1 files changed, 48 insertions, 0 deletions
diff --git a/extras/stripe-merge.c b/extras/stripe-merge.c
new file mode 100644
index 00000000000..3f8e4b1244d
--- /dev/null
+++ b/extras/stripe-merge.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+int
+main (int argc, char *argv[])
+{
+	int fds[argc-1];
+	char buf[argc-1][4096];
+	int i;
+	int max_ret, ret;
+
+	if (argc < 2) {
+		printf ("Usage: %s file1 file2 ... >file\n", argv[0]);
+		return 1;
+	}
+
+	for (i=0; i<argc-1; i++) {
+		fds[i] = open (argv[i+1], O_RDONLY);
+		if (fds[i] == -1) {
+			perror (argv[i+1]);
+			return 1;
+		}
+	}
+
+	max_ret = 0;
+	do {
+		char newbuf[4096] = {0, };
+		int j;
+
+		max_ret = 0;
+		for (i=0; i<argc-1; i++) {
+			memset (buf[i], 0, 4096);
+			ret = read (fds[i], buf[i], 4096); 
+			if (ret > max_ret)
+				max_ret = ret;
+		}
+		for (i=0; i<max_ret;i++)
+			for (j=0; j<argc-1; j++)
+				newbuf[i] |= buf[j][i];
+		write (1, newbuf, max_ret);
+	} while (max_ret);
+
+	return 0;
+}
+