renameat - 重命名相對於目錄文件的描述符文件

內容簡介

#include <stdio.h>

int renameat(int olddirfd**, const char *oldpath,** int newdirfd**, const char *newpath);**

描述

The  renameat () system call operates in exactly the same way as  rename (2), except for the differences described in this manual page.

If the pathname given in oldpath is relative, then it is interpreted relative to the directory referred to by the file descriptor olddirfd (rather than relative to the current working directory of the calling process, as is done by rename(2) for a relative pathname).

If the pathname given in oldpath is relative and olddirfd is the special value AT_FDCWD, then oldpath is interpreted relative to the current working directory of the calling process (like rename(2)).

If the pathname given in oldpath is absolute, then olddirfd is ignored.

The interpretation of newpath is as for oldpath, except that a relative pathname is interpreted relative to the directory referred to by the file descriptor newdirfd.

返回值

On success,  renameat () returns 0. On error, -1 is returned and  errno  is set to indicate the error.

錯誤

The same errors that occur for  rename (2) can also occur for  renameat (). The following additional errors can occur for  renameat ():

標籤

描述

EBADF

olddirfd or newdirfd is not a valid file descriptor.

ENOTDIR

 

oldpath is a relative path and olddirfd is a file descriptor referring to a file other than a directory; or similar for newpath andnewdirfd

注意

See  openat (2) for an explanation of the need for  renameat ().

遵循於

這個系統調用是非標準的，但建議列入POSIX.1將來的修訂版。

版本

renameat () was added to Linux in kernel 2.6.16.

另請參閱

• openat (2)

• rename (2)

• path_resolution (2)