26 lines
643 B
C
26 lines
643 B
C
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/* Tests that seeking past the end of a file and writing will
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properly zero out the region in between. */
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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 buf[76543];
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void
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test_main (void)
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{
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const char *file_name = "testfile";
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char zero = 0;
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int fd;
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CHECK (create (file_name, 0), "create \"%s\"", file_name);
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CHECK ((fd = open (file_name)) > 1, "open \"%s\"", file_name);
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msg ("seek \"%s\"", file_name);
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seek (fd, sizeof buf - 1);
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CHECK (write (fd, &zero, 1) > 0, "write \"%s\"", file_name);
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msg ("close \"%s\"", file_name);
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close (fd);
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check_file (file_name, buf, sizeof buf);
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}
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