BITMAP_PARSE_USER(9)              Basic Kernel Library Functions             BITMAP_PARSE_USER(9)



NAME
       bitmap_parse_user - convert an ASCII hex string in a user buffer into a bitmap

SYNOPSIS
       int bitmap_parse_user(const char __user * ubuf, unsigned int ulen, unsigned long * maskp,
                             int nmaskbits);

ARGUMENTS
       ubuf
           pointer to user buffer containing string.

       ulen
           buffer size in bytes. If string is smaller than this then it must be terminated with a
           \0.

       maskp
           pointer to bitmap array that will contain result.

       nmaskbits
           size of bitmap, in bits.

DESCRIPTION
       Wrapper for __bitmap_parse, providing it with user buffer.

       We cannot have this as an inline function in bitmap.h because it needs linux/uaccess.h to
       get the access_ok declaration and this causes cyclic dependencies.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                      BITMAP_PARSE_USER(9)