/usr/include/xenomai/nucleus/vdso.h is in libxenomai-dev 2.5.5.2-1ubuntu2.
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 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | #ifndef _XENO_NUCLEUS_VDSO_H
#define _XENO_NUCLEUS_VDSO_H
/*!\file vdso.h
* \brief Definitions for global semaphore heap shared objects
* \author Wolfgang Mauerer
*
* Copyright (C) 2009 Wolfgang Mauerer <wolfgang.mauerer@siemens.com>.
*
* Xenomai is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* Xenomai 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Xenomai; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <nucleus/types.h>
/*
* Data shared between Xenomai kernel/userland and the Linux kernel/userland
* on the global semaphore heap. The features element indicates which data are
* shared. Notice that struct xnvdso may only grow, but never shrink.
*/
struct xnvdso {
unsigned long long features;
/* Embed domain specific structures that describe the
* shared data here */
};
/*
* For each shared feature, add a flag below. For now, the set is still
* empty.
*/
/*
#define XNVDSO_FEAT_A 0x0000000000000001ULL
#define XNVDSO_FEAT_B 0x0000000000000002ULL
#define XNVDSO_FEAT_C 0x0000000000000004ULL
#define XNVDSO_FEATURES (XNVDSO_FEAT_A | XNVDSO_FEAT_B | XVDSO_FEAT_C)
*/
#define XNVDSO_FEAT_DROP_U_MODE 0x0000000000000001ULL
#define XNVDSO_FEATURES (XNVDSO_FEAT_DROP_U_MODE)
extern struct xnvdso *nkvdso;
static inline int xnvdso_test_feature(unsigned long long feature)
{
return testbits(nkvdso->features, feature);
}
extern void xnheap_init_vdso(void);
#endif /* _XENO_NUCLEUS_VDSO_H */
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