/usr/include/xenomai/nucleus/bufd.h is in libxenomai-dev 2.6.4+dfsg-1.
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 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | /**
* @file
* @note Copyright (C) 2009 Philippe Gerum <rpm@xenomai.org>.
*
* 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.
*
* \ingroup bufd
*/
#ifndef _XENO_NUCLEUS_BUFD_H
#define _XENO_NUCLEUS_BUFD_H
/*! \addtogroup bufd
*@{*/
#include <nucleus/types.h>
#ifdef CONFIG_XENO_OPT_PERVASIVE
struct mm_struct;
struct xnbufd {
caddr_t b_ptr; /* src/dst buffer address */
size_t b_len; /* total length of buffer */
off_t b_off; /* # of bytes read/written */
struct mm_struct *b_mm; /* src/dst address space */
caddr_t b_carry; /* pointer to carry over area */
char b_buf[64]; /* fast carry over area */
};
void xnbufd_map_umem(struct xnbufd *bufd,
void __user *ptr, size_t len);
static inline void xnbufd_map_uread(struct xnbufd *bufd,
const void __user *ptr, size_t len)
{
xnbufd_map_umem(bufd, (void __user *)ptr, len);
}
static inline void xnbufd_map_uwrite(struct xnbufd *bufd,
void __user *ptr, size_t len)
{
xnbufd_map_umem(bufd, ptr, len);
}
ssize_t xnbufd_unmap_uread(struct xnbufd *bufd);
ssize_t xnbufd_unmap_uwrite(struct xnbufd *bufd);
#else /* !CONFIG_XENO_OPT_PERVASIVE */
struct xnbufd {
caddr_t b_ptr; /* src/dst buffer address */
size_t b_len; /* total length of buffer */
off_t b_off; /* # of bytes read/written */
};
#endif /* !CONFIG_XENO_OPT_PERVASIVE */
void xnbufd_map_kmem(struct xnbufd *bufd,
void *ptr, size_t len);
static inline void xnbufd_map_kread(struct xnbufd *bufd,
const void *ptr, size_t len)
{
xnbufd_map_kmem(bufd, (void *)ptr, len);
}
static inline void xnbufd_map_kwrite(struct xnbufd *bufd,
void *ptr, size_t len)
{
xnbufd_map_kmem(bufd, ptr, len);
}
ssize_t xnbufd_unmap_kread(struct xnbufd *bufd);
ssize_t xnbufd_unmap_kwrite(struct xnbufd *bufd);
ssize_t xnbufd_copy_to_kmem(void *ptr,
struct xnbufd *bufd, size_t len);
ssize_t xnbufd_copy_from_kmem(struct xnbufd *bufd,
void *from, size_t len);
void xnbufd_invalidate(struct xnbufd *bufd);
static inline void xnbufd_reset(struct xnbufd *bufd)
{
bufd->b_off = 0;
}
/*@}*/
#endif /* !_XENO_NUCLEUS_BUFD_H */
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