1 files changed, 162 insertions, 0 deletions
diff --git a/src/udev/udevadm-test.c b/src/udev/udevadm-test.c
new file mode 100644
index 0000000..a029622
--- /dev/null
+++ b/src/udev/udevadm-test.c
@@ -0,0 +1,162 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright © 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
+ */
+
+#include <errno.h>
+#include <getopt.h>
+#include <signal.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/signalfd.h>
+#include <unistd.h>
+
+#include "sd-device.h"
+
+#include "device-private.h"
+#include "device-util.h"
+#include "libudev-util.h"
+#include "path-util.h"
+#include "string-util.h"
+#include "strxcpyx.h"
+#include "udev-builtin.h"
+#include "udev-event.h"
+#include "udevadm.h"
+
+static const char *arg_action = "add";
+static ResolveNameTiming arg_resolve_name_timing = RESOLVE_NAME_EARLY;
+static char arg_syspath[UTIL_PATH_SIZE] = {};
+
+static int help(void) {
+
+        printf("%s test [OPTIONS] DEVPATH\n\n"
+               "Test an event run.\n\n"
+               "  -h --help                            Show this help\n"
+               "  -V --version                         Show package version\n"
+               "  -a --action=ACTION|help              Set action string\n"
+               "  -N --resolve-names=early|late|never  When to resolve names\n"
+               , program_invocation_short_name);
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+        static const struct option options[] = {
+                { "action",        required_argument, NULL, 'a' },
+                { "resolve-names", required_argument, NULL, 'N' },
+                { "version",       no_argument,       NULL, 'V' },
+                { "help",          no_argument,       NULL, 'h' },
+                {}
+        };
+
+        int c;
+
+        while ((c = getopt_long(argc, argv, "a:N:Vh", options, NULL)) >= 0)
+                switch (c) {
+                case 'a': {
+                        DeviceAction a;
+
+                        if (streq(optarg, "help")) {
+                                dump_device_action_table();
+                                return 0;
+                        }
+
+                        a = device_action_from_string(optarg);
+                        if (a < 0)
+                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+                                                       "Invalid action '%s'", optarg);
+
+                        arg_action = optarg;
+                        break;
+                }
+                case 'N':
+                        arg_resolve_name_timing = resolve_name_timing_from_string(optarg);
+                        if (arg_resolve_name_timing < 0)
+                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+                                                       "--resolve-names= must be early, late or never");
+                        break;
+                case 'V':
+                        return print_version();
+                case 'h':
+                        return help();
+                case '?':
+                        return -EINVAL;
+                default:
+                        assert_not_reached("Unknown option");
+                }
+
+        if (!argv[optind])
+                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+                                       "syspath parameter missing.");
+
+        /* add /sys if needed */
+        if (!path_startswith(argv[optind], "/sys"))
+                strscpyl(arg_syspath, sizeof(arg_syspath), "/sys", argv[optind], NULL);
+        else
+                strscpy(arg_syspath, sizeof(arg_syspath), argv[optind]);
+
+        return 1;
+}
+
+int test_main(int argc, char *argv[], void *userdata) {
+        _cleanup_(udev_rules_freep) UdevRules *rules = NULL;
+        _cleanup_(udev_event_freep) UdevEvent *event = NULL;
+        _cleanup_(sd_device_unrefp) sd_device *dev = NULL;
+        const char *cmd, *key, *value;
+        sigset_t mask, sigmask_orig;
+        void *val;
+        int r;
+
+        log_set_max_level(LOG_DEBUG);
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r;
+
+        printf("This program is for debugging only, it does not run any program\n"
+               "specified by a RUN key. It may show incorrect results, because\n"
+               "some values may be different, or not available at a simulation run.\n"
+               "\n");
+
+        assert_se(sigprocmask(SIG_SETMASK, NULL, &sigmask_orig) >= 0);
+
+        udev_builtin_init();
+
+        r = udev_rules_load(&rules, arg_resolve_name_timing);
+        if (r < 0) {
+                log_error_errno(r, "Failed to read udev rules: %m");
+                goto out;
+        }
+
+        r = device_new_from_synthetic_event(&dev, arg_syspath, arg_action);
+        if (r < 0) {
+                log_error_errno(r, "Failed to open device '%s': %m", arg_syspath);
+                goto out;
+        }
+
+        /* don't read info from the db */
+        device_seal(dev);
+
+        event = udev_event_new(dev, 0, NULL);
+
+        assert_se(sigfillset(&mask) >= 0);
+        assert_se(sigprocmask(SIG_SETMASK, &mask, &sigmask_orig) >= 0);
+
+        udev_event_execute_rules(event, 60 * USEC_PER_SEC, SIGKILL, NULL, rules);
+
+        FOREACH_DEVICE_PROPERTY(dev, key, value)
+                printf("%s=%s\n", key, value);
+
+        ORDERED_HASHMAP_FOREACH_KEY(val, cmd, event->run_list) {
+                char program[UTIL_PATH_SIZE];
+
+                (void) udev_event_apply_format(event, cmd, program, sizeof(program), false);
+                printf("run: '%s'\n", program);
+        }
+
+        r = 0;
+out:
+        udev_builtin_exit();
+        return r;
+}