mirror of
https://github.com/systemd/systemd.git
synced 2024-11-05 15:21:37 +03:00
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
|
|
* libudev - interface to udev device information
|
|
*
|
|
* Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stddef.h>
|
|
#include <stdarg.h>
|
|
#include <unistd.h>
|
|
#include <selinux/selinux.h>
|
|
|
|
#include "libudev.h"
|
|
#include "libudev-private.h"
|
|
|
|
static int selinux_enabled;
|
|
security_context_t selinux_prev_scontext;
|
|
|
|
void udev_selinux_init(struct udev *udev)
|
|
{
|
|
/* record the present security context */
|
|
selinux_enabled = (is_selinux_enabled() > 0);
|
|
info(udev, "selinux=%i\n", selinux_enabled);
|
|
if (!selinux_enabled)
|
|
return;
|
|
matchpathcon_init_prefix(NULL, udev_get_dev_path(udev));
|
|
if (getfscreatecon(&selinux_prev_scontext) < 0) {
|
|
err(udev, "getfscreatecon failed\n");
|
|
selinux_prev_scontext = NULL;
|
|
}
|
|
}
|
|
|
|
void udev_selinux_exit(struct udev *udev)
|
|
{
|
|
if (!selinux_enabled)
|
|
return;
|
|
freecon(selinux_prev_scontext);
|
|
selinux_prev_scontext = NULL;
|
|
}
|
|
|
|
void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode)
|
|
{
|
|
security_context_t scontext = NULL;
|
|
|
|
if (!selinux_enabled)
|
|
return;
|
|
if (matchpathcon(file, mode, &scontext) < 0) {
|
|
err(udev, "matchpathcon(%s) failed\n", file);
|
|
return;
|
|
}
|
|
if (lsetfilecon(file, scontext) < 0)
|
|
err(udev, "setfilecon %s failed: %m\n", file);
|
|
freecon(scontext);
|
|
}
|
|
|
|
void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode)
|
|
{
|
|
security_context_t scontext = NULL;
|
|
|
|
if (!selinux_enabled)
|
|
return;
|
|
if (matchpathcon(file, mode, &scontext) < 0) {
|
|
err(udev, "matchpathcon(%s) failed\n", file);
|
|
return;
|
|
}
|
|
if (setfscreatecon(scontext) < 0)
|
|
err(udev, "setfscreatecon %s failed: %m\n", file);
|
|
freecon(scontext);
|
|
}
|
|
|
|
void udev_selinux_resetfscreatecon(struct udev *udev)
|
|
{
|
|
if (!selinux_enabled)
|
|
return;
|
|
if (setfscreatecon(selinux_prev_scontext) < 0)
|
|
err(udev, "setfscreatecon failed: %m\n");
|
|
}
|