STRUCT OS_AREA_DB(9)

💖 NAME 💖

okay so this is struct os_area_db(9) from the Kernel API Manual, and it is literally the shared flash memory database. That's the whole assignment, bestie — shared flash memory database. Slay.

✨ SYNOPSIS ✨

Here's the struct in all its literal glory. Do not touch the field names, okay? Copy-paste energy only:

       struct os_area_db {
           u8 magic_num[4];
           u16 version;
           u16 _reserved_1;
           u16 index_64;
           u16 count_64;
           u16 index_32;
           u16 count_32;
           u16 index_16;
           u16 count_16;
           u32 _reserved_2;
           u8 _db_data[1000];
        };

🫶 Members 🫶

• magic_num — always '-db-'. That's the vibe check. No cap.
• version — the os_area_db format version number. Iconic little version tag.
• index_64 — byte offset of the database id index for 64 bit variables.
• count_64 — number of usable 64 bit index entries.
• index_32 — byte offset of the database id index for 32 bit variables.
• count_32 — number of usable 32 bit index entries.
• index_16 — byte offset of the database id index for 16 bit variables.
• count_16 — number of usable 16 bit index entries.

🌈 Description 🌈

This is flash rom storage for exclusive use by guests running in the other os lpar. The current system configuration allocates 1K (two segments) for other os use. Periodt — that's the storage situation, bestie.

👑 SEE ALSO 👑

Kernel file ./arch/powerpc/platforms/ps3/os-area.c struct — yes, that exact path, go look:

• os_area_header(9)
• struct os_area_params(9)
• enum os_area_db_owner(9)
• struct saved_params(9)
• os_area_set_property(9)
• os_area_get_property(9)
• db_for_each_64(9)
• update_flash_db(9)
• os_area_queue_work_handler(9)
• ps3_os_area_save_params(9)
• ps3_os_area_init(9)
• ps3_os_area_get_rtc_diff(9)
• ps3_os_area_set_rtc_diff(9)
• ps3_os_area_get_av_multi_out(9)

And that's the page, bestie 💅 — sourced from ./arch/powerpc/platforms/ps3, dated October 2026, all about struct os_area_db(9). Mwah 🫶✨