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7b7cb1ecc9
Similarly to deprecating close(), I am now deprecating fclose() and introduce VIR_FORCE_FCLOSE() and VIR_FCLOSE(). Also, fdopen() is replaced with VIR_FDOPEN(). Most of the files are opened in read-only mode, so usage of VIR_FORCE_CLOSE() seemed appropriate. Others that are opened in write mode already had the fclose()< 0 check and I converted those to VIR_FCLOSE()< 0. I did not find occurrences of possible double-closed files on the way.
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
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* memory.c: safer file handling
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*
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* Copyright (C) 2010 IBM Corporation
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* Copyright (C) 2010 Stefan Berger
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* Copyright (C) 2010 RedHat, Inc.
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* Copyright (C) 2010 Eric Blake
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*
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* This 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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*
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* This 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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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <config.h>
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#include <unistd.h>
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#include "files.h"
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int virClose(int *fdptr, bool preserve_errno)
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{
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int saved_errno;
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int rc = 0;
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if (*fdptr >= 0) {
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if (preserve_errno)
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saved_errno = errno;
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rc = close(*fdptr);
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*fdptr = -1;
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if (preserve_errno)
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errno = saved_errno;
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}
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return rc;
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}
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int virFclose(FILE **file, bool preserve_errno)
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{
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int saved_errno;
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int rc = 0;
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if (*file) {
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if (preserve_errno)
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saved_errno = errno;
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rc = fclose(*file);
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*file = NULL;
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if (preserve_errno)
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errno = saved_errno;
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}
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return rc;
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}
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FILE *virFdopen(int *fdptr, const char *mode)
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{
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FILE *file = NULL;
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if (*fdptr >= 0) {
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file = fdopen(*fdptr, mode);
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if (file)
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*fdptr = -1;
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} else {
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errno = EBADF;
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}
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return file;
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}
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