11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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***/
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#include <sys/mman.h>
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#include "fd-util.h"
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#include "sigbus.h"
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#include "util.h"
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#if HAVE_VALGRIND_VALGRIND_H
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#include <valgrind/valgrind.h>
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#endif
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int main(int argc, char *argv[]) {
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_cleanup_close_ int fd = -1;
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char template[] = "/tmp/sigbus-test-XXXXXX";
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void *addr = NULL;
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uint8_t *p;
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#if HAVE_VALGRIND_VALGRIND_H
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if (RUNNING_ON_VALGRIND)
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return EXIT_TEST_SKIP;
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#endif
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#ifdef __SANITIZE_ADDRESS__
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return EXIT_TEST_SKIP;
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#endif
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sigbus_install();
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assert_se(sigbus_pop(&addr) == 0);
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assert_se((fd = mkostemp(template, O_RDWR|O_CREAT|O_EXCL)) >= 0);
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assert_se(unlink(template) >= 0);
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assert_se(posix_fallocate(fd, 0, page_size() * 8) >= 0);
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p = mmap(NULL, page_size() * 16, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
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assert_se(p != MAP_FAILED);
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assert_se(sigbus_pop(&addr) == 0);
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p[0] = 0xFF;
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assert_se(sigbus_pop(&addr) == 0);
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p[page_size()] = 0xFF;
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assert_se(sigbus_pop(&addr) == 0);
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p[page_size()*8] = 0xFF;
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p[page_size()*8+1] = 0xFF;
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p[page_size()*10] = 0xFF;
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assert_se(sigbus_pop(&addr) > 0);
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assert_se(addr == p + page_size() * 8);
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assert_se(sigbus_pop(&addr) > 0);
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assert_se(addr == p + page_size() * 10);
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assert_se(sigbus_pop(&addr) == 0);
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sigbus_reset();
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}
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