serenity - The Serenity Operating System 🐞

Age	Commit message (Collapse)	Author
2019-02-08	Userland: Add a /bin/pape helper program to switch the desktop wallpaper.	Andreas Kling

2019-02-08	WindowServer: Support desktop wallpapers.	Andreas Kling
	For now, you don't get to choose the wallpaper, but it's still pretty cool.
2019-02-07	Start working on a simple Launcher app.	Andreas Kling
	Let GButton have an optional icon (GraphicsBitmap) that gets rendered in the middle of the button if present. Also add GraphicsBitmap::load_from_file() which allows mmap'ed RGBA32 files. I wrote a little program to take "raw" files from GIMP and swizzle them into the correct byte order.
2019-02-05	Clock: Turns the clock window from guitest2 into a separate program.	Andreas Kling
	We can't not have a desktop clock app. :^)
2019-02-04	Add a /bin/top program for process table monitoring.	Andreas Kling
	It automagically computes %CPU usage based on the number of times a process has been scheduled between samples. The colonel task is used as idle timer. This is pretty cool. :^)
2019-02-03	Add /dev/{stdin,stdout,stderr} as symlinks to /proc/self/fd/{0,1,2}	Andreas Kling
	Also change /bin/cat to open /dev/stdin if no arguments are provided.
2019-02-02	Start working on a simple graphical font editor.	Andreas Kling
	Editing fonts by editing text files is really slow and boring. A simple font editor seems like a good way to take LibGUI for a spin.
2019-01-30	Rename the default user to "anon" and give him a home directory.	Andreas Kling

2019-01-30	Add a /dev/pts filesystem and make PTY allocation dynamic.	Andreas Kling
	You can now open as many PTY pairs as you like. Well, it's actually capped at 8 for now, but it's just a constant and trivial to change. Unregistering a PTY pair is untested because I didn't want to start mucking with that in Terminal right now.
2019-01-29	Implement basic chmod() syscall and /bin/chmod helper.	Andreas Kling
	Only raw octal modes are supported right now. This patch also changes mode_t from 32-bit to 16-bit to match the on-disk type used by Ext2FS. I also ran into EPERM being errno=0 which was confusing, so I inserted an ESUCCESS in its place.
2019-01-28	Expose the kernel log buffer through /proc/dmesg.	Andreas Kling
	Also add a /bin/dmesg program for convenience.
2019-01-28	Add support for removing directories.	Andreas Kling
	It's really only supported in Ext2FS since SynthFS doesn't really want you mucking around with its files. This is pretty neat though :^) I ran into some trouble with HashMap while working on this but opted to work around it and leave that for a separate investigation.
2019-01-27	Userland: Make a simple /bin/cp for copying files.	Andreas Kling

2019-01-22	Add unlink() syscall and /bin/rm.	Andreas Kling
	This patch adds most of the plumbing for working file deletion in Ext2FS. Directory entries are removed and inode link counts updated. We don't yet update the inode or block bitmaps, I will do that separately.
2019-01-20	Start bringing up LibGUI properly (formerly Widgets.)	Andreas Kling

2019-01-18	Add a simple /bin/sysctl that wraps the files in /proc/sys.	Andreas Kling

2019-01-16	Rework WindowServer to use select() in its main event loop.	Andreas Kling
	The system can finally idle without burning CPU. :^) There are some issues with scheduling making the mouse cursor sloppy and unresponsive that need to be dealt with.
2019-01-16	Add a PTY multiplexer (/dev/ptmx) device.	Andreas Kling
	When you open /dev/ptmx, you get a file descriptor pointing to one of the available MasterPTY's. If none are available, you get an EBUSY. This makes it possible to open multiple (up to 4) Terminals. :^) To support this, I also added a CharacterDevice::open() that gets control when VFS is opening a CharacterDevice. This is useful when we want to return a custom FileDescriptor like we do here.
2019-01-15	Add basic PTY support.	Andreas Kling
	For now, there are four hard-coded PTYs: /dev/pt{m,s}[0123] Use this in the Terminal to open a pty pair and spawn a shell.
2019-01-15	Start working on a graphical Terminal program.	Andreas Kling

2019-01-14	Start refactoring the windowing system to use an event loop.	Andreas Kling
	Userspace programs can now open /dev/gui_events and read a stream of GUI_Event structs one at a time. I was stuck on a stupid problem where we'd reenter Scheduler::yield() due to having one of the has_data_available_for_reading() implementations using locks.
2019-01-13	Start working on a GUI kernel API.	Andreas Kling

2018-12-21	Add a simple /bin/more.	Andreas Kling

2018-12-21	Get rid of three test utilities that I no longer need.	Andreas Kling

2018-12-20	Add sync() syscall and a /bin/sync.	Andreas Kling
	It walks all the live Inode objects and flushes pending metadata changes wherever needed. This could be optimized by keeping a separate list of dirty Inodes, but let's not get ahead of ourselves.
2018-12-19	Implement utime() along with a naive /bin/touch.	Andreas Kling
	This synchronous approach to inodes is silly, obviously. I need to rework it so that the in-memory CoreInode object is the canonical inode, and then we just need a sync() that flushes pending changes to disk.
2018-11-29	Add TIOCGWINSZ ioctl so userland can determine terminal geometry.	Andreas Kling
	(Don't) use this to implement short-form output in ls. I'm too tired to make a nice column formatting algorithm. I just wanted something concise when I type "ls".
2018-11-18	Finally hook up the mkdir code to a syscall.	Andreas Kling
	Added a /bin/mkdir that makes directories. How very neat :^) There are various limitations because of missing functionality.
2018-11-16	Add fcntl() F_DUPFD which is slightly different from dup2().	Andreas Kling

2018-11-11	Add a naive /bin/fgrep for testing pipes.	Andreas Kling

2018-11-11	Add ispunct() to LibC + some minor cleanups.	Andreas Kling

2018-11-09	Fix some paging related bugs exposed by the spawn stress test.	Andreas Kling
	- Process::exec() needs to restore the original paging scope when called on a non-current process. - Add missing InterruptDisabler guards around g_processes access. - Only flush the TLB when modifying the active page tables.
2018-11-06	Add strsignal() and improve sharing signal numbers between LibC and kernel.	Andreas Kling

2018-11-05	Replace zones with individually tracked physical pages.	Andreas Kling
	It's just a simple struct { ref_count, paddr }. This will allow me to implement lazy zeroing and COW pages.
2018-11-02	Implement fork()!	Andreas Kling
	This is quite cool! The syscall entry point plumbs the register dump down to sys$fork(), which uses it to set up the child process's TSS in order to resume execution right after the int 0x80 fork() call. :^) This works pretty well, although there is some problem with the kernel alias mappings used to clone the parent process's regions. If I disable the MM::release_page_directory() code, there's no problem. Probably there's a premature freeing of a physical page somehow.
2018-10-31	Fix busted display of tty names in /proc/summary.	Andreas Kling

2018-10-31	Add a /bin/tty command that prints the current tty.	Andreas Kling
	Also fix ttyname() syscall to include "/dev/" in the name.