linux-user: Add FITRIM ioctl

Tiny patch to add the missing FITRIM ioctl.

Signed-off-by: Michael Vogt <mvogt@redhat.com>
Message-Id: <20240403092048.16023-2-michael.vogt@gmail.com>
Signed-off-by: Ri

linux-user: Add FITRIM ioctl

Tiny patch to add the missing FITRIM ioctl.

Signed-off-by: Michael Vogt <mvogt@redhat.com>
Message-Id: <20240403092048.16023-2-michael.vogt@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

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linux-user: implement more loop ioctls

LOOP_CONFIGURE is now used by losetup, and it cannot cope with ENOSYS.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@viv

linux-user: implement more loop ioctls

LOOP_CONFIGURE is now used by losetup, and it cannot cope with ENOSYS.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvmtug4mbfx.fsf_-_@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for btrfs ioctls used to scrub a filesystem

This patch implements functionality for following ioctls:

BTRFS_IOC_SCRUB - Starting a btrfs filesystem scrub

Start a btrfs

linux-user: Add support for btrfs ioctls used to scrub a filesystem

This patch implements functionality for following ioctls:

BTRFS_IOC_SCRUB - Starting a btrfs filesystem scrub

Start a btrfs filesystem scrub. The third ioctls argument
is a pointer to a following type:

struct btrfs_ioctl_scrub_args {
__u64 devid; /* in */
__u64 start; /* in */
__u64 end; /* in */
__u64 flags; /* in */
struct btrfs_scrub_progress progress; /* out */
/* pad to 1k */
__u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
};

Before calling this ioctl, field 'devid' should be filled
with value that represents the device id of the btrfs filesystem
for which the scrub is to be started.

BTRFS_IOC_SCRUB_CANCEL - Canceling scrub of a btrfs filesystem

Cancel a btrfs filesystem scrub if it is running. The third
ioctls argument is ignored.

BTRFS_IOC_SCRUB_PROGRESS - Getting status of a running scrub

Read the status of a running btrfs filesystem scrub. The third
ioctls argument is a pointer to the above mentioned
'struct btrfs_ioctl_scrub_args'. Similarly as with 'BTRFS_IOC_SCRUB',
the 'devid' field should be filled with value that represents the
id of the btrfs device for which the scrub has started. The status
of a running scrub is returned in the field 'progress' which is
of type 'struct btrfs_scrub_progress' and its definition can be
found at:
https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/btrfs.h#L150

Implementation nots:

Ioctls in this patch use type 'struct btrfs_ioctl_scrub_args' as their
third argument. That is the reason why an aproppriate thunk type
definition is added in file 'syscall_types.h'.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200823195014.116226-9-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for btrfs ioctls used to manage quota

This patch implements functionality for following ioctls:

BTRFS_IOC_QUOTA_CTL - Enabling/Disabling quota support

Enable or disable

linux-user: Add support for btrfs ioctls used to manage quota

This patch implements functionality for following ioctls:

BTRFS_IOC_QUOTA_CTL - Enabling/Disabling quota support

Enable or disable quota support for a btrfs filesystem. Quota
support is enabled or disabled using the ioctls third argument
which represents a pointer to a following type:

struct btrfs_ioctl_quota_ctl_args {
__u64 cmd;
__u64 status;
};

Before calling this ioctl, the 'cmd' field should be filled
with one of the values 'BTRFS_QUOTA_CTL_ENABLE' (enabling quota)
'BTRFS_QUOTA_CTL_DISABLE' (disabling quota).

BTRFS_IOC_QGROUP_CREATE - Creating/Removing a subvolume quota group

Create or remove a subvolume quota group. The subvolume quota
group is created or removed using the ioctl's third argument which
represents a pointer to a following type:

struct btrfs_ioctl_qgroup_create_args {
__u64 create;
__u64 qgroupid;
};

Before calling this ioctl, the 'create' field should be filled
with the aproppriate value depending on if the user wants to
create or remove a quota group (0 for removing, everything else
for creating). Also, the 'qgroupid' field should be filled with
the value for the quota group id that is to be created.

BTRFS_IOC_QGROUP_ASSIGN - Asigning or removing a quota group as child group

Asign or remove a quota group as child quota group of another
group in the btrfs filesystem. The asignment is done using the
ioctl's third argument which represents a pointert to a following type:

struct btrfs_ioctl_qgroup_assign_args {
__u64 assign;
__u64 src;
__u64 dst;
};

Before calling this ioctl, the 'assign' field should be filled with
the aproppriate value depending on if the user wants to asign or remove
a quota group as a child quota group of another group (0 for removing,
everythin else for asigning). Also, the 'src' and 'dst' fields should
be filled with the aproppriate quota group id values depending on which
quota group needs to asigned or removed as child quota group of another
group ('src' gets asigned or removed as child group of 'dst').

BTRFS_IOC_QGROUP_LIMIT - Limiting the size of a quota group

Limit the size of a quota group. The size of the quota group is limited
with the ioctls third argument which represents a pointer to a following
type:

struct btrfs_ioctl_qgroup_limit_args {
__u64 qgroupid;
struct btrfs_qgroup_limit lim;
};

Before calling this ioctl, the 'qgroup' id field should be filled with
aproppriate value of the quota group id for which the size is to be
limited. The second field is of following type:

struct btrfs_qgroup_limit {
__u64 flags;
__u64 max_rfer;
__u64 max_excl;
__u64 rsv_rfer;
__u64 rsv_excl;
};

The 'max_rfer' field should be filled with the size to which the quota
group should be limited. The 'flags' field can be used for passing
additional options and can have values which can be found on:
https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/btrfs.h#L67

BTRFS_IOC_QUOTA_RESCAN_STATUS - Checking status of running rescan operation

Check status of a running rescan operation. The status is checked using
the ioctl's third argument which represents a pointer to a following type:

struct btrfs_ioctl_quota_rescan_args {
__u64 flags;
__u64 progress;
__u64 reserved[6];
};

If there is a rescan operation running, 'flags' field is set to 1, and
'progress' field is set to aproppriate value which represents the progress
of the operation.

BTRFS_IOC_QUOTA_RESCAN - Starting a rescan operation

Start ar rescan operation to Trash all quota groups and scan the metadata
again with the current config. Before calling this ioctl,
BTRFS_IOC_QUOTA_RESCAN_STATUS sould be run to check if there is already a
rescan operation runing. After that ioctl call, the received
'struct btrfs_ioctl_quota_rescan_args' should be than passed as this ioctls
third argument.

BTRFS_IOC_QUOTA_RESCAN_WAIT - Waiting for a rescan operation to finish

Wait until a rescan operation is finished (if there is a rescan operation
running). The third ioctls argument is ignored.

Implementation notes:

Almost all of the ioctls in this patch use structure types as third arguments.
That is the reason why aproppriate thunk definitions were added in file
'syscall_types.h'.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200823195014.116226-8-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for two btrfs ioctls used for subvolume

This patch implements functionality for following ioctl:

BTRFS_IOC_DEFAULT_SUBVOL - Setting a default subvolume

Set a default su

linux-user: Add support for two btrfs ioctls used for subvolume

This patch implements functionality for following ioctl:

BTRFS_IOC_DEFAULT_SUBVOL - Setting a default subvolume

Set a default subvolume for a btrfs filesystem. The third
ioctl's argument is a '__u64' (unsigned long long) which
represents the id of a subvolume that is to be set as
the default.

BTRFS_IOC_GET_SUBVOL_ROOTREF - Getting tree and directory id of subvolumes

Read tree and directory id of subvolumes from a btrfs
filesystem. The tree and directory id's are returned in the
ioctl's third argument which represents a pointer to a
following type:

struct btrfs_ioctl_get_subvol_rootref_args {
/* in/out, minimum id of rootref's treeid to be searched */
__u64 min_treeid;

/* out */
struct {
__u64 treeid;
__u64 dirid;
} rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM];

/* out, number of found items */
__u8 num_items;
__u8 align[7];
};

Before calling this ioctl, 'min_treeid' field should be filled
with value that represent the minimum value for the tree id.

Implementation notes:

Ioctl BTRFS_IOC_GET_SUBVOL_ROOTREF uses the above mentioned structure
type as third argument. That is the reason why a aproppriate thunk
structure definition is added in file 'syscall_types.h'.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200823195014.116226-7-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for a group of btrfs inode ioctls

This patch implements functionality of following ioctls:

BTRFS_IOC_INO_LOOKUP - Reading tree root id and path

Read tree root id and pa

linux-user: Add support for a group of btrfs inode ioctls

This patch implements functionality of following ioctls:

BTRFS_IOC_INO_LOOKUP - Reading tree root id and path

Read tree root id and path for a given file or directory.
The name and tree root id are returned in an ioctl's third
argument that represents a pointer to a following type:

struct btrfs_ioctl_ino_lookup_args {
__u64 treeid;
__u64 objectid;
char name[BTRFS_INO_LOOKUP_PATH_MAX];
};

Before calling this ioctl, field 'objectid' should be filled
with the object id value for which the tree id and path are
to be read. Value 'BTRFS_FIRST_FREE_OBJECTID' represents the
object id for the first available btrfs object (directory or
file).

BTRFS_IOC_INO_PATHS - Reading paths to all files

Read path to all files with a certain inode number. The paths
are returned in the ioctl's third argument which represents
a pointer to a following type:

struct btrfs_ioctl_ino_path_args {
__u64 inum; /* in */
__u64 size; /* in */
__u64 reserved[4];
/* struct btrfs_data_container *fspath; out */
__u64 fspath; /* out */
};

Before calling this ioctl, the 'inum' and 'size' field should
be filled with the aproppriate inode number and size of the
directory where file paths should be looked for. For now, the
paths are returned in an '__u64' (unsigned long long) value
'fspath'.

BTRFS_IOC_LOGICAL_INO - Reading inode numbers

Read inode numbers for files on a certain logical adress. The
inode numbers are returned in the ioctl's third argument which
represents a pointer to a following type:

struct btrfs_ioctl_logical_ino_args {
__u64 logical; /* in */
__u64 size; /* in */
__u64 reserved[3]; /* must be 0 for now */
__u64 flags; /* in, v2 only */
/* struct btrfs_data_container *inodes; out */
__u64 inodes;
};

Before calling this ioctl, the 'logical' and 'size' field should
be filled with the aproppriate logical adress and size of where
the inode numbers of files should be looked for. For now, the
inode numbers are returned in an '__u64' (unsigned long long)
value 'inodes'.

BTRFS_IOC_LOGICAL_INO_V2 - Reading inode numbers

Same as the above mentioned ioctl except that it allows passing
a flags 'BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET'.

BTRFS_IOC_INO_LOOKUP_USER - Reading subvolume name and path

Read name and path of a subvolume. The tree root id and
path are read in an ioctl's third argument which represents a
pointer to a following type:

struct btrfs_ioctl_ino_lookup_user_args {
/* in, inode number containing the subvolume of 'subvolid' */
__u64 dirid;
/* in */
__u64 treeid;
/* out, name of the subvolume of 'treeid' */
char name[BTRFS_VOL_NAME_MAX + 1];
/*
* out, constructed path from the directory with which the ioctl is
* called to dirid
*/
char path[BTRFS_INO_LOOKUP_USER_PATH_MAX];
};

Before calling this ioctl, the 'dirid' and 'treeid' field should
be filled with aproppriate values which represent the inode number
of the directory that contains the subvolume and treeid of the
subvolume.

Implementation notes:

All of the ioctls in this patch use structure types as third arguments.
That is the reason why aproppriate thunk definitions were added in file
'syscall_types.h'.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200823195014.116226-6-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for btrfs ioctls used to get/set features

This patch implements functionality for following ioctls:

BTRFS_IOC_GET_FEATURES - Getting feature flags

Read feature flags fo

linux-user: Add support for btrfs ioctls used to get/set features

This patch implements functionality for following ioctls:

BTRFS_IOC_GET_FEATURES - Getting feature flags

Read feature flags for a btrfs filesystem. The feature flags
are returned inside the ioctl's third argument which represents
a pointer to a following structure type:

struct btrfs_ioctl_feature_flags {
__u64 compat_flags;
__u64 compat_ro_flags;
__u64 incompat_flags;
};

All of the structure field represent bit masks that can be composed
of values which can be found on:
https://elixir.bootlin.com/linux/latest/source/fs/btrfs/ctree.h#L282

BTRFS_IOC_SET_FEATURES - Setting feature flags

Set and clear feature flags for a btrfs filesystem. The feature flags
are set using the ioctl's third argument which represents a
'struct btrfs_ioctl_feature_flags[2]' array. The first element of the
array represent flags which are to be cleared and the second element of
the array represent flags which are to be set. The second element has the
priority over the first, which means that if there are matching flags
in the elements, they will be set in the filesystem. If the flag values
in the third argument aren't correctly set to be composed of the available
predefined flag values, errno ENOPERM ("Operation not permitted") is returned.

BTRFS_IOC_GET_SUPPORTED_FEATURES - Getting supported feature flags

Read supported feature flags for a btrfs filesystem. The supported
feature flags are read using the ioctl's third argument which represents
a 'struct btrfs_ioctl_feature_flags[3]' array. The first element of this
array represents all of the supported flags in the btrfs filesystem.
The second element represents flags that can be safely set and third element
represent flags that can be safely clearead.

Implementation notes:

All of the implemented ioctls use 'struct btrfs_ioctl_feature_flags' as
third argument. That is the reason why a corresponding defintion was added
in file 'linux-user/syscall_types.h'.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200823195014.116226-5-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for btrfs ioctls used to manipulate with devices

This patch implements functionality for following ioctls:

BTRFS_IOC_SCAN_DEV - Scanning device for a btrfs filesystem

S

linux-user: Add support for btrfs ioctls used to manipulate with devices

This patch implements functionality for following ioctls:

BTRFS_IOC_SCAN_DEV - Scanning device for a btrfs filesystem

Scan a device for a btrfs filesystem. The device that is to
be scanned is passed in the ioctl's third argument which
represents a pointer to a 'struct ioc_vol_args' (which was
mentioned in a previous patch). Before calling this ioctl,
the name field of this structure should be filled with the
aproppriate name value which represents a path for the device.
If the device contains a btrfs filesystem, the ioctl returns 0,
otherwise a negative value is returned.

BTRFS_IOC_ADD_DEV - Adding a device to a btrfs filesystem

Add a device to a btrfs filesystem. The device that is to be
added is passed in the ioctl's third argument which represents
a pointer to a 'struct ioc_vol_args' (which was mentioned in
a previous patch). Before calling this ioctl, the name field of
this structure should be filled with the aproppriate name value
which represents a path for the device.

BTRFS_IOC_RM_DEV - Removing a device from a btrfs filesystem

Remove a device from a btrfs filesystem. The device that is to be
removed is passed in the ioctl's third argument which represents
a pointer to a 'struct ioc_vol_args' (which was mentioned in
a previous patch). Before calling this ioctl, the name field of
this structure should be filled with the aproppriate name value
which represents a path for the device.

BTRFS_IOC_DEV_INFO - Getting information about a device

Obtain information for device in a btrfs filesystem. The information
is gathered in the ioctl's third argument which represents a pointer
to a following structure type:

struct btrfs_ioctl_dev_info_args {
__u64 devid; /* in/out */
__u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
__u64 bytes_used; /* out */
__u64 total_bytes; /* out */
__u64 unused[379]; /* pad to 4k */
__u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
};

Before calling this ioctl, field "devid" should be set with the id value
for the device for which the information is to be obtained. If this field
is not aproppriately set, the errno ENODEV ("No such device") is returned.

BTRFS_IOC_GET_DEV_STATS - Getting device statistics

Obtain stats informatin for device in a btrfs filesystem. The information
is gathered in the ioctl's third argument which represents a pointer to
a following structure type:

struct btrfs_ioctl_get_dev_stats {
__u64 devid; /* in */
__u64 nr_items; /* in/out */
__u64 flags; /* in/out */

/* out values: */
__u64 values[BTRFS_DEV_STAT_VALUES_MAX];

/*
* This pads the struct to 1032 bytes. It was originally meant to pad to
* 1024 bytes, but when adding the flags field, the padding calculation
* was not adjusted.
*/
__u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX];
};

Before calling this ioctl, field "devid" should be set with the id value
for the device for which the information is to be obtained. If this field
is not aproppriately set, the errno ENODEV ("No such device") is returned.

BTRFS_IOC_FORGET_DEV - Remove unmounted devices

Search and remove all stale devices (devices which are not mounted).
The third ioctl argument is a pointer to a 'struct btrfs_ioctl_vol_args'.
The ioctl call will release all unmounted devices which match the path
which is specified in the "name" field of the structure. If an empty
path ("") is specified, all unmounted devices will be released.

Implementation notes:

Ioctls BTRFS_IOC_DEV_INFO and BTRFS_IOC_GET_DEV_STATS use types
'struct btrfs_ioctl_dev_info_args' and ' struct btrfs_ioctl_get_dev_stats'
as third argument types. That is the reason why corresponding structure
definitions were added in file 'linux-user/syscall_types.h'.
Since the thunk type for 'struct ioc_vol_args' was already added in a
previous patch, the rest of the implementation was straightforward.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200823195014.116226-4-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for a group of btrfs ioctls used for snapshots

This patch implements functionality for following ioctls:

BTRFS_IOC_SNAP_CREATE - Creating a subvolume snapshot

Create a

linux-user: Add support for a group of btrfs ioctls used for snapshots

This patch implements functionality for following ioctls:

BTRFS_IOC_SNAP_CREATE - Creating a subvolume snapshot

Create a snapshot of a btrfs subvolume. The snapshot is created using the
ioctl's third argument that is a pointer to a 'struct btrfs_ioctl_vol_args'
(which was mentioned in the previous patch). Before calling this ioctl,
the fields of the structure should be filled with aproppriate values for
the file descriptor and path of the subvolume for which the snapshot is to
be created.

BTRFS_IOC_SNAP_DESTROY - Removing a subvolume snapshot

Delete a snapshot of a btrfs subvolume. The snapshot is deleted using the
ioctl's third argument that is a pointer to a 'struct btrfs_ioctl_vol_args'
(which was mentioned in the previous patch). Before calling this ioctl,
the fields of the structure should be filled with aproppriate values for
the file descriptor and path of the subvolume for which the snapshot is to
be deleted.

Implementation notes:

Since the thunk type 'struct btrfs_ioctl_vol_args' is defined in the
previous patch, the implementation for these ioctls was straightforward.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200823195014.116226-3-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

show more ...

linux-user: Add support for a group of btrfs ioctls used for subvolumes

This patch implements functionality of following ioctls:

BTRFS_IOC_SUBVOL_CREATE - Creating a btrfs subvolume

Create a b

linux-user: Add support for a group of btrfs ioctls used for subvolumes

This patch implements functionality of following ioctls:

BTRFS_IOC_SUBVOL_CREATE - Creating a btrfs subvolume

Create a btrfs subvolume. The subvolume is created using the ioctl's
third argument which represents a pointer to a following structure
type:

struct btrfs_ioctl_vol_args {
__s64 fd;
char name[BTRFS_PATH_NAME_MAX + 1];
};

Before calling this ioctl, the fields of this structure should be filled
with aproppriate values. The fd field represents the file descriptor
value of the subvolume and the name field represents the subvolume
path.

BTRFS_IOC_SUBVOL_GETFLAGS - Getting subvolume flags

Read the flags of the btrfs subvolume. The flags are read using
the ioctl's third argument that is a pointer of __u64 (unsigned long).
The third argument represents a bit mask that can be composed of following
values:
BTRFS_SUBVOL_RDONLY (1ULL << 1)
BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3)
BTRFS_SUBVOL_SPEC_BY_ID (1ULL << 4)

BTRFS_IOC_SUBVOL_SETFLAGS - Setting subvolume flags

Set the flags of the btrfs subvolume. The flags are set using the
ioctl's third argument that is a pointer of __u64 (unsigned long).
The third argument represents a bit mask that can be composed of same
values as in the case of previous ioctl (BTRFS_IOC_SUBVOL_GETFLAGS).

BTRFS_IOC_SUBVOL_GETINFO - Getting subvolume information

Read information about the subvolume. The subvolume information is
returned in the ioctl's third argument which represents a pointer to
a following structure type:

struct btrfs_ioctl_get_subvol_info_args {
/* Id of this subvolume */
__u64 treeid;

/* Name of this subvolume, used to get the real name at mount point */
char name[BTRFS_VOL_NAME_MAX + 1];

/*
* Id of the subvolume which contains this subvolume.
* Zero for top-level subvolume or a deleted subvolume.
*/
__u64 parent_id;

/*
* Inode number of the directory which contains this subvolume.
* Zero for top-level subvolume or a deleted subvolume
*/
__u64 dirid;

/* Latest transaction id of this subvolume */
__u64 generation;

/* Flags of this subvolume */
__u64 flags;

/* UUID of this subvolume */
__u8 uuid[BTRFS_UUID_SIZE];

/*
* UUID of the subvolume of which this subvolume is a snapshot.
* All zero for a non-snapshot subvolume.
*/
__u8 parent_uuid[BTRFS_UUID_SIZE];

/*
* UUID of the subvolume from which this subvolume was received.
* All zero for non-received subvolume.
*/
__u8 received_uuid[BTRFS_UUID_SIZE];

/* Transaction id indicating when change/create/send/receive happened */
__u64 ctransid;
__u64 otransid;
__u64 stransid;
__u64 rtransid;
/* Time corresponding to c/o/s/rtransid */
struct btrfs_ioctl_timespec ctime;
struct btrfs_ioctl_timespec otime;
struct btrfs_ioctl_timespec stime;
struct btrfs_ioctl_timespec rtime;

/* Must be zero */
__u64 reserved[8];
};

All of the fields of this structure are filled after the ioctl call.

Implementation notes:

Ioctls BTRFS_IOC_SUBVOL_CREATE and BTRFS_IOC_SUBVOL_GETINFO have structure
types as third arguments. That is the reason why a corresponding definition
are added in file 'linux-user/syscall_types.h'.

The line '#include <linux/btrfs.h>' is added in file 'linux-user/syscall.c' to
recognise preprocessor definitions for these ioctls. Since the file "linux/btrfs.h"
was added in the kernel version 3.9, it is enwrapped in an #ifdef statement
with parameter CONFIG_BTRFS which is defined in 'configure' if the
header file is present.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200823195014.116226-2-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: syscall: ioctls: support DRM_IOCTL_I915_GETPARAM

Another DRM_IOCTL_I915 patches will be sent next.

Signed-off-by: Chen Gang <chengang@emindsoft.com.cn>
Reviewed-by: Laurent Vivier <laur

linux-user: syscall: ioctls: support DRM_IOCTL_I915_GETPARAM

Another DRM_IOCTL_I915 patches will be sent next.

Signed-off-by: Chen Gang <chengang@emindsoft.com.cn>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200802133938.12055-1-chengang@emindsoft.com.cn>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add thunk argument types for SIOCGSTAMP and SIOCGSTAMPNS

Socket ioctls SIOCGSTAMP and SIOCGSTAMPNS, used for timestamping the socket
connection, are defined in file "ioctls.h" differentl

linux-user: Add thunk argument types for SIOCGSTAMP and SIOCGSTAMPNS

Socket ioctls SIOCGSTAMP and SIOCGSTAMPNS, used for timestamping the socket
connection, are defined in file "ioctls.h" differently from other ioctls.
The reason for this difference is explained in the comments above their definition.
These ioctls didn't have defined thunk argument types before changes from this
patch. They have special handling functions ("do_ioctl_SIOCGSTAMP" and
"do_ioctl_SIOCGSTAMPNS") that take care of setting values for approppriate argument
types (struct timeval and struct timespec) and thus no thunk argument types were
needed for their implementation. But this patch adds those argument type definitions
in file "syscall_types.h" and "ioctls.h" as it is needed for printing arguments
of these ioctls with strace.

Implementation notes:

There are two variants of these ioctls: SIOCGSTAMP_OLD/SIOCGSTAM_NEW and
SIOCGSTAMPNS_OLD/SIOCGSTAMPNS_NEW. One is the old existing definition and the
other is the 2038 safe variant used for 32-bit architectures. Corresponding
structure definitions STRUCT_timespec/STRUCT__kernel_timespec and
STRUCT_timeval/STRUCT__kernel_sock_timeval were added for these variants.
STRUCT_timeval definition was already inside the file as it is used by
another implemented ioctl. Two cases were added for definitions
STRUCT_timeval/STRUCT__kernel_sock_timeval to manage the case when the
"u_sec" field of the timeval structure is of type int.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200619124727.18080-2-filip.bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: syscall: ioctls: support DRM_IOCTL_VERSION

Another DRM_IOCTL_* commands will be done later.

Signed-off-by: Chen Gang <chengang@emindsoft.com.cn>
Reviewed-by: Laurent Vivier <laurent@viv

linux-user: syscall: ioctls: support DRM_IOCTL_VERSION

Another DRM_IOCTL_* commands will be done later.

Signed-off-by: Chen Gang <chengang@emindsoft.com.cn>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200605013221.22828-1-chengang@emindsoft.com.cn>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for getting/setting selected alsa timer parameters using ioctls

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_INFO - Getting information about

linux-user: Add support for getting/setting selected alsa timer parameters using ioctls

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_INFO - Getting information about selected timer

Read information about the selected timer. The information is returned in
the following structure:

struct snd_timer_info {
unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
int card; /* card number */
unsigned char id[64]; /* timer identificator */
unsigned char name[80]; /* timer name */
unsigned long reserved0; /* reserved for future use */
unsigned long resolution; /* average period resolution in ns */
unsigned char reserved[64]; /* reserved for future use */
};

A pointer to this structure should be passed as the third ioctl's argument.
Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT" should be
called first to select the timer which information is to be obtained. If no
timer is selected, the error EBADFD ("File descriptor in bad shape") is
returned.

SNDRV_TIMER_IOCTL_PARAMS - Setting parameters for selected timer

Sets parameters for the selected timer. The paramaters are set in the
following structure:

struct snd_timer_params {
unsigned int flags; /* flags - SNDRV_TIMER_PSFLG_* */
unsigned int ticks; /* requested resolution in ticks */
unsigned int queue_size; /* total size of queue (32-1024) */
unsigned int reserved0; /* reserved, was: failure locations */
unsigned int filter; /* event filter */
unsigned char reserved[60]; /* reserved */
};

A pointer to this structure should be passed as the third ioctl's argument.
Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT" should be
called first to select the timer which parameters are to be set. If no
timer is selected, the error EBADFD ("File descriptor in bad shape") is
returned.

SNDRV_TIMER_IOCTL_STATUS - Getting status of selected timer

Read status of the selected timer. The status of the timer is returned in
the following structure:

struct snd_timer_status {
struct timespec tstamp; /* Timestamp - last update */
unsigned int resolution; /* current period resolution in ns */
unsigned int lost; /* counter of master tick lost */
unsigned int overrun; /* count of read queue overruns */
unsigned int queue; /* used queue size */
unsigned char reserved[64]; /* reserved */
};

A pointer to this structure should be passed as the third ioctl's argument.
Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT" should be
called first to select the timer which status is to be obtained. If no
timer is selected, the error EBADFD ("File descriptor in bad shape") is
returned.

Implementation notes:

All ioctls in this patch have pointer to some kind of a structure
as their third argument. That is the reason why corresponding
definitions were added in 'linux-user/syscall_types.h'. Structure
'snd_timer_status' has field of type 'struct timespec' which is why
a corresponding definition of that structure was also added in
'linux-user/syscall_types.h'. All of these strucutures have some
fields that are of type 'unsigned long'. That is the reason why
separate target structures were defined in 'linux-user/syscall_defs.h'.
Structure 'struct timespec' already had a separate target definition
so that definition was used to define a target structure for
'snd_timer_status'. The rest of the implementation was straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-12-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for selecting alsa timer using ioctl

This patch implements functionality of following ioctl:

SNDRV_TIMER_IOCTL_SELECT - Selecting timer

Selects the timer which id is sp

linux-user: Add support for selecting alsa timer using ioctl

This patch implements functionality of following ioctl:

SNDRV_TIMER_IOCTL_SELECT - Selecting timer

Selects the timer which id is specified. The timer id is specified in the
following strcuture:

struct snd_timer_select {
struct snd_timer_id id; /* timer ID */
unsigned char reserved[32]; /* reserved */
};

A pointer to this structure should be passed as the third ioctl's argument.
Before calling the ioctl, the field "tid" should be initialized with the id
information for the timer which is to be selected. If there is no timer
device with the specified id, the error ENODEV ("No such device") is
returned.

Implementation notes:

Ioctl implemented in this patch has a pointer to a
'struct snd_timer_select' as its third argument.
That is the reason why a corresponding definition
was added in 'linux-user/syscall_types.h'. The rest
of the implementation was straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-11-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for getting/setting specified alsa timer parameters using ioctls

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_GINFO - Getting information abo

linux-user: Add support for getting/setting specified alsa timer parameters using ioctls

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_GINFO - Getting information about specified timer

Read information about the specified timer. The information about the
timer is returned in the following structure:

struct snd_timer_ginfo {
struct snd_timer_id tid; /* requested timer ID */
unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
int card; /* card number */
unsigned char id[64]; /* timer identification */
unsigned char name[80]; /* timer name */
unsigned long reserved0; /* reserved for future use */
unsigned long resolution; /* average period resolution in ns */
unsigned long resolution_min; /* minimal period resolution in ns */
unsigned long resolution_max; /* maximal period resolution in ns */
unsigned int clients; /* active timer clients */
unsigned char reserved[32]; /* reserved */
};

A pointer to this structure should be passed as the third ioctl's argument.
Before calling the ioctl, the field "tid" should be initialized with the id
information for the timer which information is to be obtained. After the
ioctl call, the rest of the structure fields are filled with values from
the timer device with the specified id. If there is no device with the
specified id, the error ENODEV ("No such device") is returned.

SNDRV_TIMER_IOCTL_GPARAMS - Setting precise period duration

Sets timer precise period duration numerator and denominator in seconds. The
period duration is set in the following structure:

struct snd_timer_gparams {
struct snd_timer_id tid; /* requested timer ID */
unsigned long period_num; /* period duration - numerator */
unsigned long period_den; /* period duration - denominator */
unsigned char reserved[32]; /* reserved */
};

A pointer to this structure should be passed as the third ioctl's argument.
Before calling the ioctl, the field "tid" should be initialized with the id
information for the timer which period duration is to be set. Also, the
fileds "period_num" and "period_den" should be filled with the period
duration numerator and denominator values that are to be set respectively.
If there is no device with the specified id, the error ENODEV ("No such
device") is returned.

SNDRV_TIMER_IOCTL_GSTATUS - Getting current period resolution

Read timer current period resolution in nanoseconds and period resolution
numerator and denominator in seconds. The period resolution information is
returned in the following structure:

struct snd_timer_gstatus {
struct snd_timer_id tid; /* requested timer ID */
unsigned long resolution; /* current period resolution in ns */
unsigned long resolution_num; /* period resolution - numerator */
unsigned long resolution_den; /* period resolution - denominator */
unsigned char reserved[32]; /* reserved for future use */
};

A pointer to this structure should be passed as the third ioctl's argument.
Before calling the ioctl, the field "tid" should be initialized with the id
information for the timer which period resolution is to be obtained. After
the ioctl call, the rest of the structure fields are filled with values
from the timer device with the specified id. If there is no device with the
specified id, the error ENODEV ("No such device") is returned.

Implementation notes:

All ioctls in this patch have pointer to some kind of a structure as their
third argument. That is the reason why corresponding definitions were added
in 'linux-user/syscall_types.h'. All of these strcutures have some fields
that are of type 'unsigned long'. That is the reason why separate target
structures were defined in 'linux-user/syscall_defs.h'. Also, all of the
structures have a field with type 'struct snd_timer_id' which is the reason
why a separate target structure 'struct target_snd_timer_id' was also
defined. The rest of the implementation was straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-10-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for getting alsa timer version and id

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_PVERSION - Getting the sound timer version

Read the s

linux-user: Add support for getting alsa timer version and id

This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_PVERSION - Getting the sound timer version

Read the sound timer version. The third ioctl's argument is
a pointer to an int in which the specified timers version
is returned.

SNDRV_TIMER_IOCTL_NEXT_DEVICE - Getting id information about next timer

Read id information about the next timer device from the sound timer
device list. The id infomration is returned in the following structure:

struct snd_timer_id {
int dev_class; /* timer device class number */
int dev_sclass; /* slave device class number (unused) */
int card; /* card number */
int device; /* device number */
int subdevice; /* sub-device number */
};

The devices in the sound timer device list are arranged by the fields
of this structure respectively (first by dev_class number, then by
card number, ...). A pointer to this structure should be passed as
the third ioctl's argument. Before calling the ioctl, the parameters
of this structure should be initialized in relation to the next timer
device which information is to be obtained. For example, if a wanted
timer device has the device class number equal to or bigger then 2,
the field dev_class should be initialized to 2. After the ioctl call,
the structure fields are filled with values from the next device in
the sound timer device list. If there is no next device in the list,
the structure is filled with "zero" id values (in that case all
fields are filled with value -1).

Implementation notes:

The ioctl 'SNDRV_TIMER_IOCTL_NEXT_DEVICE' has a pointer to a
'struct snd_timer_id' as its third argument. That is the reason why
corresponding definition is added in 'linux-user/syscall_types.h'.
Since all elements of this structure are of type 'int', the rest of
the implementation was straightforward.

The line '#include <linux/rtc.h>' was added to recognize
preprocessor definitions for these ioctls. This needs to be
done only once in this series of commits. Also, the content
of this file (with respect to ioctl definitions) remained
unchanged for a long time, therefore there is no need to
worry about supporting older Linux kernel version.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-8-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for getting/setting RTC PLL correction using ioctls

This patch implements functionalities of following ioctls:

RTC_PLL_GET - Getting PLL correction

Read the PLL correct

linux-user: Add support for getting/setting RTC PLL correction using ioctls

This patch implements functionalities of following ioctls:

RTC_PLL_GET - Getting PLL correction

Read the PLL correction for RTCs that support PLL. The PLL correction
is returned in the following structure:

struct rtc_pll_info {
int pll_ctrl; /* placeholder for fancier control */
int pll_value; /* get/set correction value */
int pll_max; /* max +ve (faster) adjustment value */
int pll_min; /* max -ve (slower) adjustment value */
int pll_posmult; /* factor for +ve correction */
int pll_negmult; /* factor for -ve correction */
long pll_clock; /* base PLL frequency */
};

A pointer to this structure should be passed as the third
ioctl's argument.

RTC_PLL_SET - Setting PLL correction

Sets the PLL correction for RTCs that support PLL. The PLL correction
that is set is specified by the rtc_pll_info structure pointed to by
the third ioctl's' argument.

Implementation notes:

All ioctls in this patch have a pointer to a structure rtc_pll_info
as their third argument. All elements of this structure are of
type 'int', except the last one that is of type 'long'. That is
the reason why a separate target structure (target_rtc_pll_info)
is defined in linux-user/syscall_defs. The rest of the
implementation is straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-6-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for getting/setting RTC wakeup alarm using ioctls

This patch implements functionalities of following ioctls:

RTC_WKALM_SET, RTC_WKALM_GET - Getting/Setting wakeup alarm

linux-user: Add support for getting/setting RTC wakeup alarm using ioctls

This patch implements functionalities of following ioctls:

RTC_WKALM_SET, RTC_WKALM_GET - Getting/Setting wakeup alarm

Some RTCs support a more powerful alarm interface, using these
ioctls to read or write the RTC's alarm time (respectively)
with this structure:

struct rtc_wkalrm {
unsigned char enabled;
unsigned char pending;
struct rtc_time time;
};

The enabled flag is used to enable or disable the alarm
interrupt, or to read its current status; when using these
calls, RTC_AIE_ON and RTC_AIE_OFF are not used. The pending
flag is used by RTC_WKALM_RD to report a pending interrupt
(so it's mostly useless on Linux, except when talking to the
RTC managed by EFI firmware). The time field is as used with
RTC_ALM_READ and RTC_ALM_SET except that the tm_mday, tm_mon,
and tm_year fields are also valid. A pointer to this structure
should be passed as the third ioctl's argument.

Implementation notes:

All ioctls in this patch have a pointer to a structure
rtc_wkalrm as their third argument. That is the reason why
corresponding definition is added in linux-user/syscall_types.h.
Since all elements of this structure are either of type
'unsigned char' or 'struct rtc_time' (that was covered in one
of previous patches), the rest of the implementation is
straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-5-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for getting/setting RTC time and alarm using ioctls

This patch implements functionalities of following ioctls:

RTC_RD_TIME - Getting RTC time

Returns this RTC's time in

linux-user: Add support for getting/setting RTC time and alarm using ioctls

This patch implements functionalities of following ioctls:

RTC_RD_TIME - Getting RTC time

Returns this RTC's time in the following structure:

struct rtc_time {
int tm_sec;
int tm_min;
int tm_hour;
int tm_mday;
int tm_mon;
int tm_year;
int tm_wday; /* unused */
int tm_yday; /* unused */
int tm_isdst; /* unused */
};

The fields in this structure have the same meaning and ranges
as the tm structure described in gmtime man page. A pointer
to this structure should be passed as the third ioctl's argument.

RTC_SET_TIME - Setting RTC time

Sets this RTC's time to the time specified by the rtc_time
structure pointed to by the third ioctl's argument. To set
the RTC's time the process must be privileged (i.e., have the
CAP_SYS_TIME capability).

RTC_ALM_READ, RTC_ALM_SET - Getting/Setting alarm time

Read and set the alarm time, for RTCs that support alarms.
The alarm interrupt must be separately enabled or disabled
using the RTC_AIE_ON, RTC_AIE_OFF requests. The third
ioctl's argument is a pointer to a rtc_time structure. Only
the tm_sec, tm_min, and tm_hour fields of this structure are
used.

Implementation notes:

All ioctls in this patch have pointer to a structure rtc_time
as their third argument. That is the reason why corresponding
definition is added in linux-user/syscall_types.h. Since all
elements of this structure are of type 'int', the rest of the
implementation is straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-3-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for FDFMT<BEG|TRK|END> ioctls

FDFMTBEG, FDFMTTRK, and FDFMTEND ioctls provide means for controlling
formatting of a floppy drive.

FDFMTTRK's third agrument is a pointer to t

linux-user: Add support for FDFMT<BEG|TRK|END> ioctls

FDFMTBEG, FDFMTTRK, and FDFMTEND ioctls provide means for controlling
formatting of a floppy drive.

FDFMTTRK's third agrument is a pointer to the structure:

struct format_descr {
unsigned int device,head,track;
};

defined in Linux kernel header <linux/fd.h>.

Since all fields of the structure are of type 'unsigned int', there is
no need to define "target_format_descr".

FDFMTBEG and FDFMTEND ioctls do not use the third argument.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-9-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Add support for FD<SETEMSGTRESH|SETMAXERRS|GETMAXERRS> ioctls

FDSETEMSGTRESH, FDSETMAXERRS, and FDGETMAXERRS ioctls are commands
for controlling error reporting of a floppy drive.

FDSET

linux-user: Add support for FD<SETEMSGTRESH|SETMAXERRS|GETMAXERRS> ioctls

FDSETEMSGTRESH, FDSETMAXERRS, and FDGETMAXERRS ioctls are commands
for controlling error reporting of a floppy drive.

FDSETEMSGTRESH's third agrument is a pointer to the structure:

struct floppy_max_errors {
unsigned int
abort, /* number of errors to be reached before aborting */
read_track, /* maximal number of errors permitted to read an
* entire track at once */
reset, /* maximal number of errors before a reset is tried */
recal, /* maximal number of errors before a recalibrate is
* tried */
/*
* Threshold for reporting FDC errors to the console.
* Setting this to zero may flood your screen when using
* ultra cheap floppies ;-)
*/
reporting;
};

defined in Linux kernel header <linux/fd.h>.

Since all fields of the structure are of type 'unsigned int', there is
no need to define "target_floppy_max_errors".

FDSETMAXERRS and FDGETMAXERRS ioctls do not use the third argument.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-8-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: fix to handle variably sized SIOCGSTAMP with new kernels

The SIOCGSTAMP symbol was previously defined in the
asm-generic/sockios.h header file. QEMU sees that header
indirectly via sys/s

linux-user: fix to handle variably sized SIOCGSTAMP with new kernels

The SIOCGSTAMP symbol was previously defined in the
asm-generic/sockios.h header file. QEMU sees that header
indirectly via sys/socket.h

In linux kernel commit 0768e17073dc527ccd18ed5f96ce85f9985e9115
the asm-generic/sockios.h header no longer defines SIOCGSTAMP.
Instead it provides only SIOCGSTAMP_OLD, which only uses a
32-bit time_t on 32-bit architectures.

The linux/sockios.h header then defines SIOCGSTAMP using
either SIOCGSTAMP_OLD or SIOCGSTAMP_NEW as appropriate. If
SIOCGSTAMP_NEW is used, then the tv_sec field is 64-bit even
on 32-bit architectures

To cope with this we must now convert the old and new type from
the target to the host one.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Message-Id: <20190718130641.15294-1-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Implement special usbfs ioctls.

Userspace submits a USB Request Buffer to the kernel, optionally
discards it, and finally reaps the URB. Thunk buffers from target
to host and back.

Tes

linux-user: Implement special usbfs ioctls.

Userspace submits a USB Request Buffer to the kernel, optionally
discards it, and finally reaps the URB. Thunk buffers from target
to host and back.

Tested by running an i386 scanner driver on ARMv7 and by running
the PowerPC lsusb utility on x86_64. The discardurb ioctl is
not exercised in these tests.

Signed-off-by: Cortland Tölva <cst@tolva.net>
Message-Id: <20181008163521.17341-4-cst@tolva.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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linux-user: Define ordinary usbfs ioctls.

Provide ioctl definitions for the generic thunk mechanism to
convert most usbfs calls. Calculate arg size at runtime.

Signed-off-by: Cortland Tölva <cst@t

linux-user: Define ordinary usbfs ioctls.

Provide ioctl definitions for the generic thunk mechanism to
convert most usbfs calls. Calculate arg size at runtime.

Signed-off-by: Cortland Tölva <cst@tolva.net>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20181008163521.17341-3-cst@tolva.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

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