creat64.2 (2010 09)

creat64(2) creat64(2)

_FILE_OFFSET_BITS

is set to 64. The bit may be queried by

fcntl() (or

fcntl64()), which can also turn the bit on or off if desired.

APPLICATION USAGE

The standard POSIX interfaces may be used by 32-bit applications to create and access large ﬁles if com-

piled with

_FILE_OFFSET_BITS

set to 64.

The interfaces described here are alternatives to the standard ones, and are enabled by deﬁning

_LARGEFILE64_SOURCE

For 64-bit applications, access to large ﬁles is automatic, as long as the underlying ﬁle system is enabled

for large ﬁles. The interfaces on this man page are available to 64-bit applications, for convenience in

porting, but provide no additional capabilities. The exception is

O_LARGEFILE, which is not visible to

64-bit applications.