sigset_t change (part 2 of 5)

-----------------------------

The core of the signalling code has been rewritten to operate
on the new sigset_t. No methodological changes have been made.
Most references to a sigset_t object are through macros (see
signalvar.h) to create a level of abstraction and to provide
a basis for further improvements.

The NSIG constant has not been changed to reflect the maximum
number of signals possible. The reason is that it breaks
programs (especially shells) which assume that all signals
have a non-null name in sys_signame. See src/bin/sh/trap.c
for an example. Instead _SIG_MAXSIG has been introduced to
hold the maximum signal possible with the new sigset_t.

struct sigprop has been moved from signalvar.h to kern_sig.c
because a) it is only used there, and b) access must be done
though function sigprop(). The latter because the table doesn't
holds properties for all signals, but only for the first NSIG
signals.

signal.h has been reorganized to make reading easier and to
add the new and/or modified structures. The "old" structures
are moved to signalvar.h to prevent namespace polution.

Especially the coda filesystem suffers from the change, because
it contained lines like (p->p_sigmask == SIGIO), which is easy
to do for integral types, but not for compound types.

NOTE: kdump (and port linux_kdump) must be recompiled.

Thanks to Garrett Wollman and Daniel Eischen for pressing the
importance of changing sigreturn as well.

1 files changed, 42 insertions, 18 deletions

diff --git a/sys/sys/sysproto.h b/sys/sys/sysproto.h
index 530ba1a..d80e69c 100644
--- a/sys/sys/sysproto.h
+++ b/sys/sys/sysproto.h
@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/kern/syscalls.master,v 1.64 1999/09/11 00:45:58 alfred Exp 
+ * created from FreeBSD: src/sys/kern/syscalls.master,v 1.65 1999/09/29 15:01:21 marcel Exp 
  */
 
 #ifndef _SYS_SYSPROTO_H_
@@ -188,17 +188,17 @@ struct	ktrace_args {
 	int	facs;	char facs_[PAD_(int)];
 	int	pid;	char pid_[PAD_(int)];
 };
-struct	sigaction_args {
+struct	osigaction_args {
 	int	signum;	char signum_[PAD_(int)];
-	struct sigaction *	nsa;	char nsa_[PAD_(struct sigaction *)];
-	struct sigaction *	osa;	char osa_[PAD_(struct sigaction *)];
+	struct osigaction *	nsa;	char nsa_[PAD_(struct osigaction *)];
+	struct osigaction *	osa;	char osa_[PAD_(struct osigaction *)];
 };
 struct	getgid_args {
 	register_t dummy;
 };
-struct	sigprocmask_args {
+struct	osigprocmask_args {
 	int	how;	char how_[PAD_(int)];
-	sigset_t	mask;	char mask_[PAD_(sigset_t)];
+	osigset_t	mask;	char mask_[PAD_(osigset_t)];
 };
 struct	getlogin_args {
 	char *	namebuf;	char namebuf_[PAD_(char *)];
@@ -210,12 +210,12 @@ struct	setlogin_args {
 struct	acct_args {
 	char *	path;	char path_[PAD_(char *)];
 };
-struct	sigpending_args {
+struct	osigpending_args {
 	register_t dummy;
 };
 struct	sigaltstack_args {
-	struct sigaltstack *	nss;	char nss_[PAD_(struct sigaltstack *)];
-	struct sigaltstack *	oss;	char oss_[PAD_(struct sigaltstack *)];
+	stack_t *	ss;	char ss_[PAD_(stack_t *)];
+	stack_t *	oss;	char oss_[PAD_(stack_t *)];
 };
 struct	ioctl_args {
 	int	fd;	char fd_[PAD_(int)];
@@ -358,8 +358,8 @@ struct	getpriority_args {
 	int	which;	char which_[PAD_(int)];
 	int	who;	char who_[PAD_(int)];
 };
-struct	sigreturn_args {
-	struct sigcontext *	sigcntxp;	char sigcntxp_[PAD_(struct sigcontext *)];
+struct	osigreturn_args {
+	struct osigcontext *	sigcntxp;	char sigcntxp_[PAD_(struct osigcontext *)];
 };
 struct	bind_args {
 	int	s;	char s_[PAD_(int)];
@@ -377,8 +377,8 @@ struct	listen_args {
 	int	s;	char s_[PAD_(int)];
 	int	backlog;	char backlog_[PAD_(int)];
 };
-struct	sigsuspend_args {
-	sigset_t	mask;	char mask_[PAD_(sigset_t)];
+struct	osigsuspend_args {
+	osigset_t	mask;	char mask_[PAD_(osigset_t)];
 };
 struct	gettimeofday_args {
 	struct timeval *	tp;	char tp_[PAD_(struct timeval *)];
@@ -923,6 +923,25 @@ struct	kldsym_args {
 struct	jail_args {
 	struct jail *	jail;	char jail_[PAD_(struct jail *)];
 };
+struct	sigprocmask_args {
+	int	how;	char how_[PAD_(int)];
+	const sigset_t *	set;	char set_[PAD_(const sigset_t *)];
+	sigset_t *	oset;	char oset_[PAD_(sigset_t *)];
+};
+struct	sigsuspend_args {
+	const sigset_t *	sigmask;	char sigmask_[PAD_(const sigset_t *)];
+};
+struct	sigaction_args {
+	int	sig;	char sig_[PAD_(int)];
+	const struct sigaction *	act;	char act_[PAD_(const struct sigaction *)];
+	struct sigaction *	oact;	char oact_[PAD_(struct sigaction *)];
+};
+struct	sigpending_args {
+	sigset_t *	set;	char set_[PAD_(sigset_t *)];
+};
+struct	sigreturn_args {
+	ucontext_t *	sigcntxp;	char sigcntxp_[PAD_(ucontext_t *)];
+};
 int	nosys __P((struct proc *, struct nosys_args *));
 void	exit __P((struct proc *, struct rexit_args *)) __dead2;
 int	fork __P((struct proc *, struct fork_args *));
@@ -964,13 +983,13 @@ int	pipe __P((struct proc *, struct pipe_args *));
 int	getegid __P((struct proc *, struct getegid_args *));
 int	profil __P((struct proc *, struct profil_args *));
 int	ktrace __P((struct proc *, struct ktrace_args *));
-int	sigaction __P((struct proc *, struct sigaction_args *));
+int	osigaction __P((struct proc *, struct osigaction_args *));
 int	getgid __P((struct proc *, struct getgid_args *));
-int	sigprocmask __P((struct proc *, struct sigprocmask_args *));
+int	osigprocmask __P((struct proc *, struct osigprocmask_args *));
 int	getlogin __P((struct proc *, struct getlogin_args *));
 int	setlogin __P((struct proc *, struct setlogin_args *));
 int	acct __P((struct proc *, struct acct_args *));
-int	sigpending __P((struct proc *, struct sigpending_args *));
+int	osigpending __P((struct proc *, struct osigpending_args *));
 int	sigaltstack __P((struct proc *, struct sigaltstack_args *));
 int	ioctl __P((struct proc *, struct ioctl_args *));
 int	reboot __P((struct proc *, struct reboot_args *));
@@ -1005,11 +1024,11 @@ int	setpriority __P((struct proc *, struct setpriority_args *));
 int	socket __P((struct proc *, struct socket_args *));
 int	connect __P((struct proc *, struct connect_args *));
 int	getpriority __P((struct proc *, struct getpriority_args *));
-int	sigreturn __P((struct proc *, struct sigreturn_args *));
+int	osigreturn __P((struct proc *, struct osigreturn_args *));
 int	bind __P((struct proc *, struct bind_args *));
 int	setsockopt __P((struct proc *, struct setsockopt_args *));
 int	listen __P((struct proc *, struct listen_args *));
-int	sigsuspend __P((struct proc *, struct sigsuspend_args *));
+int	osigsuspend __P((struct proc *, struct osigsuspend_args *));
 int	gettimeofday __P((struct proc *, struct gettimeofday_args *));
 int	getrusage __P((struct proc *, struct getrusage_args *));
 int	getsockopt __P((struct proc *, struct getsockopt_args *));
@@ -1136,6 +1155,11 @@ int	utrace __P((struct proc *, struct utrace_args *));
 int	sendfile __P((struct proc *, struct sendfile_args *));
 int	kldsym __P((struct proc *, struct kldsym_args *));
 int	jail __P((struct proc *, struct jail_args *));
+int	sigprocmask __P((struct proc *, struct sigprocmask_args *));
+int	sigsuspend __P((struct proc *, struct sigsuspend_args *));
+int	sigaction __P((struct proc *, struct sigaction_args *));
+int	sigpending __P((struct proc *, struct sigpending_args *));
+int	sigreturn __P((struct proc *, struct sigreturn_args *));
 
 #ifdef COMPAT_43