X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Ftdb2%2Ftdb1_transaction.c;h=fa6ffda379d2d706165c8c9a534168b5cdfbe56c;hp=165fd7f972f5b74dd0d1de0271c97ec9e502ebbe;hb=c8f6f8c2dea76042f74c02eff048847e62adcca6;hpb=919937354a331bb964564a11b5a5b80403ff8db9 diff --git a/ccan/tdb2/tdb1_transaction.c b/ccan/tdb2/tdb1_transaction.c index 165fd7f9..fa6ffda3 100644 --- a/ccan/tdb2/tdb1_transaction.c +++ b/ccan/tdb2/tdb1_transaction.c @@ -81,25 +81,16 @@ usual. This allows for smooth crash recovery with no administrator intervention. - - if TDB1_NOSYNC is passed to flags in tdb1_open then transactions are + - if TDB_NOSYNC is passed to flags in tdb1_open then transactions are still available, but no transaction recovery area is used and no fsync/msync calls are made. - - if TDB1_ALLOW_NESTING is passed to flags in tdb open, or added using + - if TDB_ALLOW_NESTING is passed to flags in tdb open, or added using tdb1_add_flags() transaction nesting is enabled. - It resets the TDB1_DISALLOW_NESTING flag, as both cannot be used together. - The default is that transaction nesting is allowed. - Note: this default may change in future versions of tdb. + The default is that transaction nesting is NOT allowed. Beware. when transactions are nested a transaction successfully completed with tdb1_transaction_commit() can be silently unrolled later. - - - if TDB1_DISALLOW_NESTING is passed to flags in tdb open, or added using - tdb1_add_flags() transaction nesting is disabled. - It resets the TDB1_ALLOW_NESTING flag, as both cannot be used together. - An attempt create a nested transaction will fail with TDB_ERR_EINVAL. - The default is that transaction nesting is allowed. - Note: this default may change in future versions of tdb. */ @@ -147,14 +138,14 @@ struct tdb1_transaction { read while in a transaction. We need to check first if the data is in our list of transaction elements, then if not do a real read */ -static int transaction1_read(struct tdb1_context *tdb, tdb1_off_t off, void *buf, +static int transaction1_read(struct tdb_context *tdb, tdb1_off_t off, void *buf, tdb1_len_t len, int cv) { uint32_t blk; /* break it down into block sized ops */ - while (len + (off % tdb->transaction->block_size) > tdb->transaction->block_size) { - tdb1_len_t len2 = tdb->transaction->block_size - (off % tdb->transaction->block_size); + while (len + (off % tdb->tdb1.transaction->block_size) > tdb->tdb1.transaction->block_size) { + tdb1_len_t len2 = tdb->tdb1.transaction->block_size - (off % tdb->tdb1.transaction->block_size); if (transaction1_read(tdb, off, buf, len2, cv) != 0) { return -1; } @@ -167,27 +158,27 @@ static int transaction1_read(struct tdb1_context *tdb, tdb1_off_t off, void *buf return 0; } - blk = off / tdb->transaction->block_size; + blk = off / tdb->tdb1.transaction->block_size; /* see if we have it in the block list */ - if (tdb->transaction->num_blocks <= blk || - tdb->transaction->blocks[blk] == NULL) { + if (tdb->tdb1.transaction->num_blocks <= blk || + tdb->tdb1.transaction->blocks[blk] == NULL) { /* nope, do a real read */ - if (tdb->transaction->io_methods->tdb1_read(tdb, off, buf, len, cv) != 0) { + if (tdb->tdb1.transaction->io_methods->tdb1_read(tdb, off, buf, len, cv) != 0) { goto fail; } return 0; } /* it is in the block list. Now check for the last block */ - if (blk == tdb->transaction->num_blocks-1) { - if (len > tdb->transaction->last_block_size) { + if (blk == tdb->tdb1.transaction->num_blocks-1) { + if (len > tdb->tdb1.transaction->last_block_size) { goto fail; } } /* now copy it out of this block */ - memcpy(buf, tdb->transaction->blocks[blk] + (off % tdb->transaction->block_size), len); + memcpy(buf, tdb->tdb1.transaction->blocks[blk] + (off % tdb->tdb1.transaction->block_size), len); if (cv) { tdb1_convert(buf, len); } @@ -197,7 +188,7 @@ fail: tdb->last_error = tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR, "transaction_read: failed at off=%d len=%d", off, len); - tdb->transaction->transaction_error = 1; + tdb->tdb1.transaction->transaction_error = 1; return -1; } @@ -205,17 +196,17 @@ fail: /* write while in a transaction */ -static int transaction1_write(struct tdb1_context *tdb, tdb1_off_t off, +static int transaction1_write(struct tdb_context *tdb, tdb1_off_t off, const void *buf, tdb1_len_t len) { uint32_t blk; /* Only a commit is allowed on a prepared transaction */ - if (tdb->transaction->prepared) { + if (tdb->tdb1.transaction->prepared) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, TDB_LOG_USE_ERROR, "transaction_write: transaction already" " prepared, write not allowed"); - tdb->transaction->transaction_error = 1; + tdb->tdb1.transaction->transaction_error = 1; return -1; } @@ -224,12 +215,12 @@ static int transaction1_write(struct tdb1_context *tdb, tdb1_off_t off, if (len == sizeof(tdb1_off_t) && off >= TDB1_FREELIST_TOP && off < TDB1_FREELIST_TOP+TDB1_HASHTABLE_SIZE(tdb)) { uint32_t chain = (off-TDB1_FREELIST_TOP) / sizeof(tdb1_off_t); - memcpy(&tdb->transaction->hash_heads[chain], buf, len); + memcpy(&tdb->tdb1.transaction->hash_heads[chain], buf, len); } /* break it up into block sized chunks */ - while (len + (off % tdb->transaction->block_size) > tdb->transaction->block_size) { - tdb1_len_t len2 = tdb->transaction->block_size - (off % tdb->transaction->block_size); + while (len + (off % tdb->tdb1.transaction->block_size) > tdb->tdb1.transaction->block_size) { + tdb1_len_t len2 = tdb->tdb1.transaction->block_size - (off % tdb->tdb1.transaction->block_size); if (transaction1_write(tdb, off, buf, len2) != 0) { return -1; } @@ -244,66 +235,66 @@ static int transaction1_write(struct tdb1_context *tdb, tdb1_off_t off, return 0; } - blk = off / tdb->transaction->block_size; - off = off % tdb->transaction->block_size; + blk = off / tdb->tdb1.transaction->block_size; + off = off % tdb->tdb1.transaction->block_size; - if (tdb->transaction->num_blocks <= blk) { + if (tdb->tdb1.transaction->num_blocks <= blk) { uint8_t **new_blocks; /* expand the blocks array */ - if (tdb->transaction->blocks == NULL) { + if (tdb->tdb1.transaction->blocks == NULL) { new_blocks = (uint8_t **)malloc( (blk+1)*sizeof(uint8_t *)); } else { new_blocks = (uint8_t **)realloc( - tdb->transaction->blocks, + tdb->tdb1.transaction->blocks, (blk+1)*sizeof(uint8_t *)); } if (new_blocks == NULL) { tdb->last_error = TDB_ERR_OOM; goto fail; } - memset(&new_blocks[tdb->transaction->num_blocks], 0, - (1+(blk - tdb->transaction->num_blocks))*sizeof(uint8_t *)); - tdb->transaction->blocks = new_blocks; - tdb->transaction->num_blocks = blk+1; - tdb->transaction->last_block_size = 0; + memset(&new_blocks[tdb->tdb1.transaction->num_blocks], 0, + (1+(blk - tdb->tdb1.transaction->num_blocks))*sizeof(uint8_t *)); + tdb->tdb1.transaction->blocks = new_blocks; + tdb->tdb1.transaction->num_blocks = blk+1; + tdb->tdb1.transaction->last_block_size = 0; } /* allocate and fill a block? */ - if (tdb->transaction->blocks[blk] == NULL) { - tdb->transaction->blocks[blk] = (uint8_t *)calloc(tdb->transaction->block_size, 1); - if (tdb->transaction->blocks[blk] == NULL) { + if (tdb->tdb1.transaction->blocks[blk] == NULL) { + tdb->tdb1.transaction->blocks[blk] = (uint8_t *)calloc(tdb->tdb1.transaction->block_size, 1); + if (tdb->tdb1.transaction->blocks[blk] == NULL) { tdb->last_error = TDB_ERR_OOM; - tdb->transaction->transaction_error = 1; + tdb->tdb1.transaction->transaction_error = 1; return -1; } - if (tdb->transaction->old_map_size > blk * tdb->transaction->block_size) { - tdb1_len_t len2 = tdb->transaction->block_size; - if (len2 + (blk * tdb->transaction->block_size) > tdb->transaction->old_map_size) { - len2 = tdb->transaction->old_map_size - (blk * tdb->transaction->block_size); + if (tdb->tdb1.transaction->old_map_size > blk * tdb->tdb1.transaction->block_size) { + tdb1_len_t len2 = tdb->tdb1.transaction->block_size; + if (len2 + (blk * tdb->tdb1.transaction->block_size) > tdb->tdb1.transaction->old_map_size) { + len2 = tdb->tdb1.transaction->old_map_size - (blk * tdb->tdb1.transaction->block_size); } - if (tdb->transaction->io_methods->tdb1_read(tdb, blk * tdb->transaction->block_size, - tdb->transaction->blocks[blk], + if (tdb->tdb1.transaction->io_methods->tdb1_read(tdb, blk * tdb->tdb1.transaction->block_size, + tdb->tdb1.transaction->blocks[blk], len2, 0) != 0) { - SAFE_FREE(tdb->transaction->blocks[blk]); + SAFE_FREE(tdb->tdb1.transaction->blocks[blk]); tdb->last_error = TDB_ERR_IO; goto fail; } - if (blk == tdb->transaction->num_blocks-1) { - tdb->transaction->last_block_size = len2; + if (blk == tdb->tdb1.transaction->num_blocks-1) { + tdb->tdb1.transaction->last_block_size = len2; } } } /* overwrite part of an existing block */ if (buf == NULL) { - memset(tdb->transaction->blocks[blk] + off, 0, len); + memset(tdb->tdb1.transaction->blocks[blk] + off, 0, len); } else { - memcpy(tdb->transaction->blocks[blk] + off, buf, len); + memcpy(tdb->tdb1.transaction->blocks[blk] + off, buf, len); } - if (blk == tdb->transaction->num_blocks-1) { - if (len + off > tdb->transaction->last_block_size) { - tdb->transaction->last_block_size = len + off; + if (blk == tdb->tdb1.transaction->num_blocks-1) { + if (len + off > tdb->tdb1.transaction->last_block_size) { + tdb->tdb1.transaction->last_block_size = len + off; } } @@ -312,8 +303,8 @@ static int transaction1_write(struct tdb1_context *tdb, tdb1_off_t off, fail: tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "transaction_write: failed at off=%d len=%d", - (blk*tdb->transaction->block_size) + off, len); - tdb->transaction->transaction_error = 1; + (blk*tdb->tdb1.transaction->block_size) + off, len); + tdb->tdb1.transaction->transaction_error = 1; return -1; } @@ -322,14 +313,14 @@ fail: write while in a transaction - this varient never expands the transaction blocks, it only updates existing blocks. This means it cannot change the recovery size */ -static int transaction1_write_existing(struct tdb1_context *tdb, tdb1_off_t off, +static int transaction1_write_existing(struct tdb_context *tdb, tdb1_off_t off, const void *buf, tdb1_len_t len) { uint32_t blk; /* break it up into block sized chunks */ - while (len + (off % tdb->transaction->block_size) > tdb->transaction->block_size) { - tdb1_len_t len2 = tdb->transaction->block_size - (off % tdb->transaction->block_size); + while (len + (off % tdb->tdb1.transaction->block_size) > tdb->tdb1.transaction->block_size) { + tdb1_len_t len2 = tdb->tdb1.transaction->block_size - (off % tdb->tdb1.transaction->block_size); if (transaction1_write_existing(tdb, off, buf, len2) != 0) { return -1; } @@ -344,24 +335,24 @@ static int transaction1_write_existing(struct tdb1_context *tdb, tdb1_off_t off, return 0; } - blk = off / tdb->transaction->block_size; - off = off % tdb->transaction->block_size; + blk = off / tdb->tdb1.transaction->block_size; + off = off % tdb->tdb1.transaction->block_size; - if (tdb->transaction->num_blocks <= blk || - tdb->transaction->blocks[blk] == NULL) { + if (tdb->tdb1.transaction->num_blocks <= blk || + tdb->tdb1.transaction->blocks[blk] == NULL) { return 0; } - if (blk == tdb->transaction->num_blocks-1 && - off + len > tdb->transaction->last_block_size) { - if (off >= tdb->transaction->last_block_size) { + if (blk == tdb->tdb1.transaction->num_blocks-1 && + off + len > tdb->tdb1.transaction->last_block_size) { + if (off >= tdb->tdb1.transaction->last_block_size) { return 0; } - len = tdb->transaction->last_block_size - off; + len = tdb->tdb1.transaction->last_block_size - off; } /* overwrite part of an existing block */ - memcpy(tdb->transaction->blocks[blk] + off, buf, len); + memcpy(tdb->tdb1.transaction->blocks[blk] + off, buf, len); return 0; } @@ -370,12 +361,12 @@ static int transaction1_write_existing(struct tdb1_context *tdb, tdb1_off_t off, /* accelerated hash chain head search, using the cached hash heads */ -static void transaction1_next_hash_chain(struct tdb1_context *tdb, uint32_t *chain) +static void transaction1_next_hash_chain(struct tdb_context *tdb, uint32_t *chain) { uint32_t h = *chain; - for (;h < tdb->header.hash_size;h++) { + for (;h < tdb->tdb1.header.hash_size;h++) { /* the +1 takes account of the freelist */ - if (0 != tdb->transaction->hash_heads[h+1]) { + if (0 != tdb->tdb1.transaction->hash_heads[h+1]) { break; } } @@ -385,9 +376,9 @@ static void transaction1_next_hash_chain(struct tdb1_context *tdb, uint32_t *cha /* out of bounds check during a transaction */ -static int transaction1_oob(struct tdb1_context *tdb, tdb1_off_t len, int probe) +static int transaction1_oob(struct tdb_context *tdb, tdb1_off_t len, int probe) { - if (len <= tdb->map_size) { + if (len <= tdb->file->map_size) { return 0; } tdb->last_error = TDB_ERR_IO; @@ -397,7 +388,7 @@ static int transaction1_oob(struct tdb1_context *tdb, tdb1_off_t len, int probe) /* transaction version of tdb1_expand(). */ -static int transaction1_expand_file(struct tdb1_context *tdb, tdb1_off_t size, +static int transaction1_expand_file(struct tdb_context *tdb, tdb1_off_t size, tdb1_off_t addition) { /* add a write to the transaction elements, so subsequent @@ -406,7 +397,7 @@ static int transaction1_expand_file(struct tdb1_context *tdb, tdb1_off_t size, return -1; } - tdb->transaction->expanded = true; + tdb->tdb1.transaction->expanded = true; return 0; } @@ -422,12 +413,12 @@ static const struct tdb1_methods transaction1_methods = { /* start a tdb transaction. No token is returned, as only a single - transaction is allowed to be pending per tdb1_context + transaction is allowed to be pending per tdb_context */ -static int _tdb1_transaction_start(struct tdb1_context *tdb) +static int _tdb1_transaction_start(struct tdb_context *tdb) { /* some sanity checks */ - if (tdb->read_only || (tdb->flags & TDB1_INTERNAL) || tdb->traverse_read) { + if ((tdb->flags & TDB_RDONLY) || (tdb->flags & TDB_INTERNAL) || tdb->tdb1.traverse_read) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, TDB_LOG_USE_ERROR, "tdb1_transaction_start: cannot start a" " transaction on a read-only or" @@ -436,12 +427,12 @@ static int _tdb1_transaction_start(struct tdb1_context *tdb) } /* cope with nested tdb1_transaction_start() calls */ - if (tdb->transaction != NULL) { - if (!(tdb->flags & TDB1_ALLOW_NESTING)) { + if (tdb->tdb1.transaction != NULL) { + if (!(tdb->flags & TDB_ALLOW_NESTING)) { tdb->last_error = TDB_ERR_EINVAL; return -1; } - tdb->transaction->nesting++; + tdb->tdb1.transaction->nesting++; return 0; } @@ -455,7 +446,7 @@ static int _tdb1_transaction_start(struct tdb1_context *tdb) return -1; } - if (tdb->travlocks.next != NULL) { + if (tdb->tdb1.travlocks.next != NULL) { /* you cannot use transactions inside a traverse (although you can use traverse inside a transaction) as otherwise you can end up with deadlock */ @@ -465,42 +456,45 @@ static int _tdb1_transaction_start(struct tdb1_context *tdb) return -1; } - tdb->transaction = (struct tdb1_transaction *) + tdb->tdb1.transaction = (struct tdb1_transaction *) calloc(sizeof(struct tdb1_transaction), 1); - if (tdb->transaction == NULL) { + if (tdb->tdb1.transaction == NULL) { tdb->last_error = TDB_ERR_OOM; return -1; } /* a page at a time seems like a reasonable compromise between compactness and efficiency */ - tdb->transaction->block_size = tdb->page_size; + tdb->tdb1.transaction->block_size = tdb->tdb1.page_size; /* get the transaction write lock. This is a blocking lock. As discussed with Volker, there are a number of ways we could make this async, which we will probably do in the future */ - if (tdb1_transaction_lock(tdb, F_WRLCK, TDB1_LOCK_WAIT) == -1) { - SAFE_FREE(tdb->transaction->blocks); - SAFE_FREE(tdb->transaction); + if (tdb1_transaction_lock(tdb, F_WRLCK, TDB_LOCK_WAIT) == -1) { + SAFE_FREE(tdb->tdb1.transaction->blocks); + SAFE_FREE(tdb->tdb1.transaction); return -1; } /* get a read lock from the freelist to the end of file. This is upgraded to a write lock during the commit */ - if (tdb1_allrecord_lock(tdb, F_RDLCK, TDB1_LOCK_WAIT, true) == -1) { - tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, - "tdb1_transaction_start: failed to get hash locks"); + if (tdb1_allrecord_lock(tdb, F_RDLCK, TDB_LOCK_WAIT, true) == -1) { + if (errno != EAGAIN && errno != EINTR) { + tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, + "tdb1_transaction_start:" + " failed to get hash locks"); + } goto fail_allrecord_lock; } /* setup a copy of the hash table heads so the hash scan in traverse can be fast */ - tdb->transaction->hash_heads = (uint32_t *) - calloc(tdb->header.hash_size+1, sizeof(uint32_t)); - if (tdb->transaction->hash_heads == NULL) { + tdb->tdb1.transaction->hash_heads = (uint32_t *) + calloc(tdb->tdb1.header.hash_size+1, sizeof(uint32_t)); + if (tdb->tdb1.transaction->hash_heads == NULL) { tdb->last_error = TDB_ERR_OOM; goto fail; } - if (tdb->methods->tdb1_read(tdb, TDB1_FREELIST_TOP, tdb->transaction->hash_heads, + if (tdb->tdb1.io->tdb1_read(tdb, TDB1_FREELIST_TOP, tdb->tdb1.transaction->hash_heads, TDB1_HASHTABLE_SIZE(tdb), 0) != 0) { tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_transaction_start: failed to read hash heads"); @@ -509,13 +503,13 @@ static int _tdb1_transaction_start(struct tdb1_context *tdb) /* make sure we know about any file expansions already done by anyone else */ - tdb->methods->tdb1_oob(tdb, tdb->map_size + 1, 1); - tdb->transaction->old_map_size = tdb->map_size; + tdb->tdb1.io->tdb1_oob(tdb, tdb->file->map_size + 1, 1); + tdb->tdb1.transaction->old_map_size = tdb->file->map_size; /* finally hook the io methods, replacing them with transaction specific methods */ - tdb->transaction->io_methods = tdb->methods; - tdb->methods = &transaction1_methods; + tdb->tdb1.transaction->io_methods = tdb->tdb1.io; + tdb->tdb1.io = &transaction1_methods; return 0; @@ -523,13 +517,13 @@ fail: tdb1_allrecord_unlock(tdb, F_RDLCK); fail_allrecord_lock: tdb1_transaction_unlock(tdb, F_WRLCK); - SAFE_FREE(tdb->transaction->blocks); - SAFE_FREE(tdb->transaction->hash_heads); - SAFE_FREE(tdb->transaction); + SAFE_FREE(tdb->tdb1.transaction->blocks); + SAFE_FREE(tdb->tdb1.transaction->hash_heads); + SAFE_FREE(tdb->tdb1.transaction); return -1; } -int tdb1_transaction_start(struct tdb1_context *tdb) +int tdb1_transaction_start(struct tdb_context *tdb) { return _tdb1_transaction_start(tdb); } @@ -537,25 +531,25 @@ int tdb1_transaction_start(struct tdb1_context *tdb) /* sync to disk */ -static int transaction1_sync(struct tdb1_context *tdb, tdb1_off_t offset, tdb1_len_t length) +static int transaction1_sync(struct tdb_context *tdb, tdb1_off_t offset, tdb1_len_t length) { - if (tdb->flags & TDB1_NOSYNC) { + if (tdb->flags & TDB_NOSYNC) { return 0; } #if HAVE_FDATASYNC - if (fdatasync(tdb->fd) != 0) { + if (fdatasync(tdb->file->fd) != 0) { #else - if (fsync(tdb->fd) != 0) { + if (fsync(tdb->file->fd) != 0) { #endif tdb->last_error = tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR, "tdb1_transaction: fsync failed"); return -1; } #if HAVE_MMAP - if (tdb->map_ptr) { - tdb1_off_t moffset = offset & ~(tdb->page_size-1); - if (msync(moffset + (char *)tdb->map_ptr, + if (tdb->file->map_ptr) { + tdb1_off_t moffset = offset & ~(tdb->tdb1.page_size-1); + if (msync(moffset + (char *)tdb->file->map_ptr, length + (offset - moffset), MS_SYNC) != 0) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR, "tdb1_transaction:" @@ -569,40 +563,40 @@ static int transaction1_sync(struct tdb1_context *tdb, tdb1_off_t offset, tdb1_l } -static int _tdb1_transaction_cancel(struct tdb1_context *tdb) +static int _tdb1_transaction_cancel(struct tdb_context *tdb) { int i, ret = 0; - if (tdb->transaction == NULL) { + if (tdb->tdb1.transaction == NULL) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, TDB_LOG_USE_ERROR, "tdb1_transaction_cancel:" " no transaction"); return -1; } - if (tdb->transaction->nesting != 0) { - tdb->transaction->transaction_error = 1; - tdb->transaction->nesting--; + if (tdb->tdb1.transaction->nesting != 0) { + tdb->tdb1.transaction->transaction_error = 1; + tdb->tdb1.transaction->nesting--; return 0; } - tdb->map_size = tdb->transaction->old_map_size; + tdb->file->map_size = tdb->tdb1.transaction->old_map_size; /* free all the transaction blocks */ - for (i=0;itransaction->num_blocks;i++) { - if (tdb->transaction->blocks[i] != NULL) { - free(tdb->transaction->blocks[i]); + for (i=0;itdb1.transaction->num_blocks;i++) { + if (tdb->tdb1.transaction->blocks[i] != NULL) { + free(tdb->tdb1.transaction->blocks[i]); } } - SAFE_FREE(tdb->transaction->blocks); + SAFE_FREE(tdb->tdb1.transaction->blocks); - if (tdb->transaction->magic_offset) { - const struct tdb1_methods *methods = tdb->transaction->io_methods; + if (tdb->tdb1.transaction->magic_offset) { + const struct tdb1_methods *methods = tdb->tdb1.transaction->io_methods; const uint32_t invalid = TDB1_RECOVERY_INVALID_MAGIC; /* remove the recovery marker */ - if (methods->tdb1_write(tdb, tdb->transaction->magic_offset, &invalid, 4) == -1 || - transaction1_sync(tdb, tdb->transaction->magic_offset, 4) == -1) { + if (methods->tdb1_write(tdb, tdb->tdb1.transaction->magic_offset, &invalid, 4) == -1 || + transaction1_sync(tdb, tdb->tdb1.transaction->magic_offset, 4) == -1) { tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_transaction_cancel: failed to" " remove recovery magic"); @@ -614,10 +608,10 @@ static int _tdb1_transaction_cancel(struct tdb1_context *tdb) tdb1_release_transaction_locks(tdb); /* restore the normal io methods */ - tdb->methods = tdb->transaction->io_methods; + tdb->tdb1.io = tdb->tdb1.transaction->io_methods; - SAFE_FREE(tdb->transaction->hash_heads); - SAFE_FREE(tdb->transaction); + SAFE_FREE(tdb->tdb1.transaction->hash_heads); + SAFE_FREE(tdb->tdb1.transaction); return ret; } @@ -625,7 +619,7 @@ static int _tdb1_transaction_cancel(struct tdb1_context *tdb) /* cancel the current transaction */ -int tdb1_transaction_cancel(struct tdb1_context *tdb) +int tdb1_transaction_cancel(struct tdb_context *tdb) { return _tdb1_transaction_cancel(tdb); } @@ -633,31 +627,31 @@ int tdb1_transaction_cancel(struct tdb1_context *tdb) /* work out how much space the linearised recovery data will consume */ -static tdb1_len_t tdb1_recovery_size(struct tdb1_context *tdb) +static tdb1_len_t tdb1_recovery_size(struct tdb_context *tdb) { tdb1_len_t recovery_size = 0; int i; recovery_size = sizeof(uint32_t); - for (i=0;itransaction->num_blocks;i++) { - if (i * tdb->transaction->block_size >= tdb->transaction->old_map_size) { + for (i=0;itdb1.transaction->num_blocks;i++) { + if (i * tdb->tdb1.transaction->block_size >= tdb->tdb1.transaction->old_map_size) { break; } - if (tdb->transaction->blocks[i] == NULL) { + if (tdb->tdb1.transaction->blocks[i] == NULL) { continue; } recovery_size += 2*sizeof(tdb1_off_t); - if (i == tdb->transaction->num_blocks-1) { - recovery_size += tdb->transaction->last_block_size; + if (i == tdb->tdb1.transaction->num_blocks-1) { + recovery_size += tdb->tdb1.transaction->last_block_size; } else { - recovery_size += tdb->transaction->block_size; + recovery_size += tdb->tdb1.transaction->block_size; } } return recovery_size; } -int tdb1_recovery_area(struct tdb1_context *tdb, +int tdb1_recovery_area(struct tdb_context *tdb, const struct tdb1_methods *methods, tdb1_off_t *recovery_offset, struct tdb1_record *rec) @@ -689,13 +683,13 @@ int tdb1_recovery_area(struct tdb1_context *tdb, allocate the recovery area, or use an existing recovery area if it is large enough */ -static int tdb1_recovery_allocate(struct tdb1_context *tdb, +static int tdb1_recovery_allocate(struct tdb_context *tdb, tdb1_len_t *recovery_size, tdb1_off_t *recovery_offset, tdb1_len_t *recovery_max_size) { struct tdb1_record rec; - const struct tdb1_methods *methods = tdb->transaction->io_methods; + const struct tdb1_methods *methods = tdb->tdb1.transaction->io_methods; tdb1_off_t recovery_head; if (tdb1_recovery_area(tdb, methods, &recovery_head, &rec) == -1) { @@ -732,12 +726,13 @@ static int tdb1_recovery_allocate(struct tdb1_context *tdb, *recovery_size = tdb1_recovery_size(tdb); /* round up to a multiple of page size */ - *recovery_max_size = TDB1_ALIGN(sizeof(rec) + *recovery_size, tdb->page_size) - sizeof(rec); - *recovery_offset = tdb->map_size; + *recovery_max_size = TDB1_ALIGN(sizeof(rec) + *recovery_size, + tdb->tdb1.page_size) - sizeof(rec); + *recovery_offset = tdb->file->map_size; recovery_head = *recovery_offset; - if (methods->tdb1_expand_file(tdb, tdb->transaction->old_map_size, - (tdb->map_size - tdb->transaction->old_map_size) + + if (methods->tdb1_expand_file(tdb, tdb->tdb1.transaction->old_map_size, + (tdb->file->map_size - tdb->tdb1.transaction->old_map_size) + sizeof(rec) + *recovery_max_size) == -1) { tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_recovery_allocate:" @@ -746,11 +741,11 @@ static int tdb1_recovery_allocate(struct tdb1_context *tdb, } /* remap the file (if using mmap) */ - methods->tdb1_oob(tdb, tdb->map_size + 1, 1); + methods->tdb1_oob(tdb, tdb->file->map_size + 1, 1); /* we have to reset the old map size so that we don't try to expand the file again in the transaction commit, which would destroy the recovery area */ - tdb->transaction->old_map_size = tdb->map_size; + tdb->tdb1.transaction->old_map_size = tdb->file->map_size; /* write the recovery header offset and sync - we can sync without a race here as the magic ptr in the recovery record has not been set */ @@ -776,15 +771,15 @@ static int tdb1_recovery_allocate(struct tdb1_context *tdb, /* setup the recovery data that will be used on a crash during commit */ -static int transaction1_setup_recovery(struct tdb1_context *tdb, +static int transaction1_setup_recovery(struct tdb_context *tdb, tdb1_off_t *magic_offset) { tdb1_len_t recovery_size; unsigned char *data, *p; - const struct tdb1_methods *methods = tdb->transaction->io_methods; + const struct tdb1_methods *methods = tdb->tdb1.transaction->io_methods; struct tdb1_record *rec; tdb1_off_t recovery_offset, recovery_max_size; - tdb1_off_t old_map_size = tdb->transaction->old_map_size; + tdb1_off_t old_map_size = tdb->tdb1.transaction->old_map_size; uint32_t magic, tailer; int i; @@ -814,24 +809,24 @@ static int transaction1_setup_recovery(struct tdb1_context *tdb, /* build the recovery data into a single blob to allow us to do a single large write, which should be more efficient */ p = data + sizeof(*rec); - for (i=0;itransaction->num_blocks;i++) { + for (i=0;itdb1.transaction->num_blocks;i++) { tdb1_off_t offset; tdb1_len_t length; - if (tdb->transaction->blocks[i] == NULL) { + if (tdb->tdb1.transaction->blocks[i] == NULL) { continue; } - offset = i * tdb->transaction->block_size; - length = tdb->transaction->block_size; - if (i == tdb->transaction->num_blocks-1) { - length = tdb->transaction->last_block_size; + offset = i * tdb->tdb1.transaction->block_size; + length = tdb->tdb1.transaction->block_size; + if (i == tdb->tdb1.transaction->num_blocks-1) { + length = tdb->tdb1.transaction->last_block_size; } if (offset >= old_map_size) { continue; } - if (offset + length > tdb->transaction->old_map_size) { + if (offset + length > tdb->tdb1.transaction->old_map_size) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_CORRUPT, TDB_LOG_ERROR, "tdb1_transaction_setup_recovery: transaction data over new region boundary"); @@ -913,18 +908,18 @@ static int transaction1_setup_recovery(struct tdb1_context *tdb, return 0; } -static int _tdb1_transaction_prepare_commit(struct tdb1_context *tdb) +static int _tdb1_transaction_prepare_commit(struct tdb_context *tdb) { const struct tdb1_methods *methods; - if (tdb->transaction == NULL) { + if (tdb->tdb1.transaction == NULL) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, TDB_LOG_USE_ERROR, "tdb1_transaction_prepare_commit:" " no transaction"); return -1; } - if (tdb->transaction->prepared) { + if (tdb->tdb1.transaction->prepared) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, TDB_LOG_USE_ERROR, "tdb1_transaction_prepare_commit:" " transaction already prepared"); @@ -932,7 +927,7 @@ static int _tdb1_transaction_prepare_commit(struct tdb1_context *tdb) return -1; } - if (tdb->transaction->transaction_error) { + if (tdb->tdb1.transaction->transaction_error) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR, "tdb1_transaction_prepare_commit:" " transaction error pending"); @@ -941,16 +936,16 @@ static int _tdb1_transaction_prepare_commit(struct tdb1_context *tdb) } - if (tdb->transaction->nesting != 0) { + if (tdb->tdb1.transaction->nesting != 0) { return 0; } /* check for a null transaction */ - if (tdb->transaction->blocks == NULL) { + if (tdb->tdb1.transaction->blocks == NULL) { return 0; } - methods = tdb->transaction->io_methods; + methods = tdb->tdb1.transaction->io_methods; /* if there are any locks pending then the caller has not nested their locks properly, so fail the transaction */ @@ -964,49 +959,49 @@ static int _tdb1_transaction_prepare_commit(struct tdb1_context *tdb) /* upgrade the main transaction lock region to a write lock */ if (tdb1_allrecord_upgrade(tdb) == -1) { - tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, - "tdb1_transaction_prepare_commit:" - " failed to upgrade hash locks"); - _tdb1_transaction_cancel(tdb); + if (errno != EAGAIN && errno != EINTR) { + tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, + "tdb1_transaction_prepare_commit:" + " failed to upgrade hash locks"); + } return -1; } /* get the open lock - this prevents new users attaching to the database during the commit */ - if (tdb1_nest_lock(tdb, TDB1_OPEN_LOCK, F_WRLCK, TDB1_LOCK_WAIT) == -1) { - tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, - "tdb1_transaction_prepare_commit:" - " failed to get open lock"); - _tdb1_transaction_cancel(tdb); + if (tdb1_nest_lock(tdb, TDB1_OPEN_LOCK, F_WRLCK, TDB_LOCK_WAIT) == -1) { + if (errno != EAGAIN && errno != EINTR) { + tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, + "tdb1_transaction_prepare_commit:" + " failed to get open lock"); + } return -1; } - if (!(tdb->flags & TDB1_NOSYNC)) { + if (!(tdb->flags & TDB_NOSYNC)) { /* write the recovery data to the end of the file */ - if (transaction1_setup_recovery(tdb, &tdb->transaction->magic_offset) == -1) { + if (transaction1_setup_recovery(tdb, &tdb->tdb1.transaction->magic_offset) == -1) { tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_transaction_prepare_commit:" " failed to setup recovery data"); - _tdb1_transaction_cancel(tdb); return -1; } } - tdb->transaction->prepared = true; + tdb->tdb1.transaction->prepared = true; /* expand the file to the new size if needed */ - if (tdb->map_size != tdb->transaction->old_map_size) { - if (methods->tdb1_expand_file(tdb, tdb->transaction->old_map_size, - tdb->map_size - - tdb->transaction->old_map_size) == -1) { + if (tdb->file->map_size != tdb->tdb1.transaction->old_map_size) { + if (methods->tdb1_expand_file(tdb, tdb->tdb1.transaction->old_map_size, + tdb->file->map_size - + tdb->tdb1.transaction->old_map_size) == -1) { tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_transaction_prepare_commit:" " expansion failed"); - _tdb1_transaction_cancel(tdb); return -1; } - tdb->map_size = tdb->transaction->old_map_size; - methods->tdb1_oob(tdb, tdb->map_size + 1, 1); + tdb->file->map_size = tdb->tdb1.transaction->old_map_size; + methods->tdb1_oob(tdb, tdb->file->map_size + 1, 1); } /* Keep the open lock until the actual commit */ @@ -1017,13 +1012,13 @@ static int _tdb1_transaction_prepare_commit(struct tdb1_context *tdb) /* prepare to commit the current transaction */ -int tdb1_transaction_prepare_commit(struct tdb1_context *tdb) +int tdb1_transaction_prepare_commit(struct tdb_context *tdb) { return _tdb1_transaction_prepare_commit(tdb); } /* A repack is worthwhile if the largest is less than half total free. */ -static bool repack_worthwhile(struct tdb1_context *tdb) +static bool repack_worthwhile(struct tdb_context *tdb) { tdb1_off_t ptr; struct tdb1_record rec; @@ -1047,20 +1042,20 @@ static bool repack_worthwhile(struct tdb1_context *tdb) /* commit the current transaction */ -int tdb1_transaction_commit(struct tdb1_context *tdb) +int tdb1_transaction_commit(struct tdb_context *tdb) { const struct tdb1_methods *methods; int i; bool need_repack = false; - if (tdb->transaction == NULL) { + if (tdb->tdb1.transaction == NULL) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL, TDB_LOG_USE_ERROR, "tdb1_transaction_commit:" " no transaction"); return -1; } - if (tdb->transaction->transaction_error) { + if (tdb->tdb1.transaction->transaction_error) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR, "tdb1_transaction_commit:" " transaction error pending"); @@ -1069,41 +1064,43 @@ int tdb1_transaction_commit(struct tdb1_context *tdb) } - if (tdb->transaction->nesting != 0) { - tdb->transaction->nesting--; + if (tdb->tdb1.transaction->nesting != 0) { + tdb->tdb1.transaction->nesting--; return 0; } /* check for a null transaction */ - if (tdb->transaction->blocks == NULL) { + if (tdb->tdb1.transaction->blocks == NULL) { _tdb1_transaction_cancel(tdb); return 0; } - if (!tdb->transaction->prepared) { + if (!tdb->tdb1.transaction->prepared) { int ret = _tdb1_transaction_prepare_commit(tdb); - if (ret) + if (ret) { + _tdb1_transaction_cancel(tdb); return ret; + } } - methods = tdb->transaction->io_methods; + methods = tdb->tdb1.transaction->io_methods; /* perform all the writes */ - for (i=0;itransaction->num_blocks;i++) { + for (i=0;itdb1.transaction->num_blocks;i++) { tdb1_off_t offset; tdb1_len_t length; - if (tdb->transaction->blocks[i] == NULL) { + if (tdb->tdb1.transaction->blocks[i] == NULL) { continue; } - offset = i * tdb->transaction->block_size; - length = tdb->transaction->block_size; - if (i == tdb->transaction->num_blocks-1) { - length = tdb->transaction->last_block_size; + offset = i * tdb->tdb1.transaction->block_size; + length = tdb->tdb1.transaction->block_size; + if (i == tdb->tdb1.transaction->num_blocks-1) { + length = tdb->tdb1.transaction->last_block_size; } - if (methods->tdb1_write(tdb, offset, tdb->transaction->blocks[i], length) == -1) { + if (methods->tdb1_write(tdb, offset, tdb->tdb1.transaction->blocks[i], length) == -1) { tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_transaction_commit:" " write failed during commit"); @@ -1111,7 +1108,7 @@ int tdb1_transaction_commit(struct tdb1_context *tdb) /* we've overwritten part of the data and possibly expanded the file, so we need to run the crash recovery code */ - tdb->methods = methods; + tdb->tdb1.io = methods; tdb1_transaction_recover(tdb); _tdb1_transaction_cancel(tdb); @@ -1120,19 +1117,19 @@ int tdb1_transaction_commit(struct tdb1_context *tdb) "tdb1_transaction_commit: write failed"); return -1; } - SAFE_FREE(tdb->transaction->blocks[i]); + SAFE_FREE(tdb->tdb1.transaction->blocks[i]); } /* Do this before we drop lock or blocks. */ - if (tdb->transaction->expanded) { + if (tdb->tdb1.transaction->expanded) { need_repack = repack_worthwhile(tdb); } - SAFE_FREE(tdb->transaction->blocks); - tdb->transaction->num_blocks = 0; + SAFE_FREE(tdb->tdb1.transaction->blocks); + tdb->tdb1.transaction->num_blocks = 0; /* ensure the new data is on disk */ - if (transaction1_sync(tdb, 0, tdb->map_size) == -1) { + if (transaction1_sync(tdb, 0, tdb->file->map_size) == -1) { return -1; } @@ -1168,7 +1165,7 @@ int tdb1_transaction_commit(struct tdb1_context *tdb) database write access already established (including the open lock to prevent new processes attaching) */ -int tdb1_transaction_recover(struct tdb1_context *tdb) +int tdb1_transaction_recover(struct tdb_context *tdb) { tdb1_off_t recovery_head, recovery_eof; unsigned char *data, *p; @@ -1189,7 +1186,7 @@ int tdb1_transaction_recover(struct tdb1_context *tdb) } /* read the recovery record */ - if (tdb->methods->tdb1_read(tdb, recovery_head, &rec, + if (tdb->tdb1.io->tdb1_read(tdb, recovery_head, &rec, sizeof(rec), TDB1_DOCONV()) == -1) { tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_transaction_recover:" @@ -1202,7 +1199,7 @@ int tdb1_transaction_recover(struct tdb1_context *tdb) return 0; } - if (tdb->read_only) { + if (tdb->flags & TDB_RDONLY) { tdb->last_error = tdb_logerr(tdb, TDB_ERR_CORRUPT, TDB_LOG_ERROR, "tdb1_transaction_recover:" " attempt to recover read only" @@ -1221,7 +1218,7 @@ int tdb1_transaction_recover(struct tdb1_context *tdb) } /* read the full recovery data */ - if (tdb->methods->tdb1_read(tdb, recovery_head + sizeof(rec), data, + if (tdb->tdb1.io->tdb1_read(tdb, recovery_head + sizeof(rec), data, rec.data_len, 0) == -1) { tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_transaction_recover:" @@ -1239,7 +1236,7 @@ int tdb1_transaction_recover(struct tdb1_context *tdb) memcpy(&ofs, p, 4); memcpy(&len, p+4, 4); - if (tdb->methods->tdb1_write(tdb, ofs, p+8, len) == -1) { + if (tdb->tdb1.io->tdb1_write(tdb, ofs, p+8, len) == -1) { free(data); tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_transaction_recover: failed to recover" @@ -1251,7 +1248,7 @@ int tdb1_transaction_recover(struct tdb1_context *tdb) free(data); - if (transaction1_sync(tdb, 0, tdb->map_size) == -1) { + if (transaction1_sync(tdb, 0, tdb->file->map_size) == -1) { tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR, "tdb1_transaction_recover: failed to sync recovery"); return -1; @@ -1292,7 +1289,7 @@ int tdb1_transaction_recover(struct tdb1_context *tdb) } /* Any I/O failures we say "needs recovery". */ -bool tdb1_needs_recovery(struct tdb1_context *tdb) +bool tdb1_needs_recovery(struct tdb_context *tdb) { tdb1_off_t recovery_head; struct tdb1_record rec; @@ -1308,7 +1305,7 @@ bool tdb1_needs_recovery(struct tdb1_context *tdb) } /* read the recovery record */ - if (tdb->methods->tdb1_read(tdb, recovery_head, &rec, + if (tdb->tdb1.io->tdb1_read(tdb, recovery_head, &rec, sizeof(rec), TDB1_DOCONV()) == -1) { return true; }