v0.13.0

We are proud to announce the latest version of Unikraft, v0.13.0 (Atlas)! Along with many fixes, this release comes with a bunch of new features that are worth your attention!

This release includes a breaking change which affects output unikernel binary name. See native Firecracker support for details.

Here is the full updates list:

🚀 New Features

Update parser in lib/uklibparam (#882) by Simon Kuenzer
Support escaping of quotes in lib/ukargparse (#893) by Simon Kuenzer
Add support for environment variables in lib/posix-environ (#868) by Simon Kuenzer
Support for environment variables with lib/posix-environ in Musl (lib-musl#43) by Simon Kuenzer
Add README.md file for 9pfs in lib/9pfs (#837) by Delia Pavel
Extend prsyscall in lib/syscall_shim (print structs, …) (#836) by Marc Rittinghaus
Dynamically allocate struct mount paths (#826) by Dinh Ngoc Tu
Port the testsuite to the new scheduling APIs in lib/posix-futex/test (#809) by Nour-eddine Taleb
Add per-lcpu variable definition (#784) by Andra Paraschiv
Add README.md file in lib/vfscore (#780) by Radu Nichita
Add README.md file in lib/nolibc (#778) by Alexandru Calciu
Implement a more robust compiler detection in build (#774) by Marco Schlumpp
Add Codacy code quality status badge to README.md in doc (#764) by Aryan Verma
Firecracker boot protocol support in plat/kvm (#760) by Marco Schlumpp
Implement subset of FUTEX_WAIT_BITSET in lib/posix-futex (#758) by Marco Schlumpp
Add an empty implementation of ioctl to eventfd in lib/posix-event (#756) by Marco Schlumpp
Add syscall alias to uk_syscall in lib/syscall_shim (#755) by Marco Schlumpp
Implement the EFD_NONBLOCK flag for eventfd in lib/posix-event (#754) by Marco Schlumpp
Merge .gcc_except_tables in plat/common (#753) by Marco Schlumpp
Compile all source files for ISR context in lib/ukvmem (#751) by Marco Schlumpp
Use -ffreestanding compiler flag in lib/nolibc (#740) by Răzvan Deaconescu
Use 48-bit virtual addressing for PARange >= 52 in plat/kvm/arm (#729) by Eduard Vintilă
Improve unwind information for x86 architecture in plat/x86 (#700) by Marco Schlumpp
Improve nolibc compatibility in lib/nolibc (#627) by Marco Schlumpp
Add synchronization mechanisms (#476) by Sairaj Kodilkar
Update description of Musl support in README (lib-musl#49) by Răzvan Deaconescu
Update newlib to the latest Unikraft version (#28) by Eduard Vintilă
Update pthread-embedded to the latest Unikraft version (#11) by Eduard Vintilă
Add linux definitions patch (#34) by Teodor Țeugea
Add SOCK_NONBLOCK to accept4() and socket() (#33) by Marc Rittinghaus
Improve README.md for app-elfloader (app-elfloader#7) by Simon Kuenzer
VFS and native dynamic loader support (app-elfloader#17) by Simon Kuenzer

🐛 Bug Fixes & Improvements

Add semicolon to DPRINTF macro in lib/vfscore (#890) by Răzvan Deaconescu
Initialize lists for stdio_vnode in lib/vfscore (#889) by Răzvan Deaconescu
Avoid recursive locking in sys_rename in lib/vfscore (#888) by Marc Rittinghaus
Add missing errno include in lib/ukswrand (#887) by Marc Rittinghaus
Fix I/O error on fsync with 9P2000.u in lib/uk9p, lib/9pfs (#886) by Marc Rittinghaus
Start TID numbering from 1 in lib/posix-process (#885) by Florin Postolache
Fix file path resolution for 9pfs setup in lib/vfscore (#883) by Andra Paraschiv
Disable compiler control flow protection in build (#881) by Andrei Tătar
Modify pointer comparison in lib/{nolibc,isrlib} (#880) by Maria Sfîrăială
Add additional recognised Git trailers to checkpatch in support/scripts (#879) by Alexander Jung
Fix memory region setup and issue #766 in plat/linuxu (#878) by Sergiu Moga
Fix register names for clang in plat/kvm/x86 (#877) by Ștefan Jumărea
fs0 for automounting 9pfs in lib/vfscore (#875) by Simon Kuenzer
Handle FIONBIO command in pipe_ioctl() in lib/vfscore (#874) by Eduard Vintilă
Fix Python ascii codec can’t decode byte in support/scripts (#873) by Florin Postolache
Change vnops to take constant strings in lib/vfscore (#866) by Marc Rittinghaus
Fix dup, utimensat, and futimens in lib/vfscore (#865) by Marc Rittinghaus
Add ukarch_fetch_sub in uk/arch (#864) by Răzvan Vîrtan
Fix ioctl() on device files (+ cleanup) in /lib/devfs, /lib/ukswran (#855) by Marc Rittinghaus
Fix file flags for O_NONBLOCK and O_ASYNC (#850) by Marc Rittinghaus
Remove clone3 syscall in lib/posix-process (#847) by Teodor Țeugea
Apply LIBxxx_COMPFLAGS{,-y} to C++ too in build (#845) by Dinh Ngoc Tu
Fix cast to invalid type in 9p.c (#844) by Hugo Lefeuvre
Fix potential free(NULL) in lib/vfscore (#843) by Hugo Lefeuvre
Use page alignment macros everywhere (#842) by Hugo Lefeuvre
Remove unreachable NULL checks in ukalloc (#840) by Hugo Lefeuvre
Fix unchecked uk_palloc value in xen/x86/mm.c (#839) by Hugo Lefeuvre
Various fixes for application compatibility (#834) by Marc Rittinghaus
Fix compilation and loading of linuxu images in plat/linuxu (#833) by Marco Schlumpp
Allow non-writable shared file mappings in lib/ukvmem (#832) by Cosmin Vancea
Fix symlink support for 9pfs in 9pfs, vfscore (#830) by Andra Paraschiv
Fix wrong type for the st_nlink field inside struct stat in lib/nolibc (#829) by Cosmin Vancea
Fix build warnings in lib/posix-process (#820) by Konstantinos Koukopoulos
Force update UK_CONFIG in build/Makefile (#817) by Tianyi Liu
Fix for Issue #730 in lib/uksglist (#813) by Vineeth Krishna M
Handle a full tracing buffer correctly in lib/ukdebug (#810) by Marco Schlumpp
Fix issues in FDT functions in plat/drivers/ofw (#805) by Eduard Vintilă
Detect if gawk can be used instead of awk in build (#803) by Simon Kuenzer
Add a simple test for mmap and munmap in lib/ukmmap (#802) by Kha Dinh
Remove warnings related to timespec in lib/nolibc (#800) by Takeru Wada
Fix posix-mmap errno issue (#799) by Teodor Țeugea
Update uio_offset and uio_resid on successful reads in lib/posix-event (#798) by Eduard Vintilă
Add comments to 9pfs.h file (#794) by Delia Pavel
Change the SECINFO_EXP regex to be more permissive in support/scripts (#792) by Florin Postolache
Fix double fault and failing mmap (#790) by Marc Rittinghaus
Add write-combined page entry attribute in plat/x86 (#788) by Marco Schlumpp
Ensure the .eh_frame section stays in plat/common (#776) by Marco Schlumpp
Fix type of revents pointer in lib/posix-event (#775) by Marco Schlumpp
Change unhandled IRQ message to a tracepoint in plat/kvm (#768) by Marco Schlumpp
Fix interrupt flag check in drivers/virtio (#761) by Marco Schlumpp
Ensure the ifpages metadata does not break any alignments in lib/ukalloc (#757) by Marco Schlumpp
Disable default LIBMUSL_COMPLEX in Config.uk (lib-musl#47) by Răzvan Deaconescu
Fix ioctl signature in function definition in patches (lib-musl#44) by Ștefan Jumărea
Fix ioctl signature (lib-musl#42) by Marc Rittinghaus
Various fixes (lib-musl#41) by Marco Schlumpp
Add option to disable character maps in locale (lib-musl#40) by Dinh Ngoc Tu
Apply -ffreestanding for the Musl source code (lib-musl#35) by Marco Schlumpp
Use -ffreestanding as internal build option in Makefile.uk (lib-newlib#33) by Răzvan Deaconescu
Add *_OK flags in fcntl.h header in include (#32) by Ștefan Jumărea
Return address from previous brk() context on follow-up request (#15) by Andra Paraschiv
Fix argv parsing (app-elfloader#13) by Cosmin Vancea
Align the stack pointer at a 16-byte boundary at function calls (#9) by Cosmin Vancea