kcopy(9) - NetBSD Manual Pages

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KCOPY(9)               NetBSD Kernel Developer's Manual               KCOPY(9)


NAME

     kcopy -- copy data with abort on page fault


SYNOPSIS

     #include <sys/systm.h>

     int
     kcopy(const void *src, void *dst, size_t len);


DESCRIPTION

     kcopy() copies len bytes from src to dst, aborting if a fatal page fault
     is encountered.

     kcopy() must save and restore the old fault handler since it is called by
     uiomove(9), which may be in the path of servicing a non-fatal page fault.


RETURN VALUES

     kcopy() returns 0 on success and an error number on failure.


SEE ALSO

     errno(2), memcpy(9), uiomove(9)

NetBSD 9.4_STABLE                April 6, 2017               NetBSD 9.4_STABLE