From: Pavel Machek <pavel@ucw.cz>
To: torvalds@transmeta.com,
kernel list <linux-kernel@vger.kernel.org>,
Rusty trivial patch monkey Russell <trivial@rustcorp.com.au>
Subject: Provide example copy_in_user implementation
Date: Tue, 24 Jun 2003 12:06:10 +0200 [thread overview]
Message-ID: <20030624100610.GC159@elf.ucw.cz> (raw)
Hi!
This patch adds example copy_in_user implementation (copy_in_user is
needed for new ioctl32 implementation, all 64bit archs will need
it)... Please apply,
Pavel
Index: linux/include/asm-generic/uaccess.h
===================================================================
--- linux.orig/include/asm-generic/uaccess.h 2003-06-17 17:10:44.000000000 +0200
+++ linux/include/asm-generic/uaccess.h 2003-06-16 16:09:52.000000000 +0200
@@ -0,0 +1,13 @@
+static inline unsigned long copy_in_user(void *dst, const void *src, unsigned size)
+{
+ unsigned i, ret;
+ unsigned char c;
+ for (i=0; i<size; i++) {
+ if (copy_from_user(&c, src+i, 1))
+ return size-i;
+ if (copy_to_user(dst+i, &c, 1))
+ return size-i;
+ }
+ return 0;
+}
+
--
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
next reply other threads:[~2003-06-24 9:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-24 10:06 Pavel Machek [this message]
2003-06-24 10:18 ` Provide example copy_in_user implementation Russell King
2003-06-24 10:25 ` Pavel Machek
2003-06-24 11:01 ` Russell King
2003-06-24 18:52 ` Linus Torvalds
2003-06-24 10:29 ` Andrew Morton
2003-06-24 10:33 ` Pavel Machek
2003-06-24 18:51 ` Linus Torvalds
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