uvm_swap_encrypt.h

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*      $OpenBSD: uvm_swap_encrypt.h,v 1.10 2015/05/06 04:00:10 dlg Exp $       */
    2 
    3 /*
    4  * Copyright 1999 Niels Provos <provos@citi.umich.edu>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. All advertising materials mentioning features or use of this software
   16  *    must display the following acknowledgement:
   17  *      This product includes software developed by Niels Provos.
   18  * 4. The name of the author may not be used to endorse or promote products
   19  *    derived from this software without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 #ifndef _UVM_SWAP_ENCRYPT_H
   34 #define _UVM_SWAP_ENCRYPT_H
   35 
   36 #define SWPENC_ENABLE   0
   37 #define SWPENC_CREATED  1
   38 #define SWPENC_DELETED  2
   39 #define SWPENC_MAXID    3
   40 
   41 #define CTL_SWPENC_NAMES { \
   42         { "enable", CTLTYPE_INT }, \
   43         { "keyscreated", CTLTYPE_INT }, \
   44         { "keysdeleted", CTLTYPE_INT }, \
   45 }
   46 
   47 #define SWAP_KEY_EXPIRE (120 /*60 * 60*/)       /* time after that keys expire */
   48 #define SWAP_KEY_SIZE   4               /* 128-bit keys */
   49 
   50 struct swap_key {
   51         u_int32_t key[SWAP_KEY_SIZE];   /* secret key for swap range */
   52         u_int16_t refcount;             /* pages that still need it */
   53 };
   54 
   55 int swap_encrypt_ctl(int *, u_int, void *, size_t *, void *, size_t,
   56                           struct proc *);
   57 
   58 void swap_encrypt(struct swap_key *,caddr_t, caddr_t, u_int64_t, size_t);
   59 void swap_decrypt(struct swap_key *,caddr_t, caddr_t, u_int64_t, size_t);
   60 
   61 void swap_key_cleanup(struct swap_key *);
   62 void swap_key_prepare(struct swap_key *, int);
   63 
   64 #define SWAP_KEY_GET(s,x)       do {                                    \
   65                                         if ((x)->refcount == 0) {       \
   66                                                 swap_key_create(x);     \
   67                                         }                               \
   68                                         (x)->refcount++;                \
   69                                 } while(0);
   70 
   71 #define SWAP_KEY_PUT(s,x)       do {                                    \
   72                                         (x)->refcount--;                \
   73                                         if ((x)->refcount == 0) {       \
   74                                                 swap_key_delete(x);     \
   75                                         }                               \
   76                                 } while(0);
   77 
   78 void swap_key_create(struct swap_key *);
   79 void swap_key_delete(struct swap_key *);
   80 
   81 extern int uvm_doswapencrypt;           /* swapencrypt enabled/disabled */
   82 extern int uvm_swprekeyprint;
   83 extern u_int uvm_swpkeyexpire;          /* expiry time for keys (tR) */
   84 extern int swap_encrypt_initialized;
   85 
   86 #endif /* _UVM_SWAP_ENCRYPT_H */

Cache object: 54501b65d74d96dbb628acf5835d8996

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/uvm/uvm_swap_encrypt.h

FreeBSD/Linux Kernel Cross Reference
sys/uvm/uvm_swap_encrypt.h