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-rw-r--r--src/run/run.c231
-rw-r--r--src/shared/ptyfwd.c102
-rw-r--r--src/shared/ptyfwd.h8
3 files changed, 283 insertions, 58 deletions
diff --git a/src/run/run.c b/src/run/run.c
index 0797547684..8db9f07158 100644
--- a/src/run/run.c
+++ b/src/run/run.c
@@ -33,6 +33,7 @@
#include "formats-util.h"
#include "parse-util.h"
#include "path-util.h"
+#include "process-util.h"
#include "ptyfwd.h"
#include "signal-util.h"
#include "spawn-polkit-agent.h"
@@ -45,6 +46,7 @@ static bool arg_ask_password = true;
static bool arg_scope = false;
static bool arg_remain_after_exit = false;
static bool arg_no_block = false;
+static bool arg_wait = false;
static const char *arg_unit = NULL;
static const char *arg_description = NULL;
static const char *arg_slice = NULL;
@@ -97,6 +99,7 @@ static void help(void) {
" --slice=SLICE Run in the specified slice\n"
" --no-block Do not wait until operation finished\n"
" -r --remain-after-exit Leave service around until explicitly stopped\n"
+ " --wait Wait until service stopped again\n"
" --send-sighup Send SIGHUP when terminating\n"
" --service-type=TYPE Service type\n"
" --uid=USER Run as system user\n"
@@ -144,6 +147,7 @@ static int parse_argv(int argc, char *argv[]) {
ARG_TIMER_PROPERTY,
ARG_NO_BLOCK,
ARG_NO_ASK_PASSWORD,
+ ARG_WAIT,
};
static const struct option options[] = {
@@ -160,6 +164,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "host", required_argument, NULL, 'H' },
{ "machine", required_argument, NULL, 'M' },
{ "service-type", required_argument, NULL, ARG_SERVICE_TYPE },
+ { "wait", no_argument, NULL, ARG_WAIT },
{ "uid", required_argument, NULL, ARG_EXEC_USER },
{ "gid", required_argument, NULL, ARG_EXEC_GROUP },
{ "nice", required_argument, NULL, ARG_NICE },
@@ -357,6 +362,10 @@ static int parse_argv(int argc, char *argv[]) {
arg_no_block = true;
break;
+ case ARG_WAIT:
+ arg_wait = true;
+ break;
+
case '?':
return -EINVAL;
@@ -404,6 +413,23 @@ static int parse_argv(int argc, char *argv[]) {
return -EINVAL;
}
+ if (arg_wait) {
+ if (arg_no_block) {
+ log_error("--wait may not be combined with --no-block.");
+ return -EINVAL;
+ }
+
+ if (with_timer()) {
+ log_error("--wait may not be combined with timer operations.");
+ return -EINVAL;
+ }
+
+ if (arg_scope) {
+ log_error("--wait may not be combined with --scope.");
+ return -EINVAL;
+ }
+ }
+
return 1;
}
@@ -466,6 +492,12 @@ static int transient_service_set_properties(sd_bus_message *m, char **argv, cons
if (r < 0)
return r;
+ if (arg_wait) {
+ r = sd_bus_message_append(m, "(sv)", "AddRef", "b", 1);
+ if (r < 0)
+ return r;
+ }
+
if (arg_remain_after_exit) {
r = sd_bus_message_append(m, "(sv)", "RemainAfterExit", "b", arg_remain_after_exit);
if (r < 0)
@@ -723,9 +755,97 @@ static int make_unit_name(sd_bus *bus, UnitType t, char **ret) {
return 0;
}
+typedef struct RunContext {
+ sd_bus *bus;
+ sd_event *event;
+ PTYForward *forward;
+ sd_bus_slot *match;
+
+ /* The exit data of the unit */
+ char *active_state;
+ uint64_t inactive_exit_usec;
+ uint64_t inactive_enter_usec;
+ char *result;
+ uint64_t cpu_usage_nsec;
+ uint32_t exit_code;
+ uint32_t exit_status;
+} RunContext;
+
+static void run_context_free(RunContext *c) {
+ assert(c);
+
+ c->forward = pty_forward_free(c->forward);
+ c->match = sd_bus_slot_unref(c->match);
+ c->bus = sd_bus_unref(c->bus);
+ c->event = sd_event_unref(c->event);
+
+ free(c->active_state);
+ free(c->result);
+}
+
+static void run_context_check_done(RunContext *c) {
+ bool done = true;
+
+ assert(c);
+
+ if (c->match)
+ done = done && (c->active_state && STR_IN_SET(c->active_state, "inactive", "failed"));
+
+ if (c->forward)
+ done = done && pty_forward_is_done(c->forward);
+
+ if (done)
+ sd_event_exit(c->event, EXIT_SUCCESS);
+}
+
+static int on_properties_changed(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+
+ static const struct bus_properties_map map[] = {
+ { "ActiveState", "s", NULL, offsetof(RunContext, active_state) },
+ { "InactiveExitTimestampMonotonic", "t", NULL, offsetof(RunContext, inactive_exit_usec) },
+ { "InactiveEnterTimestampMonotonic", "t", NULL, offsetof(RunContext, inactive_enter_usec) },
+ { "Result", "s", NULL, offsetof(RunContext, result) },
+ { "ExecMainCode", "i", NULL, offsetof(RunContext, exit_code) },
+ { "ExecMainStatus", "i", NULL, offsetof(RunContext, exit_status) },
+ { "CPUUsageNSec", "t", NULL, offsetof(RunContext, cpu_usage_nsec) },
+ {}
+ };
+
+ RunContext *c = userdata;
+ int r;
+
+ r = bus_map_all_properties(c->bus,
+ "org.freedesktop.systemd1",
+ sd_bus_message_get_path(m),
+ map,
+ c);
+ if (r < 0) {
+ sd_event_exit(c->event, EXIT_FAILURE);
+ return log_error_errno(r, "Failed to query unit state: %m");
+ }
+
+ run_context_check_done(c);
+ return 0;
+}
+
+static int pty_forward_handler(PTYForward *f, int rcode, void *userdata) {
+ RunContext *c = userdata;
+
+ assert(f);
+
+ if (rcode < 0) {
+ sd_event_exit(c->event, EXIT_FAILURE);
+ return log_error_errno(rcode, "Error on PTY forwarding logic: %m");
+ }
+
+ run_context_check_done(c);
+ return 0;
+}
+
static int start_transient_service(
sd_bus *bus,
- char **argv) {
+ char **argv,
+ int *retval) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
@@ -736,6 +856,7 @@ static int start_transient_service(
assert(bus);
assert(argv);
+ assert(retval);
if (arg_pty) {
@@ -859,40 +980,95 @@ static int start_transient_service(
return r;
}
- if (master >= 0) {
- _cleanup_(pty_forward_freep) PTYForward *forward = NULL;
- _cleanup_(sd_event_unrefp) sd_event *event = NULL;
- char last_char = 0;
+ if (!arg_quiet)
+ log_info("Running as unit: %s", service);
+
+ if (arg_wait || master >= 0) {
+ _cleanup_(run_context_free) RunContext c = {};
- r = sd_event_default(&event);
+ c.bus = sd_bus_ref(bus);
+
+ r = sd_event_default(&c.event);
if (r < 0)
return log_error_errno(r, "Failed to get event loop: %m");
- assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGWINCH, SIGTERM, SIGINT, -1) >= 0);
+ if (master >= 0) {
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGWINCH, SIGTERM, SIGINT, -1) >= 0);
+ (void) sd_event_add_signal(c.event, NULL, SIGINT, NULL, NULL);
+ (void) sd_event_add_signal(c.event, NULL, SIGTERM, NULL, NULL);
+
+ if (!arg_quiet)
+ log_info("Press ^] three times within 1s to disconnect TTY.");
- (void) sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
- (void) sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
+ r = pty_forward_new(c.event, master, PTY_FORWARD_IGNORE_INITIAL_VHANGUP, &c.forward);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create PTY forwarder: %m");
+
+ pty_forward_set_handler(c.forward, pty_forward_handler, &c);
+ }
- if (!arg_quiet)
- log_info("Running as unit: %s\nPress ^] three times within 1s to disconnect TTY.", service);
+ if (arg_wait) {
+ _cleanup_free_ char *path = NULL;
+ const char *mt;
- r = pty_forward_new(event, master, PTY_FORWARD_IGNORE_INITIAL_VHANGUP, &forward);
- if (r < 0)
- return log_error_errno(r, "Failed to create PTY forwarder: %m");
+ path = unit_dbus_path_from_name(service);
+ if (!path)
+ return log_oom();
+
+ mt = strjoina("type='signal',"
+ "sender='org.freedesktop.systemd1',"
+ "path='", path, "',"
+ "interface='org.freedesktop.DBus.Properties',"
+ "member='PropertiesChanged'");
+ r = sd_bus_add_match(bus, &c.match, mt, on_properties_changed, &c);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add properties changed signal.");
- r = sd_event_loop(event);
+ r = sd_bus_attach_event(bus, c.event, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to attach bus to event loop.");
+ }
+
+ r = sd_event_loop(c.event);
if (r < 0)
return log_error_errno(r, "Failed to run event loop: %m");
- pty_forward_get_last_char(forward, &last_char);
+ if (c.forward) {
+ char last_char = 0;
- forward = pty_forward_free(forward);
+ r = pty_forward_get_last_char(c.forward, &last_char);
+ if (r >= 0 && !arg_quiet && last_char != '\n')
+ fputc('\n', stdout);
+ }
- if (!arg_quiet && last_char != '\n')
- fputc('\n', stdout);
+ if (!arg_quiet) {
+ if (!isempty(c.result))
+ log_info("Finished with result: %s", strna(c.result));
- } else if (!arg_quiet)
- log_info("Running as unit: %s", service);
+ if (c.exit_code == CLD_EXITED)
+ log_info("Main processes terminated with: code=%s/status=%i", sigchld_code_to_string(c.exit_code), c.exit_status);
+ else if (c.exit_code > 0)
+ log_info("Main processes terminated with: code=%s/status=%s", sigchld_code_to_string(c.exit_code), signal_to_string(c.exit_status));
+
+ if (c.inactive_enter_usec > 0 && c.inactive_enter_usec != USEC_INFINITY &&
+ c.inactive_exit_usec > 0 && c.inactive_exit_usec != USEC_INFINITY &&
+ c.inactive_enter_usec > c.inactive_exit_usec) {
+ char ts[FORMAT_TIMESPAN_MAX];
+ log_info("Service runtime: %s", format_timespan(ts, sizeof(ts), c.inactive_enter_usec - c.inactive_exit_usec, USEC_PER_MSEC));
+ }
+
+ if (c.cpu_usage_nsec > 0 && c.cpu_usage_nsec != NSEC_INFINITY) {
+ char ts[FORMAT_TIMESPAN_MAX];
+ log_info("CPU time consumed: %s", format_timespan(ts, sizeof(ts), (c.cpu_usage_nsec + NSEC_PER_USEC - 1) / NSEC_PER_USEC, USEC_PER_MSEC));
+ }
+ }
+
+ /* Try to propagate the service's return value */
+ if (c.result && STR_IN_SET(c.result, "success", "exit-code") && c.exit_code == CLD_EXITED)
+ *retval = c.exit_status;
+ else
+ *retval = EXIT_FAILURE;
+ }
return 0;
}
@@ -1195,7 +1371,7 @@ static int start_transient_timer(
int main(int argc, char* argv[]) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_free_ char *description = NULL, *command = NULL;
- int r;
+ int r, retval = EXIT_SUCCESS;
log_parse_environment();
log_open();
@@ -1232,7 +1408,12 @@ int main(int argc, char* argv[]) {
arg_description = description;
}
- r = bus_connect_transport_systemd(arg_transport, arg_host, arg_user, &bus);
+ /* If --wait is used connect via the bus, unconditionally, as ref/unref is not supported via the limited direct
+ * connection */
+ if (arg_wait)
+ r = bus_connect_transport(arg_transport, arg_host, arg_user, &bus);
+ else
+ r = bus_connect_transport_systemd(arg_transport, arg_host, arg_user, &bus);
if (r < 0) {
log_error_errno(r, "Failed to create bus connection: %m");
goto finish;
@@ -1243,12 +1424,12 @@ int main(int argc, char* argv[]) {
else if (with_timer())
r = start_transient_timer(bus, argv + optind);
else
- r = start_transient_service(bus, argv + optind);
+ r = start_transient_service(bus, argv + optind, &retval);
finish:
strv_free(arg_environment);
strv_free(arg_property);
strv_free(arg_timer_property);
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ return r < 0 ? EXIT_FAILURE : retval;
}
diff --git a/src/shared/ptyfwd.c b/src/shared/ptyfwd.c
index 02c03b98d8..24055e772b 100644
--- a/src/shared/ptyfwd.c
+++ b/src/shared/ptyfwd.c
@@ -68,6 +68,8 @@ struct PTYForward {
bool read_from_master:1;
+ bool done:1;
+
bool last_char_set:1;
char last_char;
@@ -76,10 +78,54 @@ struct PTYForward {
usec_t escape_timestamp;
unsigned escape_counter;
+
+ PTYForwardHandler handler;
+ void *userdata;
};
#define ESCAPE_USEC (1*USEC_PER_SEC)
+static void pty_forward_disconnect(PTYForward *f) {
+
+ if (f) {
+ f->stdin_event_source = sd_event_source_unref(f->stdin_event_source);
+ f->stdout_event_source = sd_event_source_unref(f->stdout_event_source);
+
+ f->master_event_source = sd_event_source_unref(f->master_event_source);
+ f->sigwinch_event_source = sd_event_source_unref(f->sigwinch_event_source);
+ f->event = sd_event_unref(f->event);
+
+ if (f->saved_stdout)
+ tcsetattr(STDOUT_FILENO, TCSANOW, &f->saved_stdout_attr);
+ if (f->saved_stdin)
+ tcsetattr(STDIN_FILENO, TCSANOW, &f->saved_stdin_attr);
+
+ f->saved_stdout = f->saved_stdin = false;
+ }
+
+ /* STDIN/STDOUT should not be nonblocking normally, so let's unconditionally reset it */
+ fd_nonblock(STDIN_FILENO, false);
+ fd_nonblock(STDOUT_FILENO, false);
+}
+
+static int pty_forward_done(PTYForward *f, int rcode) {
+ _cleanup_(sd_event_unrefp) sd_event *e = NULL;
+ assert(f);
+
+ if (f->done)
+ return 0;
+
+ e = sd_event_ref(f->event);
+
+ f->done = true;
+ pty_forward_disconnect(f);
+
+ if (f->handler)
+ return f->handler(f, rcode, f->userdata);
+ else
+ return sd_event_exit(e, rcode < 0 ? EXIT_FAILURE : rcode);
+}
+
static bool look_for_escape(PTYForward *f, const char *buffer, size_t n) {
const char *p;
@@ -147,7 +193,7 @@ static int shovel(PTYForward *f) {
f->stdin_event_source = sd_event_source_unref(f->stdin_event_source);
} else {
log_error_errno(errno, "read(): %m");
- return sd_event_exit(f->event, EXIT_FAILURE);
+ return pty_forward_done(f, -errno);
}
} else if (k == 0) {
/* EOF on stdin */
@@ -156,12 +202,10 @@ static int shovel(PTYForward *f) {
f->stdin_event_source = sd_event_source_unref(f->stdin_event_source);
} else {
- /* Check if ^] has been
- * pressed three times within
- * one second. If we get this
- * we quite immediately. */
+ /* Check if ^] has been pressed three times within one second. If we get this we quite
+ * immediately. */
if (look_for_escape(f, f->in_buffer + f->in_buffer_full, k))
- return sd_event_exit(f->event, EXIT_FAILURE);
+ return pty_forward_done(f, -ECANCELED);
f->in_buffer_full += (size_t) k;
}
@@ -181,7 +225,7 @@ static int shovel(PTYForward *f) {
f->master_event_source = sd_event_source_unref(f->master_event_source);
} else {
log_error_errno(errno, "write(): %m");
- return sd_event_exit(f->event, EXIT_FAILURE);
+ return pty_forward_done(f, -errno);
}
} else {
assert(f->in_buffer_full >= (size_t) k);
@@ -211,7 +255,7 @@ static int shovel(PTYForward *f) {
f->master_event_source = sd_event_source_unref(f->master_event_source);
} else {
log_error_errno(errno, "read(): %m");
- return sd_event_exit(f->event, EXIT_FAILURE);
+ return pty_forward_done(f, -errno);
}
} else {
f->read_from_master = true;
@@ -232,7 +276,7 @@ static int shovel(PTYForward *f) {
f->stdout_event_source = sd_event_source_unref(f->stdout_event_source);
} else {
log_error_errno(errno, "write(): %m");
- return sd_event_exit(f->event, EXIT_FAILURE);
+ return pty_forward_done(f, -errno);
}
} else {
@@ -255,7 +299,7 @@ static int shovel(PTYForward *f) {
if ((f->out_buffer_full <= 0 || f->stdout_hangup) &&
(f->in_buffer_full <= 0 || f->master_hangup))
- return sd_event_exit(f->event, EXIT_SUCCESS);
+ return pty_forward_done(f, 0);
}
return 0;
@@ -418,27 +462,8 @@ int pty_forward_new(
}
PTYForward *pty_forward_free(PTYForward *f) {
-
- if (f) {
- sd_event_source_unref(f->stdin_event_source);
- sd_event_source_unref(f->stdout_event_source);
- sd_event_source_unref(f->master_event_source);
- sd_event_source_unref(f->sigwinch_event_source);
- sd_event_unref(f->event);
-
- if (f->saved_stdout)
- tcsetattr(STDOUT_FILENO, TCSANOW, &f->saved_stdout_attr);
- if (f->saved_stdin)
- tcsetattr(STDIN_FILENO, TCSANOW, &f->saved_stdin_attr);
-
- free(f);
- }
-
- /* STDIN/STDOUT should not be nonblocking normally, so let's
- * unconditionally reset it */
- fd_nonblock(STDIN_FILENO, false);
- fd_nonblock(STDOUT_FILENO, false);
-
+ pty_forward_disconnect(f);
+ free(f);
return NULL;
}
@@ -477,8 +502,21 @@ int pty_forward_set_ignore_vhangup(PTYForward *f, bool b) {
return 0;
}
-int pty_forward_get_ignore_vhangup(PTYForward *f) {
+bool pty_forward_get_ignore_vhangup(PTYForward *f) {
assert(f);
return !!(f->flags & PTY_FORWARD_IGNORE_VHANGUP);
}
+
+bool pty_forward_is_done(PTYForward *f) {
+ assert(f);
+
+ return f->done;
+}
+
+void pty_forward_set_handler(PTYForward *f, PTYForwardHandler cb, void *userdata) {
+ assert(f);
+
+ f->handler = cb;
+ f->userdata = userdata;
+}
diff --git a/src/shared/ptyfwd.h b/src/shared/ptyfwd.h
index a046eb4e5e..bd5d5fec0d 100644
--- a/src/shared/ptyfwd.h
+++ b/src/shared/ptyfwd.h
@@ -37,12 +37,18 @@ typedef enum PTYForwardFlags {
PTY_FORWARD_IGNORE_INITIAL_VHANGUP = 4,
} PTYForwardFlags;
+typedef int (*PTYForwardHandler)(PTYForward *f, int rcode, void*userdata);
+
int pty_forward_new(sd_event *event, int master, PTYForwardFlags flags, PTYForward **f);
PTYForward *pty_forward_free(PTYForward *f);
int pty_forward_get_last_char(PTYForward *f, char *ch);
int pty_forward_set_ignore_vhangup(PTYForward *f, bool ignore_vhangup);
-int pty_forward_get_ignore_vhangup(PTYForward *f);
+bool pty_forward_get_ignore_vhangup(PTYForward *f);
+
+bool pty_forward_is_done(PTYForward *f);
+
+void pty_forward_set_handler(PTYForward *f, PTYForwardHandler handler, void *userdata);
DEFINE_TRIVIAL_CLEANUP_FUNC(PTYForward*, pty_forward_free);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-20 03:38:33 +0000