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Make signal handling work well across platforms

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- Fix sigsuspend() on XNU
- Fix strsignal() on non-Linux
- Add unit tests for strsignal()
- Add unit tests for setitimer()
- Add unit tests for sigsuspend()
- Rewrite setitimer() for New Technology
- Rewrite nanosleep() for New Technology
- Polyfill SIGALRM on the New Technology
- select(0,0,0,0) on NT now calls pause()
- Remove some NTDLL calls that aren't needed
- Polyfill SA_NOCLDWAIT on the New Technology
- Polyfill SA_RESETHAND on the New Technology
- Polyfill sigprocmask() on the New Technology
- Polyfill SIGCHLD+SIG_IGN on the New Technology
- Polyfill SA_RESTART masking on the New Technology
- Deliver console signals from main thread on New Technology
- Document SA_RESTART behavior w/ @sarestartable / @norestart
- System call trace in MODE=dbg now prints inherited FDs and signal mask
This commit is contained in:
Justine Tunney 2022-03-25 07:11:44 -07:00
parent 3b9e66ecba
commit 072e1d2910
82 changed files with 1388 additions and 450 deletions
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10
libc/sysv/syscalls.sh
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@ -49,7 +49,7 @@ scall sys_msync 0x115100041204101a globl hidden
scall sys_mprotect 0x04a04a04a204a00a globl hidden
scall __sys_munmap 0x049049049204900b globl hidden
scall sys_sigaction 0x15402e1a0202e00d globl hidden # rt_sigaction on Lunix; it's complicated on NetBSD
scall sys_sigprocmask 0x125030154203000e globl hidden # a.k.a. rt_sigprocmask, openbsd:byvalue
scall sys_sigprocmask 0x125030154214900e globl hidden # a.k.a. rt_sigprocmask, openbsd:byvalue, a.k.a. pthread_sigmask
scall sys_ioctl 0x0360360362036010 globl hidden
scall sys_pread 0x0ad0ad1db2099011 globl hidden # a.k.a. pread64; netbsd+openbsd:pad
scall sys_pwrite 0x0ae0ae1dc209a012 globl hidden # a.k.a. pwrite64; netbsd+openbsd:pad
@ -162,8 +162,8 @@ scall sys_setresuid 0xfff11a137ffff075 globl hidden # polyfilled for xnu
scall sys_setresgid 0xfff11c138ffff077 globl hidden # polyfilled for xnu
scall getresuid 0xfff119168ffff076 globl # semantics aren't well-defined
scall getresgid 0xfff11b169ffff078 globl # semantics aren't well-defined
scall sigpending 0x124034034203407f globl # rt_sigpending on linux
scall sys_sigsuspend 0x12606f155206f082 globl hidden # openbsd:byvalue
scall sigpending 0x124034034203407f globl # a.k.a. rt_sigpending on linux
scall sys_sigsuspend 0x12606f155206f082 globl hidden # a.k.a. rt_sigsuspend on Linux; openbsd:byvalue, sigsuspend_nocancel on XNU
scall sys_sigaltstack 0x1191200352035083 globl hidden
scall sys_mknod 0x1c200e00e200e085 globl hidden
scall mknodat 0x1cc14022fffff103 globl # FreeBSD 12+
@ -193,7 +193,7 @@ scall capget 0xfffffffffffff07d globl
scall capset 0xfffffffffffff07e globl
scall sigtimedwait 0xffffff159ffff080 globl
scall sys_sigqueue 0xffffff1c8fffffff globl
scall sys_sigqueueinfo 0x0f5ffffffffff081 globl # rt_sigqueueinfo on linux
scall sys_sigqueueinfo 0x0f5ffffffffff081 globl # a.k.a. rt_sigqueueinfo on linux
scall personality 0xfffffffffffff087 globl
scall ustat 0xfffffffffffff088 globl
scall sysfs 0xfffffffffffff08b globl
@ -246,7 +246,7 @@ scall lookup_dcookie 0xfffffffffffff0d4 globl
scall sys_epoll_create 0xfffffffffffff0d5 globl
scall sys_epoll_wait 0xfffffffffffff0e8 globl
scall sys_epoll_ctl 0xfffffffffffff0e9 globl
scall getdents 0x18606311020c40d9 globl hidden # four args b/c xnu, getdirentries on xnu, 32-bit on xnu/freebsd, getdents64 on linux, 64-bit on openbsd
scall getdents 0x18606311020c40d9 globl hidden # four args b/c xnu, getdirentries on xnu, 32-bit on xnu/freebsd, a.k.a. getdents64 on linux, 64-bit on openbsd
scall set_tid_address 0xfffffffffffff0da globl
scall restart_syscall 0xfffffffffffff0db globl
scall semtimedop 0xfffffffffffff0dc globl