#include <sys/statvfs.h>
#include <fcntl.h>
#include <stddef.h>
-#include <sys/xattr.h>
#include "journal-def.h"
#include "journal-file.h"
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) {
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),
return 1;
}
-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);
- 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)
- return -EBADMSG;
-
- if (i >= n)
- i = n-1;
-
- return generic_array_get(f,
- le64toh(f->header->entry_array_offset),
- i,
- ret, offset);
-}
-
int journal_file_next_entry_for_data(
JournalFile *f,
Object *o, uint64_t p,
}
if (f->last_stat.st_size == 0 && f->writable) {
- uint64_t crtime;
-
/* 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
* attributes are not supported we'll just skip this,
* 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);
+ fd_setcrtime(f->fd, now(CLOCK_REALTIME));
#ifdef HAVE_GCRYPT
/* Try to load the FSPRG state, and if we can't, then
~ianmdlvl / elogind.git / blobdiff