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beafb7521f
* libio/iofclose.c (_IO_new_fclose): Unlink descriptor first to avoid deadlock. * libio/oldiofclose.c (_IO_old_fclose): Likewise. * libio/genops.c (_IO_un_link): Get stream lock since it's not always done in the caller. (_IO_link_in): Likewise.
104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
/* Copyright (C) 1993,1995,1997-1999,2000,2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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As a special exception, if you link the code in this file with
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files compiled with a GNU compiler to produce an executable,
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that does not cause the resulting executable to be covered by
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the GNU Lesser General Public License. This exception does not
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however invalidate any other reasons why the executable file
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might be covered by the GNU Lesser General Public License.
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This exception applies to code released by its copyright holders
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in files containing the exception. */
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#include "libioP.h"
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#ifdef __STDC__
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#include <stdlib.h>
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#endif
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#if _LIBC
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# include "../iconv/gconv_int.h"
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# include <shlib-compat.h>
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#else
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# define SHLIB_COMPAT(a, b, c) 0
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# define _IO_new_fclose fclose
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#endif
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int
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_IO_new_fclose (fp)
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_IO_FILE *fp;
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{
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int status;
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CHECK_FILE(fp, EOF);
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#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
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/* We desperately try to help programs which are using streams in a
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strange way and mix old and new functions. Detect old streams
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here. */
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if (fp->_vtable_offset != 0)
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return _IO_old_fclose (fp);
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#endif
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/* First unlink the stream. */
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if (fp->_IO_file_flags & _IO_IS_FILEBUF)
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_IO_un_link ((struct _IO_FILE_plus *) fp);
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_IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
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_IO_flockfile (fp);
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if (fp->_IO_file_flags & _IO_IS_FILEBUF)
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status = _IO_file_close_it (fp);
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else
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status = fp->_flags & _IO_ERR_SEEN ? -1 : 0;
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_IO_FINISH (fp);
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_IO_funlockfile (fp);
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if (fp->_mode > 0)
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{
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#if _LIBC
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/* This stream has a wide orientation. This means we have to free
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the conversion functions. */
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struct _IO_codecvt *cc = fp->_codecvt;
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if (cc->__cd_in.__cd.__steps->__shlib_handle != NULL)
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{
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--cc->__cd_in.__cd.__steps->__counter;
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__gconv_close_transform (cc->__cd_in.__cd.__steps, 1);
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}
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if (cc->__cd_out.__cd.__steps->__shlib_handle != NULL)
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{
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--cc->__cd_out.__cd.__steps->__counter;
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__gconv_close_transform (cc->__cd_out.__cd.__steps, 1);
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}
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#endif
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}
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_IO_cleanup_region_end (0);
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if (_IO_have_backup (fp))
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_IO_free_backup_area (fp);
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if (fp != _IO_stdin && fp != _IO_stdout && fp != _IO_stderr)
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{
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fp->_IO_file_flags = 0;
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free(fp);
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}
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return status;
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}
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#ifdef _LIBC
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versioned_symbol (libc, _IO_new_fclose, _IO_fclose, GLIBC_2_1);
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strong_alias (_IO_new_fclose, __new_fclose)
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versioned_symbol (libc, __new_fclose, fclose, GLIBC_2_1);
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#endif
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