8d59ecb214
- Move all files related to the LinuxKPI into sys/compat/linuxkpi and its subfolders. - Update sys/conf/files and some Makefiles to use new file locations. - Added description of COMPAT_LINUXKPI to sys/conf/NOTES which in turn adds the LinuxKPI to all LINT builds. - The LinuxKPI can be added to the kernel by setting the COMPAT_LINUXKPI option. The OFED kernel option no longer builds the LinuxKPI into the kernel. This was done to keep the build rules for the LinuxKPI in sys/conf/files simple. - Extend the LinuxKPI module to include support for USB by moving the Linux USB compat from usb.ko to linuxkpi.ko. - Bump the FreeBSD_version. - A universe kernel build has been done. Reviewed by: np @ (cxgb and cxgbe related changes only) Sponsored by: Mellanox Technologies
161 lines
3.8 KiB
C
161 lines
3.8 KiB
C
/*-
|
|
* Copyright (c) 2010 Isilon Systems, Inc.
|
|
* Copyright (c) 2010 iX Systems, Inc.
|
|
* Copyright (c) 2010 Panasas, Inc.
|
|
* Copyright (c) 2013 Mellanox Technologies, Ltd.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice unmodified, this list of conditions, and the following
|
|
* disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef _LINUX_FILE_H_
|
|
#define _LINUX_FILE_H_
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/file.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/refcount.h>
|
|
#include <sys/capsicum.h>
|
|
#include <sys/proc.h>
|
|
|
|
#include <linux/fs.h>
|
|
|
|
struct linux_file;
|
|
|
|
#undef file
|
|
|
|
extern struct fileops linuxfileops;
|
|
|
|
static inline struct linux_file *
|
|
linux_fget(unsigned int fd)
|
|
{
|
|
cap_rights_t rights;
|
|
struct file *file;
|
|
|
|
if (fget_unlocked(curthread->td_proc->p_fd, fd,
|
|
cap_rights_init(&rights), &file, NULL) != 0) {
|
|
return (NULL);
|
|
}
|
|
return (struct linux_file *)file->f_data;
|
|
}
|
|
|
|
static inline void
|
|
fput(struct linux_file *filp)
|
|
{
|
|
if (filp->_file == NULL) {
|
|
kfree(filp);
|
|
return;
|
|
}
|
|
if (refcount_release(&filp->_file->f_count)) {
|
|
_fdrop(filp->_file, curthread);
|
|
kfree(filp);
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
put_unused_fd(unsigned int fd)
|
|
{
|
|
cap_rights_t rights;
|
|
struct file *file;
|
|
|
|
if (fget_unlocked(curthread->td_proc->p_fd, fd,
|
|
cap_rights_init(&rights), &file, NULL) != 0) {
|
|
return;
|
|
}
|
|
/*
|
|
* NOTE: We should only get here when the "fd" has not been
|
|
* installed, so no need to free the associated Linux file
|
|
* structure.
|
|
*/
|
|
fdclose(curthread, file, fd);
|
|
|
|
/* drop extra reference */
|
|
fdrop(file, curthread);
|
|
}
|
|
|
|
static inline void
|
|
fd_install(unsigned int fd, struct linux_file *filp)
|
|
{
|
|
cap_rights_t rights;
|
|
struct file *file;
|
|
|
|
if (fget_unlocked(curthread->td_proc->p_fd, fd,
|
|
cap_rights_init(&rights), &file, NULL) != 0) {
|
|
file = NULL;
|
|
}
|
|
filp->_file = file;
|
|
finit(file, filp->f_mode, DTYPE_DEV, filp, &linuxfileops);
|
|
|
|
/* drop the extra reference */
|
|
fput(filp);
|
|
}
|
|
|
|
static inline int
|
|
get_unused_fd(void)
|
|
{
|
|
struct file *file;
|
|
int error;
|
|
int fd;
|
|
|
|
error = falloc(curthread, &file, &fd, 0);
|
|
if (error)
|
|
return -error;
|
|
/* drop the extra reference */
|
|
fdrop(file, curthread);
|
|
return fd;
|
|
}
|
|
|
|
static inline struct linux_file *
|
|
alloc_file(int mode, const struct file_operations *fops)
|
|
{
|
|
struct linux_file *filp;
|
|
|
|
filp = kzalloc(sizeof(*filp), GFP_KERNEL);
|
|
if (filp == NULL)
|
|
return (NULL);
|
|
filp->f_op = fops;
|
|
filp->f_mode = mode;
|
|
|
|
return filp;
|
|
}
|
|
|
|
struct fd {
|
|
struct linux_file *linux_file;
|
|
};
|
|
|
|
static inline void fdput(struct fd fd)
|
|
{
|
|
fput(fd.linux_file);
|
|
}
|
|
|
|
static inline struct fd fdget(unsigned int fd)
|
|
{
|
|
struct linux_file *f = linux_fget(fd);
|
|
return (struct fd){f};
|
|
}
|
|
|
|
#define file linux_file
|
|
#define fget linux_fget
|
|
|
|
#endif /* _LINUX_FILE_H_ */
|