ia64/linux-2.6.18-xen.hg

view include/asm-generic/termios.h @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
1 /* termios.h: generic termios/termio user copying/translation
2 */
4 #ifndef _ASM_GENERIC_TERMIOS_H
5 #define _ASM_GENERIC_TERMIOS_H
7 #include <asm/uaccess.h>
9 #ifndef __ARCH_TERMIO_GETPUT
11 /*
12 * Translate a "termio" structure into a "termios". Ugh.
13 */
14 static inline int user_termio_to_kernel_termios(struct termios *termios,
15 struct termio __user *termio)
16 {
17 unsigned short tmp;
19 if (get_user(tmp, &termio->c_iflag) < 0)
20 goto fault;
21 termios->c_iflag = (0xffff0000 & termios->c_iflag) | tmp;
23 if (get_user(tmp, &termio->c_oflag) < 0)
24 goto fault;
25 termios->c_oflag = (0xffff0000 & termios->c_oflag) | tmp;
27 if (get_user(tmp, &termio->c_cflag) < 0)
28 goto fault;
29 termios->c_cflag = (0xffff0000 & termios->c_cflag) | tmp;
31 if (get_user(tmp, &termio->c_lflag) < 0)
32 goto fault;
33 termios->c_lflag = (0xffff0000 & termios->c_lflag) | tmp;
35 if (get_user(termios->c_line, &termio->c_line) < 0)
36 goto fault;
38 if (copy_from_user(termios->c_cc, termio->c_cc, NCC) != 0)
39 goto fault;
41 return 0;
43 fault:
44 return -EFAULT;
45 }
47 /*
48 * Translate a "termios" structure into a "termio". Ugh.
49 */
50 static inline int kernel_termios_to_user_termio(struct termio __user *termio,
51 struct termios *termios)
52 {
53 if (put_user(termios->c_iflag, &termio->c_iflag) < 0 ||
54 put_user(termios->c_oflag, &termio->c_oflag) < 0 ||
55 put_user(termios->c_cflag, &termio->c_cflag) < 0 ||
56 put_user(termios->c_lflag, &termio->c_lflag) < 0 ||
57 put_user(termios->c_line, &termio->c_line) < 0 ||
58 copy_to_user(termio->c_cc, termios->c_cc, NCC) != 0)
59 return -EFAULT;
61 return 0;
62 }
64 #define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios))
65 #define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios))
67 #endif /* __ARCH_TERMIO_GETPUT */
69 #endif /* _ASM_GENERIC_TERMIOS_H */