zOS is a hobby operating system, built form scratch, in development since November of 2013. It has been totally rewritten from scratch since August 2014.
zOS is based on a micro kernel (named zKernel), that has the particularity of having the Virtual File System embedded within the kernel.
- Memory management
- Process management:
- ELF loader (static ELF only)
- Round robin scheduler
- Thread support
- fork() using Copy-On-Write
- Interrupt in userland API
- VFS
- Driver interface and communication
- Filesystem Driver interface (WIP)
- C library
- Provide syscall interface
- Driver library (libdriver)
- Easy implementation of drivers
- Only provide device information and operation, the library do everything else
- Filesystem In Userland library (libfiu)
- Easy filesystem implementation
- Filesystem drivers only provide filesystem operations and informations, the library do the rest
- Generic block cache implementation
- Drivers:
- ATA: (only disk no CDROM atm)
- Ext2
- Keyboard
- Video (x86 only using VBE Extended)
- TTY
- Other binaries:
- Shell, cat, ls, stat
zOS use Kconfig build system.
To create a new configuration file you can type make menuconfig or
make config.
Some system already have a default configuration file. To use it just type
make $TARGET_defconfig, where $TARGET is the target you want to build (for
example to build zos for i386-pc the target is i386_pc). All configuration
files are available in kernel/arch/$ARCH/configs (where $ARCH is the
architecture you want to build zos for).
Then, you just have to run make to create the image. If you want to create
the image and run it in qemu you can use make boot.
If you are building zOS for a different architecture than your host computer
be sure to set variables CROSS_COMPILE, ARCH and PLAT correctly.
If you want to see all available make targets just type make help.
See COPYING file