Messages in this thread Patch in this message | | | Date | Fri, 27 Oct 2006 13:16:12 +0200 | From | Martin Schwidefsky <> | Subject | [S390] termio <-> termios conversion error handling. |
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From: Heiko Carstens <heiko.carstens@de.ibm.com>
[S390] termio <-> termios conversion error handling.
Get rid of our own user_termio_to_kernel_termios() and kernel_termios_to_user_termio() macros which didn't check for errors on user space accesses. Instead use the generic functions which handle this properly. In addition the generic version of user_termio_to_kernel_termios() also copies the c_line member which was missing in our variant.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> ---
include/asm-s390/termios.h | 34 +--------------------------------- 1 files changed, 1 insertion(+), 33 deletions(-)
diff -urpN linux-2.6/include/asm-s390/termios.h linux-2.6-patched/include/asm-s390/termios.h --- linux-2.6/include/asm-s390/termios.h 2006-09-20 05:42:06.000000000 +0200 +++ linux-2.6-patched/include/asm-s390/termios.h 2006-10-27 11:26:16.000000000 +0200 @@ -75,39 +75,7 @@ struct termio { */ #define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0" -/* - * Translate a "termio" structure into a "termios". Ugh. - */ -#define SET_LOW_TERMIOS_BITS(termios, termio, x) { \ - unsigned short __tmp; \ - get_user(__tmp,&(termio)->x); \ - (termios)->x = (0xffff0000 & ((termios)->x)) | __tmp; \ -} - -#define user_termio_to_kernel_termios(termios, termio) \ -({ \ - SET_LOW_TERMIOS_BITS(termios, termio, c_iflag); \ - SET_LOW_TERMIOS_BITS(termios, termio, c_oflag); \ - SET_LOW_TERMIOS_BITS(termios, termio, c_cflag); \ - SET_LOW_TERMIOS_BITS(termios, termio, c_lflag); \ - copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \ -}) - -/* - * Translate a "termios" structure into a "termio". Ugh. - */ -#define kernel_termios_to_user_termio(termio, termios) \ -({ \ - put_user((termios)->c_iflag, &(termio)->c_iflag); \ - put_user((termios)->c_oflag, &(termio)->c_oflag); \ - put_user((termios)->c_cflag, &(termio)->c_cflag); \ - put_user((termios)->c_lflag, &(termio)->c_lflag); \ - put_user((termios)->c_line, &(termio)->c_line); \ - copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \ -}) - -#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)) +#include <asm-generic/termios.h> #endif /* __KERNEL__ */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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