> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man9/vop_create.9.md).

# VOP\_CREATE.9

`VOP_CREATE` — 创建文件、套接字、fifo、设备、目录或符号链接

## 名称

`VOP_CREATE`, `VOP_MKNOD`, `VOP_MKDIR`, `VOP_SYMLINK`

## 概要

```c
#include <sys/param.h>
#include <sys/vnode.h>
#include <sys/namei.h>

int
VOP_CREATE(struct vnode *dvp, struct vnode **vpp,
    struct componentname *cnp, struct vattr *vap)

int
VOP_MKNOD(struct vnode *dvp, struct vnode **vpp,
    struct componentname *cnp, struct vattr *vap)

int
VOP_MKDIR(struct vnode *dvp, struct vnode **vpp,
    struct componentname *cnp, struct vattr *vap)

int
VOP_SYMLINK(struct vnode *dvp, struct vnode **vpp,
    struct componentname *cnp, struct vattr *vap, const char *target)
```

## 描述

这些入口点在给定目录中创建新的文件、套接字、fifo、设备、目录或符号链接。

参数为：

**`dvp`** 目录的已锁定 vnode。

**`vpp`** 用于存储生成的已锁定 vnode 的变量地址。

**`cnp`** 创建的路径名组件。

**`vap`** 新对象应具有的创建属性。

**`target`** 符号链接目标的路径名。

当创建对象时，这些入口点在 [VOP\_LOOKUP(9)](/man/man9/vop_lookup.9.md) 之后被调用。

## 锁定

目录 `dvp` 在入口时将被锁定，并且在返回时必须保持锁定。如果调用成功，新对象将以锁定状态返回。

## 返回值

如果成功，新对象的 vnode 将被放入 `*vpp` 并返回零。否则，返回适当的错误。

## 错误

**\[`ENOSPC`]** 文件系统已满。

**\[`EDQUOT`]** 将超过用户的文件系统空间或 inode 配额。

## 参见

[vnode(9)](/man/man9/vnode.9.md), [VOP\_LOOKUP(9)](/man/man9/vop_lookup.9.md)

## 历史

`VOP_SYMLINK` 函数出现于 4.3BSD。

## 作者

本手册页由 Doug Rabson 编写。


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