mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
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df1d85c0f8
- Provide an option for a file system to support close wtih references held. This can happen in more complex file systems and file descriptor handling with more complete reference handling implementations where an fd can hold other fds and close can be call on any fd and succeed. - Fix open IOP leaks in the error paths. - Provide better definition of the IOP flags to help clarify the code. Fixes #5201
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* fstat() - POSIX 1003.1b 5.6.2 - Get File Status
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/stat.h>
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#include <unistd.h>
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#include <string.h>
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#include <rtems/libio_.h>
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#include <rtems/seterr.h>
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int fstat(
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int fd,
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struct stat *sbuf
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)
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{
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rtems_libio_t *iop;
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int rv;
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/*
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* Check to see if we were passed a valid pointer.
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*/
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if ( !sbuf )
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rtems_set_errno_and_return_minus_one( EFAULT );
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/*
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* Now process the stat() request.
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*/
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LIBIO_GET_IOP( fd, iop );
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/*
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* Zero out the stat structure so the various support
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* versions of stat don't have to.
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*/
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memset( sbuf, 0, sizeof(struct stat) );
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rv = (*iop->pathinfo.handlers->fstat_h)( &iop->pathinfo, sbuf );
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if (rv == 0 && !rtems_libio_iop_is_open( iop ) ) {
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errno = EBADF;
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rv = -1;
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}
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rtems_libio_iop_drop( iop );
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return rv;
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}
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/*
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* _fstat_r
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*
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* This is the Newlib dependent reentrant version of fstat().
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*/
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#if defined(RTEMS_NEWLIB) && !defined(HAVE_FSTAT_R)
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#include <reent.h>
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int _fstat_r(
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struct _reent *ptr RTEMS_UNUSED,
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int fd,
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struct stat *buf
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)
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{
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return fstat( fd, buf );
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}
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#endif
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