--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#include "journal-def.h"
+#include "journal-file.h"
+#include "journal-authenticate.h"
+#include "fsprg.h"
+
+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));
+ }
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
#include "journal-def.h"
#include "journal-file.h"
+#include "journal-authenticate.h"
#include "lookup3.h"
#include "compress.h"
#include "fsprg.h"
/* 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) {
assert(f);
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;
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);
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) {
+void journal_file_dump(JournalFile *f) {
Object *o;
- uint64_t p;
int r;
+ uint64_t p;
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);
+ journal_file_print_header(f);
- r = journal_file_append_object(f, OBJECT_TAG, sizeof(struct TagObject), &o, &p);
- if (r < 0)
- return r;
+ p = le64toh(f->header->header_size);
+ while (p != 0) {
+ r = journal_file_move_to_object(f, -1, p, &o);
+ if (r < 0)
+ goto fail;
- o->tag.seqnum = htole64(journal_file_tag_seqnum(f));
+ switch (o->object.type) {
- /* 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;
+ case OBJECT_UNUSED:
+ printf("Type: OBJECT_UNUSED\n");
+ break;
- /* 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;
+ case OBJECT_DATA:
+ printf("Type: OBJECT_DATA\n");
+ break;
- return 0;
-}
+ 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;
-static int journal_file_hmac_start(JournalFile *f) {
- uint8_t key[256 / 8]; /* Let's pass 256 bit from FSPRG to HMAC */
+ case OBJECT_FIELD_HASH_TABLE:
+ printf("Type: OBJECT_FIELD_HASH_TABLE\n");
+ break;
- assert(f);
+ case OBJECT_DATA_HASH_TABLE:
+ printf("Type: OBJECT_DATA_HASH_TABLE\n");
+ break;
- if (!f->authenticate)
- return 0;
+ case OBJECT_ENTRY_ARRAY:
+ printf("Type: OBJECT_ENTRY_ARRAY\n");
+ break;
- if (f->hmac_running)
- return 0;
+ case OBJECT_TAG:
+ printf("Type: OBJECT_TAG %llu\n",
+ (unsigned long long) le64toh(o->tag.seqnum));
+ break;
+ }
- /* 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));
+ if (o->object.flags & OBJECT_COMPRESSED)
+ printf("Flags: COMPRESSED\n");
- f->hmac_running = true;
+ if (p == le64toh(f->header->tail_object_offset))
+ p = 0;
+ else
+ p = p + ALIGN64(le64toh(o->object.size));
+ }
- return 0;
+ return;
+fail:
+ log_error("File corrupt");
}
-static int journal_file_get_epoch(JournalFile *f, uint64_t realtime, uint64_t *epoch) {
- uint64_t t;
+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);
- 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;
+ 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)));
- t = realtime - le64toh(f->fsprg_header->fsprg_start_usec);
- t = t / le64toh(f->fsprg_header->fsprg_interval_usec);
+ 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))));
- *epoch = t;
- return 0;
+ 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))));
}
-static int journal_file_need_evolve(JournalFile *f, uint64_t realtime) {
- uint64_t goal, epoch;
- int r;
- assert(f);
-
- if (!f->authenticate)
- return 0;
+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) {
- r = journal_file_get_epoch(f, realtime, &goal);
- if (r < 0)
- return r;
+ JournalFile *f;
+ int r;
+ bool newly_created = false;
- epoch = FSPRG_GetEpoch(fsprg_state(f));
- if (epoch > goal)
- return -ESTALE;
+ assert(fname);
- return epoch != goal;
-}
+ if ((flags & O_ACCMODE) != O_RDONLY &&
+ (flags & O_ACCMODE) != O_RDWR)
+ return -EINVAL;
-static int journal_file_evolve(JournalFile *f, uint64_t realtime) {
- uint64_t goal, epoch;
- int r;
+ if (!endswith(fname, ".journal"))
+ return -EINVAL;
- assert(f);
+ f = new0(JournalFile, 1);
+ if (!f)
+ return -ENOMEM;
- if (!f->authenticate)
- return 0;
+ f->fd = -1;
+ f->mode = mode;
- r = journal_file_get_epoch(f, realtime, &goal);
- if (r < 0)
- return r;
+ f->flags = flags;
+ f->prot = prot_from_flags(flags);
+ f->writable = (flags & O_ACCMODE) != O_RDONLY;
+ f->compress = compress;
+ f->authenticate = authenticate;
- 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);
+ 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;
+ }
+ }
- for (;;) {
- if (epoch > goal)
- return -ESTALE;
- if (epoch == goal)
- return 0;
+ f->path = strdup(fname);
+ if (!f->path) {
+ r = -ENOMEM;
+ goto fail;
+ }
- FSPRG_Evolve(fsprg_state(f));
- epoch = FSPRG_GetEpoch(fsprg_state(f));
+ f->fd = open(f->path, f->flags|O_CLOEXEC, f->mode);
+ if (f->fd < 0) {
+ r = -errno;
+ goto fail;
}
-}
-static int journal_file_maybe_append_tag(JournalFile *f, uint64_t realtime) {
- int r;
+ if (fstat(f->fd, &f->last_stat) < 0) {
+ r = -errno;
+ goto fail;
+ }
- assert(f);
+ if (f->last_stat.st_size == 0 && f->writable) {
+ newly_created = true;
- if (!f->authenticate)
- return 0;
+ /* 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_need_evolve(f, realtime);
- if (r <= 0)
- return 0;
+ r = journal_file_init_header(f, template);
+ if (r < 0)
+ goto fail;
- r = journal_file_append_tag(f);
- if (r < 0)
- return r;
+ if (fstat(f->fd, &f->last_stat) < 0) {
+ r = -errno;
+ goto fail;
+ }
+ }
- r = journal_file_evolve(f, realtime);
- if (r < 0)
- return r;
+ if (f->last_stat.st_size < (off_t) HEADER_SIZE_MIN) {
+ r = -EIO;
+ goto fail;
+ }
- r = journal_file_hmac_start(f);
- if (r < 0)
- return r;
+ 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;
+ goto fail;
+ }
- return 0;
-}
+ if (!newly_created) {
+ r = journal_file_verify_header(f);
+ if (r < 0)
+ goto fail;
+ }
-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);
-}
-
-static int write_uint64(int fd, uint64_t p) {
- ssize_t k;
-
- k = write(fd, &p, sizeof(p));
- if (k < 0)
- return -errno;
- if (k != sizeof(p))
- return -EIO;
-
- return 0;
-}
-
-static int contains_uint64(MMapCache *m, int fd, uint64_t n, uint64_t p) {
- uint64_t a, b;
- int r;
-
- assert(m);
- assert(fd >= 0);
-
- /* Bisection ... */
-
- a = 0; b = n;
- while (a < b) {
- uint64_t c, *z;
-
- c = (a + b) / 2;
-
- r = mmap_cache_get(m, fd, PROT_READ, 0, c * sizeof(uint64_t), sizeof(uint64_t), (void **) &z);
- if (r < 0)
- return r;
-
- if (*z == p)
- return 1;
-
- if (p < *z)
- b = c;
- else
- a = c;
- }
-
- return 0;
-}
-
-int journal_file_verify(JournalFile *f, const char *key) {
- int r;
- Object *o;
- uint64_t p = 0;
- 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, n_entry_arrays = 0;
- usec_t last_usec = 0;
- int data_fd = -1, entry_fd = -1, entry_array_fd = -1;
- char data_path[] = "/var/tmp/journal-data-XXXXXX",
- entry_path[] = "/var/tmp/journal-entry-XXXXXX",
- entry_array_path[] = "/var/tmp/journal-entry-array-XXXXXX";
-
- assert(f);
-
- data_fd = mkostemp(data_path, O_CLOEXEC);
- if (data_fd < 0) {
- log_error("Failed to create data file: %m");
- goto fail;
- }
- unlink(data_path);
-
- entry_fd = mkostemp(entry_path, O_CLOEXEC);
- if (entry_fd < 0) {
- log_error("Failed to create entry file: %m");
- goto fail;
- }
- unlink(entry_path);
-
- entry_array_fd = mkostemp(entry_array_path, O_CLOEXEC);
- if (entry_array_fd < 0) {
- log_error("Failed to create entry array file: %m");
- goto fail;
- }
- unlink(entry_array_path);
-
- /* 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((0x7FFF * 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) {
-
- r = write_uint64(entry_fd, p);
- if (r < 0)
- goto fail;
-
- 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) {
-
- r = write_uint64(entry_array_fd, p);
- if (r < 0)
- goto fail;
-
- 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;
- }
-
- n_entry_arrays++;
-
- } else if (o->object.type == OBJECT_DATA) {
-
- r = write_uint64(data_fd, p);
- if (r < 0)
- goto fail;
-
- 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;
- }
- } else if (o->object.type >= _OBJECT_TYPE_MAX)
- n_weird ++;
-
- 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. */
-
- p = le64toh(f->header->header_size);
- while (p != 0) {
- draw_progress(0x8000 + (0x7FFF * 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 (o->object.type == OBJECT_ENTRY_ARRAY) {
- uint64_t i = 0, n;
-
- if (le64toh(o->entry_array.next_entry_array_offset) != 0 &&
- !contains_uint64(f->mmap, entry_array_fd, n_entry_arrays, le64toh(o->entry_array.next_entry_array_offset))) {
- log_error("Entry array chains up to invalid next array at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
-
- n = journal_file_entry_array_n_items(o);
- for (i = 0; i < n; i++) {
- if (le64toh(o->entry_array.items[i]) != 0 &&
- !contains_uint64(f->mmap, entry_fd, n_entries, le64toh(o->entry_array.items[i]))) {
-
- log_error("Entry array points to invalid next array at %llu", (unsigned long long) p);
- r = -EBADMSG;
- goto fail;
- }
- }
-
- }
-
- 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 (p == le64toh(f->header->tail_object_offset))
- p = 0;
- else
- p = p + ALIGN64(le64toh(o->object.size));
- }
-
- flush_progress();
-
- mmap_cache_close_fd(f->mmap, data_fd);
- mmap_cache_close_fd(f->mmap, entry_fd);
- mmap_cache_close_fd(f->mmap, entry_array_fd);
-
- close_nointr_nofail(data_fd);
- close_nointr_nofail(entry_fd);
- close_nointr_nofail(entry_array_fd);
-
- return 0;
-
-fail:
- flush_progress();
-
- log_error("File corruption detected at %s:%llu (of %llu, %llu%%).",
- f->path,
- (unsigned long long) p,
- (unsigned long long) f->last_stat.st_size,
- (unsigned long long) (100 * p / f->last_stat.st_size));
-
- if (data_fd >= 0) {
- mmap_cache_close_fd(f->mmap, data_fd);
- close_nointr_nofail(data_fd);
- }
-
- if (entry_fd >= 0) {
- mmap_cache_close_fd(f->mmap, entry_fd);
- close_nointr_nofail(entry_fd);
- }
-
- if (entry_array_fd >= 0) {
- mmap_cache_close_fd(f->mmap, entry_array_fd);
- close_nointr_nofail(entry_array_fd);
- }
-
- 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;
- goto fail;
- }
-
- if (!newly_created) {
- r = journal_file_verify_header(f);
- if (r < 0)
- goto fail;
- }
-
- if (!newly_created && f->writable) {
- r = journal_file_load_fsprg(f);
- if (r < 0)
- goto fail;
- }
+ if (!newly_created && f->writable) {
+ r = journal_file_load_fsprg(f);
+ if (r < 0)
+ goto fail;
+ }
if (f->writable) {
if (metrics) {
return journal_file_open(fname, flags, mode, compress, authenticate, metrics, mmap, 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);
-}
-
-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;
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <unistd.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+
+#include "util.h"
+#include "macro.h"
+#include "journal-def.h"
+#include "journal-file.h"
+#include "journal-authenticate.h"
+#include "journal-verify.h"
+
+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);
+}
+
+static int write_uint64(int fd, uint64_t p) {
+ ssize_t k;
+
+ k = write(fd, &p, sizeof(p));
+ if (k < 0)
+ return -errno;
+ if (k != sizeof(p))
+ return -EIO;
+
+ return 0;
+}
+
+static int contains_uint64(MMapCache *m, int fd, uint64_t n, uint64_t p) {
+ uint64_t a, b;
+ int r;
+
+ assert(m);
+ assert(fd >= 0);
+
+ /* Bisection ... */
+
+ a = 0; b = n;
+ while (a < b) {
+ uint64_t c, *z;
+
+ c = (a + b) / 2;
+
+ r = mmap_cache_get(m, fd, PROT_READ, 0, c * sizeof(uint64_t), sizeof(uint64_t), (void **) &z);
+ if (r < 0)
+ return r;
+
+ if (*z == p)
+ return 1;
+
+ if (p < *z)
+ b = c;
+ else
+ a = c;
+ }
+
+ return 0;
+}
+
+int journal_file_verify(JournalFile *f, const char *key) {
+ int r;
+ Object *o;
+ uint64_t p = 0;
+ 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, n_entry_arrays = 0;
+ usec_t last_usec = 0;
+ int data_fd = -1, entry_fd = -1, entry_array_fd = -1;
+ char data_path[] = "/var/tmp/journal-data-XXXXXX",
+ entry_path[] = "/var/tmp/journal-entry-XXXXXX",
+ entry_array_path[] = "/var/tmp/journal-entry-array-XXXXXX";
+
+ assert(f);
+
+ data_fd = mkostemp(data_path, O_CLOEXEC);
+ if (data_fd < 0) {
+ log_error("Failed to create data file: %m");
+ goto fail;
+ }
+ unlink(data_path);
+
+ entry_fd = mkostemp(entry_path, O_CLOEXEC);
+ if (entry_fd < 0) {
+ log_error("Failed to create entry file: %m");
+ goto fail;
+ }
+ unlink(entry_path);
+
+ entry_array_fd = mkostemp(entry_array_path, O_CLOEXEC);
+ if (entry_array_fd < 0) {
+ log_error("Failed to create entry array file: %m");
+ goto fail;
+ }
+ unlink(entry_array_path);
+
+ /* 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((0x7FFF * 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) {
+
+ r = write_uint64(entry_fd, p);
+ if (r < 0)
+ goto fail;
+
+ 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) {
+
+ r = write_uint64(entry_array_fd, p);
+ if (r < 0)
+ goto fail;
+
+ 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;
+ }
+
+ n_entry_arrays++;
+
+ } else if (o->object.type == OBJECT_DATA) {
+
+ r = write_uint64(data_fd, p);
+ if (r < 0)
+ goto fail;
+
+ 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;
+ }
+ } else if (o->object.type >= _OBJECT_TYPE_MAX)
+ n_weird ++;
+
+ 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. */
+
+ p = le64toh(f->header->header_size);
+ while (p != 0) {
+ draw_progress(0x8000 + (0x7FFF * 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 (o->object.type == OBJECT_ENTRY_ARRAY) {
+ uint64_t i = 0, n;
+
+ if (le64toh(o->entry_array.next_entry_array_offset) != 0 &&
+ !contains_uint64(f->mmap, entry_array_fd, n_entry_arrays, le64toh(o->entry_array.next_entry_array_offset))) {
+ log_error("Entry array chains up to invalid next array at %llu", (unsigned long long) p);
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ n = journal_file_entry_array_n_items(o);
+ for (i = 0; i < n; i++) {
+ if (le64toh(o->entry_array.items[i]) != 0 &&
+ !contains_uint64(f->mmap, entry_fd, n_entries, le64toh(o->entry_array.items[i]))) {
+
+ log_error("Entry array points to invalid next array at %llu", (unsigned long long) p);
+ r = -EBADMSG;
+ goto fail;
+ }
+ }
+
+ }
+
+ 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 (p == le64toh(f->header->tail_object_offset))
+ p = 0;
+ else
+ p = p + ALIGN64(le64toh(o->object.size));
+ }
+
+ flush_progress();
+
+ mmap_cache_close_fd(f->mmap, data_fd);
+ mmap_cache_close_fd(f->mmap, entry_fd);
+ mmap_cache_close_fd(f->mmap, entry_array_fd);
+
+ close_nointr_nofail(data_fd);
+ close_nointr_nofail(entry_fd);
+ close_nointr_nofail(entry_array_fd);
+
+ return 0;
+
+fail:
+ flush_progress();
+
+ log_error("File corruption detected at %s:%llu (of %llu, %llu%%).",
+ f->path,
+ (unsigned long long) p,
+ (unsigned long long) f->last_stat.st_size,
+ (unsigned long long) (100 * p / f->last_stat.st_size));
+
+ if (data_fd >= 0) {
+ mmap_cache_close_fd(f->mmap, data_fd);
+ close_nointr_nofail(data_fd);
+ }
+
+ if (entry_fd >= 0) {
+ mmap_cache_close_fd(f->mmap, entry_fd);
+ close_nointr_nofail(entry_fd);
+ }
+
+ if (entry_array_fd >= 0) {
+ mmap_cache_close_fd(f->mmap, entry_array_fd);
+ close_nointr_nofail(entry_array_fd);
+ }
+
+ return r;
+}
projects / platform / upstream / systemd.git / commitdiff