#include <fcntl.h>
#include <stddef.h>
+#include "btrfs-util.h"
#include "journal-def.h"
#include "journal-file.h"
#include "journal-authenticate.h"
#define COMPRESSION_SIZE_THRESHOLD (512ULL)
/* This is the minimum journal file size */
-#define JOURNAL_FILE_SIZE_MIN (64ULL*1024ULL) /* 64 KiB */
+#define JOURNAL_FILE_SIZE_MIN (4ULL*1024ULL*1024ULL) /* 4 MiB */
/* These are the lower and upper bounds if we deduce the max_use value
* from the file system size */
/* n_data was the first entry we added after the initial file format design */
#define HEADER_SIZE_MIN ALIGN64(offsetof(Header, n_data))
+/* How many entries to keep in the entry array chain cache at max */
+#define CHAIN_CACHE_MAX 20
+
+/* How much to increase the journal file size at once each time we allocate something new. */
+#define FILE_SIZE_INCREASE (8ULL*1024ULL*1024ULL) /* 8MB */
+
+/* Reread fstat() of the file for detecting deletions at least this often */
+#define LAST_STAT_REFRESH_USEC (5*USEC_PER_SEC)
+
+/* The mmap context to use for the header we pick as one above the last defined typed */
+#define CONTEXT_HEADER _OBJECT_TYPE_MAX
+
+static int journal_file_set_online(JournalFile *f) {
+ assert(f);
+
+ if (!f->writable)
+ return -EPERM;
+
+ if (!(f->fd >= 0 && f->header))
+ return -EINVAL;
+
+ if (mmap_cache_got_sigbus(f->mmap, f->fd))
+ return -EIO;
+
+ switch(f->header->state) {
+ case STATE_ONLINE:
+ return 0;
+
+ case STATE_OFFLINE:
+ f->header->state = STATE_ONLINE;
+ fsync(f->fd);
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+int journal_file_set_offline(JournalFile *f) {
+ assert(f);
+
+ if (!f->writable)
+ return -EPERM;
+
+ if (!(f->fd >= 0 && f->header))
+ return -EINVAL;
+
+ if (f->header->state != STATE_ONLINE)
+ return 0;
+
+ fsync(f->fd);
+
+ if (mmap_cache_got_sigbus(f->mmap, f->fd))
+ return -EIO;
+
+ f->header->state = STATE_OFFLINE;
+
+ if (mmap_cache_got_sigbus(f->mmap, f->fd))
+ return -EIO;
+
+ fsync(f->fd);
+
+ return 0;
+}
+
void journal_file_close(JournalFile *f) {
assert(f);
+#ifdef HAVE_GCRYPT
/* Write the final tag */
if (f->seal && f->writable)
journal_file_append_tag(f);
+#endif
+
+ journal_file_set_offline(f);
- /* Sync everything to disk, before we mark the file offline */
if (f->mmap && f->fd >= 0)
mmap_cache_close_fd(f->mmap, f->fd);
- if (f->writable && f->fd >= 0)
- fdatasync(f->fd);
-
- if (f->header) {
- /* Mark the file offline. Don't override the archived state if it already is set */
- if (f->writable && f->header->state == STATE_ONLINE)
- f->header->state = STATE_OFFLINE;
-
- munmap(f->header, PAGE_ALIGN(sizeof(Header)));
- }
-
- if (f->fd >= 0)
- close_nointr_nofail(f->fd);
+ if (f->fd >= 0 && f->defrag_on_close)
+ btrfs_defrag_fd(f->fd);
+ safe_close(f->fd);
free(f->path);
if (f->mmap)
mmap_cache_unref(f->mmap);
-#ifdef HAVE_XZ
+ ordered_hashmap_free_free(f->chain_cache);
+
+#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_refresh_header(JournalFile *f) {
- int r;
sd_id128_t boot_id;
+ int r;
assert(f);
f->header->boot_id = boot_id;
- f->header->state = STATE_ONLINE;
+ r = journal_file_set_online(f);
/* Sync the online state to disk */
- msync(f->header, PAGE_ALIGN(sizeof(Header)), MS_SYNC);
- fdatasync(f->fd);
+ fsync(f->fd);
- return 0;
+ return r;
}
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)
if (le64toh(f->header->tail_object_offset) > (le64toh(f->header->header_size) + le64toh(f->header->arena_size)))
return -ENODATA;
- if (!VALID64(f->header->data_hash_table_offset) ||
- !VALID64(f->header->field_hash_table_offset) ||
- !VALID64(f->header->tail_object_offset) ||
- !VALID64(f->header->entry_array_offset))
+ if (!VALID64(le64toh(f->header->data_hash_table_offset)) ||
+ !VALID64(le64toh(f->header->field_hash_table_offset)) ||
+ !VALID64(le64toh(f->header->tail_object_offset)) ||
+ !VALID64(le64toh(f->header->entry_array_offset)))
return -ENODATA;
if (f->writable) {
}
}
- 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_fstat(JournalFile *f) {
+ assert(f);
+ assert(f->fd >= 0);
+
+ if (fstat(f->fd, &f->last_stat) < 0)
+ return -errno;
- if (f->writable)
- f->seal = JOURNAL_HEADER_SEALED(f->header);
+ f->last_stat_usec = now(CLOCK_MONOTONIC);
+
+ /* Refuse appending to files that are already deleted */
+ if (f->last_stat.st_nlink <= 0)
+ return -EIDRM;
return 0;
}
* for sure, since we always call posix_fallocate()
* ourselves */
+ if (mmap_cache_got_sigbus(f->mmap, f->fd))
+ return -EIO;
+
old_size =
le64toh(f->header->header_size) +
le64toh(f->header->arena_size);
if (new_size < le64toh(f->header->header_size))
new_size = le64toh(f->header->header_size);
- if (new_size <= old_size)
- return 0;
+ if (new_size <= old_size) {
- if (f->metrics.max_size > 0 &&
- new_size > f->metrics.max_size)
+ /* We already pre-allocated enough space, but before
+ * we write to it, let's check with fstat() if the
+ * file got deleted, in order make sure we don't throw
+ * away the data immediately. Don't check fstat() for
+ * all writes though, but only once ever 10s. */
+
+ if (f->last_stat_usec + LAST_STAT_REFRESH_USEC > now(CLOCK_MONOTONIC))
+ return 0;
+
+ return journal_file_fstat(f);
+ }
+
+ /* Allocate more space. */
+
+ if (f->metrics.max_size > 0 && new_size > f->metrics.max_size)
return -E2BIG;
- if (new_size > f->metrics.min_size &&
- f->metrics.keep_free > 0) {
+ if (new_size > f->metrics.min_size && f->metrics.keep_free > 0) {
struct statvfs svfs;
if (fstatvfs(f->fd, &svfs) >= 0) {
}
}
+ /* Increase by larger blocks at once */
+ new_size = ((new_size+FILE_SIZE_INCREASE-1) / FILE_SIZE_INCREASE) * FILE_SIZE_INCREASE;
+ if (f->metrics.max_size > 0 && new_size > f->metrics.max_size)
+ new_size = f->metrics.max_size;
+
/* Note that the glibc fallocate() fallback is very
inefficient, hence we try to minimize the allocation area
as we can. */
if (r != 0)
return -r;
- mmap_cache_close_fd_range(f->mmap, f->fd, old_size);
-
- if (fstat(f->fd, &f->last_stat) < 0)
- return -errno;
-
f->header->arena_size = htole64(new_size - le64toh(f->header->header_size));
- return 0;
+ return journal_file_fstat(f);
+}
+
+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);
+ assert_cc(CONTEXT_HEADER < MMAP_CACHE_MAX_CONTEXTS);
+ return type > OBJECT_UNUSED && type < _OBJECT_TYPE_MAX ? type : 0;
}
-static int journal_file_move_to(JournalFile *f, int context, uint64_t offset, uint64_t size, void **ret) {
+static int journal_file_move_to(JournalFile *f, ObjectType type, bool keep_always, uint64_t offset, uint64_t size, void **ret) {
+ int r;
+
assert(f);
assert(ret);
+ if (size <= 0)
+ return -EINVAL;
+
/* Avoid SIGBUS on invalid accesses */
if (offset + size > (uint64_t) f->last_stat.st_size) {
/* Hmm, out of range? Let's refresh the fstat() data
* first, before we trust that check. */
- if (fstat(f->fd, &f->last_stat) < 0 ||
- offset + size > (uint64_t) f->last_stat.st_size)
+ r = journal_file_fstat(f);
+ if (r < 0)
+ return r;
+
+ if (offset + size > (uint64_t) f->last_stat.st_size)
return -EADDRNOTAVAIL;
}
- return mmap_cache_get(f->mmap, f->fd, f->prot, context, offset, size, 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) {
- static uint64_t table[] = {
+ static const uint64_t table[] = {
[OBJECT_DATA] = sizeof(DataObject),
[OBJECT_FIELD] = sizeof(FieldObject),
[OBJECT_ENTRY] = sizeof(EntryObject),
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;
uint64_t s;
- unsigned context;
assert(f);
assert(ret);
if (!VALID64(offset))
return -EFAULT;
- /* One context for each type, plus one catch-all for the rest */
- context = type > 0 && type < _OBJECT_TYPE_MAX ? type : 0;
-
- r = journal_file_move_to(f, context, 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, 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);
+ r = journal_file_set_online(f);
+ if (r < 0)
+ return r;
+
p = le64toh(f->header->tail_object_offset);
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 (r < 0)
return r;
- r = journal_file_move_to(f, type, p, size, &t);
+ r = journal_file_move_to(f, type, false, p, size, &t);
if (r < 0)
return r;
if (s < DEFAULT_DATA_HASH_TABLE_SIZE)
s = DEFAULT_DATA_HASH_TABLE_SIZE;
- log_info("Reserving %llu entries in hash table.", (unsigned long long) (s / sizeof(HashItem)));
+ log_debug("Reserving %"PRIu64" entries in hash table.", s / sizeof(HashItem));
r = journal_file_append_object(f,
OBJECT_DATA_HASH_TABLE,
if (r < 0)
return r;
- memset(o->hash_table.items, 0, s);
+ memzero(o->hash_table.items, s);
f->header->data_hash_table_offset = htole64(p + offsetof(Object, hash_table.items));
f->header->data_hash_table_size = htole64(s);
assert(f);
+ /* We use a fixed size hash table for the fields as this
+ * number should grow very slowly only */
+
s = DEFAULT_FIELD_HASH_TABLE_SIZE;
r = journal_file_append_object(f,
OBJECT_FIELD_HASH_TABLE,
if (r < 0)
return r;
- memset(o->hash_table.items, 0, s);
+ memzero(o->hash_table.items, s);
f->header->field_hash_table_offset = htole64(p + offsetof(Object, hash_table.items));
f->header->field_hash_table_size = htole64(s);
r = journal_file_move_to(f,
OBJECT_DATA_HASH_TABLE,
+ true,
p, s,
&t);
if (r < 0)
r = journal_file_move_to(f,
OBJECT_FIELD_HASH_TABLE,
+ true,
p, s,
&t);
if (r < 0)
return 0;
}
-static int journal_file_link_data(JournalFile *f, Object *o, uint64_t offset, uint64_t hash) {
- uint64_t p, h;
+static int journal_file_link_field(
+ JournalFile *f,
+ Object *o,
+ uint64_t offset,
+ uint64_t hash) {
+
+ uint64_t p, h, m;
int r;
assert(f);
assert(o);
assert(offset > 0);
- assert(o->object.type == OBJECT_DATA);
+
+ if (o->object.type != OBJECT_FIELD)
+ return -EINVAL;
+
+ m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem);
+ if (m <= 0)
+ return -EBADMSG;
/* This might alter the window we are looking at */
+ o->field.next_hash_offset = o->field.head_data_offset = 0;
+
+ h = hash % m;
+ p = le64toh(f->field_hash_table[h].tail_hash_offset);
+ if (p == 0)
+ f->field_hash_table[h].head_hash_offset = htole64(offset);
+ else {
+ r = journal_file_move_to_object(f, OBJECT_FIELD, p, &o);
+ if (r < 0)
+ return r;
+
+ o->field.next_hash_offset = htole64(offset);
+ }
+
+ f->field_hash_table[h].tail_hash_offset = htole64(offset);
+
+ if (JOURNAL_HEADER_CONTAINS(f->header, n_fields))
+ f->header->n_fields = htole64(le64toh(f->header->n_fields) + 1);
+
+ return 0;
+}
+
+static int journal_file_link_data(
+ JournalFile *f,
+ Object *o,
+ uint64_t offset,
+ uint64_t hash) {
+
+ uint64_t p, h, m;
+ int r;
+
+ assert(f);
+ assert(o);
+ assert(offset > 0);
+
+ if (o->object.type != OBJECT_DATA)
+ return -EINVAL;
+ m = le64toh(f->header->data_hash_table_size) / sizeof(HashItem);
+ if (m <= 0)
+ return -EBADMSG;
+
+ /* This might alter the window we are looking at */
o->data.next_hash_offset = o->data.next_field_offset = 0;
o->data.entry_offset = o->data.entry_array_offset = 0;
o->data.n_entries = 0;
- h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem));
+ h = hash % m;
p = le64toh(f->data_hash_table[h].tail_hash_offset);
- if (p == 0) {
+ if (p == 0)
/* Only entry in the hash table is easy */
f->data_hash_table[h].head_hash_offset = htole64(offset);
- } else {
+ else {
/* Move back to the previous data object, to patch in
* pointer */
return 0;
}
+int journal_file_find_field_object_with_hash(
+ JournalFile *f,
+ const void *field, uint64_t size, uint64_t hash,
+ Object **ret, uint64_t *offset) {
+
+ uint64_t p, osize, h, m;
+ int r;
+
+ assert(f);
+ assert(field && size > 0);
+
+ osize = offsetof(Object, field.payload) + size;
+
+ m = le64toh(f->header->field_hash_table_size) / sizeof(HashItem);
+
+ if (m <= 0)
+ return -EBADMSG;
+
+ h = hash % m;
+ p = le64toh(f->field_hash_table[h].head_hash_offset);
+
+ while (p > 0) {
+ Object *o;
+
+ r = journal_file_move_to_object(f, OBJECT_FIELD, p, &o);
+ if (r < 0)
+ return r;
+
+ if (le64toh(o->field.hash) == hash &&
+ le64toh(o->object.size) == osize &&
+ memcmp(o->field.payload, field, size) == 0) {
+
+ if (ret)
+ *ret = o;
+ if (offset)
+ *offset = p;
+
+ return 1;
+ }
+
+ p = le64toh(o->field.next_hash_offset);
+ }
+
+ return 0;
+}
+
+int journal_file_find_field_object(
+ JournalFile *f,
+ const void *field, uint64_t size,
+ Object **ret, uint64_t *offset) {
+
+ uint64_t hash;
+
+ assert(f);
+ assert(field && size > 0);
+
+ hash = hash64(field, size);
+
+ return journal_file_find_field_object_with_hash(f,
+ field, size, hash,
+ ret, offset);
+}
+
int journal_file_find_data_object_with_hash(
JournalFile *f,
const void *data, uint64_t size, uint64_t hash,
Object **ret, uint64_t *offset) {
- uint64_t p, osize, h;
+ uint64_t p, osize, h, m;
int r;
assert(f);
osize = offsetof(Object, data.payload) + size;
- if (f->header->data_hash_table_size == 0)
+ m = le64toh(f->header->data_hash_table_size) / sizeof(HashItem);
+ if (m <= 0)
return -EBADMSG;
- h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem));
+ h = hash % m;
p = le64toh(f->data_hash_table[h].head_hash_offset);
while (p > 0) {
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))
- 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) {
ret, offset);
}
+static int journal_file_append_field(
+ JournalFile *f,
+ const void *field, uint64_t size,
+ Object **ret, uint64_t *offset) {
+
+ uint64_t hash, p;
+ uint64_t osize;
+ Object *o;
+ int r;
+
+ assert(f);
+ assert(field && size > 0);
+
+ hash = hash64(field, size);
+
+ r = journal_file_find_field_object_with_hash(f, field, size, hash, &o, &p);
+ if (r < 0)
+ return r;
+ else if (r > 0) {
+
+ if (ret)
+ *ret = o;
+
+ if (offset)
+ *offset = p;
+
+ return 0;
+ }
+
+ osize = offsetof(Object, field.payload) + size;
+ r = journal_file_append_object(f, OBJECT_FIELD, osize, &o, &p);
+ if (r < 0)
+ return r;
+
+ o->field.hash = htole64(hash);
+ memcpy(o->field.payload, field, size);
+
+ r = journal_file_link_field(f, o, p, hash);
+ if (r < 0)
+ return r;
+
+ /* The linking might have altered the window, so let's
+ * refresh our pointer */
+ r = journal_file_move_to_object(f, OBJECT_FIELD, p, &o);
+ if (r < 0)
+ return r;
+
+#ifdef HAVE_GCRYPT
+ r = journal_file_hmac_put_object(f, OBJECT_FIELD, o, p);
+ if (r < 0)
+ return r;
+#endif
+
+ if (ret)
+ *ret = o;
+
+ if (offset)
+ *offset = p;
+
+ return 0;
+}
+
static int journal_file_append_data(
JournalFile *f,
const void *data, uint64_t size,
uint64_t hash, p;
uint64_t osize;
Object *o;
- int r;
- bool compressed = false;
+ int r, compression = 0;
+ const void *eq;
assert(f);
assert(data || size == 0);
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 %lu -> %lu", (unsigned long) size, (unsigned long) 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);
if (r < 0)
return r;
- r = journal_file_hmac_put_object(f, OBJECT_DATA, p);
- if (r < 0)
- return r;
-
/* The linking might have altered the window, so let's
* refresh our pointer */
r = journal_file_move_to_object(f, OBJECT_DATA, p, &o);
if (r < 0)
return r;
+ if (!data)
+ eq = NULL;
+ else
+ eq = memchr(data, '=', size);
+ if (eq && eq > data) {
+ Object *fo = NULL;
+ uint64_t fp;
+
+ /* Create field object ... */
+ r = journal_file_append_field(f, data, (uint8_t*) eq - (uint8_t*) data, &fo, &fp);
+ if (r < 0)
+ return r;
+
+ /* ... and link it in. */
+ o->data.next_field_offset = fo->field.head_data_offset;
+ fo->field.head_data_offset = le64toh(p);
+ }
+
+#ifdef HAVE_GCRYPT
+ r = journal_file_hmac_put_object(f, OBJECT_DATA, o, p);
+ if (r < 0)
+ return r;
+#endif
+
if (ret)
*ret = o;
uint64_t journal_file_entry_n_items(Object *o) {
assert(o);
- assert(o->object.type == OBJECT_ENTRY);
+
+ if (o->object.type != OBJECT_ENTRY)
+ return 0;
return (le64toh(o->object.size) - offsetof(Object, entry.items)) / sizeof(EntryItem);
}
uint64_t journal_file_entry_array_n_items(Object *o) {
assert(o);
- assert(o->object.type == OBJECT_ENTRY_ARRAY);
+
+ if (o->object.type != OBJECT_ENTRY_ARRAY)
+ return 0;
return (le64toh(o->object.size) - offsetof(Object, entry_array.items)) / sizeof(uint64_t);
}
uint64_t journal_file_hash_table_n_items(Object *o) {
assert(o);
- assert(o->object.type == OBJECT_DATA_HASH_TABLE ||
- o->object.type == OBJECT_FIELD_HASH_TABLE);
+
+ if (o->object.type != OBJECT_DATA_HASH_TABLE &&
+ o->object.type != OBJECT_FIELD_HASH_TABLE)
+ return 0;
return (le64toh(o->object.size) - offsetof(Object, hash_table.items)) / sizeof(HashItem);
}
if (r < 0)
return r;
- r = journal_file_hmac_put_object(f, OBJECT_ENTRY_ARRAY, q);
+#ifdef HAVE_GCRYPT
+ r = journal_file_hmac_put_object(f, OBJECT_ENTRY_ARRAY, o, q);
if (r < 0)
return r;
+#endif
o->entry_array.items[i] = htole64(p);
assert(f);
assert(o);
assert(offset > 0);
- assert(o->object.type == OBJECT_ENTRY);
+
+ if (o->object.type != OBJECT_ENTRY)
+ return -EINVAL;
__sync_synchronize();
if (r < 0)
return r;
- /* log_debug("=> %s seqnr=%lu n_entries=%lu", f->path, (unsigned long) o->entry.seqnum, (unsigned long) f->header->n_entries); */
+ /* log_debug("=> %s seqnr=%"PRIu64" n_entries=%"PRIu64, f->path, o->entry.seqnum, f->header->n_entries); */
if (f->header->head_entry_realtime == 0)
f->header->head_entry_realtime = o->entry.realtime;
o->entry.xor_hash = htole64(xor_hash);
o->entry.boot_id = f->header->boot_id;
- r = journal_file_hmac_put_object(f, OBJECT_ENTRY, np);
+#ifdef HAVE_GCRYPT
+ r = journal_file_hmac_put_object(f, OBJECT_ENTRY, o, np);
if (r < 0)
return r;
+#endif
r = journal_file_link_entry(f, o, np);
if (r < 0)
__sync_synchronize();
if (ftruncate(f->fd, f->last_stat.st_size) < 0)
- log_error("Failed to 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) {
+ const EntryItem *a = _a, *b = _b;
+
+ if (le64toh(a->object_offset) < le64toh(b->object_offset))
+ return -1;
+ if (le64toh(a->object_offset) > le64toh(b->object_offset))
+ return 1;
+ return 0;
}
int journal_file_append_entry(JournalFile *f, const dual_timestamp *ts, const struct iovec iovec[], unsigned n_iovec, uint64_t *seqnum, Object **ret, uint64_t *offset) {
assert(f);
assert(iovec || n_iovec == 0);
- if (!f->writable)
- return -EPERM;
-
if (!ts) {
dual_timestamp_get(&_ts);
ts = &_ts;
ts->monotonic < le64toh(f->header->tail_entry_monotonic))
return -EINVAL;
+#ifdef HAVE_GCRYPT
r = journal_file_maybe_append_tag(f, ts->realtime);
if (r < 0)
return r;
+#endif
/* alloca() can't take 0, hence let's allocate at least one */
- items = alloca(sizeof(EntryItem) * MAX(1, n_iovec));
+ items = alloca(sizeof(EntryItem) * MAX(1u, n_iovec));
for (i = 0; i < n_iovec; i++) {
uint64_t p;
items[i].hash = o->data.hash;
}
+ /* Order by the position on disk, in order to improve seek
+ * times for rotating media. */
+ qsort_safe(items, n_iovec, sizeof(EntryItem), entry_item_cmp);
+
r = journal_file_append_entry_internal(f, ts, xor_hash, items, n_iovec, seqnum, ret, offset);
+ /* If the memory mapping triggered a SIGBUS then we return an
+ * IO error and ignore the error code passed down to us, since
+ * it is very likely just an effect of a nullified replacement
+ * mapping page */
+
+ if (mmap_cache_got_sigbus(f->mmap, f->fd))
+ r = -EIO;
+
journal_file_post_change(f);
return r;
}
-static int generic_array_get(JournalFile *f,
- uint64_t first,
- uint64_t i,
- Object **ret, uint64_t *offset) {
+typedef struct ChainCacheItem {
+ uint64_t first; /* the array at the beginning of the chain */
+ uint64_t array; /* the cached array */
+ uint64_t begin; /* the first item in the cached array */
+ uint64_t total; /* the total number of items in all arrays before this one in the chain */
+ uint64_t last_index; /* the last index we looked at, to optimize locality when bisecting */
+} ChainCacheItem;
+
+static void chain_cache_put(
+ OrderedHashmap *h,
+ ChainCacheItem *ci,
+ uint64_t first,
+ uint64_t array,
+ uint64_t begin,
+ uint64_t total,
+ uint64_t last_index) {
+
+ if (!ci) {
+ /* If the chain item to cache for this chain is the
+ * first one it's not worth caching anything */
+ if (array == first)
+ return;
+
+ 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 (ordered_hashmap_put(h, &ci->first, ci) < 0) {
+ free(ci);
+ return;
+ }
+ } else
+ assert(ci->first == first);
+
+ ci->array = array;
+ ci->begin = begin;
+ ci->total = total;
+ ci->last_index = last_index;
+}
+
+static int generic_array_get(
+ JournalFile *f,
+ uint64_t first,
+ uint64_t i,
+ Object **ret, uint64_t *offset) {
Object *o;
- uint64_t p = 0, a;
+ uint64_t p = 0, a, t = 0;
int r;
+ ChainCacheItem *ci;
assert(f);
a = first;
+
+ /* Try the chain cache first */
+ ci = ordered_hashmap_get(f->chain_cache, &first);
+ if (ci && i > ci->total) {
+ a = ci->array;
+ i -= ci->total;
+ t = ci->total;
+ }
+
while (a > 0) {
- uint64_t n;
+ uint64_t k;
r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o);
if (r < 0)
return r;
- n = journal_file_entry_array_n_items(o);
- if (i < n) {
+ k = journal_file_entry_array_n_items(o);
+ if (i < k) {
p = le64toh(o->entry_array.items[i]);
- break;
+ goto found;
}
- i -= n;
+ i -= k;
+ t += k;
a = le64toh(o->entry_array.next_entry_array_offset);
}
- if (a <= 0 || p <= 0)
- return 0;
+ return 0;
+
+found:
+ /* Let's cache this item for the next invocation */
+ chain_cache_put(f->chain_cache, ci, first, a, le64toh(o->entry_array.items[0]), t, i);
r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o);
if (r < 0)
return 1;
}
-static int generic_array_get_plus_one(JournalFile *f,
- uint64_t extra,
- uint64_t first,
- uint64_t i,
- Object **ret, uint64_t *offset) {
+static int generic_array_get_plus_one(
+ JournalFile *f,
+ uint64_t extra,
+ uint64_t first,
+ uint64_t i,
+ Object **ret, uint64_t *offset) {
Object *o;
TEST_RIGHT
};
-static int generic_array_bisect(JournalFile *f,
- uint64_t first,
- uint64_t n,
- uint64_t needle,
- int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle),
- direction_t direction,
- Object **ret,
- uint64_t *offset,
- uint64_t *idx) {
-
- uint64_t a, p, t = 0, i = 0, last_p = 0;
+static int generic_array_bisect(
+ JournalFile *f,
+ uint64_t first,
+ uint64_t n,
+ uint64_t needle,
+ int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle),
+ direction_t direction,
+ Object **ret,
+ uint64_t *offset,
+ uint64_t *idx) {
+
+ uint64_t a, p, t = 0, i = 0, last_p = 0, last_index = (uint64_t) -1;
bool subtract_one = false;
Object *o, *array = NULL;
int r;
+ ChainCacheItem *ci;
assert(f);
assert(test_object);
+ /* Start with the first array in the chain */
a = 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
+ * chain, as far as the last time. But we can't jump
+ * backwards in the chain, so let's check that
+ * first. */
+
+ r = test_object(f, ci->begin, needle);
+ if (r < 0)
+ return r;
+
+ if (r == TEST_LEFT) {
+ /* OK, what we are looking for is right of the
+ * begin of this EntryArray, so let's jump
+ * straight to previously cached array in the
+ * chain */
+
+ a = ci->array;
+ n -= ci->total;
+ t = ci->total;
+ last_index = ci->last_index;
+ }
+ }
+
while (a > 0) {
uint64_t left, right, k, lp;
if (r == TEST_RIGHT) {
left = 0;
right -= 1;
+
+ if (last_index != (uint64_t) -1) {
+ assert(last_index <= right);
+
+ /* If we cached the last index we
+ * looked at, let's try to not to jump
+ * too wildly around and see if we can
+ * limit the range to look at early to
+ * the immediate neighbors of the last
+ * index we looked at. */
+
+ if (last_index > 0) {
+ uint64_t x = last_index - 1;
+
+ p = le64toh(array->entry_array.items[x]);
+ if (p <= 0)
+ return -EBADMSG;
+
+ r = test_object(f, p, needle);
+ if (r < 0)
+ return r;
+
+ if (r == TEST_FOUND)
+ r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT;
+
+ if (r == TEST_RIGHT)
+ right = x;
+ else
+ left = x + 1;
+ }
+
+ if (last_index < right) {
+ uint64_t y = last_index + 1;
+
+ p = le64toh(array->entry_array.items[y]);
+ if (p <= 0)
+ return -EBADMSG;
+
+ r = test_object(f, p, needle);
+ if (r < 0)
+ return r;
+
+ if (r == TEST_FOUND)
+ r = direction == DIRECTION_DOWN ? TEST_RIGHT : TEST_LEFT;
+
+ if (r == TEST_RIGHT)
+ right = y;
+ else
+ left = y + 1;
+ }
+ }
+
for (;;) {
if (left == right) {
if (direction == DIRECTION_UP)
}
assert(left < right);
-
i = (left + right) / 2;
+
p = le64toh(array->entry_array.items[i]);
if (p <= 0)
return -EBADMSG;
}
}
- if (k > n) {
+ if (k >= n) {
if (direction == DIRECTION_UP) {
i = n;
subtract_one = true;
n -= k;
t += k;
+ last_index = (uint64_t) -1;
a = le64toh(array->entry_array.next_entry_array_offset);
}
if (subtract_one && t == 0 && i == 0)
return 0;
+ /* Let's cache this item for the next invocation */
+ chain_cache_put(f->chain_cache, ci, first, a, le64toh(array->entry_array.items[0]), t, subtract_one ? (i > 0 ? i-1 : (uint64_t) -1) : i);
+
if (subtract_one && i == 0)
p = last_p;
else if (subtract_one)
return 1;
}
-static int generic_array_bisect_plus_one(JournalFile *f,
- uint64_t extra,
- uint64_t first,
- uint64_t n,
- uint64_t needle,
- int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle),
- direction_t direction,
- Object **ret,
- uint64_t *offset,
- uint64_t *idx) {
+static int generic_array_bisect_plus_one(
+ JournalFile *f,
+ uint64_t extra,
+ uint64_t first,
+ uint64_t n,
+ uint64_t needle,
+ int (*test_object)(JournalFile *f, uint64_t p, uint64_t needle),
+ direction_t direction,
+ Object **ret,
+ uint64_t *offset,
+ uint64_t *idx) {
int r;
bool step_back = false;
return 1;
}
-static int test_object_offset(JournalFile *f, uint64_t p, uint64_t needle) {
+_pure_ static int test_object_offset(JournalFile *f, uint64_t p, uint64_t needle) {
assert(f);
assert(p > 0);
return TEST_RIGHT;
}
-int journal_file_move_to_entry_by_offset(
- JournalFile *f,
- uint64_t p,
- direction_t direction,
- Object **ret,
- uint64_t *offset) {
-
- return generic_array_bisect(f,
- le64toh(f->header->entry_array_offset),
- le64toh(f->header->n_entries),
- p,
- test_object_offset,
- direction,
- ret, offset, NULL);
-}
-
-
static int test_object_seqnum(JournalFile *f, uint64_t p, uint64_t needle) {
Object *o;
int r;
return TEST_RIGHT;
}
+static inline int find_data_object_by_boot_id(
+ JournalFile *f,
+ sd_id128_t boot_id,
+ Object **o,
+ uint64_t *b) {
+ char t[sizeof("_BOOT_ID=")-1 + 32 + 1] = "_BOOT_ID=";
+
+ sd_id128_to_string(boot_id, t + 9);
+ return journal_file_find_data_object(f, t, sizeof(t) - 1, o, b);
+}
+
int journal_file_move_to_entry_by_monotonic(
JournalFile *f,
sd_id128_t boot_id,
Object **ret,
uint64_t *offset) {
- char t[9+32+1] = "_BOOT_ID=";
Object *o;
int r;
assert(f);
- sd_id128_to_string(boot_id, t + 9);
- r = journal_file_find_data_object(f, t, strlen(t), &o, NULL);
+ r = find_data_object_by_boot_id(f, boot_id, &o, NULL);
if (r < 0)
return r;
if (r == 0)
ret, offset, NULL);
}
+void journal_file_reset_location(JournalFile *f) {
+ f->location_type = LOCATION_HEAD;
+ f->current_offset = 0;
+ f->current_seqnum = 0;
+ f->current_realtime = 0;
+ f->current_monotonic = 0;
+ zero(f->current_boot_id);
+ f->current_xor_hash = 0;
+}
+
+void journal_file_save_location(JournalFile *f, direction_t direction, Object *o, uint64_t offset) {
+ f->last_direction = direction;
+ f->location_type = LOCATION_SEEK;
+ f->current_offset = offset;
+ f->current_seqnum = le64toh(o->entry.seqnum);
+ f->current_realtime = le64toh(o->entry.realtime);
+ f->current_monotonic = le64toh(o->entry.monotonic);
+ f->current_boot_id = o->entry.boot_id;
+ f->current_xor_hash = le64toh(o->entry.xor_hash);
+}
+
+int journal_file_compare_locations(JournalFile *af, JournalFile *bf) {
+ assert(af);
+ assert(bf);
+ assert(af->location_type == LOCATION_SEEK);
+ assert(bf->location_type == LOCATION_SEEK);
+
+ /* If contents and timestamps match, these entries are
+ * identical, even if the seqnum does not match */
+ if (sd_id128_equal(af->current_boot_id, bf->current_boot_id) &&
+ af->current_monotonic == bf->current_monotonic &&
+ af->current_realtime == bf->current_realtime &&
+ af->current_xor_hash == bf->current_xor_hash)
+ return 0;
+
+ if (sd_id128_equal(af->header->seqnum_id, bf->header->seqnum_id)) {
+
+ /* If this is from the same seqnum source, compare
+ * seqnums */
+ if (af->current_seqnum < bf->current_seqnum)
+ return -1;
+ if (af->current_seqnum > bf->current_seqnum)
+ return 1;
+
+ /* Wow! This is weird, different data but the same
+ * seqnums? Something is borked, but let's make the
+ * best of it and compare by time. */
+ }
+
+ if (sd_id128_equal(af->current_boot_id, bf->current_boot_id)) {
+
+ /* If the boot id matches, compare monotonic time */
+ if (af->current_monotonic < bf->current_monotonic)
+ return -1;
+ if (af->current_monotonic > bf->current_monotonic)
+ return 1;
+ }
+
+ /* Otherwise, compare UTC time */
+ if (af->current_realtime < bf->current_realtime)
+ return -1;
+ if (af->current_realtime > bf->current_realtime)
+ return 1;
+
+ /* Finally, compare by contents */
+ if (af->current_xor_hash < bf->current_xor_hash)
+ return -1;
+ if (af->current_xor_hash > bf->current_xor_hash)
+ return 1;
+
+ return 0;
+}
+
int journal_file_next_entry(
JournalFile *f,
- Object *o, uint64_t p,
+ uint64_t p,
direction_t direction,
Object **ret, uint64_t *offset) {
- uint64_t i, n;
+ uint64_t i, n, ofs;
int r;
assert(f);
- assert(p > 0 || !o);
n = le64toh(f->header->n_entries);
if (n <= 0)
return 0;
- if (!o)
+ if (p == 0)
i = direction == DIRECTION_DOWN ? 0 : n - 1;
else {
- if (o->object.type != OBJECT_ENTRY)
- return -EINVAL;
-
r = generic_array_bisect(f,
le64toh(f->header->entry_array_offset),
le64toh(f->header->n_entries),
}
/* And jump to it */
- return generic_array_get(f,
- le64toh(f->header->entry_array_offset),
- i,
- ret, offset);
-}
-
-int journal_file_skip_entry(
- JournalFile *f,
- Object *o, uint64_t p,
- int64_t skip,
- Object **ret, uint64_t *offset) {
-
- uint64_t i, n;
- int r;
-
- assert(f);
- assert(o);
- assert(p > 0);
-
- if (o->object.type != OBJECT_ENTRY)
- return -EINVAL;
-
- r = generic_array_bisect(f,
- le64toh(f->header->entry_array_offset),
- le64toh(f->header->n_entries),
- p,
- test_object_offset,
- DIRECTION_DOWN,
- NULL, NULL,
- &i);
+ r = generic_array_get(f,
+ le64toh(f->header->entry_array_offset),
+ i,
+ ret, &ofs);
if (r <= 0)
return r;
- /* Calculate new index */
- if (skip < 0) {
- if ((uint64_t) -skip >= i)
- i = 0;
- else
- i = i - (uint64_t) -skip;
- } else
- i += (uint64_t) skip;
-
- n = le64toh(f->header->n_entries);
- if (n <= 0)
+ if (p > 0 &&
+ (direction == DIRECTION_DOWN ? ofs <= p : ofs >= p)) {
+ log_debug("%s: entry array corrupted at entry %"PRIu64,
+ f->path, i);
return -EBADMSG;
+ }
- if (i >= n)
- i = n-1;
+ if (offset)
+ *offset = ofs;
- return generic_array_get(f,
- le64toh(f->header->entry_array_offset),
- i,
- ret, offset);
+ return 1;
}
int journal_file_next_entry_for_data(
direction_t direction,
Object **ret, uint64_t *offset) {
- char t[9+32+1] = "_BOOT_ID=";
Object *o, *d;
int r;
uint64_t b, z;
assert(f);
/* First, seek by time */
- sd_id128_to_string(boot_id, t + 9);
- r = journal_file_find_data_object(f, t, strlen(t), &o, &b);
+ r = find_data_object_by_boot_id(f, boot_id, &o, &b);
if (r < 0)
return r;
if (r == 0)
z = q;
}
-
- return 0;
}
int journal_file_move_to_entry_by_seqnum_for_data(
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;
printf("Type: OBJECT_DATA\n");
break;
+ case OBJECT_FIELD:
+ printf("Type: OBJECT_FIELD\n");
+ break;
+
case OBJECT_ENTRY:
- printf("Type: OBJECT_ENTRY seqnum=%llu monotonic=%llu realtime=%llu\n",
- (unsigned long long) le64toh(o->entry.seqnum),
- (unsigned long long) le64toh(o->entry.monotonic),
- (unsigned long long) le64toh(o->entry.realtime));
+ printf("Type: OBJECT_ENTRY seqnum=%"PRIu64" monotonic=%"PRIu64" realtime=%"PRIu64"\n",
+ le64toh(o->entry.seqnum),
+ le64toh(o->entry.monotonic),
+ le64toh(o->entry.realtime));
break;
case OBJECT_FIELD_HASH_TABLE:
break;
case OBJECT_TAG:
- printf("Type: OBJECT_TAG seqnum=%llu epoch=%llu\n",
- (unsigned long long) le64toh(o->tag.seqnum),
- (unsigned long long) le64toh(o->tag.epoch));
+ printf("Type: OBJECT_TAG seqnum=%"PRIu64" epoch=%"PRIu64"\n",
+ le64toh(o->tag.seqnum),
+ le64toh(o->tag.epoch));
+ break;
+
+ default:
+ printf("Type: unknown (%u)\n", o->object.type);
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;
log_error("File corrupt");
}
+static const char* format_timestamp_safe(char *buf, size_t l, usec_t t) {
+ const char *x;
+
+ x = format_timestamp(buf, l, t);
+ if (x)
+ return x;
+ return " --- ";
+}
+
void journal_file_print_header(JournalFile *f) {
- char a[33], b[33], c[33];
- char x[FORMAT_TIMESTAMP_MAX], y[FORMAT_TIMESTAMP_MAX];
+ char a[33], b[33], c[33], d[33];
+ char x[FORMAT_TIMESTAMP_MAX], y[FORMAT_TIMESTAMP_MAX], z[FORMAT_TIMESTAMP_MAX];
+ struct stat st;
+ char bytes[FORMAT_BYTES_MAX];
assert(f);
"Sequential Number ID: %s\n"
"State: %s\n"
"Compatible Flags:%s%s\n"
- "Incompatible Flags:%s%s\n"
- "Header size: %llu\n"
- "Arena size: %llu\n"
- "Data Hash Table Size: %llu\n"
- "Field Hash Table Size: %llu\n"
+ "Incompatible Flags:%s%s%s\n"
+ "Header size: %"PRIu64"\n"
+ "Arena size: %"PRIu64"\n"
+ "Data Hash Table Size: %"PRIu64"\n"
+ "Field Hash Table Size: %"PRIu64"\n"
"Rotate Suggested: %s\n"
- "Head Sequential Number: %llu\n"
- "Tail Sequential Number: %llu\n"
+ "Head Sequential Number: %"PRIu64"\n"
+ "Tail Sequential Number: %"PRIu64"\n"
"Head Realtime Timestamp: %s\n"
"Tail Realtime Timestamp: %s\n"
- "Objects: %llu\n"
- "Entry Objects: %llu\n",
+ "Tail Monotonic Timestamp: %s\n"
+ "Objects: %"PRIu64"\n"
+ "Entry Objects: %"PRIu64"\n",
f->path,
sd_id128_to_string(f->header->file_id, a),
sd_id128_to_string(f->header->machine_id, b),
sd_id128_to_string(f->header->boot_id, c),
- sd_id128_to_string(f->header->seqnum_id, c),
+ sd_id128_to_string(f->header->seqnum_id, d),
f->header->state == STATE_OFFLINE ? "OFFLINE" :
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) ? " ???" : "",
- (unsigned long long) le64toh(f->header->header_size),
- (unsigned long long) le64toh(f->header->arena_size),
- (unsigned long long) le64toh(f->header->data_hash_table_size) / sizeof(HashItem),
- (unsigned long long) le64toh(f->header->field_hash_table_size) / sizeof(HashItem),
- yes_no(journal_file_rotate_suggested(f)),
- (unsigned long long) le64toh(f->header->head_entry_seqnum),
- (unsigned long long) le64toh(f->header->tail_entry_seqnum),
- format_timestamp(x, sizeof(x), le64toh(f->header->head_entry_realtime)),
- format_timestamp(y, sizeof(y), le64toh(f->header->tail_entry_realtime)),
- (unsigned long long) le64toh(f->header->n_objects),
- (unsigned long long) le64toh(f->header->n_entries));
+ (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),
+ le64toh(f->header->field_hash_table_size) / sizeof(HashItem),
+ yes_no(journal_file_rotate_suggested(f, 0)),
+ le64toh(f->header->head_entry_seqnum),
+ le64toh(f->header->tail_entry_seqnum),
+ format_timestamp_safe(x, sizeof(x), le64toh(f->header->head_entry_realtime)),
+ format_timestamp_safe(y, sizeof(y), le64toh(f->header->tail_entry_realtime)),
+ format_timespan(z, sizeof(z), le64toh(f->header->tail_entry_monotonic), USEC_PER_MSEC),
+ le64toh(f->header->n_objects),
+ le64toh(f->header->n_entries));
if (JOURNAL_HEADER_CONTAINS(f->header, n_data))
- printf("Data Objects: %llu\n"
+ printf("Data Objects: %"PRIu64"\n"
"Data Hash Table Fill: %.1f%%\n",
- (unsigned long long) le64toh(f->header->n_data),
+ le64toh(f->header->n_data),
100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem))));
if (JOURNAL_HEADER_CONTAINS(f->header, n_fields))
- printf("Field Objects: %llu\n"
+ printf("Field Objects: %"PRIu64"\n"
"Field Hash Table Fill: %.1f%%\n",
- (unsigned long long) le64toh(f->header->n_fields),
+ le64toh(f->header->n_fields),
100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))));
if (JOURNAL_HEADER_CONTAINS(f->header, n_tags))
- printf("Tag Objects: %llu\n",
- (unsigned long long) le64toh(f->header->n_tags));
+ printf("Tag Objects: %"PRIu64"\n",
+ le64toh(f->header->n_tags));
if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays))
- printf("Entry Array Objects: %llu\n",
- (unsigned long long) le64toh(f->header->n_entry_arrays));
+ printf("Entry Array Objects: %"PRIu64"\n",
+ le64toh(f->header->n_entry_arrays));
+
+ if (fstat(f->fd, &st) >= 0)
+ printf("Disk usage: %s\n", format_bytes(bytes, sizeof(bytes), (off_t) st.st_blocks * 512ULL));
}
int journal_file_open(
JournalFile *template,
JournalFile **ret) {
+ bool newly_created = false;
JournalFile *f;
+ void *h;
int r;
- bool newly_created = false;
assert(fname);
+ assert(ret);
if ((flags & O_ACCMODE) != O_RDONLY &&
(flags & O_ACCMODE) != O_RDWR)
f->flags = flags;
f->prot = prot_from_flags(flags);
f->writable = (flags & O_ACCMODE) != O_RDONLY;
- 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;
+#endif
if (mmap_cache)
f->mmap = mmap_cache_ref(mmap_cache);
goto fail;
}
+ f->chain_cache = ordered_hashmap_new(&uint64_hash_ops);
+ if (!f->chain_cache) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
f->fd = open(f->path, f->flags|O_CLOEXEC, f->mode);
if (f->fd < 0) {
r = -errno;
goto fail;
}
- if (fstat(f->fd, &f->last_stat) < 0) {
- r = -errno;
+ r = journal_file_fstat(f);
+ if (r < 0)
goto fail;
- }
if (f->last_stat.st_size == 0 && f->writable) {
- newly_created = true;
+ /* Let's attach the creation time to the journal file,
+ * so that the vacuuming code knows the age of this
+ * file even if the file might end up corrupted one
+ * day... Ideally we'd just use the creation time many
+ * file systems maintain for each file, but there is
+ * 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. */
+
+ fd_setcrtime(f->fd, now(CLOCK_REALTIME));
+#ifdef HAVE_GCRYPT
/* Try to load the FSPRG state, and if we can't, then
* just don't do sealing */
- r = journal_file_fss_load(f);
- if (r < 0)
- f->seal = false;
+ if (f->seal) {
+ r = journal_file_fss_load(f);
+ if (r < 0)
+ f->seal = false;
+ }
+#endif
r = journal_file_init_header(f, template);
if (r < 0)
goto fail;
- if (fstat(f->fd, &f->last_stat) < 0) {
- r = -errno;
+ r = journal_file_fstat(f);
+ if (r < 0)
goto fail;
- }
+
+ newly_created = true;
}
if (f->last_stat.st_size < (off_t) HEADER_SIZE_MIN) {
goto fail;
}
- f->header = mmap(NULL, PAGE_ALIGN(sizeof(Header)), prot_from_flags(flags), MAP_SHARED, f->fd, 0);
- if (f->header == MAP_FAILED) {
- f->header = NULL;
+ r = mmap_cache_get(f->mmap, f->fd, f->prot, CONTEXT_HEADER, true, 0, PAGE_ALIGN(sizeof(Header)), &f->last_stat, &h);
+ if (r < 0) {
r = -errno;
goto fail;
}
+ f->header = h;
+
if (!newly_created) {
r = journal_file_verify_header(f);
if (r < 0)
goto fail;
}
+#ifdef HAVE_GCRYPT
if (!newly_created && f->writable) {
r = journal_file_fss_load(f);
if (r < 0)
goto fail;
}
+#endif
if (f->writable) {
if (metrics) {
goto fail;
}
+#ifdef HAVE_GCRYPT
r = journal_file_hmac_setup(f);
if (r < 0)
goto fail;
+#endif
if (newly_created) {
r = journal_file_setup_field_hash_table(f);
if (r < 0)
goto fail;
+#ifdef HAVE_GCRYPT
r = journal_file_append_first_tag(f);
if (r < 0)
goto fail;
+#endif
}
r = journal_file_map_field_hash_table(f);
if (r < 0)
goto fail;
- if (ret)
- *ret = f;
+ if (mmap_cache_got_sigbus(f->mmap, f->fd)) {
+ r = -EIO;
+ goto fail;
+ }
+ *ret = f;
return 0;
fail:
+ if (f->fd >= 0 && mmap_cache_got_sigbus(f->mmap, f->fd))
+ r = -EIO;
+
journal_file_close(f);
return r;
}
int journal_file_rotate(JournalFile **f, bool compress, bool seal) {
- char *p;
+ _cleanup_free_ char *p = NULL;
size_t l;
JournalFile *old_file, *new_file = NULL;
int r;
return -EINVAL;
l = strlen(old_file->path);
-
- p = new(char, l + 1 + 32 + 1 + 16 + 1 + 16 + 1);
- if (!p)
+ r = asprintf(&p, "%.*s@" SD_ID128_FORMAT_STR "-%016"PRIx64"-%016"PRIx64".journal",
+ (int) l - 8, old_file->path,
+ SD_ID128_FORMAT_VAL(old_file->header->seqnum_id),
+ le64toh((*f)->header->head_entry_seqnum),
+ le64toh((*f)->header->head_entry_realtime));
+ if (r < 0)
return -ENOMEM;
- memcpy(p, old_file->path, l - 8);
- p[l-8] = '@';
- sd_id128_to_string(old_file->header->seqnum_id, p + l - 8 + 1);
- snprintf(p + l - 8 + 1 + 32, 1 + 16 + 1 + 16 + 8 + 1,
- "-%016llx-%016llx.journal",
- (unsigned long long) le64toh((*f)->header->tail_entry_seqnum),
- (unsigned long long) le64toh((*f)->header->tail_entry_realtime));
-
+ /* Try to rename the file to the archived version. If the file
+ * already was deleted, we'll get ENOENT, let's ignore that
+ * case. */
r = rename(old_file->path, p);
- free(p);
-
- if (r < 0)
+ if (r < 0 && errno != ENOENT)
return -errno;
old_file->header->state = STATE_ARCHIVED;
+ /* Currently, btrfs is not very good with out write patterns
+ * and fragments heavily. Let's defrag our journal files when
+ * we archive them */
+ old_file->defrag_on_close = true;
+
r = journal_file_open(old_file->path, old_file->flags, old_file->mode, compress, seal, NULL, old_file->mmap, old_file, &new_file);
journal_file_close(old_file);
int r;
size_t l;
- char *p;
+ _cleanup_free_ char *p = NULL;
r = journal_file_open(fname, flags, mode, compress, seal,
metrics, mmap_cache, template, ret);
r != -EHOSTDOWN && /* other machine */
r != -EPROTONOSUPPORT && /* incompatible feature */
r != -EBUSY && /* unclean shutdown */
- r != -ESHUTDOWN /* already archived */)
+ r != -ESHUTDOWN && /* already archived */
+ r != -EIO && /* IO error, including SIGBUS on mmap */
+ r != -EIDRM /* File has been deleted */)
return r;
if ((flags & O_ACCMODE) == O_RDONLY)
/* The file is corrupted. Rotate it away and try it again (but only once) */
l = strlen(fname);
- if (asprintf(&p, "%.*s@%016llx-%016llx.journal~",
- (int) (l-8), fname,
+ if (asprintf(&p, "%.*s@%016llx-%016" PRIx64 ".journal~",
+ (int) l - 8, fname,
(unsigned long long) now(CLOCK_REALTIME),
- random_ull()) < 0)
+ random_u64()) < 0)
return -ENOMEM;
r = rename(fname, p);
- free(p);
if (r < 0)
return -errno;
+ /* btrfs doesn't cope well with our write pattern and
+ * fragments heavily. Let's defrag all files we rotate */
+ (void) btrfs_defrag(p);
+
log_warning("File %s corrupted or uncleanly shut down, renaming and replacing.", fname);
return journal_file_open(fname, flags, mode, compress, seal,
metrics, mmap_cache, template, ret);
}
-
int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset) {
uint64_t i, n;
uint64_t q, xor_hash = 0;
ts.monotonic = le64toh(o->entry.monotonic);
ts.realtime = le64toh(o->entry.realtime);
- if (to->tail_entry_monotonic_valid &&
- ts.monotonic < le64toh(to->header->tail_entry_monotonic))
- return -EINVAL;
-
n = journal_file_entry_n_items(o);
- items = alloca(sizeof(EntryItem) * n);
+ /* alloca() can't take 0, hence let's allocate at least one */
+ items = alloca(sizeof(EntryItem) * MAX(1u, n));
for (i = 0; i < n; i++) {
uint64_t l, h;
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))
- 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;
return r;
}
- return journal_file_append_entry_internal(to, &ts, xor_hash, items, n, seqnum, ret, offset);
+ r = journal_file_append_entry_internal(to, &ts, xor_hash, items, n, seqnum, ret, offset);
+
+ if (mmap_cache_got_sigbus(to->mmap, to->fd))
+ return -EIO;
+
+ return r;
}
void journal_default_metrics(JournalMetrics *m, int fd) {
if (m->keep_free == (uint64_t) -1) {
if (fs_size > 0) {
- m->keep_free = PAGE_ALIGN(fs_size / 20); /* 5% of file system size */
+ m->keep_free = PAGE_ALIGN(fs_size * 3 / 20); /* 15% of file system size */
if (m->keep_free > DEFAULT_KEEP_FREE_UPPER)
m->keep_free = DEFAULT_KEEP_FREE_UPPER;
m->keep_free = DEFAULT_KEEP_FREE;
}
- log_info("Fixed max_use=%s max_size=%s min_size=%s keep_free=%s",
- format_bytes(a, sizeof(a), m->max_use),
- format_bytes(b, sizeof(b), m->max_size),
- format_bytes(c, sizeof(c), m->min_size),
- format_bytes(d, sizeof(d), m->keep_free));
+ log_debug("Fixed max_use=%s max_size=%s min_size=%s keep_free=%s",
+ format_bytes(a, sizeof(a), m->max_use),
+ format_bytes(b, sizeof(b), m->max_size),
+ format_bytes(c, sizeof(c), m->min_size),
+ format_bytes(d, sizeof(d), m->keep_free));
}
int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to) {
}
int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot_id, usec_t *from, usec_t *to) {
- char t[9+32+1] = "_BOOT_ID=";
Object *o;
uint64_t p;
int r;
assert(f);
assert(from || to);
- sd_id128_to_string(boot_id, t + 9);
-
- r = journal_file_find_data_object(f, t, strlen(t), &o, &p);
+ r = find_data_object_by_boot_id(f, boot_id, &o, &p);
if (r <= 0)
return r;
return 1;
}
-bool journal_file_rotate_suggested(JournalFile *f) {
+bool journal_file_rotate_suggested(JournalFile *f, usec_t max_file_usec) {
assert(f);
/* If we gained new header fields we gained new features,
if (JOURNAL_HEADER_CONTAINS(f->header, n_data))
if (le64toh(f->header->n_data) * 4ULL > (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)) * 3ULL) {
- log_debug("Data hash table of %s has a fill level at %.1f (%llu of %llu items, %llu file size, %llu bytes per hash table item), suggesting rotation.",
+ log_debug("Data hash table of %s has a fill level at %.1f (%"PRIu64" of %"PRIu64" items, %llu file size, %"PRIu64" bytes per hash table item), suggesting rotation.",
f->path,
100.0 * (double) le64toh(f->header->n_data) / ((double) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem))),
- (unsigned long long) le64toh(f->header->n_data),
- (unsigned long long) (le64toh(f->header->data_hash_table_size) / sizeof(HashItem)),
- (unsigned long long) (f->last_stat.st_size),
- (unsigned long long) (f->last_stat.st_size / le64toh(f->header->n_data)));
+ le64toh(f->header->n_data),
+ le64toh(f->header->data_hash_table_size) / sizeof(HashItem),
+ (unsigned long long) f->last_stat.st_size,
+ f->last_stat.st_size / le64toh(f->header->n_data));
return true;
}
if (JOURNAL_HEADER_CONTAINS(f->header, n_fields))
if (le64toh(f->header->n_fields) * 4ULL > (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)) * 3ULL) {
- log_debug("Field hash table of %s has a fill level at %.1f (%llu of %llu items), suggesting rotation.",
+ log_debug("Field hash table of %s has a fill level at %.1f (%"PRIu64" of %"PRIu64" items), suggesting rotation.",
f->path,
100.0 * (double) le64toh(f->header->n_fields) / ((double) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem))),
- (unsigned long long) le64toh(f->header->n_fields),
- (unsigned long long) (le64toh(f->header->field_hash_table_size) / sizeof(HashItem)));
+ le64toh(f->header->n_fields),
+ le64toh(f->header->field_hash_table_size) / sizeof(HashItem));
return true;
}
+ /* Are the data objects properly indexed by field objects? */
+ if (JOURNAL_HEADER_CONTAINS(f->header, n_data) &&
+ JOURNAL_HEADER_CONTAINS(f->header, n_fields) &&
+ le64toh(f->header->n_data) > 0 &&
+ le64toh(f->header->n_fields) == 0)
+ return true;
+
+ if (max_file_usec > 0) {
+ usec_t t, h;
+
+ h = le64toh(f->header->head_entry_realtime);
+ t = now(CLOCK_REALTIME);
+
+ if (h > 0 && t > h + max_file_usec)
+ return true;
+ }
+
return false;
}
~ianmdlvl / elogind.git / blobdiff