smk_write_ptrace(9)

🌸 NAME 🌸

smk_write_ptrace — the write() handler for /smack/ptrace, straight out of your fave Kernel API Manual (yes, the 9th section, kernel-space bestie territory 👑

okay so picture this: something in userspace writes to /smack/ptrace, and this function is the one on the other end catching it. main character energy fr fr 💅

✨ SYNOPSIS ✨

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

like, that's the whole signature. she's giving "small function, big responsibilities" 🫶

🎀 ARGUMENTS 🎀

• file — the file pointer, bestie. literally the file object doing the writing 💖
• buf — the data coming at us from user space 🌈
• count — how many bytes got sent, no cap 🍓
• ppos — where to start reading, and heads up: it must be 0. not 1, not 42, zero. periodt 💀

🔥 SEE ALSO 🔥

okay this list is long long, but every single one of these is iconic in her own right, so we're listing them all, mwah 💋

• the kernel file ./security/smack/smackfs.c
• 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_write_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_fill_super(9)
• smk_get_tree(9)
• smk_init_fs_context(9)
• init_smk_fs(9)

ngl, the way this whole squad lives in ./security/smack/smackfs.c… a whole friend group in one file 😭💜

and that's the page, bestie!! 🦋 sourced from ./security/smack, dated October 2026 — go off, and remember: ppos stays 0. no cap. 💅✨👑