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[src/netbsd-9]: src/sys Pull up following revision(s) (requested by pgoyette ...
details: https://anonhg.NetBSD.org/src/rev/ef17de345c9c
branches: netbsd-9
changeset: 460960:ef17de345c9c
user: martin <martin%NetBSD.org@localhost>
date: Mon Nov 11 17:11:07 2019 +0000
description:
Pull up following revision(s) (requested by pgoyette in ticket #413):
sys/kern/kern_core.c: revision 1.27 (patch)
sys/kern/kern_sig.c: revision 1.377 (patch)
sys/kern/kern_sig.c: revision 1.378 (patch)
sys/kern/sys_sig.c: revision 1.50
sys/kern/sys_ptrace_common.c: revision 1.70
sys/kern/compat_stub.c: revision 1.16
sys/compat/common/kern_sig_16.c: revision 1.4
sys/kern/compat_stub.c: revision 1.17
sys/sys/compat_stub.h: revision 1.20
sys/sys/signalvar.h: revision 1.98
sys/sys/compat_stub.h: revision 1.21
sys/sys/signalvar.h: revision 1.99
Convert the sendsig_sigcontext_16 function pointer to use the new
compat_hook mechanism.
XXX Despite being a kernel<-->module abi change, this should be
XXX pulled up to -9
-
Convert the coredump_vec modular function pointer to use the new
compat_hook mechanism.
XXX Should be pulled up to -9 despite the kernel <--> module ABI
XXX change.
diffstat:
sys/compat/common/kern_sig_16.c | 12 +++++++-----
sys/kern/compat_stub.c | 12 +++++++++++-
sys/kern/kern_core.c | 12 +++++++-----
sys/kern/kern_sig.c | 17 ++++++-----------
sys/kern/sys_ptrace_common.c | 7 ++++---
sys/kern/sys_sig.c | 13 ++++++-------
sys/sys/compat_stub.h | 16 +++++++++++++++-
sys/sys/signalvar.h | 9 +--------
8 files changed, 57 insertions(+), 41 deletions(-)
diffs (truncated from 317 to 300 lines):
diff -r 0520ccf0783c -r ef17de345c9c sys/compat/common/kern_sig_16.c
--- a/sys/compat/common/kern_sig_16.c Sun Nov 10 13:26:20 2019 +0000
+++ b/sys/compat/common/kern_sig_16.c Mon Nov 11 17:11:07 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_sig_16.c,v 1.3 2019/01/27 02:08:39 pgoyette Exp $ */
+/* $NetBSD: kern_sig_16.c,v 1.3.4.1 2019/11/11 17:11:07 martin Exp $ */
/*-
* Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_sig_16.c,v 1.3 2019/01/27 02:08:39 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_sig_16.c,v 1.3.4.1 2019/11/11 17:11:07 martin Exp $");
#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
@@ -84,6 +84,7 @@
#include <sys/kauth.h>
#include <sys/wait.h>
#include <sys/kmem.h>
+#include <sys/compat_stub.h>
#include <uvm/uvm_object.h>
#include <uvm/uvm_prot.h>
@@ -155,8 +156,8 @@
emul_netbsd.e_esigcode = esigcode;
emul_netbsd.e_sigobject = &emul_netbsd_object;
rw_exit(&exec_lock);
- KASSERT(sendsig_sigcontext_vec == NULL);
- sendsig_sigcontext_vec = sendsig_sigcontext;
+ MODULE_HOOK_SET(sendsig_sigcontext_16_hook, "sndsig16",
+ sendsig_sigcontext);
#endif
return 0;
@@ -188,7 +189,6 @@
syscall_establish(NULL, kern_sig_16_syscalls);
return EBUSY;
}
- sendsig_sigcontext_vec = NULL;
#if defined(COMPAT_SIGCONTEXT)
/*
@@ -204,6 +204,8 @@
emul_netbsd.e_esigcode = NULL;
emul_netbsd.e_sigobject = NULL;
rw_exit(&exec_lock);
+
+ MODULE_HOOK_UNSET(sendsig_sigcontext_16_hook);
#endif
return 0;
}
diff -r 0520ccf0783c -r ef17de345c9c sys/kern/compat_stub.c
--- a/sys/kern/compat_stub.c Sun Nov 10 13:26:20 2019 +0000
+++ b/sys/kern/compat_stub.c Mon Nov 11 17:11:07 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: compat_stub.c,v 1.15 2019/07/20 18:23:05 christos Exp $ */
+/* $NetBSD: compat_stub.c,v 1.15.2.1 2019/11/11 17:11:07 martin Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -274,3 +274,13 @@
*/
struct netbsd32_machine32_hook_t netbsd32_machine32_hook;
struct netbsd32_reg_validate_hook_t netbsd32_reg_validate_hook;
+
+/*
+ * Hook for sendsig_sigcontext_16
+ */
+struct sendsig_sigcontext_16_hook_t sendsig_sigcontext_16_hook;
+
+/*
+ * Hook for coredumps
+ */
+struct coredump_hook_t coredump_hook;
diff -r 0520ccf0783c -r ef17de345c9c sys/kern/kern_core.c
--- a/sys/kern/kern_core.c Sun Nov 10 13:26:20 2019 +0000
+++ b/sys/kern/kern_core.c Mon Nov 11 17:11:07 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_core.c,v 1.24 2016/07/07 06:55:43 msaitoh Exp $ */
+/* $NetBSD: kern_core.c,v 1.24.22.1 2019/11/11 17:11:07 martin Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
@@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_core.c,v 1.24 2016/07/07 06:55:43 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_core.c,v 1.24.22.1 2019/11/11 17:11:07 martin Exp $");
#include <sys/param.h>
#include <sys/vnode.h>
@@ -50,6 +50,7 @@
#include <sys/filedesc.h>
#include <sys/kauth.h>
#include <sys/module.h>
+#include <sys/compat_stub.h>
MODULE(MODULE_CLASS_MISC, coredump, NULL);
@@ -69,16 +70,17 @@
switch (cmd) {
case MODULE_CMD_INIT:
- coredump_vec = coredump;
+ MODULE_HOOK_SET(coredump_hook, "coredump", coredump);
return 0;
case MODULE_CMD_FINI:
/*
- * In theory we don't need to patch this, as the various
+ * In theory we don't need to UNSET this, as the various
* exec formats depend on this module. If this module has
* no references, and so can be unloaded, no user programs
* can be running and so nothing can call *coredump_vec.
*/
- coredump_vec = (int (*)(struct lwp *, const char *))enosys;
+
+ MODULE_HOOK_UNSET(coredump_hook);
return 0;
default:
return ENOTTY;
diff -r 0520ccf0783c -r ef17de345c9c sys/kern/kern_sig.c
--- a/sys/kern/kern_sig.c Sun Nov 10 13:26:20 2019 +0000
+++ b/sys/kern/kern_sig.c Mon Nov 11 17:11:07 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_sig.c,v 1.364.2.8 2019/10/23 19:25:39 martin Exp $ */
+/* $NetBSD: kern_sig.c,v 1.364.2.9 2019/11/11 17:11:07 martin Exp $ */
/*-
* Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -70,7 +70,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_sig.c,v 1.364.2.8 2019/10/23 19:25:39 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_sig.c,v 1.364.2.9 2019/11/11 17:11:07 martin Exp $");
#include "opt_ptrace.h"
#include "opt_dtrace.h"
@@ -100,6 +100,7 @@
#include <sys/cpu.h>
#include <sys/module.h>
#include <sys/sdt.h>
+#include <sys/compat_stub.h>
#ifdef PAX_SEGVGUARD
#include <sys/pax.h>
@@ -131,10 +132,6 @@
static void sigacts_poolpage_free(struct pool *, void *);
static void *sigacts_poolpage_alloc(struct pool *, int);
-void (*sendsig_sigcontext_vec)(const struct ksiginfo *, const sigset_t *);
-int (*coredump_vec)(struct lwp *, const char *) =
- (int (*)(struct lwp *, const char *))enosys;
-
/*
* DTrace SDT provider definitions
*/
@@ -2145,10 +2142,8 @@
case 0:
case 1:
/* Compat for 1.6 and earlier. */
- if (sendsig_sigcontext_vec == NULL) {
- break;
- }
- (*sendsig_sigcontext_vec)(ksi, mask);
+ MODULE_HOOK_CALL_VOID(sendsig_sigcontext_16_hook, (ksi, mask),
+ break);
return;
case 2:
case 3:
@@ -2289,7 +2284,7 @@
if (docore) {
mutex_exit(p->p_lock);
- error = (*coredump_vec)(l, NULL);
+ MODULE_HOOK_CALL(coredump_hook, (l, NULL), enosys(), error);
if (kern_logsigexit) {
int uid = l->l_cred ?
diff -r 0520ccf0783c -r ef17de345c9c sys/kern/sys_ptrace_common.c
--- a/sys/kern/sys_ptrace_common.c Sun Nov 10 13:26:20 2019 +0000
+++ b/sys/kern/sys_ptrace_common.c Mon Nov 11 17:11:07 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: sys_ptrace_common.c,v 1.58.2.9 2019/10/23 19:25:39 martin Exp $ */
+/* $NetBSD: sys_ptrace_common.c,v 1.58.2.10 2019/11/11 17:11:07 martin Exp $ */
/*-
* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -118,7 +118,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.58.2.9 2019/10/23 19:25:39 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.58.2.10 2019/11/11 17:11:07 martin Exp $");
#ifdef _KERNEL_OPT
#include "opt_ptrace.h"
@@ -148,6 +148,7 @@
#include <sys/module.h>
#include <sys/condvar.h>
#include <sys/mutex.h>
+#include <sys/compat_stub.h>
#include <uvm/uvm_extern.h>
@@ -958,7 +959,7 @@
path[len] = '\0';
}
DPRINTF(("%s: lwp=%d\n", __func__, lt->l_lid));
- error = (*coredump_vec)(lt, path);
+ MODULE_HOOK_CALL(coredump_hook, (lt, path), enosys(), error);
out:
if (path)
kmem_free(path, len + 1);
diff -r 0520ccf0783c -r ef17de345c9c sys/kern/sys_sig.c
--- a/sys/kern/sys_sig.c Sun Nov 10 13:26:20 2019 +0000
+++ b/sys/kern/sys_sig.c Mon Nov 11 17:11:07 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: sys_sig.c,v 1.47.4.2 2019/11/10 13:24:50 martin Exp $ */
+/* $NetBSD: sys_sig.c,v 1.47.4.3 2019/11/11 17:11:07 martin Exp $ */
/*-
* Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_sig.c,v 1.47.4.2 2019/11/10 13:24:50 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_sig.c,v 1.47.4.3 2019/11/11 17:11:07 martin Exp $");
#include "opt_dtrace.h"
@@ -81,6 +81,7 @@
#include <sys/kmem.h>
#include <sys/module.h>
#include <sys/sdt.h>
+#include <sys/compat_stub.h>
SDT_PROVIDER_DECLARE(proc);
SDT_PROBE_DEFINE2(proc, kernel, , signal__clear,
@@ -413,11 +414,9 @@
v0v1valid = true;
else if ((p->p_lflag & PL_SIGCOMPAT) == 0) {
kernconfig_lock();
- if (sendsig_sigcontext_vec == NULL) {
- (void)module_autoload("compat_16",
- MODULE_CLASS_ANY);
- }
- if (sendsig_sigcontext_vec != NULL) {
+ (void)module_autoload("compat_16",
+ MODULE_CLASS_ANY);
+ if (sendsig_sigcontext_16_hook.hooked) {
/*
* We need to remember if the
* sigcontext method may be useable,
diff -r 0520ccf0783c -r ef17de345c9c sys/sys/compat_stub.h
--- a/sys/sys/compat_stub.h Sun Nov 10 13:26:20 2019 +0000
+++ b/sys/sys/compat_stub.h Mon Nov 11 17:11:07 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: compat_stub.h,v 1.18.2.1 2019/10/21 20:06:17 martin Exp $ */
+/* $NetBSD: compat_stub.h,v 1.18.2.2 2019/11/11 17:11:07 martin Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -35,6 +35,7 @@
#include <sys/module_hook.h>
#include <sys/param.h>
#include <sys/socket.h>
+#include <sys/sigtypes.h>
/*
* NOTE: If you make changes here, please remember to update the
@@ -357,4 +358,17 @@
MODULE_HOOK(netbsd32_machine32_hook, const char *, (void));
MODULE_HOOK(netbsd32_reg_validate_hook, int,
(struct lwp *, const struct reg *));
+
+/*
+ * Hook for compat_16 sendsig_sigcontext
+ */
+struct ksiginfo;
+MODULE_HOOK(sendsig_sigcontext_16_hook, void,
+ (const struct ksiginfo *, const sigset_t *));
+
+/*
+ * Hook for coredumps
+ */
+MODULE_HOOK(coredump_hook, int, (struct lwp *, const char *));
+
#endif /* _SYS_COMPAT_STUB_H */
diff -r 0520ccf0783c -r ef17de345c9c sys/sys/signalvar.h
--- a/sys/sys/signalvar.h Sun Nov 10 13:26:20 2019 +0000
+++ b/sys/sys/signalvar.h Mon Nov 11 17:11:07 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: signalvar.h,v 1.93.2.3 2019/10/21 20:13:09 martin Exp $ */
+/* $NetBSD: signalvar.h,v 1.93.2.4 2019/11/11 17:11:07 martin Exp $ */
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