36 lines
820 B
C
36 lines
820 B
C
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/* Grows a file in chunks while subprocesses read the growing
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file. */
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#include <random.h>
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#include <syscall.h>
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#include "tests/filesys/extended/syn-rw.h"
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#include "tests/lib.h"
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#include "tests/main.h"
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char buf[BUF_SIZE];
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#define CHILD_CNT 4
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void
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test_main (void)
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{
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pid_t children[CHILD_CNT];
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size_t ofs;
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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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exec_children ("child-syn-rw", children, CHILD_CNT);
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random_bytes (buf, sizeof buf);
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quiet = true;
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for (ofs = 0; ofs < BUF_SIZE; ofs += CHUNK_SIZE)
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CHECK (write (fd, buf + ofs, CHUNK_SIZE) > 0,
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"write %d bytes at offset %zu in \"%s\"",
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(int) CHUNK_SIZE, ofs, file_name);
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quiet = false;
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wait_children (children, CHILD_CNT);
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}
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