X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fudev%2Fudevadm-monitor.c;fp=src%2Fudev%2Fudevadm-monitor.c;h=0000000000000000000000000000000000000000;hb=030329f5dcf08fd0a94c8ad6a54836d38ffe2f43;hp=7ef2e68233deaf0f75731017e7d9685af3235b65;hpb=62a30b2c490512fe22a4e5faacb1d55763ead1e0;p=elogind.git diff --git a/src/udev/udevadm-monitor.c b/src/udev/udevadm-monitor.c deleted file mode 100644 index 7ef2e6823..000000000 --- a/src/udev/udevadm-monitor.c +++ /dev/null @@ -1,276 +0,0 @@ -/* - * Copyright (C) 2004-2010 Kay Sievers - * - * 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 . - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "udev.h" -#include "udev-util.h" - -static bool udev_exit; - -static void sig_handler(int signum) { - if (signum == SIGINT || signum == SIGTERM) - udev_exit = true; -} - -static void print_device(struct udev_device *device, const char *source, int prop) { - struct timespec ts; - - clock_gettime(CLOCK_MONOTONIC, &ts); - printf("%-6s[%"PRI_TIME".%06ld] %-8s %s (%s)\n", - source, - ts.tv_sec, ts.tv_nsec/1000, - udev_device_get_action(device), - udev_device_get_devpath(device), - udev_device_get_subsystem(device)); - if (prop) { - struct udev_list_entry *list_entry; - - udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) - printf("%s=%s\n", - udev_list_entry_get_name(list_entry), - udev_list_entry_get_value(list_entry)); - printf("\n"); - } -} - -static void help(void) { - printf("%s monitor [--property] [--kernel] [--udev] [--help]\n\n" - "Listen to kernel and udev events.\n\n" - " -h --help Show this help\n" - " --version Show package version\n" - " -p --property Print the event properties\n" - " -k --kernel Print kernel uevents\n" - " -u --udev Print udev events\n" - " -s --subsystem-match=SUBSYSTEM[/DEVTYPE] Filter events by subsystem\n" - " -t --tag-match=TAG Filter events by tag\n" - , program_invocation_short_name); -} - -static int adm_monitor(struct udev *udev, int argc, char *argv[]) { - struct sigaction act = {}; - sigset_t mask; - bool prop = false; - bool print_kernel = false; - bool print_udev = false; - _cleanup_udev_list_cleanup_ struct udev_list subsystem_match_list; - _cleanup_udev_list_cleanup_ struct udev_list tag_match_list; - _cleanup_udev_monitor_unref_ struct udev_monitor *udev_monitor = NULL; - _cleanup_udev_monitor_unref_ struct udev_monitor *kernel_monitor = NULL; - _cleanup_close_ int fd_ep = -1; - int fd_kernel = -1, fd_udev = -1; - struct epoll_event ep_kernel, ep_udev; - int c; - - static const struct option options[] = { - { "property", no_argument, NULL, 'p' }, - { "environment", no_argument, NULL, 'e' }, /* alias for -p */ - { "kernel", no_argument, NULL, 'k' }, - { "udev", no_argument, NULL, 'u' }, - { "subsystem-match", required_argument, NULL, 's' }, - { "tag-match", required_argument, NULL, 't' }, - { "help", no_argument, NULL, 'h' }, - {} - }; - - udev_list_init(udev, &subsystem_match_list, true); - udev_list_init(udev, &tag_match_list, true); - - while((c = getopt_long(argc, argv, "pekus:t:h", options, NULL)) >= 0) - switch (c) { - case 'p': - case 'e': - prop = true; - break; - case 'k': - print_kernel = true; - break; - case 'u': - print_udev = true; - break; - case 's': - { - char subsys[UTIL_NAME_SIZE]; - char *devtype; - - strscpy(subsys, sizeof(subsys), optarg); - devtype = strchr(subsys, '/'); - if (devtype != NULL) { - devtype[0] = '\0'; - devtype++; - } - udev_list_entry_add(&subsystem_match_list, subsys, devtype); - break; - } - case 't': - udev_list_entry_add(&tag_match_list, optarg, NULL); - break; - case 'h': - help(); - return 0; - default: - return 1; - } - - if (!print_kernel && !print_udev) { - print_kernel = true; - print_udev = true; - } - - /* set signal handlers */ - act.sa_handler = sig_handler; - act.sa_flags = SA_RESTART; - sigaction(SIGINT, &act, NULL); - sigaction(SIGTERM, &act, NULL); - sigemptyset(&mask); - sigaddset(&mask, SIGINT); - sigaddset(&mask, SIGTERM); - sigprocmask(SIG_UNBLOCK, &mask, NULL); - - fd_ep = epoll_create1(EPOLL_CLOEXEC); - if (fd_ep < 0) { - log_error_errno(errno, "error creating epoll fd: %m"); - return 1; - } - - printf("monitor will print the received events for:\n"); - if (print_udev) { - struct udev_list_entry *entry; - - udev_monitor = udev_monitor_new_from_netlink(udev, "udev"); - if (udev_monitor == NULL) { - fprintf(stderr, "error: unable to create netlink socket\n"); - return 1; - } - udev_monitor_set_receive_buffer_size(udev_monitor, 128*1024*1024); - fd_udev = udev_monitor_get_fd(udev_monitor); - - udev_list_entry_foreach(entry, udev_list_get_entry(&subsystem_match_list)) { - const char *subsys = udev_list_entry_get_name(entry); - const char *devtype = udev_list_entry_get_value(entry); - - if (udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, subsys, devtype) < 0) - fprintf(stderr, "error: unable to apply subsystem filter '%s'\n", subsys); - } - - udev_list_entry_foreach(entry, udev_list_get_entry(&tag_match_list)) { - const char *tag = udev_list_entry_get_name(entry); - - if (udev_monitor_filter_add_match_tag(udev_monitor, tag) < 0) - fprintf(stderr, "error: unable to apply tag filter '%s'\n", tag); - } - - if (udev_monitor_enable_receiving(udev_monitor) < 0) { - fprintf(stderr, "error: unable to subscribe to udev events\n"); - return 2; - } - - memzero(&ep_udev, sizeof(struct epoll_event)); - ep_udev.events = EPOLLIN; - ep_udev.data.fd = fd_udev; - if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) < 0) { - log_error_errno(errno, "fail to add fd to epoll: %m"); - return 2; - } - - printf("UDEV - the event which udev sends out after rule processing\n"); - } - - if (print_kernel) { - struct udev_list_entry *entry; - - kernel_monitor = udev_monitor_new_from_netlink(udev, "kernel"); - if (kernel_monitor == NULL) { - fprintf(stderr, "error: unable to create netlink socket\n"); - return 3; - } - udev_monitor_set_receive_buffer_size(kernel_monitor, 128*1024*1024); - fd_kernel = udev_monitor_get_fd(kernel_monitor); - - udev_list_entry_foreach(entry, udev_list_get_entry(&subsystem_match_list)) { - const char *subsys = udev_list_entry_get_name(entry); - - if (udev_monitor_filter_add_match_subsystem_devtype(kernel_monitor, subsys, NULL) < 0) - fprintf(stderr, "error: unable to apply subsystem filter '%s'\n", subsys); - } - - if (udev_monitor_enable_receiving(kernel_monitor) < 0) { - fprintf(stderr, "error: unable to subscribe to kernel events\n"); - return 4; - } - - memzero(&ep_kernel, sizeof(struct epoll_event)); - ep_kernel.events = EPOLLIN; - ep_kernel.data.fd = fd_kernel; - if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_kernel, &ep_kernel) < 0) { - log_error_errno(errno, "fail to add fd to epoll: %m"); - return 5; - } - - printf("KERNEL - the kernel uevent\n"); - } - printf("\n"); - - while (!udev_exit) { - int fdcount; - struct epoll_event ev[4]; - int i; - - fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1); - if (fdcount < 0) { - if (errno != EINTR) - fprintf(stderr, "error receiving uevent message: %m\n"); - continue; - } - - for (i = 0; i < fdcount; i++) { - if (ev[i].data.fd == fd_kernel && ev[i].events & EPOLLIN) { - struct udev_device *device; - - device = udev_monitor_receive_device(kernel_monitor); - if (device == NULL) - continue; - print_device(device, "KERNEL", prop); - udev_device_unref(device); - } else if (ev[i].data.fd == fd_udev && ev[i].events & EPOLLIN) { - struct udev_device *device; - - device = udev_monitor_receive_device(udev_monitor); - if (device == NULL) - continue; - print_device(device, "UDEV", prop); - udev_device_unref(device); - } - } - } - - return 0; -} - -const struct udevadm_cmd udevadm_monitor = { - .name = "monitor", - .cmd = adm_monitor, - .help = "Listen to kernel and udev events", -};