More error messages

Some error messages were missing. One could get misleading error messages.
For example, during app installation, if app directory doesn't exist,
one get "Failed getting app dir for user uid: ..."

* added more error messages
* added errno info for realpath()

Change-Id: I1cddc007b53417ca664e40a08fd60cf05adb9654
Signed-off-by: Zbigniew Jasinski <z.jasinski@samsung.com>

diff --git a/src/common/service_impl.cpp b/src/common/service_impl.cpp
index 884b37d..9d3da26 100755 (executable)
--- a/src/common/service_impl.cpp
+++ b/src/common/service_impl.cpp
@@ -212,24 +212,32 @@ bool ServiceImpl::getUserAppDir(const uid_t &uid, std::string &userAppDir)
 {
     struct tzplatform_context *tz_ctx = nullptr;
 
-    if (tzplatform_context_create(&tz_ctx))
-            return false;
+    if (tzplatform_context_create(&tz_ctx)) {
+        LogError("Error in tzplatform_context_create()");
+        return false;
+    }
 
     std::unique_ptr<struct tzplatform_context, decltype(tzplatform_context_destroy)*> tz_ctxPtr(
         tz_ctx, &tzplatform_context_destroy);
 
-    if (tzplatform_context_set_user(tz_ctxPtr.get(), uid))
+    if (tzplatform_context_set_user(tz_ctxPtr.get(), uid)) {
+        LogError("Error in tzplatform_context_set_user()");
         return false;
+    }
 
     enum tzplatform_variable id =
             (uid == getGlobalUserId()) ? TZ_SYS_RW_APP : TZ_USER_APP;
     const char *appDir = tzplatform_context_getenv(tz_ctxPtr.get(), id);
-    if (!appDir)
+    if (!appDir) {
+        LogError("Error in tzplatform_context_getenv()");
         return false;
+    }
 
     std::unique_ptr<char, decltype(free)*> real_pathPtr(realpath(appDir, NULL), free);
-    if (!real_pathPtr.get())
+    if (!real_pathPtr.get()) {
+        LogError("Error in realpath(): " << GetErrnoString(errno) << " for: " << appDir);
         return false;
+    }
 
     userAppDir.assign(real_pathPtr.get());