KVM_READ(3)                 BSD Programmer's Manual                KVM_READ(3)

NAME
     kvmread, kvmwrite - read or write kernel virtual memory

SYNOPSIS
     #include <kvm.h>

     ssizet
     kvmread(const kvmt *kd, ulong addr, char *buf, sizet nbytes)

     ssizet
     kvmwrite(const kvmt *kd, ulong addr, char *buf, sizet nbytes)

DESCRIPTION
     The kvmread() and kvmwrite() functions are used to read and write ker-
     nel virtual memory (or a crash dump file). See kvmopen(3) or
     kvmopenfiles(3) for information regarding opening kernel virtual memory
     and crash dumps.

     The kvmread() function transfers nbytes bytes of data from the kernel
     space address addr to buf. Conversely, kvmwrite() transfers data from
     buf to addr. Unlike their SunOS counterparts, these functions cannot be
     used to read or write process address spaces.

RETURN VALUES
     Upon success, the number of bytes actually transferred is returned.  Oth-
     erwise, -1 is returned.

SEE ALSO
     kvm(3),  kvm_close(3),  kvm_getargv(3),  kvm_getenvv(3),  kvm_geterr(3),
     kvm_getprocs(3),  kvm_nlist(3),  kvm_open(3),  kvm_openfiles(3)

BSDI BSD/386                    March 26, 1993                               1