NAME¶

fetch, fubyte, fuswintr, fuword, fuword16, fuword32, fuword64 — fetch data from user-space

SYNOPSIS¶

#include <sys/types.h>
#include <sys/time.h>
#include <sys/systm.h> int
fubyte(const void *base); long
fuword(const void *base); int
fuword16(void *base); int32_t
fuword32(const void *base); int64_t
fuword64(const void *base); #include <sys/resourcevar.h> int
fuswintr(void *base);

DESCRIPTION¶

The fetch functions are designed to copy small amounts of data from user-space. The fetch routines provide the following functionality:

fubyte()

Fetches a byte of data from the user-space address base.

fuword()

Fetches a word of data from the user-space address base.

fuword16()

Fetches 16 bits of data from the user-space address base.

fuword32()

Fetches 32 bits of data from the user-space address base.

fuword64()

Fetches 64 bits of data from the user-space address base.

fuswintr()

Fetches a short word of data from the user-space address base. This function is safe to call during an interrupt context.

RETURN VALUES¶

The fetch functions return the data fetched or -1 on failure.

SEE ALSO¶

copy(9), store(9)