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fubyte

man page of fubyte

fubyte: fetch data from user-space

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) FUBYTE(9)
 
 
 

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