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30 lines
665 B
30 lines
665 B
6 years ago
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#include <litc.h>
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int main(int argc, char **argv)
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{
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if (open((const char *)0x12347, O_RDONLY, 0) >= 0 || errno != EFAULT)
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errx(-1, "no fault?");
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errno = 0;
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if (write(1, (void *)0x7ffffff0, 10) >= 0 || errno != EFAULT)
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errx(-1, "no fault?");
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errno = 0;
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// g0 stack
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if (mkdir((const char *)0xffffffffffffffff, 0) == 0 || errno != EFAULT)
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errx(-1, "no fault?");
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errno = 0;
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int fd;
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if ((fd = open("/bigfile.txt", O_RDONLY, 0)) < 0)
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err(fd, "open");
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if (errno != 0)
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errx(-1, "errno changed on success?");
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// kernel text
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if (read(fd, (void *)0x400040, 1024) >= 0 || errno != EFAULT)
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errx(-1, "no fault?");
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printf("success\n");
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return 0;
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}
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