xnu-1504.3.12.tar.gz

[apple/xnu.git] / bsd / kern / kern_sysctl.c

diff --git a/bsd/kern/kern_sysctl.c b/bsd/kern/kern_sysctl.c
index 7303287c109272dfbb47ab896198fbe60360bd72..842a3e5720abbcca16c9ca4a9562fa15ae92f54d 100644 (file)
--- a/bsd/kern/kern_sysctl.c
+++ b/bsd/kern/kern_sysctl.c
@@ -2365,6 +2365,47 @@ SYSCTL_PROC(_kern, KERN_NETBOOT, netboot,
                0, 0, sysctl_netboot, "I", "");
 #endif
 
+#ifdef CONFIG_IMGSRC_ACCESS
+static int
+sysctl_imgsrcdev 
+(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
+{
+       vfs_context_t ctx = vfs_context_current();
+       vnode_t devvp;
+       int result;
+
+       if (!vfs_context_issuser(ctx)) {
+               return EPERM;
+       }    
+
+       if (imgsrc_rootvnode == NULL) {
+               return ENOENT;
+       }    
+
+       result = vnode_getwithref(imgsrc_rootvnode);
+       if (result != 0) {
+               return result;
+       }
+       
+       devvp = vnode_mount(imgsrc_rootvnode)->mnt_devvp;
+       result = vnode_getwithref(devvp);
+       if (result != 0) {
+               goto out;
+       }
+
+       result = sysctl_io_number(req, vnode_specrdev(devvp), sizeof(dev_t), NULL, NULL);
+
+       vnode_put(devvp);
+out:
+       vnode_put(imgsrc_rootvnode);
+       return result;
+}
+
+SYSCTL_PROC(_kern, OID_AUTO, imgsrcdev,
+               CTLTYPE_INT | CTLFLAG_RD,
+               0, 0, sysctl_imgsrcdev, "I", ""); 
+#endif /* CONFIG_IMGSRC_ACCESS */
+
 static int
 sysctl_usrstack
 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
@@ -2815,3 +2856,12 @@ SYSCTL_INT (_kern, OID_AUTO, stack_size,
 SYSCTL_INT (_kern, OID_AUTO, stack_depth_max,
            CTLFLAG_RD, (int *) &kernel_stack_depth_max, 0, "Max kernel stack depth at interrupt or context switch");
 
+/*
+ * enable back trace for port allocations
+ */
+extern int ipc_portbt;
+
+SYSCTL_INT(_kern, OID_AUTO, ipc_portbt, 
+               CTLFLAG_RW | CTLFLAG_KERN, 
+               &ipc_portbt, 0, "");
+