tomoyo_read_self(9)

🦋 tomoyo_read_self(9) — read() for the /sys/kernel/security/tomoyo/self_domain interface 💅

okay so bestie, this one is from the Kernel API Manual, and the manual name is literally right there: tomoyo_read_self(9). it's giving kernel securityfs main-character energy, no cap. ✨

✨ NAME ✨

tomoyo_read_self — read() for /sys/kernel/security/tomoyo/self_domain interface. 🌸

🌈 SYNOPSIS 🌈

ssize_t tomoyo_read_self (struct file *file , char __user *buf , size_t
count , loff_t *ppos );

🎀 ARGUMENTS 🎀

• file — Pointer to struct file. literally the file object, bestie. 🫶
• buf — Domainname which current thread belongs to. yes, that's the domainname the current thread belongs to — iconic. 💅
• count — Size of buf. like, how big the buffer is. ⭐
• ppos — Bytes read by now. tracking the read position vibes, fr fr. 🦋

💖 DESCRIPTION 💖

Returns read size on success, negative value otherwise. that's the whole plot, bestie — success gives you the read size, anything else gives you a negative value. 😭 no cap.

🧚 SEE ALSO 🧚

Kernel file ./security/tomoyo/securityfs_if.c — plus the whole friend group: tomoyo_check_task_acl(9), tomoyo_write_self(9), tomoyo_open(9), tomoyo_release(9), tomoyo_poll(9), tomoyo_read(9), tomoyo_write(9), tomoyo_create_entry(9), tomoyo_interface_init(9). 💜

xoxo from ./security/tomoyo, October 2026 💅✨