Manual Pages for UNIX Operating System command usage for man kvm_kwrite

Kernel VM Library Functions                       kvm_kread(3KVM)



NAME
     kvm_kread, kvm_kwrite, kvm_uread, kvm_uwrite - copy data  to
     or from a kernel image or running system

SYNOPSIS
     cc [ flag... ] file... -lkvm [ library...]
     #include 

     ssize_t kvm_kread(kvm_t *kd, uintptr_t addr, void *buf, size_t nbytes);


     ssize_t kvm_kwrite(kvm_t *kd, uintptr_t addr, void *buf, size_t nbytes);


     ssize_t kvm_uread(kvm_t *kd, uintptr_t addr, void *buf, size_t nbytes);


     ssize_t kvm_uwrite(kvm_t *kd, uintptr_t addr, void *buf, size_t nbytes);


DESCRIPTION
     The kvm_kread() function  transfers  data  from  the  kernel
     address  space  to  the address space of the process. nbytes
     bytes of data are copied from  the  kernel  virtual  address
     given by addr to the buffer pointed to by buf.


     The kvm_kwrite() function is like kvm_kread(),  except  that
     the direction of the transfer is reversed. To use this func-
     tion, the kvm_open(3KVM) call that returned   kd  must  have
     specified write access.


     The kvm_uread() function transfers  data  from  the  address
     space   of  the  processes  specified  in  the  most  recent
     kvm_getu(3KVM) call. nbytes bytes of data  are  copied  from
     the user virtual address given by addr to the buffer pointed
     to by buf.


     The kvm_uwrite() function is like kvm_uread(),  except  that
     the direction of the transfer is reversed. To use this func-
     tion, the kvm_open(3KVM) call that  returned  kd  must  have
     specified  write  access.  The  address  is  resolved in the
     address space of the process specified in  the  most  recent
     kvm_getu(3KVM) call.

RETURN VALUES
     On success, these functions return the number of bytes actu-
     ally transferred. On failure, they return -1.





SunOS 5.11           Last change: 2 May 2002                    1






Kernel VM Library Functions                       kvm_kread(3KVM)



ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | Unsafe                      |
    |_____________________________|_____________________________|


SEE ALSO
     kvm_getu(3KVM),  kvm_nlist(3KVM),   kvm_open(3KVM),   attri-
     butes(5)





































SunOS 5.11           Last change: 2 May 2002                    2