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DIOCWDINFO(9r)


NAME

  DIOCWDINFO - Disk: Writes a disk label


SYNOPSIS

  #include <io/common/devio.h>
  #include <sys/ioctl.h>


  int ioctl(
	  dev_t dev,
	  register int DIOCWDINFO,
	  caddr_t data,
	  int flag );


DESCRIPTION

  The DIOCWDINFO ioctl command writes a disklabel structure and updates the
  in-memory copy of the structure. The command turns off write-protection for
  the duration of the request, but does not check to see if the user has root
  privileges.


EXAMPLE

  See Writing Device Drivers: Advanced Topics for an example of how a disk
  device driver implements the DIOCWDINFO command.


SEE ALSO

  Kernel Interfaces: writedisklabel(9r)

  Data Structures: disklabel(9s)

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