nfserrno(9)

🌸 NAME 🌸

Okay bestie, welcome to nfserrno(9) from the Kernel API Manual — the little mapping function that takes Linux errnos and turns them into NFS errnos. Slay.

✨ SYNOPSIS ✨

__be32 nfserrno (int errno );

🎀 ARGUMENTS 🎀

• errno — the POSIX(-ish) error code that needs mapping. That's the whole vibe.

🦋 DESCRIPTION 🦋

It returns the appropriate (net-endian) nfserr_* — or nfs_ok if errno is 0. No cap, that's the mapping.

If it's an error we don't expect, it logs it once and returns nfserr_io. So: unexpected error, one log, then nfserr_io. Periodt.

💅 SEE ALSO 💅

The whole squad lives in the Kernel file ./fs/nfsd/vfs.c, and honestly? Iconic lineup:

• nfsd_lookup(9)
• nfsd_setattr(9)
• nfsd4_is_junction(9)
• nfsd_open_verified(9)
• nfsd_splice_read(9)
• nfsd_iter_read(9)
• nfsd_vfs_write(9)
• nfsd_read_splice_ok(9)
• nfsd_read(9)
• nfsd_write(9)
• nfsd_commit(9)
• nfsd_create_setattr(9)
• nfsd_symlink(9)
• nfsd_link(9)
• nfsd_rename(9)
• nfsd_unlink(9)
• nfsd_readdir(9)
• nfsd_filp_close(9)
• nfsd_removexattr(9)
• nfsd_get_case_info(9)

byeee 🫶 this page came from ./fs/nfsd, dated October 2026, and it's literally nfserrno(9) 💖✨