diff options
| author | Vegard Nossum <vegard.nossum@gmail.com> | 2009-06-15 15:50:49 +0200 |
|---|---|---|
| committer | Vegard Nossum <vegard.nossum@gmail.com> | 2009-06-15 15:50:49 +0200 |
| commit | 722f2a6c87f34ee0fd0130a8cf45f81e0705594a (patch) | |
| tree | 50b054df34d2731eb0ba0cf1a6c27e43e7eed428 /include/asm-generic/termios-base.h | |
| parent | 7a0aeb14e18ad59394bd9bbc6e57fb345819e748 (diff) | |
| parent | 45e3e1935e2857c54783291107d33323b3ef33c8 (diff) | |
Merge commit 'linus/master' into HEAD
Conflicts:
MAINTAINERS
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Diffstat (limited to 'include/asm-generic/termios-base.h')
| -rw-r--r-- | include/asm-generic/termios-base.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/include/asm-generic/termios-base.h b/include/asm-generic/termios-base.h new file mode 100644 index 000000000000..0a769feb22b0 --- /dev/null +++ b/include/asm-generic/termios-base.h @@ -0,0 +1,77 @@ +/* termios.h: generic termios/termio user copying/translation + */ + +#ifndef _ASM_GENERIC_TERMIOS_BASE_H +#define _ASM_GENERIC_TERMIOS_BASE_H + +#include <asm/uaccess.h> + +#ifndef __ARCH_TERMIO_GETPUT + +/* + * Translate a "termio" structure into a "termios". Ugh. + */ +static inline int user_termio_to_kernel_termios(struct ktermios *termios, + struct termio __user *termio) +{ + unsigned short tmp; + + if (get_user(tmp, &termio->c_iflag) < 0) + goto fault; + termios->c_iflag = (0xffff0000 & termios->c_iflag) | tmp; + + if (get_user(tmp, &termio->c_oflag) < 0) + goto fault; + termios->c_oflag = (0xffff0000 & termios->c_oflag) | tmp; + + if (get_user(tmp, &termio->c_cflag) < 0) + goto fault; + termios->c_cflag = (0xffff0000 & termios->c_cflag) | tmp; + + if (get_user(tmp, &termio->c_lflag) < 0) + goto fault; + termios->c_lflag = (0xffff0000 & termios->c_lflag) | tmp; + + if (get_user(termios->c_line, &termio->c_line) < 0) + goto fault; + + if (copy_from_user(termios->c_cc, termio->c_cc, NCC) != 0) + goto fault; + + return 0; + + fault: + return -EFAULT; +} + +/* + * Translate a "termios" structure into a "termio". Ugh. + */ +static inline int kernel_termios_to_user_termio(struct termio __user *termio, + struct ktermios *termios) +{ + if (put_user(termios->c_iflag, &termio->c_iflag) < 0 || + put_user(termios->c_oflag, &termio->c_oflag) < 0 || + put_user(termios->c_cflag, &termio->c_cflag) < 0 || + put_user(termios->c_lflag, &termio->c_lflag) < 0 || + put_user(termios->c_line, &termio->c_line) < 0 || + copy_to_user(termio->c_cc, termios->c_cc, NCC) != 0) + return -EFAULT; + + return 0; +} + +#ifndef user_termios_to_kernel_termios +#define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios)) +#endif + +#ifndef kernel_termios_to_user_termios +#define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios)) +#endif + +#define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios)) +#define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios)) + +#endif /* __ARCH_TERMIO_GETPUT */ + +#endif /* _ASM_GENERIC_TERMIOS_BASE_H */ |