diff options
Diffstat (limited to 'security/selinux/hooks.c')
| -rw-r--r-- | security/selinux/hooks.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index b29059ecc045..78c3f98fcdcf 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -2569,12 +2569,16 @@ static int file_map_prot_check(struct file *file, unsigned long prot, int shared } static int selinux_file_mmap(struct file *file, unsigned long reqprot, - unsigned long prot, unsigned long flags) + unsigned long prot, unsigned long flags, + unsigned long addr, unsigned long addr_only) { - int rc; + int rc = 0; + u32 sid = ((struct task_security_struct*)(current->security))->sid; - rc = secondary_ops->file_mmap(file, reqprot, prot, flags); - if (rc) + if (addr < mmap_min_addr) + rc = avc_has_perm(sid, sid, SECCLASS_MEMPROTECT, + MEMPROTECT__MMAP_ZERO, NULL); + if (rc || addr_only) return rc; if (selinux_checkreqprot) |