45 lines
971 B
C
45 lines
971 B
C
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/* Child process for syn-read test.
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Reads the contents of a test file a byte at a time, in the
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hope that this will take long enough that we can get a
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significant amount of contention in the kernel file system
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code. */
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#include <random.h>
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#include <stdio.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-read.h"
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const char *test_name = "child-syn-read";
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static char buf[BUF_SIZE];
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int
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main (int argc, const char *argv[])
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{
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int child_idx;
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int fd;
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size_t i;
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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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for (i = 0; i < sizeof buf; i++)
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{
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char c;
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CHECK (read (fd, &c, 1) > 0, "read \"%s\"", file_name);
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compare_bytes (&c, buf + i, 1, i, file_name);
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}
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close (fd);
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return child_idx;
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}
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