#include "journal-def.h"
#include "journal-file.h"
+#include "journal-authenticate.h"
#include "lookup3.h"
#include "compress.h"
#include "fsprg.h"
#define DEFAULT_DATA_HASH_TABLE_SIZE (2047ULL*sizeof(HashItem))
#define DEFAULT_FIELD_HASH_TABLE_SIZE (333ULL*sizeof(HashItem))
-#define DEFAULT_WINDOW_SIZE (8ULL*1024ULL*1024ULL)
-
#define COMPRESSION_SIZE_THRESHOLD (512ULL)
/* This is the minimum journal file size */
/* n_data was the first entry we added after the initial file format design */
#define HEADER_SIZE_MIN ALIGN64(offsetof(Header, n_data))
-#define ALIGN64(x) (((x) + 7ULL) & ~7ULL)
-
-#define JOURNAL_HEADER_CONTAINS(h, field) \
- (le64toh((h)->header_size) >= offsetof(Header, field) + sizeof((h)->field))
-
-static int journal_file_maybe_append_tag(JournalFile *f, uint64_t realtime);
-static int journal_file_hmac_put_object(JournalFile *f, int type, uint64_t p);
-
void journal_file_close(JournalFile *f) {
- int t;
-
assert(f);
/* Write the final tag */
- if (f->authenticate)
+ if (f->seal && f->writable)
journal_file_append_tag(f);
/* Sync everything to disk, before we mark the file offline */
- for (t = 0; t < _WINDOW_MAX; t++)
- if (f->windows[t].ptr)
- munmap(f->windows[t].ptr, f->windows[t].size);
+ if (f->mmap && f->fd >= 0)
+ mmap_cache_close_fd(f->mmap, f->fd);
if (f->writable && f->fd >= 0)
fdatasync(f->fd);
free(f->path);
+ if (f->mmap)
+ mmap_cache_unref(f->mmap);
+
#ifdef HAVE_XZ
free(f->compress_buffer);
#endif
#ifdef HAVE_GCRYPT
- if (f->fsprg_header)
- munmap(f->fsprg_header, PAGE_ALIGN(f->fsprg_size));
+ if (f->fss_file)
+ munmap(f->fss_file, PAGE_ALIGN(f->fss_file_size));
+ else if (f->fsprg_state)
+ free(f->fsprg_state);
+
+ free(f->fsprg_seed);
if (f->hmac)
gcry_md_close(f->hmac);
htole32(f->compress ? HEADER_INCOMPATIBLE_COMPRESSED : 0);
h.compatible_flags =
- htole32(f->authenticate ? HEADER_COMPATIBLE_AUTHENTICATED : 0);
+ htole32(f->seal ? HEADER_COMPATIBLE_SEALED : 0);
r = sd_id128_randomize(&h.file_id);
if (r < 0)
if (template) {
h.seqnum_id = template->header->seqnum_id;
- h.tail_seqnum = template->header->tail_seqnum;
+ h.tail_entry_seqnum = template->header->tail_entry_seqnum;
} else
h.seqnum_id = h.file_id;
* compatible flags, too */
if (f->writable) {
#ifdef HAVE_GCRYPT
- if ((le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_AUTHENTICATED) != 0)
+ if ((le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SEALED) != 0)
return -EPROTONOSUPPORT;
#else
if (f->header->compatible_flags != 0)
#endif
}
+ if (f->header->state >= _STATE_MAX)
+ return -EBADMSG;
+
/* The first addition was n_data, so check that we are at least this large */
if (le64toh(f->header->header_size) < HEADER_SIZE_MIN)
return -EBADMSG;
- if ((uint64_t) f->last_stat.st_size < (le64toh(f->header->header_size) + le64toh(f->header->arena_size)))
+ if ((le32toh(f->header->compatible_flags) & HEADER_COMPATIBLE_SEALED) &&
+ !JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays))
+ return -EBADMSG;
+
+ if ((le64toh(f->header->header_size) + le64toh(f->header->arena_size)) > (uint64_t) f->last_stat.st_size)
+ return -ENODATA;
+
+ 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))
return -ENODATA;
if (f->writable) {
}
f->compress = !!(le32toh(f->header->incompatible_flags) & HEADER_INCOMPATIBLE_COMPRESSED);
- f->authenticate = !!(le32toh(f->header->compatible_flags) & HEADER_COMPATIBLE_AUTHENTICATED);
+
+ if (f->writable)
+ f->seal = !!(le32toh(f->header->compatible_flags) & HEADER_COMPATIBLE_SEALED);
return 0;
}
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;
return 0;
}
-static int journal_file_map(
- JournalFile *f,
- uint64_t offset,
- uint64_t size,
- void **_window,
- uint64_t *_woffset,
- uint64_t *_wsize,
- void **ret) {
-
- uint64_t woffset, wsize;
- void *window;
-
+static int journal_file_move_to(JournalFile *f, int context, uint64_t offset, uint64_t size, void **ret) {
assert(f);
- assert(size > 0);
assert(ret);
- woffset = offset & ~((uint64_t) page_size() - 1ULL);
- wsize = size + (offset - woffset);
- wsize = PAGE_ALIGN(wsize);
-
/* Avoid SIGBUS on invalid accesses */
- if (woffset + wsize > (uint64_t) PAGE_ALIGN(f->last_stat.st_size))
- return -EADDRNOTAVAIL;
-
- window = mmap(NULL, wsize, f->prot, MAP_SHARED, f->fd, woffset);
- if (window == MAP_FAILED)
- return -errno;
-
- if (_window)
- *_window = window;
-
- if (_woffset)
- *_woffset = woffset;
-
- if (_wsize)
- *_wsize = wsize;
-
- *ret = (uint8_t*) window + (offset - woffset);
-
- return 0;
-}
-
-static int journal_file_move_to(JournalFile *f, int wt, uint64_t offset, uint64_t size, void **ret) {
- void *p = NULL;
- uint64_t delta;
- int r;
- Window *w;
-
- assert(f);
- assert(ret);
- assert(wt >= 0);
- assert(wt < _WINDOW_MAX);
-
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. */
return -EADDRNOTAVAIL;
}
- w = f->windows + wt;
-
- if (_likely_(w->ptr &&
- w->offset <= offset &&
- w->offset + w->size >= offset + size)) {
-
- *ret = (uint8_t*) w->ptr + (offset - w->offset);
- return 0;
- }
-
- if (w->ptr) {
- if (munmap(w->ptr, w->size) < 0)
- return -errno;
-
- w->ptr = NULL;
- w->size = w->offset = 0;
- }
-
- if (size < DEFAULT_WINDOW_SIZE) {
- /* If the default window size is larger then what was
- * asked for extend the mapping a bit in the hope to
- * minimize needed remappings later on. We add half
- * the window space before and half behind the
- * requested mapping */
-
- delta = (DEFAULT_WINDOW_SIZE - size) / 2;
-
- if (delta > offset)
- delta = offset;
-
- offset -= delta;
- size = DEFAULT_WINDOW_SIZE;
- } else
- delta = 0;
-
- if (offset + size > (uint64_t) f->last_stat.st_size)
- size = (uint64_t) f->last_stat.st_size - offset;
-
- if (size <= 0)
- return -EADDRNOTAVAIL;
-
- r = journal_file_map(f,
- offset, size,
- &w->ptr, &w->offset, &w->size,
- &p);
-
- if (r < 0)
- return r;
-
- *ret = (uint8_t*) p + delta;
- return 0;
+ return mmap_cache_get(f->mmap, f->fd, f->prot, context, offset, size, ret);
}
-static bool verify_hash(Object *o) {
- uint64_t h1, h2;
+static uint64_t minimum_header_size(Object *o) {
- assert(o);
+ static uint64_t table[] = {
+ [OBJECT_DATA] = sizeof(DataObject),
+ [OBJECT_FIELD] = sizeof(FieldObject),
+ [OBJECT_ENTRY] = sizeof(EntryObject),
+ [OBJECT_DATA_HASH_TABLE] = sizeof(HashTableObject),
+ [OBJECT_FIELD_HASH_TABLE] = sizeof(HashTableObject),
+ [OBJECT_ENTRY_ARRAY] = sizeof(EntryArrayObject),
+ [OBJECT_TAG] = sizeof(TagObject),
+ };
- if (o->object.type == OBJECT_DATA && !(o->object.flags & OBJECT_COMPRESSED)) {
- h1 = le64toh(o->data.hash);
- h2 = hash64(o->data.payload, le64toh(o->object.size) - offsetof(Object, data.payload));
- } else if (o->object.type == OBJECT_FIELD) {
- h1 = le64toh(o->field.hash);
- h2 = hash64(o->field.payload, le64toh(o->object.size) - offsetof(Object, field.payload));
- } else
- return true;
+ if (o->object.type >= ELEMENTSOF(table) || table[o->object.type] <= 0)
+ return sizeof(ObjectHeader);
- return h1 == h2;
+ return table[o->object.type];
}
int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret) {
void *t;
Object *o;
uint64_t s;
+ unsigned context;
assert(f);
assert(ret);
- assert(type < _OBJECT_TYPE_MAX);
- r = journal_file_move_to(f, type >= 0 ? type : WINDOW_UNKNOWN, offset, sizeof(ObjectHeader), &t);
+ /* Objects may only be located at multiple of 64 bit */
+ 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);
if (r < 0)
return r;
if (s < sizeof(ObjectHeader))
return -EBADMSG;
+ if (o->object.type <= OBJECT_UNUSED)
+ return -EBADMSG;
+
+ if (s < minimum_header_size(o))
+ return -EBADMSG;
+
if (type >= 0 && o->object.type != type)
return -EBADMSG;
o = (Object*) t;
}
- if (!verify_hash(o))
- return -EBADMSG;
-
*ret = o;
return 0;
}
assert(f);
- r = le64toh(f->header->tail_seqnum) + 1;
+ r = le64toh(f->header->tail_entry_seqnum) + 1;
if (seqnum) {
/* If an external seqnum counter was passed, we update
*seqnum = r;
}
- f->header->tail_seqnum = htole64(r);
+ f->header->tail_entry_seqnum = htole64(r);
- if (f->header->head_seqnum == 0)
- f->header->head_seqnum = htole64(r);
+ if (f->header->head_entry_seqnum == 0)
+ f->header->head_entry_seqnum = htole64(r);
return r;
}
-static int journal_file_append_object(JournalFile *f, int type, uint64_t size, Object **ret, uint64_t *offset) {
+int journal_file_append_object(JournalFile *f, int 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(size >= sizeof(ObjectHeader));
assert(offset);
assert(ret);
s = le64toh(f->header->data_hash_table_size);
r = journal_file_move_to(f,
- WINDOW_DATA_HASH_TABLE,
+ OBJECT_DATA_HASH_TABLE,
p, s,
&t);
if (r < 0)
s = le64toh(f->header->field_hash_table_size);
r = journal_file_move_to(f,
- WINDOW_FIELD_HASH_TABLE,
+ OBJECT_FIELD_HASH_TABLE,
p, s,
&t);
if (r < 0)
return (le64toh(o->object.size) - offsetof(Object, entry.items)) / sizeof(EntryItem);
}
-static uint64_t journal_file_entry_array_n_items(Object *o) {
+uint64_t journal_file_entry_array_n_items(Object *o) {
assert(o);
assert(o->object.type == OBJECT_ENTRY_ARRAY);
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);
+
+ return (le64toh(o->object.size) - offsetof(Object, hash_table.items)) / sizeof(HashItem);
+}
+
static int link_entry_into_array(JournalFile *f,
le64_t *first,
le64_t *idx,
o->entry_array.next_entry_array_offset = htole64(q);
}
+ if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays))
+ f->header->n_entry_arrays = htole64(le64toh(f->header->n_entry_arrays) + 1);
+
*idx = htole64(hidx + 1);
return 0;
ret, offset, NULL);
}
-static void *fsprg_state(JournalFile *f) {
- uint64_t a, b;
- assert(f);
-
- if (!f->authenticate)
- return NULL;
-
- a = le64toh(f->fsprg_header->header_size);
- b = le64toh(f->fsprg_header->state_size);
-
- if (a + b > f->fsprg_size)
- return NULL;
-
- return (uint8_t*) f->fsprg_header + a;
-}
-
-static uint64_t journal_file_tag_seqnum(JournalFile *f) {
- uint64_t r;
-
- assert(f);
-
- r = le64toh(f->header->n_tags) + 1;
- f->header->n_tags = htole64(r);
-
- return r;
-}
-
-int journal_file_append_tag(JournalFile *f) {
- Object *o;
- uint64_t p;
- int r;
-
- assert(f);
-
- if (!f->authenticate)
- return 0;
-
- if (!f->hmac_running)
- return 0;
-
- log_debug("Writing tag for epoch %llu\n", (unsigned long long) FSPRG_GetEpoch(fsprg_state(f)));
-
- assert(f->hmac);
-
- r = journal_file_append_object(f, OBJECT_TAG, sizeof(struct TagObject), &o, &p);
- if (r < 0)
- return r;
-
- o->tag.seqnum = htole64(journal_file_tag_seqnum(f));
-
- /* Add the tag object itself, so that we can protect its
- * header. This will exclude the actual hash value in it */
- r = journal_file_hmac_put_object(f, OBJECT_TAG, p);
- if (r < 0)
- return r;
-
- /* Get the HMAC tag and store it in the object */
- memcpy(o->tag.tag, gcry_md_read(f->hmac, 0), TAG_LENGTH);
- f->hmac_running = false;
-
- return 0;
-}
-
-static int journal_file_hmac_start(JournalFile *f) {
- uint8_t key[256 / 8]; /* Let's pass 256 bit from FSPRG to HMAC */
-
- assert(f);
-
- if (!f->authenticate)
- return 0;
-
- if (f->hmac_running)
- return 0;
-
- /* Prepare HMAC for next cycle */
- gcry_md_reset(f->hmac);
- FSPRG_GetKey(fsprg_state(f), key, sizeof(key), 0);
- gcry_md_setkey(f->hmac, key, sizeof(key));
-
- f->hmac_running = true;
-
- return 0;
-}
-
-static int journal_file_get_epoch(JournalFile *f, uint64_t realtime, uint64_t *epoch) {
- uint64_t t;
-
- assert(f);
- assert(epoch);
- assert(f->authenticate);
-
- if (le64toh(f->fsprg_header->fsprg_start_usec) == 0 ||
- le64toh(f->fsprg_header->fsprg_interval_usec) == 0)
- return -ENOTSUP;
-
- if (realtime < le64toh(f->fsprg_header->fsprg_start_usec))
- return -ESTALE;
-
- t = realtime - le64toh(f->fsprg_header->fsprg_start_usec);
- t = t / le64toh(f->fsprg_header->fsprg_interval_usec);
-
- *epoch = t;
- return 0;
-}
-
-static int journal_file_need_evolve(JournalFile *f, uint64_t realtime) {
- uint64_t goal, epoch;
- int r;
- assert(f);
-
- if (!f->authenticate)
- return 0;
-
- r = journal_file_get_epoch(f, realtime, &goal);
- if (r < 0)
- return r;
-
- epoch = FSPRG_GetEpoch(fsprg_state(f));
- if (epoch > goal)
- return -ESTALE;
-
- return epoch != goal;
-}
-
-static int journal_file_evolve(JournalFile *f, uint64_t realtime) {
- uint64_t goal, epoch;
- int r;
-
- assert(f);
-
- if (!f->authenticate)
- return 0;
-
- r = journal_file_get_epoch(f, realtime, &goal);
- if (r < 0)
- return r;
-
- epoch = FSPRG_GetEpoch(fsprg_state(f));
- if (epoch < goal)
- log_debug("Evolving FSPRG key from epoch %llu to %llu.", (unsigned long long) epoch, (unsigned long long) goal);
-
- for (;;) {
- if (epoch > goal)
- return -ESTALE;
- if (epoch == goal)
- return 0;
-
- FSPRG_Evolve(fsprg_state(f));
- epoch = FSPRG_GetEpoch(fsprg_state(f));
- }
-}
-
-static int journal_file_maybe_append_tag(JournalFile *f, uint64_t realtime) {
- int r;
-
- assert(f);
-
- if (!f->authenticate)
- return 0;
-
- r = journal_file_need_evolve(f, realtime);
- if (r <= 0)
- return 0;
-
- r = journal_file_append_tag(f);
- if (r < 0)
- return r;
-
- r = journal_file_evolve(f, realtime);
- if (r < 0)
- return r;
-
- r = journal_file_hmac_start(f);
- if (r < 0)
- return r;
-
- return 0;
-}
-
-static int journal_file_hmac_put_object(JournalFile *f, int type, uint64_t p) {
- int r;
- Object *o;
-
- assert(f);
-
- if (!f->authenticate)
- return 0;
-
- r = journal_file_hmac_start(f);
- if (r < 0)
- return r;
-
- r = journal_file_move_to_object(f, type, p, &o);
- if (r < 0)
- return r;
-
- gcry_md_write(f->hmac, o, offsetof(ObjectHeader, payload));
-
- switch (o->object.type) {
-
- case OBJECT_DATA:
- /* All but: hash and payload are mutable */
- gcry_md_write(f->hmac, &o->data.hash, sizeof(o->data.hash));
- gcry_md_write(f->hmac, o->data.payload, le64toh(o->object.size) - offsetof(DataObject, payload));
- break;
-
- case OBJECT_ENTRY:
- /* All */
- gcry_md_write(f->hmac, &o->entry.seqnum, le64toh(o->object.size) - offsetof(EntryObject, seqnum));
- break;
-
- case OBJECT_FIELD_HASH_TABLE:
- case OBJECT_DATA_HASH_TABLE:
- case OBJECT_ENTRY_ARRAY:
- /* Nothing: everything is mutable */
- break;
-
- case OBJECT_TAG:
- /* All but the tag itself */
- gcry_md_write(f->hmac, &o->tag.seqnum, sizeof(o->tag.seqnum));
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int journal_file_hmac_put_header(JournalFile *f) {
- int r;
-
- assert(f);
-
- if (!f->authenticate)
- return 0;
-
- r = journal_file_hmac_start(f);
- if (r < 0)
- return r;
-
- /* All but state+reserved, boot_id, arena_size,
- * tail_object_offset, n_objects, n_entries, tail_seqnum,
- * head_entry_realtime, tail_entry_realtime,
- * tail_entry_monotonic, n_data, n_fields, header_tag */
-
- gcry_md_write(f->hmac, f->header->signature, offsetof(Header, state) - offsetof(Header, signature));
- gcry_md_write(f->hmac, &f->header->file_id, offsetof(Header, boot_id) - offsetof(Header, file_id));
- gcry_md_write(f->hmac, &f->header->seqnum_id, offsetof(Header, arena_size) - offsetof(Header, seqnum_id));
- gcry_md_write(f->hmac, &f->header->data_hash_table_offset, offsetof(Header, tail_object_offset) - offsetof(Header, data_hash_table_offset));
- gcry_md_write(f->hmac, &f->header->head_seqnum, offsetof(Header, head_entry_realtime) - offsetof(Header, head_seqnum));
-
- return 0;
-}
-
-static int journal_file_load_fsprg(JournalFile *f) {
- int r, fd = -1;
- char *p = NULL;
- struct stat st;
- FSPRGHeader *m = NULL;
- sd_id128_t machine;
-
- assert(f);
-
- if (!f->authenticate)
- return 0;
-
- r = sd_id128_get_machine(&machine);
- if (r < 0)
- return r;
-
- if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/fsprg",
- SD_ID128_FORMAT_VAL(machine)) < 0)
- return -ENOMEM;
-
- fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY, 0600);
- if (fd < 0) {
- log_error("Failed to open %s: %m", p);
- r = -errno;
- goto finish;
- }
-
- if (fstat(fd, &st) < 0) {
- r = -errno;
- goto finish;
- }
-
- if (st.st_size < (off_t) sizeof(FSPRGHeader)) {
- r = -ENODATA;
- goto finish;
- }
-
- m = mmap(NULL, PAGE_ALIGN(sizeof(FSPRGHeader)), PROT_READ, MAP_SHARED, fd, 0);
- if (m == MAP_FAILED) {
- m = NULL;
- r = -errno;
- goto finish;
- }
-
- if (memcmp(m->signature, FSPRG_HEADER_SIGNATURE, 8) != 0) {
- r = -EBADMSG;
- goto finish;
- }
-
- if (m->incompatible_flags != 0) {
- r = -EPROTONOSUPPORT;
- goto finish;
- }
-
- if (le64toh(m->header_size) < sizeof(FSPRGHeader)) {
- r = -EBADMSG;
- goto finish;
- }
-
- if (le64toh(m->state_size) != FSPRG_stateinbytes(m->secpar)) {
- r = -EBADMSG;
- goto finish;
- }
-
- f->fsprg_size = le64toh(m->header_size) + le64toh(m->state_size);
- if ((uint64_t) st.st_size < f->fsprg_size) {
- r = -ENODATA;
- goto finish;
- }
-
- if (!sd_id128_equal(machine, m->machine_id)) {
- r = -EHOSTDOWN;
- goto finish;
- }
-
- if (le64toh(m->fsprg_start_usec) <= 0 ||
- le64toh(m->fsprg_interval_usec) <= 0) {
- r = -EBADMSG;
- goto finish;
- }
-
- f->fsprg_header = mmap(NULL, PAGE_ALIGN(f->fsprg_size), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
- if (f->fsprg_header == MAP_FAILED) {
- f->fsprg_header = NULL;
- r = -errno;
- goto finish;
- }
-
- r = 0;
-
-finish:
- if (m)
- munmap(m, PAGE_ALIGN(sizeof(FSPRGHeader)));
-
- if (fd >= 0)
- close_nointr_nofail(fd);
-
- free(p);
- return r;
-}
-
-static int journal_file_setup_hmac(JournalFile *f) {
- gcry_error_t e;
-
- if (!f->authenticate)
- return 0;
-
- e = gcry_md_open(&f->hmac, GCRY_MD_SHA256, GCRY_MD_FLAG_HMAC);
- if (e != 0)
- return -ENOTSUP;
-
- return 0;
-}
-
-static int journal_file_append_first_tag(JournalFile *f) {
- int r;
- uint64_t p;
-
- if (!f->authenticate)
- return 0;
-
- log_debug("Calculating first tag...");
-
- r = journal_file_hmac_put_header(f);
- if (r < 0)
- return r;
-
- p = le64toh(f->header->field_hash_table_offset);
- if (p < offsetof(Object, hash_table.items))
- return -EINVAL;
- p -= offsetof(Object, hash_table.items);
-
- r = journal_file_hmac_put_object(f, OBJECT_FIELD_HASH_TABLE, p);
- if (r < 0)
- return r;
-
- p = le64toh(f->header->data_hash_table_offset);
- if (p < offsetof(Object, hash_table.items))
- return -EINVAL;
- p -= offsetof(Object, hash_table.items);
-
- r = journal_file_hmac_put_object(f, OBJECT_DATA_HASH_TABLE, p);
- if (r < 0)
- return r;
-
- r = journal_file_append_tag(f);
- if (r < 0)
- return r;
-
- return 0;
-}
-
void journal_file_dump(JournalFile *f) {
Object *o;
int r;
"Arena size: %llu\n"
"Data Hash Table Size: %llu\n"
"Field Hash Table Size: %llu\n"
- "Objects: %llu\n"
- "Entry Objects: %llu\n"
"Rotate Suggested: %s\n"
"Head Sequential Number: %llu\n"
"Tail Sequential Number: %llu\n"
"Head Realtime Timestamp: %s\n"
- "Tail Realtime Timestamp: %s\n",
+ "Tail Realtime Timestamp: %s\n"
+ "Objects: %llu\n"
+ "Entry Objects: %llu\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),
- f->header->state == STATE_OFFLINE ? "offline" :
- f->header->state == STATE_ONLINE ? "online" :
- f->header->state == STATE_ARCHIVED ? "archived" : "unknown",
- (f->header->compatible_flags & HEADER_COMPATIBLE_AUTHENTICATED) ? " AUTHENTICATED" : "",
- (f->header->compatible_flags & ~HEADER_COMPATIBLE_AUTHENTICATED) ? " ???" : "",
+ f->header->state == STATE_OFFLINE ? "OFFLINE" :
+ f->header->state == STATE_ONLINE ? "ONLINE" :
+ f->header->state == STATE_ARCHIVED ? "ARCHIVED" : "UNKNOWN",
+ (f->header->compatible_flags & HEADER_COMPATIBLE_SEALED) ? " SEALED" : "",
+ (f->header->compatible_flags & ~HEADER_COMPATIBLE_SEALED) ? " ???" : "",
(f->header->incompatible_flags & HEADER_INCOMPATIBLE_COMPRESSED) ? " COMPRESSED" : "",
(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),
- (unsigned long long) le64toh(f->header->n_objects),
- (unsigned long long) le64toh(f->header->n_entries),
yes_no(journal_file_rotate_suggested(f)),
- (unsigned long long) le64toh(f->header->head_seqnum),
- (unsigned long long) le64toh(f->header->tail_seqnum),
+ (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)));
+ 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));
if (JOURNAL_HEADER_CONTAINS(f->header, n_data))
printf("Data Objects: %llu\n"
"Field Hash Table Fill: %.1f%%\n",
(unsigned long long) 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));
+ if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays))
+ printf("Entry Array Objects: %llu\n",
+ (unsigned long long) le64toh(f->header->n_entry_arrays));
}
int journal_file_open(
int flags,
mode_t mode,
bool compress,
- bool authenticate,
+ bool seal,
JournalMetrics *metrics,
+ MMapCache *mmap_cache,
JournalFile *template,
JournalFile **ret) {
(flags & O_ACCMODE) != O_RDWR)
return -EINVAL;
- if (!endswith(fname, ".journal"))
+ if (!endswith(fname, ".journal") &&
+ !endswith(fname, ".journal~"))
return -EINVAL;
f = new0(JournalFile, 1);
f->prot = prot_from_flags(flags);
f->writable = (flags & O_ACCMODE) != O_RDONLY;
f->compress = compress;
- f->authenticate = authenticate;
+ f->seal = seal;
+
+ if (mmap_cache)
+ f->mmap = mmap_cache_ref(mmap_cache);
+ else {
+ f->mmap = mmap_cache_new();
+ if (!f->mmap) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
f->path = strdup(fname);
if (!f->path) {
newly_created = true;
/* Try to load the FSPRG state, and if we can't, then
- * just don't do authentication */
- r = journal_file_load_fsprg(f);
+ * just don't do sealing */
+ r = journal_file_fss_load(f);
if (r < 0)
- f->authenticate = false;
+ f->seal = false;
r = journal_file_init_header(f, template);
if (r < 0)
}
if (!newly_created && f->writable) {
- r = journal_file_load_fsprg(f);
+ r = journal_file_fss_load(f);
if (r < 0)
goto fail;
}
r = journal_file_refresh_header(f);
if (r < 0)
goto fail;
-
- r = journal_file_setup_hmac(f);
- if (r < 0)
- goto fail;
}
+ r = journal_file_hmac_setup(f);
+ if (r < 0)
+ goto fail;
+
if (newly_created) {
r = journal_file_setup_field_hash_table(f);
if (r < 0)
return r;
}
-int journal_file_rotate(JournalFile **f, bool compress, bool authenticate) {
+int journal_file_rotate(JournalFile **f, bool compress, bool seal) {
char *p;
size_t l;
JournalFile *old_file, *new_file = NULL;
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_seqnum),
+ (unsigned long long) le64toh((*f)->header->tail_entry_seqnum),
(unsigned long long) le64toh((*f)->header->tail_entry_realtime));
r = rename(old_file->path, p);
old_file->header->state = STATE_ARCHIVED;
- r = journal_file_open(old_file->path, old_file->flags, old_file->mode, compress, authenticate, NULL, old_file, &new_file);
+ 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);
*f = new_file;
int flags,
mode_t mode,
bool compress,
- bool authenticate,
+ bool seal,
JournalMetrics *metrics,
+ MMapCache *mmap_cache,
JournalFile *template,
JournalFile **ret) {
size_t l;
char *p;
- r = journal_file_open(fname, flags, mode, compress, authenticate, metrics, template, ret);
+ r = journal_file_open(fname, flags, mode, compress, seal,
+ metrics, mmap_cache, template, ret);
if (r != -EBADMSG && /* corrupted */
r != -ENODATA && /* truncated */
r != -EHOSTDOWN && /* other machine */
log_warning("File %s corrupted or uncleanly shut down, renaming and replacing.", fname);
- return journal_file_open(fname, flags, mode, compress, authenticate, metrics, template, ret);
-}
-
-struct vacuum_info {
- off_t usage;
- char *filename;
-
- uint64_t realtime;
- sd_id128_t seqnum_id;
- uint64_t seqnum;
-
- bool have_seqnum;
-};
-
-static int vacuum_compare(const void *_a, const void *_b) {
- const struct vacuum_info *a, *b;
-
- a = _a;
- b = _b;
-
- if (a->have_seqnum && b->have_seqnum &&
- sd_id128_equal(a->seqnum_id, b->seqnum_id)) {
- if (a->seqnum < b->seqnum)
- return -1;
- else if (a->seqnum > b->seqnum)
- return 1;
- else
- return 0;
- }
-
- if (a->realtime < b->realtime)
- return -1;
- else if (a->realtime > b->realtime)
- return 1;
- else if (a->have_seqnum && b->have_seqnum)
- return memcmp(&a->seqnum_id, &b->seqnum_id, 16);
- else
- return strcmp(a->filename, b->filename);
+ return journal_file_open(fname, flags, mode, compress, seal,
+ metrics, mmap_cache, template, ret);
}
-int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t min_free) {
- DIR *d;
- int r = 0;
- struct vacuum_info *list = NULL;
- unsigned n_list = 0, n_allocated = 0, i;
- uint64_t sum = 0;
-
- assert(directory);
-
- if (max_use <= 0)
- return 0;
-
- d = opendir(directory);
- if (!d)
- return -errno;
-
- for (;;) {
- int k;
- struct dirent buf, *de;
- size_t q;
- struct stat st;
- char *p;
- unsigned long long seqnum = 0, realtime;
- sd_id128_t seqnum_id;
- bool have_seqnum;
-
- k = readdir_r(d, &buf, &de);
- if (k != 0) {
- r = -k;
- goto finish;
- }
-
- if (!de)
- break;
-
- if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
- continue;
-
- if (!S_ISREG(st.st_mode))
- continue;
-
- q = strlen(de->d_name);
-
- if (endswith(de->d_name, ".journal")) {
-
- /* Vacuum archived files */
-
- if (q < 1 + 32 + 1 + 16 + 1 + 16 + 8)
- continue;
-
- if (de->d_name[q-8-16-1] != '-' ||
- de->d_name[q-8-16-1-16-1] != '-' ||
- de->d_name[q-8-16-1-16-1-32-1] != '@')
- continue;
-
- p = strdup(de->d_name);
- if (!p) {
- r = -ENOMEM;
- goto finish;
- }
-
- de->d_name[q-8-16-1-16-1] = 0;
- if (sd_id128_from_string(de->d_name + q-8-16-1-16-1-32, &seqnum_id) < 0) {
- free(p);
- continue;
- }
-
- if (sscanf(de->d_name + q-8-16-1-16, "%16llx-%16llx.journal", &seqnum, &realtime) != 2) {
- free(p);
- continue;
- }
-
- have_seqnum = true;
-
- } else if (endswith(de->d_name, ".journal~")) {
- unsigned long long tmp;
-
- /* Vacuum corrupted files */
-
- if (q < 1 + 16 + 1 + 16 + 8 + 1)
- continue;
-
- if (de->d_name[q-1-8-16-1] != '-' ||
- de->d_name[q-1-8-16-1-16-1] != '@')
- continue;
-
- p = strdup(de->d_name);
- if (!p) {
- r = -ENOMEM;
- goto finish;
- }
-
- if (sscanf(de->d_name + q-1-8-16-1-16, "%16llx-%16llx.journal~", &realtime, &tmp) != 2) {
- free(p);
- continue;
- }
-
- have_seqnum = false;
- } else
- continue;
-
- if (n_list >= n_allocated) {
- struct vacuum_info *j;
-
- n_allocated = MAX(n_allocated * 2U, 8U);
- j = realloc(list, n_allocated * sizeof(struct vacuum_info));
- if (!j) {
- free(p);
- r = -ENOMEM;
- goto finish;
- }
-
- list = j;
- }
-
- list[n_list].filename = p;
- list[n_list].usage = 512UL * (uint64_t) st.st_blocks;
- list[n_list].seqnum = seqnum;
- list[n_list].realtime = realtime;
- list[n_list].seqnum_id = seqnum_id;
- list[n_list].have_seqnum = have_seqnum;
-
- sum += list[n_list].usage;
-
- n_list ++;
- }
-
- if (n_list > 0)
- qsort(list, n_list, sizeof(struct vacuum_info), vacuum_compare);
-
- for(i = 0; i < n_list; i++) {
- struct statvfs ss;
-
- if (fstatvfs(dirfd(d), &ss) < 0) {
- r = -errno;
- goto finish;
- }
-
- if (sum <= max_use &&
- (uint64_t) ss.f_bavail * (uint64_t) ss.f_bsize >= min_free)
- break;
-
- if (unlinkat(dirfd(d), list[i].filename, 0) >= 0) {
- log_info("Deleted archived journal %s/%s.", directory, list[i].filename);
- sum -= list[i].usage;
- } else if (errno != ENOENT)
- log_warning("Failed to delete %s/%s: %m", directory, list[i].filename);
- }
-
-finish:
- for (i = 0; i < n_list; i++)
- free(list[i].filename);
-
- free(list);
-
- if (d)
- closedir(d);
-
- return r;
-}
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;
~ianmdlvl / elogind.git / blobdiff