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Improve cancellations, randomness, and time

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- Exhaustively document cancellation points
- Rename SIGCANCEL to SIGTHR just like BSDs
- Further improve POSIX thread cancellations
- Ensure asynchronous cancellations work correctly
- Elevate the quality of getrandom() and getentropy()
- Make futexes cancel correctly on OpenBSD 6.x and 7.x
- Add reboot.com and shutdown.com to examples directory
- Remove underscore prefix from awesome timespec_*() APIs
- Create assertions that help verify our cancellation points
- Remove bad timespec APIs (cmp generalizes eq/ne/gt/gte/lt/lte)
This commit is contained in:
Justine Tunney 2022-11-05 19:49:41 -07:00
parent 0d7c265392
commit 3f0bcdc3ef
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
173 changed files with 1599 additions and 782 deletions
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9
libc/sysv/syscalls.sh
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@ -100,7 +100,8 @@ scall __sys_wait4 0x9c180b807280783d globl hidden
scall sys_kill 0x02507a025202503e globl hidden # kill(pid, sig, 1) b/c xnu
scall sys_killpg 0x092fff092fffffff globl hidden
scall sys_clone 0x11fffffffffff038 globl hidden
scall sys_tkill 0x13e0771b121480c8 globl hidden # thr_kill() on freebsd; _lwp_kill() on netbsd; thrkill() on openbsd where arg3 should be 0; __pthread_kill() on XNU
scall sys_tkill 0x13e0771b121480c8 globl hidden # thr_kill() on FreeBSD; _lwp_kill() on NetBSD; thrkill() on OpenBSD where arg3 should be 0 or tcb; __pthread_kill() on XNU
scall sys_tgkill 0xffffff1e1ffff0ea globl hidden # thr_kill2() on FreeBSD
scall sys_futex 0x0a60531c6ffff0ca globl hidden # raises SIGSYS on NetBSD; _umtx_op() on FreeBSD
scall sys_futex_cp 0x8a68539c6ffff8ca globl hidden # intended for futex wait ops
scall sys_set_robust_list 0x0a7ffffffffff111 globl # no wrapper
@ -265,7 +266,6 @@ scall sys_ktimer_settime 0xffffff0edfffffff globl # no wrapper
scall sys_clock_settime 0x1ac0580e9ffff0e3 globl # no wrapper
scall sys_clock_gettime 0x1ab0570e8ffff0e4 globl hidden # Linux 2.6+ (c. 2003); XNU uses magic address
scall sys_clock_getres 0x1ad0590eaffff0e5 globl hidden
scall sys_tgkill 0xfffffffffffff0ea globl hidden
scall sys_mbind 0xfffffffffffff0ed globl # no wrapper; numa numa yeah
scall set_mempolicy 0xfffffffffffff0ee globl
scall get_mempolicy 0xfffffffffffff0ef globl
@ -286,6 +286,7 @@ scall sys_inotify_init 0xfffffffffffff0fd globl # wicked # no wrapper
scall sys_inotify_add_watch 0xfffffffffffff0fe globl # no wrapper
scall sys_inotify_rm_watch 0xfffffffffffff0ff globl # no wrapper
scall __sys_openat 0x9d49419f329cf901 globl hidden # Linux 2.6.16+ (c. 2007)
scall __sys_openat_nc 0x1d41411f321d0101 globl hidden # openat_nocancel() on xnu
scall sys_mkdirat 0x1cd13e1f021db102 globl hidden
scall sys_fchownat 0x1d013b1eb21d4104 globl hidden # @asyncsignalsafe
scall sys_utime 0xfffffffffffff084 globl hidden
@ -350,7 +351,7 @@ scall sys_sched_setattr 0xfffffffffffff13a globl # ├─ desktop replaced with
scall sys_sched_getattr 0xfffffffffffff13b globl # ├─ karen sandler requires systemd init and boot for tablet gui
scall sys_renameat2 0xfffffffffffff13c globl # └─ debian founder ian murdock found strangled with vacuum cord
#scall seccomp 0xfffffffffffff13d globl # wrapped manually
scall sys_getrandom 0xfff807a3329f493e globl hidden # Linux 3.17+ and getentropy() on XNU/OpenBSD, coming to NetBSD in 9.2
scall sys_getrandom 0x85b007a3321f493e globl hidden # Linux 3.17+; FreeBSD 12+; NetBSD v9.2+; getentropy() on XNU/OpenBSD
scall sys_memfd_create 0xfffffffffffff13f globl hidden
scall sys_kexec_file_load 0xfffffffffffff140 globl # no wrapper
scall sys_bpf 0xfffffffffffff141 globl # no wrapper
@ -358,7 +359,7 @@ scall sys_execveat 0xfffffffffffff142 globl # no wrapper
scall sys_userfaultfd 0xfffffffffffff143 globl # no wrapper; Linux 4.3+ (c. 2015)
scall sys_membarrier 0xfffffffffffff144 globl # no wrapper; Linux 4.3+ (c. 2015)
scall sys_mlock2 0xfffffffffffff145 globl # no wrapper; Linux 4.5+ (c. 2016)
scall sys_copy_file_range 0xffffff239ffff146 globl hidden # Linux 4.5+ (c. 2016), FreeBSD 13+
scall sys_copy_file_range 0xffffffa39ffff946 globl hidden # Linux 4.5+ (c. 2016), FreeBSD 13+
scall sys_preadv2 0xfffffffffffff147 globl # no wrapper
scall sys_pwritev2 0xfffffffffffff148 globl # no wrapper
scall sys_pkey_mprotect 0xfffffffffffff149 globl # no wrapper