DragonFly BSD 6.0

DragonFly BSD

DragonFly 6.0 is out!: DragoFly 6.0 is tagged and ready for download. There's ISO images and of c... https://t.co/7ZnPzEjM7n
— DragonFly BSD (@dragonflybsd) May 10, 2021

A DragonFly BSD projekt kiadta a DragonFly BSD 6.0-s kiadását. Telepítéshez elérhetők ISO lemezképfájlok, illetve upgrade is végezhető meglevő telepítésen a kiadási oldalon található instrukciók alapján.

Főbb változások:

Security Issues

CVE-2010-040, fixed with an import of bzip2-1.0.6.
Meltdown hardware is detected during boot on Intel.

Kernel

vfs_cache updated.
Memory paging improved.
Callout API rewritten, and callout structure revamped.
Optimizations for code paths, cache lines.
Fix shared spin-lock starvation vs exclusive locks.
refactor kern_kevent(), sysclock_t to 64 bit.
Improved EFI framebuffer support.
acpi_thinkpad updated.
sysmouse has evdev support.
machdep.hack_efifb_probe_early sysctl removed.
clock_nanosleep(2), fexecve(2) added.
Fix mptable search issue triggered by bhyve
uname sysctl fixes (minor stack disclosure).
Add fcntl(F_GETPATH).
Add IP_SENDSRCADDR support
Add SO_PASSCRED.
Introduce kmalloc_obj facility to reduce memory fragmentation
Implement existential locks and type-stable feature to kmalloc_obj
Fix /dev/fd/N to clone the file pointer instead of sharing it, so seeks do not mess up the running process.
Cleanup archaic dup*() code-paths.
vkernel support disabled (see note at top)
Fix an unintended pmap_remove() that caused extra page faults.
Allow XSAVE support without AVX (some VMs do this)
Improve clock_settime() portability.
Fix an unintended memory disclosure in nanosleep().
Fix atime field for PTYs ('w' program idle time reporting).
finger - remove -T option and fix lastlogx logic, widen TTY field.
Misc fstype adjustments.
Fix a serious callout*() structural corruption bug.
Fix an overflow in the non-EFI bootloader code.
Fix a slow memory leak in the resource limit structure.
Fix a bug that could cause excessive VM pageout flushes.
Refactor ifsq_watchdog*() adding features to better-support queue flushes.
Fix atomicy issue in APIC EOI() and enable_icus().
Fix a multitude of rename races, particularly with directories.
Bring amdsmn in from FreeBSD.
Improve open() errno compatibility.
Make the DMAP significantly larger to accomodate EFI frame-bufffers that have been mapped to very high physical addresses (recent intel HP laptops).
Remove P_SWAPPEDOUT flag and non-functioning (non-applicable) code.
Detect fixed Intel meltdown hardware.
Bring in wsp(4) for Wellspring touchpads and Apple laptops.
Adjust devd to automatically recognize wireless network adapters and create wlanX interfaces for them.
Default serial port speed changed from 9600 to 115200. Long overdue.
Refactor sysclock_t from 32 to 64 bits.
Refactor kern_kevent() and fix a panic.
Fix an efivar panic.
Remove long-deprecated getdomainname(), setdomainname(), and uname() system calls. libc handles these a different way.
Fix rare vm_map_entry exhaustion panic.
Refactor vfs_timestamp() and change default to TSP_USEC.
Allow the 8254 timer to be forced-on for machines which do not support the LAPIC timer during deep-sleep.
Improve calculations for user/sys/intr/idle times.
Implement sysctl kern.tls_extra to help the userland rtld deal with late library loads.
Fix minor scheduler bugs.
Optimize the system call code path.
Major refactor of the vfs_cache code to improve performance and reliability.
Improve cache_fullpath().
Add raw flame_graph sampling support.
Reduce SMP contention during low-memory stress.
Recode the namecache mount transition cache to improve performance.
Reduce excessive rdrand harveesting that was seriously impacting performance on some CPUs (rdrand is microcoded and concurrent per-cpu use does not fully scale on many CPUs).
Major revamp of jail support and related options. Restructure the jail.* sysctl tree. Fix broken port-matching code, fix loopback interface handling.
Major advancement of VM topology. Primarily change over to an extent-based representation and remove pv_entry's for terminal PTEs. Not yet extended to pmap_enter().
Create new linker segments for e.g. read-mostly globals and other partitioning.

Filesystems

HAMMER2 - multiple cleanups and fixes
HAMMER2 - initial multi-volume support (multi-local disk, not networked multi-master)
HAMMER2 - Fix rename over empty directory issue.
HAMMER2 - Volume expansion support (hammer2 growfs directive added).
HAMMER2 - Update ctime upon chmod().
HAMMER2 - Fix a serious de-duplication bug.
TMPFS - Significant performance enhancements.
TMPFS - Fix two directory-entry races.
TMPFS - Fix a file truncation bug.
MSDOSFS: last sector read bug fixed.
non-GPL ext2 filesystem support added.
Refactor VOP_GETATTR_LITE() a bit for performance and portability.

Networking

Support added for newer Intel I219 ethernet controllers.
re(4) updated to Realtek's re-196.04, plus misc fixes.
em/emx(4) updated to Intel's em-7.7.8 with support for I219 LM15~19 and I219 V15~19.
bnx: Support 57764, 57767 and 57787.
bnx: A multitude of fixes made.
Add AF_ARP support.
Fix panic after route purge.
Fix numerous issues related to if_tap and if_tun cloning.
Attempt to fix the TCP ISN generator in the face of very fast port reuse.

Graphics

Multiple updates to the i915 driver.
DRM system now matches Linux 4.10.17.
Additional stability fixes to i915.

Driver updates

Serial port default speed is changed from 9600 to 115200.
amdsmn, amdtemp added.

Userland

autofs - fix absolute path when creating a mountpoint.
calendar - Rewrite to support Chinese and Julian calendars, various enhancements.
cpdup - Now uses lchmod(), lutimes(), and lchflags() when available.
cpdup - Use POSIX-defined timespec fields in a more portable manner.
disklabel - Add -x and -xx label expansion options.
ifconfig - Support filtering output by interface group.
ifconfig - Add -f options
ifconfig - Many miscellaneous enhancements.
pkill(1): Add option -T.
shutdown(8), reboot(8), printf(1), test(1), sh(1) updated to match FreeBSD.
games ching, gomoku, monop, and cgram imported from NetBSD.
Multiple ifconfig updates.
talk and talkd updated.
multiple updates to pciconf, ACPICA, and tzdata.
mounttmpfs - Add utility to help support /tmp and /var/run tmpfs's.
mountd - Turn on SO_REUSEADDR if a specific port is specified.
sh - resynchronize /bin/sh from FreeBSD w/ many fixes.
libefivar, efivar, uefisign synced with FreeBSD.
efidp, efibootmgr imported.
gpt - fix corruption in device_name string which caused gpt to sometimes fail.
gpt - Add 'gpt expand' directive
grdc - Improve scrolling timestamp precision.
pciconf - implement -e and -B options
od - Fix long double and long int format output and alignment.
killall now handles -h and -? properly.
top, vmstat, who, rwhod, uptime - fix uptime calculation.
daemon(8) understands log rotation.
stdbuf(1), getaddrinfo(1) and timeout(1) added.

Libraries

pthreads - add support for pthread_getname_np() and other features.
pthreads - reduce type pollution.
pthreads - respect RLIMIT_STACK for the main thread's stack.
c++ - Execute new atexit() destructors during _cxafinalize()
libaura fixes
libc - typeing fixes for ualarm() and usleep()
libc - Add unlocked versions of stdio functions
libc - Make signal names upper-case (posix compat).
libc - Refactor printf() (from FreeBSD)
libc - Provide __udivti3() for intermediate 128-bit calculations.
libc - Fix serious bug in nmalloc (malloc implementation).
libc - Use a fixed blocksize for the DB hash and btree methods, significantly improving performance.
libstdbuf - Import from FreeBSD
libutil - Add sockaddr_snprintf() from NetBSD
terminfo - Drop repeat-character capability from 'xterm-new'. Fixes mis-generated output in some situations that can lead to output corruption in nvi.

Miscellaneous

Many manual page fixes
Make the initrd subsystem more termcap-friendly
Remove the obsolete dev_mkdb()
Many fixes to the nrelease build.
Allow special characters in passwords created via the installer.

DSynth work

dsynth now allows ports-mgmt/pkg to be explicitly specified
dsynth now supports zstd
Report additional information in the build output.
Warn the user if the world and kernel are out of sync.
Set OPSYS according to detection or the profile config.
Now collects and presents meta-node statistics.
Now deletes obsolete packages on 'prepare-system'.
Log the portdir for all bulk-scan errors.
Fix count mismatch issues and binary pkg deletion issues.
dsynth now automatically runs itself at nice 10 by default.
tune max_load and other heuristics to handle a wider range of machine capabilities automatically.
retune the pkg dependency memory target heuristic.
Get ccache support working.
Fix a stack buffer in dequote() that was causing corruption.