X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=src%2Fjournal%2Fjournal-file.c;h=ab45132f0f1a142d87dafa9c8b1cc91633e21156;hb=e892bd1797e99c8afaa6afdbe413fda78937c9c3;hp=5557028147eb66fdbe6084a77de88cfd2ad47208;hpb=de7b95cdc3228131498021c2fdcf6647004c3920;p=elogind.git diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c index 555702814..ab45132f0 100644 --- a/src/journal/journal-file.c +++ b/src/journal/journal-file.c @@ -892,19 +892,23 @@ int journal_file_move_to_entry(JournalFile *f, uint64_t seqnum, Object **ret, ui return 0; } -int journal_file_next_entry(JournalFile *f, Object *o, Object **ret, uint64_t *offset) { +int journal_file_next_entry(JournalFile *f, Object *o, direction_t direction, Object **ret, uint64_t *offset) { uint64_t np; int r; assert(f); if (!o) - np = le64toh(f->header->head_entry_offset); + np = le64toh(direction == DIRECTION_DOWN ? + f->header->head_entry_offset : + f->header->tail_entry_offset); else { if (le64toh(o->object.type) != OBJECT_ENTRY) return -EINVAL; - np = le64toh(o->entry.next_entry_offset); + np = le64toh(direction == DIRECTION_DOWN ? + o->entry.next_entry_offset : + o->entry.prev_entry_offset); } if (np == 0) @@ -954,7 +958,7 @@ int journal_file_prev_entry(JournalFile *f, Object *o, Object **ret, uint64_t *o return 1; } -int journal_file_find_first_entry(JournalFile *f, const void *data, uint64_t size, Object **ret, uint64_t *offset) { +int journal_file_find_first_entry(JournalFile *f, const void *data, uint64_t size, direction_t direction, Object **ret, uint64_t *offset) { uint64_t p, osize, hash, h; int r; @@ -980,59 +984,13 @@ int journal_file_find_first_entry(JournalFile *f, const void *data, uint64_t siz if (le64toh(o->data.hash) != hash) return -EBADMSG; - if (o->data.head_entry_offset == 0) - return 0; - - p = le64toh(o->data.head_entry_offset); - r = journal_file_move_to_object(f, p, OBJECT_ENTRY, &o); - if (r < 0) - return r; - - if (ret) - *ret = o; - - if (offset) - *offset = p; - - return 1; - } - - p = le64toh(o->data.next_hash_offset); - } - - return 0; -} - -int journal_file_find_last_entry(JournalFile *f, const void *data, uint64_t size, Object **ret, uint64_t *offset) { - uint64_t p, osize, hash, h; - int r; + p = le64toh(direction == DIRECTION_DOWN ? + o->data.head_entry_offset : + o->data.tail_entry_offset); - assert(f); - assert(data || size == 0); - - osize = offsetof(Object, data.payload) + size; - - hash = hash64(data, size); - h = hash % (le64toh(f->header->hash_table_size) / sizeof(HashItem)); - p = le64toh(f->hash_table[h].tail_hash_offset); - - while (p != 0) { - Object *o; - - r = journal_file_move_to_object(f, p, OBJECT_DATA, &o); - if (r < 0) - return r; - - if (le64toh(o->object.size) == osize && - memcmp(o->data.payload, data, size) == 0) { - - if (le64toh(o->data.hash) != hash) - return -EBADMSG; - - if (o->data.tail_entry_offset == 0) + if (p == 0) return 0; - p = le64toh(o->data.tail_entry_offset); r = journal_file_move_to_object(f, p, OBJECT_ENTRY, &o); if (r < 0) return r; @@ -1046,7 +1004,7 @@ int journal_file_find_last_entry(JournalFile *f, const void *data, uint64_t size return 1; } - p = le64toh(o->data.prev_hash_offset); + p = le64toh(o->data.next_hash_offset); } return 0;