Kernel VM Library Functions                        kvmread(3KVM)



NAME
     kvmread, kvmwrite - copy data to or from a kernel image or
     running system

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

     ssizet kvmread(kvmt *kd, uintptrt addr, void *buf, sizet nbytes);


     ssizet kvmwrite(kvmt *kd, uintptrt addr, void *buf, sizet nbytes);


DESCRIPTION
     The kvmread() function transfers data from the kernel image
     specified by kd (see kvmopen(3KVM)) 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 kvmwrite() function is like kvmread(), except that the
     direction  of  data  transfer is reversed. To use this func-
     tion, the kvmopen(3KVM) call that  returned  kd  must  have
     specified  write access. If a user virtual address is given,
     it is resolved in the address space of the process specified
     in the most recent kvmgetu(3KVM) call.

USAGE
     The kvmread() and kvmwrite() functions  are  obsolete  and
     might   be  removed  in  a  future  release.  The  functions
     described on the kvmkread(3KVM) manual page should be  used
     instead.

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

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













SunOS 5.11           Last change: 2 May 2002                    1






Kernel VM Library Functions                        kvmread(3KVM)



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface Stability          Obsolete                    
    
     MT-Level                     Unsafe                      
    


SEE ALSO
     kvmgetu(3KVM),              kvmkread(3KVM)kvmnlist(3KVM),
     kvmopen(3KVM), attributes(5)











































SunOS 5.11           Last change: 2 May 2002                    2