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