Merged most of David Shaw's changes in 1.3 since 2003-06-03.

1 files changed, 18 insertions, 9 deletions

diff --git a/g10/signal.c b/g10/signal.c
index 90c0841d8..9f50fbe3a 100644
--- a/g10/signal.c
+++ b/g10/signal.c
@@ -1,5 +1,5 @@
 /* signal.c - signal handling
- * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+ * Copyright (C) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
  *
  * This file is part of GnuPG.
  *
@@ -42,7 +42,7 @@ static void
 init_one_signal (int sig, RETSIGTYPE (*handler)(int), int check_ign )
 {
 #ifndef HAVE_DOSISH_SYSTEM
-#ifdef HAVE_SIGACTION
+#if defined(HAVE_SIGACTION) && defined(HAVE_STRUCT_SIGACTION)
     struct sigaction oact, nact;
 
     if (check_ign) {
@@ -132,7 +132,7 @@ void
 pause_on_sigusr( int which )
 {
 #ifndef HAVE_DOSISH_SYSTEM
-#ifdef HAVE_SIGPROCMASK
+#if defined(HAVE_SIGPROCMASK) && defined(HAVE_SIGSET_T)
     sigset_t mask, oldmask;
 
     assert( which == 1 );
@@ -150,8 +150,8 @@ pause_on_sigusr( int which )
      while (!caught_sigusr1)
          sigpause(SIGUSR1);
      caught_sigusr1 = 0;
-     sigrelse(SIGUSR1); ????
-#endif /*!HAVE_SIGPROCMASK*/
+     sigrelse(SIGUSR1); 
+#endif /*!HAVE_SIGPROCMASK && HAVE_SISET_T*/
 #endif
 }
 
@@ -161,7 +161,7 @@ do_block( int block )
 {
 #ifndef HAVE_DOSISH_SYSTEM
     static int is_blocked;
-#ifdef HAVE_SIGPROCMASK
+#if defined(HAVE_SIGPROCMASK) && defined(HAVE_SIGSET_T)
     static sigset_t oldmask;
 
     if( block ) {
@@ -180,13 +180,22 @@ do_block( int block )
 	is_blocked = 0;
     }
 #else /*!HAVE_SIGPROCMASK*/
-    static void (*disposition[MAXSIG])();
+
+#if defined(NSIG)
+# define SIGSMAX (NSIG)
+#elif defined(MAXSIG)
+# define SIGSMAX (MAXSIG+1)
+#else
+# error "define SIGSMAX to the number of signals on your platform plus one"
+#endif
+
+    static void (*disposition[SIGSMAX])(int);
     int sig;
 
     if( block ) {
 	if( is_blocked )
 	    log_bug("signals are already blocked\n");
-        for (sig=1; sig < MAXSIG; sig++) {
+        for (sig=1; sig < SIGSMAX; sig++) {
             disposition[sig] = sigset (sig, SIG_HOLD);
         }
 	is_blocked = 1;
@@ -194,7 +203,7 @@ do_block( int block )
     else {
 	if( !is_blocked )
 	    log_bug("signals are not blocked\n");
-        for (sig=1; sig < MAXSIG; sig++) {
+        for (sig=1; sig < SIGSMAX; sig++) {
             sigset (sig, disposition[sig]);
         }
 	is_blocked = 0;