]> git.ipfire.org Git - thirdparty/systemd.git/blobdiff - src/journal/journal-verify.c
dns-domain: add code for verifying validity of DNS-SD service names and types
[thirdparty/systemd.git] / src / journal / journal-verify.c
index 7e3c974b331124913b0295858b216997690f8b91..715847e0184c243db69f9921380913c30325d458 100644 (file)
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <unistd.h>
-#include <sys/mman.h>
 #include <fcntl.h>
 #include <stddef.h>
+#include <sys/mman.h>
+#include <unistd.h>
 
-#include "util.h"
-#include "macro.h"
+#include "alloc-util.h"
+#include "compress.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "journal-authenticate.h"
 #include "journal-def.h"
 #include "journal-file.h"
-#include "journal-authenticate.h"
 #include "journal-verify.h"
 #include "lookup3.h"
-#include "compress.h"
-#include "fsprg.h"
+#include "macro.h"
+#include "terminal-util.h"
+#include "util.h"
 
 static void draw_progress(uint64_t p, usec_t *last_usec) {
         unsigned n, i, j, k;
@@ -53,12 +56,12 @@ static void draw_progress(uint64_t p, usec_t *last_usec) {
         j = (n * (unsigned) p) / 65535ULL;
         k = n - j;
 
-        fputs("\r\x1B[?25l" ANSI_HIGHLIGHT_GREEN_ON, stdout);
+        fputs("\r\x1B[?25l" ANSI_HIGHLIGHT_GREEN, stdout);
 
         for (i = 0; i < j; i++)
                 fputs("\xe2\x96\x88", stdout);
 
-        fputs(ANSI_HIGHLIGHT_OFF, stdout);
+        fputs(ANSI_NORMAL, stdout);
 
         for (i = 0; i < k; i++)
                 fputs("\xe2\x96\x91", stdout);
@@ -69,6 +72,16 @@ static void draw_progress(uint64_t p, usec_t *last_usec) {
         fflush(stdout);
 }
 
+static uint64_t scale_progress(uint64_t scale, uint64_t p, uint64_t m) {
+
+        /* Calculates scale * p / m, but handles m == 0 safely, and saturates */
+
+        if (p >= m || m == 0)
+                return scale;
+
+        return scale * p / m;
+}
+
 static void flush_progress(void) {
         unsigned n, i;
 
@@ -113,8 +126,10 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
          * other objects. */
 
         if ((o->object.flags & OBJECT_COMPRESSED_XZ) &&
-            o->object.type != OBJECT_DATA)
+            o->object.type != OBJECT_DATA) {
+                error(offset, "Found compressed object that isn't of type DATA, which is not allowed.");
                 return -EBADMSG;
+        }
 
         switch (o->object.type) {
 
@@ -123,15 +138,15 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                 int compression, r;
 
                 if (le64toh(o->data.entry_offset) == 0)
-                        warning(offset, "unused data (entry_offset==0)");
+                        warning(offset, "Unused data (entry_offset==0)");
 
                 if ((le64toh(o->data.entry_offset) == 0) ^ (le64toh(o->data.n_entries) == 0)) {
-                        error(offset, "bad n_entries: %"PRIu64, o->data.n_entries);
+                        error(offset, "Bad n_entries: %"PRIu64, o->data.n_entries);
                         return -EBADMSG;
                 }
 
                 if (le64toh(o->object.size) - offsetof(DataObject, payload) <= 0) {
-                        error(offset, "bad object size (<= %zu): %"PRIu64,
+                        error(offset, "Bad object size (<= %zu): %"PRIu64,
                               offsetof(DataObject, payload),
                               le64toh(o->object.size));
                         return -EBADMSG;
@@ -159,7 +174,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                         h2 = hash64(o->data.payload, le64toh(o->object.size) - offsetof(Object, data.payload));
 
                 if (h1 != h2) {
-                        error(offset, "invalid hash (%08"PRIx64" vs. %08"PRIx64, h1, h2);
+                        error(offset, "Invalid hash (%08"PRIx64" vs. %08"PRIx64, h1, h2);
                         return -EBADMSG;
                 }
 
@@ -167,7 +182,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                     !VALID64(o->data.next_field_offset) ||
                     !VALID64(o->data.entry_offset) ||
                     !VALID64(o->data.entry_array_offset)) {
-                        error(offset, "invalid offset (next_hash_offset="OFSfmt", next_field_offset="OFSfmt", entry_offset="OFSfmt", entry_array_offset="OFSfmt,
+                        error(offset, "Invalid offset (next_hash_offset="OFSfmt", next_field_offset="OFSfmt", entry_offset="OFSfmt", entry_array_offset="OFSfmt,
                               o->data.next_hash_offset,
                               o->data.next_field_offset,
                               o->data.entry_offset,
@@ -181,7 +196,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
         case OBJECT_FIELD:
                 if (le64toh(o->object.size) - offsetof(FieldObject, payload) <= 0) {
                         error(offset,
-                              "bad field size (<= %zu): %"PRIu64,
+                              "Bad field size (<= %zu): %"PRIu64,
                               offsetof(FieldObject, payload),
                               le64toh(o->object.size));
                         return -EBADMSG;
@@ -190,7 +205,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                 if (!VALID64(o->field.next_hash_offset) ||
                     !VALID64(o->field.head_data_offset)) {
                         error(offset,
-                              "invalid offset (next_hash_offset="OFSfmt", head_data_offset="OFSfmt,
+                              "Invalid offset (next_hash_offset="OFSfmt", head_data_offset="OFSfmt,
                               o->field.next_hash_offset,
                               o->field.head_data_offset);
                         return -EBADMSG;
@@ -200,7 +215,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
         case OBJECT_ENTRY:
                 if ((le64toh(o->object.size) - offsetof(EntryObject, items)) % sizeof(EntryItem) != 0) {
                         error(offset,
-                              "bad entry size (<= %zu): %"PRIu64,
+                              "Bad entry size (<= %zu): %"PRIu64,
                               offsetof(EntryObject, items),
                               le64toh(o->object.size));
                         return -EBADMSG;
@@ -208,28 +223,28 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
 
                 if ((le64toh(o->object.size) - offsetof(EntryObject, items)) / sizeof(EntryItem) <= 0) {
                         error(offset,
-                              "invalid number items in entry: %"PRIu64,
+                              "Invalid number items in entry: %"PRIu64,
                               (le64toh(o->object.size) - offsetof(EntryObject, items)) / sizeof(EntryItem));
                         return -EBADMSG;
                 }
 
                 if (le64toh(o->entry.seqnum) <= 0) {
                         error(offset,
-                              "invalid entry seqnum: %"PRIx64,
+                              "Invalid entry seqnum: %"PRIx64,
                               le64toh(o->entry.seqnum));
                         return -EBADMSG;
                 }
 
                 if (!VALID_REALTIME(le64toh(o->entry.realtime))) {
                         error(offset,
-                              "invalid entry realtime timestamp: %"PRIu64,
+                              "Invalid entry realtime timestamp: %"PRIu64,
                               le64toh(o->entry.realtime));
                         return -EBADMSG;
                 }
 
                 if (!VALID_MONOTONIC(le64toh(o->entry.monotonic))) {
                         error(offset,
-                              "invalid entry monotonic timestamp: %"PRIu64,
+                              "Invalid entry monotonic timestamp: %"PRIu64,
                               le64toh(o->entry.monotonic));
                         return -EBADMSG;
                 }
@@ -238,7 +253,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                         if (o->entry.items[i].object_offset == 0 ||
                             !VALID64(o->entry.items[i].object_offset)) {
                                 error(offset,
-                                      "invalid entry item (%"PRIu64"/%"PRIu64" offset: "OFSfmt,
+                                      "Invalid entry item (%"PRIu64"/%"PRIu64" offset: "OFSfmt,
                                       i, journal_file_entry_n_items(o),
                                       o->entry.items[i].object_offset);
                                 return -EBADMSG;
@@ -252,7 +267,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                 if ((le64toh(o->object.size) - offsetof(HashTableObject, items)) % sizeof(HashItem) != 0 ||
                     (le64toh(o->object.size) - offsetof(HashTableObject, items)) / sizeof(HashItem) <= 0) {
                         error(offset,
-                              "invalid %s hash table size: %"PRIu64,
+                              "Invalid %s hash table size: %"PRIu64,
                               o->object.type == OBJECT_DATA_HASH_TABLE ? "data" : "field",
                               le64toh(o->object.size));
                         return -EBADMSG;
@@ -262,7 +277,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                         if (o->hash_table.items[i].head_hash_offset != 0 &&
                             !VALID64(le64toh(o->hash_table.items[i].head_hash_offset))) {
                                 error(offset,
-                                      "invalid %s hash table item (%"PRIu64"/%"PRIu64") head_hash_offset: "OFSfmt,
+                                      "Invalid %s hash table item (%"PRIu64"/%"PRIu64") head_hash_offset: "OFSfmt,
                                       o->object.type == OBJECT_DATA_HASH_TABLE ? "data" : "field",
                                       i, journal_file_hash_table_n_items(o),
                                       le64toh(o->hash_table.items[i].head_hash_offset));
@@ -271,7 +286,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                         if (o->hash_table.items[i].tail_hash_offset != 0 &&
                             !VALID64(le64toh(o->hash_table.items[i].tail_hash_offset))) {
                                 error(offset,
-                                      "invalid %s hash table item (%"PRIu64"/%"PRIu64") tail_hash_offset: "OFSfmt,
+                                      "Invalid %s hash table item (%"PRIu64"/%"PRIu64") tail_hash_offset: "OFSfmt,
                                       o->object.type == OBJECT_DATA_HASH_TABLE ? "data" : "field",
                                       i, journal_file_hash_table_n_items(o),
                                       le64toh(o->hash_table.items[i].tail_hash_offset));
@@ -281,7 +296,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                         if ((o->hash_table.items[i].head_hash_offset != 0) !=
                             (o->hash_table.items[i].tail_hash_offset != 0)) {
                                 error(offset,
-                                      "invalid %s hash table item (%"PRIu64"/%"PRIu64"): head_hash_offset="OFSfmt" tail_hash_offset="OFSfmt,
+                                      "Invalid %s hash table item (%"PRIu64"/%"PRIu64"): head_hash_offset="OFSfmt" tail_hash_offset="OFSfmt,
                                       o->object.type == OBJECT_DATA_HASH_TABLE ? "data" : "field",
                                       i, journal_file_hash_table_n_items(o),
                                       le64toh(o->hash_table.items[i].head_hash_offset),
@@ -296,14 +311,14 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                 if ((le64toh(o->object.size) - offsetof(EntryArrayObject, items)) % sizeof(le64_t) != 0 ||
                     (le64toh(o->object.size) - offsetof(EntryArrayObject, items)) / sizeof(le64_t) <= 0) {
                         error(offset,
-                              "invalid object entry array size: %"PRIu64,
+                              "Invalid object entry array size: %"PRIu64,
                               le64toh(o->object.size));
                         return -EBADMSG;
                 }
 
                 if (!VALID64(o->entry_array.next_entry_array_offset)) {
                         error(offset,
-                              "invalid object entry array next_entry_array_offset: "OFSfmt,
+                              "Invalid object entry array next_entry_array_offset: "OFSfmt,
                               o->entry_array.next_entry_array_offset);
                         return -EBADMSG;
                 }
@@ -312,7 +327,7 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
                         if (le64toh(o->entry_array.items[i]) != 0 &&
                             !VALID64(le64toh(o->entry_array.items[i]))) {
                                 error(offset,
-                                      "invalid object entry array item (%"PRIu64"/%"PRIu64"): "OFSfmt,
+                                      "Invalid object entry array item (%"PRIu64"/%"PRIu64"): "OFSfmt,
                                       i, journal_file_entry_array_n_items(o),
                                       le64toh(o->entry_array.items[i]));
                                 return -EBADMSG;
@@ -323,14 +338,14 @@ static int journal_file_object_verify(JournalFile *f, uint64_t offset, Object *o
         case OBJECT_TAG:
                 if (le64toh(o->object.size) != sizeof(TagObject)) {
                         error(offset,
-                              "invalid object tag size: %"PRIu64,
+                              "Invalid object tag size: %"PRIu64,
                               le64toh(o->object.size));
                         return -EBADMSG;
                 }
 
                 if (!VALID_EPOCH(o->tag.epoch)) {
                         error(offset,
-                              "invalid object tag epoch: %"PRIu64,
+                              "Invalid object tag epoch: %"PRIu64,
                               o->tag.epoch);
                         return -EBADMSG;
                 }
@@ -368,7 +383,7 @@ static int contains_uint64(MMapCache *m, int fd, uint64_t n, uint64_t p) {
 
                 c = (a + b) / 2;
 
-                r = mmap_cache_get(m, fd, PROT_READ|PROT_WRITE, 0, false, c * sizeof(uint64_t), sizeof(uint64_t), NULL, (void **) &z, NULL);
+                r = mmap_cache_get(m, fd, PROT_READ|PROT_WRITE, 0, false, c * sizeof(uint64_t), sizeof(uint64_t), NULL, (void **) &z);
                 if (r < 0)
                         return r;
 
@@ -403,8 +418,7 @@ static int entry_points_to_data(
         assert(entry_fd >= 0);
 
         if (!contains_uint64(f->mmap, entry_fd, n_entries, entry_p)) {
-                error(data_p,
-                      "data object references invalid entry at "OFSfmt, entry_p);
+                error(data_p, "Data object references invalid entry at "OFSfmt, entry_p);
                 return -EBADMSG;
         }
 
@@ -420,14 +434,13 @@ static int entry_points_to_data(
                 }
 
         if (!found) {
-                error(entry_p,
-                      "data object at "OFSfmt" not referenced by linked entry", data_p);
+                error(entry_p, "Data object at "OFSfmt" not referenced by linked entry", data_p);
                 return -EBADMSG;
         }
 
         /* Check if this entry is also in main entry array. Since the
          * main entry array has already been verified we can rely on
-         * its consistency.*/
+         * its consistency. */
 
         i = 0;
         n = le64toh(f->header->n_entries);
@@ -464,7 +477,7 @@ static int entry_points_to_data(
                                         x = z;
                         }
 
-                        error(entry_p, "entry object doesn't exist in main entry array");
+                        error(entry_p, "Entry object doesn't exist in main entry array");
                         return -EBADMSG;
                 }
 
@@ -494,9 +507,7 @@ static int verify_data(
 
         /* Entry array means at least two objects */
         if (a && n < 2) {
-                error(p,
-                      "entry array present (entry_array_offset="OFSfmt", but n_entries=%"PRIu64")",
-                      a, n);
+                error(p, "Entry array present (entry_array_offset="OFSfmt", but n_entries=%"PRIu64")", a, n);
                 return -EBADMSG;
         }
 
@@ -516,12 +527,12 @@ static int verify_data(
                 uint64_t next, m, j;
 
                 if (a == 0) {
-                        error(p, "array chain too short");
+                        error(p, "Array chain too short");
                         return -EBADMSG;
                 }
 
                 if (!contains_uint64(f->mmap, entry_array_fd, n_entry_arrays, a)) {
-                        error(p, "invalid array offset "OFSfmt, a);
+                        error(p, "Invalid array offset "OFSfmt, a);
                         return -EBADMSG;
                 }
 
@@ -531,8 +542,7 @@ static int verify_data(
 
                 next = le64toh(o->entry_array.next_entry_array_offset);
                 if (next != 0 && next <= a) {
-                        error(p, "array chain has cycle (jumps back from "OFSfmt" to "OFSfmt")",
-                              a, next);
+                        error(p, "Array chain has cycle (jumps back from "OFSfmt" to "OFSfmt")", a, next);
                         return -EBADMSG;
                 }
 
@@ -541,7 +551,7 @@ static int verify_data(
 
                         q = le64toh(o->entry_array.items[j]);
                         if (q <= last) {
-                                error(p, "data object's entry array not sorted");
+                                error(p, "Data object's entry array not sorted");
                                 return -EBADMSG;
                         }
                         last = q;
@@ -580,11 +590,18 @@ static int verify_hash_table(
         assert(last_usec);
 
         n = le64toh(f->header->data_hash_table_size) / sizeof(HashItem);
+        if (n <= 0)
+                return 0;
+
+        r = journal_file_map_data_hash_table(f);
+        if (r < 0)
+                return log_error_errno(r, "Failed to map data hash table: %m");
+
         for (i = 0; i < n; i++) {
                 uint64_t last = 0, p;
 
                 if (show_progress)
-                        draw_progress(0xC000 + (0x3FFF * i / n), last_usec);
+                        draw_progress(0xC000 + scale_progress(0x3FFF, i, n), last_usec);
 
                 p = le64toh(f->data_hash_table[i].head_hash_offset);
                 while (p != 0) {
@@ -592,8 +609,7 @@ static int verify_hash_table(
                         uint64_t next;
 
                         if (!contains_uint64(f->mmap, data_fd, n_data, p)) {
-                                error(p, "invalid data object at hash entry %"PRIu64" of %"PRIu64,
-                                      i, n);
+                                error(p, "Invalid data object at hash entry %"PRIu64" of %"PRIu64, i, n);
                                 return -EBADMSG;
                         }
 
@@ -603,14 +619,12 @@ static int verify_hash_table(
 
                         next = le64toh(o->data.next_hash_offset);
                         if (next != 0 && next <= p) {
-                                error(p, "hash chain has a cycle in hash entry %"PRIu64" of %"PRIu64,
-                                      i, n);
+                                error(p, "Hash chain has a cycle in hash entry %"PRIu64" of %"PRIu64, i, n);
                                 return -EBADMSG;
                         }
 
                         if (le64toh(o->data.hash) % n != i) {
-                                error(p, "hash value mismatch in hash entry %"PRIu64" of %"PRIu64,
-                                      i, n);
+                                error(p, "Hash value mismatch in hash entry %"PRIu64" of %"PRIu64, i, n);
                                 return -EBADMSG;
                         }
 
@@ -623,7 +637,7 @@ static int verify_hash_table(
                 }
 
                 if (last != le64toh(f->data_hash_table[i].tail_hash_offset)) {
-                        error(p, "tail hash pointer mismatch in hash table");
+                        error(p, "Tail hash pointer mismatch in hash table");
                         return -EBADMSG;
                 }
         }
@@ -637,6 +651,13 @@ static int data_object_in_hash_table(JournalFile *f, uint64_t hash, uint64_t p)
         assert(f);
 
         n = le64toh(f->header->data_hash_table_size) / sizeof(HashItem);
+        if (n <= 0)
+                return 0;
+
+        r = journal_file_map_data_hash_table(f);
+        if (r < 0)
+                return log_error_errno(r, "Failed to map data hash table: %m");
+
         h = hash % n;
 
         q = le64toh(f->data_hash_table[h].head_hash_offset);
@@ -677,16 +698,16 @@ static int verify_entry(
                 h = le64toh(o->entry.items[i].hash);
 
                 if (!contains_uint64(f->mmap, data_fd, n_data, q)) {
-                        error(p, "invalid data object of entry");
-                                return -EBADMSG;
-                        }
+                        error(p, "Invalid data object of entry");
+                        return -EBADMSG;
+                }
 
                 r = journal_file_move_to_object(f, OBJECT_DATA, q, &u);
                 if (r < 0)
                         return r;
 
                 if (le64toh(u->data.hash) != h) {
-                        error(p, "hash mismatch for data object of entry");
+                        error(p, "Hash mismatch for data object of entry");
                         return -EBADMSG;
                 }
 
@@ -694,7 +715,7 @@ static int verify_entry(
                 if (r < 0)
                         return r;
                 if (r == 0) {
-                        error(p, "data object missing from hash table");
+                        error(p, "Data object missing from hash table");
                         return -EBADMSG;
                 }
         }
@@ -726,15 +747,15 @@ static int verify_entry_array(
                 Object *o;
 
                 if (show_progress)
-                        draw_progress(0x8000 + (0x3FFF * i / n), last_usec);
+                        draw_progress(0x8000 + scale_progress(0x3FFF, i, n), last_usec);
 
                 if (a == 0) {
-                        error(a, "array chain too short at %"PRIu64" of %"PRIu64, i, n);
+                        error(a, "Array chain too short at %"PRIu64" of %"PRIu64, i, n);
                         return -EBADMSG;
                 }
 
                 if (!contains_uint64(f->mmap, entry_array_fd, n_entry_arrays, a)) {
-                        error(a, "invalid array %"PRIu64" of %"PRIu64, i, n);
+                        error(a, "Invalid array %"PRIu64" of %"PRIu64, i, n);
                         return -EBADMSG;
                 }
 
@@ -744,9 +765,7 @@ static int verify_entry_array(
 
                 next = le64toh(o->entry_array.next_entry_array_offset);
                 if (next != 0 && next <= a) {
-                        error(a,
-                              "array chain has cycle at %"PRIu64" of %"PRIu64" (jumps back from to "OFSfmt")",
-                              i, n, next);
+                        error(a, "Array chain has cycle at %"PRIu64" of %"PRIu64" (jumps back from to "OFSfmt")", i, n, next);
                         return -EBADMSG;
                 }
 
@@ -756,15 +775,13 @@ static int verify_entry_array(
 
                         p = le64toh(o->entry_array.items[j]);
                         if (p <= last) {
-                                error(a, "entry array not sorted at %"PRIu64" of %"PRIu64,
-                                      i, n);
+                                error(a, "Entry array not sorted at %"PRIu64" of %"PRIu64, i, n);
                                 return -EBADMSG;
                         }
                         last = p;
 
                         if (!contains_uint64(f->mmap, entry_fd, n_entries, p)) {
-                                error(a, "invalid array entry at %"PRIu64" of %"PRIu64,
-                                      i, n);
+                                error(a, "Invalid array entry at %"PRIu64" of %"PRIu64, i, n);
                                 return -EBADMSG;
                         }
 
@@ -818,41 +835,39 @@ int journal_file_verify(
                         return r;
                 }
 #else
-                return -ENOTSUP;
+                return -EOPNOTSUPP;
 #endif
         } else if (f->seal)
                 return -ENOKEY;
 
         data_fd = open_tmpfile("/var/tmp", O_RDWR | O_CLOEXEC);
         if (data_fd < 0) {
-                log_error_errno(errno, "Failed to create data file: %m");
-                r = -errno;
+                r = log_error_errno(data_fd, "Failed to create data file: %m");
                 goto fail;
         }
 
         entry_fd = open_tmpfile("/var/tmp", O_RDWR | O_CLOEXEC);
         if (entry_fd < 0) {
-                log_error_errno(errno, "Failed to create entry file: %m");
-                r = -errno;
+                r = log_error_errno(entry_fd, "Failed to create entry file: %m");
                 goto fail;
         }
 
         entry_array_fd = open_tmpfile("/var/tmp", O_RDWR | O_CLOEXEC);
         if (entry_array_fd < 0) {
-                log_error_errno(errno, "Failed to create entry array file: %m");
-                r = -errno;
+                r = log_error_errno(entry_array_fd,
+                                    "Failed to create entry array file: %m");
                 goto fail;
         }
 
         if (le32toh(f->header->compatible_flags) & ~HEADER_COMPATIBLE_SUPPORTED) {
                 log_error("Cannot verify file with unknown extensions.");
-                r = -ENOTSUP;
+                r = -EOPNOTSUPP;
                 goto fail;
         }
 
         for (i = 0; i < sizeof(f->header->reserved); i++)
                 if (f->header->reserved[i] != 0) {
-                        error(offsetof(Header, reserved[i]), "reserved field is non-zero");
+                        error(offsetof(Header, reserved[i]), "Reserved field is non-zero");
                         r = -EBADMSG;
                         goto fail;
                 }
@@ -861,36 +876,37 @@ int journal_file_verify(
          * superficial structure, headers, hashes. */
 
         p = le64toh(f->header->header_size);
-        while (p != 0) {
+        for (;;) {
+                /* Early exit if there are no objects in the file, at all */
+                if (le64toh(f->header->tail_object_offset) == 0)
+                        break;
+
                 if (show_progress)
-                        draw_progress(0x7FFF * p / le64toh(f->header->tail_object_offset), &last_usec);
+                        draw_progress(scale_progress(0x7FFF, p, le64toh(f->header->tail_object_offset)), &last_usec);
 
-                r = journal_file_move_to_object(f, -1, p, &o);
+                r = journal_file_move_to_object(f, OBJECT_UNUSED, p, &o);
                 if (r < 0) {
-                        error(p, "invalid object");
+                        error(p, "Invalid object");
                         goto fail;
                 }
 
                 if (p > le64toh(f->header->tail_object_offset)) {
-                        error(offsetof(Header, tail_object_offset), "invalid tail object pointer");
+                        error(offsetof(Header, tail_object_offset), "Invalid tail object pointer");
                         r = -EBADMSG;
                         goto fail;
                 }
 
-                if (p == le64toh(f->header->tail_object_offset))
-                        found_last = true;
-
                 n_objects ++;
 
                 r = journal_file_object_verify(f, p, o);
                 if (r < 0) {
-                        error(p, "invalid object contents: %s", strerror(-r));
+                        error(p, "Invalid object contents: %s", strerror(-r));
                         goto fail;
                 }
 
                 if ((o->object.flags & OBJECT_COMPRESSED_XZ) &&
                     (o->object.flags & OBJECT_COMPRESSED_LZ4)) {
-                        error(p, "objected with double compression");
+                        error(p, "Objected with double compression");
                         r = -EINVAL;
                         goto fail;
                 }
@@ -923,7 +939,7 @@ int journal_file_verify(
 
                 case OBJECT_ENTRY:
                         if (JOURNAL_HEADER_SEALED(f->header) && n_tags <= 0) {
-                                error(p, "first entry before first tag");
+                                error(p, "First entry before first tag");
                                 r = -EBADMSG;
                                 goto fail;
                         }
@@ -933,21 +949,21 @@ int journal_file_verify(
                                 goto fail;
 
                         if (le64toh(o->entry.realtime) < last_tag_realtime) {
-                                error(p, "older entry after newer tag");
+                                error(p, "Older entry after newer tag");
                                 r = -EBADMSG;
                                 goto fail;
                         }
 
                         if (!entry_seqnum_set &&
                             le64toh(o->entry.seqnum) != le64toh(f->header->head_entry_seqnum)) {
-                                error(p, "head entry sequence number incorrect");
+                                error(p, "Head entry sequence number incorrect");
                                 r = -EBADMSG;
                                 goto fail;
                         }
 
                         if (entry_seqnum_set &&
                             entry_seqnum >= le64toh(o->entry.seqnum)) {
-                                error(p, "entry sequence number out of synchronization");
+                                error(p, "Entry sequence number out of synchronization");
                                 r = -EBADMSG;
                                 goto fail;
                         }
@@ -958,7 +974,7 @@ int journal_file_verify(
                         if (entry_monotonic_set &&
                             sd_id128_equal(entry_boot_id, o->entry.boot_id) &&
                             entry_monotonic > le64toh(o->entry.monotonic)) {
-                                error(p, "entry timestamp out of synchronization");
+                                error(p, "Entry timestamp out of synchronization");
                                 r = -EBADMSG;
                                 goto fail;
                         }
@@ -969,7 +985,7 @@ int journal_file_verify(
 
                         if (!entry_realtime_set &&
                             le64toh(o->entry.realtime) != le64toh(f->header->head_entry_realtime)) {
-                                error(p, "head entry realtime timestamp incorrect");
+                                error(p, "Head entry realtime timestamp incorrect");
                                 r = -EBADMSG;
                                 goto fail;
                         }
@@ -982,7 +998,7 @@ int journal_file_verify(
 
                 case OBJECT_DATA_HASH_TABLE:
                         if (n_data_hash_tables > 1) {
-                                error(p, "more than one data hash table");
+                                error(p, "More than one data hash table");
                                 r = -EBADMSG;
                                 goto fail;
                         }
@@ -999,14 +1015,14 @@ int journal_file_verify(
 
                 case OBJECT_FIELD_HASH_TABLE:
                         if (n_field_hash_tables > 1) {
-                                error(p, "more than one field hash table");
+                                error(p, "More than one field hash table");
                                 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)) {
-                                error(p, "header fields for field hash table invalid");
+                                error(p, "Header fields for field hash table invalid");
                                 r = -EBADMSG;
                                 goto fail;
                         }
@@ -1021,7 +1037,7 @@ int journal_file_verify(
 
                         if (p == le64toh(f->header->entry_array_offset)) {
                                 if (found_main_entry_array) {
-                                        error(p, "more than one main entry array");
+                                        error(p, "More than one main entry array");
                                         r = -EBADMSG;
                                         goto fail;
                                 }
@@ -1034,19 +1050,19 @@ int journal_file_verify(
 
                 case OBJECT_TAG:
                         if (!JOURNAL_HEADER_SEALED(f->header)) {
-                                error(p, "tag object in file without sealing");
+                                error(p, "Tag object in file without sealing");
                                 r = -EBADMSG;
                                 goto fail;
                         }
 
                         if (le64toh(o->tag.seqnum) != n_tags + 1) {
-                                error(p, "tag sequence number out of synchronization");
+                                error(p, "Tag sequence number out of synchronization");
                                 r = -EBADMSG;
                                 goto fail;
                         }
 
                         if (le64toh(o->tag.epoch) < last_epoch) {
-                                error(p, "epoch sequence out of synchronization");
+                                error(p, "Epoch sequence out of synchronization");
                                 r = -EBADMSG;
                                 goto fail;
                         }
@@ -1055,7 +1071,7 @@ int journal_file_verify(
                         if (f->seal) {
                                 uint64_t q, rt;
 
-                                debug(p, "checking tag %"PRIu64"...", le64toh(o->tag.seqnum));
+                                debug(p, "Checking tag %"PRIu64"...", le64toh(o->tag.seqnum));
 
                                 rt = f->fss_start_usec + o->tag.epoch * f->fss_interval_usec;
                                 if (entry_realtime_set && entry_realtime >= rt + f->fss_interval_usec) {
@@ -1085,11 +1101,11 @@ int journal_file_verify(
                                         q = last_tag;
 
                                 while (q <= p) {
-                                        r = journal_file_move_to_object(f, -1, q, &o);
+                                        r = journal_file_move_to_object(f, OBJECT_UNUSED, q, &o);
                                         if (r < 0)
                                                 goto fail;
 
-                                        r = journal_file_hmac_put_object(f, -1, o, q);
+                                        r = journal_file_hmac_put_object(f, OBJECT_UNUSED, o, q);
                                         if (r < 0)
                                                 goto fail;
 
@@ -1097,12 +1113,12 @@ int journal_file_verify(
                                 }
 
                                 /* Position might have changed, let's reposition things */
-                                r = journal_file_move_to_object(f, -1, p, &o);
+                                r = journal_file_move_to_object(f, OBJECT_UNUSED, p, &o);
                                 if (r < 0)
                                         goto fail;
 
                                 if (memcmp(o->tag.tag, gcry_md_read(f->hmac, 0), TAG_LENGTH) != 0) {
-                                        error(p, "tag failed verification");
+                                        error(p, "Tag failed verification");
                                         r = -EBADMSG;
                                         goto fail;
                                 }
@@ -1124,79 +1140,69 @@ int journal_file_verify(
                         n_weird ++;
                 }
 
-                if (p == le64toh(f->header->tail_object_offset))
-                        p = 0;
-                else
-                        p = p + ALIGN64(le64toh(o->object.size));
-        }
+                if (p == le64toh(f->header->tail_object_offset)) {
+                        found_last = true;
+                        break;
+                }
 
-        if (!found_last) {
-                error(le64toh(f->header->tail_object_offset), "tail object pointer dead");
+                p = p + ALIGN64(le64toh(o->object.size));
+        };
+
+        if (!found_last && le64toh(f->header->tail_object_offset) != 0) {
+                error(le64toh(f->header->tail_object_offset), "Tail object pointer dead");
                 r = -EBADMSG;
                 goto fail;
         }
 
         if (n_objects != le64toh(f->header->n_objects)) {
-                error(offsetof(Header, n_objects), "object number mismatch");
+                error(offsetof(Header, n_objects), "Object number mismatch");
                 r = -EBADMSG;
                 goto fail;
         }
 
         if (n_entries != le64toh(f->header->n_entries)) {
-                error(offsetof(Header, n_entries), "entry number mismatch");
+                error(offsetof(Header, n_entries), "Entry number mismatch");
                 r = -EBADMSG;
                 goto fail;
         }
 
         if (JOURNAL_HEADER_CONTAINS(f->header, n_data) &&
             n_data != le64toh(f->header->n_data)) {
-                error(offsetof(Header, n_data), "data number mismatch");
+                error(offsetof(Header, n_data), "Data number mismatch");
                 r = -EBADMSG;
                 goto fail;
         }
 
         if (JOURNAL_HEADER_CONTAINS(f->header, n_fields) &&
             n_fields != le64toh(f->header->n_fields)) {
-                error(offsetof(Header, n_fields), "field number mismatch");
+                error(offsetof(Header, n_fields), "Field number mismatch");
                 r = -EBADMSG;
                 goto fail;
         }
 
         if (JOURNAL_HEADER_CONTAINS(f->header, n_tags) &&
             n_tags != le64toh(f->header->n_tags)) {
-                error(offsetof(Header, n_tags), "tag number mismatch");
+                error(offsetof(Header, n_tags), "Tag number mismatch");
                 r = -EBADMSG;
                 goto fail;
         }
 
         if (JOURNAL_HEADER_CONTAINS(f->header, n_entry_arrays) &&
             n_entry_arrays != le64toh(f->header->n_entry_arrays)) {
-                error(offsetof(Header, n_entry_arrays), "entry array number mismatch");
-                r = -EBADMSG;
-                goto fail;
-        }
-
-        if (n_data_hash_tables != 1) {
-                error(0, "missing data hash table");
-                r = -EBADMSG;
-                goto fail;
-        }
-
-        if (n_field_hash_tables != 1) {
-                error(0, "missing field hash table");
+                error(offsetof(Header, n_entry_arrays), "Entry array number mismatch");
                 r = -EBADMSG;
                 goto fail;
         }
 
-        if (!found_main_entry_array) {
-                error(0, "missing entry array");
+        if (!found_main_entry_array && le64toh(f->header->entry_array_offset) != 0) {
+                error(0, "Missing entry array");
                 r = -EBADMSG;
                 goto fail;
         }
 
         if (entry_seqnum_set &&
             entry_seqnum != le64toh(f->header->tail_entry_seqnum)) {
-                error(offsetof(Header, tail_entry_seqnum), "invalid tail seqnum");
+                error(offsetof(Header, tail_entry_seqnum), "Invalid tail seqnum");
                 r = -EBADMSG;
                 goto fail;
         }
@@ -1204,13 +1210,13 @@ int journal_file_verify(
         if (entry_monotonic_set &&
             (!sd_id128_equal(entry_boot_id, f->header->boot_id) ||
              entry_monotonic != le64toh(f->header->tail_entry_monotonic))) {
-                error(0, "invalid tail monotonic timestamp");
+                error(0, "Invalid tail monotonic timestamp");
                 r = -EBADMSG;
                 goto fail;
         }
 
         if (entry_realtime_set && entry_realtime != le64toh(f->header->tail_entry_realtime)) {
-                error(0, "invalid tail realtime timestamp");
+                error(0, "Invalid tail realtime timestamp");
                 r = -EBADMSG;
                 goto fail;
         }