mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-28 11:57:28 +00:00
68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/*
|
|
* Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
|
|
* All rights reserved.
|
|
* Copyright (c) 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Chris Torek.
|
|
*
|
|
* By using this file, you agree to the terms and conditions set
|
|
* forth in the LICENSE file which can be found at the top level of
|
|
* the sendmail distribution.
|
|
*/
|
|
|
|
#include <sm/gen.h>
|
|
SM_RCSID("@(#)$Id: fwrite.c,v 1.24 2001/09/11 04:04:48 gshapiro Exp $")
|
|
#include <errno.h>
|
|
#include <sm/io.h>
|
|
#include <sm/assert.h>
|
|
#include "local.h"
|
|
#include "fvwrite.h"
|
|
|
|
/*
|
|
** SM_IO_WRITE -- write to a file pointer
|
|
**
|
|
** Parameters:
|
|
** fp -- file pointer writing to
|
|
** timeout -- time to complete the write
|
|
** buf -- location of data to be written
|
|
** size -- number of bytes to be written
|
|
**
|
|
** Result:
|
|
** Failure: returns 0 _and_ sets errno
|
|
** Success: returns >=0 with errno unchanged, where the
|
|
** number returned is the number of bytes written.
|
|
*/
|
|
|
|
size_t
|
|
sm_io_write(fp, timeout, buf, size)
|
|
SM_FILE_T *fp;
|
|
int timeout;
|
|
const void *buf;
|
|
size_t size;
|
|
{
|
|
struct sm_uio uio;
|
|
struct sm_iov iov;
|
|
|
|
SM_REQUIRE_ISA(fp, SmFileMagic);
|
|
|
|
if (fp->f_write == NULL)
|
|
{
|
|
errno = ENODEV;
|
|
return 0;
|
|
}
|
|
|
|
iov.iov_base = (void *) buf;
|
|
uio.uio_resid = iov.iov_len = size;
|
|
uio.uio_iov = &iov;
|
|
uio.uio_iovcnt = 1;
|
|
|
|
/* The usual case is success (sm_fvwrite returns 0) */
|
|
if (sm_fvwrite(fp, timeout, &uio) == 0)
|
|
return size;
|
|
|
|
/* else return number of bytes actually written */
|
|
return size - uio.uio_resid;
|
|
}
|