tomoyo_mount_acl(9)

💅 tomoyo_mount_acl(9)

okay so bestie, welcome to the tomoyo_mount_acl page — this one lives in the Kernel API Manual and honestly? it's giving "small function, big responsibility" energy. it does exactly one thing and it does it with main character confidence: Check permission for mount() operation. periodt. 🔥

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✨ SYNOPSIS ✨

int tomoyo_mount_acl (struct tomoyo_request_info *r , const char
*dev_name , const struct path *dir , const char *type , unsigned long
flags );

literally the whole signature, no cap — copy it exactly if you're typing it out 💖

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🎀 ARGUMENTS 🎀

• r — Pointer to "struct tomoyo_request_info". this is the request-info vibe holder, she's the one carrying the context 🫶
• dev_name — Name of device file. Maybe NULL. yes bestie, NULL is allowed, don't panic 🌸
• dir — Pointer to "struct path".
• type — Name of filesystem type.
• flags — Mount options.

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🦋 DESCRIPTION 🦋

Returns 0 on success, negative value otherwise. that's it, that's the deal — zero means slay ✅, anything negative means nope 😭

Caller holds tomoyo_read_lock. important detail, don't skip it — whoever's calling this is already holding that lock, iykyk. 🔒

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🌈 SEE ALSO 🌈

• Kernel file ./security/tomoyo/mount.c
• tomoyo_audit_mount_log(9)
• tomoyo_check_mount_acl(9)
• tomoyo_mount_permission(9)

go read those too, they're all in the same friend group fr fr 👑

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and that's the whole page, bestie 🎀 this iconic little entry comes from ./security/tomoyo and it's dated October 2026 — so yeah, mark your calendar, the mount ACL lore is timeless 💜✨