--- libaitrpc/src/blob.c 2010/06/23 17:29:07 1.1.2.3 +++ libaitrpc/src/blob.c 2010/07/08 07:32:53 1.1.2.11 @@ -2,6 +2,66 @@ /* + * rpc_srv_blobCreate() Create map blob to memory region and return object + * @srv = RPC Server instance + * @len = BLOB length object + * return: NULL error or !=NULL allocated BLOB object + */ +inline rpc_blob_t * +rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len) +{ + rpc_blob_t *blob = NULL; + char szFName[MAXPATHLEN]; + int f; + u_int rnd; + + srandomdev(); + srandom(getpid() ^ time(NULL)); +again: + rnd = random() % UINT_MAX; + + memset(szFName, 0, MAXPATHLEN); + snprintf(szFName, MAXPATHLEN, BLOB_FILE, srv->srv_blob.dir, rnd); + f = open(szFName, O_CREAT | O_EXCL | O_RDWR, 0600); + if (f == -1) { + if (errno == EEXIST) + goto again; + + LOGERR; + return NULL; + } + if (lseek(f, len - 1, SEEK_SET) == -1) { + LOGERR; + close(f); + unlink(szFName); + return NULL; + } else + write(f, "", 1); + + blob = malloc(sizeof(rpc_blob_t)); + if (!blob) { + LOGERR; + close(f); + unlink(szFName); + return NULL; + } + + blob->blob_data = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, f, 0); + if (blob->blob_data == MAP_FAILED) { + LOGERR; + free(blob); + close(f); + unlink(szFName); + return NULL; + } else + close(f); + + blob->blob_len = len; + blob->blob_var = rnd; + return blob; +} + +/* * rpc_srv_blobMap() Map blob to memory region * @srv = RPC Server instance * @blob = Map to this BLOB element @@ -21,7 +81,7 @@ rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t memset(szFName, 0, MAXPATHLEN); snprintf(szFName, MAXPATHLEN, BLOB_FILE, srv->srv_blob.dir, blob->blob_var); - f = open(szFName, O_RDONLY); + f = open(szFName, O_RDWR); if (f == -1) { LOGERR; return -1; @@ -32,7 +92,7 @@ rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t return -1; } - blob->blob_data = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, f, 0); + blob->blob_data = mmap(NULL, sb.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, f, 0); if (blob->blob_data == MAP_FAILED) { LOGERR; close(f); @@ -41,6 +101,8 @@ rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t } else { blob->blob_len = sb.st_size; close(f); + + madvise(blob->blob_data, sb.st_size, MADV_SEQUENTIAL); } return 0; @@ -123,21 +185,193 @@ rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_ /* * rpc_srv_recvBLOB() Receive BLOB from client * @cli = Client instance - * return: -1 error, 0 ok + * @blob = Mapped BLOB element + * return: -1 error, 0 ok, >0 unreceived data from client, may be error? */ int -rpc_srv_recvBLOB(rpc_cli_t * __restrict cli) +rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob) { int ret, len; uint8_t *pos; - rpc_srv_t *s; + fd_set fds; + struct timeval tv = { DEF_RPC_TIMEOUT, 0 }; - if (!cli || !cli->cli_parent) { + if (!cli || !blob || !blob->blob_data) { rpc_SetErr(EINVAL, "Error:: invalid arguments ...\n"); return -1; - } else - s = cli->cli_parent; + } + for (ret = blob->blob_len, pos = blob->blob_data; ret > 0; ret -= len, pos += len) { + FD_ZERO(&fds); + FD_SET(cli->cli_sock, &fds); + len = select(cli->cli_sock + 1, &fds, NULL, NULL, &tv); + if (len < 1) { + LOGERR; + return -1; + } + if ((len = recv(cli->cli_sock, pos, BLOBSIZ, 0)) == -1) { + LOGERR; + return -1; + } + } + return ret; +} + +// ------------------------------------------------------------ + +/* + * rpc_cli_sendBLOB() Send BLOB to server + * @cli = Client instance + * @var = BLOB variable + * @data = BLOB data + * return: -1 error, 0 ok, 1 remote error + */ +int +rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var, void * __restrict data) +{ + int ret, len; + uint8_t *pos; + struct tagBLOBHdr hdr; + fd_set fds; + struct timeval tv = { DEF_RPC_TIMEOUT, 0 }; + + if (!cli || !var || !data) { + rpc_SetErr(EINVAL, "Error:: invalid arguments ...\n"); + return -1; + } + + memcpy(&hdr.hdr_session, cli->cli_parent, sizeof(rpc_sess_t)); + hdr.hdr_cmd = set; + hdr.hdr_var = 0; + hdr.hdr_ret = 0; + hdr.hdr_len = var->val_len; + if (send(cli->cli_sock, &hdr, sizeof hdr, 0) == -1) { + LOGERR; + return -1; + } + + for (ret = var->val_len, pos = data; ret > 0; ret -= len, pos += len) + if ((len = send(cli->cli_sock, pos, ret > BLOBSIZ ? BLOBSIZ : ret, 0)) == -1) { + LOGERR; + return -1; + } + + FD_ZERO(&fds); + FD_SET(cli->cli_sock, &fds); + switch (select(cli->cli_sock + 1, &fds, NULL, NULL, &tv)) { + case -1: + LOGERR; + return -1; + case 0: + rpc_SetErr(ETIMEDOUT, "Error:: Timeout reached! Server not responde ...\n"); + return -1; + } + if (recv(cli->cli_sock, &hdr, sizeof hdr, 0) == -1) { + LOGERR; + return -1; + } + if (hdr.hdr_cmd != error) { + if (hdr.hdr_len != var->val_len) { + rpc_SetErr(EBADMSG, "Error:: Bad return length packet ...\n"); + return -1; + } + + var->val.blob = hdr.hdr_var; + } + + return hdr.hdr_cmd == error; +} + +/* + * rpc_cli_recvBLOB() Receive BLOB from server + * @cli = Client instance + * @var = BLOB variable + * @data = BLOB data, must be free after use! + * return: -1 error, 0 ok, 1 remote error + */ +int +rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var, void ** data) +{ + int ret, len; + uint8_t *pos; + fd_set fds; + struct timeval tv = { DEF_RPC_TIMEOUT, 0 }; + struct tagBLOBHdr hdr; + + if (!cli || !var || !data) { + rpc_SetErr(EINVAL, "Error:: invalid arguments ...\n"); + return -1; + } + + *data = malloc(var->val_len); + if (!*data) { + LOGERR; + return -1; + } else + memset(*data, 0, var->val_len); + + memcpy(&hdr.hdr_session, cli->cli_parent, sizeof(rpc_sess_t)); + hdr.hdr_cmd = get; + hdr.hdr_var = (uint32_t) RPC_GET_BLOB(var); + hdr.hdr_ret = 0; + hdr.hdr_len = 0; + if (send(cli->cli_sock, &hdr, sizeof hdr, 0) == -1) { + LOGERR; + free(*data); + *data = NULL; + return -1; + } + + for (ret = var->val_len, pos = *data; ret > 0; ret -= len, pos += len) { + FD_ZERO(&fds); + FD_SET(cli->cli_sock, &fds); + len = select(cli->cli_sock + 1, &fds, NULL, NULL, &tv); + if (len < 1) { + LOGERR; + free(*data); + *data = NULL; + return -1; + } + + if ((len = recv(cli->cli_sock, pos, BLOBSIZ, 0)) == -1) { + LOGERR; + free(*data); + *data = NULL; + return -1; + } + } + printf("get all bytes ret=%d *data=%s", ret, *data); + + FD_ZERO(&fds); + FD_SET(cli->cli_sock, &fds); + switch (select(cli->cli_sock + 1, &fds, NULL, NULL, &tv)) { + case -1: + LOGERR; + free(*data); + *data = NULL; + return -1; + case 0: + rpc_SetErr(ETIMEDOUT, "Error:: Timeout reached! Server not responde ...\n"); + free(*data); + *data = NULL; + return -1; + } + if (recv(cli->cli_sock, &hdr, sizeof hdr, 0) == -1) { + LOGERR; + free(*data); + *data = NULL; + return -1; + } + if (hdr.hdr_cmd != error) { + if (hdr.hdr_len != var->val_len) { + rpc_SetErr(EBADMSG, "Error:: Bad return length packet ...\n"); + free(*data); + *data = NULL; + return -1; + } + } + + return hdr.hdr_cmd == error; }