37 lines
1 KiB
C
37 lines
1 KiB
C
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#include "asm/uaccess.h"
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#include "linux/errno.h"
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#include "linux/module.h"
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unsigned int arch_csum_partial(const unsigned char *buff, int len, int sum);
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unsigned int csum_partial(unsigned char *buff, int len, int sum)
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{
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return arch_csum_partial(buff, len, sum);
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}
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EXPORT_SYMBOL(csum_partial);
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unsigned int csum_partial_copy_to(const unsigned char *src,
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unsigned char __user *dst, int len, int sum,
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int *err_ptr)
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{
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if(copy_to_user(dst, src, len)){
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*err_ptr = -EFAULT;
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return(-1);
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}
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return(arch_csum_partial(src, len, sum));
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}
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unsigned int csum_partial_copy_from(const unsigned char __user *src,
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unsigned char *dst, int len, int sum,
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int *err_ptr)
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{
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if(copy_from_user(dst, src, len)){
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*err_ptr = -EFAULT;
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return(-1);
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}
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return arch_csum_partial(dst, len, sum);
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}
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