bitmap_parse_user (9) - Linux Man Pages

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

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.

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