diff options
Diffstat (limited to 'arch/sparc/include/asm/checksum_32.h')
| -rw-r--r-- | arch/sparc/include/asm/checksum_32.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/sparc/include/asm/checksum_32.h b/arch/sparc/include/asm/checksum_32.h index 5fc98d80b03b..479a0b812af5 100644 --- a/arch/sparc/include/asm/checksum_32.h +++ b/arch/sparc/include/asm/checksum_32.h @@ -60,7 +60,7 @@ csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum) } static inline __wsum -csum_partial_copy_from_user(const void __user *src, void *dst, int len, +csum_and_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err) { register unsigned long ret asm("o0") = (unsigned long)src; @@ -68,6 +68,12 @@ csum_partial_copy_from_user(const void __user *src, void *dst, int len, register int l asm("g1") = len; register __wsum s asm("g7") = sum; + if (unlikely(!access_ok(src, len))) { + if (len) + *err = -EFAULT; + return sum; + } + __asm__ __volatile__ ( ".section __ex_table,#alloc\n\t" ".align 4\n\t" @@ -83,8 +89,10 @@ csum_partial_copy_from_user(const void __user *src, void *dst, int len, return (__force __wsum)ret; } +#define HAVE_CSUM_COPY_USER + static inline __wsum -csum_partial_copy_to_user(const void *src, void __user *dst, int len, +csum_and_copy_to_user(const void *src, void __user *dst, int len, __wsum sum, int *err) { if (!access_ok(dst, len)) { @@ -113,9 +121,6 @@ csum_partial_copy_to_user(const void *src, void __user *dst, int len, } } -#define HAVE_CSUM_COPY_USER -#define csum_and_copy_to_user csum_partial_copy_to_user - /* ihl is always 5 or greater, almost always is 5, and iph is word aligned * the majority of the time. */ |