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systemd-stable/udev_selinux.h
pebenito@gentoo.org b55e654026 [PATCH] udev selinux fix
Here is a fix for the SELinux part of udev.

Setfscreatecon() overrides the default labeling behavior of SELinux when
creating files, so it should only be used for as short of a time as
possible, around the mknod or symlink calls.  Without this, the files in
udev_db get the wrong label because the fscreatecon is reset after the
udev_db file creation instead of before.  I'm guessing the Redhat people
missed this because they modify udev_db to be one big file instead of a
directory of small files (at least that's what I'm told).  I created
selinux_resetfscreatecon() to reset the fscreatecon asap after the
file/node is created.

Fixed a memory leak in selinux_init.  Getfscreatecon() allocates memory
for the context, and the udev code was immediately setting the pointer
(security_context_t is actually a typedef'ed char*) to NULL after the
call regardless of success/failure.  If you're wondering about the case
where there's effectively a setfscreatecon(NULL), this is ok, as its
used to tell SELinux to do the default labeling behavior.

Renamed selinux_restore() to selinux_exit() due to the changed behavior.

Fixed a couple of dbg() messages.
2005-04-26 23:39:48 -07:00

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1.4 KiB
C

/*
* udev_selinux.h
*
* Copyright (C) 2004 Daniel Walsh
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef _UDEV_SELINUX_H
#define _UDEV_SELINUX_H
#ifdef USE_SELINUX
extern void selinux_setfilecon(const char *file, const char *devname, unsigned int mode);
extern void selinux_setfscreatecon(const char *file, const char *devname, unsigned int mode);
extern void selinux_resetfscreatecon(void);
extern void selinux_init(void);
extern void selinux_exit(void);
#else
static inline void selinux_setfilecon(const char *file, const char *devname, unsigned int mode) {}
static inline void selinux_setfscreatecon(const char *file, const char *devname, unsigned int mode) {}
static inline void selinux_resetfscreatecon(void) {}
static inline void selinux_init(void) {}
static inline void selinux_exit(void) {}
#endif /* USE_SELINUX */
#endif /* _UDEV_USE_SELINUX */