git: 870e197d52c1 - main - Add quirks for Linux ABI signals handling

[Konstantin Belousov]

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=870e197d52c1cb8c3ed6d04ddae34dcae57cb657

commit 870e197d52c1cb8c3ed6d04ddae34dcae57cb657
Author:     Konstantin Belousov <kib at FreeBSD.org>
AuthorDate: 2021-06-05 18:18:21 +0000
Commit:     Konstantin Belousov <kib at FreeBSD.org>
CommitDate: 2021-06-15 23:01:35 +0000

    Add quirks for Linux ABI signals handling
    
    Require queueing of the signals with default action, and disable
    dequeueing SIGCHLD on wait for live process.
    
    Reported and tested by: dchagin
    Reviewed by:    dchagin, markj
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
    Differential revision:  https://reviews.freebsd.org/D30675
---
 sys/amd64/linux/linux_sysvec.c     | 3 ++-
 sys/amd64/linux32/linux32_sysvec.c | 3 ++-
 sys/arm64/linux/linux_sysvec.c     | 3 ++-
 sys/i386/linux/linux_sysvec.c      | 6 ++++--
 4 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/sys/amd64/linux/linux_sysvec.c b/sys/amd64/linux/linux_sysvec.c
index 3eab9126f192..66e9fec46e60 100644
--- a/sys/amd64/linux/linux_sysvec.c
+++ b/sys/amd64/linux/linux_sysvec.c
@@ -752,7 +752,8 @@ struct sysentvec elf_linux_sysvec = {
 	.sv_setregs	= linux_exec_setregs,
 	.sv_fixlimit	= NULL,
 	.sv_maxssiz	= NULL,
-	.sv_flags	= SV_ABI_LINUX | SV_LP64 | SV_SHP,
+	.sv_flags	= SV_ABI_LINUX | SV_LP64 | SV_SHP | SV_SIG_DISCIGN |
+	    SV_SIG_WAITNDQ,
 	.sv_set_syscall_retval = linux_set_syscall_retval,
 	.sv_fetch_syscall_args = linux_fetch_syscall_args,
 	.sv_syscallnames = NULL,
diff --git a/sys/amd64/linux32/linux32_sysvec.c b/sys/amd64/linux32/linux32_sysvec.c
index b950c00eba1d..4b492c110556 100644
--- a/sys/amd64/linux32/linux32_sysvec.c
+++ b/sys/amd64/linux32/linux32_sysvec.c
@@ -919,7 +919,8 @@ struct sysentvec elf_linux_sysvec = {
 	.sv_setregs	= linux_exec_setregs,
 	.sv_fixlimit	= linux32_fixlimit,
 	.sv_maxssiz	= &linux32_maxssiz,
-	.sv_flags	= SV_ABI_LINUX | SV_ILP32 | SV_IA32 | SV_SHP,
+	.sv_flags	= SV_ABI_LINUX | SV_ILP32 | SV_IA32 | SV_SHP |
+	    SV_SIG_DISCIGN | SV_SIG_WAITNDQ,
 	.sv_set_syscall_retval = linux32_set_syscall_retval,
 	.sv_fetch_syscall_args = linux32_fetch_syscall_args,
 	.sv_syscallnames = NULL,
diff --git a/sys/arm64/linux/linux_sysvec.c b/sys/arm64/linux/linux_sysvec.c
index 57abdc6fd691..177f582ce11f 100644
--- a/sys/arm64/linux/linux_sysvec.c
+++ b/sys/arm64/linux/linux_sysvec.c
@@ -429,7 +429,8 @@ struct sysentvec elf_linux_sysvec = {
 	.sv_setregs	= linux_exec_setregs,
 	.sv_fixlimit	= NULL,
 	.sv_maxssiz	= NULL,
-	.sv_flags	= SV_ABI_LINUX | SV_LP64 | SV_SHP,
+	.sv_flags	= SV_ABI_LINUX | SV_LP64 | SV_SHP | SV_SIG_DISCIGN |
+	    SV_SIG_WAITNDQ,
 	.sv_set_syscall_retval = linux_set_syscall_retval,
 	.sv_fetch_syscall_args = linux_fetch_syscall_args,
 	.sv_syscallnames = NULL,
diff --git a/sys/i386/linux/linux_sysvec.c b/sys/i386/linux/linux_sysvec.c
index 9cc1a723ab55..c94f0824edca 100644
--- a/sys/i386/linux/linux_sysvec.c
+++ b/sys/i386/linux/linux_sysvec.c
@@ -859,7 +859,8 @@ struct sysentvec linux_sysvec = {
 	.sv_setregs	= linux_exec_setregs,
 	.sv_fixlimit	= NULL,
 	.sv_maxssiz	= NULL,
-	.sv_flags	= SV_ABI_LINUX | SV_AOUT | SV_IA32 | SV_ILP32,
+	.sv_flags	= SV_ABI_LINUX | SV_AOUT | SV_IA32 | SV_ILP32 |
+	    SV_SIG_DISCIGN | SV_SIG_WAITNDQ,
 	.sv_set_syscall_retval = linux_set_syscall_retval,
 	.sv_fetch_syscall_args = linux_fetch_syscall_args,
 	.sv_syscallnames = NULL,
@@ -897,7 +898,8 @@ struct sysentvec elf_linux_sysvec = {
 	.sv_setregs	= linux_exec_setregs,
 	.sv_fixlimit	= NULL,
 	.sv_maxssiz	= NULL,
-	.sv_flags	= SV_ABI_LINUX | SV_IA32 | SV_ILP32 | SV_SHP,
+	.sv_flags	= SV_ABI_LINUX | SV_IA32 | SV_ILP32 | SV_SHP |
+	    SV_SIG_DISCIGN | SV_SIG_WAITNDQ,
 	.sv_set_syscall_retval = linux_set_syscall_retval,
 	.sv_fetch_syscall_args = linux_fetch_syscall_args,
 	.sv_syscallnames = NULL,