32 lines
877 B
C
Executable file
32 lines
877 B
C
Executable file
/* Writes to a file through a mapping, and unmaps the file,
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then reads the data in the file back using the read system
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call to verify. */
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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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#define ACTUAL ((void *) 0x10000000)
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void
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test_main (void)
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{
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int handle;
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mapid_t map;
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char buf[1024];
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/* Write file via mmap. */
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CHECK (create ("sample.txt", strlen (sample)), "create \"sample.txt\"");
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CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
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CHECK ((map = mmap (handle, ACTUAL)) != MAP_FAILED, "mmap \"sample.txt\"");
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memcpy (ACTUAL, sample, strlen (sample));
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munmap (map);
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/* Read back via read(). */
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read (handle, buf, strlen (sample));
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CHECK (!memcmp (buf, sample, strlen (sample)),
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"compare read data against written data");
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close (handle);
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}
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