zfcp_fsf_sc..._fc_security(9)

📦 version 7.3.1, in nixpkgs unstable

💅 zfcp_fsf_scnprint_fc_security — for when your FC security flags need a little translation moment 💅

okay so bestie, welcome to the Kernel API Manual ✨ this one's all about turning those lowkey mysterious FC Endpoint Security flags into something a human can actually read, no cap 🫶

✨ SYNOPSIS ✨

ssize_t zfcp_fsf_scnprint_fc_security (char *buf , size_t size , u32
fc_security , enum zfcp_fsf_print_fmt fmt );

🎀 ARGUMENTS 🎀

  • buf — the buffer where the translated FC Endpoint Security flag(s) get placed, like a little cozy home for your mnemonics 🏠
  • size — the size of that buffer, and yes bestie it's including the trailing null space, don't forget the null, she matters 💀
  • fc_security — one or more FC Endpoint Security flags, or literally zero, we don't judge 🙈
  • fmt — specifies whether a list or a single item is to be put into the buffer, choose your fighter 💅

🌸 DESCRIPTION 🌸

So the Fibre Channel (FC) Endpoint Security flags get translated into mnemonics, iconic behavior honestly. And if those FC Endpoint Security flags are zero? Then "none" is placed into the buffer. Periodt. ✨

With ZFCP_FSF_PRINT_FMT_LIST the mnemonics are placed as a list separated by a comma followed by a space into the buffer. It's giving organized, it's giving readable 💖 But — and this is the important part — if one or more FC Endpoint Security flags cannot be translated into a mnemonic, because they're undefined in zfcp_fsf_fc_security_mnemonics, then their bitwise ORed value in hexadecimal representation is placed into the buffer instead. No cap, that's the fallback 😭

With ZFCP_FSF_PRINT_FMT_SINGLEITEM only one single mnemonic is placed into the buffer. Just one. Solo. Main character energy 👑 But if that FC Endpoint Security flag cannot be translated, as it is undefined in zfcp_fsf_fc_security_mnemonics, its value in hexadecimal representation is placed into the buffer. And if more than one FC Endpoint Security flag was specified? Their value in hexadecimal representation is placed into the buffer. The macro ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH can be used to define a buffer that is large enough to hold one mnemonic. Use it bestie, save yourself the heartbreak 🫶

🔥 RETURN 🔥

The number of characters written into buf not including the trailing

💀 bestie the manpage literally cuts off here — "not including the trailing" and then nothing. That's it. That's the sentence. We love an abrupt ending ngl 😭 (it's definitely talking about the trailing null space, iykyk)

🌈 SEE ALSO 🌈

Kernel file ./drivers/s390/scsi/zfcp_fsf.c — go read it, it's giving source material ✨

and that's the whole page bestie, you ate that 💅✨ this little beauty lives in ./drivers/s390/scsi and the server printed it all the way back in October 2026 🗓️ slay, go translate some flags, ily 🫶💖

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