[PATCH v2] ioctl_tty.2: Fix information about header include file

[Alejandro Colomar (man-pages)]

Hi Pali,

On 7/30/21 3:05 PM, Pali Rohár wrote:
> 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.

No one screamed so far, so I was going to apply this one, but I just 
noticed a minor formatting issue; see below.

Thanks,

Alex

> 
> Signed-off-by: Pali Rohár <pali@kernel.org>
> 
> ---
> 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 771a9a470bf0..ecbae4f887c4 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    "                               Bnn" ", " 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
> +.B #include <asm/termbits.h>

Instead, just (with no "#include"):

.I <asm/termbits.h>

See man-pages(7):
    Formatting conventions (general)
        [...]

        Filenames  (whether  pathnames,  or  references  to  header
        files) are always in italics (e.g., <stdio.h>),  except  in
        the  SYNOPSIS  section,  where  included  files are in bold
        (e.g., #include <stdio.h>).  When referring to  a  standard
        header  file include, specify the header file surrounded by
        angle brackets, in the usual C way (e.g., <stdio.h>).


> +is different and incompatible with
> +.B struct termios
> +from
> +.BR "#include <termios.h>" .

ditto

> +These ioctl calls require
> +.B struct termios
> +from
> +.BR "#include <asm/termbits.h>" .

ditto

>   .SS Get and set terminal attributes
>   .TP
>   .B TCGETS
> 


-- 
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/