diff options
| author | Eric Paris <eparis@redhat.com> | 2012-01-03 23:23:07 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-18 01:16:59 +0400 |
| commit | efaffd6e4417860c67576ac760dd6e8bbd15f006 (patch) | |
| tree | a59ee886b609bbf761fb75744e5e468264c67ab5 | |
| parent | 6422e78de6880c66a82af512d9bd0c85eb62e661 (diff) | |
| download | linux-efaffd6e4417860c67576ac760dd6e8bbd15f006.tar.xz | |
audit: allow matching on obj_uid
Allow syscall exit filter matching based on the uid of the owner of an
inode used in a syscall. aka:
auditctl -a always,exit -S open -F obj_uid=0 -F perm=wa
Signed-off-by: Eric Paris <eparis@redhat.com>
| -rw-r--r-- | include/linux/audit.h | 1 | ||||
| -rw-r--r-- | kernel/auditfilter.c | 1 | ||||
| -rw-r--r-- | kernel/auditsc.c | 12 |
3 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/audit.h b/include/linux/audit.h index 67b66c37a254..55cb3daaf474 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -223,6 +223,7 @@ #define AUDIT_PERM 106 #define AUDIT_DIR 107 #define AUDIT_FILETYPE 108 +#define AUDIT_OBJ_UID 109 #define AUDIT_ARG0 200 #define AUDIT_ARG1 (AUDIT_ARG0+1) diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c index 903caa269b5c..13e997423dcd 100644 --- a/kernel/auditfilter.c +++ b/kernel/auditfilter.c @@ -461,6 +461,7 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data, case AUDIT_ARG1: case AUDIT_ARG2: case AUDIT_ARG3: + case AUDIT_OBJ_UID: break; case AUDIT_ARCH: entry->rule.arch_f = f; diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 4d8920f5ab88..5cf3ecc01517 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -586,6 +586,18 @@ static int audit_filter_rules(struct task_struct *tsk, } } break; + case AUDIT_OBJ_UID: + if (name) { + result = audit_comparator(name->uid, f->op, f->val); + } else if (ctx) { + list_for_each_entry(n, &ctx->names_list, list) { + if (audit_comparator(n->uid, f->op, f->val)) { + ++result; + break; + } + } + } + break; case AUDIT_WATCH: if (name) result = audit_watch_compare(rule->watch, name->ino, name->dev); |