190792Sgshapiro/* 2261363Sgshapiro * Copyright (c) 2000-2001 Proofpoint, Inc. and its suppliers. 390792Sgshapiro * All rights reserved. 490792Sgshapiro * Copyright (c) 1990, 1993 590792Sgshapiro * The Regents of the University of California. All rights reserved. 690792Sgshapiro * 790792Sgshapiro * This code is derived from software contributed to Berkeley by 890792Sgshapiro * Chris Torek. 990792Sgshapiro * 1090792Sgshapiro * By using this file, you agree to the terms and conditions set 1190792Sgshapiro * forth in the LICENSE file which can be found at the top level of 1290792Sgshapiro * the sendmail distribution. 1390792Sgshapiro */ 1490792Sgshapiro 1590792Sgshapiro#include <sm/gen.h> 16266692SgshapiroSM_RCSID("@(#)$Id: fwrite.c,v 1.25 2013-11-22 20:51:43 ca Exp $") 1790792Sgshapiro#include <errno.h> 1890792Sgshapiro#include <sm/io.h> 1990792Sgshapiro#include <sm/assert.h> 2090792Sgshapiro#include "local.h" 2190792Sgshapiro#include "fvwrite.h" 2290792Sgshapiro 2390792Sgshapiro/* 2490792Sgshapiro** SM_IO_WRITE -- write to a file pointer 2590792Sgshapiro** 2690792Sgshapiro** Parameters: 2790792Sgshapiro** fp -- file pointer writing to 2890792Sgshapiro** timeout -- time to complete the write 2990792Sgshapiro** buf -- location of data to be written 3090792Sgshapiro** size -- number of bytes to be written 3190792Sgshapiro** 3290792Sgshapiro** Result: 3390792Sgshapiro** Failure: returns 0 _and_ sets errno 3490792Sgshapiro** Success: returns >=0 with errno unchanged, where the 3590792Sgshapiro** number returned is the number of bytes written. 3690792Sgshapiro*/ 3790792Sgshapiro 3890792Sgshapirosize_t 3990792Sgshapirosm_io_write(fp, timeout, buf, size) 4090792Sgshapiro SM_FILE_T *fp; 4190792Sgshapiro int timeout; 4290792Sgshapiro const void *buf; 4390792Sgshapiro size_t size; 4490792Sgshapiro{ 4590792Sgshapiro struct sm_uio uio; 4690792Sgshapiro struct sm_iov iov; 4790792Sgshapiro 4890792Sgshapiro SM_REQUIRE_ISA(fp, SmFileMagic); 4990792Sgshapiro 5090792Sgshapiro if (fp->f_write == NULL) 5190792Sgshapiro { 5290792Sgshapiro errno = ENODEV; 5390792Sgshapiro return 0; 5490792Sgshapiro } 5590792Sgshapiro 5690792Sgshapiro iov.iov_base = (void *) buf; 5790792Sgshapiro uio.uio_resid = iov.iov_len = size; 5890792Sgshapiro uio.uio_iov = &iov; 5990792Sgshapiro uio.uio_iovcnt = 1; 6090792Sgshapiro 6190792Sgshapiro /* The usual case is success (sm_fvwrite returns 0) */ 6290792Sgshapiro if (sm_fvwrite(fp, timeout, &uio) == 0) 6390792Sgshapiro return size; 6490792Sgshapiro 6590792Sgshapiro /* else return number of bytes actually written */ 6690792Sgshapiro return size - uio.uio_resid; 6790792Sgshapiro} 68