X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d7e50217d7adf6e52786a38bcaa4cd698cb9a79e..13fec9890cf095cc781fdf7b8917cb03bf32dd4c:/bsd/dev/random/randomdev.c diff --git a/bsd/dev/random/randomdev.c b/bsd/dev/random/randomdev.c index 96f997e24..747656750 100644 --- a/bsd/dev/random/randomdev.c +++ b/bsd/dev/random/randomdev.c @@ -1,24 +1,21 @@ /* - * 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@ * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. + * The contents of this file constitute Original Code as defined in and + * are subject to the Apple Public Source License Version 1.1 (the + * "License"). You may not use this file except in compliance with the + * License. Please obtain a copy of the License at + * http://www.apple.com/publicsource and read it before using this file. * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * This Original Code and all software distributed under the License are + * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. + * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the + * License for the specific language governing rights and limitations + * under the License. * * @APPLE_LICENSE_HEADER_END@ */ @@ -34,12 +31,15 @@ #include #include #include +#include #include #include #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. @@ -50,9 +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 */ @@ -70,10 +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; @@ -121,7 +122,7 @@ void PreliminarySetup () * and to register ourselves with devfs */ void -random_init() +random_init( void ) { int ret; @@ -142,14 +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); } /* @@ -158,7 +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 */ @@ -172,8 +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); @@ -185,7 +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); } @@ -196,7 +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]; @@ -210,9 +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; @@ -243,7 +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]; @@ -254,9 +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) { @@ -297,7 +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));