dbg_check_filesystem(9)

💖 NAME 💖

okay so this is dbg_check_filesystem(9) from the Kernel API Manual, and the assignment is literally in the name: check the file-system. bestie, that's the whole vibe. ✨

🌸 SYNOPSIS 🌸

int dbg_check_filesystem (struct ubifs_info *c );

🎀 ARGUMENTS 🎀

• c — UBIFS file-system description object. that's the one thing you pass in, and it's the whole UBIFS file-system description object, no cap.

🦋 DESCRIPTION 🦋

okay so here's what this icon actually checks, bestie. it checks the file system, namely:

• makes sure that all leaf nodes exist and their CRCs are correct
• makes sure inode nlink, size, xattr size/count are correct (for all inodes)

the function reads whole indexing tree and all nodes, so it is pretty heavy-weight — like, it's giving "I read everything" energy, fr fr. Returns zero if the file-system is consistent, -EINVAL if not, and a negative error code in case of failure. 💅

🌈 SEE ALSO 🌈

Kernel file ./fs/ubifs/debug.c, plus the whole friend group:

• ubifs_dump_index(9)
• dbg_save_space_info(9)
• dbg_check_space_info(9)
• dbg_check_synced_i_size(9)
• dbg_check_key_order(9)
• dbg_check_znode(9)
• dbg_check_tnc(9)
• dbg_walk_index(9)
• add_size(9)
• dbg_check_idx_size(9)
• struct fsck_inode(9)
• struct fsck_data(9)
• add_inode(9)
• search_inode(9)
• read_add_inode(9)
• check_leaf(9)
• free_inodes(9)
• check_inodes(9)
• dbg_check_data_nodes_order(9)
• dbg_check_nondata_nodes_order(9)
• provide_user_output(9)
• interpret_user_input(9)
• dbg_debugfs_init_fs(9)
• dbg_debugfs_exit_fs(9)
• dbg_debugfs_init(9)
• dbg_debugfs_exit(9)
• ubifs_debugging_init(9)
• ubifs_debugging_exit(9)

signed off from source/version ./fs/ubifs, dated October 2026, on the dbg_check_filesystem(9) page 💖🎀🫶