copy(9) 맨 페이지 - 윈디하나의 솔라나라

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copy(9)

The  functions  are designed to copy contiguous data from one ad‐
dress to another.  All but copy data from user-space  to  kernel-
space  or  vice-versa.  The and functions copy bytes of data from
the user-space address to the kernel-space address The and  func‐
tions  copy  bytes  of  data from the kernel-space address to the
user-space address The and functions  require  that  the  kernel-
space  and user-space data be accessible without incurring a page
fault.  The source and destination addresses must  be  physically
mapped  for  read and write access, respectively, and neither the
source nor destination addresses may be pageable.   The  function
copies  a NUL-terminated string, at most bytes long, from kernel-
space address to kernel-space address The number of  bytes  actu‐
ally copied, including the terminating NUL, is returned in (if is
The  function copies a NUL-terminated string, at most bytes long,
from user-space address to kernel-space  address  The  number  of
bytes actually copied, including the terminating NUL, is returned
in (if is The functions return 0 on success.  All but return if a
bad  address  is encountered.  The and functions return if a page
fault occurs.  The and functions return if the string  is  longer
than bytes.














































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