65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
#include <inc/lib.h>
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char *msg = "Now is the time for all good men to come to the aid of their party.";
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void
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umain(int argc, char **argv)
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{
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char buf[100];
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int i, pid, p[2];
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binaryname = "pipereadeof";
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if ((i = pipe(p)) < 0)
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panic("pipe: %e", i);
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if ((pid = fork()) < 0)
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panic("fork: %e", i);
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if (pid == 0) {
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cprintf("[%08x] pipereadeof close %d\n", thisenv->env_id, p[1]);
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close(p[1]);
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cprintf("[%08x] pipereadeof readn %d\n", thisenv->env_id, p[0]);
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i = readn(p[0], buf, sizeof buf-1);
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if (i < 0)
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panic("read: %e", i);
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buf[i] = 0;
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if (strcmp(buf, msg) == 0)
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cprintf("\npipe read closed properly\n");
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else
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cprintf("\ngot %d bytes: %s\n", i, buf);
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exit();
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} else {
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cprintf("[%08x] pipereadeof close %d\n", thisenv->env_id, p[0]);
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close(p[0]);
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cprintf("[%08x] pipereadeof write %d\n", thisenv->env_id, p[1]);
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if ((i = write(p[1], msg, strlen(msg))) != strlen(msg))
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panic("write: %e", i);
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close(p[1]);
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}
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wait(pid);
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binaryname = "pipewriteeof";
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if ((i = pipe(p)) < 0)
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panic("pipe: %e", i);
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if ((pid = fork()) < 0)
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panic("fork: %e", i);
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if (pid == 0) {
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close(p[0]);
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while (1) {
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cprintf(".");
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if (write(p[1], "x", 1) != 1)
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break;
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}
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cprintf("\npipe write closed properly\n");
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exit();
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}
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close(p[0]);
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close(p[1]);
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wait(pid);
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cprintf("pipe tests passed\n");
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}
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