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Add in linsysfs. A linux 2.6 like sys filesystem to pacify the Linux

Browse Source 
LSI MegaRAID SAS utility.

Sponsored by:		IronPort Systems
Man page help from:	brueffer
This commit is contained in:
Doug Ambrisko 2006-05-09 22:27:01 +00:00
parent 4577652f10
commit 32397ce071
12 changed files with 401 additions and 0 deletions
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1
share/man/man5/Makefile
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@ -32,6 +32,7 @@ MAN= acct.5 \
libmap.conf.5 \
link.5 \
linprocfs.5 \
linsysfs.5 \
mailer.conf.5 \
make.conf.5 \
moduli.5 \

86
share/man/man5/linsysfs.5 Normal file
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@ -0,0 +1,86 @@
.\" Written by Garrett Wollman
.\" This file is in the public domain.
.\"
.\" $FreeBSD$
.\"
.Dd May 6, 2006
.Dt LINSYSFS 5
.Os
.Sh NAME
.Nm linsysfs
.Nd Linux system file system
.Sh SYNOPSIS
.Bd -literal
linsys /compat/linux/sys linsysfs rw 0 0
.Ed
.Sh DESCRIPTION
The Linux system file system, or
.Nm ,
emulates a subset of the Linux sys file system and is required for
the complete operation of some Linux binaries.
.Pp
The
.Nm
provides a two-level view of devices.
At the highest level, PCI devices themselves are named, according to
their bus, slot and function in the system hierachy.
PCI storage devices are listed in the scsi_host class with a device sym-link
to the PCI directories of the devices.
.Pp
Each device node is a directory containing some files and directories:
.Bl -tag -width status
.It Pa host
A place holder for storage
.Pa host
information.
.It Pa pci_id
A directory for the
.Pa pci_id
that contains either the device information or another directory structure
for a PCI bridge.
.El
.Pp
Each host node of scsi_host is a directory containing some files and directories:
.Bl -tag -width proc_name
.It Pa proc_name
The Linux registered driver name for these devices.
.It Pa device
A sym-link to the PCI
.Pa device
directory.
.El
.Sh FILES
.Bl -tag -width /compat/linux/sys/devices/pci0000:00 -compact
.It Pa /compat/linux/sys
The normal mount point for the
.Nm .
.It Pa /compat/linux/sys/class/scsi_host
The storage host node.
.It Pa /compat/linux/sys/devices/pci0000:00
The PCI device hierarchy node.
.El
.Sh SEE ALSO
.Xr mount 2 ,
.Xr unmount 2 ,
.Xr linprocfs 5 ,
.Xr procfs 5 ,
.Xr pseudofs 9
.Sh HISTORY
The
.Nm
first appeared in
.Fx 7.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
was derived from
.Nm linprocfs
by
.An Doug Ambrisko .
This manual page was edited by
.An Doug Ambrisko ,
based on the
.Xr linprocfs 5
manual page by
.An Garrett Wollman .

1
sys/amd64/conf/GENERIC
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@ -75,6 +75,7 @@ options SMP # Symmetric MultiProcessor Kernel
# Linux 32-bit ABI support
options COMPAT_LINUX32 # Compatible with i386 linux binaries
options LINPROCFS # Cannot be a module yet.
options LINSYSFS
# Bus support.
device acpi

4
sys/amd64/conf/NOTES
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@ -507,6 +507,10 @@ options COMPAT_LINUX32
# and PSEUDOFS)
options LINPROCFS
#Enable the linux-like sys filesystem support (requires COMPAT_LINUX32
# and PSEUDOFS)
options LINSYSFS
#
# SysVR4 ABI emulation
#

285
sys/compat/linsysfs/linsysfs.c Normal file
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@ -0,0 +1,285 @@
/*-
* Copyright (c) 2006 IronPort Systems
* 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, 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/blist.h>
#include <sys/conf.h>
#include <sys/exec.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/linker.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/sbuf.h>
#include <sys/smp.h>
#include <sys/socket.h>
#include <sys/vnode.h>
#include <sys/bus.h>
#include <sys/pciio.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <net/if.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_param.h>
#include <vm/vm_object.h>
#include <vm/swap_pager.h>
#include <machine/bus.h>
#include "opt_compat.h"
#ifdef COMPAT_LINUX32 /* XXX */
#include <machine/../linux32/linux.h>
#else
#include <machine/../linux/linux.h>
#endif
#include <compat/linux/linux_ioctl.h>
#include <compat/linux/linux_mib.h>
#include <compat/linux/linux_util.h>
#include <fs/pseudofs/pseudofs.h>
#include <fs/procfs/procfs.h>
struct scsi_host_queue {
TAILQ_ENTRY(scsi_host_queue) scsi_host_next;
char *path;
char *name;
};
TAILQ_HEAD(,scsi_host_queue) scsi_host_q;
static int host_number = 0;
static int
atoi(const char *str)
{
return (int)strtol(str, (char **)NULL, 10);
}
/*
* Filler function for proc_name
*/
static int
linsysfs_scsiname(PFS_FILL_ARGS)
{
struct scsi_host_queue *scsi_host;
int index;
if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) {
index = atoi(&pn->pn_parent->pn_name[4]);
} else {
sbuf_printf(sb, "unknown\n");
return (0);
}
TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) {
if (index-- == 0) {
sbuf_printf(sb, "%s\n", scsi_host->name);
return (0);
}
}
sbuf_printf(sb, "unknown\n");
return (0);
}
/*
* Filler function for device sym-link
*/
static int
linsysfs_link_scsi_host(PFS_FILL_ARGS)
{
struct scsi_host_queue *scsi_host;
int index;
if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) {
index = atoi(&pn->pn_parent->pn_name[4]);
} else {
sbuf_printf(sb, "unknown\n");
return (0);
}
TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) {
if (index-- == 0) {
sbuf_printf(sb, "../../../devices%s", scsi_host->path);
return(0);
}
}
sbuf_printf(sb, "unknown\n");
return (0);
}
#define PCI_DEV "pci"
static int
linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, char *path,
char *prefix)
{
struct scsi_host_queue *scsi_host;
struct pfs_node *sub_dir;
int i, nchildren;
device_t *children, parent;
devclass_t devclass;
const char *name = NULL;
struct pci_devinfo *dinfo;
char *device, *host, *new_path = path;
parent = device_get_parent(dev);
if (parent) {
devclass = device_get_devclass(parent);
if (devclass != NULL)
name = devclass_get_name(devclass);
if (name && strcmp(name, PCI_DEV) == 0) {
dinfo = device_get_ivars(dev);
if (dinfo) {
device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
new_path = malloc(MAXPATHLEN, M_TEMP,
M_WAITOK);
new_path[0] = '\000';
strcpy(new_path, path);
host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
device[0] = '\000';
sprintf(device, "%s:%02x:%02x.%x",
prefix,
dinfo->cfg.bus,
dinfo->cfg.slot,
dinfo->cfg.func);
strcat(new_path, "/");
strcat(new_path, device);
dir = pfs_create_dir(dir, device,
NULL, NULL, 0);
if (dinfo->cfg.baseclass == PCIC_STORAGE) {
/* DJA only make this if needed */
sprintf(host, "host%d", host_number++);
strcat(new_path, "/");
strcat(new_path, host);
sub_dir = pfs_create_dir(dir,
host, NULL, NULL, 0);
scsi_host = malloc(sizeof(
struct scsi_host_queue),
M_DEVBUF, M_NOWAIT);
scsi_host->path = malloc(
strlen(new_path) + 1,
M_DEVBUF, M_NOWAIT);
scsi_host->path[0] = '\000';
bcopy(new_path, scsi_host->path,
strlen(new_path) + 1);
scsi_host->name = "unknown";
sub_dir = pfs_create_dir(scsi, host,
NULL, NULL, 0);
pfs_create_link(sub_dir, "device",
&linsysfs_link_scsi_host,
NULL, NULL, 0);
pfs_create_file(sub_dir, "proc_name",
&linsysfs_scsiname,
NULL, NULL, PFS_RD);
scsi_host->name
= linux_driver_get_name_dev(dev);
TAILQ_INSERT_TAIL(&scsi_host_q,
scsi_host, scsi_host_next);
}
free(device, M_TEMP);
free(host, M_TEMP);
}
}
}
device_get_children(dev, &children, &nchildren);
for (i = 0; i < nchildren; i++) {
if (children[i])
linsysfs_run_bus(children[i], dir, scsi, new_path, prefix);
}
if (new_path != path)
free(new_path, M_TEMP);
return (1);
}
/*
* Constructor
*/
static int
linsysfs_init(PFS_INIT_ARGS)
{
struct pfs_node *root;
struct pfs_node *dir;
struct pfs_node *pci;
struct pfs_node *scsi;
devclass_t devclass;
device_t dev;
TAILQ_INIT(&scsi_host_q);
root = pi->pi_root;
/* /sys/class/... */
scsi = pfs_create_dir(root, "class", NULL, NULL, 0);
scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, 0);
/* /sys/device */
dir = pfs_create_dir(root, "devices", NULL, NULL, 0);
/* /sys/device/pci0000:00 */
pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, 0);
devclass = devclass_find("root");
if (devclass == NULL) {
return (0);
}
dev = devclass_get_device(devclass, 0);
linsysfs_run_bus(dev, pci, scsi, "/pci0000:00", "0000");
return (0);
}
/*
* Destructor
*/
static int
linsysfs_uninit(PFS_INIT_ARGS)
{
struct scsi_host_queue *scsi_host;
TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) {
TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next);
free(scsi_host->path, M_TEMP);
free(scsi_host, M_TEMP);
}
return (0);
}
PSEUDOFS(linsysfs, 1);
MODULE_DEPEND(linsysfs, linux, 1, 1, 1);
MODULE_DEPEND(linsysfs, procfs, 1, 1, 1);

1
sys/conf/files.amd64
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@ -218,6 +218,7 @@ compat/freebsd32/freebsd32_syscalls.c optional compat_ia32
compat/freebsd32/freebsd32_sysent.c optional compat_ia32
compat/ia32/ia32_sysvec.c optional compat_ia32
compat/linprocfs/linprocfs.c optional linprocfs
compat/linsysfs/linsysfs.c optional linsysfs
kern/imgact_elf32.c optional compat_ia32
#
# Linux/i386 binary support

1
sys/conf/files.i386
View File

@ -84,6 +84,7 @@ rr232x_lib.o optional rr232x \
#
#
compat/linprocfs/linprocfs.c optional linprocfs
compat/linsysfs/linsysfs.c optional linsysfs
compat/linux/linux_file.c optional compat_linux
compat/linux/linux_getcwd.c optional compat_linux
compat/linux/linux_ioctl.c optional compat_linux

1
sys/conf/files.pc98
View File

@ -54,6 +54,7 @@ opt_ah.h optional ath_hal \
clean "opt_ah.h"
#
compat/linprocfs/linprocfs.c optional linprocfs
compat/linsysfs/linsysfs.c optional linsysfs
compat/linux/linux_file.c optional compat_linux
compat/linux/linux_getcwd.c optional compat_linux
compat/linux/linux_ioctl.c optional compat_linux

4
sys/i386/conf/NOTES
View File

@ -1041,6 +1041,10 @@ options COMPAT_AOUT
# and PSEUDOFS)
options LINPROCFS
#Enable the linux-like sys filesystem support (requires COMPAT_LINUX
# and PSEUDOFS)
options LINSYSFS
#
# SysVR4 ABI emulation
#

2
sys/modules/Makefile
View File

@ -134,6 +134,7 @@ SUBDIR= ${_3dfx} \
libmbpool \
libmchain \
${_linprocfs} \
${_linsysfs} \
${_linux} \
lmc \
${_lnc} \
@ -357,6 +358,7 @@ _ie= ie
_if_ndis= if_ndis
_io= io
_linprocfs= linprocfs
_linsysfs= linsysfs
_linux= linux
_lnc= lnc
_mse= mse

11
sys/modules/linsysfs/Makefile Normal file
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@ -0,0 +1,11 @@
# $FreeBSD$
.PATH: ${.CURDIR}/../../compat/linsysfs
KMOD= linsysfs
SRCS= vnode_if.h \
device_if.h bus_if.h pci_if.h \
linsysfs.c \
opt_compat.h
.include <bsd.kmod.mk>

4
sys/pc98/conf/NOTES
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@ -658,6 +658,10 @@ options COMPAT_AOUT
# and PSEUDOFS)
options LINPROCFS
# Enable the linux-like sys filesystem support (requires COMPAT_LINUX
# and PSEUDOFS)
options LINSYSFS
#
# SysVR4 ABI emulation
#