[PATCH] return records for fork() both to child and parent

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
yi-yang · Dec 9, 2008 · a64e649 · a64e649
1 parent a3f0711
commit a64e649
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Showing 3 changed files with 20 additions and 0 deletions.
diff --git a/include/linux/audit.h b/include/linux/audit.h
@@ -391,6 +391,7 @@ extern int audit_classify_arch(int arch);
 #ifdef CONFIG_AUDITSYSCALL
 /* These are defined in auditsc.c */
 				/* Public API */
+extern void audit_finish_fork(struct task_struct *child);
 extern int  audit_alloc(struct task_struct *task);
 extern void audit_free(struct task_struct *task);
 extern void audit_syscall_entry(int arch,
@@ -504,6 +505,7 @@ static inline int audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
 extern int audit_n_rules;
 extern int audit_signals;
 #else
+#define audit_finish_fork(t)
 #define audit_alloc(t) ({ 0; })
 #define audit_free(t) do { ; } while (0)
 #define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
@@ -1548,6 +1548,23 @@ void audit_syscall_entry(int arch, int major,
 	context->ppid       = 0;
 }
 
+void audit_finish_fork(struct task_struct *child)
+{
+	struct audit_context *ctx = current->audit_context;
+	struct audit_context *p = child->audit_context;
+	if (!p || !ctx || !ctx->auditable)
+		return;
+	p->arch = ctx->arch;
+	p->major = ctx->major;
+	memcpy(p->argv, ctx->argv, sizeof(ctx->argv));
+	p->ctime = ctx->ctime;
+	p->dummy = ctx->dummy;
+	p->auditable = ctx->auditable;
+	p->in_syscall = ctx->in_syscall;
+	p->filterkey = kstrdup(ctx->filterkey, GFP_KERNEL);
+	p->ppid = current->pid;
+}
+
 /**
  * audit_syscall_exit - deallocate audit context after a system call
  * @tsk: task being audited

diff --git a/kernel/fork.c b/kernel/fork.c
@@ -1398,6 +1398,7 @@ long do_fork(unsigned long clone_flags,
 			init_completion(&vfork);
 		}
 
+		audit_finish_fork(p);
 		tracehook_report_clone(trace, regs, clone_flags, nr, p);
 
 		/*
-Original file line number
+Diff line change
@@ Expand Up / @@ -1398,6 +1398,7 @@ long do_fork(unsigned long clone_flags, @@
     			init_completion(&vfork);
     		}
+    		audit_finish_fork(p);
     		tracehook_report_clone(trace, regs, clone_flags, nr, p);
     		/*
@@ Expand Down @@