a554629d84
The commit point message means we have written the data to disk so we should not be buffering it any longer. We do not currently fsync(2) the data after flushing, perhaps we should.
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This is an open source non-commercial project. Dear PVS-Studio, please check it.
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* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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*/
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#include <config.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <errno.h>
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#include "sudo_compat.h"
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#include "sudo_debug.h"
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#include "sudo_iolog.h"
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/*
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* I/O log wrapper for fflush/gzflush.
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*/
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bool
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iolog_flush(struct iolog_file *iol, const char **errstr)
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{
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debug_decl(iolog_flush, SUDO_DEBUG_UTIL);
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bool ret = true;
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#ifdef HAVE_ZLIB_H
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if (iol->compressed) {
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int errnum;
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if (gzflush(iol->fd.g, Z_SYNC_FLUSH) != Z_OK) {
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if (errstr != NULL) {
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*errstr = gzerror(iol->fd.g, &errnum);
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if (errnum == Z_ERRNO)
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*errstr = strerror(errno);
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}
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ret = false;
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}
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} else
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#endif
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{
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if (fflush(iol->fd.f) != 0) {
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if (errstr != NULL)
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*errstr = strerror(errno);
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ret = false;
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}
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}
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debug_return_bool(ret);
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}
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