ShellPkg/IsVolatileEnv: Handle memory allocation failure

[mirror_edk2.git] / ShellPkg / Application / Shell / ShellEnvVar.h

diff --git a/ShellPkg/Application/Shell/ShellEnvVar.h b/ShellPkg/Application/Shell/ShellEnvVar.h
index dd88b29fa040e23083219435bed8d566a66f28b1..5356580759a7adf24880a29d9f961b7300bde0e1 100644 (file)
--- a/ShellPkg/Application/Shell/ShellEnvVar.h
+++ b/ShellPkg/Application/Shell/ShellEnvVar.h
@@ -34,19 +34,18 @@ extern ENV_VAR_LIST    gShellEnvVarList;
 \r
 \r
 /**\r
-  Reports whether an environment variable is Volatile or Non-Volatile\r
-\r
-  This will use the Runtime Services call GetVariable to to search for the variable.\r
+  Reports whether an environment variable is Volatile or Non-Volatile.\r
 \r
   @param EnvVarName             The name of the environment variable in question\r
+  @param Volatile               Return TRUE if the environment variable is volatile\r
 \r
-  @retval TRUE                  This environment variable is Volatile\r
-  @retval FALSE                 This environment variable is NON-Volatile\r
+  @retval EFI_SUCCESS           The volatile attribute is returned successfully\r
+  @retval others                Some errors happened.\r
 **/\r
-BOOLEAN\r
-EFIAPI\r
+EFI_STATUS\r
 IsVolatileEnv (\r
-  IN CONST CHAR16 *EnvVarName\r
+  IN CONST CHAR16 *EnvVarName,\r
+  OUT BOOLEAN     *Volatile\r
   );\r
 \r
 /**\r