scsi.c: enhance SG_IO ioctl parser

Fix SG_IO ioctl output in case of failed umove

* scsi.c: Include <linux/ioctl.h> instead of <sys/ioctl.h>.
Update for RVAL_DECODED.
(print_sg_io_v3_req, print_sg_io_v3_res, print_sg_io_v4_req,
print_sg_io_v4_res): Do not print address in case of failed umove.
(scsi_ioctl): Use printaddr.
This commit is contained in:
Дмитрий Левин 2015-07-07 21:38:07 +03:00
parent 317d19e8e9
commit 3d0e1f331f

108
scsi.c
View File

@ -30,7 +30,7 @@
#ifdef HAVE_SCSI_SG_H
# include <sys/ioctl.h>
# include <linux/ioctl.h>
# include <scsi/sg.h>
# include "xlat/sg_io_dxfer_direction.h"
@ -67,17 +67,16 @@ out:
tprints("]");
}
static void
print_sg_io_v3_req(struct tcb *tcp, long arg)
static int
print_sg_io_v3_req(struct tcb *tcp, const long arg)
{
struct sg_io_hdr sg_io;
if (umove(tcp, arg, &sg_io) < 0) {
tprintf(", %#lx", arg);
return;
tprints("???}");
return RVAL_DECODED | 1;
}
tprints(", ");
printxval(sg_io_dxfer_direction, sg_io.dxfer_direction,
"SG_DXFER_???");
tprintf(", cmd[%u]=", sg_io.cmd_len);
@ -99,15 +98,16 @@ print_sg_io_v3_req(struct tcb *tcp, long arg)
print_sg_io_buffer(tcp, (unsigned long) sg_io.dxferp,
sg_io.dxfer_len);
}
return 1;
}
static void
print_sg_io_v3_res(struct tcb *tcp, long arg)
print_sg_io_v3_res(struct tcb *tcp, const long arg)
{
struct sg_io_hdr sg_io;
if (umove(tcp, arg, &sg_io) < 0) {
tprintf(", %#lx", arg);
tprints(", ???");
return;
}
@ -139,17 +139,16 @@ print_sg_io_v3_res(struct tcb *tcp, long arg)
#ifdef HAVE_LINUX_BSG_H
static void
print_sg_io_v4_req(struct tcb *tcp, long arg)
static int
print_sg_io_v4_req(struct tcb *tcp, const long arg)
{
struct sg_io_v4 sg_io;
if (umove(tcp, arg, &sg_io) < 0) {
tprintf(", %#lx", arg);
return;
tprints("???}");
return RVAL_DECODED | 1;
}
tprints(", ");
printxval(bsg_protocol, sg_io.protocol, "BSG_PROTOCOL_???");
tprints(", ");
printxval(bsg_subprotocol, sg_io.subprotocol, "BSG_SUB_PROTOCOL_???");
@ -175,16 +174,17 @@ print_sg_io_v4_req(struct tcb *tcp, long arg)
1, sg_io.dout_xfer_len);
else
print_sg_io_buffer(tcp, sg_io.dout_xferp, sg_io.dout_xfer_len);
return 1;
}
static void
print_sg_io_v4_res(struct tcb *tcp, long arg)
print_sg_io_v4_res(struct tcb *tcp, const long arg)
{
struct sg_io_v4 sg_io;
uint32_t din_len;
if (umove(tcp, arg, &sg_io) < 0) {
tprintf(", %#lx", arg);
tprints(", ???");
return;
}
@ -214,78 +214,76 @@ print_sg_io_v4_res(struct tcb *tcp, long arg)
#else /* !HAVE_LINUX_BSG_H */
static void
print_sg_io_v4_req(struct tcb *tcp, long arg)
static int
print_sg_io_v4_req(struct tcb *tcp, const long arg)
{
tprintf(", %#lx", arg);
tprints("...}");
return RVAL_DECODED | 1;
}
static void
print_sg_io_v4_res(struct tcb *tcp, long arg)
print_sg_io_v4_res(struct tcb *tcp, const long arg)
{
}
#endif
static void
print_sg_io_req(struct tcb *tcp, uint32_t iid, long arg)
static int
print_sg_io_req(struct tcb *tcp, uint32_t iid, const long arg)
{
tprintf("{'%c'", iid);
tprintf("{'%c', ", iid);
switch (iid) {
case 'S':
print_sg_io_v3_req(tcp, arg);
break;
return print_sg_io_v3_req(tcp, arg);
case 'Q':
print_sg_io_v4_req(tcp, arg);
break;
return print_sg_io_v4_req(tcp, arg);
default:
tprints(", ...");
tprints("...}");
return RVAL_DECODED | 1;
}
}
static void
print_sg_io_res(struct tcb *tcp, uint32_t iid, long arg)
print_sg_io_res(struct tcb *tcp, uint32_t iid, const long arg)
{
if (!syserror(tcp)) {
switch (iid) {
case 'S':
print_sg_io_v3_res(tcp, arg);
break;
case 'Q':
print_sg_io_v4_res(tcp, arg);
break;
}
switch (iid) {
case 'S':
print_sg_io_v3_res(tcp, arg);
break;
case 'Q':
print_sg_io_v4_res(tcp, arg);
break;
}
tprintf("}");
}
int
scsi_ioctl(struct tcb *tcp, const unsigned int code, long arg)
scsi_ioctl(struct tcb *tcp, const unsigned int code, const long arg)
{
uint32_t iid;
switch (code) {
case SG_IO:
if (entering(tcp)) {
tprints(", ");
if (umove(tcp, arg, &iid) < 0)
tprintf("%#lx", arg);
else
print_sg_io_req(tcp, iid, arg);
if (SG_IO != code)
return RVAL_DECODED;
if (entering(tcp)) {
tprints(", ");
if (!arg || umove(tcp, arg, &iid) < 0) {
printaddr(arg);
return RVAL_DECODED | 1;
} else {
if (umove(tcp, arg, &iid) >= 0)
return print_sg_io_req(tcp, iid, arg);
}
} else {
if (!syserror(tcp)) {
if (umove(tcp, arg, &iid) < 0)
tprints(", ???");
else
print_sg_io_res(tcp, iid, arg);
}
break;
default:
if (entering(tcp))
tprintf(", %#lx", arg);
break;
tprintf("}");
return RVAL_DECODED | 1;
}
return 1;
}
#endif /* HAVE_SCSI_SG_H */