blob: c2ea75f02d2bb954c5d7751c5c33c3087bda9927 (plain
/* SysV ftok for Hurd.
Copyright (C) 1995-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
/* In the Hurd, we use the second-to-most-significant bit as flag for
private keys. We use an order of the components different from the generic
code in sysvipc/ftok.c so that the biggest one--the inode number--is
affected by this. */
ftok (const char *pathname, int proj_id)
struct stat64 st;
if (__stat64 (pathname, &st) < 0)
return (key_t) -1;
key = ((st.st_dev & 0xff) | ((proj_id & 0xff) << 8)
| ((st.st_ino & 0x3fff) << 16));