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>
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@ -223,6 +223,7 @@
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#define AUDIT_PERM 106
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#define AUDIT_DIR 107
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#define AUDIT_FILETYPE 108
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#define AUDIT_OBJ_UID 109
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#define AUDIT_ARG0 200
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#define AUDIT_ARG1 (AUDIT_ARG0+1)
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@ -461,6 +461,7 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
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case AUDIT_ARG1:
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case AUDIT_ARG2:
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case AUDIT_ARG3:
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case AUDIT_OBJ_UID:
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break;
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case AUDIT_ARCH:
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entry->rule.arch_f = f;
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@ -586,6 +586,18 @@ static int audit_filter_rules(struct task_struct *tsk,
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}
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}
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break;
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case AUDIT_OBJ_UID:
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if (name) {
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result = audit_comparator(name->uid, f->op, f->val);
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} else if (ctx) {
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list_for_each_entry(n, &ctx->names_list, list) {
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if (audit_comparator(n->uid, f->op, f->val)) {
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++result;
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break;
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}
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}
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}
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break;
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case AUDIT_WATCH:
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if (name)
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result = audit_watch_compare(rule->watch, name->ino, name->dev);
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