OPENDEV(3) BSD Programmer's Manual OPENDEV(3)NAMEopendev - short form device open routine
SYNOPSIS
#include <util.h>
int
opendev(char *path, int oflags, int dflags, char **realpath);
DESCRIPTION
The opendev() function opens a device using the "short form" name. This
is typically "sd0" or "sd0c", for instance, which will be expanded to
/dev/rsd0c on most architectures.
Device name lookup is done by first checking path for a "/" and if one is
found attempting to open that file. Otherwise /dev is searched for a
matching device.
The oflags are the same as the flags passed to open(2).
The dflags are specified by OR'ing the following values:
OPENDEV_PART attempt to open the raw partition during expansion
OPENDEV_BLCK open the block device (default is character device)
If realpath is not NULL, it is modified to point at the fully expanded
device name.
RETURN VALUES
The opendev() return value and errors are the same as the return value
and errors of open(2).
WARNINGS
If realpath is not NULL, on return it will point to internal static
storage space that will be overwritten by subsequent calls.
SEE ALSOopen(2), getrawpartition(3)HISTORY
The opendev() function first appeared in OpenBSD 1.2.
MirOS BSD #10-current February 15, 2000 1
