개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

device_get_state(9)

DEVICE_GET_STATE(9)      BSD Kernel Developer's Manual     DEVICE_GET_STATE(9)

NAME
     device_get_state, device_busy, device_unbusy, device_is_alive,
     device_is_attached — manipulate device state

SYNOPSIS
     #include <sys/param.h>
     #include <sys/bus.h>

     device_state_t
     device_get_state(device_t dev);

     void
     device_busy(device_t dev);

     void
     device_unbusy(device_t dev);

     int
     device_is_alive(device_t dev);

     int
     device_is_attached(device_t dev);

DESCRIPTION
     The current state of a device is accessed by calling device_get_state()
     which returns DS_NOTPRESENT, DS_ALIVE, DS_ATTACHED or DS_BUSY (described
     in device(9)).  To test see if a device was successfully probed, call
     device_is_alive() which simply returns if the state is greater or equal
     to DS_ALIVE.  To test see if a device was successfully attached, call
     device_is_attached() which simply returns if the state is greater or
     equal to DS_ATTACHED.

     Each device has a busy count which is incremented when device_busy() is
     called and decremented when device_unbusy() is called.  Both routines
     return an error if the device state is less than DS_ATTACHED.

     When device_busy() is called on a device in the DS_ATTACHED state, the
     device changes to the DS_BUSY state.  When device_unbusy() is called and
     after decrementing, the busy count for the device is zero, the device
     changes to the DS_ATTACHED state.

SEE ALSO
     device(9)

AUTHORS
     This manual page was written by Doug Rabson.

BSD                              June 16, 1998                             BSD