split ->file_mmap() into ->mmap_addr()/->mmap_file()
... i.e. file-dependent and address-dependent checks.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 25c125e..372ec65 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3083,9 +3083,7 @@
return rc;
}
-static int selinux_file_mmap(struct file *file, unsigned long reqprot,
- unsigned long prot, unsigned long flags,
- unsigned long addr, unsigned long addr_only)
+static int selinux_mmap_addr(unsigned long addr)
{
int rc = 0;
u32 sid = current_sid();
@@ -3104,10 +3102,12 @@
}
/* do DAC check on address space usage */
- rc = cap_mmap_addr(addr);
- if (rc || addr_only)
- return rc;
+ return cap_mmap_addr(addr);
+}
+static int selinux_mmap_file(struct file *file, unsigned long reqprot,
+ unsigned long prot, unsigned long flags)
+{
if (selinux_checkreqprot)
prot = reqprot;
@@ -5570,7 +5570,8 @@
.file_alloc_security = selinux_file_alloc_security,
.file_free_security = selinux_file_free_security,
.file_ioctl = selinux_file_ioctl,
- .file_mmap = selinux_file_mmap,
+ .mmap_file = selinux_mmap_file,
+ .mmap_addr = selinux_mmap_addr,
.file_mprotect = selinux_file_mprotect,
.file_lock = selinux_file_lock,
.file_fcntl = selinux_file_fcntl,