Messages in this thread | | | From | Jidong Xiao <> | Date | Wed, 17 Nov 2021 19:19:54 -0700 | Subject | how and when to create the "." and ".." entry in Linux file systems? |
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Hello,
I'm trying to learn how to implement a very simple file system in a Linux system. I started with registering the file system, allocating and initializing the superblock, and allocating the root inode of this file system. Now after mount, I can "cd" into my file system root directory - the directory where this file system is mounted.
Now my next goal is, in the root directory, if I run "ls -a", I should see "." and "..". I think this behavior should be common among all file systems, thus in my file system code, I likely don't need to do anything fancy, but maybe just call some VFS function? If so, call which function? Are these two entries (. and ..) supposed to be created when the file system is mounted or later - like not created until I run "ls -a"?
Thank you.
-Jidong
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