22 lines
458 B
C
22 lines
458 B
C
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/* Verifies that mapping over the data segment is disallowed. */
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#include <stdint.h>
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#include <round.h>
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#include <syscall.h>
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#include "tests/lib.h"
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#include "tests/main.h"
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static char x;
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void
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test_main (void)
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{
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uintptr_t x_page = ROUND_DOWN ((uintptr_t) &x, 4096);
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int handle;
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CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
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CHECK (mmap (handle, (void *) x_page) == MAP_FAILED,
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"try to mmap over data segment");
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}
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