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TOMOYO Linux Cross Reference
Linux/include/asm-generic/termios.h

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  1 #ifndef _ASM_GENERIC_TERMIOS_H
  2 #define _ASM_GENERIC_TERMIOS_H
  3 /*
  4  * Most architectures have straight copies of the x86 code, with
  5  * varying levels of bug fixes on top. Usually it's a good idea
  6  * to use this generic version instead, but be careful to avoid
  7  * ABI changes.
  8  * New architectures should not provide their own version.
  9  */
 10 
 11 #include <asm/termbits.h>
 12 #include <asm/ioctls.h>
 13 
 14 struct winsize {
 15         unsigned short ws_row;
 16         unsigned short ws_col;
 17         unsigned short ws_xpixel;
 18         unsigned short ws_ypixel;
 19 };
 20 
 21 #define NCC 8
 22 struct termio {
 23         unsigned short c_iflag;         /* input mode flags */
 24         unsigned short c_oflag;         /* output mode flags */
 25         unsigned short c_cflag;         /* control mode flags */
 26         unsigned short c_lflag;         /* local mode flags */
 27         unsigned char c_line;           /* line discipline */
 28         unsigned char c_cc[NCC];        /* control characters */
 29 };
 30 
 31 /* modem lines */
 32 #define TIOCM_LE        0x001
 33 #define TIOCM_DTR       0x002
 34 #define TIOCM_RTS       0x004
 35 #define TIOCM_ST        0x008
 36 #define TIOCM_SR        0x010
 37 #define TIOCM_CTS       0x020
 38 #define TIOCM_CAR       0x040
 39 #define TIOCM_RNG       0x080
 40 #define TIOCM_DSR       0x100
 41 #define TIOCM_CD        TIOCM_CAR
 42 #define TIOCM_RI        TIOCM_RNG
 43 #define TIOCM_OUT1      0x2000
 44 #define TIOCM_OUT2      0x4000
 45 #define TIOCM_LOOP      0x8000
 46 
 47 /* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
 48 
 49 #ifdef __KERNEL__
 50 
 51 #include <asm/uaccess.h>
 52 
 53 /*      intr=^C         quit=^\         erase=del       kill=^U
 54         eof=^D          vtime=\0        vmin=\1         sxtc=\0
 55         start=^Q        stop=^S         susp=^Z         eol=\0
 56         reprint=^R      discard=^U      werase=^W       lnext=^V
 57         eol2=\0
 58 */
 59 #define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
 60 
 61 /*
 62  * Translate a "termio" structure into a "termios". Ugh.
 63  */
 64 static inline int user_termio_to_kernel_termios(struct ktermios *termios,
 65                                                 const struct termio __user *termio)
 66 {
 67         unsigned short tmp;
 68 
 69         if (get_user(tmp, &termio->c_iflag) < 0)
 70                 goto fault;
 71         termios->c_iflag = (0xffff0000 & termios->c_iflag) | tmp;
 72 
 73         if (get_user(tmp, &termio->c_oflag) < 0)
 74                 goto fault;
 75         termios->c_oflag = (0xffff0000 & termios->c_oflag) | tmp;
 76 
 77         if (get_user(tmp, &termio->c_cflag) < 0)
 78                 goto fault;
 79         termios->c_cflag = (0xffff0000 & termios->c_cflag) | tmp;
 80 
 81         if (get_user(tmp, &termio->c_lflag) < 0)
 82                 goto fault;
 83         termios->c_lflag = (0xffff0000 & termios->c_lflag) | tmp;
 84 
 85         if (get_user(termios->c_line, &termio->c_line) < 0)
 86                 goto fault;
 87 
 88         if (copy_from_user(termios->c_cc, termio->c_cc, NCC) != 0)
 89                 goto fault;
 90 
 91         return 0;
 92 
 93  fault:
 94         return -EFAULT;
 95 }
 96 
 97 /*
 98  * Translate a "termios" structure into a "termio". Ugh.
 99  */
100 static inline int kernel_termios_to_user_termio(struct termio __user *termio,
101                                                 struct ktermios *termios)
102 {
103         if (put_user(termios->c_iflag, &termio->c_iflag) < 0 ||
104             put_user(termios->c_oflag, &termio->c_oflag) < 0 ||
105             put_user(termios->c_cflag, &termio->c_cflag) < 0 ||
106             put_user(termios->c_lflag, &termio->c_lflag) < 0 ||
107             put_user(termios->c_line,  &termio->c_line) < 0 ||
108             copy_to_user(termio->c_cc, termios->c_cc, NCC) != 0)
109                 return -EFAULT;
110 
111         return 0;
112 }
113 
114 #ifdef TCGETS2
115 static inline int user_termios_to_kernel_termios(struct ktermios *k,
116                                                  struct termios2 __user *u)
117 {
118         return copy_from_user(k, u, sizeof(struct termios2));
119 }
120 
121 static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
122                                                  struct ktermios *k)
123 {
124         return copy_to_user(u, k, sizeof(struct termios2));
125 }
126 
127 static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
128                                                    struct termios __user *u)
129 {
130         return copy_from_user(k, u, sizeof(struct termios));
131 }
132 
133 static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
134                                                    struct ktermios *k)
135 {
136         return copy_to_user(u, k, sizeof(struct termios));
137 }
138 #else /* TCGETS2 */
139 static inline int user_termios_to_kernel_termios(struct ktermios *k,
140                                                  struct termios __user *u)
141 {
142         return copy_from_user(k, u, sizeof(struct termios));
143 }
144 
145 static inline int kernel_termios_to_user_termios(struct termios __user *u,
146                                                  struct ktermios *k)
147 {
148         return copy_to_user(u, k, sizeof(struct termios));
149 }
150 #endif /* TCGETS2 */
151 
152 #endif  /* __KERNEL__ */
153 
154 #endif /* _ASM_GENERIC_TERMIOS_H */
155 

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