validate_sb(9)

💅 NAME 💅

Okay bestie, welcome to the validate_sb(9) page from the Kernel API Manual ✨ — and it's literally all about validate_sb, aka validate superblock node. No cap, that's the whole vibe.

🌸 SYNOPSIS 🌸

Here's the signature, copied exactly because we do not mess with code, periodt:

int validate_sb (struct ubifs_info *c , struct ubifs_sb_node *sup );

🎀 ARGUMENTS 🎀

• c — UBIFS file-system description object. It's the main character holding the data, bestie.
• sup — superblock node. The node getting validated.

✨ DESCRIPTION ✨

So the function validates superblock node sup 💖. Since most of the data was read from the superblock and stored in c, the function validates fields in c instead. That's the plot twist: sup is the superblock node, but a lot of the actual field-checking happens on c.

It returns zero in case of success and -EINVAL in case of validation failure. Periodt. 🔥

🦋 SEE ALSO 🦋

• Kernel file: ./fs/ubifs/sb.c
• create_default_filesystem(9)
• ubifs_read_sb_node(9)
• ubifs_write_sb_node(9)
• ubifs_read_superblock(9)
• fixup_leb(9)
• fixup_free_space(9)
• ubifs_fixup_free_space(9)

That's the whole page, bestie 🫶. Source/version tag: ./fs/ubifs 🌈. Date: October 2026 💜. validate_sb(9) out! 🎀