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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2007-10-16 23:27:04 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 08:42:52 -0700
commit04c71976500352d02f60616d2b960267d8c5fe24 (patch)
treeed0d84a533e26a2c9f18d53413d183252e1d925f /drivers/s390/char
parentabdbf94d7c6f1fcb2931d5cb7562a6159323b704 (diff)
unicode diacritics support
There have been issues with non-latin1 diacritics and unicode. http://bugzilla.kernel.org/show_bug.cgi?id=7746 Git 759448f459234bfcf34b82471f0dba77a9aca498 `Kernel utf-8 handling' partly resolved it by adding conversion between diacritics and unicode. The patch below goes further by just turning diacritics into unicode, hence providing better future support. The kbd support can be fetched from http://bugzilla.kernel.org/attachment.cgi?id=12313 This was tested in all of latin1, latin9, latin2 and unicode with french and czech dead keys. Turn the kernel accent_table into unicode, and extend ioctls KDGKBDIACR and KDSKBDIACR into their equivalents KDGKBDIACRUC and KDSKBDIACR. New function int conv_uni_to_8bit(u32 uni) for converting unicode into 8bit _input_. No, we don't want to store the translation, as it is potentially sparse and large. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Jan Engelhardt <jengelh@gmx.de> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/s390/char')
-rw-r--r--drivers/s390/char/defkeymap.c2
-rw-r--r--drivers/s390/char/keyboard.c66
-rw-r--r--drivers/s390/char/keyboard.h4
3 files changed, 58 insertions, 14 deletions
diff --git a/drivers/s390/char/defkeymap.c b/drivers/s390/char/defkeymap.c
index 564baca01b7c..389346cda6c8 100644
--- a/drivers/s390/char/defkeymap.c
+++ b/drivers/s390/char/defkeymap.c
@@ -150,7 +150,7 @@ char *func_table[MAX_NR_FUNC] = {
NULL,
};
-struct kbdiacr accent_table[MAX_DIACR] = {
+struct kbdiacruc accent_table[MAX_DIACR] = {
{'^', 'c', '\003'}, {'^', 'd', '\004'},
{'^', 'z', '\032'}, {'^', '\012', '\000'},
};
diff --git a/drivers/s390/char/keyboard.c b/drivers/s390/char/keyboard.c
index f62f9a4e8950..cee4d4e42429 100644
--- a/drivers/s390/char/keyboard.c
+++ b/drivers/s390/char/keyboard.c
@@ -11,6 +11,7 @@
#include <linux/sched.h>
#include <linux/sysrq.h>
+#include <linux/consolemap.h>
#include <linux/kbd_kern.h>
#include <linux/kbd_diacr.h>
#include <asm/uaccess.h>
@@ -82,11 +83,11 @@ kbd_alloc(void) {
if (!kbd->fn_handler)
goto out_func;
kbd->accent_table =
- kmalloc(sizeof(struct kbdiacr)*MAX_DIACR, GFP_KERNEL);
+ kmalloc(sizeof(struct kbdiacruc)*MAX_DIACR, GFP_KERNEL);
if (!kbd->accent_table)
goto out_fn_handler;
memcpy(kbd->accent_table, accent_table,
- sizeof(struct kbdiacr)*MAX_DIACR);
+ sizeof(struct kbdiacruc)*MAX_DIACR);
kbd->accent_table_size = accent_table_size;
return kbd;
@@ -183,8 +184,8 @@ kbd_ebcasc(struct kbd_data *kbd, unsigned char *ebcasc)
* Otherwise, conclude that DIACR was not combining after all,
* queue it and return CH.
*/
-static unsigned char
-handle_diacr(struct kbd_data *kbd, unsigned char ch)
+static unsigned int
+handle_diacr(struct kbd_data *kbd, unsigned int ch)
{
int i, d;
@@ -460,7 +461,6 @@ int
kbd_ioctl(struct kbd_data *kbd, struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct kbdiacrs __user *a;
void __user *argp;
int ct, perm;
@@ -481,17 +481,40 @@ kbd_ioctl(struct kbd_data *kbd, struct file *file,
case KDSKBSENT:
return do_kdgkb_ioctl(kbd, argp, cmd, perm);
case KDGKBDIACR:
- a = argp;
+ {
+ struct kbdiacrs __user *a = argp;
+ struct kbdiacr diacr;
+ int i;
if (put_user(kbd->accent_table_size, &a->kb_cnt))
return -EFAULT;
+ for (i = 0; i < kbd->accent_table_size; i++) {
+ diacr.diacr = kbd->accent_table[i].diacr;
+ diacr.base = kbd->accent_table[i].base;
+ diacr.result = kbd->accent_table[i].result;
+ if (copy_to_user(a->kbdiacr + i, &diacr, sizeof(struct kbdiacr)))
+ return -EFAULT;
+ }
+ return 0;
+ }
+ case KDGKBDIACRUC:
+ {
+ struct kbdiacrsuc __user *a = argp;
+
ct = kbd->accent_table_size;
- if (copy_to_user(a->kbdiacr, kbd->accent_table,
- ct * sizeof(struct kbdiacr)))
+ if (put_user(ct, &a->kb_cnt))
+ return -EFAULT;
+ if (copy_to_user(a->kbdiacruc, kbd->accent_table,
+ ct * sizeof(struct kbdiacruc)))
return -EFAULT;
return 0;
+ }
case KDSKBDIACR:
- a = argp;
+ {
+ struct kbdiacrs __user *a = argp;
+ struct kbdiacr diacr;
+ int i;
+
if (!perm)
return -EPERM;
if (get_user(ct, &a->kb_cnt))
@@ -499,10 +522,31 @@ kbd_ioctl(struct kbd_data *kbd, struct file *file,
if (ct >= MAX_DIACR)
return -EINVAL;
kbd->accent_table_size = ct;
- if (copy_from_user(kbd->accent_table, a->kbdiacr,
- ct * sizeof(struct kbdiacr)))
+ for (i = 0; i < ct; i++) {
+ if (copy_from_user(&diacr, a->kbdiacr + i, sizeof(struct kbdiacr)))
+ return -EFAULT;
+ kbd->accent_table[i].diacr = diacr.diacr;
+ kbd->accent_table[i].base = diacr.base;
+ kbd->accent_table[i].result = diacr.result;
+ }
+ return 0;
+ }
+ case KDSKBDIACRUC:
+ {
+ struct kbdiacrsuc __user *a = argp;
+
+ if (!perm)
+ return -EPERM;
+ if (get_user(ct, &a->kb_cnt))
+ return -EFAULT;
+ if (ct >= MAX_DIACR)
+ return -EINVAL;
+ kbd->accent_table_size = ct;
+ if (copy_from_user(kbd->accent_table, a->kbdiacruc,
+ ct * sizeof(struct kbdiacruc)))
return -EFAULT;
return 0;
+ }
default:
return -ENOIOCTLCMD;
}
diff --git a/drivers/s390/char/keyboard.h b/drivers/s390/char/keyboard.h
index f7bf45c6bf0d..5ccfe9cf126d 100644
--- a/drivers/s390/char/keyboard.h
+++ b/drivers/s390/char/keyboard.h
@@ -25,9 +25,9 @@ struct kbd_data {
unsigned short **key_maps;
char **func_table;
fn_handler_fn **fn_handler;
- struct kbdiacr *accent_table;
+ struct kbdiacruc *accent_table;
unsigned int accent_table_size;
- unsigned char diacr;
+ unsigned int diacr;
unsigned short sysrq;
};