source getpty() out to pty.c

pty.c

@@ -0,0 +1,41 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#if !(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
+#include <pty.h>
+#endif
+
+extern int ptm, pts;
+
+void
+getpty(void) {
+	char *ptsdev;
+
+#if defined(_GNU_SOURCE)
+	ptm = getpt();
+#elif _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600
+	ptm = posix_openpt(O_RDWR);
+#else
+	ptm = open("/dev/ptmx", O_RDWR);
+	if(ptm == -1)
+		if(openpty(&ptm, &pts, NULL, NULL, NULL) == -1)
+			eprintn("error, cannot open pty");
+#endif
+#if defined(_XOPEN_SOURCE)
+	if(ptm != -1) {
+		if(grantpt(ptm) == -1)
+			eprintn("error, cannot grant access to pty");
+		if(unlockpt(ptm) == -1)
+			eprintn("error, cannot unlock pty");
+		ptsdev = ptsname(ptm);
+		if(!ptsdev)
+			eprintn("error, slave pty name undefined");
+		pts = open(ptsdev, O_RDWR);
+		if(pts == -1)
+			eprintn("error, cannot open slave pty");
+	}
+	else
+		eprintn("error, cannot open pty");
+#endif
+}

std.c

@@ -6,9 +6,6 @@
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
-#if !(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
-#include <pty.h>
-#endif
 #include <signal.h>
 #include <stdarg.h>
 #include <stdio.h>
@@ -100,38 +97,6 @@ eprintn(const char *errstr, ...) {
 	exit(EXIT_FAILURE);
 }
 
-void
-getpty(void) {
-	char *ptsdev;
-
-#if defined(_GNU_SOURCE)
-	ptm = getpt();
-#elif _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600
-	ptm = posix_openpt(O_RDWR);
-#else
-	ptm = open("/dev/ptmx", O_RDWR);
-	if(ptm == -1)
-		if(openpty(&ptm, &pts, NULL, NULL, NULL) == -1)
-			eprintn("error, cannot open pty");
-#endif
-#if defined(_XOPEN_SOURCE)
-	if(ptm != -1) {
-		if(grantpt(ptm) == -1)
-			eprintn("error, cannot grant access to pty");
-		if(unlockpt(ptm) == -1)
-			eprintn("error, cannot unlock pty");
-		ptsdev = ptsname(ptm);
-		if(!ptsdev)
-			eprintn("error, slave pty name undefined");
-		pts = open(ptsdev, O_RDWR);
-		if(pts == -1)
-			eprintn("error, cannot open slave pty");
-	}
-	else
-		eprintn("error, cannot open pty");
-#endif
-}
-
 void
 movea(int x, int y) {
 	x = MAX(x, cols);