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-rw-r--r--src/journal/journal-file.c190
1 files changed, 160 insertions, 30 deletions
diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c
index 709e15eceb..7beedb4a25 100644
--- a/src/journal/journal-file.c
+++ b/src/journal/journal-file.c
@@ -299,6 +299,8 @@ static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size)
if (r != 0)
return -r;
+ mmap_cache_close_fd_range(f->mmap, f->fd, old_size);
+
if (fstat(f->fd, &f->last_stat) < 0)
return -errno;
@@ -2335,18 +2337,86 @@ static void flush_progress(void) {
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, q = 0, e;
+ 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;
+ 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. */
@@ -2358,7 +2428,7 @@ int journal_file_verify(JournalFile *f, const char *key) {
p = le64toh(f->header->header_size);
while (p != 0) {
- draw_progress((65535ULL * p / le64toh(f->header->tail_object_offset)), &last_usec);
+ 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) {
@@ -2416,6 +2486,10 @@ int journal_file_verify(JournalFile *f, const char *key) {
} 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");
@@ -2458,6 +2532,10 @@ int journal_file_verify(JournalFile *f, const char *key) {
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);
@@ -2468,9 +2546,17 @@ int journal_file_verify(JournalFile *f, const char *key) {
found_main_entry_array = true;
}
- } else if (o->object.type == OBJECT_DATA)
+ 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)
+
+ } else if (o->object.type == OBJECT_FIELD)
n_fields++;
else if (o->object.type == OBJECT_DATA_HASH_TABLE) {
n_data_hash_tables++;
@@ -2502,14 +2588,8 @@ int journal_file_verify(JournalFile *f, const char *key) {
r = -EBADMSG;
goto fail;
}
- }
-
- if (o->object.type >= _OBJECT_TYPE_MAX)
+ } else if (o->object.type >= _OBJECT_TYPE_MAX)
n_weird ++;
- else {
- /* Write address to file... */
-
- }
if (p == le64toh(f->header->tail_object_offset))
p = 0;
@@ -2592,36 +2672,86 @@ int journal_file_verify(JournalFile *f, const char *key) {
/* Second iteration: we go through all objects again, this
* time verify all pointers. */
- /* q = le64toh(f->header->header_size); */
- /* while (q != 0) { */
- /* r = journal_file_move_to_object(f, -1, q, &o); */
- /* if (r < 0) { */
- /* log_error("Invalid object at %llu", (unsigned long long) q); */
- /* goto fail; */
- /* } */
+ 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;
+ }
+ }
+
+ }
- /* if (q == le64toh(f->header->tail_object_offset)) */
- /* q = 0; */
- /* else */
- /* q = q + ALIGN64(le64toh(o->object.size)); */
- /* } */
+ 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:
- e = p <= 0 ? q :
- q <= 0 ? p :
- MIN(p, q);
-
flush_progress();
log_error("File corruption detected at %s:%llu (of %llu, %llu%%).",
f->path,
- (unsigned long long) e,
+ (unsigned long long) p,
(unsigned long long) f->last_stat.st_size,
- (unsigned long long) (100 * e / 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;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 05:08:47 +0100