v0.11.0 (Janus)

We are proud to announce the latest version of Unikraft, v0.11.0 (Janus)! The most important asset of this release is the long awaited musl support. Besides this, we introduce many new improvements, including critical bug fixes, improved stability and new features. To summarise:

🚀 New Features#

• Update the scheduling API and thread support. This feature consists of multiple contributions by Simon Kuenzer
  • Re-factor context, extended context, and TLS/TCB handling in arch/libcontext (#535)
  • New scheduling API in lib/uksched (#564)
  • Change occurences of uk_thread_tcb_fini to uk_thread_uktcb_fini in uksched (#660) by Eduard Vintilă
• Clone system call support. This feature consists of multiple contributions by Simon Kuenzer
  • Support for clone implementation in lib/syscall_shim (#565)
  • Implement clone system call in lib/posix-process (#566)
• Provide support for Musl as standard C library for Unikraft:
  • Solve redefining conflicts in uktime (#454) by Dragoș Argint
  • Add UK_LIBC_SYSCALLS guard around send() and recv() in posix-socket (#637) by Răzvan Deaconescu
  • Replace access and stat with Unikraft syscalls in vfscore (#636) by Maria Sfîrăială
  • Add syscalls in legacy_syscalls.h in syscall_shim (#634) by Maria Sfîrăială
  • Change pipe() call to uk_syscall_r_pipe() in vfscore (#633) by Eduard Vintilă
  • Add threading support in musl (#9) by Dragoș Argint
  • Add script for generating Makefile.uk.musl.* entries (#8) by Robert Kuban
  • Update aarch64 makefiles (#7) by Robert Kuban
  • Add patches for aarch64 (#6) by Robert Kuban
  • Re-enable wrappers (#5) by Dragoș Argint
  • Update Makefile for LWIP integration (#19) by Răzvan Deaconescu
  • Add syscall wrapper for getrandom (#25) by Michalis Pappas
  • Include tgmath.h header (#24) by Florin Postolache
  • Add wait.c build dependency (#23) by Răzvan Deaconescu
  • Add sysexits.h include dependency (#22) by Răzvan Deaconescu
  • Add sources for POSIX_USER functions (#20) by Ștefan Jumărea
  • Always include the uname sources (#18) by Ștefan Jumărea
  • In lib-lwip, include fcntl.h and sys/ioctl.h in sockets.c (#27) by Răzvan Deaconescu
  • In lib-lwip, remove ip6addr-related files (#25) by Răzvan Deaconescu
  • Add Musl support for LWIP (#23) by Răzvan Deaconescu
  • In lib-lwip, add uk/essentials.h as include dependency (#22) by Răzvan Deaconescu
  • Adopt to refactored scheduling API in LWIP (lib/uksched) (#19) by Simon Kuenzer
  • In lib-libcxx, add patch with signature for vasprintf (#23) by Maria Sfîrăială
  • Add libcxx math.h header (#22) by Ștefan Jumărea
  • Include the first stddef header file in libcxx (#18) by Ștefan Jumărea
  • In lib-libcxx, remove multiple definitions when using musl (#17) by Ștefan Jumărea
  • In lib-libcxx, define strtoll_l and strtoull_l in locale (#14) by Ștefan Jumărea
  • Add support headers for Musl in LIBCXX (#10) by Ștefan Jumărea
  • In lib-libcxx, add location of features.h file from Musl (#9) by Ștefan Jumărea
  • Add support (in kraft.yaml) for app-helloworld-cpp (#8) by Răzvan Deaconescu
  • Add support (in kraft.yaml) for app-nginx (#7 and #8) by Răzvan Deaconescu
  • Add support (in kraft.yaml) for app-redis (#11) by Răzvan Deaconescu
  • Add support (in kraft.yaml) for app-sqlite (#5) by Răzvan Deaconescu
  • Add support (in kraft.yaml) for app-python3 (#8) by Răzvan Deaconescu
  • Add support (in kraft.yaml) for app-micropython (#3) by Răzvan Deaconescu
• Implement SGIs in GIC-v3 (#471) by Răzvan Vîrtan
• Add Armv8 MTE (Memory Tagging Extensions) (#458) by Michalis Pappas
• Introduce ukarch_random and add implementation for arm64 (FEAT_RNG) (#434) by Michalis Pappas
• New getdents64 system call (#672) by Răzvan Deaconescu

🐛 Bug Fixes & Improvements#

• Use -Wno-cast-function-type for GCC >= 8 in syscall_shim (#677) by Răzvan Deaconescu
• Fix getdents count unit in vfscore (#670) by Tu Dinh Ngoc
• Fix stdio.c build warning in vfscore (#667) by Răzvan Deaconescu
• Change the printing function from printf to _uk_printk in uktest (#662) by Florin Postolache
• Fix implicit declaration of __lxstat in vfscore (#661) by Eduard Vintilă
• Fix typecast warnings in posix-process (#657) by Răzvan Deaconescu
• Change argument type for posix_socket_close in posix-socket (#647) by Florin Postolache
• Fix 9pfs scatter/gather I/O in 9pfs (#639) by Eduard Vintilă
• Fix uninitialized variable in vfscore (#551) by Maria Moșneag
• Define LVLC_CALLER in case CONFIG_LIBUKDEBUG_ANSI_COLOR is not set in ukdebug (#559) by Hamza Chandad
• Fix warning undeclared function halt() in arm/lcpu.c (#540) by Julian Hartmer
• Fix warning in year_to_secs in uktime (#534) by Marc Rittinghaus
• Fix buffer length argument when calling virtio_cread_bytes_many in virtio_pci (#519) by Eduard Vintilă
• Use mutable strings in tests in ukargparse (#439) by Michalis Pappas
• Insert .uk_testtab after data section for uktest (#606) by Aleksandr Iashchenko
• Make LIBUKTEST_TEST_MYSELF option enable/disable self tests in uktest (#602) by Florin Postolache
• Add asm flag for compilation with clang on x86 (#560) by Maria Sfîrăială
• Add clone rule to the build system (#553) by Florin Postolache
• Update checkpatch configuration and helper script (#651) by Simon Kuenzer
• Add support for long application directory paths when building (#619) by Robert Kuban
• Add RLIMIT_DATA resource for prlimit64 in posix-process (#531) by Alex Apostolescu
• In lib-musl, use function declaration for getdents64 (#31) by Răzvan Deaconescu
• In lib-musl, add patch to fix definition of environ variable (#30) by Răzvan Deaconescu
• In lib-musl, avoid bug in uk_syscall_set_tid_address() (#29) by Dragoș Argint
• In lib-musl, use -Wno-cast-function-type for GCC >= 8 (#28) by Răzvan Deaconescu
• In lib-musl, remove include directory from clean list (#17) by Robert Kuban
• In lib-musl, introduce depedency to enable parallel build (#15) by Robert Kuban
• In lib-musl, enable FPSIMD support on ARM64 (#14) by Răzvan Vîrtan
• In lib-musl, hide internal headers (#13) by Robert Kuban
• In lib-musl, patch CVE-2020-28928 (#11) by Robert Kuban
• In lib-musl, comment macros to stop using VDSO (#10) by Florin Postolache
• In lib-lwip, use -Wno-cast-function-type for GCC >= 8 (#28) by Răzvan Deaconescu

A big thank you also to all those who helped in the review process: Adina Smeu, Alexander Jung, Cezar Crăciunoiu, Dragoș Argint, Eduard Vintilă, Marc Rittinghaus, Maria Sfiraiala, Răzvan Deaconescu, Răzvan Vîrtan, Renê de Souza Pinto, Robert Kuban, Sergiu Moga, Simon Kuenzer, Ștefan Jumărea, Vlad Bădoiu, Florin Postolache, Delia Pavel and Marco Schlumpp.