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

15       to
16           Destination address, in user space.
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18       from
19           Source address, in kernel space.
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21       n
22           Number of bytes to copy.
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CONTEXT

25       User context only. This function may sleep.
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DESCRIPTION

28       Copy data from kernel space to user space. Caller must check the
29       specified block with access_ok before calling this function.
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31       Returns number of bytes that could not be copied. On success, this will
32       be zero.
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35Kernel Hackers Manual 2.6.         June 2019                 __COPY_TO_USER(9)
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