termios: add new baud_t interface, defined to be explicitly numeric

Add an explicitly numeric interface for baudrate setting. For glibc, this only announces what is a fair accompli, but this is a plausible way forward for standardization, and may be possible to infill on non-compliant systems. The POSIX committee has stated: [https://www.austingroupbugs.net/view.php?id=1916#c7135] A future version of this standard is expected to add at least the following symbolic constants for use as values of objects of type speed_t: B57600, B115200, B230400, B460800, and B921600. Implementations are encouraged to propose additional interfaces which will make it possible to set and query a wider range of speeds than just those enumerated by the constants beginning with B. If a set of common interfaces emerges between several implementations, a future version of this standard will likely add those interfaces. This is exactly that interface. The use of the term "baud" is due to the need to have a term contrasting "speed", and it is already well established as a legacy term -- including in the names of the legacy Bxxx constants. Futhermore, it *is* valid from the point of view that the termios interface fundamentally emulates an RS-232 serial port as far as the application software is concerned. The documentation states that for the current version of glibc, speed_t == baud_t, but explicitly declares that this may not be the case in the future. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-08-01 10:06:57 +03:00 · 2025-06-11 18:35:42 -07:00
parent 98aeca349a
commit 5f138519eb
45 changed files with 400 additions and 27 deletions
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@ -2752,9 +2752,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@ -3099,9 +3099,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@ -2513,9 +2513,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@ -2805,9 +2805,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@ -2802,9 +2802,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/cfsetspeed.c
+++ b/sysdeps/unix/sysv/linux/cfsetspeed.c
@ -31,6 +31,7 @@ __cfsetspeed (struct termios *termios_p, speed_t speed)

  return 0;
 }
+libc_hidden_def (__cfsetspeed)
 versioned_symbol (libc, __cfsetspeed, cfsetspeed, GLIBC_2_42);

 #if _TERMIOS_OLD_COMPAT
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@ -2789,9 +2789,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@ -2826,9 +2826,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@ -3009,9 +3009,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
@ -2273,9 +2273,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@ -2785,9 +2785,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@ -2952,9 +2952,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@ -2838,9 +2838,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@ -2835,9 +2835,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@ -2913,9 +2913,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@ -2911,9 +2911,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@ -2919,9 +2919,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@ -2821,9 +2821,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
+++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
@ -2263,9 +2263,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@ -3142,9 +3142,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@ -3187,9 +3187,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@ -2896,9 +2896,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@ -2972,9 +2972,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@ -2516,9 +2516,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@ -2716,9 +2716,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@ -3140,9 +3140,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@ -2933,9 +2933,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@ -2832,9 +2832,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@ -2829,9 +2829,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@ -3161,9 +3161,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@ -2797,9 +2797,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/speed.c
+++ b/sysdeps/unix/sysv/linux/speed.c
@ -263,6 +263,7 @@ __cfgetospeed (const struct termios *termios_p)
 {
  return termios_p->c_ospeed;
 }
+libc_hidden_def (__cfgetospeed)
 versioned_symbol (libc, __cfgetospeed, cfgetospeed, GLIBC_2_42);

 /* Return the input baud rate stored in *TERMIOS_P.  */
@ -271,6 +272,7 @@ __cfgetispeed (const struct termios *termios_p)
 {
  return termios_p->c_ispeed;
 }
+libc_hidden_def (__cfgetispeed)
 versioned_symbol (libc, __cfgetispeed, cfgetispeed, GLIBC_2_42);

 /* Set the output baud rate stored in *TERMIOS_P to SPEED.  */
@ -285,6 +287,7 @@ __cfsetospeed (struct termios *termios_p, speed_t speed)

  return 0;
 }
+libc_hidden_def (__cfsetospeed)
 versioned_symbol (libc, __cfsetospeed, cfsetospeed, GLIBC_2_42);

 /* Set the input baud rate stored in *TERMIOS_P to SPEED. */
@ -299,6 +302,7 @@ __cfsetispeed (struct termios *termios_p, speed_t speed)

  return 0;
 }
+libc_hidden_def (__cfsetispeed)
 versioned_symbol (libc, __cfsetispeed, cfsetispeed, GLIBC_2_42);

 #if _TERMIOS_OLD_COMPAT
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@ -2748,9 +2748,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@ -2767,9 +2767,14 @@ GLIBC_2.41 sched_getattr F
 GLIBC_2.41 sched_setattr F
 GLIBC_2.42 __inet_ntop_chk F
 GLIBC_2.42 __inet_pton_chk F
+GLIBC_2.42 cfgetibaud F
 GLIBC_2.42 cfgetispeed F
+GLIBC_2.42 cfgetobaud F
 GLIBC_2.42 cfgetospeed F
+GLIBC_2.42 cfsetbaud F
+GLIBC_2.42 cfsetibaud F
 GLIBC_2.42 cfsetispeed F
+GLIBC_2.42 cfsetobaud F
 GLIBC_2.42 cfsetospeed F
 GLIBC_2.42 cfsetspeed F
 GLIBC_2.42 pthread_gettid_np F