Module Name: src Committed By: maxv Date: Wed Jun 14 17:48:41 UTC 2017
Modified Files: src/sys/arch/x86/x86: pmc.c src/sys/secmodel/suser: secmodel_suser.c src/sys/sys: kauth.h Log Message: Make the PMC syscalls privileged. To generate a diff of this commit: cvs rdiff -u -r1.7 -r1.8 src/sys/arch/x86/x86/pmc.c cvs rdiff -u -r1.42 -r1.43 src/sys/secmodel/suser/secmodel_suser.c cvs rdiff -u -r1.73 -r1.74 src/sys/sys/kauth.h Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/arch/x86/x86/pmc.c diff -u src/sys/arch/x86/x86/pmc.c:1.7 src/sys/arch/x86/x86/pmc.c:1.8 --- src/sys/arch/x86/x86/pmc.c:1.7 Tue May 23 08:54:39 2017 +++ src/sys/arch/x86/x86/pmc.c Wed Jun 14 17:48:40 2017 @@ -1,4 +1,4 @@ -/* $NetBSD: pmc.c,v 1.7 2017/05/23 08:54:39 nonaka Exp $ */ +/* $NetBSD: pmc.c,v 1.8 2017/06/14 17:48:40 maxv Exp $ */ /* * Copyright (c) 2017 The NetBSD Foundation, Inc. @@ -67,13 +67,14 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: pmc.c,v 1.7 2017/05/23 08:54:39 nonaka Exp $"); +__KERNEL_RCSID(0, "$NetBSD: pmc.c,v 1.8 2017/06/14 17:48:40 maxv Exp $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/proc.h> #include <sys/cpu.h> #include <sys/xcall.h> +#include <sys/kauth.h> #include <machine/cpufunc.h> #include <machine/cpuvar.h> @@ -325,6 +326,12 @@ int sys_pmc_info(struct lwp *l, struct x86_pmc_info_args *uargs, register_t *retval) { struct x86_pmc_info_args rv; + int error; + + error = kauth_authorize_machdep(l->l_cred, KAUTH_MACHDEP_X86PMC, + NULL, NULL, NULL, NULL); + if (error) + return error; memset(&rv, 0, sizeof(rv)); @@ -344,6 +351,11 @@ sys_pmc_startstop(struct lwp *l, struct bool start; int error; + error = kauth_authorize_machdep(l->l_cred, KAUTH_MACHDEP_X86PMC, + NULL, NULL, NULL, NULL); + if (error) + return error; + if (pmc_type == PMC_TYPE_NONE) return ENODEV; @@ -386,6 +398,11 @@ sys_pmc_read(struct lwp *l, struct x86_p size_t nval; int error; + error = kauth_authorize_machdep(l->l_cred, KAUTH_MACHDEP_X86PMC, + NULL, NULL, NULL, NULL); + if (error) + return error; + if (pmc_type == PMC_TYPE_NONE) return ENODEV; Index: src/sys/secmodel/suser/secmodel_suser.c diff -u src/sys/secmodel/suser/secmodel_suser.c:1.42 src/sys/secmodel/suser/secmodel_suser.c:1.43 --- src/sys/secmodel/suser/secmodel_suser.c:1.42 Mon Aug 17 06:16:03 2015 +++ src/sys/secmodel/suser/secmodel_suser.c Wed Jun 14 17:48:41 2017 @@ -1,4 +1,4 @@ -/* $NetBSD: secmodel_suser.c,v 1.42 2015/08/17 06:16:03 knakahara Exp $ */ +/* $NetBSD: secmodel_suser.c,v 1.43 2017/06/14 17:48:41 maxv Exp $ */ /*- * Copyright (c) 2006 Elad Efrat <e...@netbsd.org> * All rights reserved. @@ -38,7 +38,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: secmodel_suser.c,v 1.42 2015/08/17 06:16:03 knakahara Exp $"); +__KERNEL_RCSID(0, "$NetBSD: secmodel_suser.c,v 1.43 2017/06/14 17:48:41 maxv Exp $"); #include <sys/types.h> #include <sys/param.h> @@ -834,13 +834,13 @@ int secmodel_suser_machdep_cb(kauth_cred_t cred, kauth_action_t action, void *cookie, void *arg0, void *arg1, void *arg2, void *arg3) { - bool isroot; - int result; + bool isroot; + int result; - isroot = suser_isroot(cred); - result = KAUTH_RESULT_DEFER; + isroot = suser_isroot(cred); + result = KAUTH_RESULT_DEFER; - switch (action) { + switch (action) { case KAUTH_MACHDEP_CPU_UCODE_APPLY: case KAUTH_MACHDEP_IOPERM_GET: case KAUTH_MACHDEP_LDT_GET: @@ -853,6 +853,7 @@ secmodel_suser_machdep_cb(kauth_cred_t c case KAUTH_MACHDEP_NVRAM: case KAUTH_MACHDEP_UNMANAGEDMEM: case KAUTH_MACHDEP_PXG: + case KAUTH_MACHDEP_X86PMC: if (isroot) result = KAUTH_RESULT_ALLOW; break; @@ -875,11 +876,11 @@ int secmodel_suser_device_cb(kauth_cred_t cred, kauth_action_t action, void *cookie, void *arg0, void *arg1, void *arg2, void *arg3) { - bool isroot; - int result; + bool isroot; + int result; - isroot = suser_isroot(cred); - result = KAUTH_RESULT_DEFER; + isroot = suser_isroot(cred); + result = KAUTH_RESULT_DEFER; switch (action) { case KAUTH_DEVICE_BLUETOOTH_SETPRIV: Index: src/sys/sys/kauth.h diff -u src/sys/sys/kauth.h:1.73 src/sys/sys/kauth.h:1.74 --- src/sys/sys/kauth.h:1.73 Tue Oct 6 22:13:39 2015 +++ src/sys/sys/kauth.h Wed Jun 14 17:48:41 2017 @@ -1,4 +1,4 @@ -/* $NetBSD: kauth.h,v 1.73 2015/10/06 22:13:39 christos Exp $ */ +/* $NetBSD: kauth.h,v 1.74 2017/06/14 17:48:41 maxv Exp $ */ /*- * Copyright (c) 2005, 2006 Elad Efrat <e...@netbsd.org> @@ -321,6 +321,7 @@ enum { KAUTH_MACHDEP_NVRAM, KAUTH_MACHDEP_UNMANAGEDMEM, KAUTH_MACHDEP_PXG, + KAUTH_MACHDEP_X86PMC }; /*