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/*
* Check decoding of setfsuid/setfsgid/setfsuid32/setfsgid32 syscalls.
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2016-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <stdio.h>
#include <unistd.h>
static void
printuid(unsigned UGID_TYPE id)
{
if (id == (unsigned UGID_TYPE) -1U)
printf("-1");
else
printf("%u", id);
}
int
main(void)
{
unsigned int ugid = GETUGID;
const kernel_ulong_t tests[] = {
ugid,
0xffff0000U | ugid,
F8ILL_KULONG_MASK | ugid,
0xffffU,
-1U,
-1L,
0xc0deffffU,
0xfacefeedU,
(long) 0xfacefeeddeadbeefULL
};
for (unsigned int i = 0; i < ARRAY_SIZE(tests); ++i) {
const unsigned int num = (unsigned UGID_TYPE) tests[i];
unsigned int rc;
rc = syscall(SYSCALL_NR, tests[i]);
printf("%s(", SYSCALL_NAME);
printuid(num);
printf(") = %u\n", rc);
rc = syscall(SYSCALL_NR, ugid);
printf("%s(%u) = %u\n", SYSCALL_NAME, ugid, rc);
}
puts("+++ exited with 0 +++");
return 0;
}
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