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f876f537 LP |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2 | ||
3 | #include <errno.h> | |
4 | #include <getopt.h> | |
5 | #include <stdio.h> | |
6 | #include <stdlib.h> | |
7 | ||
8 | #include "sd-bus.h" | |
9 | ||
10 | #include "alloc-util.h" | |
11 | #include "bus-error.h" | |
12 | #include "log.h" | |
5e332028 | 13 | #include "main-func.h" |
f876f537 LP |
14 | #include "util.h" |
15 | ||
16 | static int help(void) { | |
17 | ||
18 | printf("%s [COMMAND] [OPTIONS...]\n" | |
19 | "\n" | |
20 | "Verify system operational state.\n\n" | |
21 | " -h --help Show this help\n" | |
22 | " --version Print version\n", | |
23 | program_invocation_short_name); | |
24 | ||
25 | return 0; | |
26 | } | |
27 | ||
28 | static int parse_argv(int argc, char *argv[]) { | |
29 | enum { | |
30 | ARG_PATH = 0x100, | |
31 | ARG_VERSION, | |
32 | }; | |
33 | ||
34 | static const struct option options[] = { | |
35 | { "help", no_argument, NULL, 'h' }, | |
36 | { "version", no_argument, NULL, ARG_VERSION }, | |
37 | {} | |
38 | }; | |
39 | ||
40 | int c; | |
41 | ||
42 | assert(argc >= 0); | |
43 | assert(argv); | |
44 | ||
45 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
46 | switch (c) { | |
47 | ||
48 | case 'h': | |
49 | help(); | |
50 | return 0; | |
51 | ||
52 | case ARG_VERSION: | |
53 | return version(); | |
54 | ||
55 | case '?': | |
56 | return -EINVAL; | |
57 | ||
58 | default: | |
59 | assert_not_reached("Unknown option"); | |
60 | } | |
61 | ||
62 | return 1; | |
63 | } | |
64 | ||
02434ea2 | 65 | static int run(int argc, char *argv[]) { |
f876f537 LP |
66 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
67 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
68 | uint32_t n; | |
69 | int r; | |
70 | ||
71 | log_parse_environment(); | |
72 | log_open(); | |
73 | ||
74 | r = parse_argv(argc, argv); | |
75 | if (r <= 0) | |
02434ea2 | 76 | return r; |
f876f537 LP |
77 | |
78 | r = sd_bus_open_system(&bus); | |
02434ea2 ZJS |
79 | if (r < 0) |
80 | return log_error_errno(r, "Failed to connect to system bus: %m"); | |
f876f537 LP |
81 | |
82 | r = sd_bus_get_property_trivial( | |
83 | bus, | |
84 | "org.freedesktop.systemd1", | |
85 | "/org/freedesktop/systemd1", | |
86 | "org.freedesktop.systemd1.Manager", | |
87 | "NFailedUnits", | |
88 | &error, | |
89 | 'u', | |
90 | &n); | |
02434ea2 ZJS |
91 | if (r < 0) |
92 | return log_error_errno(r, "Failed to get failed units counter: %s", bus_error_message(&error, r)); | |
f876f537 LP |
93 | |
94 | if (n > 0) | |
95 | log_notice("Health check: %" PRIu32 " units have failed.", n); | |
96 | else | |
97 | log_info("Health check: no failed units."); | |
98 | ||
02434ea2 | 99 | return n > 0; |
f876f537 | 100 | } |
02434ea2 ZJS |
101 | |
102 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |