> 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/vfs_rootmountalloc.9.md).

# vfs\_rootmountalloc.9

`vfs_rootmountalloc` — 分配根 `mount` 结构

## 名称

`vfs_rootmountalloc` `mount` 结构

## 概要

`#include <sys/param.h>`

`#include <sys/mount.h>`

`int vfs_rootmountalloc(char *fstypename, char *devname, struct mount **mpp)`

## 描述

`vfs_rootmountalloc()` 分配一个从与 `fstypename` 匹配的 `vfsconf` 类型初始化的 `mount` 结构。

## 返回值

成功时返回 0，`mpp` 指向新分配的 `mount` 结构。如果 `fstypename` 为 `NULL` 或无效，则返回 `ENODEV`。

## 参见

[vfsconf(9)](/man/man9/vfsconf.9.md)

## 作者

本手册页由 Chad David <davidc@acns.ab.ca> 编写。


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