/usr/include/postfix/myflock.h is in postfix-dev 2.9.1-4.
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 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | #ifndef _MYFLOCK_H_INCLUDED_
#define _MYFLOCK_H_INCLUDED_
/*++
/* NAME
/* myflock 3h
/* SUMMARY
/* lock open file
/* SYNOPSIS
/* #include <myflock.h>
/* DESCRIPTION
/* .nf
/*
* External interface.
*/
extern int myflock(int, int, int);
/*
* Lock styles.
*/
#define MYFLOCK_STYLE_FLOCK 1
#define MYFLOCK_STYLE_FCNTL 2
/*
* Lock request types.
*/
#define MYFLOCK_OP_NONE 0
#define MYFLOCK_OP_SHARED 1
#define MYFLOCK_OP_EXCLUSIVE 2
#define MYFLOCK_OP_NOWAIT 4
#define MYFLOCK_OP_BITS \
(MYFLOCK_OP_SHARED | MYFLOCK_OP_EXCLUSIVE | MYFLOCK_OP_NOWAIT)
/* 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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