- 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_entry_seqnum, offsetof(Header, head_entry_realtime) - offsetof(Header, head_entry_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;
-}
-
-static int journal_file_object_verify(JournalFile *f, Object *o) {
- assert(f);
- assert(o);
-
- /* This does various superficial tests about the length an
- * possible field values. It does not follow any references to
- * other objects. */
-
- switch (o->object.type) {
- case OBJECT_DATA:
- if (le64toh(o->data.entry_offset) <= 0 ||
- le64toh(o->data.n_entries) <= 0)
- return -EBADMSG;
-
- if (le64toh(o->object.size) - offsetof(DataObject, payload) <= 0)
- return -EBADMSG;
- break;
-
- case OBJECT_FIELD:
- if (le64toh(o->object.size) - offsetof(FieldObject, payload) <= 0)
- return -EBADMSG;
- break;
-
- case OBJECT_ENTRY:
- if ((le64toh(o->object.size) - offsetof(EntryObject, items)) % sizeof(EntryItem) != 0)
- return -EBADMSG;
-
- if ((le64toh(o->object.size) - offsetof(EntryObject, items)) / sizeof(EntryItem) <= 0)
- return -EBADMSG;
-
- if (le64toh(o->entry.seqnum) <= 0 ||
- le64toh(o->entry.realtime) <= 0)
- return -EBADMSG;
-
- break;
-
- case OBJECT_DATA_HASH_TABLE:
- case OBJECT_FIELD_HASH_TABLE:
- if ((le64toh(o->object.size) - offsetof(HashTableObject, items)) % sizeof(HashItem) != 0)
- return -EBADMSG;
-
- break;
-
- case OBJECT_ENTRY_ARRAY:
- if ((le64toh(o->object.size) - offsetof(EntryArrayObject, items)) % sizeof(le64_t) != 0)
- return -EBADMSG;
-
- break;
-
- case OBJECT_TAG:
- if (le64toh(o->object.size) != sizeof(TagObject))
- return -EBADMSG;
- break;
- }
-
- return 0;
-}
-
-static void draw_progress(uint64_t p, usec_t *last_usec) {
- unsigned n, i, j, k;
- usec_t z, x;
-
- if (!isatty(STDOUT_FILENO))
- return;
-
- z = now(CLOCK_MONOTONIC);
- x = *last_usec;
-
- if (x != 0 && x + 40 * USEC_PER_MSEC > z)
- return;
-
- *last_usec = z;
-
- n = (3 * columns()) / 4;
- j = (n * (unsigned) p) / 65535ULL;
- k = n - j;
-
- fputs("\r\x1B[?25l", stdout);
-
- for (i = 0; i < j; i++)
- fputs("\xe2\x96\x88", stdout);
-
- for (i = 0; i < k; i++)
- fputs("\xe2\x96\x91", stdout);
-
- printf(" %3lu%%", 100LU * (unsigned long) p / 65535LU);
-
- fputs("\r\x1B[?25h", stdout);
- fflush(stdout);
-}
-
-static void flush_progress(void) {
- unsigned n, i;
-
- if (!isatty(STDOUT_FILENO))
- return;
-
- n = (3 * columns()) / 4;
-
- putchar('\r');
-
- for (i = 0; i < n + 5; i++)
- putchar(' ');
-
- putchar('\r');
- fflush(stdout);
-}
-
-int journal_file_verify(JournalFile *f, const char *key) {
- int r;
- Object *o;
- uint64_t p = 0, q = 0, e;
- uint64_t tag_seqnum = 0, entry_seqnum = 0, entry_monotonic = 0, entry_realtime = 0;
- sd_id128_t entry_boot_id;
- bool entry_seqnum_set = false, entry_monotonic_set = false, entry_realtime_set = false, found_main_entry_array = false;
- uint64_t n_weird = 0, n_objects = 0, n_entries = 0, n_data = 0, n_fields = 0, n_data_hash_tables = 0, n_field_hash_tables = 0;
- usec_t last_usec = 0;
-
- assert(f);
-
- /* First iteration: we go through all objects, verify the
- * superficial structure, headers, hashes. */
-
- r = journal_file_hmac_put_header(f);
- if (r < 0) {
- log_error("Failed to calculate HMAC of header.");
- goto fail;
- }
-
- p = le64toh(f->header->header_size);
- while (p != 0) {
- draw_progress((65535ULL * p / le64toh(f->header->tail_object_offset)), &last_usec);
-
- r = journal_file_move_to_object(f, -1, p, &o);
- if (r < 0) {
- log_error("Invalid object at %llu", (unsigned long long) p);
- goto fail;
- }
-
- if (le64toh(f->header->tail_object_offset) < p) {
- log_error("Invalid tail object pointer.");
- r = -EBADMSG;
- goto fail;
- }
-
- n_objects ++;
-
- r = journal_file_object_verify(f, o);
- if (r < 0) {
- log_error("Invalid object contents at %llu", (unsigned long long) p);
- goto fail;
- }
-
- r = journal_file_hmac_put_object(f, -1, p);
- if (r < 0) {
- log_error("Failed to calculate HMAC at %llu", (unsigned long long) p);
- goto fail;
- }
-
- if (o->object.flags & OBJECT_COMPRESSED &&
- !(le32toh(f->header->incompatible_flags) & HEADER_INCOMPATIBLE_COMPRESSED)) {
- log_error("Compressed object without compression at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- if (o->object.flags & OBJECT_COMPRESSED &&
- o->object.type != OBJECT_DATA) {
- log_error("Compressed non-data object at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- if (o->object.type == OBJECT_TAG) {
-
- if (!(le32toh(f->header->compatible_flags) & HEADER_COMPATIBLE_AUTHENTICATED)) {
- log_error("Tag object without authentication at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- if (le64toh(o->tag.seqnum) != tag_seqnum) {
- log_error("Tag sequence number out of synchronization at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- } else if (o->object.type == OBJECT_ENTRY) {
-
- if (!entry_seqnum_set &&
- le64toh(o->entry.seqnum) != le64toh(f->header->head_entry_seqnum)) {
- log_error("Head entry sequence number incorrect");
- r = -EBADMSG;
- goto fail;
- }
-
- if (entry_seqnum_set &&
- entry_seqnum >= le64toh(o->entry.seqnum)) {
- log_error("Entry sequence number out of synchronization at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- entry_seqnum = le64toh(o->entry.seqnum);
- entry_seqnum_set = true;
-
- if (entry_monotonic_set &&
- sd_id128_equal(entry_boot_id, o->entry.boot_id) &&
- entry_monotonic > le64toh(o->entry.monotonic)) {
- log_error("Entry timestamp out of synchronization at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- entry_monotonic = le64toh(o->entry.monotonic);
- entry_boot_id = o->entry.boot_id;
- entry_monotonic_set = true;
-
- if (!entry_realtime_set &&
- le64toh(o->entry.realtime) != le64toh(f->header->head_entry_realtime)) {
- log_error("Head entry realtime timestamp incorrect");
- r = -EBADMSG;
- goto fail;
- }
-
- entry_realtime = le64toh(o->entry.realtime);
- entry_realtime_set = true;
-
- n_entries ++;
- } else if (o->object.type == OBJECT_ENTRY_ARRAY) {
-
- if (p == le64toh(f->header->entry_array_offset)) {
- if (found_main_entry_array) {
- log_error("More than one main entry array at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- found_main_entry_array = true;
- }
-
- } else if (o->object.type == OBJECT_DATA)
- n_data++;
- else if (o->object.type == OBJECT_FIELD)
- n_fields++;
- else if (o->object.type == OBJECT_DATA_HASH_TABLE) {
- n_data_hash_tables++;
-
- if (n_data_hash_tables > 1) {
- log_error("More than one data hash table at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- if (le64toh(f->header->data_hash_table_offset) != p + offsetof(HashTableObject, items) ||
- le64toh(f->header->data_hash_table_size) != le64toh(o->object.size) - offsetof(HashTableObject, items)) {
- log_error("Header fields for data hash table invalid.");
- r = -EBADMSG;
- goto fail;
- }
- } else if (o->object.type == OBJECT_FIELD_HASH_TABLE) {
- n_field_hash_tables++;
-
- if (n_field_hash_tables > 1) {
- log_error("More than one field hash table at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- if (le64toh(f->header->field_hash_table_offset) != p + offsetof(HashTableObject, items) ||
- le64toh(f->header->field_hash_table_size) != le64toh(o->object.size) - offsetof(HashTableObject, items)) {
- log_error("Header fields for field hash table invalid.");
- r = -EBADMSG;
- goto fail;
- }
- }
-
- if (o->object.type >= _OBJECT_TYPE_MAX)
- n_weird ++;
- else {
- /* Write address to file... */
-
- }
-
- if (p == le64toh(f->header->tail_object_offset))
- p = 0;
- else
- p = p + ALIGN64(le64toh(o->object.size));
- }
-
- if (n_objects != le64toh(f->header->n_objects)) {
- log_error("Object number mismatch");
- r = -EBADMSG;
- goto fail;
- }
-
- if (n_entries != le64toh(f->header->n_entries)) {
- log_error("Entry number mismatch");
- r = -EBADMSG;
- goto fail;
- }
-
- if (JOURNAL_HEADER_CONTAINS(f->header, n_data) &&
- n_data != le64toh(f->header->n_data)) {
- log_error("Data number mismatch");
- r = -EBADMSG;
- goto fail;
- }
-
- if (JOURNAL_HEADER_CONTAINS(f->header, n_fields) &&
- n_fields != le64toh(f->header->n_fields)) {
- log_error("Field number mismatch");
- r = -EBADMSG;
- goto fail;
- }
-
- if (JOURNAL_HEADER_CONTAINS(f->header, n_tags) &&
- tag_seqnum != le64toh(f->header->n_tags)) {
- log_error("Tag number mismatch");
- r = -EBADMSG;
- goto fail;
- }
-
- if (n_data_hash_tables != 1) {
- log_error("Missing data hash table");
- r = -EBADMSG;
- goto fail;
- }
-
- if (n_field_hash_tables != 1) {
- log_error("Missing field hash table");
- r = -EBADMSG;
- goto fail;
- }
-
- if (!found_main_entry_array) {
- log_error("Missing entry array");
- r = -EBADMSG;
- goto fail;
- }
-
- if (entry_seqnum_set &&
- entry_seqnum != le64toh(f->header->tail_entry_seqnum)) {
- log_error("Invalid tail seqnum");
- r = -EBADMSG;
- goto fail;
- }
-
- if (entry_monotonic_set &&
- (!sd_id128_equal(entry_boot_id, f->header->boot_id) ||
- entry_monotonic != le64toh(f->header->tail_entry_monotonic))) {
- log_error("Invalid tail monotonic timestamp");
- r = -EBADMSG;
- goto fail;
- }
-
- if (entry_realtime_set && entry_realtime != le64toh(f->header->tail_entry_realtime)) {
- log_error("Invalid tail realtime timestamp");
- r = -EBADMSG;
- goto fail;
- }
-
- /* Second iteration: we go through all objects again, this
- * time verify all pointers. */
-
- /* q = le64toh(f->header->header_size); */
- /* while (q != 0) { */
- /* r = journal_file_move_to_object(f, -1, q, &o); */
- /* if (r < 0) { */
- /* log_error("Invalid object at %llu", (unsigned long long) q); */
- /* goto fail; */
- /* } */
-
- /* if (q == le64toh(f->header->tail_object_offset)) */
- /* q = 0; */
- /* else */
- /* q = q + ALIGN64(le64toh(o->object.size)); */
- /* } */
-
- flush_progress();
-
- return 0;
-
-fail:
- e = p <= 0 ? q :
- q <= 0 ? p :
- MIN(p, q);
-
- flush_progress();
-
- log_error("File corruption detected at %s:%llu (of %llu, %llu%%).",
- f->path,
- (unsigned long long) e,
- (unsigned long long) f->last_stat.st_size,
- (unsigned long long) (100 * e / f->last_stat.st_size));
-
- return r;
-}
-
-void journal_file_dump(JournalFile *f) {
- Object *o;
- int r;
- uint64_t p;
-
- assert(f);
-
- journal_file_print_header(f);
-
- p = le64toh(f->header->header_size);
- while (p != 0) {
- r = journal_file_move_to_object(f, -1, p, &o);
- if (r < 0)
- goto fail;
-
- switch (o->object.type) {
-
- case OBJECT_UNUSED:
- printf("Type: OBJECT_UNUSED\n");
- break;
-
- case OBJECT_DATA:
- printf("Type: OBJECT_DATA\n");
- break;
-
- case OBJECT_ENTRY:
- printf("Type: OBJECT_ENTRY %llu %llu %llu\n",
- (unsigned long long) le64toh(o->entry.seqnum),
- (unsigned long long) le64toh(o->entry.monotonic),
- (unsigned long long) le64toh(o->entry.realtime));
- break;
-
- case OBJECT_FIELD_HASH_TABLE:
- printf("Type: OBJECT_FIELD_HASH_TABLE\n");
- break;
-
- case OBJECT_DATA_HASH_TABLE:
- printf("Type: OBJECT_DATA_HASH_TABLE\n");
- break;
-
- case OBJECT_ENTRY_ARRAY:
- printf("Type: OBJECT_ENTRY_ARRAY\n");
- break;
-
- case OBJECT_TAG:
- printf("Type: OBJECT_TAG %llu\n",
- (unsigned long long) le64toh(o->tag.seqnum));
- break;
- }
-
- if (o->object.flags & OBJECT_COMPRESSED)
- printf("Flags: COMPRESSED\n");
-
- if (p == le64toh(f->header->tail_object_offset))
- p = 0;
- else
- p = p + ALIGN64(le64toh(o->object.size));
- }
-
- return;
-fail:
- log_error("File corrupt");
-}
-
-void journal_file_print_header(JournalFile *f) {
- char a[33], b[33], c[33];
- char x[FORMAT_TIMESTAMP_MAX], y[FORMAT_TIMESTAMP_MAX];
-
- assert(f);
-
- printf("File Path: %s\n"
- "File ID: %s\n"
- "Machine ID: %s\n"
- "Boot ID: %s\n"
- "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"
- "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",
- 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->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_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)));
-
- if (JOURNAL_HEADER_CONTAINS(f->header, n_data))
- printf("Data Objects: %llu\n"
- "Data Hash Table Fill: %.1f%%\n",
- (unsigned long long) 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"
- "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))));
-}
-
-int journal_file_open(
- const char *fname,
- int flags,
- mode_t mode,
- bool compress,
- bool authenticate,
- JournalMetrics *metrics,
- MMapCache *mmap_cache,
- JournalFile *template,
- JournalFile **ret) {
-
- JournalFile *f;
- int r;
- bool newly_created = false;
-
- assert(fname);
-
- if ((flags & O_ACCMODE) != O_RDONLY &&
- (flags & O_ACCMODE) != O_RDWR)
- return -EINVAL;
-
- if (!endswith(fname, ".journal"))
- return -EINVAL;
-
- f = new0(JournalFile, 1);
- if (!f)
- return -ENOMEM;
-
- f->fd = -1;
- f->mode = mode;
-
- f->flags = flags;
- f->prot = prot_from_flags(flags);
- f->writable = (flags & O_ACCMODE) != O_RDONLY;
- f->compress = compress;
- f->authenticate = authenticate;
-
- if (mmap_cache)
- f->mmap = mmap_cache_ref(mmap_cache);
- else {
- /* One context for each type, plus the zeroth catchall
- * context. One fd for the file plus one for each type
- * (which we need during verification */
- f->mmap = mmap_cache_new(_OBJECT_TYPE_MAX, 1 + _OBJECT_TYPE_MAX);
- if (!f->mmap) {
- r = -ENOMEM;
- goto fail;
- }
- }
-
- f->path = strdup(fname);
- if (!f->path) {
- 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;
- goto fail;
- }
-
- if (f->last_stat.st_size == 0 && f->writable) {
- 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);
- if (r < 0)
- f->authenticate = false;
-
- r = journal_file_init_header(f, template);
- if (r < 0)
- goto fail;
-
- if (fstat(f->fd, &f->last_stat) < 0) {
- r = -errno;
- goto fail;
- }
- }
-
- if (f->last_stat.st_size < (off_t) HEADER_SIZE_MIN) {
- r = -EIO;
- 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 = -errno;