tools/regression/priv/priv_vfs_chflags.c

   1 /*-
   2  * Copyright (c) 2006 nCircle Network Security, Inc.
   3  * Copyright (c) 2007 Robert N. M. Watson
   4  * All rights reserved.
   5  *
   6  * This software was developed by Robert N. M. Watson for the TrustedBSD
   7  * Project under contract to nCircle Network Security, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR, NCIRCLE NETWORK SECURITY,
  22  * INC., OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  24  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  25  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  26  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  27  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 /*
  32  * Test privileges associated with setting file flags on files; whether or
  33  * not it requires privilege depends on the flag, and some flags cannot be
  34  * set in jail at all.
  35  */
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39
  40 #include <err.h>
  41 #include <errno.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <unistd.h>
  45
  46 #include "main.h"
  47
  48 static char fpath[1024];
  49 static int fpath_initialized;
  50
  51 /*
  52  * For chflags, we consider three dimmensions: process owner, file owner, and
  53  * flag type.  The calling framework handles variations in process owner; the
  54  * rest are handled via multiple tests.  One cleanup function is used.
  55  */
  56 static u_long
  57 getflags(char *fpathp)
  58 {
  59         struct stat sb;
  60
  61         if (stat(fpathp, &sb) < 0)
  62                 err(-1, "stat(%s)", fpathp);
  63
  64         return (sb.st_flags);
  65 }
  66
  67 int
  68 priv_vfs_chflags_froot_setup(int asroot, int injail, struct test *test)
  69 {
  70
  71         setup_file("priv_vfs_chflags_froot_setup: fpath", fpath, UID_ROOT,
  72             GID_WHEEL, 0600);
  73         fpath_initialized = 1;
  74         return (0);
  75 }
  76
  77 int
  78 priv_vfs_chflags_fowner_setup(int asroot, int injail,
  79     struct test *test)
  80 {
  81
  82         setup_file("priv_vfs_chflags_fowner_setup: fpath", fpath, UID_OWNER,
  83             GID_OWNER, 0600);
  84         fpath_initialized = 1;
  85         return (0);
  86 }
  87
  88 int
  89 priv_vfs_chflags_fother_setup(int asroot, int injail,
  90     struct test *test)
  91 {
  92
  93         setup_file("priv_vfs_chflags_fowner_setup: fpath", fpath, UID_OTHER,
  94             GID_OTHER, 0600);
  95         fpath_initialized = 1;
  96         return (0);
  97 }
  98
  99 void
 100 priv_vfs_chflags_froot_uflags(int asroot, int injail,
 101     struct test *test)
 102 {
 103         u_long flags;
 104         int error;
 105
 106         flags = getflags(fpath);
 107         flags |= UF_NODUMP;
 108         error = chflags(fpath, flags);
 109         if (asroot && injail)
 110                 expect("priv_vfs_chflags_froot_uflags(asroot, injail)",
 111                     error, 0, 0);
 112         if (asroot && !injail)
 113                 expect("priv_vfs_chflags_froot_uflags(asroot, !injail)",
 114                     error, 0, 0);
 115         if (!asroot && injail)
 116                 expect("priv_vfs_chflags_froot_uflags(!asroot, injail)",
 117                     error, -1, EPERM);
 118         if (!asroot && !injail)
 119                 expect("priv_vfs_chflags_froot_uflags(!asroot, !injail)",
 120                     error, -1, EPERM);
 121 }
 122
 123 void
 124 priv_vfs_chflags_fowner_uflags(int asroot, int injail,
 125     struct test *test)
 126 {
 127         u_long flags;
 128         int error;
 129
 130         flags = getflags(fpath);
 131         flags |= UF_NODUMP;
 132         error = chflags(fpath, flags);
 133         if (asroot && injail)
 134                 expect("priv_vfs_chflags_fowner_uflags(asroot, injail)",
 135                     error, 0, 0);
 136         if (asroot && !injail)
 137                 expect("priv_vfs_chflags_fowner_uflags(asroot, !injail)",
 138                     error, 0, 0);
 139         if (!asroot && injail)
 140                 expect("priv_vfs_chflags_fowner_uflags(!asroot, injail)",
 141                     error, 0, 0);
 142         if (!asroot && !injail)
 143                 expect("priv_vfs_chflags_fowner_uflags(!asroot, !injail)",
 144                     error, 0, 0);
 145 }
 146
 147 void
 148 priv_vfs_chflags_fother_uflags(int asroot, int injail,
 149     struct test *test)
 150 {
 151         u_long flags;
 152         int error;
 153
 154         flags = getflags(fpath);
 155         flags |= UF_NODUMP;
 156         error = chflags(fpath, flags);
 157         if (asroot && injail)
 158                 expect("priv_vfs_chflags_fother_uflags(asroot, injail)",
 159                     error, 0, 0);
 160         if (asroot && !injail)
 161                 expect("priv_vfs_chflags_fother_uflags(asroot, !injail)",
 162                     error, 0, 0);
 163         if (!asroot && injail)
 164                 expect("priv_vfs_chflags_fother_uflags(!asroot, injail)",
 165                     error, -1, EPERM);
 166         if (!asroot && !injail)
 167                 expect("priv_vfs_chflags_fother_uflags(!asroot, !injail)",
 168                     error, -1, EPERM);
 169 }
 170
 171 void
 172 priv_vfs_chflags_froot_sflags(int asroot, int injail,
 173     struct test *test)
 174 {
 175         u_long flags;
 176         int error;
 177
 178         flags = getflags(fpath);
 179         flags |= SF_ARCHIVED;
 180         error = chflags(fpath, flags);
 181         if (asroot && injail)
 182                 expect("priv_vfs_chflags_froot_sflags(asroot, injail)",
 183                     error, -1, EPERM);
 184         if (asroot && !injail)
 185                 expect("priv_vfs_chflags_froot_sflags(asroot, !injail)",
 186                     error, 0, 0);
 187         if (!asroot && injail)
 188                 expect("priv_vfs_chflags_froot_sflags(!asroot, injail)",
 189                     error, -1, EPERM);
 190         if (!asroot && !injail)
 191                 expect("priv_vfs_chflags_froot_sflags(!asroot, !injail)",
 192                     error, -1, EPERM);
 193 }
 194
 195 void
 196 priv_vfs_chflags_fowner_sflags(int asroot, int injail,
 197     struct test *test)
 198 {
 199         u_long flags;
 200         int error;
 201
 202         flags = getflags(fpath);
 203         flags |= SF_ARCHIVED;
 204         error = chflags(fpath, flags);
 205         if (asroot && injail)
 206                 expect("priv_vfs_chflags_fowner_sflags(asroot, injail)",
 207                     error, -1, EPERM);
 208         if (asroot && !injail)
 209                 expect("priv_vfs_chflags_fowner_sflags(asroot, !injail)",
 210                     error, 0, 0);
 211         if (!asroot && injail)
 212                 expect("priv_vfs_chflags_fowner_sflags(!asroot, injail)",
 213                     error, -1, EPERM);
 214         if (!asroot && !injail)
 215                 expect("priv_vfs_chflags_fowner_sflags(!asroot, !injail)",
 216                     error, -1, EPERM);
 217 }
 218
 219 void
 220 priv_vfs_chflags_fother_sflags(int asroot, int injail,
 221     struct test *test)
 222 {
 223         u_long flags;
 224         int error;
 225
 226         flags = getflags(fpath);
 227         flags |= SF_ARCHIVED;
 228         error = chflags(fpath, flags);
 229         if (asroot && injail)
 230                 expect("priv_vfs_chflags_fother_sflags(asroot, injail)",
 231                     error, -1, EPERM);
 232         if (asroot && !injail)
 233                 expect("priv_vfs_chflags_fother_sflags(asroot, !injail)",
 234                     error, 0, 0);
 235         if (!asroot && injail)
 236                 expect("priv_vfs_chflags_fother_sflags(!asroot, injail)",
 237                     error, -1, EPERM);
 238         if (!asroot && !injail)
 239                 expect("priv_vfs_chflags_fother_sflags(!asroot, !injail)",
 240                     error, -1, EPERM);
 241 }
 242
 243 void
 244 priv_vfs_chflags_cleanup(int asroot, int injail, struct test *test)
 245 {
 246
 247         if (fpath_initialized) {
 248                 (void)chflags(fpath, 0);
 249                 (void)unlink(fpath);
 250                 fpath_initialized = 0;
 251         }
 252 }