X-Git-Url: http://git.marmaro.de/?a=blobdiff_plain;f=sbr%2Fgetans.c;h=3ef01ed5305cb82947b8e5e6dfc55a644bb8a980;hb=e69044f7624abe5cb2cb796d528c0cc5f29515f7;hp=5c70ba06b21dfcd181c4b8511988d5a5c85cb211;hpb=d45c3d28d788129428036fd7f26fa417beccd93e;p=mmh

diff --git a/sbr/getans.c b/sbr/getans.c
index 5c70ba0..3ef01ed 100644
--- a/sbr/getans.c
+++ b/sbr/getans.c
@@ -11,9 +11,10 @@
 #include <h/signals.h>
 #include <setjmp.h>
 #include <signal.h>
+#include <errno.h>
 
 static char ansbuf[BUFSIZ];
-static jmp_buf sigenv;
+static sigjmp_buf sigenv;
 
 /*
  * static prototypes
@@ -28,7 +29,7 @@ getans (char *prompt, struct swit *ansp)
     SIGNAL_HANDLER istat = NULL;
     char *cp, **cpp;
 
-    if (!(setjmp (sigenv))) {
+    if (!(sigsetjmp(sigenv, 1))) {
 	istat = SIGNAL (SIGINT, intrser);
     } else {
 	SIGNAL (SIGINT, istat);
@@ -40,8 +41,36 @@ getans (char *prompt, struct swit *ansp)
 	fflush (stdout);
 	cp = ansbuf;
 	while ((i = getchar ()) != '\n') {
-	    if (i == EOF)
-		longjmp (sigenv, 1);
+	    if (i == EOF) {
+	    	/*
+		 * If we get an EOF, return
+		 */
+		if (feof(stdin))
+		    siglongjmp (sigenv, 1);
+
+		/*
+		 * For errors, if we get an EINTR that means that we got
+		 * a signal and we should retry.  If we get another error,
+		 * then just return.
+		 */
+
+		else if (ferror(stdin)) {
+		    if (errno == EINTR) {
+		    	clearerr(stdin);
+			continue;
+		    }
+		    fprintf(stderr, "\nError %s during read\n",
+		    	    strerror(errno));
+		    siglongjmp (sigenv, 1);
+		} else {
+		    /*
+		     * Just for completeness's sake ...
+		     */
+
+		    fprintf(stderr, "\nUnknown problem in getchar()\n");
+		    siglongjmp (sigenv, 1);
+		}
+	    }
 	    if (cp < &ansbuf[sizeof ansbuf - 1])
 		*cp++ = i;
 	}
@@ -70,8 +99,10 @@ getans (char *prompt, struct swit *ansp)
 static void
 intrser (int i)
 {
+    NMH_UNUSED (i);
+
     /*
      * should this be siglongjmp?
      */
-    longjmp (sigenv, 1);
+    siglongjmp (sigenv, 1);
 }