[PATCH 18/23] termios.3: SPARC architecture has 4 different Bnnn constants
From: Alejandro Colomar <hidden>
Date: 2021-08-08 08:42:04
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Pali Rohár <pali@kernel.org> SPARC is special, it does not have Bnnn constants for baud rates above 2000000. Instead it defines 4 Bnnn constants with smaller baud rates. This difference between SPARC and non-SPARC architectures is present in both glibc API (termios.h) and also kernel ioctl API (asm/termbits.h). Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Alejandro Colomar <redacted> --- man3/termios.3 | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/man3/termios.3 b/man3/termios.3
index 4fbd34a52..8c88c25e4 100644
--- a/man3/termios.3
+++ b/man3/termios.3@@ -953,6 +953,24 @@ to by \fItermios_p\fP to \fIspeed\fP, which must be one of these constants: B1152000 B1500000 B2000000 +.ft P +.fi +.PP +These constants are additionally supported on the SPARC architecture: +.PP +.nf +.ft B + B76800 + B153600 + B307200 + B614400 +.ft P +.fi +.PP +These constants are additionally supported on non-SPARC architectures: +.PP +.nf +.ft B B2500000 B3000000 B3500000
@@ -960,6 +978,11 @@ to by \fItermios_p\fP to \fIspeed\fP, which must be one of these constants: .ft P .fi .PP +Due to differences between architectures, portable applications should check +if a particular +.BI B nnn +constant is defined prior to using it. +.PP The zero baud rate, .BR B0 , is used to terminate the connection.
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2.32.0