netlbl_catmap_walkrng(9)

💅 netlbl_catmap_walkrng(9) — like, the Kernel API Manual, bestie 🎀

okay so you found yourself in the Kernel API Manual and the function in question is literally netlbl_catmap_walkrng(9) ✨ stay with me, it's easier than it sounds, fr fr.

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🌸 NAME 🌸

netlbl_catmap_walkrng — bestie, this function finds the end of a string of set bits. that's it. that's the whole job. iconic behavior honestly 👑

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🦋 SYNOPSIS 🦋

int netlbl_catmap_walkrng (struct netlbl_lsm_catmap *catmap , u32 offset
);

like yes, it returns an int, and yes, the line break is exactly where it is, don't come for me 💀

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💖 ARGUMENTS 💖

• catmap — the category bitmap. this is the main character of the whole operation 🫶
• offset — where you start searching, and it's measured in bits, not bytes. very important, don't get it twisted 🙈

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✨ DESCRIPTION ✨

so the vibe is: this function walks an LSM secattr category bitmap, starting at offset, and hands you back the spot of the first cleared bit 🎯

and if offset is past the end of the bitmap? it does not just shrug — it returns -ENOENT 😭 so yeah, that's your "bestie there's literally nothing out here" signal.

ngl this is a very short description but every word is doing cardio, ok? no filler, no fluff, just walk the bitmap and find that cleared bit 💅

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🔥 SEE ALSO 🔥

Kernel file ./net/netlabel/netlabel_kapi.c — go read it, iykyk 🧚

and the whole extended friend group:

• 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_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_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)

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and that's the whole page bestie!! 🫶💜

cute little sign-off: this page lives over in ./net/netlabel, it's dated October 2026, and yeah it's still called netlbl_catmap_walkrng(9) — slay, consistency, periodt 🌈⭐