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machine: operation should not send a response when 'done' callback set
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parent
9d8f5e22f8
commit
10a48938ef
@ -8,7 +8,7 @@
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#include "operation.h"
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#include "process-util.h"
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static int operation_done_internal(const siginfo_t *si, Operation *o, sd_bus_error *error) {
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static int read_operation_errno(const siginfo_t *si, Operation *o) {
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int r;
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assert(si);
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@ -27,15 +27,6 @@ static int operation_done_internal(const siginfo_t *si, Operation *o, sd_bus_err
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return log_debug_errno(SYNTHETIC_ERRNO(EIO), "Received unexpectedly short message when reading operation's errno");
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}
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if (o->done)
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/* A completion routine is set for this operation, call it. */
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return o->done(o, r, error);
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/* The default operation when done is to simply return an error on failure or an empty success
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* message on success. */
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if (r < 0)
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log_debug_errno(r, "Operation failed: %m");
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return r;
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}
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@ -51,10 +42,18 @@ static int operation_done(sd_event_source *s, const siginfo_t *si, void *userdat
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o->pid = 0;
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r = read_operation_errno(si, o);
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if (r < 0)
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log_debug_errno(r, "Operation failed: %m");
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/* If a completion routine (o->done) is set for this operation, call it. It sends a response, but can return an error in which case it expect us to reply.
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* Otherwise, the default action is to simply return an error on failure or an empty success message on success. */
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if (o->message) {
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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if (o->done)
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r = o->done(o, r, &error);
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r = operation_done_internal(si, o, &error);
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if (r < 0) {
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if (!sd_bus_error_is_set(&error))
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sd_bus_error_set_errno(&error, r);
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@ -62,16 +61,20 @@ static int operation_done(sd_event_source *s, const siginfo_t *si, void *userdat
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r = sd_bus_reply_method_error(o->message, &error);
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if (r < 0)
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log_error_errno(r, "Failed to reply to dbus message: %m");
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} else {
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} else if (!o->done) {
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/* when o->done set it's responsible for sending reply in a happy-path case */
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r = sd_bus_reply_method_return(o->message, NULL);
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if (r < 0)
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log_error_errno(r, "Failed to reply to dbus message: %m");
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}
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} else if (o->link) {
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r = operation_done_internal(si, o, /* error = */ NULL);
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if (o->done)
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r = o->done(o, r, /* error = */ NULL);
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if (r < 0)
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(void) sd_varlink_error_errno(o->link, r);
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else
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else if (!o->done)
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/* when o->done set it's responsible for sending reply in a happy-path case */
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(void) sd_varlink_reply(o->link, NULL);
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} else
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assert_not_reached();
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