From e54dc2431d740a79a6bd013babade99d71b1714f Mon Sep 17 00:00:00 2001 From: Amy Griffis Date: Thu, 29 Mar 2007 18:01:04 -0400 Subject: [PATCH] audit signal recipients When auditing syscalls that send signals, log the pid and security context for each target process. Optimize the data collection by adding a counter for signal-related rules, and avoiding allocating an aux struct unless we have more than one target process. For process groups, collect pid/context data in blocks of 16. Move the audit_signal_info() hook up in check_kill_permission() so we audit attempts where permission is denied. Signed-off-by: Amy Griffis Signed-off-by: Al Viro --- kernel/audit.h | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'kernel/audit.h') diff --git a/kernel/audit.h b/kernel/audit.h index a3370232a390..815d6f5c04ee 100644 --- a/kernel/audit.h +++ b/kernel/audit.h @@ -83,6 +83,7 @@ struct audit_krule { u32 field_count; char *filterkey; /* ties events to rules */ struct audit_field *fields; + struct audit_field *arch_f; /* quick access to arch field */ struct audit_field *inode_f; /* quick access to an inode field */ struct audit_watch *watch; /* associated watch */ struct list_head rlist; /* entry in audit_watch.rules list */ @@ -131,17 +132,19 @@ extern void audit_handle_ievent(struct inotify_watch *, u32, u32, u32, extern int selinux_audit_rule_update(void); #ifdef CONFIG_AUDITSYSCALL -extern void __audit_signal_info(int sig, struct task_struct *t); -static inline void audit_signal_info(int sig, struct task_struct *t) +extern int __audit_signal_info(int sig, struct task_struct *t); +static inline int audit_signal_info(int sig, struct task_struct *t) { - if (unlikely(audit_pid && t->tgid == audit_pid)) - __audit_signal_info(sig, t); + if (unlikely((audit_pid && t->tgid == audit_pid) || + (audit_signals && !audit_dummy_context()))) + return __audit_signal_info(sig, t); + return 0; } extern enum audit_state audit_filter_inodes(struct task_struct *, struct audit_context *); extern void audit_set_auditable(struct audit_context *); #else -#define audit_signal_info(s,t) +#define audit_signal_info(s,t) AUDIT_DISABLED #define audit_filter_inodes(t,c) AUDIT_DISABLED #define audit_set_auditable(c) #endif -- cgit v1.2.1