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audit: force seccomp event logging to honor the audit_enabled flag
Previously we were emitting seccomp audit records regardless of the audit_enabled setting, a deparature from the rest of audit. This patch makes seccomp auditing consistent with the rest of the audit record generation code in that when audit_enabled=0 nothing is logged by the audit subsystem. The bulk of this patch is moving the CONFIG_AUDIT block ahead of the CONFIG_AUDITSYSCALL block in include/linux/audit.h; the only real code change was in the audit_seccomp() definition. Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Paul Moore <pmoore@redhat.com>
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Paul Moore
Paul Moore
parent
d865e573b8
commit
96368701e1
@ -113,6 +113,107 @@ struct filename;
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extern void audit_log_session_info(struct audit_buffer *ab);
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#ifdef CONFIG_AUDIT
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/* These are defined in audit.c */
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/* Public API */
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extern __printf(4, 5)
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void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
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const char *fmt, ...);
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extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
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extern __printf(2, 3)
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void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
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extern void audit_log_end(struct audit_buffer *ab);
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extern bool audit_string_contains_control(const char *string,
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size_t len);
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extern void audit_log_n_hex(struct audit_buffer *ab,
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const unsigned char *buf,
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size_t len);
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extern void audit_log_n_string(struct audit_buffer *ab,
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const char *buf,
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size_t n);
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extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
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const char *string,
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size_t n);
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extern void audit_log_untrustedstring(struct audit_buffer *ab,
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const char *string);
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extern void audit_log_d_path(struct audit_buffer *ab,
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const char *prefix,
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const struct path *path);
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extern void audit_log_key(struct audit_buffer *ab,
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char *key);
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extern void audit_log_link_denied(const char *operation,
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struct path *link);
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extern void audit_log_lost(const char *message);
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#ifdef CONFIG_SECURITY
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extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
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#else
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static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
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{ }
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#endif
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extern int audit_log_task_context(struct audit_buffer *ab);
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extern void audit_log_task_info(struct audit_buffer *ab,
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struct task_struct *tsk);
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extern int audit_update_lsm_rules(void);
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/* Private API (for audit.c only) */
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extern int audit_filter_user(int type);
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extern int audit_filter_type(int type);
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extern int audit_rule_change(int type, __u32 portid, int seq,
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void *data, size_t datasz);
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extern int audit_list_rules_send(struct sk_buff *request_skb, int seq);
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extern u32 audit_enabled;
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#else /* CONFIG_AUDIT */
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static inline __printf(4, 5)
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void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
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const char *fmt, ...)
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{ }
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static inline struct audit_buffer *audit_log_start(struct audit_context *ctx,
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gfp_t gfp_mask, int type)
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{
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return NULL;
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}
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static inline __printf(2, 3)
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void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
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{ }
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static inline void audit_log_end(struct audit_buffer *ab)
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{ }
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static inline void audit_log_n_hex(struct audit_buffer *ab,
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const unsigned char *buf, size_t len)
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{ }
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static inline void audit_log_n_string(struct audit_buffer *ab,
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const char *buf, size_t n)
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{ }
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static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
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const char *string, size_t n)
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{ }
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static inline void audit_log_untrustedstring(struct audit_buffer *ab,
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const char *string)
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{ }
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static inline void audit_log_d_path(struct audit_buffer *ab,
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const char *prefix,
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const struct path *path)
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{ }
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static inline void audit_log_key(struct audit_buffer *ab, char *key)
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{ }
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static inline void audit_log_link_denied(const char *string,
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const struct path *link)
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{ }
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static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
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{ }
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static inline int audit_log_task_context(struct audit_buffer *ab)
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{
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return 0;
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}
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static inline void audit_log_task_info(struct audit_buffer *ab,
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struct task_struct *tsk)
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{ }
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#define audit_enabled 0
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#endif /* CONFIG_AUDIT */
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#ifdef CONFIG_AUDIT_COMPAT_GENERIC
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#define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
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#else
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@ -212,6 +313,9 @@ void audit_core_dumps(long signr);
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static inline void audit_seccomp(unsigned long syscall, long signr, int code)
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{
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if (!audit_enabled)
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return;
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/* Force a record to be reported if a signal was delivered. */
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if (signr || unlikely(!audit_dummy_context()))
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__audit_seccomp(syscall, signr, code);
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@ -446,106 +550,6 @@ static inline bool audit_loginuid_set(struct task_struct *tsk)
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return uid_valid(audit_get_loginuid(tsk));
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}
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#ifdef CONFIG_AUDIT
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/* These are defined in audit.c */
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/* Public API */
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extern __printf(4, 5)
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void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
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const char *fmt, ...);
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extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
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extern __printf(2, 3)
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void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
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extern void audit_log_end(struct audit_buffer *ab);
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extern bool audit_string_contains_control(const char *string,
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size_t len);
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extern void audit_log_n_hex(struct audit_buffer *ab,
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const unsigned char *buf,
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size_t len);
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extern void audit_log_n_string(struct audit_buffer *ab,
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const char *buf,
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size_t n);
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extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
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const char *string,
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size_t n);
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extern void audit_log_untrustedstring(struct audit_buffer *ab,
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const char *string);
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extern void audit_log_d_path(struct audit_buffer *ab,
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const char *prefix,
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const struct path *path);
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extern void audit_log_key(struct audit_buffer *ab,
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char *key);
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extern void audit_log_link_denied(const char *operation,
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struct path *link);
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extern void audit_log_lost(const char *message);
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#ifdef CONFIG_SECURITY
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extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
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#else
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static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
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{ }
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#endif
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extern int audit_log_task_context(struct audit_buffer *ab);
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extern void audit_log_task_info(struct audit_buffer *ab,
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struct task_struct *tsk);
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extern int audit_update_lsm_rules(void);
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/* Private API (for audit.c only) */
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extern int audit_filter_user(int type);
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extern int audit_filter_type(int type);
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extern int audit_rule_change(int type, __u32 portid, int seq,
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void *data, size_t datasz);
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extern int audit_list_rules_send(struct sk_buff *request_skb, int seq);
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extern u32 audit_enabled;
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#else /* CONFIG_AUDIT */
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static inline __printf(4, 5)
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void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
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const char *fmt, ...)
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{ }
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static inline struct audit_buffer *audit_log_start(struct audit_context *ctx,
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gfp_t gfp_mask, int type)
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{
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return NULL;
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}
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static inline __printf(2, 3)
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void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
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{ }
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static inline void audit_log_end(struct audit_buffer *ab)
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{ }
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static inline void audit_log_n_hex(struct audit_buffer *ab,
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const unsigned char *buf, size_t len)
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{ }
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static inline void audit_log_n_string(struct audit_buffer *ab,
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const char *buf, size_t n)
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{ }
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static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
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const char *string, size_t n)
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{ }
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static inline void audit_log_untrustedstring(struct audit_buffer *ab,
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const char *string)
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{ }
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static inline void audit_log_d_path(struct audit_buffer *ab,
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const char *prefix,
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const struct path *path)
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{ }
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static inline void audit_log_key(struct audit_buffer *ab, char *key)
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{ }
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static inline void audit_log_link_denied(const char *string,
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const struct path *link)
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{ }
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static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
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{ }
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static inline int audit_log_task_context(struct audit_buffer *ab)
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{
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return 0;
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}
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static inline void audit_log_task_info(struct audit_buffer *ab,
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struct task_struct *tsk)
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{ }
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#define audit_enabled 0
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#endif /* CONFIG_AUDIT */
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static inline void audit_log_string(struct audit_buffer *ab, const char *buf)
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{
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audit_log_n_string(ab, buf, strlen(buf));
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