waterDataStatisticsCrossAssociation memoryDefinitionWaterSprayFireAssociated.h 朱涛 commit at 2020-09-11

waterDataStatisticsCrossAssociation/dataSharedMemory/memoryDefinitionWaterSprayFireAssociated.h

@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_AVR32_UACCESS_H
+#define __ASM_AVR32_UACCESS_H
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+
+#define VERIFY_READ	0
+#define VERIFY_WRITE	1
+
+typedef struct {
+	unsigned int is_user_space;
+} mm_segment_t;
+
+/*
+ * The fs value determines whether argument validity checking should be
+ * performed or not.  If get_fs() == USER_DS, checking is performed, with
+ * get_fs() == KERNEL_DS, checking is bypassed.
+ *
+ * For historical reasons (Data Segment Register?), these macros are misnamed.
+ */
+#define MAKE_MM_SEG(s)	((mm_segment_t) { (s) })
+#define segment_eq(a,b)	((a).is_user_space == (b).is_user_space)
+
+#define USER_ADDR_LIMIT 0x80000000
+
+#define KERNEL_DS	MAKE_MM_SEG(0)
+#define USER_DS		MAKE_MM_SEG(1)
+
+#define get_ds()	(KERNEL_DS)
+
+static inline mm_segment_t get_fs(void)
+{
+	return MAKE_MM_SEG(test_thread_flag(TIF_USERSPACE));
+}
+
+static inline void set_fs(mm_segment_t s)
+{
+	if (s.is_user_space)
+		set_thread_flag(TIF_USERSPACE);
+	else
+		clear_thread_flag(TIF_USERSPACE);
+}
+
+/*
+ * Test whether a block of memory is a valid user space address.
+ * Returns 0 if the range is valid, nonzero otherwise.
+ *
+ * We do the following checks:
+ *   1. Is the access from kernel space?
+ *   2. Does (addr + size) set the carry bit?
+ *   3. Is (addr + size) a negative number (i.e. >= 0x80000000)?
+ *
+ * If yes on the first check, access is granted.
+ * If no on any of the others, access is denied.
+ */
+#define __range_ok(addr, size)						\
+	(test_thread_flag(TIF_USERSPACE)				\
+	 && (((unsigned long)(addr) >= 0x80000000)			\
+	     || ((unsigned long)(size) > 0x80000000)			\
+	     || (((unsigned long)(addr) + (unsigned long)(size)) > 0x80000000)))
+
+#define access_ok(type, addr, size) (likely(__range_ok(addr, size) == 0))
+
+/* Generic arbitrary sized copy. Return the number of bytes NOT copied */
+extern __kernel_size_t __copy_user(void *to, const void *from,
+				   __kernel_size_t n);
+
+extern __kernel_size_t copy_to_user(void __user *to, const void *from,
+				    __kernel_size_t n);
+extern __kernel_size_t copy_from_user(void *to, const void __user *from,
+				      __kernel_size_t n);
+
+static inline __kernel_size_t __copy_to_user(void __user *to, const void *from,
+					     __kernel_size_t n)
+{
+	return __copy_user((void __force *)to, from, n);
+}
+static inline __kernel_size_t __copy_from_user(void *to,
+					       const void __user *from,
+					       __kernel_size_t n)
+{
+	return __copy_user(to, (const void __force *)from, n);
+}
+
+#define __copy_to_user_inatomic __copy_to_user
+#define __copy_from_user_inatomic __copy_from_user
+
+/*
+ * put_user: - Write a simple value into user space.
+ * @x:   Value to copy to user space.
+ * @ptr: Destination address, in user space.
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * This macro copies a single simple value from kernel space to user
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and @x must be assignable
+ * to the result of dereferencing @ptr.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ */
+#define put_user(x,ptr)	\
+	__put_user_check((x),(ptr),sizeof(*(ptr)))
+