bitmap_parse_user(9)

✨ NAME ✨

okay so bestie, this is the bitmap_parse_user(9) page from the Kernel API Manual 💅 and it's all about turning an ASCII hex string in a user buffer into a bitmap. iconic behavior, honestly.

🎀 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. literally the spot where the string is hanging out.
• ulen — buffer size in bytes. If string is smaller than this then it must be terminated with a . (yes, that blank-looking bit is exactly what the page says — no cap 💀)
• maskp — pointer to bitmap array that will contain result. this is where the glow-up result goes.
• nmaskbits — size of bitmap, in bits.

💖 SEE ALSO 💖

• Kernel file ./lib/bitmap-str.c
• bitmap_print_to_buf(9)
• bitmap_print_bitmask_to_buf(9)
• bitmap_print_list_to_buf(9)
• bitmap_parselist(9)
• bitmap_parselist_user(9)
• bitmap_parse(9)

mwah 💋 source/version: ./lib, date: October 2026, page: bitmap_parse_user(9). periodt 🫶