VOP_PATHCONF9
Return posix pathconf information
Usage
#include <sys/param.h>
#include <sys/vnode.h>
#include <sys/unistd.h>
int
VOP_PATHCONF(struct vnode *vp, int name, long *retval);
Overview
The arguments are:
- vp
-
The vnode to get information about.
- name
-
The type of information to return.
- retval
-
The place to return the information.
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.
Locks
The vnode will be locked on entry and should remain locked on return.
Return values
If name is recognized, *retval is set to the specified value and zero is returned, otherwise EINVAL is returned.
Releases
83 releases since FreeBSD 2.2.2-RELEASE; the text changed 42 times.