verified_exec.h revision 1.51
1 /* $NetBSD: verified_exec.h,v 1.51 2007/01/09 12:49:37 elad Exp $ */ 2 3 /*- 4 * Copyright (c) 2005, 2006 Elad Efrat <elad (at) NetBSD.org> 5 * Copyright (c) 2005, 2006 Brett Lymn <blymn (at) NetBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the authors may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _SYS_VERIFIED_EXEC_H_ 32 #define _SYS_VERIFIED_EXEC_H_ 33 34 #include <sys/cdefs.h> 35 #include <sys/param.h> 36 #include <sys/ioctl.h> 37 38 #if defined(_KERNEL) && !defined(HAVE_NBTOOL_CONFIG_H) 39 #include <sys/malloc.h> 40 #include <uvm/uvm_extern.h> 41 #include <uvm/uvm_pglist.h> 42 #include <uvm/uvm_page.h> 43 #include <prop/proplib.h> 44 #endif /* _KERNEL */ 45 46 /* Flags for a Veriexec entry. These can be OR'd together. */ 47 #define VERIEXEC_DIRECT 0x01 /* Direct execution (exec) */ 48 #define VERIEXEC_INDIRECT 0x02 /* Indirect execution (#!) */ 49 #define VERIEXEC_FILE 0x04 /* Plain file (open) */ 50 #define VERIEXEC_UNTRUSTED 0x10 /* Untrusted storage */ 51 52 /* Operations for /dev/veriexec. */ 53 #define VERIEXEC_LOAD _IOW('X', 0x1, struct plistref) 54 #define VERIEXEC_TABLESIZE _IOW('X', 0x2, struct plistref) 55 #define VERIEXEC_DELETE _IOW('X', 0x3, struct plistref) 56 #define VERIEXEC_QUERY _IOWR('X', 0x4, struct plistref) 57 58 /* Veriexec modes (strict levels). */ 59 #define VERIEXEC_LEARNING 0 /* Learning mode. */ 60 #define VERIEXEC_IDS 1 /* Intrusion detection mode. */ 61 #define VERIEXEC_IPS 2 /* Intrusion prevention mode. */ 62 #define VERIEXEC_LOCKDOWN 3 /* Lockdown mode. */ 63 64 /* Valid status field values. */ 65 #define FINGERPRINT_NOTEVAL 0 /* fingerprint has not been evaluated */ 66 #define FINGERPRINT_VALID 1 /* fingerprint evaluated and matches list */ 67 #define FINGERPRINT_NOMATCH 2 /* fingerprint evaluated but does not match */ 68 69 /* Per-page fingerprint status. */ 70 #define PAGE_FP_NONE 0 /* no per-page fingerprints. */ 71 #define PAGE_FP_READY 1 /* per-page fingerprints ready for use. */ 72 #define PAGE_FP_FAIL 2 /* mismatch in per-page fingerprints. */ 73 74 /* 75 * Operations vector for verified exec, this defines the characteristics 76 * for the fingerprint type. 77 * Function types: init, update, final. 78 */ 79 typedef void (*veriexec_fpop_init_t)(void *); 80 typedef void (*veriexec_fpop_update_t)(void *, u_char *, u_int); 81 typedef void (*veriexec_fpop_final_t)(u_char *, void *); 82 83 #if defined(_KERNEL) && !defined(HAVE_NBTOOL_CONFIG_H) 84 MALLOC_DECLARE(M_VERIEXEC); 85 86 extern int veriexec_verbose; 87 extern int veriexec_strict; 88 89 /* Readable values for veriexec_report(). */ 90 #define REPORT_ALWAYS 0x01 /* Always print */ 91 #define REPORT_VERBOSE 0x02 /* Print when verbose >= 1 */ 92 #define REPORT_DEBUG 0x04 /* Print when verbose >= 2 (debug) */ 93 #define REPORT_PANIC 0x08 /* Call panic() */ 94 #define REPORT_ALARM 0x10 /* Alarm - also print pid/uid/.. */ 95 #define REPORT_LOGMASK (REPORT_ALWAYS|REPORT_VERBOSE|REPORT_DEBUG) 96 97 void veriexecattach(struct device *, struct device *, void *); 98 int veriexecopen(dev_t, int, int, struct lwp *); 99 int veriexecclose(dev_t, int, int, struct lwp *); 100 int veriexecioctl(dev_t, u_long, caddr_t, int, struct lwp *); 101 102 void veriexec_init(void); 103 int veriexec_fpops_add(const char *, size_t, size_t, veriexec_fpop_init_t, 104 veriexec_fpop_update_t, veriexec_fpop_final_t); 105 int veriexec_table_add(struct lwp *, prop_dictionary_t); 106 int veriexec_file_add(struct lwp *, prop_dictionary_t); 107 int veriexec_verify(struct lwp *, struct vnode *, const u_char *, int, 108 boolean_t *); 109 #ifdef notyet 110 int veriexec_page_verify(struct veriexec_file_entry *, struct vm_page *, 111 size_t, struct lwp *); 112 #endif /* notyet */ 113 boolean_t veriexec_lookup(struct vnode *); 114 int veriexec_file_delete(struct vnode *); 115 int veriexec_table_delete(struct mount *); 116 int veriexec_convert(struct vnode *, prop_dictionary_t); 117 void veriexec_report(const u_char *, const u_char *, struct lwp *, int); 118 void veriexec_purge(struct vnode *); 119 int veriexec_removechk(struct vnode *, const char *, struct lwp *l); 120 int veriexec_renamechk(struct vnode *, const char *, struct vnode *, 121 const char *, struct lwp *); 122 int veriexec_unmountchk(struct mount *); 123 int veriexec_openchk(struct lwp *, struct vnode *, const char *, int); 124 #endif /* _KERNEL */ 125 126 #endif /* !_SYS_VERIFIED_EXEC_H_ */ 127
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