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-rw-r--r--include/linux/unistd.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/unistd.h b/include/linux/unistd.h
index 10ed983..c18c60f 100644
--- a/include/linux/unistd.h
+++ b/include/linux/unistd.h
@@ -1,7 +1,9 @@
#ifndef _LINUX_UNISTD_H_
#define _LINUX_UNISTD_H_
+#ifdef __KERNEL__
extern int errno;
+#endif
/*
* Include machine specific syscallX macros
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