nilfs_cpfile_read(9)

🌸 nilfs_cpfile_read(9) 🌸

okay so bestie, welcome to the Kernel API Manual 💖 this one's a lil NILFS2 function and it's literally just here to read (or fetch) the cpfile inode for you. tiny function, big main-character energy, let's go 🫶

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✨ SYNOPSIS ✨

int nilfs_cpfile_read (struct super_block *sb , size_t cpsize , struct
       nilfs_inode *raw_inode , struct inode **inodep );

like yes, that's the whole signature, no cap 🎀

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🦋 ARGUMENTS 🦋

• sb — the super block instance, aka the context we're working inside 💅
• cpsize — the size of a checkpoint entry, so it knows how big the thing is 📏
• raw_inode — the on-disk cpfile inode, the raw version before it gets all cleaned up ✨
• inodep — the buffer where the inode gets stored, hand us a spot and we'll fill it 🧺

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⭐ RETURN ⭐

0 on success, or a negative error code on failure 😭 so like, check it, fr fr.

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👑 SEE ALSO 👑

Kernel file ./fs/nilfs2/cpfile.c — go read the source, iykyk 🍓

• nilfs_cpfile_checkpoint_offset(9)
• nilfs_cpfile_cp_snapshot_list_offset(9)
• nilfs_cpfile_ch_snapshot_list_offset(9)
• nilfs_cpfile_find_checkpoint_block(9)
• nilfs_cpfile_read_checkpoint(9)
• nilfs_cpfile_create_checkpoint(9)
• nilfs_cpfile_finalize_checkpoint(9)
• nilfs_cpfile_delete_checkpoints(9)
• nilfs_cpfile_get_cpinfo(9)
• nilfs_cpfile_delete_checkpoint(9)
• nilfs_cpfile_is_snapshot(9)
• nilfs_cpfile_change_cpmode(9)
• nilfs_cpfile_get_stat(9)

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ngl the whole cpfile family is iconic, this is just the one that opens the door 💀

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that's the tea bestie 🧚💜 this page lives in ./fs/nilfs2, dated October 2026, and it's filed under nilfs_cpfile_read(9) — periodt. 🌈