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core: Propagate exit status via notify socket when running in VM
When running in a container, we can propagate the exit status of pid1 as usual via the process exit status. This is not possible when running in a VM. Instead, let's send EXIT_STATUS=%i via the notify socket if one is configured. The user running the VM can then pick up the exit status from the notify socket after the VM has shut down.
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@ -3105,6 +3105,10 @@ finish:
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error_message = "Failed to execute shutdown binary";
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}
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/* This is primarily useful when running systemd in a VM, as it provides the user running the VM with
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* a mechanism to pick up systemd's exit status in the VM. */
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(void) sd_notifyf(0, "EXIT_STATUS=%i", retval);
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watchdog_free_device();
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arg_watchdog_device = mfree(arg_watchdog_device);
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@ -14,6 +14,8 @@
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#include <sys/stat.h>
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#include <unistd.h>
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#include "sd-daemon.h"
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#include "alloc-util.h"
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#include "async.h"
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#include "binfmt-util.h"
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@ -570,6 +572,10 @@ int main(int argc, char *argv[]) {
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if (!in_container)
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sync_with_progress();
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/* This is primarily useful when running systemd in a VM, as it provides the user running the VM with
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* a mechanism to pick up systemd's exit status in the VM. */
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(void) sd_notifyf(0, "EXIT_STATUS=%i", arg_exit_code);
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if (streq(arg_verb, "exit")) {
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if (in_container) {
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log_info("Exiting container.");
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