mirror of
https://github.com/systemd/systemd.git
synced 2024-12-22 17:35:35 +03:00
Avoid strict DM interface version dependencies (#5519)
Compiling against the dm-ioctl.h header as provided by the Linux kernel will embed the DM interface version number. Running an older kernel can result in an error like this on shutdown: Could not detach DM dm-11: ioctl mismatch, kernel(4.34.4), user(4.35.4) Work around this by shipping a local copy of dm-ioctl.h. We need at least the version from 3.13 for DM_DEFERRED_REMOVE [1], so bump the requirements in README accordingly. [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2c140a246dc0bc085b98eddde978060fcec1080c Fixes: #5492
This commit is contained in:
Michael Biebl
Lennart Poettering
parent
09c1102496
commit
dcce98a4bd
@ -1018,6 +1018,7 @@ libshared_la_SOURCES = \
|
||||
src/shared/gpt.h \
|
||||
src/shared/udev-util.h \
|
||||
src/shared/linux/auto_dev-ioctl.h \
|
||||
src/shared/linux-3.13/dm-ioctl.h \
|
||||
src/shared/initreq.h \
|
||||
src/shared/dns-domain.c \
|
||||
src/shared/dns-domain.h \
|
||||
|
||||
2
README
2
README
@ -35,7 +35,7 @@ LICENSE:
|
||||
- except src/udev/* which is (currently still) GPLv2, GPLv2+
|
||||
|
||||
REQUIREMENTS:
|
||||
Linux kernel >= 3.12
|
||||
Linux kernel >= 3.13
|
||||
Linux kernel >= 4.2 for unified cgroup hierarchy support
|
||||
|
||||
Kernel Config Options:
|
||||
|
||||
@ -19,7 +19,6 @@
|
||||
|
||||
#include <errno.h>
|
||||
#include <fcntl.h>
|
||||
#include <linux/dm-ioctl.h>
|
||||
#include <linux/loop.h>
|
||||
#include <string.h>
|
||||
#include <sys/mount.h>
|
||||
@ -31,6 +30,7 @@
|
||||
#include "escape.h"
|
||||
#include "fd-util.h"
|
||||
#include "fstab-util.h"
|
||||
#include "linux-3.13/dm-ioctl.h"
|
||||
#include "list.h"
|
||||
#include "mount-setup.h"
|
||||
#include "path-util.h"
|
||||
|
||||
@ -20,7 +20,6 @@
|
||||
#ifdef HAVE_LIBCRYPTSETUP
|
||||
#include <libcryptsetup.h>
|
||||
#endif
|
||||
#include <linux/dm-ioctl.h>
|
||||
#include <sys/mount.h>
|
||||
|
||||
#include "architecture.h"
|
||||
@ -32,6 +31,7 @@
|
||||
#include "fs-util.h"
|
||||
#include "gpt.h"
|
||||
#include "hexdecoct.h"
|
||||
#include "linux-3.13/dm-ioctl.h"
|
||||
#include "mount-util.h"
|
||||
#include "path-util.h"
|
||||
#include "stat-util.h"
|
||||
|
||||
355
src/shared/linux-3.13/dm-ioctl.h
Normal file
355
src/shared/linux-3.13/dm-ioctl.h
Normal file
@ -0,0 +1,355 @@
|
||||
/*
|
||||
* Copyright (C) 2001 - 2003 Sistina Software (UK) Limited.
|
||||
* Copyright (C) 2004 - 2009 Red Hat, Inc. All rights reserved.
|
||||
*
|
||||
* This file is released under the LGPL.
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_DM_IOCTL_V4_H
|
||||
#define _LINUX_DM_IOCTL_V4_H
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
#define DM_DIR "mapper" /* Slashes not supported */
|
||||
#define DM_CONTROL_NODE "control"
|
||||
#define DM_MAX_TYPE_NAME 16
|
||||
#define DM_NAME_LEN 128
|
||||
#define DM_UUID_LEN 129
|
||||
|
||||
/*
|
||||
* A traditional ioctl interface for the device mapper.
|
||||
*
|
||||
* Each device can have two tables associated with it, an
|
||||
* 'active' table which is the one currently used by io passing
|
||||
* through the device, and an 'inactive' one which is a table
|
||||
* that is being prepared as a replacement for the 'active' one.
|
||||
*
|
||||
* DM_VERSION:
|
||||
* Just get the version information for the ioctl interface.
|
||||
*
|
||||
* DM_REMOVE_ALL:
|
||||
* Remove all dm devices, destroy all tables. Only really used
|
||||
* for debug.
|
||||
*
|
||||
* DM_LIST_DEVICES:
|
||||
* Get a list of all the dm device names.
|
||||
*
|
||||
* DM_DEV_CREATE:
|
||||
* Create a new device, neither the 'active' or 'inactive' table
|
||||
* slots will be filled. The device will be in suspended state
|
||||
* after creation, however any io to the device will get errored
|
||||
* since it will be out-of-bounds.
|
||||
*
|
||||
* DM_DEV_REMOVE:
|
||||
* Remove a device, destroy any tables.
|
||||
*
|
||||
* DM_DEV_RENAME:
|
||||
* Rename a device or set its uuid if none was previously supplied.
|
||||
*
|
||||
* DM_SUSPEND:
|
||||
* This performs both suspend and resume, depending which flag is
|
||||
* passed in.
|
||||
* Suspend: This command will not return until all pending io to
|
||||
* the device has completed. Further io will be deferred until
|
||||
* the device is resumed.
|
||||
* Resume: It is no longer an error to issue this command on an
|
||||
* unsuspended device. If a table is present in the 'inactive'
|
||||
* slot, it will be moved to the active slot, then the old table
|
||||
* from the active slot will be _destroyed_. Finally the device
|
||||
* is resumed.
|
||||
*
|
||||
* DM_DEV_STATUS:
|
||||
* Retrieves the status for the table in the 'active' slot.
|
||||
*
|
||||
* DM_DEV_WAIT:
|
||||
* Wait for a significant event to occur to the device. This
|
||||
* could either be caused by an event triggered by one of the
|
||||
* targets of the table in the 'active' slot, or a table change.
|
||||
*
|
||||
* DM_TABLE_LOAD:
|
||||
* Load a table into the 'inactive' slot for the device. The
|
||||
* device does _not_ need to be suspended prior to this command.
|
||||
*
|
||||
* DM_TABLE_CLEAR:
|
||||
* Destroy any table in the 'inactive' slot (ie. abort).
|
||||
*
|
||||
* DM_TABLE_DEPS:
|
||||
* Return a set of device dependencies for the 'active' table.
|
||||
*
|
||||
* DM_TABLE_STATUS:
|
||||
* Return the targets status for the 'active' table.
|
||||
*
|
||||
* DM_TARGET_MSG:
|
||||
* Pass a message string to the target at a specific offset of a device.
|
||||
*
|
||||
* DM_DEV_SET_GEOMETRY:
|
||||
* Set the geometry of a device by passing in a string in this format:
|
||||
*
|
||||
* "cylinders heads sectors_per_track start_sector"
|
||||
*
|
||||
* Beware that CHS geometry is nearly obsolete and only provided
|
||||
* for compatibility with dm devices that can be booted by a PC
|
||||
* BIOS. See struct hd_geometry for range limits. Also note that
|
||||
* the geometry is erased if the device size changes.
|
||||
*/
|
||||
|
||||
/*
|
||||
* All ioctl arguments consist of a single chunk of memory, with
|
||||
* this structure at the start. If a uuid is specified any
|
||||
* lookup (eg. for a DM_INFO) will be done on that, *not* the
|
||||
* name.
|
||||
*/
|
||||
struct dm_ioctl {
|
||||
/*
|
||||
* The version number is made up of three parts:
|
||||
* major - no backward or forward compatibility,
|
||||
* minor - only backwards compatible,
|
||||
* patch - both backwards and forwards compatible.
|
||||
*
|
||||
* All clients of the ioctl interface should fill in the
|
||||
* version number of the interface that they were
|
||||
* compiled with.
|
||||
*
|
||||
* All recognised ioctl commands (ie. those that don't
|
||||
* return -ENOTTY) fill out this field, even if the
|
||||
* command failed.
|
||||
*/
|
||||
__u32 version[3]; /* in/out */
|
||||
__u32 data_size; /* total size of data passed in
|
||||
* including this struct */
|
||||
|
||||
__u32 data_start; /* offset to start of data
|
||||
* relative to start of this struct */
|
||||
|
||||
__u32 target_count; /* in/out */
|
||||
__s32 open_count; /* out */
|
||||
__u32 flags; /* in/out */
|
||||
|
||||
/*
|
||||
* event_nr holds either the event number (input and output) or the
|
||||
* udev cookie value (input only).
|
||||
* The DM_DEV_WAIT ioctl takes an event number as input.
|
||||
* The DM_SUSPEND, DM_DEV_REMOVE and DM_DEV_RENAME ioctls
|
||||
* use the field as a cookie to return in the DM_COOKIE
|
||||
* variable with the uevents they issue.
|
||||
* For output, the ioctls return the event number, not the cookie.
|
||||
*/
|
||||
__u32 event_nr; /* in/out */
|
||||
__u32 padding;
|
||||
|
||||
__u64 dev; /* in/out */
|
||||
|
||||
char name[DM_NAME_LEN]; /* device name */
|
||||
char uuid[DM_UUID_LEN]; /* unique identifier for
|
||||
* the block device */
|
||||
char data[7]; /* padding or data */
|
||||
};
|
||||
|
||||
/*
|
||||
* Used to specify tables. These structures appear after the
|
||||
* dm_ioctl.
|
||||
*/
|
||||
struct dm_target_spec {
|
||||
__u64 sector_start;
|
||||
__u64 length;
|
||||
__s32 status; /* used when reading from kernel only */
|
||||
|
||||
/*
|
||||
* Location of the next dm_target_spec.
|
||||
* - When specifying targets on a DM_TABLE_LOAD command, this value is
|
||||
* the number of bytes from the start of the "current" dm_target_spec
|
||||
* to the start of the "next" dm_target_spec.
|
||||
* - When retrieving targets on a DM_TABLE_STATUS command, this value
|
||||
* is the number of bytes from the start of the first dm_target_spec
|
||||
* (that follows the dm_ioctl struct) to the start of the "next"
|
||||
* dm_target_spec.
|
||||
*/
|
||||
__u32 next;
|
||||
|
||||
char target_type[DM_MAX_TYPE_NAME];
|
||||
|
||||
/*
|
||||
* Parameter string starts immediately after this object.
|
||||
* Be careful to add padding after string to ensure correct
|
||||
* alignment of subsequent dm_target_spec.
|
||||
*/
|
||||
};
|
||||
|
||||
/*
|
||||
* Used to retrieve the target dependencies.
|
||||
*/
|
||||
struct dm_target_deps {
|
||||
__u32 count; /* Array size */
|
||||
__u32 padding; /* unused */
|
||||
__u64 dev[0]; /* out */
|
||||
};
|
||||
|
||||
/*
|
||||
* Used to get a list of all dm devices.
|
||||
*/
|
||||
struct dm_name_list {
|
||||
__u64 dev;
|
||||
__u32 next; /* offset to the next record from
|
||||
the _start_ of this */
|
||||
char name[0];
|
||||
};
|
||||
|
||||
/*
|
||||
* Used to retrieve the target versions
|
||||
*/
|
||||
struct dm_target_versions {
|
||||
__u32 next;
|
||||
__u32 version[3];
|
||||
|
||||
char name[0];
|
||||
};
|
||||
|
||||
/*
|
||||
* Used to pass message to a target
|
||||
*/
|
||||
struct dm_target_msg {
|
||||
__u64 sector; /* Device sector */
|
||||
|
||||
char message[0];
|
||||
};
|
||||
|
||||
/*
|
||||
* If you change this make sure you make the corresponding change
|
||||
* to dm-ioctl.c:lookup_ioctl()
|
||||
*/
|
||||
enum {
|
||||
/* Top level cmds */
|
||||
DM_VERSION_CMD = 0,
|
||||
DM_REMOVE_ALL_CMD,
|
||||
DM_LIST_DEVICES_CMD,
|
||||
|
||||
/* device level cmds */
|
||||
DM_DEV_CREATE_CMD,
|
||||
DM_DEV_REMOVE_CMD,
|
||||
DM_DEV_RENAME_CMD,
|
||||
DM_DEV_SUSPEND_CMD,
|
||||
DM_DEV_STATUS_CMD,
|
||||
DM_DEV_WAIT_CMD,
|
||||
|
||||
/* Table level cmds */
|
||||
DM_TABLE_LOAD_CMD,
|
||||
DM_TABLE_CLEAR_CMD,
|
||||
DM_TABLE_DEPS_CMD,
|
||||
DM_TABLE_STATUS_CMD,
|
||||
|
||||
/* Added later */
|
||||
DM_LIST_VERSIONS_CMD,
|
||||
DM_TARGET_MSG_CMD,
|
||||
DM_DEV_SET_GEOMETRY_CMD
|
||||
};
|
||||
|
||||
#define DM_IOCTL 0xfd
|
||||
|
||||
#define DM_VERSION _IOWR(DM_IOCTL, DM_VERSION_CMD, struct dm_ioctl)
|
||||
#define DM_REMOVE_ALL _IOWR(DM_IOCTL, DM_REMOVE_ALL_CMD, struct dm_ioctl)
|
||||
#define DM_LIST_DEVICES _IOWR(DM_IOCTL, DM_LIST_DEVICES_CMD, struct dm_ioctl)
|
||||
|
||||
#define DM_DEV_CREATE _IOWR(DM_IOCTL, DM_DEV_CREATE_CMD, struct dm_ioctl)
|
||||
#define DM_DEV_REMOVE _IOWR(DM_IOCTL, DM_DEV_REMOVE_CMD, struct dm_ioctl)
|
||||
#define DM_DEV_RENAME _IOWR(DM_IOCTL, DM_DEV_RENAME_CMD, struct dm_ioctl)
|
||||
#define DM_DEV_SUSPEND _IOWR(DM_IOCTL, DM_DEV_SUSPEND_CMD, struct dm_ioctl)
|
||||
#define DM_DEV_STATUS _IOWR(DM_IOCTL, DM_DEV_STATUS_CMD, struct dm_ioctl)
|
||||
#define DM_DEV_WAIT _IOWR(DM_IOCTL, DM_DEV_WAIT_CMD, struct dm_ioctl)
|
||||
|
||||
#define DM_TABLE_LOAD _IOWR(DM_IOCTL, DM_TABLE_LOAD_CMD, struct dm_ioctl)
|
||||
#define DM_TABLE_CLEAR _IOWR(DM_IOCTL, DM_TABLE_CLEAR_CMD, struct dm_ioctl)
|
||||
#define DM_TABLE_DEPS _IOWR(DM_IOCTL, DM_TABLE_DEPS_CMD, struct dm_ioctl)
|
||||
#define DM_TABLE_STATUS _IOWR(DM_IOCTL, DM_TABLE_STATUS_CMD, struct dm_ioctl)
|
||||
|
||||
#define DM_LIST_VERSIONS _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, struct dm_ioctl)
|
||||
|
||||
#define DM_TARGET_MSG _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
|
||||
#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
|
||||
|
||||
#define DM_VERSION_MAJOR 4
|
||||
#define DM_VERSION_MINOR 27
|
||||
#define DM_VERSION_PATCHLEVEL 0
|
||||
#define DM_VERSION_EXTRA "-ioctl (2013-10-30)"
|
||||
|
||||
/* Status bits */
|
||||
#define DM_READONLY_FLAG (1 << 0) /* In/Out */
|
||||
#define DM_SUSPEND_FLAG (1 << 1) /* In/Out */
|
||||
#define DM_PERSISTENT_DEV_FLAG (1 << 3) /* In */
|
||||
|
||||
/*
|
||||
* Flag passed into ioctl STATUS command to get table information
|
||||
* rather than current status.
|
||||
*/
|
||||
#define DM_STATUS_TABLE_FLAG (1 << 4) /* In */
|
||||
|
||||
/*
|
||||
* Flags that indicate whether a table is present in either of
|
||||
* the two table slots that a device has.
|
||||
*/
|
||||
#define DM_ACTIVE_PRESENT_FLAG (1 << 5) /* Out */
|
||||
#define DM_INACTIVE_PRESENT_FLAG (1 << 6) /* Out */
|
||||
|
||||
/*
|
||||
* Indicates that the buffer passed in wasn't big enough for the
|
||||
* results.
|
||||
*/
|
||||
#define DM_BUFFER_FULL_FLAG (1 << 8) /* Out */
|
||||
|
||||
/*
|
||||
* This flag is now ignored.
|
||||
*/
|
||||
#define DM_SKIP_BDGET_FLAG (1 << 9) /* In */
|
||||
|
||||
/*
|
||||
* Set this to avoid attempting to freeze any filesystem when suspending.
|
||||
*/
|
||||
#define DM_SKIP_LOCKFS_FLAG (1 << 10) /* In */
|
||||
|
||||
/*
|
||||
* Set this to suspend without flushing queued ios.
|
||||
* Also disables flushing uncommitted changes in the thin target before
|
||||
* generating statistics for DM_TABLE_STATUS and DM_DEV_WAIT.
|
||||
*/
|
||||
#define DM_NOFLUSH_FLAG (1 << 11) /* In */
|
||||
|
||||
/*
|
||||
* If set, any table information returned will relate to the inactive
|
||||
* table instead of the live one. Always check DM_INACTIVE_PRESENT_FLAG
|
||||
* is set before using the data returned.
|
||||
*/
|
||||
#define DM_QUERY_INACTIVE_TABLE_FLAG (1 << 12) /* In */
|
||||
|
||||
/*
|
||||
* If set, a uevent was generated for which the caller may need to wait.
|
||||
*/
|
||||
#define DM_UEVENT_GENERATED_FLAG (1 << 13) /* Out */
|
||||
|
||||
/*
|
||||
* If set, rename changes the uuid not the name. Only permitted
|
||||
* if no uuid was previously supplied: an existing uuid cannot be changed.
|
||||
*/
|
||||
#define DM_UUID_FLAG (1 << 14) /* In */
|
||||
|
||||
/*
|
||||
* If set, all buffers are wiped after use. Use when sending
|
||||
* or requesting sensitive data such as an encryption key.
|
||||
*/
|
||||
#define DM_SECURE_DATA_FLAG (1 << 15) /* In */
|
||||
|
||||
/*
|
||||
* If set, a message generated output data.
|
||||
*/
|
||||
#define DM_DATA_OUT_FLAG (1 << 16) /* Out */
|
||||
|
||||
/*
|
||||
* If set with DM_DEV_REMOVE or DM_REMOVE_ALL this indicates that if
|
||||
* the device cannot be removed immediately because it is still in use
|
||||
* it should instead be scheduled for removal when it gets closed.
|
||||
*
|
||||
* On return from DM_DEV_REMOVE, DM_DEV_STATUS or other ioctls, this
|
||||
* flag indicates that the device is scheduled to be removed when it
|
||||
* gets closed.
|
||||
*/
|
||||
#define DM_DEFERRED_REMOVE (1 << 17) /* In/Out */
|
||||
|
||||
#endif /* _LINUX_DM_IOCTL_H */
|
||||
Loading…
Reference in New Issue
Block a user