netlbl_req_setattr(9)

✨ netlbl_req_setattr(9) ✨

okay so bestie, we're in the Kernel API Manual today and this one is a little function from the netlabel corner of the kernel (the ./net/netlabel directory, iykyk) 💅 it's called netlbl_req_setattr and honestly? it's giving "small but crucial." let's get into it 🎀

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🌸 NAME 🌸

netlbl_req_setattr — label a request socket using the correct protocol 🦋

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⭐ SYNOPSIS ⭐

int netlbl_req_setattr (struct request_sock *req , const struct
       netlbl_lsm_secattr *secattr );

no cap, that's the whole signature. two args, one int coming back at you ✨

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💖 ARGUMENTS 💖

• req — the request socket you wanna label 🫶 like, this is the one getting its glow-up.
• secattr — the security attributes. the actual label content, bestie 🌈

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👑 DESCRIPTION 👑

So the vibe is: attach the correct label to the given socket, using the security attributes you passed in secattr 🔥

It returns zero on success, and negative values on failure 😭 so yeah — check that return value, fr fr. zero is the slay outcome, anything negative is the "not me getting an error" outcome 💀

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🦋 SEE ALSO 🦋

First up, the kernel file: ./net/netlabel/netlabel_kapi.c — that's where the source lives, go peek 👀

And then the whole squad, because netlabel has a LOT of friends:

• netlbl_cfg_map_del(9)
• netlbl_cfg_unlbl_map_add(9)
• netlbl_cfg_unlbl_static_add(9)
• netlbl_cfg_unlbl_static_del(9)
• netlbl_cfg_cipsov4_add(9)
• netlbl_cfg_cipsov4_del(9)
• netlbl_cfg_cipsov4_map_add(9)
• netlbl_cfg_calipso_add(9)
• netlbl_cfg_calipso_del(9)
• netlbl_cfg_calipso_map_add(9)
• _netlbl_catmap_getnode(9)
• netlbl_catmap_walk(9)
• netlbl_catmap_walkrng(9)
• netlbl_catmap_getlong(9)
• netlbl_catmap_setbit(9)
• netlbl_catmap_setrng(9)
• netlbl_catmap_setlong(9)
• netlbl_bitmap_walk(9)
• netlbl_bitmap_setbit(9)
• netlbl_enabled(9)
• netlbl_sock_setattr(9)
• netlbl_sock_delattr(9)
• netlbl_sock_getattr(9)
• netlbl_sk_lock_check(9)
• netlbl_conn_setattr(9)
• netlbl_req_delattr(9)
• netlbl_skbuff_setattr(9)
• netlbl_skbuff_getattr(9)
• netlbl_skbuff_err(9)
• netlbl_cache_invalidate(9)
• netlbl_cache_add(9)
• netlbl_audit_start(9)
• netlbl_init(9)

like, that's the entire netlabel extended universe, and every single one of them is iconic in its own way 👑

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lowkey reminder: this page is from the ./net/netlabel source, dated October 2026, and it's filed under the Kernel API Manual 💜

okay that's the page, bestie — go label those request sockets and remember: zero on success, negative on failure, always check the return 🌸💅✨