Summary
This class deals with various APIs that manipulate files and directories. We will learn more about stat structures, file attributes, briefly discuss file system structures and directory operations.
List of topics
- stat and Related Functions
- Definition of the stat Structure
- File Types
- Let’s improve the code (myls.c, Fig. 4.3)
- Set-User-ID and Set-Group-ID
- File Access Permissions
- access and faccessat Function
- access Function Example
- Order of Permission Tests
- umask Function
- umask Example
- umask More
- chmod, fchmod, and fchmodat Functions
- chmod Example
- chown, fchown, fchownat, and lchown Function
- File Size
- File Size Example
- File Truncation
- Disk drive, partitions, and a file system
- Cylinder group’s inodes and data blocks in more detail
- Sample cylinder group after creating the directory testdir
- link(2) Function
- unlink(2) Function
- Open a file and then unlink it
- remove(2) Function
- rename Function
- Creating Symbolic Links
- Reading Symbolic Links
- File Times
- Effect of various functions on the \texttt{mac times}
- futimens, utimensat, and utimes Functions
- mkdir and mkdirat Functions
- rmdir Function
- Reading Directories
- Moving Around Directories
Home works
- Review chapter 4
- Read chapter 5 Setup ctag, download the kernel containing F2FS, we are going to implement new feature – more info at project announcement
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