daandemeyer / rpms / systemd

Forked from rpms/systemd 2 years ago
Clone
1abbee
From f45b66a348f5778bd391ad1b0a0e09bf5789b415 Mon Sep 17 00:00:00 2001
84a0ce
From: Lennart Poettering <lennart@poettering.net>
84a0ce
Date: Sat, 24 Oct 2015 13:17:54 +0200
84a0ce
Subject: [PATCH] journal: fix error handling when compressing journal objects
84a0ce
84a0ce
Let's make sure we handle compression errors properly, and don't
84a0ce
misunderstand an error for success.
84a0ce
84a0ce
Also, let's actually compress things if lz4 is enabled.
84a0ce
84a0ce
Fixes #1662.
84a0ce
84a0ce
Cherry-picked from: d1afbcd22170e95c79261340071d376fe41fc3af
84a0ce
Resolves: #1292447
84a0ce
---
84a0ce
 src/journal/journal-file.c | 12 +++++++-----
84a0ce
 src/journal/journal-file.h |  5 +++++
84a0ce
 2 files changed, 12 insertions(+), 5 deletions(-)
84a0ce
84a0ce
diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c
c62b8e
index f500568fec..a8f92e23a9 100644
84a0ce
--- a/src/journal/journal-file.c
84a0ce
+++ b/src/journal/journal-file.c
84a0ce
@@ -1051,23 +1051,25 @@ static int journal_file_append_data(
84a0ce
         o->data.hash = htole64(hash);
84a0ce
 
84a0ce
 #if defined(HAVE_XZ) || defined(HAVE_LZ4)
84a0ce
-        if (f->compress_xz &&
84a0ce
-            size >= COMPRESSION_SIZE_THRESHOLD) {
84a0ce
+        if (JOURNAL_FILE_COMPRESS(f) && size >= COMPRESSION_SIZE_THRESHOLD) {
84a0ce
                 size_t rsize;
84a0ce
 
84a0ce
                 compression = compress_blob(data, size, o->data.payload, &rsize);
84a0ce
 
84a0ce
-                if (compression) {
84a0ce
+                if (compression >= 0) {
84a0ce
                         o->object.size = htole64(offsetof(Object, data.payload) + rsize);
84a0ce
                         o->object.flags |= compression;
84a0ce
 
84a0ce
                         log_debug("Compressed data object %"PRIu64" -> %zu using %s",
84a0ce
                                   size, rsize, object_compressed_to_string(compression));
84a0ce
-                }
84a0ce
+                } else
84a0ce
+                        /* Compression didn't work, we don't really care why, let's continue without compression */
84a0ce
+                        compression = 0;
84a0ce
+
84a0ce
         }
84a0ce
 #endif
84a0ce
 
84a0ce
-        if (!compression && size > 0)
84a0ce
+        if (compression == 0 && size > 0)
84a0ce
                 memcpy(o->data.payload, data, size);
84a0ce
 
84a0ce
         r = journal_file_link_data(f, o, p, hash);
84a0ce
diff --git a/src/journal/journal-file.h b/src/journal/journal-file.h
c62b8e
index 403c8f760c..0f29b092b7 100644
84a0ce
--- a/src/journal/journal-file.h
84a0ce
+++ b/src/journal/journal-file.h
84a0ce
@@ -229,3 +229,8 @@ int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *
84a0ce
 int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot, usec_t *from, usec_t *to);
84a0ce
 
84a0ce
 bool journal_file_rotate_suggested(JournalFile *f, usec_t max_file_usec);
84a0ce
+
84a0ce
+static inline bool JOURNAL_FILE_COMPRESS(JournalFile *f) {
84a0ce
+        assert(f);
84a0ce
+        return f->compress_xz || f->compress_lz4;
84a0ce
+}