diff --git a/include/glacier_runtime.h b/include/glacier_runtime.h
index 9113731..1133f52 100644
--- a/include/glacier_runtime.h
+++ b/include/glacier_runtime.h
@@ -34,4 +34,20 @@
 
 void runtime_exists();
 
+/*
+ * is_process_root
+ *
+ * DESCRIPTION: is_process_root checks if the process is running with root privileges.
+ * PARAMETERS:
+ * 		None.
+ * RETURN VALUES:
+ * 		0 on root, 1 on non-root
+ * CAVEATS:
+ * 		None.
+ * EXAMPLE:
+ * 		is_process_root();
+ */
+
+int is_process_root();
+
 #endif
diff --git a/libglacier.c b/libglacier.c
index affc3eb..3abcee6 100644
--- a/libglacier.c
+++ b/libglacier.c
@@ -51,6 +51,7 @@ const char *runtime_files[] = {
  *
  * DESCRIPTION: Output a stylized info message.
  * PARAMETERS: char MSG[]
+ * DEFINED IN: glacier_log.h
  *
  */
 
@@ -70,6 +71,7 @@ infolog(char MSG[])
  *
  * DESCRIPTION: Output a stylized warning message.
  * Parameters: char MSG[]
+ * DEFINED IN: glacier_log.h
  *
  */
 
@@ -89,6 +91,7 @@ warnlog(char MSG[])
  * 
  * DESCRIPTION: Output a stylized error message.
  * PARAMETERS: char MSG[]
+ * DEFINED IN: glacier_log.h
  *
  */
 
@@ -108,6 +111,7 @@ errlog(char MSG[])
  * 
  * DESCRIPTION: Output a stylized success message.
  * PARAMETERS: char MSG[]
+ * DEFINED IN: glacier_log.h
  *
  */
 
@@ -130,6 +134,7 @@ successlog(char MSG[])
  *
  * DESCRIPTION: Check if necesary runtime files exist.
  * PARAMETERS: None.
+ * DEFINED IN: glacier_runtime.h
  *
  */
 
@@ -148,11 +153,30 @@ runtime_exists()
 	return 1;
 }
 
+/*
+ * is_process_root
+ *
+ * DESCRIPTION: Check if process is running as root.
+ * PARAMETERS: None.
+ * DEFINED IN: glacier_runtime.h
+ *
+ */
+
+int
+is_process_root()
+{
+	if (getuid() != 0) {
+		errlog("Failed to open package index: permission denied. Are you root?");
+		exit(1);
+	}
+}
+
 /*
  * init_config
  *
  * DESCRIPTION: Initialize libconfig.
  * PARAMETERS: None.
+ * DEFINED IN: glacier_config.h
  *
  */
 
@@ -177,6 +201,7 @@ init_config()
  *
  * DESCRIPTION: Kill libconfig.
  * PARAMETERS: None.
+ * DEFINED IN: glacier_config.h
  *
  */
 
@@ -193,6 +218,7 @@ die_config()
  *
  * DESCRIPTION: Loads all settings from the Glacier config file.
  * PARAMETERS: None.
+ * DEFINED IN: glacier_config.h
  *
  */
 
@@ -222,6 +248,7 @@ load_all_from_config()
  *
  * DESCRIPTION: Load a specified setting from the Glacier config file.
  * PARAMETERS: char SETTING[]
+ * DEFINED IN: glacier_config.h
  *
  */
 
@@ -234,6 +261,7 @@ load_setting_from_config(char SETTING[])
  *
  * DESCRIPTION: Creates a new Glacier workspace in /tmp.
  * PARAMETERS: None.
+ * DEFINED IN: glacier_pkgops.h
  *
  */
 
@@ -257,6 +285,7 @@ mkworkspace()
  *
  * DESCRIPTION: Copies a package archive from the localdb to the workspace, and unpacks it.
  * PARAMETERS: char PACKAGE[]
+ * DEFINED IN: glacier_pkgops.h
  *
  */
 
@@ -340,6 +369,7 @@ TEST_chdir(char dir[])
  *
  * DESCRIPTION: Runs a make task in current working directory 
  * PARAMETERS: char TASK[]
+ * DEFINED IN: glacier_pkgops.h
  *
  */