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Merge pull request #13868 from keszybz/run-exit-code

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run: propagate return code/status from the child
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Lennart Poettering 2019-11-13 16:36:11 +01:00 committed by GitHub
commit 4f23a1847a
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2 changed files with 38 additions and 13 deletions
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19
man/systemd-run.xml
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@ -399,8 +399,13 @@
<refsect1>
<title>Exit status</title>
<para>On success, 0 is returned, a non-zero failure
code otherwise.</para>
<para>On success, 0 is returned. If <command>systemd-run</command> failed to start the service, a
non-zero return value will be returned. If <command>systemd-run</command> waits for the service to
terminate, the return value will be propagated from the service. 0 will be returned on success, including
all the cases where systemd considers a service to have exited cleanly, see the discussion of
<varname>SuccessExitStatus=</varname> in
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
</para>
</refsect1>
<refsect1>
@ -503,6 +508,16 @@ There is a screen on:
<programlisting>$ loginctl enable-linger</programlisting>
</example>
<example>
<title>Return value</title>
<programlisting>$ systemd-run --user --wait true
$ systemd-run --user --wait -p SuccessExitStatus=11 bash -c 'exit 11'
$ systemd-run --user --wait -p SuccessExitStatus=SIGUSR1 bash -c 'kill -SIGUSR1 $$$$'</programlisting>
<para>Those three invocations will succeed, i.e. terminate with an exit code of 0.</para>
</example>
</refsect1>
<refsect1>

32
src/run/run.c
View File

@ -16,6 +16,7 @@
#include "bus-wait-for-jobs.h"
#include "calendarspec.h"
#include "env-util.h"
#include "exit-status.h"
#include "fd-util.h"
#include "format-util.h"
#include "main-func.h"
@ -1256,7 +1257,7 @@ static int start_transient_service(
if (arg_wait && !arg_quiet) {
/* Explicitly destroy the PTY forwarder, so that the PTY device is usable again, in its
/* Explicitly destroy the PTY forwarder, so that the PTY device is usable again, with its
* original settings (i.e. proper line breaks), so that we can show the summary in a pretty
* way. */
c.forward = pty_forward_free(c.forward);
@ -1265,43 +1266,52 @@ static int start_transient_service(
log_info("Finished with result: %s", strna(c.result));
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);
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));
log_info("Main processes terminated with: code=%s/status=%s",
sigchld_code_to_string(c.exit_code), signal_to_string(c.exit_status));
if (timestamp_is_set(c.inactive_enter_usec) &&
timestamp_is_set(c.inactive_exit_usec) &&
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));
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 != 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));
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));
}
if (c.ip_ingress_bytes != UINT64_MAX) {
char bytes[FORMAT_BYTES_MAX];
log_info("IP traffic received: %s", format_bytes(bytes, sizeof(bytes), c.ip_ingress_bytes));
log_info("IP traffic received: %s", format_bytes(bytes, sizeof bytes, c.ip_ingress_bytes));
}
if (c.ip_egress_bytes != UINT64_MAX) {
char bytes[FORMAT_BYTES_MAX];
log_info("IP traffic sent: %s", format_bytes(bytes, sizeof(bytes), c.ip_egress_bytes));
log_info("IP traffic sent: %s", format_bytes(bytes, sizeof bytes, c.ip_egress_bytes));
}
if (c.io_read_bytes != UINT64_MAX) {
char bytes[FORMAT_BYTES_MAX];
log_info("IO bytes read: %s", format_bytes(bytes, sizeof(bytes), c.io_read_bytes));
log_info("IO bytes read: %s", format_bytes(bytes, sizeof bytes, c.io_read_bytes));
}
if (c.io_write_bytes != UINT64_MAX) {
char bytes[FORMAT_BYTES_MAX];
log_info("IO bytes written: %s", format_bytes(bytes, sizeof(bytes), c.io_write_bytes));
log_info("IO bytes written: %s", format_bytes(bytes, sizeof bytes, c.io_write_bytes));
}
}
/* Try to propagate the service's return value */
if (c.result && STR_IN_SET(c.result, "success", "exit-code") && c.exit_code == CLD_EXITED)
/* Try to propagate the service's return value. But if the service defines
* e.g. SuccessExitStatus, honour this, and return 0 to mean "success". */
if (streq_ptr(c.result, "success"))
*retval = 0;
else if (streq_ptr(c.result, "exit-code") && c.exit_status > 0)
*retval = c.exit_status;
else if (streq_ptr(c.result, "signal"))
*retval = EXIT_EXCEPTION;
else
*retval = EXIT_FAILURE;
}