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/*
* Copyright (c) 2009, 2010 Jeff Mahoney <jeffm@suse.com>
* Copyright (c) 2011-2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2011-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "defs.h"
#include DEF_MPERS_TYPE(struct_blk_user_trace_setup)
#include DEF_MPERS_TYPE(struct_blkpg_ioctl_arg)
#include DEF_MPERS_TYPE(struct_blkpg_partition)
#include <linux/ioctl.h>
#include <linux/fs.h>
typedef struct {
int op;
int flags;
int datalen;
void *data;
} struct_blkpg_ioctl_arg;
#define BLKPG_DEVNAMELTH 64
#define BLKPG_VOLNAMELTH 64
typedef struct {
int64_t start; /* starting offset in bytes */
int64_t length; /* length in bytes */
int pno; /* partition number */
char devname[BLKPG_DEVNAMELTH]; /* partition name, like sda5 or c0d1p2,
to be used in kernel messages */
char volname[BLKPG_VOLNAMELTH]; /* volume label */
} struct_blkpg_partition;
#define BLKTRACE_BDEV_SIZE 32
typedef 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;
} struct_blk_user_trace_setup;
/* Provide fall-back definitions for BLK* ioctls */
#define XLAT_MACROS_ONLY
# include "xlat/block_ioctl_cmds.h"
#undef XLAT_MACROS_ONLY
#include MPERS_DEFS
#include "print_fields.h"
#include "xlat/blkpg_ops.h"
static void
print_blkpg_req(struct tcb *tcp, const struct_blkpg_ioctl_arg *blkpg)
{
struct_blkpg_partition p;
PRINT_FIELD_XVAL("{", *blkpg, op, blkpg_ops, "BLKPG_???");
PRINT_FIELD_D(", ", *blkpg, flags);
PRINT_FIELD_D(", ", *blkpg, datalen);
tprints(", data=");
if (!umove_or_printaddr(tcp, ptr_to_kulong(blkpg->data), &p)) {
PRINT_FIELD_D("{", p, start);
PRINT_FIELD_D(", ", p, length);
PRINT_FIELD_D(", ", p, pno);
PRINT_FIELD_CSTRING(", ", p, devname);
PRINT_FIELD_CSTRING(", ", p, volname);
tprints("}");
}
tprints("}");
}
MPERS_PRINTER_DECL(int, block_ioctl, struct tcb *const tcp,
const unsigned int code, const kernel_ulong_t arg)
{
switch (code) {
/* take arg as a value, not as a pointer */
case BLKRASET:
case BLKFRASET:
tprintf(", %" PRI_klu, arg);
break;
/* return an unsigned short */
case BLKSECTGET:
case BLKROTATIONAL:
if (entering(tcp))
return 0;
tprints(", ");
printnum_short(tcp, arg, "%hu");
break;
/* return a signed int */
case BLKROGET:
case BLKBSZGET:
case BLKSSZGET:
case BLKALIGNOFF:
if (entering(tcp))
return 0;
ATTRIBUTE_FALLTHROUGH;
/* take a signed int */
case BLKROSET:
case BLKBSZSET:
tprints(", ");
printnum_int(tcp, arg, "%d");
break;
/* return an unsigned int */
case BLKPBSZGET:
case BLKIOMIN:
case BLKIOOPT:
case BLKDISCARDZEROES:
case BLKGETZONESZ:
case BLKGETNRZONES:
if (entering(tcp))
return 0;
tprints(", ");
printnum_int(tcp, arg, "%u");
break;
/* return a signed long */
case BLKRAGET:
case BLKFRAGET:
if (entering(tcp))
return 0;
tprints(", ");
printnum_slong(tcp, arg);
break;
/* returns an unsigned long */
case BLKGETSIZE:
if (entering(tcp))
return 0;
tprints(", ");
printnum_ulong(tcp, arg);
break;
/* returns an uint64_t */
case BLKGETSIZE64:
if (entering(tcp))
return 0;
tprints(", ");
printnum_int64(tcp, arg, "%" PRIu64);
break;
/* takes a pair of uint64_t */
case BLKDISCARD:
case BLKSECDISCARD:
case BLKZEROOUT:
tprints(", ");
printpair_int64(tcp, arg, "%" PRIu64);
break;
/* More complex types */
case BLKPG: {
struct_blkpg_ioctl_arg blkpg;
tprints(", ");
if (!umove_or_printaddr(tcp, arg, &blkpg))
print_blkpg_req(tcp, &blkpg);
break;
}
case BLKTRACESETUP:
if (entering(tcp)) {
struct_blk_user_trace_setup buts;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &buts))
break;
PRINT_FIELD_U("{", buts, act_mask);
PRINT_FIELD_U(", ", buts, buf_size);
PRINT_FIELD_U(", ", buts, buf_nr);
PRINT_FIELD_U(", ", buts, start_lba);
PRINT_FIELD_U(", ", buts, end_lba);
PRINT_FIELD_U(", ", buts, pid);
return 0;
} else {
struct_blk_user_trace_setup buts;
if (!syserror(tcp) && !umove(tcp, arg, &buts))
PRINT_FIELD_CSTRING(", ", buts, name);
tprints("}");
break;
}
/* No arguments */
case BLKRRPART:
case BLKFLSBUF:
case BLKTRACESTART:
case BLKTRACESTOP:
case BLKTRACETEARDOWN:
break;
default:
return RVAL_DECODED;
}
return RVAL_IOCTL_DECODED;
}
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