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| author | Amy Griffis <amy.griffis@hp.com> | 2007-03-29 18:01:04 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2007-05-11 05:38:25 -0400 |
| commit | e54dc2431d740a79a6bd013babade99d71b1714f (patch) | |
| tree | 16b0990d5c16946239a17b332f54b5918fb03305 /kernel/audit.h | |
| parent | 7f13da40e36c84d0d046b7adbd060af7d3717250 (diff) | |
| download | lwn-e54dc2431d740a79a6bd013babade99d71b1714f.tar.gz lwn-e54dc2431d740a79a6bd013babade99d71b1714f.zip | |
[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 <amy.griffis@hp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/audit.h')
| -rw-r--r-- | kernel/audit.h | 13 |
1 files changed, 8 insertions, 5 deletions
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 |