1__COPY_TO_USER(9)         Memory Management in Linux         __COPY_TO_USER(9)
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NAME

6       __copy_to_user - Copy a block of data into user space, with less
7       checking.
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SYNOPSIS

10       unsigned long __copy_to_user(void __user * to, const void * from,
11                                    unsigned long n);
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ARGUMENTS

14       to
15           Destination address, in user space.
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17       from
18           Source address, in kernel space.
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20       n
21           Number of bytes to copy.
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CONTEXT

24       User context only. This function may sleep.
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DESCRIPTION

27       Copy data from kernel space to user space. Caller must check the
28       specified block with access_ok before calling this function.
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30       Returns number of bytes that could not be copied. On success, this will
31       be zero.
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34Kernel Hackers Manual 3.10         June 2019                 __COPY_TO_USER(9)
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