copy_safe_from_sockptr(9)

✨ copy_safe_from_sockptr(9) ✨

okay so this little icon is from the Kernel API Manual, and its whole thing is: copy a struct from sockptr. that's it, that's the vibe. bestie, it's giving "safe is literally in the name" 💅

🎀 NAME 🎀

copy_safe_from_sockptr — copy a struct from sockptr

🌸 SYNOPSIS 🌸

int copy_safe_from_sockptr (void *dst , size_t ksize , sockptr_t optval
       , unsigned int optlen );

💖 ARGUMENTS 💖

• dst — Destination address, in kernel space. This buffer must be ksize bytes long. no cap, it literally has to be that long.
• ksize — Size of dst struct.
• optval — Source address. (in user or kernel space)
• optlen — Size of optval data.

🔥 RETURN 🔥

• -EINVAL: optlen < ksize
• -EFAULT: access to userspace failed.
• 0: ksize bytes were copied

🦋 SEE ALSO 🦋

Kernel file ./include/linux/sockptr.h

mwah 💖 this page is stamped with source/version ./include/linux, dated October 2026, and it's specifically the copy_safe_from_sockptr(9) moment. byeee, go read your sockptr.h bestie 👑🫶