bitmap_parse_user (9) Linux Manual Page
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.