Home | History | Annotate | Download | only in tests-mx32 
      1 /*
      2  * Check decoding of setuid/setgid/setuid32/setgid32 syscalls.
      3  *
      4  * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org>
      5  * Copyright (c) 2016-2018 The strace developers.
      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 author 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 AUTHOR ``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 AUTHOR 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 #include <errno.h>
     32 #include <stdio.h>
     33 #include <unistd.h>
     34 
     35 void
     36 printuid(unsigned UGID_TYPE id)
     37 {
     38 	if (id == (unsigned UGID_TYPE) -1U)
     39 		printf("-1");
     40 	else
     41 		printf("%u", id);
     42 }
     43 
     44 int
     45 main(void)
     46 {
     47 	unsigned int ugid = GETUGID;
     48 	CHECK_OVERFLOWUGID(ugid);
     49 
     50 	const long tests[] = {
     51 		ugid,
     52 		0xffff0000U | ugid,
     53 		(unsigned long) 0xffffffff00000000ULL | ugid,
     54 		0xffffU,
     55 		-1U,
     56 		-1L
     57 	};
     58 
     59 	unsigned int i;
     60 
     61 	for (i = 0; i < ARRAY_SIZE(tests); ++i) {
     62 		const unsigned int num = (unsigned UGID_TYPE) tests[i];
     63 		long expected;
     64 
     65 		errno = 0;
     66 
     67 		if (num == ugid)
     68 			expected = 0;
     69 		else if ((UGID_TYPE) num == (UGID_TYPE) -1U)
     70 			expected = -1;
     71 		else
     72 			continue;
     73 
     74 		const long rc = syscall(SYSCALL_NR, tests[i]);
     75 		const char *errstr = sprintrc(rc);
     76 
     77 		if (rc != expected) {
     78 			if (!i && ENOSYS == errno) {
     79 				printf("%s(%u) = %s\n",
     80 				       SYSCALL_NAME, ugid, errstr);
     81 				break;
     82 			}
     83 			perror_msg_and_fail("%s(%#lx) = %ld != %ld",
     84 					    SYSCALL_NAME, tests[i],
     85 					    rc, expected);
     86 		}
     87 
     88 		printf("%s(", SYSCALL_NAME);
     89 		printuid(num);
     90 		printf(") = %s\n", errstr);
     91 	}
     92 
     93 	puts("+++ exited with 0 +++");
     94 	return 0;
     95 }
     96