proc_alloc: make new process inherit parent's user

[akaros.git] / kern / include / error.h

diff --git a/kern/include/error.h b/kern/include/error.h
index d1b51e3..4e14522 100644 (file)
--- a/kern/include/error.h
+++ b/kern/include/error.h
@@ -1,21 +1,13 @@
 /* See COPYRIGHT for copyright information. */
 
-#ifndef ROS_INC_ERROR_H
-#define ROS_INC_ERROR_H
+#pragma once
 
 #include <ros/errno.h>
 
 typedef int error_t;
 
-/* The special format for printk %e takes an integer
- * error code and prints a string describing the error.
- * The integer may be positive or negative,
- * so that -ENOMEM and ENOMEM are equivalent.
- */
+#define MAX_ERRNO              4095
 
-static const char *const error_string[] =
-{
-       #include <errstrings.h>
-};
-
-#endif // !ROS_INC_ERROR_H */
+#define ERR_PTR(err)  ((void *)((intptr_t)(err)))
+#define PTR_ERR(ptr)  ((intptr_t)(ptr))
+#define IS_ERR(ptr)   (-(intptr_t)(ptr) <= MAX_ERRNO)