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parisc: add strict copy size checks (v2)

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Add CONFIG_DEBUG_STRICT_USER_COPY_CHECKS, copied from the x86
implementation. Tested with 32 and 64bit kernel.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
This commit is contained in:
Helge Deller
2010-02-01 19:56:33 +00:00
committed by Kyle McMartin
parent a3bee03e71
commit 888c31fc83
3 changed files with 41 additions and 3 deletions
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3
arch/parisc/lib/memcpy.c
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@@ -475,7 +475,8 @@ unsigned long copy_to_user(void __user *dst, const void *src, unsigned long len)
return pa_memcpy((void __force *)dst, src, len);
}
unsigned long copy_from_user(void *dst, const void __user *src, unsigned long len)
EXPORT_SYMBOL(__copy_from_user);
unsigned long __copy_from_user(void *dst, const void __user *src, unsigned long len)
{
mtsp(get_user_space(), 1);
mtsp(get_kernel_space(), 2);