55 lines
1.2 KiB
C
Executable file
55 lines
1.2 KiB
C
Executable file
/* Child process run by rox-child and rox-multichild tests.
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Opens and tries to write to its own executable, verifying that
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that is disallowed.
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Then recursively executes itself to the depth indicated by the
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first command-line argument. */
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#include <ctype.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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const char *test_name = "child-rox";
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static void
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try_write (void)
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{
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int handle;
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char buffer[19];
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quiet = true;
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CHECK ((handle = open ("child-rox")) > 1, "open \"child-rox\"");
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quiet = false;
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CHECK (write (handle, buffer, sizeof buffer) == 0,
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"try to write \"child-rox\"");
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close (handle);
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}
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int
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main (int argc UNUSED, char *argv[])
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{
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msg ("begin");
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try_write ();
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if (!isdigit (*argv[1]))
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fail ("bad command-line arguments");
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if (atoi (argv[1]) > 1)
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{
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char cmd[128];
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int child;
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snprintf (cmd, sizeof cmd, "child-rox %d", atoi (argv[1]) - 1);
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CHECK ((child = exec (cmd)) != -1, "exec \"%s\"", cmd);
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quiet = true;
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CHECK (wait (child) == 12, "wait for \"child-rox\"");
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quiet = false;
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}
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try_write ();
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msg ("end");
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return 12;
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}
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