2 * Check decoding of setfsuid/setfsgid/setfsuid32/setfsgid32 syscalls.
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 printuid(unsigned UGID_TYPE id)
36 if (id == (unsigned UGID_TYPE) -1U)
45 unsigned int ugid = GETUGID;
47 const kernel_ulong_t tests[] = {
50 F8ILL_KULONG_MASK | ugid,
56 (long) 0xfacefeeddeadbeefULL
61 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
62 const unsigned int num = (unsigned UGID_TYPE) tests[i];
65 rc = syscall(SYSCALL_NR, tests[i]);
66 printf("%s(", SYSCALL_NAME);
68 printf(") = %u\n", rc);
70 rc = syscall(SYSCALL_NR, ugid);
71 printf("%s(%u) = %u\n", SYSCALL_NAME, ugid, rc);
74 puts("+++ exited with 0 +++");