journal: add LZ4 as optional compressor

[elogind.git] / src / journal / sd-journal.c

diff --git a/src/journal/sd-journal.c b/src/journal/sd-journal.c
index ca805f83fe41fb18ac831bc915db0c2624fd0edb..96ba2bd11e1ba2db11d27dd51d75a197de329a39 100644 (file)
--- a/src/journal/sd-journal.c
+++ b/src/journal/sd-journal.c
@@ -1995,28 +1995,24 @@ _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **
 
                 l = le64toh(o->object.size) - offsetof(Object, data.payload);
 
-                if (o->object.flags & OBJECT_COMPRESSED) {
+                if ((o->object.flags & OBJECT_COMPRESSION_MASK) &&
+                    decompress_startswith(o->object.flags & OBJECT_COMPRESSION_MASK,
+                                          o->data.payload, l,
+                                          &f->compress_buffer, &f->compress_buffer_size,
+                                          field, field_length, '=')) {
 
-#ifdef HAVE_XZ
-                        if (uncompress_startswith(o->data.payload, l,
-                                                  &f->compress_buffer, &f->compress_buffer_size,
-                                                  field, field_length, '=')) {
-
-                                uint64_t rsize;
+                        uint64_t rsize;
 
-                                if (!uncompress_blob(o->data.payload, l,
-                                                     &f->compress_buffer, &f->compress_buffer_size, &rsize,
-                                                     j->data_threshold))
-                                        return -EBADMSG;
+                        r = decompress_blob_xz(o->data.payload, l,
+                                               &f->compress_buffer, &f->compress_buffer_size, &rsize,
+                                               j->data_threshold);
+                        if (r < 0)
+                                return r;
 
-                                *data = f->compress_buffer;
-                                *size = (size_t) rsize;
+                        *data = f->compress_buffer;
+                        *size = (size_t) rsize;
 
-                                return 0;
-                        }
-#else
-                        return -EPROTONOSUPPORT;
-#endif
+                        return 0;
 
                 } else if (l >= field_length+1 &&
                            memcmp(o->data.payload, field, field_length) == 0 &&
@@ -2052,11 +2048,11 @@ static int return_data(sd_journal *j, JournalFile *f, Object *o, const void **da
         if ((uint64_t) t != l)
                 return -E2BIG;
 
-        if (o->object.flags & OBJECT_COMPRESSED) {
+        if (o->object.flags & OBJECT_COMPRESSED_XZ) {
 #ifdef HAVE_XZ
                 uint64_t rsize;
 
-                if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize, j->data_threshold))
+                if (!decompress_blob_xz(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize, j->data_threshold))
                         return -EBADMSG;
 
                 *data = f->compress_buffer;