proc_int_u2k_conv_uop(9)

💖 NAME 💖

okay so bestie, welcome to the proc_int_u2k_conv_uop(9) page — it’s part of the Kernel API Manual, and the vibe check is simple: assign user value to a kernel pointer ✨. no cap, that’s literally the whole name, and it ate 💅

✨ SYNOPSIS ✨

int proc_int_u2k_conv_uop (const ulong *u_ptr , int *k_ptr , const bool
       *negp , ulong (*u_ptr_op)(const ulong) );

the way this signature is just sitting there looking iconic 😭

🎀 ARGUMENTS 🎀

• u_ptr — pointer to user space variable. user-space pointer, got it 🫶
• k_ptr — pointer to kernel variable. kernel-space pointer, main character energy 👑
• negp — If TRUE, the converted user value is made negative. so TRUE means the converted user value goes negative, periodt 💅
• u_ptr_op — execute this function before assigning to k_ptr. this function runs before the assignment to k_ptr, iykyk 🌸

🦋 DESCRIPTION 🦋

okay so here’s the lowkey mechanics: uses WRITE_ONCE to assign value to k_ptr. Executes u_ptr_op if not NULL. Check for overflow with UINT_MAX. that UINT_MAX overflow check is in the mix, so don’t sleep on it 🔥

ngl, WRITE_ONCE is doing the assignment move here, and u_ptr_op runs if it’s not NULL — that’s the whole flow, fr fr 🫶

🌈 RETURN 🌈

0 on success. that’s it, bestie — 0 means success, and we love a clean return ✨

👑 SEE ALSO 👑

okay the SEE ALSO list is giving full group-chat roster, and every single one gets a shoutout 😭💖

• Kernel file ./kernel/sysctl.c
• enum sysctl_writes_mode(9)
• proc_first_pos_non_zero_ignore(9)
• proc_dostring(9)
• strtoul_lenient(9)
• proc_get_long(9)
• proc_put_long(9)
• proc_uint_u2k_conv_uop(9)
• proc_uint_k2u_conv(9)
• proc_uint_conv(9)
• proc_int_k2u_conv_kop(9)
• proc_int_conv(9)
• proc_douintvec_conv(9)
• proc_dobool(9)
• proc_dointvec(9)
• proc_douintvec(9)
• proc_dointvec_minmax(9)
• proc_douintvec_minmax(9)
• proc_dou8vec_minmax(9)
• proc_ulong_conv(9)
• proc_ulong_u2k_conv_uop(9)
• proc_ulong_k2u_conv_kop(9)
• proc_doulongvec_conv(9)
• proc_doulongvec_minmax(9)
• proc_dointvec_conv(9)
• proc_do_large_bitmap(9)

bye bestie! 🫶💖 this page’s source/version is ./kernel, dated October 2026 — catch u later, and remember: pointers are just vibes with addresses 😭✨