renameat()函式 Unix/Linux


renameat - 重新命名相對於目錄檔案的描述符檔案

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

這個系統呼叫是非標準的,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.

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