LCOV - code coverage report
Current view: top level - include/linux - blkpg.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       1             : #ifndef _LINUX_BLKPG_H
       2             : #define _LINUX_BLKPG_H
       3             : 
       4             : /*
       5             :  * Partition table and disk geometry handling
       6             :  *
       7             :  * A single ioctl with lots of subfunctions:
       8             :  *
       9             :  * Device number stuff:
      10             :  *    get_whole_disk()          (given the device number of a partition,
      11             :  *                               find the device number of the encompassing disk)
      12             :  *    get_all_partitions()      (given the device number of a disk, return the
      13             :  *                               device numbers of all its known partitions)
      14             :  *
      15             :  * Partition stuff:
      16             :  *    add_partition()
      17             :  *    delete_partition()
      18             :  *    test_partition_in_use()   (also for test_disk_in_use)
      19             :  *
      20             :  * Geometry stuff:
      21             :  *    get_geometry()
      22             :  *    set_geometry()
      23             :  *    get_bios_drivedata()
      24             :  *
      25             :  * For today, only the partition stuff - aeb, 990515
      26             :  */
      27             : #include <linux/compiler.h>
      28             : #include <linux/ioctl.h>
      29             : 
      30             : #define BLKPG      _IO(0x12,105)
      31             : 
      32             : /* The argument structure */
      33             : struct blkpg_ioctl_arg {
      34             :         int op;
      35             :         int flags;
      36             :         int datalen;
      37             :         void __user *data;
      38             : };
      39             : 
      40             : /* The subfunctions (for the op field) */
      41             : #define BLKPG_ADD_PARTITION     1
      42             : #define BLKPG_DEL_PARTITION     2
      43             : 
      44             : /* Sizes of name fields. Unused at present. */
      45             : #define BLKPG_DEVNAMELTH        64
      46             : #define BLKPG_VOLNAMELTH        64
      47             : 
      48             : /* The data structure for ADD_PARTITION and DEL_PARTITION */
      49             : struct blkpg_partition {
      50             :         long long start;                /* starting offset in bytes */
      51             :         long long length;               /* length in bytes */
      52             :         int pno;                        /* partition number */
      53             :         char devname[BLKPG_DEVNAMELTH]; /* partition name, like sda5 or c0d1p2,
      54             :                                            to be used in kernel messages */
      55             :         char volname[BLKPG_VOLNAMELTH]; /* volume label */
      56             : };
      57           1 : 
      58             : #endif /* _LINUX_BLKPG_H */

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