blob: ca35848533b4f7634cf3c2eb7808ff117edf006e [file] [log] [blame]
/*
* Check decoding of setgroups/setgroups32 syscalls.
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef __NR_setgroups32
# define SYSCALL_NR __NR_setgroups32
# define SYSCALL_NAME "setgroups32"
# define GID_TYPE unsigned int
#else
# include "tests.h"
# include <sys/syscall.h>
# ifdef __NR_setgroups
# define SYSCALL_NR __NR_setgroups
# define SYSCALL_NAME "setgroups"
# if defined __NR_setgroups32 && __NR_setgroups != __NR_setgroups32
# define GID_TYPE unsigned short
# else
# define GID_TYPE unsigned int
# endif
# endif
#endif
#ifdef GID_TYPE
# include <errno.h>
# include <stdio.h>
# include <unistd.h>
static const char *
errno2str(void)
{
switch (errno) {
#define CASE(x) case x: return #x
CASE(EPERM);
CASE(EINVAL);
CASE(ENOMEM);
CASE(EFAULT);
default: perror_msg_and_fail(SYSCALL_NAME);
}
}
int
main(void)
{
/* check how the first argument is decoded */
if (syscall(SYSCALL_NR, 0, 0))
printf("%s(0, NULL) = -1 %s (%m)\n", SYSCALL_NAME, errno2str());
else
printf("%s(0, NULL) = 0\n", SYSCALL_NAME);
if (syscall(SYSCALL_NR, (long) 0xffffffff00000000ULL, 0))
printf("%s(0, NULL) = -1 %s (%m)\n",
SYSCALL_NAME, errno2str());
else
printf("%s(0, NULL) = 0\n", SYSCALL_NAME);
syscall(SYSCALL_NR, 1, 0);
printf("%s(1, NULL) = -1 %s (%m)\n", SYSCALL_NAME, errno2str());
syscall(SYSCALL_NR, (long) 0xffffffff00000001ULL, 0);
printf("%s(1, NULL) = -1 %s (%m)\n", SYSCALL_NAME, errno2str());
syscall(SYSCALL_NR, -1U, 0);
printf("%s(%u, NULL) = -1 %s (%m)\n", SYSCALL_NAME, -1U, errno2str());
syscall(SYSCALL_NR, -1L, 0);
printf("%s(%u, NULL) = -1 %s (%m)\n", SYSCALL_NAME, -1U, errno2str());
/* check how the second argument is decoded */
const GID_TYPE *const g1 = tail_alloc(sizeof(*g1));
GID_TYPE *const g2 = tail_alloc(sizeof(*g2) * 2);
GID_TYPE *const g3 = tail_alloc(sizeof(*g3) * 3);
(void) tail_alloc(1);
if (syscall(SYSCALL_NR, 0, g1 + 1))
printf("%s(0, []) = -1 %s (%m)\n",
SYSCALL_NAME, errno2str());
else
printf("%s(0, []) = 0\n", SYSCALL_NAME);
if (syscall(SYSCALL_NR, 1, g1))
printf("%s(1, [%u]) = -1 %s (%m)\n",
SYSCALL_NAME, (unsigned) *g1, errno2str());
else
printf("%s(1, [%u]) = 0\n",
SYSCALL_NAME, (unsigned) *g1);
syscall(SYSCALL_NR, 1, g1 + 1);
printf("%s(1, %p) = -1 %s (%m)\n",
SYSCALL_NAME, g1 + 1, errno2str());
syscall(SYSCALL_NR, 1, -1L);
printf("%s(1, %#lx) = -1 %s (%m)\n", SYSCALL_NAME, -1L, errno2str());
syscall(SYSCALL_NR, 2, g1);
printf("%s(2, [%u, %p]) = -1 %s (%m)\n",
SYSCALL_NAME, (unsigned) *g1, g1 + 1, errno2str());
g2[0] = -2;
g2[1] = -3;
if (syscall(SYSCALL_NR, 2, g2))
printf("%s(2, [%u, %u]) = -1 %s (%m)\n", SYSCALL_NAME,
(unsigned) g2[0], (unsigned) g2[1], errno2str());
else
printf("%s(2, [%u, %u]) = 0\n", SYSCALL_NAME,
(unsigned) g2[0], (unsigned) g2[1]);
syscall(SYSCALL_NR, 3, g2);
printf("%s(3, [%u, %u, %p]) = -1 %s (%m)\n", SYSCALL_NAME,
(unsigned) g2[0], (unsigned) g2[1], g2 + 2, errno2str());
g3[0] = 0;
g3[1] = 1;
if (syscall(SYSCALL_NR, 3, g3))
printf("%s(3, [%u, %u, ...]) = -1 %s (%m)\n", SYSCALL_NAME,
(unsigned) g3[0], (unsigned) g3[1], errno2str());
else
printf("%s(3, [%u, %u]) = 0\n", SYSCALL_NAME,
(unsigned) g3[0], (unsigned) g3[1]);
syscall(SYSCALL_NR, 4, g3);
printf("%s(4, [%u, %u, ...]) = -1 %s (%m)\n", SYSCALL_NAME,
(unsigned) g3[0], (unsigned) g3[1], errno2str());
long rc = sysconf(_SC_NGROUPS_MAX);
const unsigned ngroups_max = rc;
if ((unsigned long) rc == ngroups_max && (int) ngroups_max > 0) {
syscall(SYSCALL_NR, ngroups_max, g3);
printf("%s(%u, [%u, %u, ...]) = -1 %s (%m)\n", SYSCALL_NAME,
ngroups_max, (unsigned) g3[0], (unsigned) g3[1],
errno2str());
const unsigned long size =
(unsigned long) 0xffffffff00000000ULL | ngroups_max;
syscall(SYSCALL_NR, size, g3);
printf("%s(%u, [%u, %u, ...]) = -1 %s (%m)\n", SYSCALL_NAME,
ngroups_max, (unsigned) g3[0], (unsigned) g3[1],
errno2str());
syscall(SYSCALL_NR, ngroups_max + 1, g3);
printf("%s(%u, %p) = -1 %s (%m)\n", SYSCALL_NAME,
ngroups_max + 1, g3, errno2str());
}
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_setgroups")
#endif