smk_write_cipso(9)

💖 NAME 💖

smk_write_cipso — write() for /smack/cipso. This is literally the Kernel API Manual page for smk_write_cipso(9), and yes bestie, we're getting into the kernel side of things 🫶.

✨ SYNOPSIS ✨

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

🎀 ARGUMENTS 🎀

• file — file pointer. Not actually used, no cap. It's giving "invited to the function but not on the group chat" 💀.
• buf — where to get the data from.
• count — bytes sent.
• ppos — where to start.

💅 DESCRIPTION 💅

Okay so the tea: this function accepts only one cipso rule per write call. One rule, that's the whole vibe. It returns the number of bytes written or an error code, as appropriate — iconic behavior, honestly ✨.

👑 SEE ALSO 👑

Kernel file ./security/smack/smackfs.c, plus the whole friend group: smk_netlabel_audit_set(9), smk_set_access(9), smk_perm_from_str(9), smk_fill_rule(9), smk_parse_rule(9), smk_parse_long_rule(9), smk_write_rules_list(9), smk_open_load(9), smk_write_load(9), smk_cipso_doi(9), smk_unlbl_ambient(9), smk_open_cipso(9), smk_set_cipso(9), smk_open_cipso2(9), smk_write_cipso2(9), smk_open_net4addr(9), smk_net4addr_insert(9), smk_write_net4addr(9), smk_open_net6addr(9), smk_net6addr_insert(9), smk_write_net6addr(9), smk_read_doi(9), smk_write_doi(9), smk_read_cipso_auto_level(9), smk_write_cipso_auto_level(9), smk_read_ambient(9), smk_write_ambient(9), smk_list_swap_rcu(9), smk_parse_label_list(9), smk_destroy_label_list(9), smk_write_onlycap(9), smk_read_unconfined(9), smk_write_unconfined(9), smk_read_logging(9), smk_write_logging(9), smk_open_load_self(9), smk_write_load_self(9), smk_user_access(9), smk_write_access(9), smk_open_load2(9), smk_write_load2(9), smk_open_load_self2(9), smk_write_load_self2(9), smk_write_access2(9), smk_write_revoke_subj(9), smk_init_sysfs(9), smk_write_change_rule(9), smk_read_syslog(9), smk_write_syslog(9), smk_open_relabel_self(9), smk_write_relabel_self(9), smk_read_ptrace(9), smk_write_ptrace(9), smk_fill_super(9), smk_get_tree(9), smk_init_fs_context(9), init_smk_fs(9).

byeee 💜 — source ./security/smack, October 2026, smk_write_cipso(9) signing off 🌈.