1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 Copyright 2012 Lennart Poettering
14 #include "alloc-util.h"
15 #include "bus-error.h"
18 #include "format-util.h"
20 #include "process-util.h"
21 #include "signal-util.h"
23 #include "user-util.h"
26 static const char* arg_what
= "idle:sleep:shutdown";
27 static const char* arg_who
= NULL
;
28 static const char* arg_why
= "Unknown reason";
29 static const char* arg_mode
= NULL
;
30 static bool arg_no_pager
= false;
35 } arg_action
= ACTION_INHIBIT
;
37 static int inhibit(sd_bus
*bus
, sd_bus_error
*error
) {
38 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
42 r
= sd_bus_call_method(
44 "org.freedesktop.login1",
45 "/org/freedesktop/login1",
46 "org.freedesktop.login1.Manager",
50 "ssss", arg_what
, arg_who
, arg_why
, arg_mode
);
54 r
= sd_bus_message_read_basic(reply
, SD_BUS_TYPE_UNIX_FD
, &fd
);
58 r
= fcntl(fd
, F_DUPFD_CLOEXEC
, 3);
65 static int print_inhibitors(sd_bus
*bus
, sd_bus_error
*error
) {
66 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
67 const char *what
, *who
, *why
, *mode
;
68 unsigned int uid
, pid
;
72 (void) pager_open(arg_no_pager
, false);
74 r
= sd_bus_call_method(
76 "org.freedesktop.login1",
77 "/org/freedesktop/login1",
78 "org.freedesktop.login1.Manager",
86 r
= sd_bus_message_enter_container(reply
, SD_BUS_TYPE_ARRAY
, "(ssssuu)");
88 return bus_log_parse_error(r
);
90 while ((r
= sd_bus_message_read(reply
, "(ssssuu)", &what
, &who
, &why
, &mode
, &uid
, &pid
)) > 0) {
91 _cleanup_free_
char *comm
= NULL
, *u
= NULL
;
93 if (arg_mode
&& !streq(mode
, arg_mode
))
96 get_process_comm(pid
, &comm
);
99 printf(" Who: %s (UID "UID_FMT
"/%s, PID "PID_FMT
"/%s)\n"
103 who
, uid
, strna(u
), pid
, strna(comm
),
111 return bus_log_parse_error(r
);
113 r
= sd_bus_message_exit_container(reply
);
115 return bus_log_parse_error(r
);
117 printf("%u inhibitors listed.\n", n
);
121 static void help(void) {
122 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
123 "Execute a process while inhibiting shutdown/sleep/idle.\n\n"
124 " -h --help Show this help\n"
125 " --version Show package version\n"
126 " --no-pager Do not pipe output into a pager\n"
127 " --what=WHAT Operations to inhibit, colon separated list of:\n"
128 " shutdown, sleep, idle, handle-power-key,\n"
129 " handle-suspend-key, handle-hibernate-key,\n"
130 " handle-lid-switch\n"
131 " --who=STRING A descriptive string who is inhibiting\n"
132 " --why=STRING A descriptive string why is being inhibited\n"
133 " --mode=MODE One of block or delay\n"
134 " --list List active inhibitors\n"
135 , program_invocation_short_name
);
138 static int parse_argv(int argc
, char *argv
[]) {
150 static const struct option options
[] = {
151 { "help", no_argument
, NULL
, 'h' },
152 { "version", no_argument
, NULL
, ARG_VERSION
},
153 { "what", required_argument
, NULL
, ARG_WHAT
},
154 { "who", required_argument
, NULL
, ARG_WHO
},
155 { "why", required_argument
, NULL
, ARG_WHY
},
156 { "mode", required_argument
, NULL
, ARG_MODE
},
157 { "list", no_argument
, NULL
, ARG_LIST
},
158 { "no-pager", no_argument
, NULL
, ARG_NO_PAGER
},
167 while ((c
= getopt_long(argc
, argv
, "+h", options
, NULL
)) >= 0)
195 arg_action
= ACTION_LIST
;
206 assert_not_reached("Unhandled option");
209 if (arg_action
== ACTION_INHIBIT
&& optind
== argc
)
210 arg_action
= ACTION_LIST
;
212 else if (arg_action
== ACTION_INHIBIT
&& optind
>= argc
) {
213 log_error("Missing command line to execute.");
220 int main(int argc
, char *argv
[]) {
221 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
222 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
225 log_parse_environment();
228 r
= parse_argv(argc
, argv
);
234 r
= sd_bus_default_system(&bus
);
236 log_error_errno(r
, "Failed to connect to bus: %m");
240 if (arg_action
== ACTION_LIST
) {
242 r
= print_inhibitors(bus
, &error
);
245 log_error("Failed to list inhibitors: %s", bus_error_message(&error
, -r
));
250 _cleanup_close_
int fd
= -1;
251 _cleanup_free_
char *w
= NULL
;
254 /* Ignore SIGINT and allow the forked process to receive it */
255 (void) ignore_signals(SIGINT
, -1);
258 arg_who
= w
= strv_join(argv
+ optind
, " ");
263 fd
= inhibit(bus
, &error
);
265 log_error("Failed to inhibit: %s", bus_error_message(&error
, fd
));
269 r
= safe_fork("(inhibit)", FORK_RESET_SIGNALS
|FORK_DEATHSIG
|FORK_CLOSE_ALL_FDS
|FORK_LOG
, &pid
);
274 execvp(argv
[optind
], argv
+ optind
);
276 log_error_errno(errno
, "Failed to execute %s: %m", argv
[optind
]);
280 r
= wait_for_terminate_and_check(argv
[optind
], pid
, WAIT_LOG
);
281 return r
< 0 ? EXIT_FAILURE
: r
;