6ebd888016
management tools can work. This is not totally connected to the build
yet. The mfi(4) change have not been MFC'ed yet. This will be done
shortly. I'm trying to do this in chunks so I don't totally break
the build on a missed commit. This has passed make universe a while
ago:
Enhance the Linux emulation layer to make MegaRAID SAS managements tool happy.
Add back in a scheme to emulate old type major/minor numbers via hooks into
stat, linprocfs to return major/minors that Linux app's expect. Currently
only /dev/null is always registered. Drivers can register via the Linux
type shim similar to the ioctl shim but by using
linux_device_register_handler/linux_device_unregister_handler functions.
The structure is:
struct linux_device_handler {
char *bsd_driver_name;
char *linux_driver_name;
char *bsd_device_name;
char *linux_device_name;
int linux_major;
int linux_minor;
int linux_char_device;
};
Linprocfs uses this to display the major number of the driver. The
soon to be available linsysfs will use it to fill in the driver name.
Linux_stat uses it to translate the major/minor into Linux type values.
Note major numbers are dynamically assigned via passing in a -1 for
the major number so we don't need to keep track of them.
This is somewhat needed due to us switching to our devfs.
132 lines
4.0 KiB
C
132 lines
4.0 KiB
C
/*-
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* Copyright (c) 1994 Christos Zoulas
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* Copyright (c) 1995 Frank van der Linden
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* Copyright (c) 1995 Scott Bartram
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
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* from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
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* $FreeBSD$
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*/
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/*
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* This file is pretty much the same as Christos' svr4_util.h
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* (for now).
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*/
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#ifndef _LINUX_UTIL_H_
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#define _LINUX_UTIL_H_
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <machine/vmparam.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/syslog.h>
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#include <sys/cdefs.h>
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#include <sys/uio.h>
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#include <sys/bus.h>
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static __inline caddr_t stackgap_init(void);
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static __inline void *stackgap_alloc(caddr_t *, size_t);
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#define szsigcode (*(curthread->td_proc->p_sysent->sv_szsigcode))
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#define psstrings (curthread->td_proc->p_sysent->sv_psstrings)
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static __inline caddr_t
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stackgap_init()
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{
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return (caddr_t)(psstrings - szsigcode - SPARE_USRSPACE);
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}
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static __inline void *
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stackgap_alloc(sgp, sz)
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caddr_t *sgp;
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size_t sz;
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{
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void *p = (void *) *sgp;
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sz = ALIGN(sz);
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if (*sgp + sz > (caddr_t)(psstrings - szsigcode))
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return NULL;
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*sgp += sz;
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return p;
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}
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extern const char linux_emul_path[];
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int linux_emul_convpath(struct thread *, char *, enum uio_seg, char **, int);
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#define LCONVPATH(td, upath, pathp, i) \
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do { \
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int _error; \
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\
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_error = linux_emul_convpath(td, upath, UIO_USERSPACE, \
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pathp, i); \
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if (*(pathp) == NULL) \
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return (_error); \
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} while (0)
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#define LCONVPATHEXIST(td, upath, pathp) LCONVPATH(td, upath, pathp, 0)
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#define LCONVPATHCREAT(td, upath, pathp) LCONVPATH(td, upath, pathp, 1)
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#define LFREEPATH(path) free(path, M_TEMP)
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#define DUMMY(s) \
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int \
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linux_ ## s(struct thread *td, struct linux_ ## s ## _args *args) \
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{ \
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static pid_t pid; \
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\
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if (pid != td->td_proc->p_pid) { \
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linux_msg(td, "syscall %s not implemented", #s); \
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pid = td->td_proc->p_pid; \
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}; \
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return (ENOSYS); \
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} \
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struct __hack
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void linux_msg(const struct thread *td, const char *fmt, ...)
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__printflike(2, 3);
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struct linux_device_handler {
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char *bsd_driver_name;
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char *linux_driver_name;
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char *bsd_device_name;
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char *linux_device_name;
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int linux_major;
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int linux_minor;
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int linux_char_device;
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};
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int linux_device_register_handler(struct linux_device_handler *h);
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int linux_device_unregister_handler(struct linux_device_handler *h);
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char *linux_driver_get_name_dev(device_t dev);
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int linux_driver_get_major_minor(char *node, int *major, int *minor);
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char *linux_get_char_devices(void);
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void linux_free_get_char_devices(char *string);
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#endif /* !_LINUX_UTIL_H_ */
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