-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
#include "lookup3.h"
#include "parse-util.h"
#include "random-util.h"
+#include "sd-event.h"
#include "string-util.h"
#include "xattr-util.h"
#define COMPRESSION_SIZE_THRESHOLD (512ULL)
/* This is the minimum journal file size */
-#define JOURNAL_FILE_SIZE_MIN (4ULL*1024ULL*1024ULL) /* 4 MiB */
+#define JOURNAL_FILE_SIZE_MIN (512ULL*1024ULL) /* 512 KiB */
/* These are the lower and upper bounds if we deduce the max_use value
* from the file system size */
if (mmap_cache_got_sigbus(f->mmap, f->fd))
return -EIO;
- switch(f->header->state) {
+ switch (f->header->state) {
case STATE_ONLINE:
return 0;
case STATE_OFFLINE:
f->header->state = STATE_ONLINE;
- fsync(f->fd);
+ (void) fsync(f->fd);
return 0;
default:
if (f->header->state != STATE_ONLINE)
return 0;
- fsync(f->fd);
+ (void) fsync(f->fd);
if (mmap_cache_got_sigbus(f->mmap, f->fd))
return -EIO;
if (mmap_cache_got_sigbus(f->mmap, f->fd))
return -EIO;
- fsync(f->fd);
+ (void) fsync(f->fd);
return 0;
}
journal_file_append_tag(f);
#endif
+ if (f->post_change_timer) {
+ int enabled;
+
+ if (sd_event_source_get_enabled(f->post_change_timer, &enabled) >= 0)
+ if (enabled == SD_EVENT_ONESHOT)
+ journal_file_post_change(f);
+
+ (void) sd_event_source_set_enabled(f->post_change_timer, SD_EVENT_OFF);
+ sd_event_source_unref(f->post_change_timer);
+ }
+
journal_file_set_offline(f);
if (f->mmap && f->fd >= 0)
safe_close(f->fd);
free(f->path);
- if (f->mmap)
- mmap_cache_unref(f->mmap);
+ mmap_cache_unref(f->mmap);
ordered_hashmap_free_free(f->chain_cache);
int r;
assert(f);
+ assert(f->header);
r = sd_id128_get_machine(&f->header->machine_id);
if (r < 0)
r = journal_file_set_online(f);
/* Sync the online state to disk */
- fsync(f->fd);
+ (void) fsync(f->fd);
return r;
}
uint32_t flags;
assert(f);
+ assert(f->header);
if (memcmp(f->header->signature, HEADER_SIGNATURE, 8))
return -EBADMSG;
int r;
assert(f);
+ assert(f->header);
/* We assume that this file is not sparse, and we know that
* for sure, since we always call posix_fallocate()
uint64_t r;
assert(f);
+ assert(f->header);
r = le64toh(f->header->tail_entry_seqnum) + 1;
void *t;
assert(f);
+ assert(f->header);
assert(type > OBJECT_UNUSED && type < _OBJECT_TYPE_MAX);
assert(size >= sizeof(ObjectHeader));
assert(offset);
int r;
assert(f);
+ assert(f->header);
/* We estimate that we need 1 hash table entry per 768 bytes
of journal file and we want to make sure we never get
int r;
assert(f);
+ assert(f->header);
/* We use a fixed size hash table for the fields as this
* number should grow very slowly only */
int r;
assert(f);
+ assert(f->header);
if (f->data_hash_table)
return 0;
int r;
assert(f);
+ assert(f->header);
if (f->field_hash_table)
return 0;
int r;
assert(f);
+ assert(f->header);
+ assert(f->field_hash_table);
assert(o);
assert(offset > 0);
int r;
assert(f);
+ assert(f->header);
+ assert(f->data_hash_table);
assert(o);
assert(offset > 0);
int r;
assert(f);
+ assert(f->header);
assert(field && size > 0);
/* If the field hash table is empty, we can't find anything */
int r;
assert(f);
+ assert(f->header);
assert(data || size == 0);
/* If there's no data hash table, then there's no entry. */
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);
}
#endif
- if (compression == 0 && size > 0)
- memcpy(o->data.payload, data, size);
+ if (compression == 0)
+ memcpy_safe(o->data.payload, data, size);
r = journal_file_link_data(f, o, p, hash);
if (r < 0)
Object *o;
assert(f);
+ assert(f->header);
assert(first);
assert(idx);
assert(p > 0);
int r;
assert(f);
+ assert(f->header);
assert(o);
assert(offset > 0);
int r;
assert(f);
+ assert(f->header);
assert(items || n_items == 0);
assert(ts);
return r;
o->entry.seqnum = htole64(journal_file_entry_seqnum(f, seqnum));
- memcpy(o->entry.items, items, n_items * sizeof(EntryItem));
+ memcpy_safe(o->entry.items, items, n_items * sizeof(EntryItem));
o->entry.realtime = htole64(ts->realtime);
o->entry.monotonic = htole64(ts->monotonic);
o->entry.xor_hash = htole64(xor_hash);
__sync_synchronize();
if (ftruncate(f->fd, f->last_stat.st_size) < 0)
- log_error_errno(errno, "Failed to truncate file to its own size: %m");
+ log_debug_errno(errno, "Failed to truncate file to its own size: %m");
+}
+
+static int post_change_thunk(sd_event_source *timer, uint64_t usec, void *userdata) {
+ assert(userdata);
+
+ journal_file_post_change(userdata);
+
+ return 1;
+}
+
+static void schedule_post_change(JournalFile *f) {
+ sd_event_source *timer;
+ int enabled, r;
+ uint64_t now;
+
+ assert(f);
+ assert(f->post_change_timer);
+
+ timer = f->post_change_timer;
+
+ r = sd_event_source_get_enabled(timer, &enabled);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to get ftruncate timer state: %m");
+ goto fail;
+ }
+
+ if (enabled == SD_EVENT_ONESHOT)
+ return;
+
+ r = sd_event_now(sd_event_source_get_event(timer), CLOCK_MONOTONIC, &now);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to get clock's now for scheduling ftruncate: %m");
+ goto fail;
+ }
+
+ r = sd_event_source_set_time(timer, now+f->post_change_timer_period);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to set time for scheduling ftruncate: %m");
+ goto fail;
+ }
+
+ r = sd_event_source_set_enabled(timer, SD_EVENT_ONESHOT);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to enable scheduled ftruncate: %m");
+ goto fail;
+ }
+
+ return;
+
+fail:
+ /* On failure, let's simply post the change immediately. */
+ journal_file_post_change(f);
+}
+
+/* Enable coalesced change posting in a timer on the provided sd_event instance */
+int journal_file_enable_post_change_timer(JournalFile *f, sd_event *e, usec_t t) {
+ _cleanup_(sd_event_source_unrefp) sd_event_source *timer = NULL;
+ int r;
+
+ assert(f);
+ assert_return(!f->post_change_timer, -EINVAL);
+ assert(e);
+ assert(t);
+
+ r = sd_event_add_time(e, &timer, CLOCK_MONOTONIC, 0, 0, post_change_thunk, f);
+ if (r < 0)
+ return r;
+
+ r = sd_event_source_set_enabled(timer, SD_EVENT_OFF);
+ if (r < 0)
+ return r;
+
+ f->post_change_timer = timer;
+ timer = NULL;
+ f->post_change_timer_period = t;
+
+ return r;
}
static int entry_item_cmp(const void *_a, const void *_b) {
struct dual_timestamp _ts;
assert(f);
+ assert(f->header);
assert(iovec || n_iovec == 0);
if (!ts) {
ts = &_ts;
}
- if (f->tail_entry_monotonic_valid &&
- 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)
if (mmap_cache_got_sigbus(f->mmap, f->fd))
r = -EIO;
- journal_file_post_change(f);
+ if (f->post_change_timer)
+ schedule_post_change(f);
+ else
+ journal_file_post_change(f);
return r;
}
direction_t direction,
Object **ret,
uint64_t *offset) {
+ assert(f);
+ assert(f->header);
return generic_array_bisect(f,
le64toh(f->header->entry_array_offset),
direction_t direction,
Object **ret,
uint64_t *offset) {
+ assert(f);
+ assert(f->header);
return generic_array_bisect(f,
le64toh(f->header->entry_array_offset),
int journal_file_compare_locations(JournalFile *af, JournalFile *bf) {
assert(af);
+ assert(af->header);
assert(bf);
+ assert(bf->header);
assert(af->location_type == LOCATION_SEEK);
assert(bf->location_type == LOCATION_SEEK);
int r;
assert(f);
+ assert(f->header);
n = le64toh(f->header->n_entries);
if (n <= 0)
uint64_t p;
assert(f);
+ assert(f->header);
journal_file_print_header(f);
char bytes[FORMAT_BYTES_MAX];
assert(f);
+ assert(f->header);
printf("File Path: %s\n"
"File ID: %s\n"
goto fail;
}
+ if (template && template->post_change_timer) {
+ r = journal_file_enable_post_change_timer(
+ f,
+ sd_event_source_get_event(template->post_change_timer),
+ template->post_change_timer_period);
+
+ if (r < 0)
+ goto fail;
+ }
+
*ret = f;
return 0;
if (f->fd >= 0 && mmap_cache_got_sigbus(f->mmap, f->fd))
r = -EIO;
- journal_file_close(f);
+ (void) journal_file_close(f);
return r;
}
int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to) {
assert(f);
+ assert(f->header);
assert(from || to);
if (from) {
bool journal_file_rotate_suggested(JournalFile *f, usec_t max_file_usec) {
assert(f);
+ assert(f->header);
/* If we gained new header fields we gained new features,
* hence suggest a rotation */