stm32_firewall_grant_access(9)

🎀 stm32_firewall_grant_access(9) 🎀

okay so bestie, welcome to the Kernel API Manual ✨ — today's main character is stm32_firewall_grant_access, and honestly? she's giving gatekeeper energy and we love her for it 💅

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🌸 NAME 🌸

stm32_firewall_grant_access — request firewall access rights and grant access. fr fr, that's literally the whole job 🫶

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✨ SYNOPSIS ✨

int stm32_firewall_grant_access (struct stm32_firewall *firewall );

like, that's the whole vibe. one function, one pointer, no drama 💖

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🦋 ARGUMENTS 🦋

• firewall — firewall reference containing the ID to check against its firewall controller 🧚 lowkey she needs to know which firewall you're talking about before she can gatekeep anything, iykyk

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🍓 DESCRIPTION 🍓

bestie, here's the tea ☕ — this one comes back with a verdict, and the verdict is a number:

• returns 0 if access is granted — slay, you're in 👑
• -EACCES if access is denied — not you getting carded at the velvet rope 💀
• -ENODEV if firewall is null — babe you gave her nothing, of course she's confused 🙈
• or the appropriate errno code if an error occurred — because sometimes things are just messy 😭

so like... always check the return value. always. no cap 🌈

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💜 SEE ALSO 💜

go read these next, they're all in the same friend group and they ate 🔥:

• kernel file ./include/linux/bus/stm32_firewall_device.h
• struct stm32_firewall(9)
• stm32_firewall_get_firewall(9)
• stm32_firewall_release_access(9)
• stm32_firewall_grant_access_by_id(9)
• stm32_firewall_release_access_by_id(9)
• stm32_firewall_get_grant_all_access(9)

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⭐ friendly reminder that this page lives in ./include/linux/bus and is dated October 2026. if you quote her, cite her properly bestie 💅

and that's the post 🫶 this has been stm32_firewall_grant_access(9) from the Kernel API Manual, brought to you by ./include/linux/bus, October 2026 — mwah, go grant some access ✨💖🎀