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106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
package devmapper // import "github.com/docker/docker/daemon/graphdriver/devmapper"
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// Definition of struct dm_task and sub structures (from lvm2)
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//
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// struct dm_ioctl {
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// /*
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// * The version number is made up of three parts:
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// * major - no backward or forward compatibility,
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// * minor - only backwards compatible,
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// * patch - both backwards and forwards compatible.
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// *
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// * All clients of the ioctl interface should fill in the
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// * version number of the interface that they were
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// * compiled with.
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// *
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// * All recognized ioctl commands (ie. those that don't
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// * return -ENOTTY) fill out this field, even if the
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// * command failed.
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// */
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// uint32_t version[3]; /* in/out */
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// uint32_t data_size; /* total size of data passed in
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// * including this struct */
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// uint32_t data_start; /* offset to start of data
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// * relative to start of this struct */
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// uint32_t target_count; /* in/out */
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// int32_t open_count; /* out */
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// uint32_t flags; /* in/out */
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// /*
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// * event_nr holds either the event number (input and output) or the
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// * udev cookie value (input only).
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// * The DM_DEV_WAIT ioctl takes an event number as input.
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// * The DM_SUSPEND, DM_DEV_REMOVE and DM_DEV_RENAME ioctls
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// * use the field as a cookie to return in the DM_COOKIE
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// * variable with the uevents they issue.
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// * For output, the ioctls return the event number, not the cookie.
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// */
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// uint32_t event_nr; /* in/out */
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// uint32_t padding;
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// uint64_t dev; /* in/out */
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// char name[DM_NAME_LEN]; /* device name */
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// char uuid[DM_UUID_LEN]; /* unique identifier for
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// * the block device */
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// char data[7]; /* padding or data */
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// };
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// struct target {
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// uint64_t start;
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// uint64_t length;
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// char *type;
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// char *params;
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// struct target *next;
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// };
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// typedef enum {
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// DM_ADD_NODE_ON_RESUME, /* add /dev/mapper node with dmsetup resume */
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// DM_ADD_NODE_ON_CREATE /* add /dev/mapper node with dmsetup create */
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// } dm_add_node_t;
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// struct dm_task {
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// int type;
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// char *dev_name;
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// char *mangled_dev_name;
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// struct target *head, *tail;
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// int read_only;
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// uint32_t event_nr;
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// int major;
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// int minor;
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// int allow_default_major_fallback;
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// uid_t uid;
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// gid_t gid;
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// mode_t mode;
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// uint32_t read_ahead;
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// uint32_t read_ahead_flags;
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// union {
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// struct dm_ioctl *v4;
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// } dmi;
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// char *newname;
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// char *message;
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// char *geometry;
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// uint64_t sector;
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// int no_flush;
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// int no_open_count;
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// int skip_lockfs;
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// int query_inactive_table;
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// int suppress_identical_reload;
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// dm_add_node_t add_node;
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// uint64_t existing_table_size;
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// int cookie_set;
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// int new_uuid;
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// int secure_data;
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// int retry_remove;
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// int enable_checks;
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// int expected_errno;
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// char *uuid;
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// char *mangled_uuid;
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// };
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//
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