proc_dointvec_minmax(9)

hey bestie, welcome to proc_dointvec_minmax(9) from the Kernel API Manual ✨ this page is literally about reading a vector of integers with min/max values, and she is iconic — no cap 💅

🌸 NAME 🌸

proc_dointvec_minmax — read a vector of integers with min/max values 💖

✨ SYNOPSIS ✨

int proc_dointvec_minmax (const struct ctl_table *table , int dir , void *buffer , size_t *lenp , loff_t *ppos );

🎀 ARGUMENTS 🎀

• table — the sysctl table, your main character struct 🫶
• dir — TRUE if this is a write to the sysctl file, iykyk ✅
• buffer — the user buffer, where the data hangs out 💅
• lenp — the size of the user buffer, keep an eye on her 👀
• ppos — file position, the little bookmark 📌

💖 DESCRIPTION 💖

Okay so this routine reads/writes up to table->maxlen/sizeof(unsigned int) integer values from/to the user buffer, and the buffer is treated as an ASCII string. The way that formula is just sitting there being all slash-y? Obsessed, periodt.

She also does a vibe check on the values: this routine will ensure the values are within the range specified by table->extra1 (min) and table->extra2 (max). Min is table->extra1, max is table->extra2, fr fr.

🔥 RETURN 🔥

• 0 on success 🎉
• -EINVAL when the range check fails and SYSCTL_USER_TO_KERN(dir) == true 💀

🦋 SEE ALSO 🦋

Peep the kernel file ./kernel/sysctl.c and enum sysctl_writes_mode(9), then the rest of the crew:

• 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_u2k_conv_uop(9)
• proc_int_conv(9)
• proc_douintvec_conv(9)
• proc_dobool(9)
• proc_dointvec(9)
• proc_douintvec(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)

xoxo, this page came from the ./kernel source/version, dated October 2026, and it’s the proc_dointvec_minmax(9) manual page — slay 💅✨