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/*
* Copyright (c) 2009, 2010 Jeff Mahoney <jeffm@suse.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 LINUX
#include <stdint.h>
#include <inttypes.h>
#include <linux/blkpg.h>
#include <linux/fs.h>
#include <linux/hdreg.h>
/* ioctls <= 114 are present in Linux 2.4. The following ones have been
* added since then and headers containing them may not be available on
* every system. */
#define BLKTRACE_BDEV_SIZE 32
struct blk_user_trace_setup {
char name[BLKTRACE_BDEV_SIZE]; /* output */
uint16_t act_mask; /* input */
uint32_t buf_size; /* input */
uint32_t buf_nr; /* input */
uint64_t start_lba;
uint64_t end_lba;
uint32_t pid;
};
#ifndef BLKTRACESETUP
#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
#endif
#ifndef BLKTRACESTART
#define BLKTRACESTART _IO(0x12,116)
#endif
#ifndef BLKTRACESTART
#define BLKTRACESTOP _IO(0x12,117)
#endif
#ifndef BLKTRACETEARDOWN
#define BLKTRACETEARDOWN _IO(0x12,118)
#endif
#ifndef BLKDISCARD
#define BLKDISCARD _IO(0x12,119)
#endif
#ifndef BLKIOMIN
#define BLKIOMIN _IO(0x12,120)
#endif
#ifndef BLKIOOPT
#define BLKIOOPT _IO(0x12,121)
#endif
#ifndef BLKALIGNOFF
#define BLKALIGNOFF _IO(0x12,122)
#endif
#ifndef BLKPBSZGET
#define BLKPBSZGET _IO(0x12,123)
#endif
#ifndef BLKDISCARDZEROES
#define BLKDISCARDZEROES _IO(0x12,124)
#endif
#ifndef BLKSECDISCARD
#define BLKSECDISCARD _IO(0x12,125)
#endif
static const struct xlat blkpg_ops[] = {
{ BLKPG_ADD_PARTITION, "BLKPG_ADD_PARTITION", },
{ BLKPG_DEL_PARTITION, "BLKPG_DEL_PARTITION", },
{ 0, NULL },
};
static void
print_blkpg_req(struct tcb *tcp, struct blkpg_ioctl_arg *blkpg)
{
struct blkpg_partition p;
tprintf("{");
printxval(blkpg_ops, blkpg->op, "BLKPG_???");
tprintf(", flags=%d, datalen=%d, ",
blkpg->flags, blkpg->datalen);
if (umove(tcp, (long) blkpg->data, &p) < 0)
tprintf("%#lx}", (long) blkpg->data);
else
tprintf("{start=%lld, length=%lld, pno=%d, "
"devname=\"%.*s\", volname=\"%.*s\"}}",
p.start, p.length, p.pno,
(int) sizeof(p.devname), p.devname,
(int) sizeof(p.volname), p.volname);
}
int
block_ioctl(struct tcb *tcp, long code, long arg)
{
switch (code) {
/* take arg as a value, not as a pointer */
case BLKRASET:
case BLKFRASET:
if (entering(tcp))
tprintf(", %ld", arg);
break;
/* take a signed int */
case BLKROSET:
case BLKBSZSET:
if (entering(tcp)) {
int val;
if (umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %d", val);
}
break;
/* returns an unsigned short */
case BLKSECTGET:
if (exiting(tcp)) {
unsigned short val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %hu", val);
}
break;
/* return a signed int */
case BLKROGET:
case BLKBSZGET:
case BLKSSZGET:
case BLKALIGNOFF:
if (exiting(tcp)) {
int val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %d", val);
}
break;
/* return an unsigned int */
case BLKPBSZGET:
case BLKIOMIN:
case BLKIOOPT:
case BLKDISCARDZEROES:
if (exiting(tcp)) {
unsigned int val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %u", val);
}
break;
/* return a signed long */
case BLKRAGET:
case BLKFRAGET:
if (exiting(tcp)) {
long val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %ld", val);
}
break;
/* returns an unsigned long */
case BLKGETSIZE:
if (exiting(tcp)) {
unsigned long val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %lu", val);
}
break;
/* return an uint64_t */
case BLKGETSIZE64:
if (exiting(tcp)) {
uint64_t val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %" PRIu64, val);
}
break;
/* More complex types */
case BLKDISCARD:
case BLKSECDISCARD:
if (entering(tcp)) {
uint64_t range[2];
if (umove(tcp, arg, range) < 0)
tprintf(", %#lx", arg);
else
tprintf(", {%" PRIx64 ", %" PRIx64 "}",
range[0], range[1]);
}
break;
case HDIO_GETGEO:
if (exiting(tcp)) {
struct hd_geometry geo;
if (syserror(tcp) || umove(tcp, arg, &geo) < 0)
tprintf(", %#lx", arg);
else
tprintf(", {heads=%hhu, sectors=%hhu, "
"cylinders=%hu, start=%lu}",
geo.heads, geo.sectors,
geo.cylinders, geo.start);
}
break;
case BLKPG:
if (entering(tcp)) {
struct blkpg_ioctl_arg blkpg;
if (umove(tcp, arg, &blkpg) < 0)
tprintf(", %#lx", arg);
else {
tprintf(", ");
print_blkpg_req(tcp, &blkpg);
}
}
break;
case BLKTRACESETUP:
if (entering(tcp)) {
struct blk_user_trace_setup buts;
if (umove(tcp, arg, &buts) < 0)
tprintf(", %#lx", arg);
else
tprintf(", {act_mask=%hu, buf_size=%u, "
"buf_nr=%u, start_lba=%" PRIu64 ", "
"end_lba=%" PRIu64 ", pid=%u}",
buts.act_mask, buts.buf_size,
buts.buf_nr, buts.start_lba,
buts.end_lba, buts.pid);
}
if (exiting(tcp)) {
struct blk_user_trace_setup buts;
if (syserror(tcp) || umove(tcp, arg, &buts) < 0)
tprintf(", %#lx", arg);
else
tprintf(", {name=\"%.*s\"}",
(int) sizeof(buts.name), buts.name);
}
break;
/* No arguments or unhandled */
case BLKTRACESTART:
case BLKTRACESTOP:
case BLKTRACETEARDOWN:
case BLKFLSBUF: /* Requires driver knowlege */
case BLKRRPART: /* No args */
default:
if (entering(tcp))
tprintf(", %#lx", arg);
break;
};
return 1;
}
#endif /* LINUX */
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