tccb_init(9)

🌸 NAME 🌸

okay so this is tccb_init(9) from the Kernel API Manual, and the name section is literally: tccb_init — initialize tccb. iconic. 💖

✨ SYNOPSIS ✨

void tccb_init (struct tccb *tccb , size_t size , u32 sac );

Yeah bestie, the return type is void — no return value to catch here. 🫶

🎀 ARGUMENTS 🎀

• tccb — the tccb address 💅
• size — the maximum size of the tccb 📏
• sac — the service-action-code to be user (that's the page's exact wording, bestie 👀)

💅 DESCRIPTION 💅

Initialize the header of the specified tccb by resetting all values to zero and filling in defaults for format, sac and initial tcal fields. So yes: zero everything out, then drop in the defaults for those fields. no cap. 🫶

🦋 SEE ALSO 🦋

Kernel file ./drivers/s390/cio/fcx.c 👑

• tcw_get_intrg(9)
• tcw_get_data(9)
• tcw_get_tccb(9)
• tcw_get_tsb(9)
• tcw_init(9)
• tcw_finalize(9)
• tcw_set_intrg(9)
• tcw_set_data(9)
• tcw_set_tccb(9)
• tcw_set_tsb(9)
• tsb_init(9)
• tccb_add_dcw(9)
• tcw_add_tidaw(9)

source/version: ./drivers/s390/cio · date: October 2026 · page: tccb_init(9) — bye bestie, mwah 💋💖🎀✨