linux-stable/arch/alpha/include/uapi/asm/termbits.h

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License cleanup: add SPDX license identifier to uapi header files with no license Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 14:08:43 +00:00
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _ALPHA_TERMBITS_H
#define _ALPHA_TERMBITS_H
#include <asm-generic/termbits-common.h>
typedef unsigned int tcflag_t;
/*
* termios type and macro definitions. Be careful about adding stuff
* to this file since it's used in GNU libc and there are strict rules
* concerning namespace pollution.
*/
#define NCCS 19
struct termios {
tcflag_t c_iflag; /* input mode flags */
tcflag_t c_oflag; /* output mode flags */
tcflag_t c_cflag; /* control mode flags */
tcflag_t c_lflag; /* local mode flags */
cc_t c_cc[NCCS]; /* control characters */
cc_t c_line; /* line discipline (== c_cc[19]) */
speed_t c_ispeed; /* input speed */
speed_t c_ospeed; /* output speed */
};
arch/alpha, termios: implement BOTHER, IBSHIFT and termios2 Alpha has had c_ispeed and c_ospeed, but still set speeds in c_cflags using arbitrary flags. Because BOTHER is not defined, the general Linux code doesn't allow setting arbitrary baud rates, and because CBAUDEX == 0, we can have an array overrun of the baud_rate[] table in drivers/tty/tty_baudrate.c if (c_cflags & CBAUD) == 037. Resolve both problems by #defining BOTHER to 037 on Alpha. However, userspace still needs to know if setting BOTHER is actually safe given legacy kernels (does anyone actually care about that on Alpha anymore?), so enable the TCGETS2/TCSETS*2 ioctls on Alpha, even though they use the same structure. Define struct termios2 just for compatibility; it is the exact same structure as struct termios. In a future patchset, this will be cleaned up so the uapi headers are usable from libc. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com> Cc: Jiri Slaby <jslaby@suse.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Eugene Syromiatnikov <esyr@redhat.com> Cc: <linux-alpha@vger.kernel.org> Cc: <linux-serial@vger.kernel.org> Cc: Johan Hovold <johan@kernel.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-22 16:19:05 +00:00
/* Alpha has identical termios and termios2 */
struct termios2 {
tcflag_t c_iflag; /* input mode flags */
tcflag_t c_oflag; /* output mode flags */
tcflag_t c_cflag; /* control mode flags */
tcflag_t c_lflag; /* local mode flags */
cc_t c_cc[NCCS]; /* control characters */
cc_t c_line; /* line discipline (== c_cc[19]) */
speed_t c_ispeed; /* input speed */
speed_t c_ospeed; /* output speed */
};
/* Alpha has matching termios and ktermios */
struct ktermios {
tcflag_t c_iflag; /* input mode flags */
tcflag_t c_oflag; /* output mode flags */
tcflag_t c_cflag; /* control mode flags */
tcflag_t c_lflag; /* local mode flags */
cc_t c_cc[NCCS]; /* control characters */
cc_t c_line; /* line discipline (== c_cc[19]) */
speed_t c_ispeed; /* input speed */
speed_t c_ospeed; /* output speed */
};
/* c_cc characters */
#define VEOF 0
#define VEOL 1
#define VEOL2 2
#define VERASE 3
#define VWERASE 4
#define VKILL 5
#define VREPRINT 6
#define VSWTC 7
#define VINTR 8
#define VQUIT 9
#define VSUSP 10
#define VSTART 12
#define VSTOP 13
#define VLNEXT 14
#define VDISCARD 15
#define VMIN 16
#define VTIME 17
/* c_iflag bits */
#define IXON 0x0200
#define IXOFF 0x0400
#define IUCLC 0x1000
#define IMAXBEL 0x2000
#define IUTF8 0x4000
/* c_oflag bits */
#define ONLCR 0x00002
#define OLCUC 0x00004
#define NLDLY 0x00300
#define NL0 0x00000
#define NL1 0x00100
#define NL2 0x00200
#define NL3 0x00300
#define TABDLY 0x00c00
#define TAB0 0x00000
#define TAB1 0x00400
#define TAB2 0x00800
#define TAB3 0x00c00
#define CRDLY 0x03000
#define CR0 0x00000
#define CR1 0x01000
#define CR2 0x02000
#define CR3 0x03000
#define FFDLY 0x04000
#define FF0 0x00000
#define FF1 0x04000
#define BSDLY 0x08000
#define BS0 0x00000
#define BS1 0x08000
#define VTDLY 0x10000
#define VT0 0x00000
#define VT1 0x10000
/*
* Should be equivalent to TAB3, see description of TAB3 in
* POSIX.1-2008, Ch. 11.2.3 "Output Modes"
*/
#define XTABS TAB3
/* c_cflag bit meaning */
#define CBAUD 0x0000001f
#define CBAUDEX 0x00000000
#define BOTHER 0x0000001f
#define B57600 0x00000010
#define B115200 0x00000011
#define B230400 0x00000012
#define B460800 0x00000013
#define B500000 0x00000014
#define B576000 0x00000015
#define B921600 0x00000016
#define B1000000 0x00000017
#define B1152000 0x00000018
#define B1500000 0x00000019
#define B2000000 0x0000001a
#define B2500000 0x0000001b
#define B3000000 0x0000001c
#define B3500000 0x0000001d
#define B4000000 0x0000001e
#define CSIZE 0x00000300
#define CS5 0x00000000
#define CS6 0x00000100
#define CS7 0x00000200
#define CS8 0x00000300
#define CSTOPB 0x00000400
#define CREAD 0x00000800
#define PARENB 0x00001000
#define PARODD 0x00002000
#define HUPCL 0x00004000
#define CLOCAL 0x00008000
#define CIBAUD 0x001f0000
arch/alpha, termios: implement BOTHER, IBSHIFT and termios2 Alpha has had c_ispeed and c_ospeed, but still set speeds in c_cflags using arbitrary flags. Because BOTHER is not defined, the general Linux code doesn't allow setting arbitrary baud rates, and because CBAUDEX == 0, we can have an array overrun of the baud_rate[] table in drivers/tty/tty_baudrate.c if (c_cflags & CBAUD) == 037. Resolve both problems by #defining BOTHER to 037 on Alpha. However, userspace still needs to know if setting BOTHER is actually safe given legacy kernels (does anyone actually care about that on Alpha anymore?), so enable the TCGETS2/TCSETS*2 ioctls on Alpha, even though they use the same structure. Define struct termios2 just for compatibility; it is the exact same structure as struct termios. In a future patchset, this will be cleaned up so the uapi headers are usable from libc. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com> Cc: Jiri Slaby <jslaby@suse.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Eugene Syromiatnikov <esyr@redhat.com> Cc: <linux-alpha@vger.kernel.org> Cc: <linux-serial@vger.kernel.org> Cc: Johan Hovold <johan@kernel.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-22 16:19:05 +00:00
/* c_lflag bits */
#define ISIG 0x00000080
#define ICANON 0x00000100
#define XCASE 0x00004000
#define ECHO 0x00000008
#define ECHOE 0x00000002
#define ECHOK 0x00000004
#define ECHONL 0x00000010
#define NOFLSH 0x80000000
#define TOSTOP 0x00400000
#define ECHOCTL 0x00000040
#define ECHOPRT 0x00000020
#define ECHOKE 0x00000001
#define FLUSHO 0x00800000
#define PENDIN 0x20000000
#define IEXTEN 0x00000400
tty: Add EXTPROC support for LINEMODE This patch is against the 2.6.34 source. Paraphrased from the 1989 BSD patch by David Borman @ cray.com: These are the changes needed for the kernel to support LINEMODE in the server. There is a new bit in the termios local flag word, EXTPROC. When this bit is set, several aspects of the terminal driver are disabled. Input line editing, character echo, and mapping of signals are all disabled. This allows the telnetd to turn off these functions when in linemode, but still keep track of what state the user wants the terminal to be in. New ioctl: TIOCSIG Generate a signal to processes in the current process group of the pty. There is a new mode for packet driver, the TIOCPKT_IOCTL bit. When packet mode is turned on in the pty, and the EXTPROC bit is set, then whenever the state of the pty is changed, the next read on the master side of the pty will have the TIOCPKT_IOCTL bit set. This allows the process on the server side of the pty to know when the state of the terminal has changed; it can then issue the appropriate ioctl to retrieve the new state. Since the original BSD patches accompanied the source code for telnet I've left that reference here, but obviously the feature is useful for any remote terminal protocol, including ssh. The corresponding feature has existed in the BSD tty driver since 1989. For historical reference, a good copy of the relevant files can be found here: http://anonsvn.mit.edu/viewvc/krb5/trunk/src/appl/telnet/?pathrev=17741 Signed-off-by: Howard Chu <hyc@symas.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-06-22 17:14:49 +00:00
#define EXTPROC 0x10000000
/* Values for the OPTIONAL_ACTIONS argument to `tcsetattr'. */
#define TCSANOW 0
#define TCSADRAIN 1
#define TCSAFLUSH 2
#endif /* _ALPHA_TERMBITS_H */