v0.11.0

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