host discovery using bash Post: 302175716

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LEARN ABOUT OSX

fetch

FETCH(9)						   BSD Kernel Developer's Manual						  FETCH(9)

NAME

     fetch, fubyte, fuibyte, fuiword, fulong, fuulong, fuword -- fetch data from user-space

SYNOPSIS

     #include <sys/types.h>
     #include <sys/time.h>
     #include <sys/systm.h>
     #include <sys/resourcevar.h>

     int
     fubyte(const user_addr_t addr);

     int
     fuibyte(const user_addr_t addr);

     int
     fuiword(user_addr_t addr);

     int64_t
     fulong(user_addr_t addr);

     uint64_t
     fuulong(user_addr_t addr);

     int
     fuword(user_addr_t addr);

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 addr.

     fuibyte()	Fetches a byte of data from the user-space address addr.  This function is safe to call during an interrupt context.

     fuiword()	Fetches a word of data from the user-space address addr.  This function is safe to call during an interrupt context.

     fulong()	Fetches a long word of data from the user-space address addr.

     fuulong()	Fetches a unsigned long word of data from the user-space address addr.

     fuword()	Fetches a word of data from the user-space address addr.

RETURN VALUES

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

SEE ALSO

     copy(9), store(9)

BSD
								 December 16, 2004							       BSD

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