2c24c012bd
libmisc/copydir.c, lib/selinux.c: Move set_selinux_file_context() and reset_selinux_file_context() from libmisc/copydir.c to lib/selinux.c. * lib/commonio.c: Use set_selinux_file_context() and reset_selinux_file_context() instead of using the existing database SELinux context to set the context for the newly created files.
103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
/*
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* Copyright (c) 2011 , Peter Vrabec <pvrabec@redhat.com>
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* All rights reserved.
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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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* 3. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <config.h>
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#ifdef WITH_SELINUX
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#include "defines.h"
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#include <selinux/selinux.h>
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static bool selinux_checked = false;
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static bool selinux_enabled;
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/*
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* set_selinux_file_context - Set the security context before any file or
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* directory creation.
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*
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* set_selinux_file_context () should be called before any creation
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* of file, symlink, directory, ...
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*
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* Callers may have to Reset SELinux to create files with default
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* contexts with reset_selinux_file_context
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*/
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int set_selinux_file_context (const char *dst_name)
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{
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/*@null@*/security_context_t scontext = NULL;
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if (!selinux_checked) {
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selinux_enabled = is_selinux_enabled () > 0;
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selinux_checked = true;
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}
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if (selinux_enabled) {
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/* Get the default security context for this file */
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if (matchpathcon (dst_name, 0, &scontext) < 0) {
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if (security_getenforce () != 0) {
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return 1;
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}
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}
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/* Set the security context for the next created file */
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if (setfscreatecon (scontext) < 0) {
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if (security_getenforce () != 0) {
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return 1;
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}
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}
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freecon (scontext);
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}
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return 0;
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}
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/*
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* reset_selinux_file_context - Reset the security context to the default
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* policy behavior
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*
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* reset_selinux_file_context () should be called after the context
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* was changed with set_selinux_file_context ()
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*/
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int reset_selinux_file_context (void)
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{
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if (!selinux_checked) {
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selinux_enabled = is_selinux_enabled () > 0;
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selinux_checked = true;
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}
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if (selinux_enabled) {
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if (setfscreatecon (NULL) != 0) {
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return 1;
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}
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}
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return 0;
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}
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#else /* !WITH_SELINUX */
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extern int errno; /* warning: ANSI C forbids an empty source file */
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#endif /* !WITH_SELINUX */
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