]> git.ozlabs.org Git - ccan/blobdiff - ccan/tdb2/check.c
ttxml: removed cruft from tests
[ccan] / ccan / tdb2 / check.c
index 6d846f414264404255eac5f67d0c93ea824b219b..ecd6c13c5394bc97e2b4e923cf3bdc2ca5110fc2 100644 (file)
@@ -31,11 +31,12 @@ static bool append(tdb_off_t **arr, size_t *num, tdb_off_t off)
 }
 
 static enum TDB_ERROR check_header(struct tdb_context *tdb, tdb_off_t *recovery,
-                                  uint64_t *features)
+                                  uint64_t *features, size_t *num_capabilities)
 {
        uint64_t hash_test;
        struct tdb_header hdr;
        enum TDB_ERROR ecode;
+       tdb_off_t off, next;
 
        ecode = tdb_read_convert(tdb, 0, &hdr, sizeof(hdr));
        if (ecode != TDB_SUCCESS) {
@@ -81,6 +82,24 @@ static enum TDB_ERROR check_header(struct tdb_context *tdb, tdb_off_t *recovery,
                }
        }
 
+       for (off = hdr.capabilities; off && ecode == TDB_SUCCESS; off = next) {
+               const struct tdb_capability *cap;
+               enum TDB_ERROR err;
+
+               cap = tdb_access_read(tdb, off, sizeof(*cap), true);
+               if (TDB_PTR_IS_ERR(cap)) {
+                       return TDB_PTR_ERR(cap);
+               }
+
+               /* All capabilities are unknown. */
+               err = unknown_capability(tdb, "tdb_check", cap->type);
+               next = cap->next;
+               tdb_access_release(tdb, cap);
+               if (err)
+                       return err;
+               (*num_capabilities)++;
+       }
+
        /* Don't check reserved: they *can* be used later. */
        return TDB_SUCCESS;
 }
@@ -148,7 +167,7 @@ static enum TDB_ERROR check_hash_chain(struct tdb_context *tdb,
 
        off = tdb_read_off(tdb, off + offsetof(struct tdb_chain, next));
        if (TDB_OFF_IS_ERR(off)) {
-               return off;
+               return TDB_OFF_TO_ERR(off);
        }
        if (off == 0)
                return TDB_SUCCESS;
@@ -435,12 +454,12 @@ fail:
 
 static enum TDB_ERROR check_hash(struct tdb_context *tdb,
                                 tdb_off_t used[],
-                                size_t num_used, size_t num_ftables,
-                                int (*check)(TDB_DATA, TDB_DATA, void *),
+                                size_t num_used, size_t num_other_used,
+                                enum TDB_ERROR (*check)(TDB_DATA, TDB_DATA, void *),
                                 void *data)
 {
-       /* Free tables also show up as used. */
-       size_t num_found = num_ftables;
+       /* Free tables and capabilities also show up as used. */
+       size_t num_found = num_other_used;
        enum TDB_ERROR ecode;
 
        ecode = check_hash_tree(tdb, offsetof(struct tdb_header, hashtable),
@@ -478,8 +497,8 @@ static enum TDB_ERROR check_free(struct tdb_context *tdb,
 
        }
 
-       ecode = tdb->tdb2.io->oob(tdb, off
-                                 frec_len(frec)
+       ecode = tdb->tdb2.io->oob(tdb, off,
+                                 frec_len(frec)
                                  + sizeof(struct tdb_used_record),
                                  false);
        if (ecode != TDB_SUCCESS) {
@@ -534,7 +553,7 @@ static enum TDB_ERROR check_free_table(struct tdb_context *tdb,
                h = bucket_off(ftable_off, i);
                for (off = tdb_read_off(tdb, h); off; off = f.next) {
                        if (TDB_OFF_IS_ERR(off)) {
-                               return off;
+                               return TDB_OFF_TO_ERR(off);
                        }
                        if (!first) {
                                off &= TDB_OFF_MASK;
@@ -589,7 +608,7 @@ tdb_off_t dead_space(struct tdb_context *tdb, tdb_off_t off)
                char c;
                ecode = tdb->tdb2.io->tread(tdb, off, &c, 1);
                if (ecode != TDB_SUCCESS) {
-                       return ecode;
+                       return TDB_ERR_TO_OFF(ecode);
                }
                if (c != 0 && c != 0x43)
                        break;
@@ -634,7 +653,7 @@ static enum TDB_ERROR check_linear(struct tdb_context *tdb,
                        } else {
                                len = dead_space(tdb, off);
                                if (TDB_OFF_IS_ERR(len)) {
-                                       return len;
+                                       return TDB_OFF_TO_ERR(len);
                                }
                                if (len < sizeof(rec.r)) {
                                        return tdb_logerr(tdb, TDB_ERR_CORRUPT,
@@ -698,7 +717,8 @@ static enum TDB_ERROR check_linear(struct tdb_context *tdb,
                } else if (rec_magic(&rec.u) == TDB_USED_MAGIC
                           || rec_magic(&rec.u) == TDB_CHAIN_MAGIC
                           || rec_magic(&rec.u) == TDB_HTABLE_MAGIC
-                          || rec_magic(&rec.u) == TDB_FTABLE_MAGIC) {
+                          || rec_magic(&rec.u) == TDB_FTABLE_MAGIC
+                          || rec_magic(&rec.u) == TDB_CAP_MAGIC) {
                        uint64_t klen, dlen, extra;
 
                        /* This record is used! */
@@ -734,7 +754,8 @@ static enum TDB_ERROR check_linear(struct tdb_context *tdb,
 
                        /* Check that records have correct 0 at end (but may
                         * not in future). */
-                       if (extra && !features) {
+                       if (extra && !features
+                           && rec_magic(&rec.u) != TDB_CAP_MAGIC) {
                                const char *p;
                                char c;
                                p = tdb_access_read(tdb, off + sizeof(rec.u)
@@ -778,10 +799,23 @@ enum TDB_ERROR tdb_check_(struct tdb_context *tdb,
                          void *data)
 {
        tdb_off_t *fr = NULL, *used = NULL, ft, recovery;
-       size_t num_free = 0, num_used = 0, num_found = 0, num_ftables = 0;
+       size_t num_free = 0, num_used = 0, num_found = 0, num_ftables = 0,
+               num_capabilities = 0;
        uint64_t features;
        enum TDB_ERROR ecode;
 
+       if (tdb->flags & TDB_CANT_CHECK) {
+               return tdb_logerr(tdb, TDB_SUCCESS, TDB_LOG_WARNING,
+                                 "tdb_check: database has unknown capability,"
+                                 " cannot check.");
+       }
+
+       if (tdb->flags & TDB_VERSION1) {
+               if (tdb1_check(tdb, check, data) == -1)
+                       return tdb->last_error;
+               return TDB_SUCCESS;
+       }
+
        ecode = tdb_allrecord_lock(tdb, F_RDLCK, TDB_LOCK_WAIT, false);
        if (ecode != TDB_SUCCESS) {
                return tdb->last_error = ecode;
@@ -793,7 +827,7 @@ enum TDB_ERROR tdb_check_(struct tdb_context *tdb,
                return tdb->last_error = ecode;
        }
 
-       ecode = check_header(tdb, &recovery, &features);
+       ecode = check_header(tdb, &recovery, &features, &num_capabilities);
        if (ecode != TDB_SUCCESS)
                goto out;
 
@@ -805,7 +839,7 @@ enum TDB_ERROR tdb_check_(struct tdb_context *tdb,
 
        for (ft = first_ftable(tdb); ft; ft = next_ftable(tdb, ft)) {
                if (TDB_OFF_IS_ERR(ft)) {
-                       ecode = ft;
+                       ecode = TDB_OFF_TO_ERR(ft);
                        goto out;
                }
                ecode = check_free_table(tdb, ft, num_ftables, fr, num_free,
@@ -816,7 +850,8 @@ enum TDB_ERROR tdb_check_(struct tdb_context *tdb,
        }
 
        /* FIXME: Check key uniqueness? */
-       ecode = check_hash(tdb, used, num_used, num_ftables, check, data);
+       ecode = check_hash(tdb, used, num_used, num_ftables + num_capabilities,
+                          check, data);
        if (ecode != TDB_SUCCESS)
                goto out;