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This filesystem is based on the code of the long-lived TmpFS. It differs from that filesystem in one keypoint - its root inode doesn't have a sticky bit on it. Therefore, we mount it on /dev, to ensure only root can modify files on that directory. In addition to that, /tmp is mounted directly in the SystemServer main (start) code, so it's no longer specified in the fstab file. We ensure that /tmp has a sticky bit and has the value 0777 for root directory permissions, which is certainly a special case when using RAM-backed (and in general other) filesystems. Because of these 2 changes, it's no longer needed to maintain the TmpFS filesystem, hence it's removed (renamed to RAMFS), because the RAMFS represents the purpose of this filesystem in a much better way - it relies on being backed by RAM "storage", and therefore it's easy to conclude it's temporary and volatile, so its content is gone on either system shutdown or unmounting of the filesystem.
SerenityOS Documentation
Serenity development moves quickly, so some of these might be out of date. Please let us know if something here is wrong, or submit a PR with any additions or corrections! If you have any questions that are not answered here or in the FAQ, you are welcome to ask on Discord.
A list of useful pages across the web can be found on the link list.
Building and Running
- Build Instructions
- Advanced Build Instructions
- Troubleshooting
- Running in VirtualBox
- Running in VMware
- Running Tests
- Setting Up Self-Hosted Runners
- Profiling the Build
OS-specific
Make sure to read the basic Build Instructions first.
Running on Hardware
Configuring Editors
Development
- How to Contribute
- Coding Style
- Common Patterns
- EventLoop
- High DPI Support
- Smart Pointers
- String Formatting
- How to Transfer Files Out of Serenity
File and Data Formats
- Application Files (.af)
- Bitmap Fonts (.font)
- Clipboard data
- Drag-and-drop data
- GUI Markup Language (.gml)
- HackStudio Post-Create Scripts (.postcreate)
- Inter-Process Communication protocol (.ipc)
Browser/LibWeb
Kernel
Applications
Documentation for SerenityOS applications and utilities can be found in the man pages.