audit mmap
Normal syscall audit doesn't catch 5th argument of syscall. It also
doesn't catch the contents of userland structures pointed to be
syscall argument, so for both old and new mmap(2) ABI it doesn't
record the descriptor we are mapping. For old one it also misses
flags.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/mm/mmap.c b/mm/mmap.c
index 00161a4..b179abb 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -28,6 +28,7 @@
#include <linux/rmap.h>
#include <linux/mmu_notifier.h>
#include <linux/perf_event.h>
+#include <linux/audit.h>
#include <asm/uaccess.h>
#include <asm/cacheflush.h>
@@ -1108,6 +1109,7 @@
unsigned long retval = -EBADF;
if (!(flags & MAP_ANONYMOUS)) {
+ audit_mmap_fd(fd, flags);
if (unlikely(flags & MAP_HUGETLB))
return -EINVAL;
file = fget(fd);
diff --git a/mm/nommu.c b/mm/nommu.c
index 30b5c20..3613517 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -29,6 +29,7 @@
#include <linux/personality.h>
#include <linux/security.h>
#include <linux/syscalls.h>
+#include <linux/audit.h>
#include <asm/uaccess.h>
#include <asm/tlb.h>
@@ -1458,6 +1459,7 @@
struct file *file = NULL;
unsigned long retval = -EBADF;
+ audit_mmap_fd(fd, flags);
if (!(flags & MAP_ANONYMOUS)) {
file = fget(fd);
if (!file)