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From 0b344626698e0c42a7da558783d70207f8aed05e Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
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Date: Fri, 11 Oct 2013 19:33:36 -0400
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Subject: [PATCH] drop-ins: check return value
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If the function failed, nothing serious would happen
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because unlink would probably return EFAULT, but this
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would obscure the real error and is a bit sloppy.
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---
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 src/core/unit.c | 3 +++
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 1 file changed, 3 insertions(+)
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diff --git a/src/core/unit.c b/src/core/unit.c
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index 4b97710..1db7d06 100644
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--- a/src/core/unit.c
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+++ b/src/core/unit.c
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@@ -2908,6 +2908,9 @@ int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name) {
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                 return 0;
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         r = drop_in_file(u, mode, name, &p, &q);
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+        if (r < 0)
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+                return r;
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+
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         if (unlink(q) < 0)
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                 r = errno == ENOENT ? 0 : -errno;
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         else