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/*
* Copyright (c) 2007 Vladimir Nadvornik <nadvornik@suse.cz>
* Copyright (c) 2007-2017 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2015 Bart Van Assche <bart.vanassche@sandisk.com>
* 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 "defs.h"
#ifdef HAVE_SCSI_SG_H
#include DEF_MPERS_TYPE(struct_sg_io_hdr)
# include <scsi/sg.h>
typedef struct sg_io_hdr struct_sg_io_hdr;
#endif /* HAVE_SCSI_SG_H */
#include MPERS_DEFS
#include "xlat/sg_io_info.h"
#ifdef HAVE_SCSI_SG_H
# include "xlat/sg_io_dxfer_direction.h"
# include "xlat/sg_io_flags.h"
static void
print_sg_io_buffer(struct tcb *const tcp, const kernel_ulong_t addr,
const unsigned int data_size, const unsigned int iovec_count)
{
if (iovec_count) {
tprint_iov_upto(tcp, iovec_count, addr, IOV_DECODE_STR,
data_size);
} else {
printstr_ex(tcp, addr, data_size, QUOTE_FORCE_HEX);
}
}
static int
decode_request(struct tcb *const tcp, const kernel_ulong_t arg)
{
struct_sg_io_hdr sg_io;
static const size_t skip_iid =
offsetof(struct_sg_io_hdr, dxfer_direction);
tprints("{interface_id='S', ");
if (umoven_or_printaddr(tcp, arg + skip_iid, sizeof(sg_io) - skip_iid,
&sg_io.dxfer_direction)) {
tprints("}");
return RVAL_DECODED | 1;
}
tprints("dxfer_direction=");
printxval(sg_io_dxfer_direction, sg_io.dxfer_direction,
"SG_DXFER_???");
tprintf(", cmd_len=%u, cmdp=", sg_io.cmd_len);
print_sg_io_buffer(tcp, ptr_to_kulong(sg_io.cmdp), sg_io.cmd_len, 0);
tprintf(", mx_sb_len=%d", sg_io.mx_sb_len);
tprintf(", iovec_count=%d", sg_io.iovec_count);
tprintf(", dxfer_len=%u", sg_io.dxfer_len);
tprintf(", timeout=%u", sg_io.timeout);
tprints(", flags=");
printflags(sg_io_flags, sg_io.flags, "SG_FLAG_???");
if (sg_io.dxfer_direction == SG_DXFER_TO_DEV ||
sg_io.dxfer_direction == SG_DXFER_TO_FROM_DEV) {
tprints(", dxferp=");
print_sg_io_buffer(tcp, ptr_to_kulong(sg_io.dxferp),
sg_io.dxfer_len, sg_io.iovec_count);
}
struct_sg_io_hdr *entering_sg_io = malloc(sizeof(*entering_sg_io));
if (entering_sg_io) {
memcpy(entering_sg_io, &sg_io, sizeof(sg_io));
entering_sg_io->interface_id = (unsigned char) 'S';
set_tcb_priv_data(tcp, entering_sg_io, free);
}
return 1;
}
static int
decode_response(struct tcb *const tcp, const kernel_ulong_t arg)
{
struct_sg_io_hdr *entering_sg_io = get_tcb_priv_data(tcp);
struct_sg_io_hdr sg_io;
if (umove(tcp, arg, &sg_io) < 0) {
/* print i/o fields fetched on entering syscall */
if (entering_sg_io->dxfer_direction == SG_DXFER_FROM_DEV) {
tprints(", dxferp=");
printaddr(ptr_to_kulong(entering_sg_io->dxferp));
}
tprints(", sbp=");
printaddr(ptr_to_kulong(entering_sg_io->sbp));
return RVAL_DECODED | 1;
}
if (sg_io.interface_id != entering_sg_io->interface_id) {
tprintf(" => interface_id=%u", sg_io.interface_id);
return RVAL_DECODED | 1;
}
if (sg_io.dxfer_direction == SG_DXFER_FROM_DEV ||
sg_io.dxfer_direction == SG_DXFER_TO_FROM_DEV) {
uint32_t din_len = sg_io.dxfer_len;
if (sg_io.resid > 0 && (unsigned int) sg_io.resid <= din_len)
din_len -= sg_io.resid;
if (sg_io.dxfer_direction == SG_DXFER_FROM_DEV) {
tprints(", dxferp=");
} else if (din_len) {
tprints(" => dxferp=");
}
if (sg_io.dxfer_direction == SG_DXFER_FROM_DEV || din_len) {
print_sg_io_buffer(tcp, ptr_to_kulong(sg_io.dxferp),
din_len, sg_io.iovec_count);
}
}
tprintf(", status=%#x", sg_io.status);
tprintf(", masked_status=%#x", sg_io.masked_status);
tprintf(", msg_status=%#x", sg_io.msg_status);
tprintf(", sb_len_wr=%u, sbp=", sg_io.sb_len_wr);
print_sg_io_buffer(tcp, ptr_to_kulong(sg_io.sbp), sg_io.sb_len_wr, 0);
tprintf(", host_status=%#x", sg_io.host_status);
tprintf(", driver_status=%#x", sg_io.driver_status);
tprintf(", resid=%d", sg_io.resid);
tprintf(", duration=%u", sg_io.duration);
tprints(", info=");
printflags(sg_io_info, sg_io.info, "SG_INFO_???");
return RVAL_DECODED | 1;
}
#else /* !HAVE_SCSI_SG_H */
static int
decode_request(struct tcb *const tcp, const kernel_ulong_t arg)
{
tprints("{interface_id='S', ...}");
return RVAL_DECODED | 1;
}
static int
decode_response(struct tcb *const tcp, const kernel_ulong_t arg)
{
return 0;
}
#endif
MPERS_PRINTER_DECL(int, decode_sg_io_v3,
struct tcb *const tcp, const kernel_ulong_t arg)
{
return entering(tcp) ? decode_request(tcp, arg)
: decode_response(tcp, arg);
}
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