| Quellcodebibliothek Statistik Leitseite products/sources/formale Sprachen/C/Linux/kernel/ (Open Source Betriebssystem Version 6.17.9©) Datei vom 24.10.2025 mit Größe 10 kB |
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Quelle audit.h Sprache: C |
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* audit -- definition of audit_context structure and supporting types * * Copyright 2003-2004 Red Hat, Inc. * Copyright 2005 Hewlett-Packard Development Company, L.P. * Copyright 2005 IBM Corporation */ #ifndef _KERNEL_AUDIT_H_ #define _KERNEL_AUDIT_H_ #include <linux/fs.h> #include <linux/audit.h> #include <linux/security.h> #include <linux/skbuff.h> #include <uapi/linux/mqueue.h> #include <linux/tty.h> #include <uapi/linux/openat2.h> // struct open_how /* AUDIT_NAMES is the number of slots we reserve in the audit_context * for saving names from getname(). If we get more names we will allocate * a name dynamically and also add those to the list anchored by names_list. */ #define AUDIT_NAMES 5 /* At task start time, the audit_state is set in the audit_context using a per-task filter. At syscall entry, the audit_state is augmented by the syscall filter. */ enum audit_state { AUDIT_STATE_DISABLED, /* Do not create per-task audit_context. * No syscall-specific audit records can * be generated. */ AUDIT_STATE_BUILD, /* Create the per-task audit_context, * and fill it in at syscall * entry time. This makes a full * syscall record available if some * other part of the kernel decides it * should be recorded. */ AUDIT_STATE_RECORD /* Create the per-task audit_context, * always fill it in at syscall entry * time, and always write out the audit * record at syscall exit time. */ }; /* Rule lists */ struct audit_watch; struct audit_fsnotify_mark; struct audit_tree; struct audit_chunk; struct audit_entry { struct list_head list; struct rcu_head rcu; struct audit_krule rule; }; struct audit_cap_data { kernel_cap_t permitted; kernel_cap_t inheritable; union { unsigned int fE; /* effective bit of file cap */ kernel_cap_t effective; /* effective set of process */ }; kernel_cap_t ambient; kuid_t rootid; }; /* When fs/namei.c:getname() is called, we store the pointer in name and bump * the refcnt in the associated filename struct. * * Further, in fs/namei.c:path_lookup() we store the inode and device. */ struct audit_names { struct list_head list; /* audit_context->names_list */ struct filename *name; int name_len; /* number of chars to log */ bool hidden; /* don't log this record */ unsigned long ino; dev_t dev; umode_t mode; kuid_t uid; kgid_t gid; dev_t rdev; struct lsm_prop oprop; struct audit_cap_data fcap; unsigned int fcap_ver; unsigned char type; /* record type */ /* * This was an allocated audit_names and not from the array of * names allocated in the task audit context. Thus this name * should be freed on syscall exit. */ bool should_free; }; struct audit_proctitle { int len; /* length of the cmdline field. */ char *value; /* the cmdline field */ }; /* The per-task audit context. */ struct audit_context { int dummy; /* must be the first element */ enum { AUDIT_CTX_UNUSED, /* audit_context is currently unused */ AUDIT_CTX_SYSCALL, /* in use by syscall */ AUDIT_CTX_URING, /* in use by io_uring */ } context; enum audit_state state, current_state; unsigned int serial; /* serial number for record */ int major; /* syscall number */ int uring_op; /* uring operation */ struct timespec64 ctime; /* time of syscall entry */ unsigned long argv[4]; /* syscall arguments */ long return_code;/* syscall return code */ u64 prio; int return_valid; /* return code is valid */ /* * The names_list is the list of all audit_names collected during this * syscall. The first AUDIT_NAMES entries in the names_list will * actually be from the preallocated_names array for performance * reasons. Except during allocation they should never be referenced * through the preallocated_names array and should only be found/used * by running the names_list. */ struct audit_names preallocated_names[AUDIT_NAMES]; int name_count; /* total records in names_list */ struct list_head names_list; /* struct audit_names->list anchor */ char *filterkey; /* key for rule that triggered record */ struct path pwd; struct audit_aux_data *aux; struct audit_aux_data *aux_pids; struct sockaddr_storage *sockaddr; size_t sockaddr_len; /* Save things to print about task_struct */ pid_t ppid; kuid_t uid, euid, suid, fsuid; kgid_t gid, egid, sgid, fsgid; unsigned long personality; int arch; pid_t target_pid; kuid_t target_auid; kuid_t target_uid; unsigned int target_sessionid; struct lsm_prop target_ref; char target_comm[TASK_COMM_LEN]; struct audit_tree_refs *trees, *first_trees; struct list_head killed_trees; int tree_count; int type; union { struct { int nargs; long args[6]; } socketcall; struct { kuid_t uid; kgid_t gid; umode_t mode; struct lsm_prop oprop; int has_perm; uid_t perm_uid; gid_t perm_gid; umode_t perm_mode; unsigned long qbytes; } ipc; struct { mqd_t mqdes; struct mq_attr mqstat; } mq_getsetattr; struct { mqd_t mqdes; int sigev_signo; } mq_notify; struct { mqd_t mqdes; size_t msg_len; unsigned int msg_prio; struct timespec64 abs_timeout; } mq_sendrecv; struct { int oflag; umode_t mode; struct mq_attr attr; } mq_open; struct { pid_t pid; struct audit_cap_data cap; } capset; struct { int fd; int flags; } mmap; struct open_how openat2; struct { int argc; } execve; struct { const char *name; } module; struct { struct audit_ntp_data ntp_data; struct timespec64 tk_injoffset; } time; }; int fds[2]; struct audit_proctitle proctitle; }; extern bool audit_ever_enabled; extern void audit_log_session_info(struct audit_buffer *ab); extern int auditd_test_task(struct task_struct *task); #define AUDIT_INODE_BUCKETS 32 extern struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS]; static inline int audit_hash_ino(u32 ino) { return (ino & (AUDIT_INODE_BUCKETS-1)); } /* Indicates that audit should log the full pathname. */ #define AUDIT_NAME_FULL -1 extern int audit_match_class(int class, unsigned syscall); extern int audit_comparator(const u32 left, const u32 op, const u32 right); extern int audit_uid_comparator(kuid_t left, u32 op, kuid_t right); extern int audit_gid_comparator(kgid_t left, u32 op, kgid_t right); extern int parent_len(const char *path); extern int audit_compare_dname_path(const struct qstr *dname, const char *path, int plen); extern struct sk_buff *audit_make_reply(int seq, int type, int done, int multi, const void *payload, int size); extern void audit_panic(const char *message); struct audit_netlink_list { __u32 portid; struct net *net; struct sk_buff_head q; }; int audit_send_list_thread(void *_dest); extern struct mutex audit_filter_mutex; extern int audit_del_rule(struct audit_entry *entry); extern void audit_free_rule_rcu(struct rcu_head *head); extern struct list_head audit_filter_list[]; extern struct audit_entry *audit_dupe_rule(struct audit_krule *old); extern void audit_log_d_path_exe(struct audit_buffer *ab, struct mm_struct *mm); extern struct tty_struct *audit_get_tty(void); extern void audit_put_tty(struct tty_struct *tty); /* audit watch/mark/tree functions */ extern unsigned int audit_serial(void); #ifdef CONFIG_AUDITSYSCALL extern int auditsc_get_stamp(struct audit_context *ctx, struct timespec64 *t, unsigned int *serial); extern void audit_put_watch(struct audit_watch *watch); extern void audit_get_watch(struct audit_watch *watch); extern int audit_to_watch(struct audit_krule *krule, char *path, int len, u32 op); extern int audit_add_watch(struct audit_krule *krule, struct list_head **list); extern void audit_remove_watch_rule(struct audit_krule *krule); extern char *audit_watch_path(struct audit_watch *watch); extern int audit_watch_compare(struct audit_watch *watch, unsigned long ino, dev_t dev); extern struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule, char *pathname, int len); extern char *audit_mark_path(struct audit_fsnotify_mark *mark); extern void audit_remove_mark(struct audit_fsnotify_mark *audit_mark); extern void audit_remove_mark_rule(struct audit_krule *krule); extern int audit_mark_compare(struct audit_fsnotify_mark *mark, unsigned long ino, dev_t dev); extern int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old); extern int audit_exe_compare(struct task_struct *tsk, struct audit_fsnotify_mark *mark); extern struct audit_chunk *audit_tree_lookup(const struct inode *inode); extern void audit_put_chunk(struct audit_chunk *chunk); extern bool audit_tree_match(struct audit_chunk *chunk, struct audit_tree *tree); extern int audit_make_tree(struct audit_krule *rule, char *pathname, u32 op); extern int audit_add_tree_rule(struct audit_krule *rule); extern int audit_remove_tree_rule(struct audit_krule *rule); extern void audit_trim_trees(void); extern int audit_tag_tree(char *old, char *new); extern const char *audit_tree_path(struct audit_tree *tree); extern void audit_put_tree(struct audit_tree *tree); extern void audit_kill_trees(struct audit_context *context); extern int audit_signal_info_syscall(struct task_struct *t); extern void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx); extern struct list_head *audit_killed_trees(void); #else /* CONFIG_AUDITSYSCALL */ #define auditsc_get_stamp(c, t, s) 0 #define audit_put_watch(w) do { } while (0) #define audit_get_watch(w) do { } while (0) #define audit_to_watch(k, p, l, o) (-EINVAL) #define audit_add_watch(k, l) (-EINVAL) #define audit_remove_watch_rule(k) BUG() #define audit_watch_path(w) "" #define audit_watch_compare(w, i, d) 0 #define audit_alloc_mark(k, p, l) (ERR_PTR(-EINVAL)) #define audit_mark_path(m) "" #define audit_remove_mark(m) do { } while (0) #define audit_remove_mark_rule(k) do { } while (0) #define audit_mark_compare(m, i, d) 0 #define audit_exe_compare(t, m) (-EINVAL) #define audit_dupe_exe(n, o) (-EINVAL) #define audit_remove_tree_rule(rule) BUG() #define audit_add_tree_rule(rule) -EINVAL #define audit_make_tree(rule, str, op) -EINVAL #define audit_trim_trees() do { } while (0) #define audit_put_tree(tree) do { } while (0) #define audit_tag_tree(old, new) -EINVAL #define audit_tree_path(rule) "" /* never called */ #define audit_kill_trees(context) BUG() static inline int audit_signal_info_syscall(struct task_struct *t) { return 0; } #define audit_filter_inodes(t, c) do { } while (0) #endif /* CONFIG_AUDITSYSCALL */ extern char *audit_unpack_string(void **bufp, size_t *remain, size_t len); extern int audit_filter(int msgtype, unsigned int listtype); extern void audit_ctl_lock(void); extern void audit_ctl_unlock(void); #endif ¤ Dauer der Verarbeitung: 0.15 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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2026-03-28