D60198.id188688.diff
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D60198.id188688.diff
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	diff --git a/sys/compat/linuxkpi/common/include/linux/uaccess.h b/sys/compat/linuxkpi/common/include/linux/uaccess.h
	--- a/sys/compat/linuxkpi/common/include/linux/uaccess.h
	+++ b/sys/compat/linuxkpi/common/include/linux/uaccess.h
	@@ -32,6 +32,7 @@
	#define _LINUXKPI_LINUX_UACCESS_H_

	#include <sys/param.h>
	+#include <sys/systm.h>
	#include <sys/lock.h>
	#include <sys/proc.h>

	@@ -119,4 +120,20 @@
	#define copy_from_user_inatomic_nontemporal(to, from, n) \
	__copy_from_user_inatomic((to), (from), (n))

	+static inline long
	+strncpy_from_user(char dst, const char __user src, long count)
	+{
	+ size_t done;
	+ int error;
	+
	+ if (count <= 0)
	+ return (0);
	+ error = copyinstr(src, dst, count, &done);
	+ if (error == 0)
	+ return ((long)done - 1); /* done includes the NUL */
	+ if (error == ENAMETOOLONG)
	+ return (count); /* truncated, as Linux */
	+ return (-EFAULT);
	+}
	+
	#endif /* _LINUXKPI_LINUX_UACCESS_H_ */