/usr/include/diet/sys/klog.h is in dietlibc-dev 0.33~cvs20120325-6+deb8u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | #ifndef _SYS_KLOG_H
#define _SYS_KLOG_H
#include <sys/cdefs.h>
__BEGIN_DECLS
extern int klogctl (int __type, char *__bufp, int __len) __THROW;
__END_DECLS
#endif
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