개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

VOP_OPEN(9)

VOP_OPEN(9)              BSD Kernel Developer's Manual             VOP_OPEN(9)

NAME
     VOP_OPEN, VOP_CLOSE — open or close a file

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

     int
     VOP_OPEN(struct vnode *vp, int mode, struct ucred *cred,
         struct thread *td, struct file *fp);

     int
     VOP_CLOSE(struct vnode *vp, int mode, struct ucred *cred,
         struct thread *td);

DESCRIPTION
     The VOP_OPEN() entry point is called before a file is accessed by a
     process and the VOP_CLOSE() entry point is called after a file is fin‐
     ished with by the process.

     The arguments are:

     vp    The vnode of the file.

     mode  The access mode required by the calling process.

     cred  The caller's credentials.

     td    The thread which is accessing the file.

     fp    The file being opened.

     Pointer to the file fp is useful for file systems which require such
     information, e.g., fdescfs(5).  Use ‘NULL’ as fp argument to VOP_OPEN()
     for in-kernel opens.

     The access mode is a set of flags, including FREAD, FWRITE, O_NONBLOCK,
     O_APPEND.

LOCKS
     VOP_OPEN() expects vp to be locked on entry and will leave it locked on
     return.

     VOP_CLOSE() expects at least a reference to be associated with the vnode
     and does not care whether the vnode is locked or not.  The lock and ref‐
     erence state is left unchanged on return.  Note that vn_close expects an
     unlocked, referenced vnode and will dereference the vnode prior to
     returning.

RETURN VALUES
     Zero is returned on success, otherwise an error code is returned.

SEE ALSO
     vnode(9), VOP_LOOKUP(9)

AUTHORS
     This manual page was written by Doug Rabson.

BSD                            December 2, 2009                            BSD