stress-pty: exercise cfgetispeed and cfgetospeed on leader and follower

Signed-off-by: Colin Ian King <[email protected]>

Makefile.config

@@ -1714,7 +1714,8 @@ functions: \
 	BUILTIN_TAN BUILTIN_TANF BUILTIN_TANL \
 	INTRINSIC_ROLB INTRINSIC_ROLD INTRINSIC_ROLW INTRINSIC_ROLQ \
 	INTRINSIC_RORB INTRINSIC_RORD INTRINSIC_RORW INTRINSIC_RORQ \
-	CABSL CACHEFLUSH CCOS CCOSF CCOSL CHROOT CIMAG CIMAGF CIMAGL CLEARENV CLOCK_ADJTIME \
+	CABSL CACHEFLUSH CCOS CCOSF CCOSL CFGETISPEED CFGETOSPEED \
+	CHROOT CIMAG CIMAGF CIMAGL CLEARENV CLOCK_ADJTIME \
 	CLOCK_GETRES CLOCK_GETTIME CLOCK_NANOSLEEP CLOCK_SETTIME CLONE COPY_FILE_RANGE \
 	COSHL COSL CPOW CREAL CREALF CREALL CRYPT_R CSIN CSINF CSINL DUP3 DRAND48 DELETE_MODULE \
 	EIGEN ENDMNTENT ENDPWENT EPOLL_CREATE \
@@ -2119,6 +2120,12 @@ CCOSF:
 CCOSL:
 	$(call check,test-mathfunc,HAVE_CCOSL,ccosl,-lm,-DMATHFUNC=ccosl)
 
+CFGETISPEED:
+	$(call check,test-cfgetispeed,HAVE_CFGETISPEED,cfgetispeed)
+
+CFGETOSPEED:
+	$(call check,test-cfgetospeed,HAVE_CFGETOSPEED,cfgetospeed)
+
 CHROOT:
 	$(call check,test-chroot,HAVE_CHROOT,chroot)
 

stress-pty.c

@@ -402,6 +402,26 @@ static int stress_pty(stress_args_t *args)
 				(void)ret;
 			}
 #endif
+			{
+				struct termios ios;
+
+				if (tcgetattr(ptys[i].follower, &ios) == 0) {
+#if defined(HAVE_CFGETISPEED)
+					(void)cfgetispeed(&ios);
+#endif
+#if defined(HAVE_CFGETOSPEED)
+					(void)cfgetospeed(&ios);
+#endif
+				}
+				if (tcgetattr(ptys[i].leader, &ios) == 0) {
+#if defined(HAVE_CFGETISPEED)
+					(void)cfgetispeed(&ios);
+#endif
+#if defined(HAVE_CFGETOSPEED)
+					(void)cfgetospeed(&ios);
+#endif
+				}
+			}
 			if (!stress_continue_flag())
 				goto clean;
 		}
@@ -437,6 +457,7 @@ static int stress_pty(stress_args_t *args)
 			}
 		}
 #endif
+
 clean:
 		/*
 		 *  and close

test/test-cfgetispeed.c

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2023      Colin Ian King.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+#include <sys/termios.h>
+#include <unistd.h>
+#include <stdio.h>
+
+int main(void)
+{
+	struct termios t;
+	speed_t speed;
+	const int fd = fileno(stdin);
+
+	if (tcgetattr(fd, &t) != 0)
+		return 1;
+	speed = cfgetispeed(&t);
+
+	return (int)speed;
+}

test/test-cfgetospeed.c

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2023      Colin Ian King.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+#include <sys/termios.h>
+#include <unistd.h>
+#include <stdio.h>
+
+int main(void)
+{
+	struct termios t;
+	speed_t speed;
+	const int fd = fileno(stdout);
+
+	if (tcgetattr(fd, &t) != 0)
+		return 1;
+	speed = cfgetospeed(&t);
+
+	return (int)speed;
+}