Dmitry V. Levin
c1f1cc1b4c
This code used in two different places, so move it to the library. * tests/overflowuid.c: New file. * tests/Makefile.am (libtests_a_SOURCES): Add it. * tests/tests.h (check_overflowuid, check_overflowgid): New prototypes. * tests/uid.c (main): Use check_overflowuid. * tests/uid16.c (main): Likewise.
82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/*
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* Copyright (c) 2014-2016 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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#include "tests.h"
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#include <sys/syscall.h>
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#if (defined __NR_getuid || defined __NR_getxuid) \
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&& defined(__NR_setuid) \
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&& defined(__NR_getresuid) \
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&& defined(__NR_setreuid) \
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&& defined(__NR_setresuid) \
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&& defined(__NR_fchown) \
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&& defined(__NR_getgroups)
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# include <assert.h>
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# include <stdlib.h>
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# include <unistd.h>
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# include <fcntl.h>
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int
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main(void)
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{
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int uid;
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int size;
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int *list = 0;
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# ifndef __NR_getuid
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# define __NR_getuid __NR_getxuid
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# endif
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uid = syscall(__NR_getuid);
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check_overflowuid(uid);
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assert(syscall(__NR_setuid, uid) == 0);
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{
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/*
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* uids returned by getresuid should be ignored
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* to avoid 16bit vs 32bit issues.
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*/
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int r, e, s;
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assert(syscall(__NR_getresuid, &r, &e, &s) == 0);
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}
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assert(syscall(__NR_setreuid, -1, -1L) == 0);
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assert(syscall(__NR_setresuid, uid, -1, -1L) == 0);
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assert(syscall(__NR_fchown, 1, -1, -1L) == 0);
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assert((size = syscall(__NR_getgroups, 0, list)) >= 0);
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assert(list = calloc(size + 1, sizeof(*list)));
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assert(syscall(__NR_getgroups, size, list) == size);
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("(__NR_getuid || __NR_getxuid)"
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" && __NR_setuid && __NR_getresuid && __NR_setreuid"
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" && __NR_setresuid && __NR_fchown && __NR_getgroups")
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#endif
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