LC

Create Files Using open(), write(), close() System Calls

easy2/10

Implement In-Memory Filesystem Using Tree of struct inode Implement Directory Operations: mkdir, rmdir, readdir

Language

Compiler

2.0s Limit 256MB

Implementation

Create files using system calls.

Requirements:

Use open() with O_CREAT | O_WRONLY | O_TRUNC flags
Set file permissions to 0644 (rw-r--r--)
Check all return values for errors
Write content to created files
Close file descriptors
Use perror() for error reporting
Create multiple files
Handle errors gracefully

Test:

Create text files
Write content to files
Verify file creation
Handle errors properly

Why This Matters

open(), write(), and close() are the exact three syscalls every C library's fopen()/fwrite()/fclose() eventually wraps, and the O_CREAT|O_TRUNC flag combination here is what tools like logrotate rely on to atomically replace files. Skipping the return-value check on open() is one of the most common real-world causes of silent data loss in production logging pipelines.

Hints

0 / 3 revealed

Validation Suite

main.c

Workspace 1.0