NAME

VOP_PATHCONF —

return POSIX pathconf information

SYNOPSIS

#include <sys/param.h>
#include <sys/vnode.h>
#include <sys/unistd.h>

int
VOP_PATHCONF(struct vnode *vp, int name, long *retval);

The arguments are:

The value of name specifies what should be returned:

_PC_LINK_MAX: The maximum number of links to a file.
_PC_NAME_MAX: The maximum number of bytes in a file name.
_PC_PATH_MAX: The maximum number of bytes in a pathname.
_PC_PIPE_BUF: The maximum number of bytes which will be written atomically to a pipe.
_PC_CHOWN_RESTRICTED: Return 1 if appropriate privileges are required for the chown(2) system call, otherwise 0.
_PC_NO_TRUNC: Return 1 if file names longer than KERN_NAME_MAX are truncated.

The vnode will be locked on entry and should remain locked on return.

If name is recognized, *retval is set to the specified value and zero is returned, otherwise EINVAL is returned.

This manual page was written by Doug Rabson.