xnu-792.6.76.tar.gz

[apple/xnu.git] / bsd / dev / random / randomdev.c

diff --git a/bsd/dev/random/randomdev.c b/bsd/dev/random/randomdev.c
index f7830f40eced169f5d1d2b5ae2eccd0df0b033a8..7476567504665f25f90c079c9083160da5dd51dd 100644 (file)
--- a/bsd/dev/random/randomdev.c
+++ b/bsd/dev/random/randomdev.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999-2004 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
@@ -31,12 +31,15 @@
 #include <kern/lock.h>
 #include <sys/time.h>
 #include <sys/malloc.h>
+#include <sys/uio_internal.h>
 
 #include <dev/random/randomdev.h>
 #include <dev/random/YarrowCoreLib/include/yarrow.h>
 
 #define RANDOM_MAJOR  -1 /* let the kernel pick the device number */
 
+d_ioctl_t       random_ioctl;
+
 /*
  * A struct describing which functions will get invoked for certain
  * actions.
@@ -47,9 +50,9 @@ static struct cdevsw random_cdevsw =
        random_close,           /* close */
        random_read,            /* read */
        random_write,           /* write */
-       eno_ioctl,                      /* ioctl */
-       nulldev,                        /* stop */
-       nulldev,                        /* reset */
+       random_ioctl,           /* ioctl */
+       (stop_fcn_t *)nulldev, /* stop */
+       (reset_fcn_t *)nulldev, /* reset */
        NULL,                           /* tty's */
        eno_select,                     /* select */
        eno_mmap,                       /* mmap */
@@ -67,10 +70,11 @@ static mutex_t *gYarrowMutex = 0;
 
 #define RESEED_TICKS 50 /* how long a reseed operation can take */
 
+
 /*
  *Initialize ONLY the Yarrow generator.
  */
-void PreliminarySetup ()
+void PreliminarySetup( void )
 {
     prng_error_status perr;
     struct timeval tt;
@@ -118,7 +122,7 @@ void PreliminarySetup ()
  * and to register ourselves with devfs
  */
 void
-random_init()
+random_init( void )
 {
        int ret;
 
@@ -139,14 +143,29 @@ random_init()
        }
 
        devfs_make_node(makedev (ret, 0), DEVFS_CHAR,
-               UID_ROOT, GID_WHEEL, 0644, "random", 0);
+               UID_ROOT, GID_WHEEL, 0666, "random", 0);
 
        /*
         * also make urandom 
         * (which is exactly the same thing in our context)
         */
        devfs_make_node(makedev (ret, 1), DEVFS_CHAR,
-               UID_ROOT, GID_WHEEL, 0644, "urandom", 0);
+               UID_ROOT, GID_WHEEL, 0666, "urandom", 0);
+}
+
+int
+random_ioctl(  __unused dev_t dev, u_long cmd, __unused caddr_t data, 
+                               __unused int flag, __unused struct proc *p  )
+{
+       switch (cmd) {
+       case FIONBIO:
+       case FIOASYNC:
+               break;
+       default:
+               return ENODEV;
+       }
+
+       return (0);
 }
 
 /*
@@ -155,7 +174,7 @@ random_init()
  */
  
 int
-random_open(dev_t dev, int flags, int devtype, struct proc *p)
+random_open(__unused dev_t dev, int flags, __unused int devtype, __unused struct proc *p)
 {
        if (gRandomError != 0) {
                /* forget it, yarrow didn't come up */
@@ -169,8 +188,10 @@ random_open(dev_t dev, int flags, int devtype, struct proc *p)
        if (flags & FWRITE) {
                if (securelevel >= 2)
                        return (EPERM);
-               if ((securelevel >= 1) && suser(p->p_ucred, &p->p_acflag))
+#ifndef __APPLE__
+               if ((securelevel >= 1) && proc_suser(p))
                        return (EPERM);
+#endif /* !__APPLE__ */
        }
 
        return (0);
@@ -182,7 +203,7 @@ random_open(dev_t dev, int flags, int devtype, struct proc *p)
  */
  
 int
-random_close(dev_t dev, int flags, int mode, struct proc *p)
+random_close(__unused dev_t dev, __unused int flags, __unused int mode, __unused struct proc *p)
 {
        return (0);
 }
@@ -193,7 +214,7 @@ random_close(dev_t dev, int flags, int mode, struct proc *p)
  * prng.
  */
 int
-random_write (dev_t dev, struct uio *uio, int ioflag)
+random_write (__unused dev_t dev, struct uio *uio, __unused int ioflag)
 {
     int retCode = 0;
     char rdBuffer[256];
@@ -207,9 +228,10 @@ random_write (dev_t dev, struct uio *uio, int ioflag)
     
     /* Security server is sending us entropy */
 
-    while (uio->uio_resid > 0 && retCode == 0) {
+    while (uio_resid(uio) > 0 && retCode == 0) {
         /* get the user's data */
-        int bytesToInput = min(uio->uio_resid, sizeof (rdBuffer));
+        // LP64todo - fix this!  uio_resid may be 64-bit value
+        int bytesToInput = min(uio_resid(uio), sizeof (rdBuffer));
         retCode = uiomove(rdBuffer, bytesToInput, uio);
         if (retCode != 0)
             goto /*ugh*/ error_exit;
@@ -240,7 +262,7 @@ error_exit: /* do this to make sure the mutex unlocks. */
  * return data to the caller.  Results unpredictable.
  */ 
 int
-random_read(dev_t dev, struct uio *uio, int ioflag)
+random_read(__unused dev_t dev, struct uio *uio, __unused int ioflag)
 {
     int retCode = 0;
     char wrBuffer[512];
@@ -251,9 +273,10 @@ random_read(dev_t dev, struct uio *uio, int ioflag)
    /* lock down the mutex */
     mutex_lock(gYarrowMutex);
 
-    while (uio->uio_resid > 0 && retCode == 0) {
+    while (uio_resid(uio) > 0 && retCode == 0) {
         /* get the user's data */
-        int bytesToRead = min(uio->uio_resid, sizeof (wrBuffer));
+        // LP64todo - fix this!  uio_resid may be 64-bit value
+        int bytesToRead = min(uio_resid(uio), sizeof (wrBuffer));
         
         /* get the data from Yarrow */
         if (prngOutput(gPrngRef, (BYTE *) wrBuffer, sizeof (wrBuffer)) != 0) {
@@ -294,7 +317,7 @@ read_random(void* buffer, u_int numbytes)
  * Return an unsigned long pseudo-random number.
  */
 u_long
-RandomULong()
+RandomULong( void )
 {
        u_long buf;
        read_random(&buf, sizeof (buf));