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-rw-r--r--src/journal/compress.c12
-rw-r--r--src/journal/compress.h13
-rw-r--r--src/journal/journal-file.c2
-rw-r--r--src/journal/test-compress-benchmark.c7
-rw-r--r--src/journal/test-compress.c12
5 files changed, 26 insertions, 20 deletions
diff --git a/src/journal/compress.c b/src/journal/compress.c
index a3de0882a5..e1ab4a46f5 100644
--- a/src/journal/compress.c
+++ b/src/journal/compress.c
@@ -58,7 +58,8 @@ static const char* const object_compressed_table[_OBJECT_COMPRESSED_MAX] = {
DEFINE_STRING_TABLE_LOOKUP(object_compressed, int);
-int compress_blob_xz(const void *src, uint64_t src_size, void *dst, size_t *dst_size) {
+int compress_blob_xz(const void *src, uint64_t src_size,
+ void *dst, size_t dst_alloc_size, size_t *dst_size) {
#ifdef HAVE_XZ
static const lzma_options_lzma opt = {
1u << 20u, NULL, 0, LZMA_LC_DEFAULT, LZMA_LP_DEFAULT,
@@ -74,6 +75,7 @@ int compress_blob_xz(const void *src, uint64_t src_size, void *dst, size_t *dst_
assert(src);
assert(src_size > 0);
assert(dst);
+ assert(dst_alloc_size > 0);
assert(dst_size);
/* Returns < 0 if we couldn't compress the data or the
@@ -83,7 +85,7 @@ int compress_blob_xz(const void *src, uint64_t src_size, void *dst, size_t *dst_
return -ENOBUFS;
ret = lzma_stream_buffer_encode((lzma_filter*) filters, LZMA_CHECK_NONE, NULL,
- src, src_size, dst, &out_pos, src_size - 1);
+ src, src_size, dst, &out_pos, dst_alloc_size);
if (ret != LZMA_OK)
return -ENOBUFS;
@@ -94,13 +96,15 @@ int compress_blob_xz(const void *src, uint64_t src_size, void *dst, size_t *dst_
#endif
}
-int compress_blob_lz4(const void *src, uint64_t src_size, void *dst, size_t *dst_size) {
+int compress_blob_lz4(const void *src, uint64_t src_size,
+ void *dst, size_t dst_alloc_size, size_t *dst_size) {
#ifdef HAVE_LZ4
int r;
assert(src);
assert(src_size > 0);
assert(dst);
+ assert(dst_alloc_size > 0);
assert(dst_size);
/* Returns < 0 if we couldn't compress the data or the
@@ -109,7 +113,7 @@ int compress_blob_lz4(const void *src, uint64_t src_size, void *dst, size_t *dst
if (src_size < 9)
return -ENOBUFS;
- r = LZ4_compress_limitedOutput(src, dst + 8, src_size, src_size - 8 - 1);
+ r = LZ4_compress_limitedOutput(src, dst + 8, src_size, (int) dst_alloc_size - 8);
if (r <= 0)
return -ENOBUFS;
diff --git a/src/journal/compress.h b/src/journal/compress.h
index 9a065eb763..758598730a 100644
--- a/src/journal/compress.h
+++ b/src/journal/compress.h
@@ -28,17 +28,20 @@
const char* object_compressed_to_string(int compression);
int object_compressed_from_string(const char *compression);
-int compress_blob_xz(const void *src, uint64_t src_size, void *dst, size_t *dst_size);
-int compress_blob_lz4(const void *src, uint64_t src_size, void *dst, size_t *dst_size);
+int compress_blob_xz(const void *src, uint64_t src_size,
+ void *dst, size_t dst_alloc_size, size_t *dst_size);
+int compress_blob_lz4(const void *src, uint64_t src_size,
+ void *dst, size_t dst_alloc_size, size_t *dst_size);
-static inline int compress_blob(const void *src, uint64_t src_size, void *dst, size_t *dst_size) {
+static inline int compress_blob(const void *src, uint64_t src_size,
+ void *dst, size_t dst_alloc_size, size_t *dst_size) {
int r;
#ifdef HAVE_LZ4
- r = compress_blob_lz4(src, src_size, dst, dst_size);
+ r = compress_blob_lz4(src, src_size, dst, dst_alloc_size, dst_size);
if (r == 0)
return OBJECT_COMPRESSED_LZ4;
#else
- r = compress_blob_xz(src, src_size, dst, dst_size);
+ r = compress_blob_xz(src, src_size, dst, dst_alloc_size, dst_size);
if (r == 0)
return OBJECT_COMPRESSED_XZ;
#endif
diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c
index f9ff9545dd..751e1423fc 100644
--- a/src/journal/journal-file.c
+++ b/src/journal/journal-file.c
@@ -1085,7 +1085,7 @@ static int journal_file_append_data(
if (JOURNAL_FILE_COMPRESS(f) && size >= COMPRESSION_SIZE_THRESHOLD) {
size_t rsize = 0;
- compression = compress_blob(data, size, o->data.payload, &rsize);
+ compression = compress_blob(data, size, o->data.payload, size - 1, &rsize);
if (compression >= 0) {
o->object.size = htole64(offsetof(Object, data.payload) + rsize);
diff --git a/src/journal/test-compress-benchmark.c b/src/journal/test-compress-benchmark.c
index 93ea9c6318..baed0d82a4 100644
--- a/src/journal/test-compress-benchmark.c
+++ b/src/journal/test-compress-benchmark.c
@@ -27,7 +27,8 @@
#include "string-util.h"
#include "util.h"
-typedef int (compress_t)(const void *src, uint64_t src_size, void *dst, size_t *dst_size);
+typedef int (compress_t)(const void *src, uint64_t src_size, void *dst,
+ size_t dst_alloc_size, size_t *dst_size);
typedef int (decompress_t)(const void *src, uint64_t src_size,
void **dst, size_t *dst_alloc_size, size_t* dst_size, size_t dst_max);
@@ -111,8 +112,8 @@ static void test_compress_decompress(const char* label, const char* type,
memzero(buf, MIN(size + 1000, MAX_SIZE));
- r = compress(text, size, buf, &j);
- /* assume compression must be successful except for small inputs */
+ r = compress(text, size, buf, size, &j);
+ /* assume compression must be successful except for small or random inputs */
assert_se(r == 0 || (size < 2048 && r == -ENOBUFS) || streq(type, "random"));
/* check for overwrites */
diff --git a/src/journal/test-compress.c b/src/journal/test-compress.c
index b9d90a8988..62b5a508be 100644
--- a/src/journal/test-compress.c
+++ b/src/journal/test-compress.c
@@ -38,7 +38,7 @@
#endif
typedef int (compress_blob_t)(const void *src, uint64_t src_size,
- void *dst, size_t *dst_size);
+ void *dst, size_t dst_alloc_size, size_t *dst_size);
typedef int (decompress_blob_t)(const void *src, uint64_t src_size,
void **dst, size_t *dst_alloc_size,
size_t* dst_size, size_t dst_max);
@@ -57,15 +57,14 @@ static void test_compress_decompress(int compression,
size_t data_len,
bool may_fail) {
char compressed[512];
- size_t csize = 512;
- size_t usize = 0;
+ size_t csize, usize = 0;
_cleanup_free_ char *decompressed = NULL;
int r;
log_info("/* testing %s %s blob compression/decompression */",
object_compressed_to_string(compression), data);
- r = compress(data, data_len, compressed, &csize);
+ r = compress(data, data_len, compressed, sizeof(compressed), &csize);
if (r == -ENOBUFS) {
log_info_errno(r, "compression failed: %m");
assert_se(may_fail);
@@ -102,15 +101,14 @@ static void test_decompress_startswith(int compression,
bool may_fail) {
char compressed[512];
- size_t csize = 512;
- size_t usize = 0;
+ size_t csize, usize = 0;
_cleanup_free_ char *decompressed = NULL;
int r;
log_info("/* testing decompress_startswith with %s on %s text*/",
object_compressed_to_string(compression), data);
- r = compress(data, data_len, compressed, &csize);
+ r = compress(data, data_len, compressed, sizeof(compressed), &csize);
if (r == -ENOBUFS) {
log_info_errno(r, "compression failed: %m");
assert_se(may_fail);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-23 17:40:24 +0000