new testcase for clone()

1 files changed, 116 insertions, 0 deletions

diff --git a/test/unistd/clone.c b/test/unistd/clone.c
new file mode 100644
index 000000000..6d9aa6873
--- /dev/null
+++ b/test/unistd/clone.c
@@ -0,0 +1,116 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * clone test for uClibc
+ *
+ * Copyright (C) 2000 by Lineo, inc. and Erik Andersen
+ * Copyright (C) 2000,2001 by Erik Andersen <andersen@uclibc.org>
+ * Written by Erik Andersen <andersen@uclibc.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sched.h>
+#include <sys/wait.h>
+
+#define GOT1     (1 << 1)
+#define GOT2     (1 << 2)
+#define GOT3     (1 << 3)
+#define ALLGOT   (GOT1|GOT2|GOT3)
+
+void child_handler(int sig)
+{
+	printf("I got a SIGCHLD\n");
+}
+
+int clone_main(void *arg)
+{
+	unsigned long input = (unsigned long)arg;
+	int secs = (input / 10) * 4;
+	printf("Clone got %lu, sleeping for %i secs\n", input, secs);
+	sleep(secs);
+	return input + 20;
+}
+
+int main(void) 
+{
+	int clone1, clone2, clone3;
+	char clone1_stack[8192], clone2_stack[8192], clone3_stack[8192];
+	int status, nostatus, result, wpid;
+
+	signal(SIGCHLD, child_handler);
+
+	if ((clone1 = clone(clone_main, clone1_stack, 0, (void*)11)) == -1) {
+		perror("Clone 1 failed");
+		exit(-1);
+	}
+	if ((clone2 = clone(clone_main, clone2_stack, 0, (void*)22)) == -1) {
+		perror("Clone 2 failed");
+		exit(-2);
+	}
+	if ((clone3 = clone(clone_main, clone3_stack, 0, (void*)33)) == -1) {
+		perror("Clone 3 failed");
+		exit(-3);
+	}
+
+	sleep(1);
+	printf("Parent: waiting for the clones to die.\n");
+	nostatus = status = 0;
+	while (1) {
+		if ((wpid = waitpid(clone1, &result, WNOHANG|__WCLONE)) == -1)
+			nostatus |= GOT1;
+		if (wpid == clone1) {
+			status |= GOT1;
+			printf("Clone1 gave back %i\n", WEXITSTATUS(result));
+		}
+
+		if ((wpid = waitpid(clone2, &result, WNOHANG|__WCLONE)) == -1)
+			nostatus |= GOT2;
+		if (wpid == clone2) {
+			status |= GOT2;
+			printf("Clone2 gave back %i\n", WEXITSTATUS(result));
+		}
+
+		if ((wpid = waitpid(clone3, &result, WNOHANG|__WCLONE)) == -1)
+			nostatus |= GOT3;
+		if (wpid == clone3) {
+			status |= GOT3;
+			printf("Clone3 gave back %i\n", WEXITSTATUS(result));
+		}
+
+		if (status == ALLGOT || nostatus == ALLGOT)
+			break;
+	}
+
+	if (status == ALLGOT) {
+		printf("Clones exited.\nGoodbye.\n");
+		return EXIT_SUCCESS;
+	} else {
+		perror("Waiting for clones failed");
+		return EXIT_FAILURE;
+	}
+}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/