Index for Section 9r

Alphabetical listing for S

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subyte(9r)
NAME
  subyte - General: Writes a byte into user address space

SYNOPSIS
  int subyte(
	  char *user_dest,
	  char byte );

ARGUMENTS
  user_dest
      Specifies the address in user space to write the byte.

  byte
      Specifies the byte to be written.

DESCRIPTION
  The subyte routine copies 1 byte from the protected kernel address space to
  the unprotected user address space.

RETURN VALUES
  Upon successful completion, subyte returns the value 0 (zero).  Otherwise,
  it returns a -1, indicating that the user address specified in user_dest
  could not be accessed.

SEE ALSO
  Routines: copyout(9r), copyoutstr(9r), fubyte(9r), fuword(9r), suword(9r)

Index for Section 9r

Alphabetical listing for S

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