36 lines
799 B
C
36 lines
799 B
C
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/* Child process for syn-read test.
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Writes into part of a test file. Other processes will be
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writing into other parts at the same time. */
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#include <random.h>
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#include <stdlib.h>
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#include <syscall.h>
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#include "tests/lib.h"
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#include "tests/filesys/base/syn-write.h"
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char buf[BUF_SIZE];
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int
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main (int argc, char *argv[])
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{
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int child_idx;
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int fd;
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quiet = true;
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CHECK (argc == 2, "argc must be 2, actually %d", argc);
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child_idx = atoi (argv[1]);
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random_init (0);
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random_bytes (buf, sizeof buf);
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CHECK ((fd = open (file_name)) > 1, "open \"%s\"", file_name);
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seek (fd, CHUNK_SIZE * child_idx);
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CHECK (write (fd, buf + CHUNK_SIZE * child_idx, CHUNK_SIZE) > 0,
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"write \"%s\"", file_name);
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msg ("close \"%s\"", file_name);
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close (fd);
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return child_idx;
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}
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