From 19d48667d6220aaa150f052e66a1847e3ba8f8d4 Mon Sep 17 00:00:00 2001
From: Li Feng <lifeng68@huawei.com>
Date: Tue, 13 Apr 2021 06:40:43 +0000
Subject: [PATCH 04/14] example: use absolute path to find enclave.sign.so

Signed-off-by: Li Feng <lifeng68@huawei.com>
---
 examples/helloworld/host/main.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/examples/helloworld/host/main.c b/examples/helloworld/host/main.c
index e4c4ec4..51993ce 100644
--- a/examples/helloworld/host/main.c
+++ b/examples/helloworld/host/main.c
@@ -11,6 +11,8 @@
  */
 
 #include <stdio.h>
+#include <unistd.h>
+#include <linux/limits.h>
 #include "enclave.h"
 #include "helloworld_u.h"
 
@@ -26,7 +28,21 @@ int main()
 
     printf("Create secgear enclave\n");
 
-    res = cc_enclave_create(path, AUTO_ENCLAVE_TYPE, 0, SECGEAR_DEBUG_FLAG, NULL, 0, &context);
+    char real_p[PATH_MAX];
+    /* check file exists, if not exist then use absolute path */
+    if (realpath(path, real_p) == NULL) {
+	    if (getcwd(real_p, sizeof(real_p)) == NULL) {
+		    printf("Cannot find enclave.sign.so");
+		    return -1;
+	    }
+	    if (PATH_MAX - strlen(real_p) <= strlen("/enclave.signed.so")) {
+		    printf("Failed to strcat enclave.sign.so path");
+		    return -1;
+	    }
+	    (void)strcat(real_p, "/enclave.signed.so");
+    }
+
+    res = cc_enclave_create(real_p, AUTO_ENCLAVE_TYPE, 0, SECGEAR_DEBUG_FLAG, NULL, 0, &context);
     if (res != CC_SUCCESS) {
         printf("Create enclave error\n");
         return res;
-- 
2.27.0