Attachment 943729 Details for Bug 1149205 – test-catch-mprotect.c

test-catch-mprotect.c

test-catch-mprotect.c (text/x-csrc), 1.03 KB, created by Paulo Andrade on 2014-10-03 14:27:23 UTC

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Filename:

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Creator: Paulo Andrade

Created: 2014-10-03 14:27:23 UTC

Size: 1.03 KB

patch

obsolete

>#include <string.h>
>#include <unistd.h>
>#include <pthread.h>
>#include <sys/mman.h>
>
>#define SIZE			(4 * 1024 * 1024)
>
>int
>test(void)
>{
>    char	*buf;
>    buf = mmap(NULL, SIZE,
>		PROT_READ | PROT_WRITE,
>		MAP_PRIVATE | MAP_ANON, -1, 0);
>    if (buf == MAP_FAILED)
>	return -1;
>    memset(buf, 0x5a, SIZE);
>    mprotect(buf, SIZE, PROT_READ);
>    usleep(1000000);
>    munmap(buf, SIZE);
>    return 0;
>}
>
>int
>test_fork(void)
>{
>    int		status;
>    pid_t	pid = fork();
>
>    if (pid == 0)
>	waitpid(pid, &status, 0);
>    else
>	return test();
>    return 0;
>}
>
>int
>test_thread(void)
>{
>    void		*res;
>    pthread_attr_t	 attr;
>    pthread_t		 thread;
>
>    if (pthread_attr_init(&attr))
>	return -1;
>
>    pthread_create(&thread, &attr, (void*(*)(void*))&test, (void*)0);
>    pthread_attr_destroy(&attr);
>    pthread_join(thread, &res);
>    return 0;
>}
>
>int
>main(int argc, char *argv[])
>{
>    if (argc == 2) {
>	if (strcmp(argv[1], "-t") == 0)
>	    return (test_thread());
>	else if (strcmp(argv[1], "-f") == 0)
>	    return test_fork();
>    }
>    return test();
>}

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Attachments on bug 1149205: 943729