forked from Imagelibrary/rtems
baef823cd5
Check iop reference count in close() and return -1 with errno set to EBUSY in case the file descriptor is still in use. Update #3132.
51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
/**
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* @file
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*
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* @brief Write to a File
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* @ingroup libcsupport
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*/
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/*
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* COPYRIGHT (c) 1989-2011.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems/libio_.h>
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#include <rtems/seterr.h>
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/**
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* POSIX 1003.1b 6.4.2 - Write to a File
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*
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* This routine writes count bytes from from buffer pointed to by buffer
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* to the file associated with the open file descriptor, fildes.
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*/
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ssize_t write(
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int fd,
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const void *buffer,
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size_t count
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)
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{
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rtems_libio_t *iop;
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ssize_t n;
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rtems_libio_check_buffer( buffer );
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rtems_libio_check_count( count );
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LIBIO_GET_IOP_WITH_ACCESS( fd, iop, LIBIO_FLAGS_WRITE, EBADF );
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/*
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* Now process the write() request.
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*/
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n = (*iop->pathinfo.handlers->write_h)( iop, buffer, count );
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rtems_libio_iop_drop( iop );
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return n;
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}
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