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OpenSolaris 2009.06 - man page for kvm_read (opensolaris section 3kvm)

kvm_read(3KVM)						    Kernel VM Library Functions 					    kvm_read(3KVM)

NAME
kvm_read, kvm_write - copy data to or from a kernel image or running system
SYNOPSIS
cc [ flag... ] file... -lkvm [ library...] #include <kvm.h> ssize_t kvm_read(kvm_t *kd, uintptr_t addr, void *buf, size_t nbytes); ssize_t kvm_write(kvm_t *kd, uintptr_t addr, void *buf, size_t nbytes);
DESCRIPTION
The kvm_read() function transfers data from the kernel image specified by kd (see kvm_open(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 kvm_write() function is like kvm_read(), except that the direction of data transfer is reversed. To use this function, the kvm_open(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 kvm_getu(3KVM) call.
USAGE
The kvm_read() and kvm_write() functions are obsolete and might be removed in a future release. The functions described on the kvm_kread(3KVM) manual page should be used instead.
RETURN VALUES
On success, these functions return the number of bytes actually transferred. On failure, they return -1.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Obsolete | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+
SEE ALSO
kvm_getu(3KVM), kvm_kread(3KVM)kvm_nlist(3KVM), kvm_open(3KVM), attributes(5) SunOS 5.11 2 May 2002 kvm_read(3KVM)

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