b26fa1a2fb
This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/***
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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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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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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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(fallocate(fd, 0, 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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