KVM_READ(3) OpenBSD Programmer's Manual KVM_READ(3)
kvm_read, kvm_write - read or write kernel virtual memory
kvm_read(kvm_t *kd, u_long addr, void *buf, size_t nbytes);
kvm_write(kvm_t *kd, u_long addr, const void *buf, size_t nbytes);
The kvm_read() and kvm_write() functions are used to read and write
kernel virtual memory (or a crash dump file). See kvm_open(3) for
information regarding opening kernel virtual memory and crash dumps.
The kvm_read() function transfers nbytes bytes of data from the kernel
space address addr to buf. Conversely, kvm_write() transfers data from
buf to addr. Unlike their SunOS counterparts, these functions cannot be
used to read or write process address spaces.
Upon successful completion, the number of bytes actually transferred is
returned. Otherwise, -1 is returned.
kvm(3), kvm_geterr(3), kvm_getprocs(3), kvm_nlist(3), kvm_open(3)
OpenBSD 5.1 August 18, 2011 OpenBSD 5.1
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