suse man page for __bitmap_parse

__BITMAP_PARSE(9)					  Basic Kernel Library Functions					 __BITMAP_PARSE(9)

NAME
       __bitmap_parse - convert an ASCII hex string into a bitmap.

SYNOPSIS
       int __bitmap_parse(const char * buf, unsigned int buflen, int is_user, unsigned long * maskp, int nmaskbits);

ARGUMENTS
       buf
	   pointer to buffer containing string.

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

       is_user
	   location of buffer, 0 indicates kernel space

       maskp
	   pointer to bitmap array that will contain result.

       nmaskbits
	   size of bitmap, in bits.

DESCRIPTION
       Commas group hex digits into chunks. Each chunk defines exactly 32 bits of the resultant bitmask. No chunk may specify a value larger than
       32 bits (-EOVERFLOW), and if a chunk specifies a smaller value then leading 0-bits are prepended.  -EINVAL is returned for illegal
       characters and for grouping errors such as "1,,5", ",44", "," and "". Leading and trailing whitespace accepted, but not embedded
       whitespace.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010							 __BITMAP_PARSE(9)