#include <sys/statvfs.h>
#include <fcntl.h>
#include <stddef.h>
-
-#ifdef HAVE_XATTR
-#include <attr/xattr.h>
-#endif
+#include <sys/xattr.h>
#include "journal-def.h"
#include "journal-file.h"
if (f->mmap)
mmap_cache_unref(f->mmap);
- hashmap_free_free(f->chain_cache);
+ ordered_hashmap_free_free(f->chain_cache);
-#ifdef HAVE_XZ
+#if defined(HAVE_XZ) || defined(HAVE_LZ4)
free(f->compress_buffer);
#endif
}
static int journal_file_init_header(JournalFile *f, JournalFile *template) {
- Header h;
+ Header h = {};
ssize_t k;
int r;
assert(f);
- zero(h);
memcpy(h.signature, HEADER_SIGNATURE, 8);
h.header_size = htole64(ALIGN64(sizeof(h)));
- h.incompatible_flags =
- htole32(f->compress ? HEADER_INCOMPATIBLE_COMPRESSED : 0);
+ h.incompatible_flags |= htole32(
+ f->compress_xz * HEADER_INCOMPATIBLE_COMPRESSED_XZ |
+ f->compress_lz4 * HEADER_INCOMPATIBLE_COMPRESSED_LZ4);
- h.compatible_flags =
- htole32(f->seal ? HEADER_COMPATIBLE_SEALED : 0);
+ h.compatible_flags = htole32(
+ f->seal * HEADER_COMPATIBLE_SEALED);
r = sd_id128_randomize(&h.file_id);
if (r < 0)
}
static int journal_file_verify_header(JournalFile *f) {
+ uint32_t flags;
+
assert(f);
if (memcmp(f->header->signature, HEADER_SIGNATURE, 8))
/* In both read and write mode we refuse to open files with
* incompatible flags we don't know */
-#ifdef HAVE_XZ
- if ((le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) != 0)
+ flags = le32toh(f->header->incompatible_flags);
+ if (flags & ~HEADER_INCOMPATIBLE_SUPPORTED) {
+ if (flags & ~HEADER_INCOMPATIBLE_ANY)
+ log_debug("Journal file %s has unknown incompatible flags %"PRIx32,
+ f->path, flags & ~HEADER_INCOMPATIBLE_ANY);
+ flags = (flags & HEADER_INCOMPATIBLE_ANY) & ~HEADER_INCOMPATIBLE_SUPPORTED;
+ if (flags)
+ log_debug("Journal file %s uses incompatible flags %"PRIx32
+ " disabled at compilation time.", f->path, flags);
return -EPROTONOSUPPORT;
-#else
- if (f->header->incompatible_flags != 0)
- return -EPROTONOSUPPORT;
-#endif
+ }
/* When open for writing we refuse to open files with
* compatible flags, too */
- if (f->writable) {
-#ifdef HAVE_GCRYPT
- if ((le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) != 0)
- return -EPROTONOSUPPORT;
-#else
- if (f->header->compatible_flags != 0)
- return -EPROTONOSUPPORT;
-#endif
+ flags = le32toh(f->header->compatible_flags);
+ if (f->writable && (flags & ~HEADER_COMPATIBLE_SUPPORTED)) {
+ if (flags & ~HEADER_COMPATIBLE_ANY)
+ log_debug("Journal file %s has unknown compatible flags %"PRIx32,
+ f->path, flags & ~HEADER_COMPATIBLE_ANY);
+ flags = (flags & HEADER_COMPATIBLE_ANY) & ~HEADER_COMPATIBLE_SUPPORTED;
+ if (flags)
+ log_debug("Journal file %s uses compatible flags %"PRIx32
+ " disabled at compilation time.", f->path, flags);
+ return -EPROTONOSUPPORT;
}
if (f->header->state >= _STATE_MAX)
!VALID64(le64toh(f->header->entry_array_offset)))
return -ENODATA;
- if (le64toh(f->header->data_hash_table_offset) < le64toh(f->header->header_size) ||
- le64toh(f->header->field_hash_table_offset) < le64toh(f->header->header_size) ||
- le64toh(f->header->tail_object_offset) < le64toh(f->header->header_size) ||
- le64toh(f->header->entry_array_offset) < le64toh(f->header->header_size))
- return -ENODATA;
-
if (f->writable) {
uint8_t state;
sd_id128_t machine_id;
}
}
- f->compress = JOURNAL_HEADER_COMPRESSED(f->header);
+ f->compress_xz = JOURNAL_HEADER_COMPRESSED_XZ(f->header);
+ f->compress_lz4 = JOURNAL_HEADER_COMPRESSED_LZ4(f->header);
f->seal = JOURNAL_HEADER_SEALED(f->header);
return 0;
}
-static int journal_file_move_to(JournalFile *f, int context, bool keep_always, uint64_t offset, uint64_t size, void **ret) {
+static unsigned type_to_context(ObjectType type) {
+ /* One context for each type, plus one catch-all for the rest */
+ assert_cc(_OBJECT_TYPE_MAX <= MMAP_CACHE_MAX_CONTEXTS);
+ return type > OBJECT_UNUSED && type < _OBJECT_TYPE_MAX ? type : 0;
+}
+
+static int journal_file_move_to(JournalFile *f, ObjectType type, bool keep_always, uint64_t offset, uint64_t size, void **ret) {
assert(f);
assert(ret);
return -EADDRNOTAVAIL;
}
- return mmap_cache_get(f->mmap, f->fd, f->prot, context, keep_always, offset, size, &f->last_stat, ret);
+ return mmap_cache_get(f->mmap, f->fd, f->prot, type_to_context(type), keep_always, offset, size, &f->last_stat, ret);
}
static uint64_t minimum_header_size(Object *o) {
return table[o->object.type];
}
-int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret) {
+int journal_file_move_to_object(JournalFile *f, ObjectType type, uint64_t offset, Object **ret) {
int r;
void *t;
Object *o;
if (!VALID64(offset))
return -EFAULT;
-
- r = journal_file_move_to(f, type_to_context(type), false, offset, sizeof(ObjectHeader), &t);
+ r = journal_file_move_to(f, type, false, offset, sizeof(ObjectHeader), &t);
if (r < 0)
return r;
if (s < minimum_header_size(o))
return -EBADMSG;
- if (type > 0 && o->object.type != type)
+ if (type > OBJECT_UNUSED && o->object.type != type)
return -EBADMSG;
if (s > sizeof(ObjectHeader)) {
- r = journal_file_move_to(f, o->object.type, false, offset, s, &t);
+ r = journal_file_move_to(f, type, false, offset, s, &t);
if (r < 0)
return r;
return r;
}
-int journal_file_append_object(JournalFile *f, int type, uint64_t size, Object **ret, uint64_t *offset) {
+int journal_file_append_object(JournalFile *f, ObjectType type, uint64_t size, Object **ret, uint64_t *offset) {
int r;
uint64_t p;
Object *tail, *o;
void *t;
assert(f);
- assert(type > 0 && type < _OBJECT_TYPE_MAX);
+ assert(type > OBJECT_UNUSED && type < _OBJECT_TYPE_MAX);
assert(size >= sizeof(ObjectHeader));
assert(offset);
assert(ret);
if (p == 0)
p = le64toh(f->header->header_size);
else {
- r = journal_file_move_to_object(f, -1, p, &tail);
+ r = journal_file_move_to_object(f, OBJECT_UNUSED, p, &tail);
if (r < 0)
return r;
if (le64toh(o->data.hash) != hash)
goto next;
- if (o->object.flags & OBJECT_COMPRESSED) {
-#ifdef HAVE_XZ
- uint64_t l, rsize;
+ if (o->object.flags & OBJECT_COMPRESSION_MASK) {
+#if defined(HAVE_XZ) || defined(HAVE_LZ4)
+ uint64_t l;
+ size_t rsize;
l = le64toh(o->object.size);
if (l <= offsetof(Object, data.payload))
l -= offsetof(Object, data.payload);
- if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize, 0))
- return -EBADMSG;
+ r = decompress_blob(o->object.flags & OBJECT_COMPRESSION_MASK,
+ o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize, 0);
+ if (r < 0)
+ return r;
if (rsize == size &&
memcmp(f->compress_buffer, data, size) == 0) {
#else
return -EPROTONOSUPPORT;
#endif
-
} else if (le64toh(o->object.size) == osize &&
memcmp(o->data.payload, data, size) == 0) {
uint64_t hash, p;
uint64_t osize;
Object *o;
- int r;
- bool compressed = false;
+ int r, compression = 0;
const void *eq;
assert(f);
o->data.hash = htole64(hash);
-#ifdef HAVE_XZ
- if (f->compress &&
+#if defined(HAVE_XZ) || defined(HAVE_LZ4)
+ if (f->compress_xz &&
size >= COMPRESSION_SIZE_THRESHOLD) {
- uint64_t rsize;
+ size_t rsize;
- compressed = compress_blob(data, size, o->data.payload, &rsize);
+ compression = compress_blob(data, size, o->data.payload, &rsize);
- if (compressed) {
+ if (compression) {
o->object.size = htole64(offsetof(Object, data.payload) + rsize);
- o->object.flags |= OBJECT_COMPRESSED;
+ o->object.flags |= compression;
- log_debug("Compressed data object %"PRIu64" -> %"PRIu64, size, rsize);
+ log_debug("Compressed data object %"PRIu64" -> %zu using %s",
+ size, rsize, object_compressed_to_string(compression));
}
}
#endif
- if (!compressed && size > 0)
+ if (!compression && size > 0)
memcpy(o->data.payload, data, size);
r = journal_file_link_data(f, o, p, hash);
__sync_synchronize();
if (ftruncate(f->fd, f->last_stat.st_size) < 0)
- log_error("Failed to truncate file to its own size: %m");
+ log_error_errno(errno, "Failed to truncate file to its own size: %m");
}
static int entry_item_cmp(const void *_a, const void *_b) {
} ChainCacheItem;
static void chain_cache_put(
- Hashmap *h,
+ OrderedHashmap *h,
ChainCacheItem *ci,
uint64_t first,
uint64_t array,
if (array == first)
return;
- if (hashmap_size(h) >= CHAIN_CACHE_MAX)
- ci = hashmap_steal_first(h);
- else {
+ if (ordered_hashmap_size(h) >= CHAIN_CACHE_MAX) {
+ ci = ordered_hashmap_steal_first(h);
+ assert(ci);
+ } else {
ci = new(ChainCacheItem, 1);
if (!ci)
return;
ci->first = first;
- if (hashmap_put(h, &ci->first, ci) < 0) {
+ if (ordered_hashmap_put(h, &ci->first, ci) < 0) {
free(ci);
return;
}
a = first;
/* Try the chain cache first */
- ci = hashmap_get(f->chain_cache, &first);
+ ci = ordered_hashmap_get(f->chain_cache, &first);
if (ci && i > ci->total) {
a = ci->array;
i -= ci->total;
/* Start with the first array in the chain */
a = first;
- ci = hashmap_get(f->chain_cache, &first);
+ ci = ordered_hashmap_get(f->chain_cache, &first);
if (ci && n > ci->total) {
/* Ah, we have iterated this bisection array chain
* previously! Let's see if we can skip ahead in the
}
}
- if (k > n) {
+ if (k >= n) {
if (direction == DIRECTION_UP) {
i = n;
subtract_one = true;
p = le64toh(f->header->header_size);
while (p != 0) {
- r = journal_file_move_to_object(f, -1, p, &o);
+ r = journal_file_move_to_object(f, OBJECT_UNUSED, p, &o);
if (r < 0)
goto fail;
break;
}
- if (o->object.flags & OBJECT_COMPRESSED)
- printf("Flags: COMPRESSED\n");
+ if (o->object.flags & OBJECT_COMPRESSION_MASK)
+ printf("Flags: %s\n",
+ object_compressed_to_string(o->object.flags & OBJECT_COMPRESSION_MASK));
if (p == le64toh(f->header->tail_object_offset))
p = 0;
"Sequential Number ID: %s\n"
"State: %s\n"
"Compatible Flags:%s%s\n"
- "Incompatible Flags:%s%s\n"
+ "Incompatible Flags:%s%s%s\n"
"Header size: %"PRIu64"\n"
"Arena size: %"PRIu64"\n"
"Data Hash Table Size: %"PRIu64"\n"
f->header->state == STATE_ONLINE ? "ONLINE" :
f->header->state == STATE_ARCHIVED ? "ARCHIVED" : "UNKNOWN",
JOURNAL_HEADER_SEALED(f->header) ? " SEALED" : "",
- (le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) ? " ???" : "",
- JOURNAL_HEADER_COMPRESSED(f->header) ? " COMPRESSED" : "",
- (le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) ? " ???" : "",
+ (le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_ANY) ? " ???" : "",
+ JOURNAL_HEADER_COMPRESSED_XZ(f->header) ? " COMPRESSED-XZ" : "",
+ JOURNAL_HEADER_COMPRESSED_LZ4(f->header) ? " COMPRESSED-LZ4" : "",
+ (le32toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_ANY) ? " ???" : "",
le64toh(f->header->header_size),
le64toh(f->header->arena_size),
le64toh(f->header->data_hash_table_size) / sizeof(HashItem),
f->flags = flags;
f->prot = prot_from_flags(flags);
f->writable = (flags & O_ACCMODE) != O_RDONLY;
-#ifdef HAVE_XZ
- f->compress = compress;
+#if defined(HAVE_LZ4)
+ f->compress_lz4 = compress;
+#elif defined(HAVE_XZ)
+ f->compress_xz = compress;
#endif
#ifdef HAVE_GCRYPT
f->seal = seal;
goto fail;
}
- f->chain_cache = hashmap_new(uint64_hash_func, uint64_compare_func);
+ f->chain_cache = ordered_hashmap_new(&uint64_hash_ops);
if (!f->chain_cache) {
r = -ENOMEM;
goto fail;
}
if (f->last_stat.st_size == 0 && f->writable) {
-#ifdef HAVE_XATTR
uint64_t crtime;
/* Let's attach the creation time to the journal file,
* currently no usable API to query this, hence let's
* emulate this via extended attributes. If extended
* attributes are not supported we'll just skip this,
- * and rely solely on mtime/atime/ctime of the file.*/
+ * and rely solely on mtime/atime/ctime of the file. */
crtime = htole64((uint64_t) now(CLOCK_REALTIME));
fsetxattr(f->fd, "user.crtime_usec", &crtime, sizeof(crtime), XATTR_CREATE);
-#endif
#ifdef HAVE_GCRYPT
/* Try to load the FSPRG state, and if we can't, then
if ((uint64_t) t != l)
return -E2BIG;
- if (o->object.flags & OBJECT_COMPRESSED) {
-#ifdef HAVE_XZ
- uint64_t rsize;
+ if (o->object.flags & OBJECT_COMPRESSION_MASK) {
+#if defined(HAVE_XZ) || defined(HAVE_LZ4)
+ size_t rsize;
- if (!uncompress_blob(o->data.payload, l, &from->compress_buffer, &from->compress_buffer_size, &rsize, 0))
- return -EBADMSG;
+ r = decompress_blob(o->object.flags & OBJECT_COMPRESSION_MASK,
+ o->data.payload, l, &from->compress_buffer, &from->compress_buffer_size, &rsize, 0);
+ if (r < 0)
+ return r;
data = from->compress_buffer;
l = rsize;
~ianmdlvl / elogind.git / blobdiff