33 lines
936 B
C
33 lines
936 B
C
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/* Maps a file into memory and runs child-inherit to verify that
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mappings are not inherited. */
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#include <string.h>
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#include <syscall.h>
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#include "tests/vm/sample.inc"
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#include "tests/lib.h"
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#include "tests/main.h"
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void
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test_main (void)
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{
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char *actual = (char *) 0x54321000;
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int handle;
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pid_t child;
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/* Open file, map, verify data. */
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CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
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CHECK (mmap (handle, actual) != MAP_FAILED, "mmap \"sample.txt\"");
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if (memcmp (actual, sample, strlen (sample)))
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fail ("read of mmap'd file reported bad data");
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/* Spawn child and wait. */
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CHECK ((child = exec ("child-inherit")) != -1, "exec \"child-inherit\"");
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quiet = true;
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CHECK (wait (child) == -1, "wait for child (should return -1)");
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quiet = false;
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/* Verify data again. */
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CHECK (!memcmp (actual, sample, strlen (sample)),
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"checking that mmap'd file still has same data");
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}
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