tomoyo_read_control(9)

💅 tomoyo_read_control(9) 💅

okay bestie, buckle up, because this lil page lives in the Kernel API Manual and it's honestly so niche and so specific and we love that for it 🫶

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✨ NAME ✨

tomoyo_read_control — it's the read() of the /sys/kernel/security/tomoyo/ interface, no cap. that's the whole job description 💖

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🦋 SYNOPSIS 🦋

ssize_t tomoyo_read_control (struct tomoyo_io_buffer *head , char __user
*buffer , const int buffer_len );

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🎀 ARGUMENTS 🎀

• head — a pointer to struct tomoyo_io_buffer. yes it's called head. yes that's a lot of pressure for one pointer 💀
• buffer — a pointer to the buffer you're writing to. icon behavior, honestly.
• buffer_len — the size of that buffer. know your limits, queen 👑

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🌸 DESCRIPTION 🌸

so the actual tea: it returns bytes read on success, and a negative value otherwise 😭 that's it. that's the function. short and mysterious and honestly kind of main character energy.

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🌈 SEE ALSO 🌈

the whole friend group is here, and they all showed up for this one — shoutout to Kernel file ./security/tomoyo/common.c for hosting the party 🎉

• tomoyo_addprintf(9)
• tomoyo_flush(9)
• tomoyo_set_string(9)
• tomoyo_io_printf(9)
• tomoyo_set_space(9)
• tomoyo_set_lf(9)
• tomoyo_set_slash(9)
• tomoyo_init_policy_namespace(9)
• tomoyo_print_namespace(9)
• tomoyo_print_name_union(9)
• tomoyo_print_name_union_quoted(9)
• tomoyo_print_number_union_nospace(9)
• tomoyo_print_number_union(9)
• tomoyo_assign_profile(9)
• tomoyo_profile(9)
• tomoyo_find_yesno(9)
• tomoyo_set_uint(9)
• tomoyo_set_mode(9)
• tomoyo_write_profile(9)
• tomoyo_print_config(9)
• tomoyo_read_profile(9)
• tomoyo_same_manager(9)
• tomoyo_update_manager_entry(9)
• tomoyo_write_manager(9)
• tomoyo_read_manager(9)
• tomoyo_manager(9)
• tomoyo_select_domain(9)
• tomoyo_same_task_acl(9)
• tomoyo_write_task(9)
• tomoyo_delete_domain(9)
• tomoyo_write_domain2(9)
• tomoyo_write_domain(9)
• tomoyo_print_condition(9)
• tomoyo_set_group(9)
• tomoyo_print_entry(9)
• tomoyo_read_domain2(9)
• tomoyo_read_domain(9)
• tomoyo_write_pid(9)
• tomoyo_read_pid(9)
• tomoyo_write_exception(9)
• tomoyo_read_group(9)
• tomoyo_read_policy(9)
• tomoyo_read_exception(9)
• tomoyo_truncate(9)
• tomoyo_numscan(9)
• tomoyo_patternize_path(9)
• tomoyo_add_entry(9)
• tomoyo_supervisor(9)
• tomoyo_find_domain_by_qid(9)
• tomoyo_poll_query(9)
• tomoyo_read_query(9)
• tomoyo_write_answer(9)
• tomoyo_read_version(9)
• tomoyo_update_stat(9)
• tomoyo_read_stat(9)
• tomoyo_write_stat(9)
• tomoyo_open_control(9)
• tomoyo_poll_control(9)
• tomoyo_set_namespace_cursor(9)
• tomoyo_has_more_namespace(9)
• tomoyo_parse_policy(9)
• tomoyo_write_control(9)
• tomoyo_close_control(9)
• tomoyo_check_profile(9)
• tomoyo_load_builtin_policy(9)

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ngl, if you read all sixty-five of those you are a stronger person than me 😭 but like... respectfully. obsessed with the dedication 💜

okay that's the whole page!! and before you go — this masterpiece shipped straight out of ./security/tomoyo and it's dated October 2026, so go forth and read() responsibly, bestie 🌟💖✨