1
0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-13 10:02:38 +00:00
freebsd/sys/i386/isa/bs/bs_isa.c
Archie Cobbs 2127f26023 Examine all occurrences of sprintf(), strcat(), and str[n]cpy()
for possible buffer overflow problems. Replaced most sprintf()'s
with snprintf(); for others cases, added terminating NUL bytes where
appropriate, replaced constants like "16" with sizeof(), etc.

These changes include several bug fixes, but most changes are for
maintainability's sake. Any instance where it wasn't "immediately
obvious" that a buffer overflow could not occur was made safer.

Reviewed by:	Bruce Evans <bde@zeta.org.au>
Reviewed by:	Matthew Dillon <dillon@apollo.backplane.com>
Reviewed by:	Mike Spengler <mks@networkcs.com>
1998-12-04 22:54:57 +00:00

190 lines
5.4 KiB
C

/* $NecBSD: bs_isa.c,v 1.3 1997/10/31 17:43:35 honda Exp $ */
/* $NetBSD$ */
/*
* [NetBSD for NEC PC98 series]
* Copyright (c) 1995, 1996 NetBSD/pc98 porting staff.
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
#include <i386/Cbus/dev/bs/bsif.h>
static int bs_isa_probe __P((struct device *, void *, void *));
static void bs_isa_attach __P((struct device *, struct device *, void *));
static void bs_args_copy
__P((struct bs_softc *, struct isa_attach_args *, struct bshw *));
struct cfattach bs_isa_ca = {
sizeof(struct bs_softc), bs_isa_probe, bs_isa_attach
};
static void
bs_args_copy(bsc, ia, hw)
struct bs_softc *bsc;
struct isa_attach_args *ia;
struct bshw *hw;
{
bsc->sc_hw = hw;
bsc->sc_iot = ia->ia_iot;
bsc->sc_memt = ia->ia_memt;
bsc->sc_dmat = ia->ia_dmat;
bsc->sc_delaybah = ia->ia_delaybah; /* should be die */
bsc->sc_iobase = ia->ia_iobase;
if (ia->ia_maddr != MADDRUNK)
bsc->sm_offset = BSHW_SMITFIFO_OFFSET;
else
bsc->sm_offset = 0;
bsc->sc_cfgflags = DVCFG_MINOR(ia->ia_cfgflags);
snprintf(bsc->sc_dvname, sizeof(bsc->sc_dvname),
"%s", bsc->sc_dev.dv_xname);
}
static int
bs_isa_probe(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct bs_softc *bsc = (void *) match;
struct isa_attach_args *ia = aux;
bus_space_handle_t ioh, memh = NULL;
bus_space_tag_t iot, memt;
struct bshw *hw;
u_int irq, drq;
int rv = 0;
hw = DVCFG_HW(&bshw_hwsel, DVCFG_MAJOR(ia->ia_cfgflags));
if (hw == NULL)
return rv;
iot = ia->ia_iot;
memt = ia->ia_memt;
if (ia->ia_iobase == IOBASEUNK)
{
printf("%s: iobase not specified. Assume default port(0x%x)\n",
bsc->sc_dvname, BSHW_DEFAULT_PORT);
ia->ia_iobase = BSHW_DEFAULT_PORT;
}
if (bus_space_map(iot, ia->ia_iobase, BSHW_IOSZ, 0, &ioh))
return rv;
if ((hw->hw_flags & BSHW_SMFIFO) != 0 && (ia->ia_maddr != MADDRUNK))
{
ia->ia_maddr = (ia->ia_maddr & (~((NBPG * 2) - 1))) + NBPG;
ia->ia_msize = NBPG;
if (bus_space_map(memt, ia->ia_maddr, NBPG, 0, &memh))
{
bus_space_unmap(iot, ioh, BSHW_IOSZ);
return 0;
}
}
else
ia->ia_maddr = MADDRUNK;
irq = IRQUNK;
drq = DRQUNK;
bsc->sc_ioh = ioh;
bsc->sc_memh = memh;
bs_args_copy(bsc, ia, hw);
if (bshw_board_probe(bsc, &drq, &irq))
goto bad;
ia->ia_irq = irq;
ia->ia_drq = drq;
ia->ia_iosize = BSHW_IOSZ;
rv = 1;
bad:
bus_space_unmap(iot, bsc->sc_ioh, BSHW_IOSZ);
if (ia->ia_maddr != MADDRUNK)
bus_space_unmap(memt, bsc->sc_memh, ia->ia_msize);
return rv;
}
static void
bs_isa_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
extern struct scsi_adapter pc98texa55bs;
extern struct scsi_device bs_dev;
struct bs_softc *bsc = (void *) self;
struct isa_attach_args *ia = aux;
bus_space_tag_t iot, memt;
struct bshw *hw;
int i;
printf("\n");
hw = DVCFG_HW(&bshw_hwsel, DVCFG_MAJOR(ia->ia_cfgflags));
iot = ia->ia_iot;
memt = ia->ia_memt;
if (bus_space_map(iot, ia->ia_iobase, BSHW_IOSZ, 0, &bsc->sc_ioh))
panic("%s: bus io map failed\n", bsc->sc_dev.dv_xname);
if (ia->ia_maddr != MADDRUNK &&
bus_space_map(memt, ia->ia_maddr, NBPG, 0, &bsc->sc_memh))
panic("%s: bus mem map failed\n", bsc->sc_dev.dv_xname);
if (isa_dmamap_create(NULL, ia->ia_drq, MAXBSIZE, BUS_DMA_NOWAIT))
{
printf("%s: can't set up ISA DMA map\n", bsc->sc_dev.dv_xname);
return;
}
/* system initialize */
bs_args_copy(bsc, ia, hw);
bs_hostque_init(bsc);
for (i = 0; i < NTARGETS; i++)
{
if (i != bsc->sc_hostid)
bs_init_target_info(bsc, i);
}
bs_init_ccbque(BS_MAX_CCB);
bsc->sc_hstate = BSC_BOOTUP;
bsc->sc_retry = RETRIES;
bsc->sc_wc = delaycount * 250;
bs_reset_nexus(bsc);
/* link upper layer */
bsc->sc_link.adapter_target = bsc->sc_hostid;
bsc->sc_link.openings = XSMAX;
bsc->sc_link.max_target = 7;
bsc->sc_link.channel = SCSI_CHANNEL_ONLY_ONE;
bsc->sc_link.adapter_softc = bsc;
bsc->sc_link.adapter = &pc98texa55bs;
bsc->sc_link.device = &bs_dev;
config_found(self, &bsc->sc_link, bsprint);
bsc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_BIO, bsintr, bsc);
bs_start_timeout(bsc);
}