The Unix system call which establishes a mapping between a range of addresses in a user process' s address space and a portion of some "memory object" (typically a file, one of the special "devices" /dev/mem or /dev/kmem or some memory-mapped peripheral). This allows the process to access a file at random byte offsets without using the seek system call or to access physical addresses or kernel' s virtual address space. It can also be used as an alternative to writing a device driver since it is usually simpler to code and faster to use. (1995-02-14)

In addition suitable contents:
[ 2 ] [ = ] [ ad ] [ address ] [ address space ] [ al ] [ alt ] [ am ] [ an ] [ app ] [ ar ] [ arc ] [ as ] [ at ] [ b ] [ be ] [ bj ] [ by ] [ byte ] [ ca ] [ cc ] [ ch ] [ ci ] [ co ] [ code ] [ dd ] [ de ] [ device ] [ device driver ] [ do ] [ driver ] [ du ] [ ec ] [ ed ] [ ee ] [ er ] [ era ] [ es ] [ et ] [ fas ] [ fi ] [ file ] [ ge ] [ h ] [ hr ] [ id ] [ il ] [ in ] [ inc ] [ io ] [ ir ] [ is ] [ it ] [ ke ] [ kernel ] [ km ] [ Lex ] [ li ] [ ls ] [ lt ] [ ly ] [ ma ] [ map ] [ mapping ] [ memory ] [ mo ] [ mod ] [ module ] [ mp ] [ na ] [ nc ] [ ne ] [ ng ] [ ni ] [ object ] [ offset ] [ om ] [ pa ] [ pe ] [ peripheral ] [ ph ] [ physical ] [ physical address ] [ ping ] [ pl ] [ port ] [ pr ] [ process ] [ query ] [ random ] [ range ] [ rc ] [ re ] [ ro ] [ se ] [ seek ] [ set ] [ sh ] [ si ] [ so ] [ space ] [ spec ] [ st ] [ su ] [ sy ] [ system ] [ system call ] [ T ] [ th ] [ to ] [ tw ] [ ua ] [ us ] [ user ] [ ve ] [ vi ] [ virtual ] [ virtual address ] [ ws ] [ yt ]