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btrfs.c
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/*
* Copyright (c) 2016 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 HAVE_LINUX_BTRFS_H
#include DEF_MPERS_TYPE(struct_btrfs_ioctl_dev_replace_args)
#include DEF_MPERS_TYPE(struct_btrfs_ioctl_send_args)
#include DEF_MPERS_TYPE(struct_btrfs_ioctl_received_subvol_args)
#include DEF_MPERS_TYPE(struct_btrfs_ioctl_vol_args_v2)
# include <linux/btrfs.h>
typedef struct btrfs_ioctl_dev_replace_args
struct_btrfs_ioctl_dev_replace_args;
typedef struct btrfs_ioctl_send_args
struct_btrfs_ioctl_send_args;
typedef struct btrfs_ioctl_received_subvol_args
struct_btrfs_ioctl_received_subvol_args;
typedef struct btrfs_ioctl_vol_args_v2
struct_btrfs_ioctl_vol_args_v2;
#endif /* HAVE_LINUX_BTRFS_H */
#include MPERS_DEFS
#ifdef HAVE_LINUX_BTRFS_H
#include <linux/fs.h>
/*
* Prior to Linux 3.12, the BTRFS_IOC_DEFAULT_SUBVOL used u64 in
* its definition, which isn't exported by the kernel.
*/
typedef __u64 u64;
#ifndef HAVE_STRUCT_BTRFS_IOCTL_FEATURE_FLAGS_COMPAT_FLAGS
struct btrfs_ioctl_feature_flags {
uint64_t compat_flags;
uint64_t compat_ro_flags;
uint64_t incompat_flags;
};
#endif
#ifndef HAVE_STRUCT_BTRFS_IOCTL_DEFRAG_RANGE_ARGS_START
struct btrfs_ioctl_defrag_range_args {
uint64_t start;
uint64_t len;
uint64_t flags;
uint32_t extent_thresh;
uint32_t compress_type;
uint32_t unused[4];
};
#endif
#ifndef BTRFS_LABEL_SIZE
# define BTRFS_LABEL_SIZE 256
#endif
#ifndef BTRFS_FIRST_FREE_OBJECTID
# define BTRFS_FIRST_FREE_OBJECTID 256ULL
#endif
#ifndef BTRFS_IOC_QUOTA_RESCAN
struct btrfs_ioctl_quota_rescan_args {
uint64_t flags, progress, reserved[6];
};
# define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
struct btrfs_ioctl_quota_rescan_args)
# define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
struct btrfs_ioctl_quota_rescan_args)
#endif
#ifndef BTRFS_IOC_QUOTA_RESCAN_WAIT
# define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
#endif
#ifndef BTRFS_IOC_GET_FEATURES
# define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
struct btrfs_ioctl_feature_flags)
# define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
struct btrfs_ioctl_feature_flags[2])
# define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
struct btrfs_ioctl_feature_flags[3])
#endif
#ifndef BTRFS_IOC_TREE_SEARCH_V2
# define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \
struct btrfs_ioctl_search_args_v2)
struct btrfs_ioctl_search_args_v2 {
struct btrfs_ioctl_search_key key; /* in/out - search parameters */
uint64_t buf_size; /* in - size of buffer
* out - on EOVERFLOW: needed size
* to store item */
uint64_t buf[0]; /* out - found items */
};
#endif
#include "xlat/btrfs_balance_args.h"
#include "xlat/btrfs_balance_ctl_cmds.h"
#include "xlat/btrfs_balance_flags.h"
#include "xlat/btrfs_balance_state.h"
#include "xlat/btrfs_compress_types.h"
#include "xlat/btrfs_defrag_flags.h"
#include "xlat/btrfs_dev_replace_cmds.h"
#include "xlat/btrfs_dev_replace_results.h"
#include "xlat/btrfs_dev_replace_state.h"
#include "xlat/btrfs_dev_stats_flags.h"
#include "xlat/btrfs_dev_stats_values.h"
#include "xlat/btrfs_features_compat.h"
#include "xlat/btrfs_features_compat_ro.h"
#include "xlat/btrfs_features_incompat.h"
#include "xlat/btrfs_key_types.h"
#include "xlat/btrfs_qgroup_ctl_cmds.h"
#include "xlat/btrfs_qgroup_inherit_flags.h"
#include "xlat/btrfs_qgroup_limit_flags.h"
#include "xlat/btrfs_qgroup_status_flags.h"
#include "xlat/btrfs_scrub_flags.h"
#include "xlat/btrfs_send_flags.h"
#include "xlat/btrfs_snap_flags_v2.h"
#include "xlat/btrfs_space_info_flags.h"
#include "xlat/btrfs_tree_objectids.h"
static inline char
prnibble(char v)
{
if (v >= 10)
return 'a' + (v - 10);
return '0' + v;
}
/* 8-4-4-4-12 = 36 characters */
#define UUID_STRING_SIZE 36
/* Formats uuid, returns 0 if it's all zeroes */
static int
btrfs_unparse_uuid(unsigned char *uuid, char *out)
{
int i;
int ret = 0;
for (i = 0; i < BTRFS_UUID_SIZE; i++) {
if (i == 4 || i == 6 || i == 8 || i == 10)
*out++ = '-';
*out++ = prnibble(uuid[i] >> 4);
*out++ = prnibble(uuid[i] & 0xf);
if (uuid[i])
ret = 1;
}
*out = '\0';
return ret;
}
static void
print_u64(const char *name, uint64_t value)
{
tprintf(", %s=%" PRIu64, name, value);
if (value == UINT64_MAX)
tprints(" /* UINT64_MAX */");
}
#define print_member_u64(obj, name) print_u64(#name, obj->name)
static void
btrfs_print_balance_args(const char *name, const struct btrfs_balance_args *bba)
{
tprintf(", %s={profiles=", name);
printflags64(btrfs_space_info_flags, bba->profiles,
"BTRFS_BLOCK_GROUP_???");
print_member_u64(bba, usage);
print_member_u64(bba, devid);
print_member_u64(bba, pstart);
print_member_u64(bba, pend);
print_member_u64(bba, vstart);
print_member_u64(bba, vend);
print_member_u64(bba, target);
tprints(", flags=");
printflags64(btrfs_balance_args, bba->flags, "BTRFS_BALANCE_ARGS_???");
tprints("}");
}
static void
btrfs_print_balance(struct tcb *const tcp, const kernel_ulong_t arg, bool out)
{
struct btrfs_ioctl_balance_args balance_args;
if (umove_or_printaddr(tcp, arg, &balance_args))
return;
tprints("{flags=");
printflags64(btrfs_balance_flags, balance_args.flags,
"BTRFS_BALANCE_???");
if (out) {
tprints(", state=");
printflags64(btrfs_balance_state, balance_args.state,
"BTRFS_BALANCE_STATE_???");
}
if (balance_args.flags & BTRFS_BALANCE_DATA)
btrfs_print_balance_args("data", &balance_args.data);
if (balance_args.flags & BTRFS_BALANCE_METADATA)
btrfs_print_balance_args("meta", &balance_args.meta);
if (balance_args.flags & BTRFS_BALANCE_SYSTEM)
btrfs_print_balance_args("sys", &balance_args.sys);
tprints("}");
}
static void
btrfs_print_features(const struct btrfs_ioctl_feature_flags *flags)
{
tprints("{compat_flags=");
printflags64(btrfs_features_compat, flags->compat_flags,
"BTRFS_FEATURE_COMPAT_???");
tprints(", compat_ro_flags=");
printflags64(btrfs_features_compat_ro, flags->compat_ro_flags,
"BTRFS_FEATURE_COMPAT_RO_???");
tprints(", incompat_flags=");
printflags64(btrfs_features_incompat, flags->incompat_flags,
"BTRFS_FEATURE_INCOMPAT_???");
tprints("}");
}
static void
btrfs_print_qgroup_limit(const struct btrfs_qgroup_limit *lim)
{
tprints("{flags=");
printflags64(btrfs_qgroup_limit_flags, lim->flags,
"BTRFS_QGROUP_LIMIT_???");
tprintf(", max_rfer=%" PRI__u64 ", max_excl=%" PRI__u64
", rsv_rfer=%" PRI__u64 ", rsv_excl=%" PRI__u64 "}",
lim->max_rfer, lim->max_excl,
lim->rsv_rfer, lim->rsv_excl);
}
static void
btrfs_print_key_type(uint32_t type)
{
const char *str = xlookup(btrfs_key_types, type);
tprintf("%u", type);
if (str)
tprintf(" /* %s */", str);
}
static void
btrfs_print_objectid(uint64_t objectid)
{
const char *str = xlookup(btrfs_tree_objectids, objectid);
tprintf("%" PRIu64, objectid);
if (str)
tprintf(" /* %s */", str);
}
static void
btrfs_print_data_container_header(const struct btrfs_data_container *container)
{
tprintf("{bytes_left=%u, bytes_missing=%u"
", elem_cnt=%u, elem_missed=%u, val=",
container->bytes_left, container->bytes_missing,
container->elem_cnt, container->elem_missed);
}
static void
btrfs_print_data_container_footer(void)
{
tprints("}");
}
static bool
print_btrfs_data_container_logical_ino(struct tcb *tcp, void *elem_buf,
size_t elem_size, void *data)
{
const uint64_t *const record = elem_buf;
tprintf("{inum=%" PRIu64 ", offset=%" PRIu64 ", root=%" PRIu64 "}",
record[0], record[1], record[2]);
return true;
}
static void
btrfs_print_logical_ino_container(struct tcb *tcp,
const uint64_t inodes_addr)
{
struct btrfs_data_container container;
if (umove_or_printaddr(tcp, inodes_addr, &container))
return;
btrfs_print_data_container_header(&container);
if (abbrev(tcp)) {
tprints("...");
} else {
const uint64_t val_addr =
inodes_addr + offsetof(typeof(container), val);
uint64_t record[3];
print_array(tcp, val_addr, container.elem_cnt / 3,
record, sizeof(record),
umoven_or_printaddr,
print_btrfs_data_container_logical_ino, 0);
}
btrfs_print_data_container_footer();
}
static bool
print_btrfs_data_container_ino_path(struct tcb *tcp, void *elem_buf,
size_t elem_size, void *data)
{
const uint64_t *const offset = elem_buf;
const uint64_t *const val_addr = data;
printpath(tcp, *val_addr + *offset);
return true;
}
static void
btrfs_print_ino_path_container(struct tcb *tcp,
const uint64_t fspath_addr)
{
struct btrfs_data_container container;
if (umove_or_printaddr(tcp, fspath_addr, &container))
return;
btrfs_print_data_container_header(&container);
if (abbrev(tcp)) {
tprints("...");
} else {
uint64_t val_addr =
fspath_addr + offsetof(typeof(container), val);
uint64_t offset;
print_array(tcp, val_addr, container.elem_cnt,
&offset, sizeof(offset),
umoven_or_printaddr,
print_btrfs_data_container_ino_path, &val_addr);
}
btrfs_print_data_container_footer();
}
static bool
print_uint64(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
{
tprintf("%" PRIu64, * (uint64_t *) elem_buf);
return true;
}
static void
btrfs_print_qgroup_inherit(struct tcb *const tcp, const kernel_ulong_t qgi_addr)
{
struct btrfs_qgroup_inherit inherit;
if (umove_or_printaddr(tcp, qgi_addr, &inherit))
return;
tprints("{flags=");
printflags64(btrfs_qgroup_inherit_flags, inherit.flags,
"BTRFS_QGROUP_INHERIT_???");
tprintf(", num_qgroups=%" PRI__u64 ", num_ref_copies=%" PRI__u64
", num_excl_copies=%" PRI__u64 ", lim=",
inherit.num_qgroups, inherit.num_ref_copies,
inherit.num_excl_copies);
btrfs_print_qgroup_limit(&inherit.lim);
tprints(", qgroups=");
if (abbrev(tcp)) {
tprints("...");
} else {
uint64_t record;
print_array(tcp, qgi_addr + offsetof(typeof(inherit), qgroups),
inherit.num_qgroups, &record, sizeof(record),
umoven_or_printaddr, print_uint64, 0);
}
tprints("}");
}
static void
print_key_value_internal(struct tcb *tcp, const char *name, uint64_t value)
{
if (value) {
tprintf(", %s=%" PRIu64, name, value);
if (value == UINT64_MAX)
tprints(" /* UINT64_MAX */");
}
}
#define print_key_value(tcp, key, name) \
print_key_value_internal((tcp), #name, (key)->name)
static void
btrfs_print_tree_search(struct tcb *tcp, struct btrfs_ioctl_search_key *key,
uint64_t buf_addr, uint64_t buf_size, bool print_size)
{
if (entering(tcp)) {
tprints("{key={tree_id=");
btrfs_print_objectid(key->tree_id);
if (key->min_objectid != BTRFS_FIRST_FREE_OBJECTID ||
!abbrev(tcp)) {
tprints(", min_objectid=");
btrfs_print_objectid(key->min_objectid);
}
if (key->max_objectid != BTRFS_LAST_FREE_OBJECTID ||
!abbrev(tcp)) {
tprints(", max_objectid=");
btrfs_print_objectid(key->max_objectid);
}
print_key_value(tcp, key, min_offset);
print_key_value(tcp, key, max_offset);
print_key_value(tcp, key, min_transid);
print_key_value(tcp, key, max_transid);
tprints(", min_type=");
btrfs_print_key_type(key->min_type);
tprints(", max_type=");
btrfs_print_key_type(key->max_type);
tprintf(", nr_items=%u}", key->nr_items);
if (print_size)
tprintf(", buf_size=%" PRIu64, buf_size);
tprints("}");
} else {
tprintf("{key={nr_items=%u}", key->nr_items);
if (print_size)
tprintf(", buf_size=%" PRIu64, buf_size);
tprints(", buf=");
if (abbrev(tcp))
tprints("...");
else {
uint64_t i;
uint64_t off = 0;
tprints("[");
for (i = 0; i < key->nr_items; i++) {
struct btrfs_ioctl_search_header sh;
uint64_t addr = buf_addr + off;
if (i)
tprints(", ");
if (i > max_strlen ||
umove(tcp, addr, &sh)) {
tprints("...");
break;
}
tprintf("{transid=%" PRI__u64 ", objectid=",
sh.transid);
btrfs_print_objectid(sh.objectid);
tprintf(", offset=%" PRI__u64 ", type=", sh.offset);
btrfs_print_key_type(sh.type);
tprintf(", len=%u}", sh.len);
off += sizeof(sh) + sh.len;
}
tprints("]");
}
tprints("}");
}
}
static bool
print_objectid_callback(struct tcb *tcp, void *elem_buf,
size_t elem_size, void *data)
{
btrfs_print_objectid(* (uint64_t *) elem_buf);
return true;
}
static bool
print_btrfs_ioctl_space_info(struct tcb *tcp, void *elem_buf,
size_t elem_size, void *data)
{
const struct btrfs_ioctl_space_info *info = elem_buf;
tprints("{flags=");
printflags64(btrfs_space_info_flags, info->flags,
"BTRFS_SPACE_INFO_???");
tprintf(", total_bytes=%" PRI__u64 ", used_bytes=%" PRI__u64 "}",
info->total_bytes, info->used_bytes);
return true;
}
MPERS_PRINTER_DECL(int, btrfs_ioctl,
struct tcb *const tcp, const unsigned int code,
const kernel_ulong_t arg)
{
switch (code) {
/* Take no arguments; command only. */
case BTRFS_IOC_TRANS_START:
case BTRFS_IOC_TRANS_END:
case BTRFS_IOC_SYNC:
case BTRFS_IOC_SCRUB_CANCEL:
case BTRFS_IOC_QUOTA_RESCAN_WAIT:
/*
* The codes for these ioctls are based on each accepting a
* vol_args but none of them actually consume an argument.
*/
case BTRFS_IOC_DEFRAG:
case BTRFS_IOC_BALANCE:
break;
/* takes a signed int */
case BTRFS_IOC_BALANCE_CTL:
tprints(", ");
printxval(btrfs_balance_ctl_cmds, arg, "BTRFS_BALANCE_CTL_???");
break;
/* returns a 64 */
case BTRFS_IOC_START_SYNC: /* R */
if (entering(tcp))
return 0;
/* fall through */
/* takes a u64 */
case BTRFS_IOC_DEFAULT_SUBVOL: /* W */
case BTRFS_IOC_WAIT_SYNC: /* W */
tprints(", ");
printnum_int64(tcp, arg, "%" PRIu64);
break;
/* u64 but describe a flags bitfield; we can make that symbolic */
case BTRFS_IOC_SUBVOL_GETFLAGS: { /* R */
uint64_t flags;
if (entering(tcp))
return 0;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &flags))
break;
printflags64(btrfs_snap_flags_v2, flags, "BTRFS_SUBVOL_???");
break;
}
case BTRFS_IOC_SUBVOL_SETFLAGS: { /* W */
uint64_t flags;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &flags))
break;
printflags64(btrfs_snap_flags_v2, flags, "BTRFS_SUBVOL_???");
break;
}
/* More complex types */
case BTRFS_IOC_BALANCE_V2: /* RW */
if (entering(tcp)) {
tprints(", ");
btrfs_print_balance(tcp, arg, false);
return 0;
}
if (syserror(tcp))
break;
tprints(" => ");
btrfs_print_balance(tcp, arg, true);
break;
case BTRFS_IOC_BALANCE_PROGRESS: /* R */
if (entering(tcp))
return 0;
tprints(", ");
btrfs_print_balance(tcp, arg, true);
break;
case BTRFS_IOC_DEFRAG_RANGE: { /* W */
struct btrfs_ioctl_defrag_range_args args;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &args))
break;
tprintf("{start=%" PRIu64 ", len=", (uint64_t)args.start);
tprintf("%" PRIu64, (uint64_t) args.len);
if (args.len == UINT64_MAX)
tprints(" /* UINT64_MAX */");
tprints(", flags=");
printflags64(btrfs_defrag_flags, args.flags,
"BTRFS_DEFRAG_RANGE_???");
tprintf(", extent_thresh=%u, compress_type=",
args.extent_thresh);
printxval(btrfs_compress_types, args.compress_type,
"BTRFS_COMPRESS_???");
tprints("}");
break;
}
case BTRFS_IOC_DEV_INFO: { /* RW */
struct btrfs_ioctl_dev_info_args args;
char uuid[UUID_STRING_SIZE+1];
int valid;
if (entering(tcp))
tprints(", ");
else if (syserror(tcp))
break;
else
tprints(" => ");
if (umove_or_printaddr(tcp, arg, &args))
break;
tprints("{");
valid = btrfs_unparse_uuid(args.uuid, uuid);
if (entering(tcp)) {
tprintf("devid=%" PRI__u64, args.devid);
if (valid)
tprintf(", uuid=%s", uuid);
tprints("}");
return 0;
}
if (valid)
tprintf("uuid=%s, ", uuid);
tprintf("bytes_used=%" PRI__u64
", total_bytes=%" PRI__u64 ", path=",
args.bytes_used, args.total_bytes);
print_quoted_string((const char *)args.path, sizeof(args.path),
QUOTE_0_TERMINATED);
tprints("}");
break;
}
case BTRFS_IOC_DEV_REPLACE: { /* RW */
struct_btrfs_ioctl_dev_replace_args args;
if (entering(tcp))
tprints(", ");
else if (syserror(tcp))
break;
else
tprints(" => ");
if (umove_or_printaddr(tcp, arg, &args))
break;
if (entering(tcp)) {
tprints("{cmd=");
printxval64(btrfs_dev_replace_cmds, args.cmd,
"BTRFS_IOCTL_DEV_REPLACE_CMD_???");
if (args.cmd == BTRFS_IOCTL_DEV_REPLACE_CMD_START) {
const char *str;
tprintf(", start={srcdevid=%" PRIu64
", cont_reading_from_srcdev_mode=%" PRIu64
", srcdev_name=",
(uint64_t) args.start.srcdevid,
(uint64_t) args.start.cont_reading_from_srcdev_mode);
str = (const char*) args.start.srcdev_name;
print_quoted_string(str,
sizeof(args.start.srcdev_name),
QUOTE_0_TERMINATED);
tprints(", tgtdev_name=");
str = (const char*) args.start.tgtdev_name;
print_quoted_string(str,
sizeof(args.start.tgtdev_name),
QUOTE_0_TERMINATED);
tprints("}");
}
tprints("}");
return 0;
}
tprints("{result=");
printxval64(btrfs_dev_replace_results, args.result,
"BTRFS_IOCTL_DEV_REPLACE_RESULT_???");
if (args.cmd == BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS) {
char buf[sizeof("HH:MM:SS") + 1];
time_t time;
tprints(", ");
printxval64(btrfs_dev_replace_state,
args.status.replace_state,
"BTRFS_IOCTL_DEV_REPLACE_STATE_???");
tprintf(", progress_1000=%" PRIu64 " /* ",
(uint64_t) args.status.progress_1000);
if (args.status.progress_1000 <= 1000)
tprintf("%" PRIu64 ".%.2" PRIu64 "%%",
(uint64_t) args.status.progress_1000 / 10,
(uint64_t) args.status.progress_1000 % 10);
else
tprints("???");
tprints(" */ ,");
time = args.status.time_started;
strftime(buf, sizeof(buf), "%T",
localtime(&time));
tprintf("time_started=%" PRIu64" /* %s */, ",
(uint64_t) args.status.time_started, buf);
time = args.status.time_stopped;
strftime(buf, sizeof(buf), "%T",
localtime(&time));
tprintf("time_stopped=%" PRIu64" /* %s */, ",
(uint64_t) args.status.time_stopped, buf);
tprintf("num_write_errors=%" PRIu64
", num_uncorrectable_read_errors=%" PRIu64,
(uint64_t) args.status.num_write_errors,
(uint64_t) args.status.num_uncorrectable_read_errors);
}
tprints("}");
break;
}
case BTRFS_IOC_GET_FEATURES: { /* R */
struct btrfs_ioctl_feature_flags flags;
if (entering(tcp))
return 0;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &flags))
break;
btrfs_print_features(&flags);
break;
}
case BTRFS_IOC_SET_FEATURES: { /* W */
struct btrfs_ioctl_feature_flags flarg[2];
tprints(", ");
if (umove_or_printaddr(tcp, arg, &flarg))
break;
tprints("[");
btrfs_print_features(&flarg[0]);
tprints(", ");
btrfs_print_features(&flarg[1]);
tprints("]");
break;
}
case BTRFS_IOC_GET_SUPPORTED_FEATURES: { /* R */
struct btrfs_ioctl_feature_flags flarg[3];
if (entering(tcp))
return 0;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &flarg))
break;
tprints("[ /* supported */ ");
btrfs_print_features(&flarg[0]);
tprints(", /* safe to set */ ");
btrfs_print_features(&flarg[1]);
tprints(", /* safe to clear */ ");
btrfs_print_features(&flarg[2]);
tprints("]");
break;
}
case BTRFS_IOC_FS_INFO: { /* R */
struct btrfs_ioctl_fs_info_args args;
char uuid[UUID_STRING_SIZE+1];
uint32_t nodesize, sectorsize, clone_alignment;
#ifndef HAVE_STRUCT_BTRFS_IOCTL_FS_INFO_ARGS_NODESIZE
__u32 *reserved32;
#endif
if (entering(tcp))
return 0;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &args))
break;
#ifdef HAVE_STRUCT_BTRFS_IOCTL_FS_INFO_ARGS_NODESIZE
nodesize = args.nodesize,
sectorsize = args.sectorsize,
clone_alignment = args.clone_alignment;
#else
reserved32 = (__u32 *) (void *) args.reserved;
nodesize = reserved32[0];
sectorsize = reserved32[1];
clone_alignment = reserved32[2];
#endif
btrfs_unparse_uuid(args.fsid, uuid);
tprints("{");
tprintf("max_id=%" PRI__u64 ", num_devices=%" PRI__u64
", fsid=%s, nodesize=%u, sectorsize=%u"
", clone_alignment=%u",
args.max_id, args.num_devices, uuid,
nodesize, sectorsize, clone_alignment);
tprints("}");
break;
}
case BTRFS_IOC_GET_DEV_STATS: { /* RW */
struct btrfs_ioctl_get_dev_stats args;
uint64_t i;
if (entering(tcp))
tprints(", ");
else if (syserror(tcp))
break;
else
tprints(" => ");
if (umove_or_printaddr(tcp, arg, &args))
break;
tprints("{");
if (entering(tcp))
tprintf("devid=%" PRI__u64 ", ", args.devid);
tprintf("nr_items=%" PRI__u64 ", flags=", args.nr_items);
printflags64(btrfs_dev_stats_flags, args.flags,
"BTRFS_DEV_STATS_???");
if (entering(tcp)) {
tprints("}");
return 0;
}
/*
* The structure has a 1k limit; Let's make sure we don't
* go off into the middle of nowhere with a bad nr_items
* value.
*/
tprints(", [");
for (i = 0; i < args.nr_items; i++) {
if (i)
tprints(", ");
if (i >= ARRAY_SIZE(args.values)) {
tprints("...");
break;
}
const char *name = xlookup(btrfs_dev_stats_values, i);
if (name)
tprintf("/* %s */ ", name);
tprintf("%" PRI__u64, args.values[i]);
}
tprints("]}");
break;
}
case BTRFS_IOC_INO_LOOKUP: { /* RW */
struct btrfs_ioctl_ino_lookup_args args;
if (entering(tcp))
tprints(", ");
else if (syserror(tcp))
break;
else
tprints(" => ");
if (umove_or_printaddr(tcp, arg, &args))
break;
if (entering(tcp)) {
/* Use subvolume id of the containing root */
if (args.treeid == 0)
set_tcb_priv_ulong(tcp, 1);
tprints("{treeid=");
btrfs_print_objectid(args.treeid);
tprints(", objectid=");
btrfs_print_objectid(args.objectid);
tprints("}");
return 0;
}
tprints("{");
if (get_tcb_priv_ulong(tcp)) {
tprints("treeid=");
btrfs_print_objectid(args.treeid);
tprints(", ");
}
tprints("name=");
print_quoted_string(args.name, sizeof(args.name),
QUOTE_0_TERMINATED);
tprints("}");
break;
}
case BTRFS_IOC_INO_PATHS: { /* RW */
struct btrfs_ioctl_ino_path_args args;
if (entering(tcp))
tprints(", ");
else if (syserror(tcp))
break;
else
tprints(" => ");
if (umove_or_printaddr(tcp, arg, &args))
break;
tprints("{");
if (entering(tcp)) {
tprintf("inum=%" PRI__u64 ", size=%" PRI__u64,
args.inum, args.size);
tprintf(", fspath=0x%" PRI__x64 "}", args.fspath);
return 0;
}
tprints("fspath=");
btrfs_print_ino_path_container(tcp, args.fspath);
tprints("}");
break;
}
case BTRFS_IOC_LOGICAL_INO: { /* RW */
struct btrfs_ioctl_logical_ino_args args;
if (entering(tcp))
tprints(", ");
else if (syserror(tcp))
break;
else
tprints(" => ");
if (umove_or_printaddr(tcp, arg, &args))
break;
tprints("{");
if (entering(tcp)) {
tprintf("logical=%" PRI__u64 ", size=%" PRI__u64,
args.logical, args.size);
tprintf(", inodes=0x%" PRI__x64 "}", args.inodes);
return 0;
}
tprints("inodes=");
btrfs_print_logical_ino_container(tcp, args.inodes);
tprints("}");
break;
}
case BTRFS_IOC_QGROUP_ASSIGN: { /* W */
struct btrfs_ioctl_qgroup_assign_args args;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &args))
break;
tprintf("{assign=%" PRI__u64 ", src=%" PRI__u64
", dst=%" PRI__u64 "}",
args.assign, args.src, args.dst);
break;
}
case BTRFS_IOC_QGROUP_CREATE: { /* W */
struct btrfs_ioctl_qgroup_create_args args;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &args))
break;
tprintf("{create=%" PRI__u64 ", qgroupid=%" PRI__u64 "}",
args.create, args.qgroupid);