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.
203 lines
3.9 KiB
C
203 lines
3.9 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2009-2021 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 <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_STDBOOL_H
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# include <stdbool.h>
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#else
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# include "compat/stdbool.h"
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#endif
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#include "pathnames.h"
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#include "sudo_compat.h"
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#include "sudo_debug.h"
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#include "sudo_util.h"
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#include "sudo_iolog.h"
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static unsigned int sessid_max = SESSID_MAX;
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static mode_t iolog_filemode = S_IRUSR|S_IWUSR;
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static mode_t iolog_dirmode = S_IRWXU;
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static uid_t iolog_uid = ROOT_UID;
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static gid_t iolog_gid = ROOT_GID;
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static bool iolog_gid_set;
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static bool iolog_docompress;
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static bool iolog_doflush;
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/*
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* Reset I/O log settings to default values.
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*/
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void
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iolog_set_defaults(void)
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{
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sessid_max = SESSID_MAX;
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iolog_filemode = S_IRUSR|S_IWUSR;
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iolog_dirmode = S_IRWXU;
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iolog_uid = ROOT_UID;
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iolog_gid = ROOT_GID;
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iolog_gid_set = false;
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iolog_docompress = false;
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iolog_doflush = false;
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}
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/*
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* Set max sequence number (aka session ID)
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*/
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void
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iolog_set_maxseq(unsigned int newval)
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{
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debug_decl(iolog_set_maxseq, SUDO_DEBUG_UTIL);
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/* Clamp to SESSID_MAX as documented. */
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if (newval > SESSID_MAX)
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newval = SESSID_MAX;
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sessid_max = newval;
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debug_return;
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}
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/*
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* Set iolog_uid (and iolog_gid if gid not explicitly set).
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*/
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void
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iolog_set_owner(uid_t uid, gid_t gid)
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{
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debug_decl(iolog_set_owner, SUDO_DEBUG_UTIL);
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iolog_uid = uid;
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if (!iolog_gid_set)
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iolog_gid = gid;
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debug_return;
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}
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/*
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* Set iolog_gid.
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*/
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void
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iolog_set_gid(gid_t gid)
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{
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debug_decl(iolog_set_gid, SUDO_DEBUG_UTIL);
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iolog_gid = gid;
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iolog_gid_set = true;
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debug_return;
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}
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/*
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* Set iolog_filemode and iolog_dirmode.
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*/
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void
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iolog_set_mode(mode_t mode)
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{
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debug_decl(iolog_set_mode, SUDO_DEBUG_UTIL);
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/* I/O log files must be readable and writable by owner. */
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iolog_filemode = S_IRUSR|S_IWUSR;
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/* Add in group and other read/write if specified. */
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iolog_filemode |= mode & (S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
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/* For directory mode, add execute bits as needed. */
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iolog_dirmode = iolog_filemode | S_IXUSR;
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if (iolog_dirmode & (S_IRGRP|S_IWGRP))
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iolog_dirmode |= S_IXGRP;
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if (iolog_dirmode & (S_IROTH|S_IWOTH))
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iolog_dirmode |= S_IXOTH;
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debug_return;
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}
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/*
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* Set iolog_docompress
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*/
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void
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iolog_set_compress(bool newval)
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{
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debug_decl(iolog_set_compress, SUDO_DEBUG_UTIL);
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iolog_docompress = newval;
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debug_return;
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}
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/*
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* Set iolog_doflush
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*/
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void
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iolog_set_flush(bool newval)
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{
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debug_decl(iolog_set_flush, SUDO_DEBUG_UTIL);
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iolog_doflush = newval;
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debug_return;
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}
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/*
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* Getters.
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*/
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unsigned int
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iolog_get_maxseq(void)
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{
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return sessid_max;
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}
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uid_t
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iolog_get_uid(void)
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{
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return iolog_uid;
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}
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gid_t
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iolog_get_gid(void)
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{
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return iolog_gid;
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}
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mode_t
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iolog_get_file_mode(void)
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{
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return iolog_filemode;
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}
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mode_t
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iolog_get_dir_mode(void)
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{
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return iolog_dirmode;
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}
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bool
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iolog_get_compress(void)
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{
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return iolog_docompress;
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}
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bool
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iolog_get_flush(void)
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{
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return iolog_doflush;
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}
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