Add Redis source code for testing

1 files changed, 49 insertions, 0 deletions

diff --git a/examples/redis-unstable/utils/corrupt_rdb.c b/examples/redis-unstable/utils/corrupt_rdb.c
new file mode 100644
index 0000000..d1a093c
--- /dev/null
+++ b/examples/redis-unstable/utils/corrupt_rdb.c
@@ -0,0 +1,49 @@
+/* Trivia program to corrupt an RDB file in order to check the RDB check
+ * program behavior and effectiveness.
+ *
+ * Copyright (C) 2016-Present Redis Ltd. All rights reserved.
+ *
+ * Licensed under your choice of (a) the Redis Source Available License 2.0
+ * (RSALv2); or (b) the Server Side Public License v1 (SSPLv1); or (c) the
+ * GNU Affero General Public License v3 (AGPLv3).
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+int main(int argc, char **argv) {
+    struct stat stat;
+    int fd, cycles;
+
+    if (argc != 3) {
+        fprintf(stderr,"Usage: <filename> <cycles>\n");
+        exit(1);
+    }
+
+    srand(time(NULL));
+    char *filename = argv[1];
+    cycles = atoi(argv[2]);
+    fd = open(filename,O_RDWR);
+    if (fd == -1) {
+        perror("open");
+        exit(1);
+    }
+    fstat(fd,&stat);
+
+    while(cycles--) {
+        unsigned char buf[32];
+        unsigned long offset = rand()%stat.st_size;
+        int writelen = 1+rand()%31;
+        int j;
+
+        for (j = 0; j < writelen; j++) buf[j] = (char)rand();
+        lseek(fd,offset,SEEK_SET);
+        printf("Writing %d bytes at offset %lu\n", writelen, offset);
+        write(fd,buf,writelen);
+    }
+    return 0;
+}