copy_to_phys(9r) [osf1 man page]

copy_to_phys(9r)														  copy_to_phys(9r)

NAME

       copy_to_phys - General: Copies data from a virtual address to a physical address

SYNOPSIS

       void copy_to_phys(
	       vm_offset_t virt_src,
	       vm_offset_t phys_dest,
	       unsigned int bcount );

ARGUMENTS

       Specifies the virtual address of the data to be copied.	Specifies the physical address to copy the data to.  Specifies the number of bytes
       to copy.

DESCRIPTION

       The copy_to_phys routine copies a specified amount of virtually addressed memory to physically addressed memory. The addresses reside  only
       in system memory space and not in the memory space on I/O buses.

CAUTIONS

       If any overlap exists between virt_src and phys_dest, the copy_to_phys routine panics.

RETURN VALUES

       None

SEE ALSO

       Routines: copyin(9r), copyout(9r), io_copyin(9r), io_copyio(9r), io_copyout(9r)

																  copy_to_phys(9r)

copyinstr(9r)															     copyinstr(9r)

NAME

       copyinstr - General: Copies a null-terminated string from a user address space to a kernel address space

SYNOPSIS

       int copyinstr(
	       char *user_src,
	       char *kernel_dest,
	       int maxlength,
	       int *lencopied );

ARGUMENTS

       Specifies  the  address	in user space of the null-terminated string to be copied.  Specifies the address in kernel space to copy the null-
       terminated string to.  Specifies the maximum number of bytes to copy.  Specifies the actual length of the string copied.

DESCRIPTION

       The copyinstr routine copies a specified null-terminated string from the unprotected user address space to a specified address in the  pro-
       tected kernel address space.

CAUTIONS

       If the string being copied is not null terminated, copyinstr copies maxlength bytes into the kernel address space.

RETURN VALUES

       Upon successful completion, copyinstr returns the value 0 (zero) and the actual length of the string copied to the lencopied argument. Oth-
       erwise, it returns one of the following error constants defined in /usr/sys/include/sys/errno.h: The address in user space that you  speci-
       fied in the user_src argument cannot be accessed.  The length of the string exceeds the maxlength value.

SEE ALSO

       Routines: copyoutstr(9r)

																     copyinstr(9r)