HP-UX Reference (11i v2 07/12) - 2 System Calls (vol 5)

open(2) open(2)

int infd;

infd = open ("inputfile", O_RDONLY);

The following call to open() opens ﬁle

outputfile for writing and returns a ﬁle descriptor for out-

putfile

. For an example of preallocating disk space for

outputfile

, see the prealloc(2) manual

entry. For an example of writing to

outputfile , see the write(2) manual entry.

int outfd;

outfd = open ("outputfile", O_WRONLY);

The following call opens ﬁle iofile

for synchronized I/O ﬁle integrity for reads and writes.

int iofd;

iofd = open ("iofile", O_RDWR|O_SYNC|O_RSYNC);

AUTHOR

open() was developed by HP, AT&T, and the University of California, Berkeley.