From c730efd5335cf49ef78008b7d49fc5d5215089eb Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 15 May 2015 20:56:55 +0200
Subject: [PATCH] coredump: make sure we vacuum by default

Only if both keep_free and max_use are actually 0 we can shortcut things
and avoid vacuuming. If either are positive or -1 we need to execute the
vacuuming.

http://lists.freedesktop.org/archives/systemd-devel/2015-April/031382.html
(cherry picked from commit 5470c03b37d8421a903564c2c8028c8b8d67d403)

Cherry-picked from: 5470c03
Resolves: #1222517
---
 man/coredump.conf.xml         | 4 +++-
 src/journal/coredump-vacuum.c | 5 ++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/man/coredump.conf.xml b/man/coredump.conf.xml
index 0b7329b..fd54c59 100644
--- a/man/coredump.conf.xml
+++ b/man/coredump.conf.xml
@@ -134,7 +134,9 @@
         by coredumps might temporarily exceed these limits while
         coredumps are processed. Note that old coredumps are also
         removed based on time via
-        <citerefentry><refentrytitle>systemd-tmpfiles</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para></listitem>
+        <citerefentry><refentrytitle>systemd-tmpfiles</refentrytitle><manvolnum>8</manvolnum></citerefentry>. Set
+        either value to 0 to turn off size based
+        clean-up.</para></listitem>
       </varlistentry>
     </variablelist>
 
diff --git a/src/journal/coredump-vacuum.c b/src/journal/coredump-vacuum.c
index 9b73795..c0347ef 100644
--- a/src/journal/coredump-vacuum.c
+++ b/src/journal/coredump-vacuum.c
@@ -103,8 +103,7 @@ static bool vacuum_necessary(int fd, off_t sum, off_t keep_free, off_t max_use)
 
                         if (max_use < DEFAULT_MAX_USE_LOWER)
                                 max_use = DEFAULT_MAX_USE_LOWER;
-                }
-                else
+                } else
                         max_use = DEFAULT_MAX_USE_LOWER;
         } else
                 max_use = PAGE_ALIGN(max_use);
@@ -135,7 +134,7 @@ int coredump_vacuum(int exclude_fd, off_t keep_free, off_t max_use) {
         struct stat exclude_st;
         int r;
 
-        if (keep_free <= 0 && max_use <= 0)
+        if (keep_free == 0 && max_use == 0)
                 return 0;
 
         if (exclude_fd >= 0) {