ubifs_new_inode(9)

💅 ubifs_new_inode(9) 💅

okay so this is a page straight outta the Kernel API Manual (ubifs_new_inode(9), yes the whole vibe) and it's literally about birthing a brand-new UBIFS inode. icon behavior. let's get into it 🫶

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✨ NAME ✨

ubifs_new_inode — allocate new UBIFS inode object. that's it, that's the whole job, and she does it flawlessly 💖

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🌸 SYNOPSIS 🌸

struct inode * ubifs_new_inode (struct ubifs_info *c , struct inode *dir
, umode_t mode , bool is_xattr );

copy it exactly bestie, spacing and all, do not come for me about the comma placement 🙈

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🎀 ARGUMENTS 🎀

• c — the UBIFS file-system description object. like, the whole filesystem's little ID card 💳
• dir — the parent directory inode. every new inode needs a mother figure okay 😭
• mode — inode mode flags 🏷️
• is_xattr — whether the inode is an xattr inode. yes or no, bestie, pick one ✨

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🦋 DESCRIPTION 🦋

So what she does: this function finds an unused inode number, allocates a new inode, and initializes it. three steps, zero drama, main character energy 👑

but here's the part where you gotta pay attention 🔥 — a non-xattr new inode may be written with xattrs (selinux/encryption) before the dentry gets written. and that combination could cause an inconsistent problem if a powercut happens between those two operations. yes, a literal powercut, mid-operation, chaos 💀

to deal with that, the non-xattr new inode is initialized with zero-nlink and added into the orphan list. and listen, this is on the caller:

caller should make sure that inode is relinked later, and make sure that orphan removing and journal writing into an committing atomic operation. 🔒 no cap, both of those are requirements, not suggestions.

returns new inode in case of success and an error code in case of failure. slay, standard, we love a clear contract 💅

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🌈 SEE ALSO 🌈

Kernel file ./fs/ubifs/dir.c — and her entire friend group:

• inherit_flags(9)
• lock_2_inodes(9)
• unlock_2_inodes(9)
• vfs_dent_type(9)
• ubifs_check_dir_empty(9)
• lock_4_inodes(9)
• unlock_4_inodes(9)

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okay that's the page bestie, mwah 💜 and for the cute sign-off: this lil masterpiece lives in ./fs/ubifs, dated October 2026, and yes it's still ubifs_new_inode(9) — go forth and allocate responsibly 🧚⭐