From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: linux-kernel@vger.kernel.org, heiko.carstens@de.ibm.com
Subject: [S390] termio <-> termios conversion error handling.
Date: Mon, 4 Dec 2006 15:51:18 +0100 [thread overview]
Message-ID: <20061204145118.GG32059@skybase> (raw)
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 2006-11-29 22:57:37.000000000 +0100
+++ linux-2.6-patched/include/asm-s390/termios.h 2006-12-04 14:50:36.000000000 +0100
@@ -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__ */
next reply other threads:[~2006-12-04 14:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-04 14:51 Martin Schwidefsky [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-10-27 11:16 [S390] termio <-> termios conversion error handling Martin Schwidefsky
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