devcgroup_l...k_permission(9)

Okay bestie, welcome to the Kernel API Manual — the header title for this one is devcgroup_l...k_permission(9), and the full-name glow-up is waiting in NAME below. 💅✨

🌸 NAME 🌸

devcgroup_legacy_check_permission — checks if an inode operation is permitted. Periodt.

✨ SYNOPSIS ✨

int devcgroup_legacy_check_permission (short type , u32 major , u32 minor , short access );

🎀 ARGUMENTS 🎀

• type — device type.
• major — device major number.
• minor — device minor number.
• access — combination of DEVCG_ACC_WRITE, DEVCG_ACC_READ and DEVCG_ACC_MKNOD.

💖 DESCRIPTION 💖

It returns 0 on success, and -EPERM in the case that the operation is not permitted. That’s the whole vibe check: success = 0, not allowed = -EPERM. 😭✨

🦋 SEE ALSO 🦋

Kernel file: ./security/device_cgroup.c

• dev_exception_clean(9)
• devcgroup_online(9)
• match_exception(9)
• match_exception_partial(9)
• verify_new_ex(9)
• parent_allows_removal(9)
• may_allow_all(9)
• revalidate_active_exceptions(9)
• propagate_exception(9)

Cute little sign-off, bestie: this page’s source/version is ./security, and it’s dated October 2026. The footer also has devcgroup_l...k_permission(9) in the corner — mwah 💖🎀