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[src/trunk]: src/sys Make the list of syscalls which can trigger a module aut...
details: https://anonhg.NetBSD.org/src/rev/4e9012a1bf80
branches: trunk
changeset: 812086:4e9012a1bf80
user: pgoyette <pgoyette%NetBSD.org@localhost>
date: Mon Nov 30 22:47:19 2015 +0000
description:
Make the list of syscalls which can trigger a module autoload an
attribute of each emulation, rather than having a single global
list which applies only to the default emulation.
This changes 'struct emul' so
Welcome to 7.99.23 !
diffstat:
sys/kern/kern_exec.c | 12 ++++++++++--
sys/kern/kern_syscall.c | 22 +++++++++++-----------
sys/kern/makesyscalls.sh | 12 +++++++-----
sys/kern/syscalls.conf | 3 ++-
sys/sys/param.h | 4 ++--
sys/sys/proc.h | 11 ++++++++++-
6 files changed, 42 insertions(+), 22 deletions(-)
diffs (213 lines):
diff -r bdaf474883d3 -r 4e9012a1bf80 sys/kern/kern_exec.c
--- a/sys/kern/kern_exec.c Mon Nov 30 19:59:34 2015 +0000
+++ b/sys/kern/kern_exec.c Mon Nov 30 22:47:19 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_exec.c,v 1.422 2015/11/26 13:15:34 martin Exp $ */
+/* $NetBSD: kern_exec.c,v 1.423 2015/11/30 22:47:19 pgoyette Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -59,7 +59,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_exec.c,v 1.422 2015/11/26 13:15:34 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_exec.c,v 1.423 2015/11/30 22:47:19 pgoyette Exp $");
#include "opt_exec.h"
#include "opt_execfmt.h"
@@ -181,6 +181,11 @@
void syscall(void);
#endif
+/* NetBSD autoloadable syscalls */
+#ifdef MODULAR
+#include <kern/syscalls_autoload.c>
+#endif
+
/* NetBSD emul struct */
struct emul emul_netbsd = {
.e_name = "netbsd",
@@ -195,6 +200,9 @@
.e_nosys = SYS_syscall,
.e_nsysent = SYS_NSYSENT,
#endif
+#ifdef MODULAR
+ .e_sc_autoload = netbsd_syscalls_autoload,
+#endif
.e_sysent = sysent,
#ifdef SYSCALL_DEBUG
.e_syscallnames = syscallnames,
diff -r bdaf474883d3 -r 4e9012a1bf80 sys/kern/kern_syscall.c
--- a/sys/kern/kern_syscall.c Mon Nov 30 19:59:34 2015 +0000
+++ b/sys/kern/kern_syscall.c Mon Nov 30 22:47:19 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_syscall.c,v 1.11 2015/05/09 05:56:36 pgoyette Exp $ */
+/* $NetBSD: kern_syscall.c,v 1.12 2015/11/30 22:47:19 pgoyette Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_syscall.c,v 1.11 2015/05/09 05:56:36 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_syscall.c,v 1.12 2015/11/30 22:47:19 pgoyette Exp $");
#ifdef _KERNEL_OPT
#include "opt_modular.h"
@@ -60,11 +60,11 @@
sys_nomodule(struct lwp *l, const void *v, register_t *retval)
{
#ifdef MODULAR
-#include <kern/syscalls_autoload.c>
const struct sysent *sy;
const struct emul *em;
- int code, i;
+ const struct sc_auto *auto_list;
+ int code;
/*
* Restart the syscall if we interrupted a module unload that
@@ -82,21 +82,21 @@
* works, retry the request.
*/
em = l->l_proc->p_emul;
- if (em == &emul_netbsd) {
- code = sy - em->e_sysent;
- for (i = 0; i < __arraycount(syscalls_autoload); i++) {
- if (syscalls_autoload[i].al_code != code) {
+ code = sy - em->e_sysent;
+
+ if ((auto_list = em->e_sc_autoload) != NULL)
+ for (; auto_list->al_code > 0; auto_list++) {
+ if (auto_list->al_code != code) {
continue;
}
- if (module_autoload(syscalls_autoload[i].al_module,
- MODULE_CLASS_ANY) != 0 ||
+ if (module_autoload(auto_list->al_module,
+ MODULE_CLASS_ANY) != 0 ||
sy->sy_call == sys_nomodule) {
break;
}
kernconfig_unlock();
return ERESTART;
}
- }
kernconfig_unlock();
#endif /* MODULAR */
diff -r bdaf474883d3 -r 4e9012a1bf80 sys/kern/makesyscalls.sh
--- a/sys/kern/makesyscalls.sh Mon Nov 30 19:59:34 2015 +0000
+++ b/sys/kern/makesyscalls.sh Mon Nov 30 22:47:19 2015 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: makesyscalls.sh,v 1.154 2015/09/24 14:30:52 christos Exp $
+# $NetBSD: makesyscalls.sh,v 1.155 2015/11/30 22:47:19 pgoyette Exp $
#
# Copyright (c) 1994, 1996, 2000 Christopher G. Demetriou
# All rights reserved.
@@ -51,6 +51,7 @@
# switchname the name for the 'struct sysent' we define
# namesname the name for the 'const char *[]' we define
# constprefix the prefix for the system call constants
+# autoloadprefix the prefix for the autoload table name
# registertype the type for register_t
# nsysent the size of the sysent table
# sys_nosys [optional] name of function called for unsupported
@@ -165,6 +166,7 @@
switchname = \"$switchname\"
namesname = \"$namesname\"
constprefix = \"$constprefix\"
+ autoloadprefix = \"$autoloadprefix\"
registertype = \"$registertype\"
sysalign=\"$sysalign\"
if (!registertype) {
@@ -255,10 +257,9 @@
printf " * created from%s\n */\n\n", $0 > sysautoload
printf "#include <sys/cdefs.h>\n__KERNEL_RCSID(0, \"%s\");\n\n", tag > sysautoload
- printf("static struct {\n") > sysautoload
- printf("\tu_int\t\tal_code;\n") > sysautoload
- printf("\tconst char\t*al_module;\n") > sysautoload
- printf("} const syscalls_autoload[] = {\n") > sysautoload
+ printf("#include <sys/proc.h>\n") > sysautoload
+ printf("static struct sc_auto " autoloadprefix \
+ "_syscalls_autoload[] = {\n") > sysautoload
printf " * created from%s\n */\n\n", $0 > rumpcalls
printf "#ifdef RUMP_CLIENT\n" > rumpcalls
@@ -1149,6 +1150,7 @@
cat $sysprotos >> $sysarghdr
echo "#endif /* _${constprefix}SYSCALL_H_ */" >> $sysnumhdr
echo "#endif /* _${constprefix}SYSCALLARGS_H_ */" >> $sysarghdr
+echo "\t { 0, NULL }" >> $sysautoload
echo "};" >> $sysautoload
printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos
cat $sysdcl $sysent > $syssw
diff -r bdaf474883d3 -r 4e9012a1bf80 sys/kern/syscalls.conf
--- a/sys/kern/syscalls.conf Mon Nov 30 19:59:34 2015 +0000
+++ b/sys/kern/syscalls.conf Mon Nov 30 22:47:19 2015 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: syscalls.conf,v 1.24 2015/08/24 16:05:46 pooka Exp $
+# $NetBSD: syscalls.conf,v 1.25 2015/11/30 22:47:19 pgoyette Exp $
sysnames="syscalls.c"
sysnumhdr="../sys/syscall.h"
@@ -17,4 +17,5 @@
switchname="sysent"
namesname="syscallnames"
constprefix="SYS_"
+autoloadprefix="netbsd"
nsysent=512
diff -r bdaf474883d3 -r 4e9012a1bf80 sys/sys/param.h
--- a/sys/sys/param.h Mon Nov 30 19:59:34 2015 +0000
+++ b/sys/sys/param.h Mon Nov 30 22:47:19 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: param.h,v 1.487 2015/11/26 13:17:07 martin Exp $ */
+/* $NetBSD: param.h,v 1.488 2015/11/30 22:47:19 pgoyette Exp $ */
/*-
* Copyright (c) 1982, 1986, 1989, 1993
@@ -67,7 +67,7 @@
* 2.99.9 (299000900)
*/
-#define __NetBSD_Version__ 799002200 /* NetBSD 7.99.22 */
+#define __NetBSD_Version__ 799002300 /* NetBSD 7.99.23 */
#define __NetBSD_Prereq__(M,m,p) (((((M) * 100000000) + \
(m) * 1000000) + (p) * 100) <= __NetBSD_Version__)
diff -r bdaf474883d3 -r 4e9012a1bf80 sys/sys/proc.h
--- a/sys/sys/proc.h Mon Nov 30 19:59:34 2015 +0000
+++ b/sys/sys/proc.h Mon Nov 30 22:47:19 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: proc.h,v 1.324 2015/11/26 13:15:34 martin Exp $ */
+/* $NetBSD: proc.h,v 1.325 2015/11/30 22:47:19 pgoyette Exp $ */
/*-
* Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -124,6 +124,14 @@
};
/*
+ * Autoloadable syscall definition
+ */
+struct sc_auto {
+ u_int al_code;
+ const char *al_module;
+};
+
+/*
* One structure allocated per emulation.
*/
struct exec_package;
@@ -143,6 +151,7 @@
struct sysent *e_sysent; /* System call array */
const char * const *e_syscallnames; /* System call name array */
/* Signal sending function */
+ struct sc_auto *e_sc_autoload; /* List of autoloadable syscalls */
void (*e_sendsig)(const struct ksiginfo *,
const sigset_t *);
void (*e_trapsignal)(struct lwp *, struct ksiginfo *);
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