/usr/include/postfix/is_header.h is in postfix-dev 3.1.0-3.
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 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | #ifndef _IS_HEADER_H_INCLUDED_
#define _IS_HEADER_H_INCLUDED_
/*++
/* NAME
/* is_header 3h
/* SUMMARY
/* message header classification
/* SYNOPSIS
/* #include <is_header.h>
/* DESCRIPTION
/* .nf
/* External interface. */
#define IS_HEADER_NULL_TERMINATED (-1)
#define is_header(str) is_header_buf(str, IS_HEADER_NULL_TERMINATED)
extern ssize_t is_header_buf(const char *, ssize_t);
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
#endif
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