From: "Pali Rohár via Libc-alpha" <libc-alpha@sourceware.org>
To: "Alejandro Colomar (man-pages)" <alx.manpages@gmail.com>,
Michael Kerrisk <mtk.manpages@gmail.com>
Cc: "Marek Behún" <kabel@kernel.org>,
"G. Branden Robinson" <g.branden.robinson@gmail.com>,
libc-alpha@sourceware.org, linux-man@vger.kernel.org
Subject: [PATCH v3] ioctl_tty.2: Fix information about header include file
Date: Tue, 31 Aug 2021 22:28:09 +0200 [thread overview]
Message-ID: <20210831202809.29819-1-pali@kernel.org> (raw)
In-Reply-To: <3d927d3c-67a1-bb48-b597-44c87b8f715a@gmail.com>
Header file termios.h contains incompatible definitions for linux ioctl
calls. Correct definitions are exported by header file linux/termios.h but
this file conflicts with sys/ioctl.h header file (required for ioctl()
call). Therefore include direct asm header file asm/termbits.h which
contains compatible definitions and structures for ioctl calls.
Signed-off-by: Pali Rohár <pali@kernel.org>
---
Changes in v3:
* Use .I <file> instead of .B #include <file>
* Use Bnnn instead of Bnn
Changes in v2:
* Reformat SYNOPSIS for 80 chars per line
---
man2/ioctl_tty.2 | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/man2/ioctl_tty.2 b/man2/ioctl_tty.2
index 186011ee7c33..7d866867c6bd 100644
--- a/man2/ioctl_tty.2
+++ b/man2/ioctl_tty.2
@@ -11,8 +11,10 @@ ioctl_tty \- ioctls for terminals and serial lines
.SH SYNOPSIS
.nf
.B #include <sys/ioctl.h>
-.BR "#include <termios.h>" " /* Definition of " CLOCAL ", and"
-.BR " TC*" { FLUSH , ON , OFF "} constants */"
+.BR "#include <asm/termbits.h>" " /* Definition of " "struct termios" ,
+.BR " struct termios2" ", and"
+.BR " Bnnn" ", " BOTHER ", " CBAUD ", " CLOCAL ,
+.BR " TC*" { FLUSH , ON , OFF "} and other constants */"
.PP
.BI "int ioctl(int " fd ", int " cmd ", ...);"
.fi
@@ -31,6 +33,19 @@ makes for nonportable programs.
Use the POSIX interface described in
.BR termios (3)
whenever possible.
+.PP
+Please note that
+.B struct termios
+from
+.I <asm/termbits.h>
+is different and incompatible with
+.B struct termios
+from
+.IR <termios.h> .
+These ioctl calls require
+.B struct termios
+from
+.IR <asm/termbits.h> .
.SS Get and set terminal attributes
.TP
.B TCGETS
--
2.20.1
next prev parent reply other threads:[~2021-08-31 20:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-30 10:53 [PATCH] ioctl_tty.2: Fix information about header include file Pali Rohár via Libc-alpha
2021-07-30 12:02 ` Alejandro Colomar (man-pages) via Libc-alpha
2021-07-30 13:05 ` [PATCH v2] " Pali Rohár via Libc-alpha
2021-08-08 8:26 ` Alejandro Colomar (man-pages) via Libc-alpha
2021-08-31 20:28 ` Pali Rohár via Libc-alpha [this message]
2021-09-10 17:39 ` [PATCH v3] " Pali Rohár via Libc-alpha
2021-09-10 19:47 ` Alejandro Colomar (man-pages) via Libc-alpha
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