n", seqnum);
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if (udev_queue_get_queue_is_empty(udev_queue))
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printf("queue is empty\n");
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printf("get queue list\n");
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udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue))
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printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry));
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printf("\n");
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printf("get queue list again\n");
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udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue))
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printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry));
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printf("\n");
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printf("get failed list\n");
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udev_list_entry_foreach(list_entry, udev_queue_get_failed_list_entry(udev_queue))
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printf("failed: '%s'\n", udev_list_entry_get_name(list_entry));
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printf("\n");
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list_entry = udev_queue_get_queued_list_entry(udev_queue);
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if (list_entry != NULL) {
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printf("event [%llu] is queued\n", seqnum);
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seqnum = strtoull(udev_list_entry_get_value(list_entry), NULL, 10);
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if (udev_queue_get_seqnum_is_finished(udev_queue, seqnum))
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printf("event [%llu] is not finished\n", seqnum);
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else
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printf("event [%llu] is finished\n", seqnum);
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}
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printf("\n");
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udev_queue_unref(udev_queue);
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return 0;
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}
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static int test_enumerate(struct udev *udev, const char *subsystem)
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{
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struct udev_enumerate *udev_enumerate;
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printf("enumerate '%s'\n", subsystem == NULL ? "<all>" : subsystem);
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udev_enumerate = udev_enumerate_new(udev);
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if (udev_enumerate == NULL)
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return -1;
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udev_enumerate_add_match_subsystem(udev_enumerate, subsystem);
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udev_enumerate_scan_devices(udev_enumerate);
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test_enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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printf("enumerate 'net' + duplicated scan + null + zero\n");
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udev_enumerate = udev_enumerate_new(udev);
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if (udev_enumerate == NULL)
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return -1;
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udev_enumerate_add_match_subsystem(udev_enumerate, "net");
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udev_enumerate_scan_devices(udev_enumerate);
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udev_enumerate_scan_devices(udev_enumerate);
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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udev_enumerate_scan_devices(udev_enumerate);
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test_enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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printf("enumerate 'block'\n");
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udev_enumerate = udev_enumerate_new(udev);
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if (udev_enumerate == NULL)
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return -1;
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udev_enumerate_add_match_subsystem(udev_enumerate,"block");
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udev_enumerate_scan_devices(udev_enumerate);
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test_enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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printf("enumerate 'not block'\n");
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udev_enumerate = udev_enumerate_new(udev);
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if (udev_enumerate == NULL)
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return -1;
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udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block");
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udev_enumerate_scan_devices(udev_enumerate);
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test_enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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printf("enumerate 'pci, mem, vc'\n");
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udev_enumerate = udev_enumerate_new(udev);
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if (udev_enumerate == NULL)
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return -1;
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udev_enumerate_add_match_subsystem(udev_enumerate, "pci");
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udev_enumerate_add_match_subsystem(udev_enumerate, "mem");
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udev_enumerate_add_match_subsystem(udev_enumerate, "vc");
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udev_enumerate_scan_devices(udev_enumerate);
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test_enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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printf("enumerate 'subsystem'\n");
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udev_enumerate = udev_enumerate_new(udev);
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if (udev_enumerate == NULL)
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return -1;
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udev_enumerate_scan_subsystems(udev_enumerate);
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test_enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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printf("enumerate 'property IF_FS_*=filesystem'\n");
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udev_enumerate = udev_enumerate_new(udev);
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if (udev_enumerate == NULL)
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return -1;
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udev_enumerate_add_match_property(udev_enumerate, "ID_FS*", "filesystem");
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udev_enumerate_scan_devices(udev_enumerate);
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test_enumerate_print_list(udev_enumerate);
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udev_enumerate_unref(udev_enumerate);
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return 0;
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}
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int main(int argc, char *argv[])
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{
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struct udev *udev = NULL;
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static const struct option options[] = {
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{ "syspath", required_argument, NULL, 'p' },
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{ "subsystem", required_argument, NULL, 's' },
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{ "debug", no_argument, NULL, 'd' },
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, 'V' },
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{}
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};
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const char *syspath = "/devices/virtual/mem/null";
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const char *subsystem = NULL;
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char path[1024];
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const char *str;
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udev = udev_new();
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printf("context: %p\n", udev);
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if (udev == NULL) {
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printf("no context\n");
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return 1;
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}
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udev_set_log_fn(udev, log_fn);
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printf("set log: %p\n", log_fn);
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while (1) {
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int option;
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option = getopt_long(argc, argv, "+dhV", options, NULL);
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if (option == -1)
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break;
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switch (option) {
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case 'p':
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syspath = optarg;
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break;
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case 's':
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subsystem = optarg;
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break;
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case 'd':
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if (udev_get_log_priority(udev) < LOG_INFO)
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udev_set_log_priority(udev, LOG_INFO);
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break;
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case 'h':
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printf("--debug --syspath= --subsystem= --help\n");
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goto out;
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case 'V':
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printf("%s\n", VERSION);
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goto out;
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default:
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goto out;
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}
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}
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str = udev_get_sys_path(udev);
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printf("sys_path: '%s'\n", str);
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str = udev_get_dev_path(udev);
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printf("dev_path: '%s'\n", str);
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/* add sys path if needed */
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if (strncmp(syspath, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0) {
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snprintf(path, sizeof(path), "%s%s", udev_get_sys_path(udev), syspath);
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syspath = path;
|
|
}
|
|
|
|
test_device(udev, syspath);
|
|
test_device_devnum(udev);
|
|
test_device_subsys_name(udev);
|
|
test_device_parents(udev, syspath);
|
|
|
|
test_enumerate(udev, subsystem);
|
|
|
|
test_queue(udev);
|
|
|
|
test_monitor(udev);
|
|
out:
|
|
udev_unref(udev);
|
|
return 0;
|
|
}
|