]> git.ozlabs.org Git - ccan/blobdiff - ccan/tdb2/check.c
tdb2: fix prototypes which return enum TDB_ERROR.
[ccan] / ccan / tdb2 / check.c
index b602d80d64777030aeb08fab853b1df9561561d2..a8b5b3d558c04e2943912d77b7b558e3cd609499 100644 (file)
@@ -72,7 +72,8 @@ static enum TDB_ERROR check_header(struct tdb_context *tdb, tdb_off_t *recovery,
        *features = hdr.features_offered;
        *recovery = hdr.recovery;
        if (*recovery) {
-               if (*recovery < sizeof(hdr) || *recovery > tdb->map_size) {
+               if (*recovery < sizeof(hdr)
+                   || *recovery > tdb->file->map_size) {
                        return tdb_logerr(tdb, TDB_ERR_CORRUPT, TDB_LOG_ERROR,
                                          "tdb_check:"
                                          " invalid recovery offset %zu",
@@ -93,7 +94,7 @@ static enum TDB_ERROR check_hash_tree(struct tdb_context *tdb,
                                      size_t *num_found,
                                      enum TDB_ERROR (*check)(TDB_DATA,
                                                              TDB_DATA, void *),
-                                     void *private_data);
+                                     void *data);
 
 static enum TDB_ERROR check_hash_chain(struct tdb_context *tdb,
                                       tdb_off_t off,
@@ -104,7 +105,7 @@ static enum TDB_ERROR check_hash_chain(struct tdb_context *tdb,
                                       enum TDB_ERROR (*check)(TDB_DATA,
                                                               TDB_DATA,
                                                               void *),
-                                      void *private_data)
+                                      void *data)
 {
        struct tdb_used_record rec;
        enum TDB_ERROR ecode;
@@ -140,7 +141,7 @@ static enum TDB_ERROR check_hash_chain(struct tdb_context *tdb,
 
        off += sizeof(rec);
        ecode = check_hash_tree(tdb, off, 0, hash, 64,
-                               used, num_used, num_found, check, private_data);
+                               used, num_used, num_found, check, data);
        if (ecode != TDB_SUCCESS) {
                return ecode;
        }
@@ -153,7 +154,7 @@ static enum TDB_ERROR check_hash_chain(struct tdb_context *tdb,
                return TDB_SUCCESS;
        (*num_found)++;
        return check_hash_chain(tdb, off, hash, used, num_used, num_found,
-                               check, private_data);
+                               check, data);
 }
 
 static enum TDB_ERROR check_hash_record(struct tdb_context *tdb,
@@ -166,14 +167,14 @@ static enum TDB_ERROR check_hash_record(struct tdb_context *tdb,
                                        enum TDB_ERROR (*check)(TDB_DATA,
                                                                TDB_DATA,
                                                                void *),
-                                       void *private_data)
+                                       void *data)
 {
        struct tdb_used_record rec;
        enum TDB_ERROR ecode;
 
        if (hprefix_bits >= 64)
                return check_hash_chain(tdb, off, hprefix, used, num_used,
-                                       num_found, check, private_data);
+                                       num_found, check, data);
 
        ecode = tdb_read_convert(tdb, off, &rec, sizeof(rec));
        if (ecode != TDB_SUCCESS) {
@@ -209,7 +210,7 @@ static enum TDB_ERROR check_hash_record(struct tdb_context *tdb,
        return check_hash_tree(tdb, off,
                               TDB_SUBLEVEL_HASH_BITS-TDB_HASH_GROUP_BITS,
                               hprefix, hprefix_bits,
-                              used, num_used, num_found, check, private_data);
+                              used, num_used, num_found, check, data);
 }
 
 static int off_cmp(const tdb_off_t *a, const tdb_off_t *b)
@@ -236,7 +237,7 @@ static enum TDB_ERROR check_hash_tree(struct tdb_context *tdb,
                                      size_t *num_found,
                                      enum TDB_ERROR (*check)(TDB_DATA,
                                                              TDB_DATA, void *),
-                                     void *private_data)
+                                     void *data)
 {
        unsigned int g, b;
        const tdb_off_t *hash;
@@ -317,7 +318,7 @@ static enum TDB_ERROR check_hash_tree(struct tdb_context *tdb,
                                                       + group_bits
                                                       + TDB_HASH_GROUP_BITS,
                                               used, num_used, num_found,
-                                              check, private_data);
+                                              check, data);
                                if (ecode != TDB_SUCCESS) {
                                        goto fail;
                                }
@@ -400,23 +401,27 @@ static enum TDB_ERROR check_hash_tree(struct tdb_context *tdb,
 
                check:
                        if (check) {
-                               TDB_DATA key, data;
-                               key.dsize = rec_key_length(&rec);
-                               data.dsize = rec_data_length(&rec);
-                               key.dptr = (void *)tdb_access_read(tdb,
-                                                  off + sizeof(rec),
-                                                  key.dsize + data.dsize,
-                                                  false);
-                               if (TDB_PTR_IS_ERR(key.dptr)) {
-                                       ecode = TDB_PTR_ERR(key.dptr);
+                               TDB_DATA k, d;
+                               const unsigned char *kptr;
+
+                               kptr = tdb_access_read(tdb,
+                                                      off + sizeof(rec),
+                                                      rec_key_length(&rec)
+                                                      + rec_data_length(&rec),
+                                                      false);
+                               if (TDB_PTR_IS_ERR(kptr)) {
+                                       ecode = TDB_PTR_ERR(kptr);
                                        goto fail;
                                }
-                               data.dptr = key.dptr + key.dsize;
-                               ecode = check(key, data, private_data);
+
+                               k = tdb_mkdata(kptr, rec_key_length(&rec));
+                               d = tdb_mkdata(kptr + k.dsize,
+                                              rec_data_length(&rec));
+                               ecode = check(k, d, data);
+                               tdb_access_release(tdb, kptr);
                                if (ecode != TDB_SUCCESS) {
                                        goto fail;
                                }
-                               tdb_access_release(tdb, key.dptr);
                        }
                }
        }
@@ -431,8 +436,8 @@ 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 *),
-                                void *private_data)
+                                enum TDB_ERROR (*check)(TDB_DATA, TDB_DATA, void *),
+                                void *data)
 {
        /* Free tables also show up as used. */
        size_t num_found = num_ftables;
@@ -441,7 +446,7 @@ static enum TDB_ERROR check_hash(struct tdb_context *tdb,
        ecode = check_hash_tree(tdb, offsetof(struct tdb_header, hashtable),
                                TDB_TOPLEVEL_HASH_BITS-TDB_HASH_GROUP_BITS,
                                0, 0, used, num_used, &num_found,
-                               check, private_data);
+                               check, data);
        if (ecode == TDB_SUCCESS) {
                if (num_found != num_used) {
                        ecode = tdb_logerr(tdb, TDB_ERR_CORRUPT, TDB_LOG_ERROR,
@@ -473,7 +478,7 @@ static enum TDB_ERROR check_free(struct tdb_context *tdb,
 
        }
 
-       ecode = tdb->methods->oob(tdb, off
+       ecode = tdb->tdb2.io->oob(tdb, off
                                  + frec_len(frec)
                                  + sizeof(struct tdb_used_record),
                                  false);
@@ -487,7 +492,7 @@ static enum TDB_ERROR check_free(struct tdb_context *tdb,
                                  (long long)off,
                                  bucket, size_to_bucket(frec_len(frec)));
        }
-       if (prev != frec_prev(frec)) {
+       if (prev && prev != frec_prev(frec)) {
                return tdb_logerr(tdb, TDB_ERR_CORRUPT, TDB_LOG_ERROR,
                                  "tdb_check: offset %llu bad prev"
                                  " (%llu vs %llu)",
@@ -523,7 +528,7 @@ static enum TDB_ERROR check_free_table(struct tdb_context *tdb,
        }
 
        for (i = 0; i < TDB_FREE_BUCKETS; i++) {
-               tdb_off_t off, prev = 0, *p;
+               tdb_off_t off, prev = 0, *p, first = 0;
                struct tdb_free_record f;
 
                h = bucket_off(ftable_off, i);
@@ -531,6 +536,10 @@ static enum TDB_ERROR check_free_table(struct tdb_context *tdb,
                        if (TDB_OFF_IS_ERR(off)) {
                                return off;
                        }
+                       if (!first) {
+                               off &= TDB_OFF_MASK;
+                               first = off;
+                       }
                        ecode = tdb_read_convert(tdb, off, &f, sizeof(f));
                        if (ecode != TDB_SUCCESS) {
                                return ecode;
@@ -554,6 +563,18 @@ static enum TDB_ERROR check_free_table(struct tdb_context *tdb,
                        (*num_found)++;
                        prev = off;
                }
+
+               if (first) {
+                       /* Now we can check first back pointer. */
+                       ecode = tdb_read_convert(tdb, first, &f, sizeof(f));
+                       if (ecode != TDB_SUCCESS) {
+                               return ecode;
+                       }
+                       ecode = check_free(tdb, first, &f, prev, ftable_num, i);
+                       if (ecode != TDB_SUCCESS) {
+                               return ecode;
+                       }
+               }
        }
        return TDB_SUCCESS;
 }
@@ -564,9 +585,9 @@ tdb_off_t dead_space(struct tdb_context *tdb, tdb_off_t off)
        size_t len;
        enum TDB_ERROR ecode;
 
-       for (len = 0; off + len < tdb->map_size; len++) {
+       for (len = 0; off + len < tdb->file->map_size; len++) {
                char c;
-               ecode = tdb->methods->tread(tdb, off, &c, 1);
+               ecode = tdb->tdb2.io->tread(tdb, off, &c, 1);
                if (ecode != TDB_SUCCESS) {
                        return ecode;
                }
@@ -586,7 +607,9 @@ static enum TDB_ERROR check_linear(struct tdb_context *tdb,
        enum TDB_ERROR ecode;
        bool found_recovery = false;
 
-       for (off = sizeof(struct tdb_header); off < tdb->map_size; off += len) {
+       for (off = sizeof(struct tdb_header);
+            off < tdb->file->map_size;
+            off += len) {
                union {
                        struct tdb_used_record u;
                        struct tdb_free_record f;
@@ -624,7 +647,7 @@ static enum TDB_ERROR check_linear(struct tdb_context *tdb,
                                tdb_logerr(tdb, TDB_SUCCESS, TDB_LOG_WARNING,
                                           "Dead space at %zu-%zu (of %zu)",
                                           (size_t)off, (size_t)(off + len),
-                                          (size_t)tdb->map_size);
+                                          (size_t)tdb->file->map_size);
                        }
                } else if (rec.r.magic == TDB_RECOVERY_MAGIC) {
                        ecode = tdb_read_convert(tdb, off, &rec, sizeof(rec.r));
@@ -646,7 +669,7 @@ static enum TDB_ERROR check_linear(struct tdb_context *tdb,
                                                  " length %zu",
                                                  (size_t)rec.r.len);
                        }
-                       if (rec.r.eof > tdb->map_size) {
+                       if (rec.r.eof > tdb->file->map_size) {
                                return tdb_logerr(tdb, TDB_ERR_CORRUPT,
                                                  TDB_LOG_ERROR,
                                                  "tdb_check: invalid old EOF"
@@ -656,7 +679,7 @@ static enum TDB_ERROR check_linear(struct tdb_context *tdb,
                        len = sizeof(rec.r) + rec.r.max_len;
                } else if (frec_magic(&rec.f) == TDB_FREE_MAGIC) {
                        len = sizeof(rec.u) + frec_len(&rec.f);
-                       if (off + len > tdb->map_size) {
+                       if (off + len > tdb->file->map_size) {
                                return tdb_logerr(tdb, TDB_ERR_CORRUPT,
                                                  TDB_LOG_ERROR,
                                                  "tdb_check: free overlength"
@@ -691,7 +714,7 @@ static enum TDB_ERROR check_linear(struct tdb_context *tdb,
                        extra = rec_extra_padding(&rec.u);
 
                        len = sizeof(rec.u) + klen + dlen + extra;
-                       if (off + len > tdb->map_size) {
+                       if (off + len > tdb->file->map_size) {
                                return tdb_logerr(tdb, TDB_ERR_CORRUPT,
                                                  TDB_LOG_ERROR,
                                                  "tdb_check: used overlength"
@@ -751,24 +774,29 @@ static enum TDB_ERROR check_linear(struct tdb_context *tdb,
 }
 
 enum TDB_ERROR tdb_check_(struct tdb_context *tdb,
-                         enum TDB_ERROR (*check)(TDB_DATA key, TDB_DATA data,
-                                                 void *private),
-                         void *private)
+                         enum TDB_ERROR (*check)(TDB_DATA, TDB_DATA, void *),
+                         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;
        uint64_t features;
        enum TDB_ERROR ecode;
 
+       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 ecode;
+               return tdb->last_error = ecode;
        }
 
        ecode = tdb_lock_expand(tdb, F_RDLCK);
        if (ecode != TDB_SUCCESS) {
                tdb_allrecord_unlock(tdb, F_RDLCK);
-               return ecode;
+               return tdb->last_error = ecode;
        }
 
        ecode = check_header(tdb, &recovery, &features);
@@ -794,7 +822,7 @@ enum TDB_ERROR tdb_check_(struct tdb_context *tdb,
        }
 
        /* FIXME: Check key uniqueness? */
-       ecode = check_hash(tdb, used, num_used, num_ftables, check, private);
+       ecode = check_hash(tdb, used, num_used, num_ftables, check, data);
        if (ecode != TDB_SUCCESS)
                goto out;
 
@@ -809,5 +837,5 @@ out:
        tdb_unlock_expand(tdb, F_RDLCK);
        free(fr);
        free(used);
-       return ecode;
+       return tdb->last_error = ecode;
 }