1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/cfsetspeed.c b/sysdeps/unix/sysv/linux/cfsetspeed.c
new file mode 100644
index 0000000..8ce46f8
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/cfsetspeed.c
@@ -0,0 +1,59 @@
+/* cfsetspeed(), Linux version.
+   Copyright (C) 1991-2025 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <termios_internals.h>
+
+/* Set both the input and output baud rates stored in *TERMIOS_P to SPEED.  */
+int
+__cfsetspeed (struct termios *termios_p, speed_t speed)
+{
+  tcflag_t cbaud = ___speed_to_cbaud (speed);
+
+  termios_p->c_ospeed = speed;
+  termios_p->c_ispeed = speed;
+  termios_p->c_cflag &= ~(CBAUD | CIBAUD);
+  termios_p->c_cflag |= cbaud | (cbaud << IBSHIFT);
+
+  return 0;
+}
+libc_hidden_def (__cfsetspeed)
+versioned_symbol (libc, __cfsetspeed, cfsetspeed, GLIBC_2_42);
+
+#if _TERMIOS_OLD_COMPAT
+
+int
+attribute_compat_text_section
+__old_cfsetspeed (old_termios_t *termios_p, speed_t speed)
+{
+  speed_t real_speed = ___cbaud_to_speed (speed, -1);
+  if (real_speed == (speed_t)-1)
+    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+
+#if !_HAVE_STRUCT_OLD_TERMIOS
+  /* Otherwise these fields don't exist in old_termios_t */
+  termios_p->c_ospeed = real_speed;
+  termios_p->c_ispeed = real_speed;
+#endif
+  termios_p->c_cflag &= ~(CBAUD | CIBAUD);
+  termios_p->c_cflag |= speed | (speed << IBSHIFT);
+
+  return 0;
+}
+compat_symbol (libc, __old_cfsetspeed, cfsetspeed, GLIBC_2_0);
+
+#endif /* _TERMIOS_OLD_COMPAT */