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From caff38650c2c1ae9244a30b87275db3d3a5e3b5d Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Tue, 28 Apr 2015 12:12:29 +0200
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Subject: [PATCH] bus-util: print correct warnings for units that fail but for
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 which we have a NULL result only
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Cherry-picked from: 373a99e
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Related: #1016680
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---
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 src/libsystemd/sd-bus/bus-util.c | 34 +++++++++++++++++++-------------
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 1 file changed, 20 insertions(+), 14 deletions(-)
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diff --git a/src/libsystemd/sd-bus/bus-util.c b/src/libsystemd/sd-bus/bus-util.c
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index 017fbaf2a3..e48abf55a3 100644
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--- a/src/libsystemd/sd-bus/bus-util.c
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+++ b/src/libsystemd/sd-bus/bus-util.c
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@@ -1724,28 +1724,34 @@ static const struct {
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 };
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 static void log_job_error_with_service_result(const char* service, const char *result) {
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-        unsigned i;
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         _cleanup_free_ char *service_shell_quoted = NULL;
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         assert(service);
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-        assert(result);
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         service_shell_quoted = shell_maybe_quote(service);
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-        for (i = 0; i < ELEMENTSOF(explanations); ++i)
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-                if (streq(result, explanations[i].result))
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-                        break;
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+        if (!isempty(result)) {
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+                unsigned i;
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-        if (i < ELEMENTSOF(explanations))
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-                log_error("Job for %s failed because %s. See \"systemctl status %s\" and \"journalctl -xe\" for details.\n",
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-                          service,
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-                          explanations[i].explanation,
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-                          strna(service_shell_quoted));
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-        else
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-                log_error("Job for %s failed. See \"systemctl status %s\" and \"journalctl -xe\" for details.\n",
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-                          service,
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-                          strna(service_shell_quoted));
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+                for (i = 0; i < ELEMENTSOF(explanations); ++i)
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+                        if (streq(result, explanations[i].result))
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+                                break;
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+
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+                if (i < ELEMENTSOF(explanations)) {
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+                        log_error("Job for %s failed because %s. See \"systemctl status %s\" and \"journalctl -xe\" for details.\n",
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+                                  service,
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+                                  explanations[i].explanation,
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+                                  strna(service_shell_quoted));
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+                        goto finish;
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+                }
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+        }
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+
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+        log_error("Job for %s failed. See \"systemctl status %s\" and \"journalctl -xe\" for details.\n",
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+                  service,
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+                  strna(service_shell_quoted));
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+
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+finish:
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         /* For some results maybe additional explanation is required */
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         if (streq_ptr(result, "start-limit"))
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                 log_info("To force a start use \"systemctl reset-failed %1$s\" followed by \"systemctl start %1$s\" again.",