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__CLEAR_USER(9) | Memory Management in Linux | __CLEAR_USER(9) |
NAME¶
__clear_user - Zero a block of memory in user space, with less checking.SYNOPSIS¶
unsigned long
__clear_user(void __user * to,
unsigned long n);
ARGUMENTS¶
toDestination address, in user space.
n
Number of bytes to zero.
DESCRIPTION¶
Zero a block of memory in user space. Caller must check the specified block with access_ok before calling this function. Returns number of bytes that could not be cleared. On success, this will be zero.COPYRIGHT¶
May 2018 | Kernel Hackers Manual 4.9. |