Merge branch 'linus' into x86/xen

1 files changed, 146 insertions, 0 deletions

diff --git a/arch/alpha/include/asm/termios.h b/arch/alpha/include/asm/termios.h
new file mode 100644
index 00000000000..fa13716a11c
--- /dev/null
+++ b/arch/alpha/include/asm/termios.h
@@ -0,0 +1,146 @@
+#ifndef _ALPHA_TERMIOS_H
+#define _ALPHA_TERMIOS_H
+
+#include <asm/ioctls.h>
+#include <asm/termbits.h>
+
+struct sgttyb {
+	char	sg_ispeed;
+	char	sg_ospeed;
+	char	sg_erase;
+	char	sg_kill;
+	short	sg_flags;
+};
+
+struct tchars {
+	char	t_intrc;
+	char	t_quitc;
+	char	t_startc;
+	char	t_stopc;
+	char	t_eofc;
+	char	t_brkc;
+};
+
+struct ltchars {
+	char	t_suspc;
+	char	t_dsuspc;
+	char	t_rprntc;
+	char	t_flushc;
+	char	t_werasc;
+	char	t_lnextc;
+};
+
+struct winsize {
+	unsigned short ws_row;
+	unsigned short ws_col;
+	unsigned short ws_xpixel;
+	unsigned short ws_ypixel;
+};
+
+#define NCC 8
+struct termio {
+	unsigned short c_iflag;		/* input mode flags */
+	unsigned short c_oflag;		/* output mode flags */
+	unsigned short c_cflag;		/* control mode flags */
+	unsigned short c_lflag;		/* local mode flags */
+	unsigned char c_line;		/* line discipline */
+	unsigned char c_cc[NCC];	/* control characters */
+};
+
+/*
+ * c_cc characters in the termio structure.  Oh, how I love being
+ * backwardly compatible.  Notice that character 4 and 5 are
+ * interpreted differently depending on whether ICANON is set in
+ * c_lflag.  If it's set, they are used as _VEOF and _VEOL, otherwise
+ * as _VMIN and V_TIME.  This is for compatibility with OSF/1 (which
+ * is compatible with sysV)...
+ */
+#define _VINTR	0
+#define _VQUIT	1
+#define _VERASE	2
+#define _VKILL	3
+#define _VEOF	4
+#define _VMIN	4
+#define _VEOL	5
+#define _VTIME	5
+#define _VEOL2	6
+#define _VSWTC	7
+
+#ifdef __KERNEL__
+/*	eof=^D		eol=\0		eol2=\0		erase=del
+	werase=^W	kill=^U		reprint=^R	sxtc=\0
+	intr=^C		quit=^\		susp=^Z		<OSF/1 VDSUSP>
+	start=^Q	stop=^S		lnext=^V	discard=^U
+	vmin=\1		vtime=\0
+*/
+#define INIT_C_CC "\004\000\000\177\027\025\022\000\003\034\032\000\021\023\026\025\001\000"
+
+/*
+ * Translate a "termio" structure into a "termios". Ugh.
+ */
+
+#define user_termio_to_kernel_termios(a_termios, u_termio)			\
+({										\
+	struct ktermios *k_termios = (a_termios);				\
+	struct termio k_termio;							\
+	int canon, ret;								\
+										\
+	ret = copy_from_user(&k_termio, u_termio, sizeof(k_termio));		\
+	if (!ret) {								\
+		/* Overwrite only the low bits.  */				\
+		*(unsigned short *)&k_termios->c_iflag = k_termio.c_iflag;	\
+		*(unsigned short *)&k_termios->c_oflag = k_termio.c_oflag;	\
+		*(unsigned short *)&k_termios->c_cflag = k_termio.c_cflag;	\
+		*(unsigned short *)&k_termios->c_lflag = k_termio.c_lflag;	\
+		canon = k_termio.c_lflag & ICANON;				\
+										\
+		k_termios->c_cc[VINTR]  = k_termio.c_cc[_VINTR];		\
+		k_termios->c_cc[VQUIT]  = k_termio.c_cc[_VQUIT];		\
+		k_termios->c_cc[VERASE] = k_termio.c_cc[_VERASE];		\
+		k_termios->c_cc[VKILL]  = k_termio.c_cc[_VKILL];		\
+		k_termios->c_cc[VEOL2]  = k_termio.c_cc[_VEOL2];		\
+		k_termios->c_cc[VSWTC]  = k_termio.c_cc[_VSWTC];		\
+		k_termios->c_cc[canon ? VEOF : VMIN]  = k_termio.c_cc[_VEOF];	\
+		k_termios->c_cc[canon ? VEOL : VTIME] = k_termio.c_cc[_VEOL];	\
+	}									\
+	ret;									\
+})
+
+/*
+ * Translate a "termios" structure into a "termio". Ugh.
+ *
+ * Note the "fun" _VMIN overloading.
+ */
+#define kernel_termios_to_user_termio(u_termio, a_termios)		\
+({									\
+	struct ktermios *k_termios = (a_termios);			\
+	struct termio k_termio;						\
+	int canon;							\
+									\
+	k_termio.c_iflag = k_termios->c_iflag;				\
+	k_termio.c_oflag = k_termios->c_oflag;				\
+	k_termio.c_cflag = k_termios->c_cflag;				\
+	canon = (k_termio.c_lflag = k_termios->c_lflag) & ICANON;	\
+									\
+	k_termio.c_line = k_termios->c_line;				\
+	k_termio.c_cc[_VINTR]  = k_termios->c_cc[VINTR];		\
+	k_termio.c_cc[_VQUIT]  = k_termios->c_cc[VQUIT];		\
+	k_termio.c_cc[_VERASE] = k_termios->c_cc[VERASE];		\
+	k_termio.c_cc[_VKILL]  = k_termios->c_cc[VKILL];		\
+	k_termio.c_cc[_VEOF]   = k_termios->c_cc[canon ? VEOF : VMIN];	\
+	k_termio.c_cc[_VEOL]   = k_termios->c_cc[canon ? VEOL : VTIME];	\
+	k_termio.c_cc[_VEOL2]  = k_termios->c_cc[VEOL2];		\
+	k_termio.c_cc[_VSWTC]  = k_termios->c_cc[VSWTC];		\
+									\
+	copy_to_user(u_termio, &k_termio, sizeof(k_termio));		\
+})
+
+#define user_termios_to_kernel_termios(k, u) \
+	copy_from_user(k, u, sizeof(struct termios))
+
+#define kernel_termios_to_user_termios(u, k) \
+	copy_to_user(u, k, sizeof(struct termios))
+
+#endif	/* __KERNEL__ */
+
+#endif	/* _ALPHA_TERMIOS_H */