Index for Section 9r

Alphabetical listing for C

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copyin(9r)
NAME
  copyin - General: Copies data from a user address space to a kernel address
  space

SYNOPSIS
  int copyin(
	  caddr_t user_src,
	  caddr_t kernel_dest,
	  u_int bcount );

ARGUMENTS
  user_src
      Specifies the address in user space of the data to be copied.

  kernel_dest
      Specifies the address in kernel space to copy the data to.

  bcount
      Specifies the number of bytes to copy.

DESCRIPTION
  The copyin routine copies a specified amount of data from the unprotected
  user address space to the protected kernel address space.

RETURN VALUES
  Upon successful completion, copyin returns a value of 0 (zero). Otherwise,
  it can return the following error:

  EFAULT  The address in user space that you specified in the user_src
	  argument cannot be accessed.

SEE ALSO
  Routines: copyinstr(9r), copyout(9r)

Index for Section 9r

Alphabetical listing for C

Top of page