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Man Pages


Manual Reference Pages  -  KVM_READ (3)

NAME

kvm_read, kvm_write - read or write kernel virtual memory

CONTENTS

Library
Synopsis
Description
Return Values
See Also

LIBRARY


.Lb libkvm

SYNOPSIS


.In kvm.h ssize_t kvm_read kvm_t *kd unsigned long addr void *buf size_t nbytes ssize_t kvm_write kvm_t *kd unsigned long addr const void *buf size_t nbytes

DESCRIPTION

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 or kvm_openfiles 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.

RETURN VALUES

Upon success, the number of bytes actually transferred is returned. Otherwise, -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)
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