xnu-4570.41.2.tar.gz

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

diff --git a/bsd/kern/kern_xxx.c b/bsd/kern/kern_xxx.c
index fc94a14e09f171f30e9eb5ffcdf62e3a2493dda6..c922c1641894ee97851121a48153fbb060e48531 100644 (file)
--- a/bsd/kern/kern_xxx.c
+++ b/bsd/kern/kern_xxx.c
@@ -85,10 +85,13 @@
 #include <security/mac_framework.h>
 #endif
 
+int pshm_cache_purge_all(proc_t p);
+int psem_cache_purge_all(proc_t p);
+
 int
-reboot(struct proc *p, register struct reboot_args *uap, __unused int32_t *retval)
+reboot(struct proc *p, struct reboot_args *uap, __unused int32_t *retval)
 {
-       char command[64];
+       char message[256];
        int error=0;
        size_t dummy=0;
 #if CONFIG_MACF
@@ -97,24 +100,60 @@ reboot(struct proc *p, register struct reboot_args *uap, __unused int32_t *retva
 
        AUDIT_ARG(cmd, uap->opt);
 
-       command[0] = '\0';
+       message[0] = '\0';
+
+       if ((error = suser(kauth_cred_get(), &p->p_acflag))) {
+#if (DEVELOPMENT || DEBUG)
+               /* allow non-root user to call panic on dev/debug kernels */
+               if (!(uap->opt & RB_PANIC))
+                       return error;
+#else
+               return error;
+#endif
+       }
 
-       if ((error = suser(kauth_cred_get(), &p->p_acflag)))
-               return(error);  
-       
        if (uap->opt & RB_COMMAND)
-               error = copyinstr(uap->command,
-                                       (void *)command, sizeof(command), (size_t *)&dummy);
+                return ENOSYS;
+
+        if (uap->opt & RB_PANIC) {
+               error = copyinstr(uap->command, (void *)message, sizeof(message), (size_t *)&dummy);
+        }
+
 #if CONFIG_MACF
+#if (DEVELOPMENT || DEBUG)
+        if (uap->opt & RB_PANIC) {
+               /* on dev/debug kernels: allow anyone to call panic */
+               goto skip_cred_check;
+       }
+#endif
        if (error)
                return (error);
        my_cred = kauth_cred_proc_ref(p);
        error = mac_system_check_reboot(my_cred, uap->opt);
        kauth_cred_unref(&my_cred);
+#if (DEVELOPMENT || DEBUG)
+skip_cred_check:
+#endif
 #endif
        if (!error) {
                OSBitOrAtomic(P_REBOOT, &p->p_flag);  /* No more signals for this proc */
-               error = boot(RB_BOOT, uap->opt, command);
+               error = reboot_kernel(uap->opt, message);
        }
        return(error);
 }
+
+int
+usrctl(struct proc *p, __unused struct usrctl_args *uap, __unused int32_t *retval)
+{
+       if (p != initproc) {
+               return EPERM;
+       }
+
+       int error = 0;
+       error = pshm_cache_purge_all(p);
+       if (error)
+               return error;
+
+       error = psem_cache_purge_all(p);
+       return error;
+}