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| 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 bitmapSYNOPSIS¶
int bitmap_parse_user(const char __user * ubuf, unsigned int ulen, unsigned long * maskp, int nmaskbits);
ARGUMENTS¶
ubufpointer 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¶
| April 2019 | Kernel Hackers Manual 4.9. |