usr/src/lib/libbsm/common/audit_allocate.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #include <sys/types.h>
  27 #include <bsm/audit.h>
  28 #include <bsm/libbsm.h>
  29 #include <bsm/audit_private.h>
  30 #include <unistd.h>
  31 #include <string.h>
  32 #include <bsm/audit_uevents.h>
  33 #include <generic.h>
  34 #include <stdlib.h>
  35 #include <alloca.h>
  36
  37 static int s_audit;     /* successful audit event */
  38 static int f_audit;     /* failure audit event */
  39
  40 static int ad;          /* audit descriptor */
  41
  42 void
  43 audit_allocate_argv(flg, argc, argv)
  44         int   flg;
  45         int   argc;
  46         char *argv[];
  47 {
  48         int i;
  49
  50         if (cannot_audit(0)) {
  51                 return;
  52         }
  53
  54         switch (flg) {
  55         case 0:
  56                 s_audit = AUE_allocate_succ;
  57                 f_audit = AUE_allocate_fail;
  58                 break;
  59         case 1:
  60                 s_audit = AUE_deallocate_succ;
  61                 f_audit = AUE_deallocate_fail;
  62                 break;
  63         case 2:
  64                 s_audit = AUE_listdevice_succ;
  65                 f_audit = AUE_listdevice_fail;
  66                 break;
  67         }
  68
  69         ad = au_open();
  70
  71         for (i = 0; i < argc; i++)
  72                 (void) au_write(ad, au_to_text(argv[i]));
  73 }
  74
  75 void
  76 audit_allocate_device(path)
  77         char *path;
  78 {
  79         if (cannot_audit(0)) {
  80                 return;
  81         }
  82         (void) au_write(ad, au_to_path(path));
  83 }
  84
  85 int
  86 audit_allocate_record(status)
  87         char    status;         /* success failure of operation */
  88 {
  89         auditinfo_addr_t mask;          /* audit ID */
  90         au_event_t      event;          /* audit event number */
  91         uint32_t        policy;         /* audit policy */
  92         int             ng;             /* number of groups in process */
  93
  94 #ifdef DEBUG
  95         (void) printf("audit_allocate_record(%d)\n", status);
  96 #endif
  97
  98         if (cannot_audit(0)) {
  99                 return (0);
 100         }
 101
 102         if (getaudit_addr(&mask, sizeof (mask)) < 0) {
 103                 if (!status)
 104                         return (1);
 105                 return (0);
 106         }
 107
 108         if (auditon(A_GETPOLICY, (caddr_t)&policy, 0) < 0) {
 109                 if (!status)
 110                         return (1);
 111                 return (0);
 112         }
 113
 114
 115                 /* determine if we're preselected */
 116         if (status)
 117                 event = f_audit;
 118         else
 119                 event = s_audit;
 120
 121         if (au_preselect(event, &mask.ai_mask, AU_PRS_BOTH, AU_PRS_REREAD)
 122                 == NULL)
 123                 return (0);
 124
 125         (void) au_write(ad, au_to_me());        /* add subject token */
 126         if (policy & AUDIT_GROUP) {     /* add optional group token */
 127                 gid_t   *grplst;
 128                 int     maxgrp = getgroups(0, NULL);
 129
 130                 grplst = alloca(maxgrp * sizeof (gid_t));
 131
 132                 if ((ng = getgroups(maxgrp, grplst)) < 0) {
 133                         (void) au_close(ad, 0, 0);
 134                         if (!status)
 135                                 return (1);
 136                         return (0);
 137                 }
 138                 (void) au_write(ad, au_to_newgroups(ng, grplst));
 139         }
 140
 141         if (status)
 142                 (void) au_write(ad, au_to_exit(status, -1));
 143         else
 144                 (void) au_write(ad, au_to_exit(0, 0));
 145
 146                 /* write audit record */
 147         if (au_close(ad, 1, event) < 0) {
 148                 (void) au_close(ad, 0, 0);
 149                 if (!status)
 150                         return (1);
 151         }
 152
 153         return (0);
 154 }
 155
 156 void
 157 audit_allocate_list(list)
 158         char *list;
 159 {
 160         char *buf;
 161         char *file;
 162         char *last;
 163
 164         if (cannot_audit(0)) {
 165                 return;
 166         }
 167
 168         if ((buf = strdup(list)) == NULL)
 169                 return;
 170
 171         for (file = strtok_r(buf, " ", &last); file;
 172             file = strtok_r(NULL, " ", &last))
 173                 (void) au_write(ad, au_to_path(file));
 174
 175         free(buf);
 176 }