tdb2: rework io functions to return enum TDB_ERROR.
[ccan] / ccan / tdb2 / tdb.c
index 093d3d6d5199d747c17ac718e8d87ea547785282..ba5d37598e68d522366682fb1b59c8c90f8f5412 100644 (file)
@@ -429,6 +429,7 @@ static int replace_data(struct tdb_context *tdb,
                        bool growing)
 {
        tdb_off_t new_off;
+       enum TDB_ERROR ecode;
 
        /* Allocate a new record. */
        new_off = alloc(tdb, key.dsize, dbuf.dsize, h->h, TDB_USED_MAGIC,
@@ -450,12 +451,18 @@ static int replace_data(struct tdb_context *tdb,
        }
 
        new_off += sizeof(struct tdb_used_record);
-       if (tdb->methods->twrite(tdb, new_off, key.dptr, key.dsize) == -1)
+       ecode = tdb->methods->twrite(tdb, new_off, key.dptr, key.dsize);
+       if (ecode != TDB_SUCCESS) {
+               tdb->ecode = ecode;
                return -1;
+       }
 
        new_off += key.dsize;
-       if (tdb->methods->twrite(tdb, new_off, dbuf.dptr, dbuf.dsize) == -1)
+       ecode = tdb->methods->twrite(tdb, new_off, dbuf.dptr, dbuf.dsize);
+       if (ecode != TDB_SUCCESS) {
+               tdb->ecode = ecode;
                return -1;
+       }
 
        /* FIXME: tdb_increment_seqnum(tdb); */
        return 0;
@@ -469,6 +476,7 @@ int tdb_store(struct tdb_context *tdb,
        tdb_len_t old_room = 0;
        struct tdb_used_record rec;
        int ret;
+       enum TDB_ERROR ecode;
 
        off = find_and_lock(tdb, key, F_WRLCK, &h, &rec, NULL);
        if (unlikely(off == TDB_OFF_ERR))
@@ -490,10 +498,15 @@ int tdb_store(struct tdb_context *tdb,
                                                   key.dsize, dbuf.dsize,
                                                   &rec, h.h))
                                        goto fail;
-                               if (tdb->methods->twrite(tdb, off + sizeof(rec)
-                                                        + key.dsize,
-                                                        dbuf.dptr, dbuf.dsize))
+                               ecode = tdb->methods->twrite(tdb,
+                                                            off + sizeof(rec)
+                                                            + key.dsize,
+                                                            dbuf.dptr,
+                                                            dbuf.dsize);
+                               if (ecode != TDB_SUCCESS) {
+                                       tdb->ecode = ecode;
                                        goto fail;
+                               }
                                tdb_unlock_hashes(tdb, h.hlock_start,
                                                  h.hlock_range, F_WRLCK);
                                return 0;
@@ -528,6 +541,7 @@ int tdb_append(struct tdb_context *tdb,
        tdb_len_t old_room = 0, old_dlen;
        unsigned char *newdata;
        struct tdb_data new_dbuf;
+       enum TDB_ERROR ecode;
        int ret;
 
        off = find_and_lock(tdb, key, F_WRLCK, &h, &rec, NULL);
@@ -545,9 +559,12 @@ int tdb_append(struct tdb_context *tdb,
                                goto fail;
 
                        off += sizeof(rec) + key.dsize + old_dlen;
-                       if (tdb->methods->twrite(tdb, off, dbuf.dptr,
-                                                dbuf.dsize) == -1)
+                       ecode = tdb->methods->twrite(tdb, off, dbuf.dptr,
+                                                    dbuf.dsize);
+                       if (ecode != TDB_SUCCESS) {
+                               tdb->ecode = ecode;
                                goto fail;
+                       }
 
                        /* FIXME: tdb_increment_seqnum(tdb); */
                        tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
@@ -563,8 +580,10 @@ int tdb_append(struct tdb_context *tdb,
                                   (size_t)(key.dsize+old_dlen+dbuf.dsize));
                        goto fail;
                }
-               if (tdb->methods->tread(tdb, off + sizeof(rec) + key.dsize,
-                                       newdata, old_dlen) != 0) {
+               ecode = tdb->methods->tread(tdb, off + sizeof(rec) + key.dsize,
+                                           newdata, old_dlen);
+               if (ecode != TDB_SUCCESS) {
+                       tdb->ecode = ecode;
                        free(newdata);
                        goto fail;
                }