smack_from_skb(9)

💅 smack_from_skb(9) — a Kernel API Manual moment 💅

okay so this is the Kernel API Manual entry for smack_from_skb, and it is short, cute, and very “read the secmark, bestie.” no cap.

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🌸 NAME 🌸

smack_from_skb — Smack data from the secmark in an skb.

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✨ SYNOPSIS ✨

struct smack_known * smack_from_skb (struct sk_buff *skb );

literally that’s the whole flex: return type struct smack_known *, function name smack_from_skb, argument struct sk_buff *skb.

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🦋 ARGUMENTS 🦋

• skb — packet. that’s it. the packet. the little network vibe delivery system.

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💖 DESCRIPTION 💖

Returns smack_known of the secmark or NULL if that won’t work.

that’s the whole tea, bestie: it returns the smack_known of the secmark, or NULL if that won’t work. no extra lore, no secret bonus flags. periodt.

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🎀 SEE ALSO 🎀

the kernel file is ./security/smack/smack_lsm.c, and these are the see-also besties — all of them, in order, no skipping:

• smk_fetch(9)
• init_inode_smack(9)
• init_task_smack(9)
• smk_copy_rules(9)
• smk_copy_relabel(9)
• smk_ptrace_mode(9)
• smk_ptrace_rule_check(9)
• smack_ptrace_access_check(9)
• smack_ptrace_traceme(9)
• smack_syslog(9)
• smack_sb_alloc_security(9)
• smack_fs_context_submount(9)
• smack_fs_context_dup(9)
• smack_fs_context_parse_param(9)
• smack_set_mnt_opts(9)
• smack_sb_statfs(9)
• smack_bprm_creds_for_exec(9)
• smack_inode_alloc_security(9)
• smk_rule_transmutes(9)
• smack_inode_init_security(9)
• smack_inode_link(9)
• smack_inode_unlink(9)
• smack_inode_rmdir(9)
• smack_inode_rename(9)
• smack_inode_permission(9)
• smack_inode_setattr(9)
• smack_inode_getattr(9)
• smack_inode_xattr_skipcap(9)
• smack_inode_setxattr(9)
• smack_inode_post_setxattr(9)
• smack_inode_getxattr(9)
• smack_inode_removexattr(9)
• smack_inode_set_acl(9)
• smack_inode_get_acl(9)
• smack_inode_remove_acl(9)
• smack_inode_getsecurity(9)
• smack_inode_listsecurity(9)
• smack_inode_getlsmprop(9)
• smack_file_alloc_security(9)
• smack_file_ioctl(9)
• smack_file_lock(9)
• smack_file_fcntl(9)
• smack_mmap_file(9)
• smack_file_set_fowner(9)
• smack_file_send_sigiotask(9)
• smack_file_receive(9)
• smack_file_open(9)
• smack_cred_alloc_blank(9)
• smack_cred_free(9)
• smack_cred_prepare(9)
• smack_cred_transfer(9)
• smack_cred_getsecid(9)
• smack_cred_getlsmprop(9)
• smack_kernel_act_as(9)
• smack_kernel_create_files_as(9)
• smk_curacc_on_task(9)
• smack_task_setpgid(9)
• smack_task_getpgid(9)
• smack_task_getsid(9)
• smack_current_getlsmprop_subj(9)
• smack_task_getlsmprop_obj(9)
• smack_task_setnice(9)
• smack_task_setioprio(9)
• smack_task_getioprio(9)
• smack_task_setscheduler(9)
• smack_task_getscheduler(9)
• smack_task_movememory(9)
• smack_task_kill(9)
• smack_task_to_inode(9)
• smack_sk_alloc_security(9)
• smack_sk_free_security(9)
• smack_sk_clone_security(9)
• smack_ipv4host_label(9)
• smack_ipv6host_label(9)
• smack_netlbl_add(9)
• smack_netlbl_delete(9)
• smk_ipv4_check(9)
• smk_ipv6_check(9)
• smk_ipv6_port_label(9)
• smk_ipv6_port_check(9)
• smack_inode_setsecurity(9)
• smack_socket_post_create(9)
• smack_socket_socketpair(9)
• smack_socket_bind(9)
• smack_socket_connect(9)
• smack_flags_to_may(9)
• smack_msg_msg_alloc_security(9)
• smack_of_ipc(9)
• smack_ipc_alloc_security(9)
• smk_curacc_shm(9)
• smack_shm_associate(9)
• smack_shm_shmctl(9)
• smack_shm_shmat(9)
• smk_curacc_sem(9)
• smack_sem_associate(9)
• smack_sem_semctl(9)
• smack_sem_semop(9)
• smk_tskacc_msq(9)
• smk_curacc_msq(9)
• smack_msg_queue_associate(9)
• smack_msg_queue_msgctl(9)
• smack_msg_queue_msgsnd(9)
• smack_msg_queue_msgrcv(9)
• smack_ipc_permission(9)
• smack_ipc_getlsmprop(9)
• smack_d_instantiate(9)
• smack_getselfattr(9)
• smack_getprocattr(9)
• do_setattr(9)
• smack_setselfattr(9)
• smack_setprocattr(9)
• smack_unix_stream_connect(9)
• smack_unix_may_send(9)
• smack_socket_sendmsg(9)
• smack_from_secattr(9)
• smack_from_netlbl(9)
• smack_socket_sock_rcv_skb(9)
• smack_socket_getpeersec_stream(9)
• smack_socket_getpeersec_dgram(9)
• smack_inet_conn_request(9)
• smack_inet_csk_clone(9)
• smack_key_alloc(9)
• smack_key_permission(9)
• smack_watch_key(9)
• smack_post_notification(9)
• smack_audit_rule_init(9)
• smack_audit_rule_known(9)
• smack_audit_rule_match(9)
• smack_ismaclabel(9)
• smack_to_secctx(9)
• smack_secid_to_secctx(9)
• smack_lsmprop_to_secctx(9)
• smack_secctx_to_secid(9)
• smack_uring_override_creds(9)
• smack_uring_sqpoll(9)
• smack_uring_cmd(9)
• smack_init(9)

mwah 💋 that’s the page, bestie — it came from ./security/smack, dated October 2026, and it’s smack_from_skb(9). periodt. 🫶