Dmitry V. Levin
0c8853c3c3
Automatically edit tests/*.c files using the following perl one-liner: perl -0777 -pi -e \ 's/#ifdef HAVE_CONFIG_H\n# include "config\.h"\n#endif\n*/#include "tests.h"\n/' \ tests/*.c
102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/*
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* Copyright (c) 2014-2015 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 <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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#include <sys/syscall.h>
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int
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main(void)
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{
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#if defined(__NR_getuid) \
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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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\
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&& defined(__NR_getuid32) \
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&& defined(__NR_setuid32) \
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&& defined(__NR_getresuid32) \
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&& defined(__NR_setreuid32) \
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&& defined(__NR_setresuid32) \
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&& defined(__NR_fchown32) \
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&& defined(__NR_getgroups32) \
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\
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&& __NR_getuid != __NR_getuid32 \
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&& __NR_setuid != __NR_setuid32 \
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&& __NR_getresuid != __NR_getresuid32 \
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&& __NR_setreuid != __NR_setreuid32 \
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&& __NR_setresuid != __NR_setresuid32 \
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&& __NR_fchown != __NR_fchown32 \
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&& __NR_getgroups != __NR_getgroups32 \
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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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uid = syscall(__NR_getuid);
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(void) close(0);
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if (open("/proc/sys/kernel/overflowuid", O_RDONLY) == 0) {
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/* we trust the kernel */
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char buf[sizeof(int)*3];
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int n = read(0, buf, sizeof(buf) - 1);
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if (n) {
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buf[n] = '\0';
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n = atoi(buf);
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if (uid == n)
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return 77;
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}
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close(0);
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}
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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, 0xffff) == 0);
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assert(syscall(__NR_setresuid, uid, -1, 0xffff) == 0);
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assert(syscall(__NR_fchown, 1, -1, 0xffff) == 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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#else
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return 77;
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#endif
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}
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