sigset_t change (part 4 of 5)

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

The compatibility code and/or emulators have been updated:

iBCS2 now mostly uses the older syscalls. SVR4 now properly
handles all signals. This has been achieved by using the
new sigset_t throughout the emulator. The Linuxulator has
been severely updated. Internally the new Linux sigset_t is
made the default. These are then mapped to and from the
new FreeBSD sigset_t.

Also, rt_sigsuspend has been implemented in the Linuxulator.
Implementing this syscall basicly caused all this sigset_t
changing in the first place and the syscall has been used
throughout the change as a means for testing. It basicly is
too much work to undo the implementation so that it can
later be added again.

A special note on the use of sv_sigtbl and sv_sigsize in
struct sysentvec:
Every signal larger than sv_sigsize is not translated and is
passed on to the signal handler unmodified. Signals in the
range 1 upto and including sv_sigsize are translated.
The rationale is that only the system defined signals need to
be translated.

The emulators also have been updated so that the translation
tables are only indexed for valid (system defined) signals.
This change also fixes the translation bug already in the
SVR4 emulator.

1 files changed, 52 insertions, 39 deletions

diff --git a/sys/alpha/linux/linux.h b/sys/alpha/linux/linux.h
index e55a367..f581314 100644
--- a/sys/alpha/linux/linux.h
+++ b/sys/alpha/linux/linux.h
@@ -47,35 +47,32 @@ typedef struct {
 	long val[2];
 } linux_fsid_t;
 typedef int linux_pid_t;
-typedef unsigned long linux_sigset_t;
-typedef void (*linux_handler_t)(int);
-typedef struct {
-	void (*lsa_handler)(int);
-	linux_sigset_t lsa_mask;
-	unsigned long lsa_flags;
-	void (*lsa_restorer)(void);
-} linux_sigaction_t;
 typedef int linux_key_t;
 
+/*
+ * Signal stuff...
+ */
+typedef void (*linux_handler_t)(int);
+
+typedef unsigned long linux_osigset_t;
+
 typedef struct {
-    unsigned    long sig[2];
-} linux_new_sigset_t;
+	unsigned int	__bits[2];
+} linux_sigset_t;
+
 typedef struct {
-    void        (*lsa_handler)(int);
-    unsigned    long lsa_flags;
-    void        (*lsa_restorer)(void);
-    linux_new_sigset_t lsa_mask;
-} linux_new_sigaction_t;
+	void		(*lsa_handler)(int);
+	linux_osigset_t	lsa_mask;
+	unsigned long	lsa_flags;
+	void		(*lsa_restorer)(void);
+} linux_osigaction_t;
 
-#define LINUX_MAX_UTSNAME	65
-struct linux_new_utsname {
-    char sysname[LINUX_MAX_UTSNAME];
-    char nodename[LINUX_MAX_UTSNAME];
-    char release[LINUX_MAX_UTSNAME];
-    char version[LINUX_MAX_UTSNAME];
-    char machine[LINUX_MAX_UTSNAME];
-    char domainname[LINUX_MAX_UTSNAME];
-};
+typedef struct {
+	void		(*lsa_handler)(int);
+	unsigned long	lsa_flags;
+	void		(*lsa_restorer)(void);
+	linux_sigset_t	lsa_mask;
+} linux_sigaction_t;
 
 /*
  * The Linux sigcontext, pretty much a standard 386 trapframe.
@@ -121,20 +118,6 @@ struct linux_sigframe {
 
 extern int bsd_to_linux_signal[];
 extern int linux_to_bsd_signal[];
-extern char linux_sigcode[];
-extern int linux_szsigcode;
-extern const char linux_emul_path[];
-
-extern struct sysent linux_sysent[LINUX_SYS_MAXSYSCALL];
-extern struct sysentvec linux_sysvec;
-extern struct sysentvec elf_linux_sysvec;
-
-/* dummy struct definitions */
-struct image_params;
-struct trapframe;
-
-/* misc defines */
-#define LINUX_NAME_MAX		255
 
 /* signal numbers */
 #define LINUX_SIGHUP		 1
@@ -170,7 +153,8 @@ struct trapframe;
 #define LINUX_SIGPOLL		LINUX_SIGIO
 #define LINUX_SIGPWR		30
 #define LINUX_SIGUNUSED		31
-#define LINUX_NSIG		32
+#define LINUX_NSIG		64
+#define LINUX_SIGTBLSZ		31
 
 /* sigaction flags */
 #define LINUX_SA_NOCLDSTOP	0x00000001
@@ -188,6 +172,35 @@ struct trapframe;
 #define LINUX_SIG_UNBLOCK	1
 #define LINUX_SIG_SETMASK	2
 
+#define LINUX_SIGEMPTYSET(set)		(set).__bits[0] = (set).__bits[1] = 0
+#define LINUX_SIGISMEMBER(set, sig)	SIGISMEMBER(set, sig)
+#define LINUX_SIGADDSET(set, sig)	SIGADDSET(set, sig)
+
+extern char linux_sigcode[];
+extern int linux_szsigcode;
+extern const char linux_emul_path[];
+
+extern struct sysent linux_sysent[LINUX_SYS_MAXSYSCALL];
+extern struct sysentvec linux_sysvec;
+extern struct sysentvec elf_linux_sysvec;
+
+/* dummy struct definitions */
+struct image_params;
+struct trapframe;
+
+#define LINUX_MAX_UTSNAME	65
+struct linux_new_utsname {
+    char sysname[LINUX_MAX_UTSNAME];
+    char nodename[LINUX_MAX_UTSNAME];
+    char release[LINUX_MAX_UTSNAME];
+    char version[LINUX_MAX_UTSNAME];
+    char machine[LINUX_MAX_UTSNAME];
+    char domainname[LINUX_MAX_UTSNAME];
+};
+
+/* misc defines */
+#define LINUX_NAME_MAX		255
+
 /* resource limits */
 #define LINUX_RLIMIT_CPU        0
 #define LINUX_RLIMIT_FSIZE      1