/** @file * SUP - Support Library. (HDrv) */ /* * Copyright (C) 2006-2007 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ #ifndef ___VBox_sup_h #define ___VBox_sup_h #include #include #include #include #include RT_C_DECLS_BEGIN /** @defgroup grp_sup The Support Library API * @{ */ /** * Physical page descriptor. */ #pragma pack(4) /* space is more important. */ typedef struct SUPPAGE { /** Physical memory address. */ RTHCPHYS Phys; /** Reserved entry for internal use by the caller. */ RTHCUINTPTR uReserved; } SUPPAGE; #pragma pack() /** Pointer to a page descriptor. */ typedef SUPPAGE *PSUPPAGE; /** Pointer to a const page descriptor. */ typedef const SUPPAGE *PCSUPPAGE; /** * The paging mode. * * @remarks Users are making assumptions about the order here! */ typedef enum SUPPAGINGMODE { /** The usual invalid entry. * This is returned by SUPR3GetPagingMode() */ SUPPAGINGMODE_INVALID = 0, /** Normal 32-bit paging, no global pages */ SUPPAGINGMODE_32_BIT, /** Normal 32-bit paging with global pages. */ SUPPAGINGMODE_32_BIT_GLOBAL, /** PAE mode, no global pages, no NX. */ SUPPAGINGMODE_PAE, /** PAE mode with global pages. */ SUPPAGINGMODE_PAE_GLOBAL, /** PAE mode with NX, no global pages. */ SUPPAGINGMODE_PAE_NX, /** PAE mode with global pages and NX. */ SUPPAGINGMODE_PAE_GLOBAL_NX, /** AMD64 mode, no global pages. */ SUPPAGINGMODE_AMD64, /** AMD64 mode with global pages, no NX. */ SUPPAGINGMODE_AMD64_GLOBAL, /** AMD64 mode with NX, no global pages. */ SUPPAGINGMODE_AMD64_NX, /** AMD64 mode with global pages and NX. */ SUPPAGINGMODE_AMD64_GLOBAL_NX } SUPPAGINGMODE; #pragma pack(1) /* paranoia */ /** * Per CPU data. * This is only used when */ typedef struct SUPGIPCPU { /** Update transaction number. * This number is incremented at the start and end of each update. It follows * thusly that odd numbers indicates update in progress, while even numbers * indicate stable data. Use this to make sure that the data items you fetch * are consistent. */ volatile uint32_t u32TransactionId; /** The interval in TSC ticks between two NanoTS updates. * This is the average interval over the last 2, 4 or 8 updates + a little slack. * The slack makes the time go a tiny tiny bit slower and extends the interval enough * to avoid ending up with too many 1ns increments. */ volatile uint32_t u32UpdateIntervalTSC; /** Current nanosecond timestamp. */ volatile uint64_t u64NanoTS; /** The TSC at the time of u64NanoTS. */ volatile uint64_t u64TSC; /** Current CPU Frequency. */ volatile uint64_t u64CpuHz; /** Number of errors during updating. * Typical errors are under/overflows. */ volatile uint32_t cErrors; /** Index of the head item in au32TSCHistory. */ volatile uint32_t iTSCHistoryHead; /** Array of recent TSC interval deltas. * The most recent item is at index iTSCHistoryHead. * This history is used to calculate u32UpdateIntervalTSC. */ volatile uint32_t au32TSCHistory[8]; /** The interval between the last two NanoTS updates. (experiment for now) */ volatile uint32_t u32PrevUpdateIntervalNS; /** Reserved for future per processor data. */ volatile uint32_t au32Reserved[5]; } SUPGIPCPU; AssertCompileSize(SUPGIPCPU, 96); /*AssertCompileMemberAlignment(SUPGIPCPU, u64TSC, 8); -fixme */ /** Pointer to per cpu data. * @remark there is no const version of this typedef, see g_pSUPGlobalInfoPage for details. */ typedef SUPGIPCPU *PSUPGIPCPU; /** * Global Information Page. * * This page contains useful information and can be mapped into any * process or VM. It can be accessed thru the g_pSUPGlobalInfoPage * pointer when a session is open. */ typedef struct SUPGLOBALINFOPAGE { /** Magic (SUPGLOBALINFOPAGE_MAGIC). */ uint32_t u32Magic; /** The GIP version. */ uint32_t u32Version; /** The GIP update mode, see SUPGIPMODE. */ uint32_t u32Mode; /** Reserved / padding. */ uint32_t u32Padding0; /** The update frequency of the of the NanoTS. */ volatile uint32_t u32UpdateHz; /** The update interval in nanoseconds. (10^9 / u32UpdateHz) */ volatile uint32_t u32UpdateIntervalNS; /** The timestamp of the last time we update the update frequency. */ volatile uint64_t u64NanoTSLastUpdateHz; /** Padding / reserved space for future data. */ uint32_t au32Padding1[56]; /** Array of per-cpu data. * If u32Mode == SUPGIPMODE_SYNC_TSC then only the first entry is used. * If u32Mode == SUPGIPMODE_ASYNC_TSC then the CPU ACPI ID is used as an * index into the array. */ SUPGIPCPU aCPUs[32]; } SUPGLOBALINFOPAGE; AssertCompile(sizeof(SUPGLOBALINFOPAGE) <= 0x1000); /* AssertCompileMemberAlignment(SUPGLOBALINFOPAGE, aCPU, 32); - fixme */ /** Pointer to the global info page. * @remark there is no const version of this typedef, see g_pSUPGlobalInfoPage for details. */ typedef SUPGLOBALINFOPAGE *PSUPGLOBALINFOPAGE; #pragma pack() /* end of paranoia */ /** The value of the SUPGLOBALINFOPAGE::u32Magic field. (Soryo Fuyumi) */ #define SUPGLOBALINFOPAGE_MAGIC 0x19590106 /** The GIP version. * Upper 16 bits is the major version. Major version is only changed with * incompatible changes in the GIP. */ #define SUPGLOBALINFOPAGE_VERSION 0x00020000 /** * SUPGLOBALINFOPAGE::u32Mode values. */ typedef enum SUPGIPMODE { /** The usual invalid null entry. */ SUPGIPMODE_INVALID = 0, /** The TSC of the cores and cpus in the system is in sync. */ SUPGIPMODE_SYNC_TSC, /** Each core has it's own TSC. */ SUPGIPMODE_ASYNC_TSC, /** The usual 32-bit hack. */ SUPGIPMODE_32BIT_HACK = 0x7fffffff } SUPGIPMODE; /** Pointer to the Global Information Page. * * This pointer is valid as long as SUPLib has a open session. Anyone using * the page must treat this pointer as higly volatile and not trust it beyond * one transaction. * * @remark The GIP page is read-only to everyone but the support driver and * is actually mapped read only everywhere but in ring-0. However * it is not marked 'const' as this might confuse compilers into * thinking that values doesn't change even if members are marked * as volatile. Thus, there is no PCSUPGLOBALINFOPAGE type. */ #if defined(IN_SUP_R0) || defined(IN_SUP_R3) || defined(IN_SUP_RC) extern DECLEXPORT(PSUPGLOBALINFOPAGE) g_pSUPGlobalInfoPage; #elif !defined(IN_RING0) || defined(RT_OS_WINDOWS) extern DECLIMPORT(PSUPGLOBALINFOPAGE) g_pSUPGlobalInfoPage; #else /* IN_RING0 && !RT_OS_WINDOWS */ # if !defined(__GNUC__) || defined(RT_OS_DARWIN) || !defined(RT_ARCH_AMD64) # define g_pSUPGlobalInfoPage (&g_SUPGlobalInfoPage) # else # define g_pSUPGlobalInfoPage (SUPGetGIPHlp()) /** Workaround for ELF+GCC problem on 64-bit hosts. * (GCC emits a mov with a R_X86_64_32 reloc, we need R_X86_64_64.) */ DECLINLINE(PSUPGLOBALINFOPAGE) SUPGetGIPHlp(void) { PSUPGLOBALINFOPAGE pGIP; __asm__ __volatile__ ("movabs $g_SUPGlobalInfoPage,%0\n\t" : "=a" (pGIP)); return pGIP; } # endif /** The GIP. * We save a level of indirection by exporting the GIP instead of a variable * pointing to it. */ extern DECLIMPORT(SUPGLOBALINFOPAGE) g_SUPGlobalInfoPage; #endif /** * Gets the GIP pointer. * * @returns Pointer to the GIP or NULL. */ SUPDECL(PSUPGLOBALINFOPAGE) SUPGetGIP(void); /** * Gets the TSC frequency of the calling CPU. * * @returns TSC frequency. * @param pGip The GIP pointer. */ DECLINLINE(uint64_t) SUPGetCpuHzFromGIP(PSUPGLOBALINFOPAGE pGip) { unsigned iCpu; if (RT_UNLIKELY(!pGip || pGip->u32Magic != SUPGLOBALINFOPAGE_MAGIC)) return ~(uint64_t)0; if (pGip->u32Mode != SUPGIPMODE_ASYNC_TSC) iCpu = 0; else { iCpu = ASMGetApicId(); if (RT_UNLIKELY(iCpu >= RT_ELEMENTS(pGip->aCPUs))) return ~(uint64_t)0; } return pGip->aCPUs[iCpu].u64CpuHz; } /** * Request for generic VMMR0Entry calls. */ typedef struct SUPVMMR0REQHDR { /** The magic. (SUPVMMR0REQHDR_MAGIC) */ uint32_t u32Magic; /** The size of the request. */ uint32_t cbReq; } SUPVMMR0REQHDR; /** Pointer to a ring-0 request header. */ typedef SUPVMMR0REQHDR *PSUPVMMR0REQHDR; /** the SUPVMMR0REQHDR::u32Magic value (Ethan Iverson - The Bad Plus). */ #define SUPVMMR0REQHDR_MAGIC UINT32_C(0x19730211) /** For the fast ioctl path. * @{ */ /** @see VMMR0_DO_RAW_RUN. */ #define SUP_VMMR0_DO_RAW_RUN 0 /** @see VMMR0_DO_HWACC_RUN. */ #define SUP_VMMR0_DO_HWACC_RUN 1 /** @see VMMR0_DO_NOP */ #define SUP_VMMR0_DO_NOP 2 /** @} */ /** SUPR3QueryVTCaps capability flags * @{ */ #define SUPVTCAPS_AMD_V RT_BIT(0) #define SUPVTCAPS_VT_X RT_BIT(1) #define SUPVTCAPS_NESTED_PAGING RT_BIT(2) /** @} */ /** * Request for generic FNSUPR0SERVICEREQHANDLER calls. */ typedef struct SUPR0SERVICEREQHDR { /** The magic. (SUPR0SERVICEREQHDR_MAGIC) */ uint32_t u32Magic; /** The size of the request. */ uint32_t cbReq; } SUPR0SERVICEREQHDR; /** Pointer to a ring-0 service request header. */ typedef SUPR0SERVICEREQHDR *PSUPR0SERVICEREQHDR; /** the SUPVMMR0REQHDR::u32Magic value (Esbjoern Svensson - E.S.P.). */ #define SUPR0SERVICEREQHDR_MAGIC UINT32_C(0x19640416) /** Event semaphore handle. Ring-0 / ring-3. */ typedef R0PTRTYPE(struct SUPSEMEVENTHANDLE *) SUPSEMEVENT; /** Pointer to an event semaphore handle. */ typedef SUPSEMEVENT *PSUPSEMEVENT; /** Nil event semaphore handle. */ #define NIL_SUPSEMEVENT ((SUPSEMEVENT)0) /** * Creates a single release event semaphore. * * @returns VBox status code. * @param pSession The session handle of the caller. * @param phEvent Where to return the handle to the event semaphore. */ SUPDECL(int) SUPSemEventCreate(PSUPDRVSESSION pSession, PSUPSEMEVENT phEvent); /** * Closes a single release event semaphore handle. * * @returns VBox status code. * @retval VINF_OBJECT_DESTROYED if the semaphore was destroyed. * @retval VINF_SUCCESS if the handle was successfully closed but the sempahore * object remained alive because of other references. * * @param pSession The session handle of the caller. * @param hEvent The handle. Nil is quietly ignored. */ SUPDECL(int) SUPSemEventClose(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent); /** * Signals a single release event semaphore. * * @returns VBox status code. * @param pSession The session handle of the caller. * @param hEvent The semaphore handle. */ SUPDECL(int) SUPSemEventSignal(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent); #ifdef IN_RING0 /** * Waits on a single release event semaphore, not interruptible. * * @returns VBox status code. * @param pSession The session handle of the caller. * @param hEvent The semaphore handle. * @param cMillies The number of milliseconds to wait. * @remarks Not available in ring-3. */ SUPDECL(int) SUPSemEventWait(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint32_t cMillies); #endif /** * Waits on a single release event semaphore, interruptible. * * @returns VBox status code. * @param pSession The session handle of the caller. * @param hEvent The semaphore handle. * @param cMillies The number of milliseconds to wait. */ SUPDECL(int) SUPSemEventWaitNoResume(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint32_t cMillies); /** Multiple release event semaphore handle. Ring-0 / ring-3. */ typedef R0PTRTYPE(struct SUPSEMEVENTMULTIHANDLE *) SUPSEMEVENTMULTI; /** Pointer to an multiple release event semaphore handle. */ typedef SUPSEMEVENTMULTI *PSUPSEMEVENTMULTI; /** Nil multiple release event semaphore handle. */ #define NIL_SUPSEMEVENTMULTI ((SUPSEMEVENTMULTI)0) /** * Creates a multiple release event semaphore. * * @returns VBox status code. * @param pSession The session handle of the caller. * @param phEventMulti Where to return the handle to the event semaphore. */ SUPDECL(int) SUPSemEventMultiCreate(PSUPDRVSESSION pSession, PSUPSEMEVENTMULTI phEventMulti); /** * Closes a multiple release event semaphore handle. * * @returns VBox status code. * @retval VINF_OBJECT_DESTROYED if the semaphore was destroyed. * @retval VINF_SUCCESS if the handle was successfully closed but the sempahore * object remained alive because of other references. * * @param pSession The session handle of the caller. * @param hEventMulti The handle. Nil is quietly ignored. */ SUPDECL(int) SUPSemEventMultiClose(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti); /** * Signals a multiple release event semaphore. * * @returns VBox status code. * @param pSession The session handle of the caller. * @param hEventMulti The semaphore handle. */ SUPDECL(int) SUPSemEventMultiSignal(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti); /** * Resets a multiple release event semaphore. * * @returns VBox status code. * @param pSession The session handle of the caller. * @param hEventMulti The semaphore handle. */ SUPDECL(int) SUPSemEventMultiReset(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti); #ifdef IN_RING0 /** * Waits on a multiple release event semaphore, not interruptible. * * @returns VBox status code. * @param pSession The session handle of the caller. * @param hEventMulti The semaphore handle. * @param cMillies The number of milliseconds to wait. * @remarks Not available in ring-3. */ SUPDECL(int) SUPSemEventMultiWait(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint32_t cMillies); #endif /** * Waits on a multiple release event semaphore, interruptible. * * @returns VBox status code. * @param pSession The session handle of the caller. * @param hEventMulti The semaphore handle. * @param cMillies The number of milliseconds to wait. */ SUPDECL(int) SUPSemEventMultiWaitNoResume(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint32_t cMillies); #ifdef IN_RING3 /** @defgroup grp_sup_r3 SUP Host Context Ring-3 API * @ingroup grp_sup * @{ */ /** * Installs the support library. * * @returns VBox status code. */ SUPR3DECL(int) SUPR3Install(void); /** * Uninstalls the support library. * * @returns VBox status code. */ SUPR3DECL(int) SUPR3Uninstall(void); /** * Trusted main entry point. * * This is exported as "TrustedMain" by the dynamic libraries which contains the * "real" application binary for which the hardened stub is built. The entry * point is invoked upon successfull initialization of the support library and * runtime. * * @returns main kind of exit code. * @param argc The argument count. * @param argv The argument vector. * @param envp The environment vector. */ typedef DECLCALLBACK(int) FNSUPTRUSTEDMAIN(int argc, char **argv, char **envp); /** Pointer to FNSUPTRUSTEDMAIN(). */ typedef FNSUPTRUSTEDMAIN *PFNSUPTRUSTEDMAIN; /** Which operation failed. */ typedef enum SUPINITOP { /** Invalid. */ kSupInitOp_Invalid = 0, /** Installation integrity error. */ kSupInitOp_Integrity, /** Setuid related. */ kSupInitOp_RootCheck, /** Driver related. */ kSupInitOp_Driver, /** IPRT init related. */ kSupInitOp_IPRT, /** Place holder. */ kSupInitOp_End } SUPINITOP; /** * Trusted error entry point, optional. * * This is exported as "TrustedError" by the dynamic libraries which contains * the "real" application binary for which the hardened stub is built. * * @param pszWhere Where the error occured (function name). * @param enmWhat Which operation went wrong. * @param rc The status code. * @param pszMsgFmt Error message format string. * @param va The message format arguments. */ typedef DECLCALLBACK(void) FNSUPTRUSTEDERROR(const char *pszWhere, SUPINITOP enmWhat, int rc, const char *pszMsgFmt, va_list va); /** Pointer to FNSUPTRUSTEDERROR. */ typedef FNSUPTRUSTEDERROR *PFNSUPTRUSTEDERROR; /** * Secure main. * * This is used for the set-user-ID-on-execute binaries on unixy systems * and when using the open-vboxdrv-via-root-service setup on Windows. * * This function will perform the integrity checks of the VirtualBox * installation, open the support driver, open the root service (later), * and load the DLL corresponding to \a pszProgName and execute its main * function. * * @returns Return code appropriate for main(). * * @param pszProgName The program name. This will be used to figure out which * DLL/SO/DYLIB to load and execute. * @param fFlags Flags. * @param argc The argument count. * @param argv The argument vector. * @param envp The environment vector. */ DECLHIDDEN(int) SUPR3HardenedMain(const char *pszProgName, uint32_t fFlags, int argc, char **argv, char **envp); /** @name SUPR3SecureMain flags. * @{ */ /** Don't open the device. (Intended for VirtualBox without -startvm.) */ #define SUPSECMAIN_FLAGS_DONT_OPEN_DEV RT_BIT_32(0) /** @} */ /** * Initializes the support library. * Each succesful call to SUPR3Init() must be countered by a * call to SUPR3Term(false). * * @returns VBox status code. * @param ppSession Where to store the session handle. Defaults to NULL. */ SUPR3DECL(int) SUPR3Init(PSUPDRVSESSION *ppSession); /** * Terminates the support library. * * @returns VBox status code. * @param fForced Forced termination. This means to ignore the * init call count and just terminated. */ #ifdef __cplusplus SUPR3DECL(int) SUPR3Term(bool fForced = false); #else SUPR3DECL(int) SUPR3Term(int fForced); #endif /** * Sets the ring-0 VM handle for use with fast IOCtls. * * @returns VBox status code. * @param pVMR0 The ring-0 VM handle. * NIL_RTR0PTR can be used to unset the handle when the * VM is about to be destroyed. */ SUPR3DECL(int) SUPR3SetVMForFastIOCtl(PVMR0 pVMR0); /** * Calls the HC R0 VMM entry point. * See VMMR0Entry() for more details. * * @returns error code specific to uFunction. * @param pVMR0 Pointer to the Ring-0 (Host Context) mapping of the VM structure. * @param idCpu The virtual CPU ID. * @param uOperation Operation to execute. * @param pvArg Argument. */ SUPR3DECL(int) SUPR3CallVMMR0(PVMR0 pVMR0, VMCPUID idCpu, unsigned uOperation, void *pvArg); /** * Variant of SUPR3CallVMMR0, except that this takes the fast ioclt path * regardsless of compile-time defaults. * * @returns VBox status code. * @param pVMR0 The ring-0 VM handle. * @param uOperation The operation; only the SUP_VMMR0_DO_* ones are valid. * @param idCpu The virtual CPU ID. */ SUPR3DECL(int) SUPR3CallVMMR0Fast(PVMR0 pVMR0, unsigned uOperation, VMCPUID idCpu); /** * Calls the HC R0 VMM entry point, in a safer but slower manner than * SUPR3CallVMMR0. When entering using this call the R0 components can call * into the host kernel (i.e. use the SUPR0 and RT APIs). * * See VMMR0Entry() for more details. * * @returns error code specific to uFunction. * @param pVMR0 Pointer to the Ring-0 (Host Context) mapping of the VM structure. * @param idCpu The virtual CPU ID. * @param uOperation Operation to execute. * @param u64Arg Constant argument. * @param pReqHdr Pointer to a request header. Optional. * This will be copied in and out of kernel space. There currently is a size * limit on this, just below 4KB. */ SUPR3DECL(int) SUPR3CallVMMR0Ex(PVMR0 pVMR0, VMCPUID idCpu, unsigned uOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr); /** * Calls a ring-0 service. * * The operation and the request packet is specific to the service. * * @returns error code specific to uFunction. * @param pszService The service name. * @param cchService The length of the service name. * @param uReq The request number. * @param u64Arg Constant argument. * @param pReqHdr Pointer to a request header. Optional. * This will be copied in and out of kernel space. There currently is a size * limit on this, just below 4KB. */ SUPR3DECL(int) SUPR3CallR0Service(const char *pszService, size_t cchService, uint32_t uOperation, uint64_t u64Arg, PSUPR0SERVICEREQHDR pReqHdr); /** Which logger. */ typedef enum SUPLOGGER { SUPLOGGER_DEBUG = 1, SUPLOGGER_RELEASE } SUPLOGGER; /** * Changes the settings of the specified ring-0 logger. * * @returns VBox status code. * @param enmWhich Which logger. * @param pszFlags The flags settings. * @param pszGroups The groups settings. * @param pszDest The destionation specificier. */ SUPR3DECL(int) SUPR3LoggerSettings(SUPLOGGER enmWhich, const char *pszFlags, const char *pszGroups, const char *pszDest); /** * Creates a ring-0 logger instance. * * @returns VBox status code. * @param enmWhich Which logger to create. * @param pszFlags The flags settings. * @param pszGroups The groups settings. * @param pszDest The destionation specificier. */ SUPR3DECL(int) SUPR3LoggerCreate(SUPLOGGER enmWhich, const char *pszFlags, const char *pszGroups, const char *pszDest); /** * Destroys a ring-0 logger instance. * * @returns VBox status code. * @param enmWhich Which logger. */ SUPR3DECL(int) SUPR3LoggerDestroy(SUPLOGGER enmWhich); /** * Queries the paging mode of the host OS. * * @returns The paging mode. */ SUPR3DECL(SUPPAGINGMODE) SUPR3GetPagingMode(void); /** * Allocate zero-filled pages. * * Use this to allocate a number of pages suitable for seeding / locking. * Call SUPR3PageFree() to free the pages once done with them. * * @returns VBox status. * @param cPages Number of pages to allocate. * @param ppvPages Where to store the base pointer to the allocated pages. */ SUPR3DECL(int) SUPR3PageAlloc(size_t cPages, void **ppvPages); /** * Frees pages allocated with SUPR3PageAlloc(). * * @returns VBox status. * @param pvPages Pointer returned by SUPR3PageAlloc(). * @param cPages Number of pages that was allocated. */ SUPR3DECL(int) SUPR3PageFree(void *pvPages, size_t cPages); /** * Allocate non-zeroed, locked, pages with user and, optionally, kernel * mappings. * * Use SUPR3PageFreeEx() to free memory allocated with this function. * * @returns VBox status code. * @param cPages The number of pages to allocate. * @param fFlags Flags, reserved. Must be zero. * @param ppvPages Where to store the address of the user mapping. * @param pR0Ptr Where to store the address of the kernel mapping. * NULL if no kernel mapping is desired. * @param paPages Where to store the physical addresses of each page. * Optional. */ SUPR3DECL(int) SUPR3PageAllocEx(size_t cPages, uint32_t fFlags, void **ppvPages, PRTR0PTR pR0Ptr, PSUPPAGE paPages); /** * Maps a portion of a ring-3 only allocation into kernel space. * * @returns VBox status code. * * @param pvR3 The address SUPR3PageAllocEx return. * @param off Offset to start mapping at. Must be page aligned. * @param cb Number of bytes to map. Must be page aligned. * @param fFlags Flags, must be zero. * @param pR0Ptr Where to store the address on success. * */ SUPR3DECL(int) SUPR3PageMapKernel(void *pvR3, uint32_t off, uint32_t cb, uint32_t fFlags, PRTR0PTR pR0Ptr); /** * Changes the protection of * * @returns VBox status code. * @retval VERR_NOT_SUPPORTED if the OS doesn't allow us to change page level * protection. See also RTR0MemObjProtect. * * @param pvR3 The ring-3 address SUPR3PageAllocEx returned. * @param R0Ptr The ring-0 address SUPR3PageAllocEx returned if it * is desired that the corresponding ring-0 page * mappings should change protection as well. Pass * NIL_RTR0PTR if the ring-0 pages should remain * unaffected. * @param off Offset to start at which to start chagning the page * level protection. Must be page aligned. * @param cb Number of bytes to change. Must be page aligned. * @param fProt The new page level protection, either a combination * of RTMEM_PROT_READ, RTMEM_PROT_WRITE and * RTMEM_PROT_EXEC, or just RTMEM_PROT_NONE. */ SUPR3DECL(int) SUPR3PageProtect(void *pvR3, RTR0PTR R0Ptr, uint32_t off, uint32_t cb, uint32_t fProt); /** * Free pages allocated by SUPR3PageAllocEx. * * @returns VBox status code. * @param pvPages The address of the user mapping. * @param cPages The number of pages. */ SUPR3DECL(int) SUPR3PageFreeEx(void *pvPages, size_t cPages); /** * Allocated memory with page aligned memory with a contiguous and locked physical * memory backing below 4GB. * * @returns Pointer to the allocated memory (virtual address). * *pHCPhys is set to the physical address of the memory. * If ppvR0 isn't NULL, *ppvR0 is set to the ring-0 mapping. * The returned memory must be freed using SUPR3ContFree(). * @returns NULL on failure. * @param cPages Number of pages to allocate. * @param pR0Ptr Where to store the ring-0 mapping of the allocation. (optional) * @param pHCPhys Where to store the physical address of the memory block. * * @remark This 2nd version of this API exists because we're not able to map the * ring-3 mapping executable on WIN64. This is a serious problem in regard to * the world switchers. */ SUPR3DECL(void *) SUPR3ContAlloc(size_t cPages, PRTR0PTR pR0Ptr, PRTHCPHYS pHCPhys); /** * Frees memory allocated with SUPR3ContAlloc(). * * @returns VBox status code. * @param pv Pointer to the memory block which should be freed. * @param cPages Number of pages to be freed. */ SUPR3DECL(int) SUPR3ContFree(void *pv, size_t cPages); /** * Allocated non contiguous physical memory below 4GB. * * The memory isn't zeroed. * * @returns VBox status code. * @returns NULL on failure. * @param cPages Number of pages to allocate. * @param ppvPages Where to store the pointer to the allocated memory. * The pointer stored here on success must be passed to * SUPR3LowFree when the memory should be released. * @param ppvPagesR0 Where to store the ring-0 pointer to the allocated memory. optional. * @param paPages Where to store the physical addresses of the individual pages. */ SUPR3DECL(int) SUPR3LowAlloc(size_t cPages, void **ppvPages, PRTR0PTR ppvPagesR0, PSUPPAGE paPages); /** * Frees memory allocated with SUPR3LowAlloc(). * * @returns VBox status code. * @param pv Pointer to the memory block which should be freed. * @param cPages Number of pages that was allocated. */ SUPR3DECL(int) SUPR3LowFree(void *pv, size_t cPages); /** * Load a module into R0 HC. * * This will verify the file integrity in a similar manner as * SUPR3HardenedVerifyFile before loading it. * * @returns VBox status code. * @param pszFilename The path to the image file. * @param pszModule The module name. Max 32 bytes. * @param ppvImageBase Where to store the image address. */ SUPR3DECL(int) SUPR3LoadModule(const char *pszFilename, const char *pszModule, void **ppvImageBase); /** * Load a module into R0 HC. * * This will verify the file integrity in a similar manner as * SUPR3HardenedVerifyFile before loading it. * * @returns VBox status code. * @param pszFilename The path to the image file. * @param pszModule The module name. Max 32 bytes. * @param pszSrvReqHandler The name of the service request handler entry * point. See FNSUPR0SERVICEREQHANDLER. * @param ppvImageBase Where to store the image address. */ SUPR3DECL(int) SUPR3LoadServiceModule(const char *pszFilename, const char *pszModule, const char *pszSrvReqHandler, void **ppvImageBase); /** * Frees a R0 HC module. * * @returns VBox status code. * @param pszModule The module to free. * @remark This will not actually 'free' the module, there are of course usage counting. */ SUPR3DECL(int) SUPR3FreeModule(void *pvImageBase); /** * Get the address of a symbol in a ring-0 module. * * @returns VBox status code. * @param pszModule The module name. * @param pszSymbol Symbol name. If it's value is less than 64k it's treated like a * ordinal value rather than a string pointer. * @param ppvValue Where to store the symbol value. */ SUPR3DECL(int) SUPR3GetSymbolR0(void *pvImageBase, const char *pszSymbol, void **ppvValue); /** * Load R0 HC VMM code. * * @returns VBox status code. * @deprecated Use SUPR3LoadModule(pszFilename, "VMMR0.r0", &pvImageBase) */ SUPR3DECL(int) SUPR3LoadVMM(const char *pszFilename); /** * Unloads R0 HC VMM code. * * @returns VBox status code. * @deprecated Use SUPR3FreeModule(). */ SUPR3DECL(int) SUPR3UnloadVMM(void); /** * Get the physical address of the GIP. * * @returns VBox status code. * @param pHCPhys Where to store the physical address of the GIP. */ SUPR3DECL(int) SUPR3GipGetPhys(PRTHCPHYS pHCPhys); /** * Verifies the integrity of a file, and optionally opens it. * * The integrity check is for whether the file is suitable for loading into * the hypervisor or VM process. The integrity check may include verifying * the authenticode/elfsign/whatever signature of the file, which can take * a little while. * * @returns VBox status code. On failure it will have printed a LogRel message. * * @param pszFilename The file. * @param pszWhat For the LogRel on failure. * @param phFile Where to store the handle to the opened file. This is optional, pass NULL * if the file should not be opened. */ SUPR3DECL(int) SUPR3HardenedVerifyFile(const char *pszFilename, const char *pszWhat, PRTFILE phFile); /** * Same as RTLdrLoad() but will verify the files it loads (hardened builds). * * Will add dll suffix if missing and try load the file. * * @returns iprt status code. * @param pszFilename Image filename. This must have a path. * @param phLdrMod Where to store the handle to the loaded module. */ SUPR3DECL(int) SUPR3HardenedLdrLoad(const char *pszFilename, PRTLDRMOD phLdrMod); /** * Same as RTLdrLoadAppPriv() but it will verify the files it loads (hardened * builds). * * Will add dll suffix to the file if missing, then look for it in the * architecture dependent application directory. * * @returns iprt status code. * @param pszFilename Image filename. * @param phLdrMod Where to store the handle to the loaded module. */ SUPR3DECL(int) SUPR3HardenedLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod); /** * Check if the host kernel can run in VMX root mode. * * @returns VINF_SUCCESS if supported, error code indicating why if not. */ SUPR3DECL(int) SUPR3QueryVTxSupported(void); /** * Return VT-x/AMD-V capabilities. * * @returns VINF_SUCCESS if supported, error code indicating why if not. * @param pfCaps Pointer to capability dword (out). */ SUPR3DECL(int) SUPR3QueryVTCaps(uint32_t *pfCaps); /** @} */ #endif /* IN_RING3 */ #ifdef IN_RING0 /** @defgroup grp_sup_r0 SUP Host Context Ring-0 API * @ingroup grp_sup * @{ */ /** * Security objectype. */ typedef enum SUPDRVOBJTYPE { /** The usual invalid object. */ SUPDRVOBJTYPE_INVALID = 0, /** A Virtual Machine instance. */ SUPDRVOBJTYPE_VM, /** Internal network. */ SUPDRVOBJTYPE_INTERNAL_NETWORK, /** Internal network interface. */ SUPDRVOBJTYPE_INTERNAL_NETWORK_INTERFACE, /** Single release event semaphore. */ SUPDRVOBJTYPE_SEM_EVENT, /** Multiple release event semaphore. */ SUPDRVOBJTYPE_SEM_EVENT_MULTI, /** The first invalid object type in this end. */ SUPDRVOBJTYPE_END, /** The usual 32-bit type size hack. */ SUPDRVOBJTYPE_32_BIT_HACK = 0x7ffffff } SUPDRVOBJTYPE; /** * Object destructor callback. * This is called for reference counted objectes when the count reaches 0. * * @param pvObj The object pointer. * @param pvUser1 The first user argument. * @param pvUser2 The second user argument. */ typedef DECLCALLBACK(void) FNSUPDRVDESTRUCTOR(void *pvObj, void *pvUser1, void *pvUser2); /** Pointer to a FNSUPDRVDESTRUCTOR(). */ typedef FNSUPDRVDESTRUCTOR *PFNSUPDRVDESTRUCTOR; SUPR0DECL(void *) SUPR0ObjRegister(PSUPDRVSESSION pSession, SUPDRVOBJTYPE enmType, PFNSUPDRVDESTRUCTOR pfnDestructor, void *pvUser1, void *pvUser2); SUPR0DECL(int) SUPR0ObjAddRef(void *pvObj, PSUPDRVSESSION pSession); SUPR0DECL(int) SUPR0ObjAddRefEx(void *pvObj, PSUPDRVSESSION pSession, bool fNoBlocking); SUPR0DECL(int) SUPR0ObjRelease(void *pvObj, PSUPDRVSESSION pSession); SUPR0DECL(int) SUPR0ObjVerifyAccess(void *pvObj, PSUPDRVSESSION pSession, const char *pszObjName); SUPR0DECL(int) SUPR0LockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t cPages, PRTHCPHYS paPages); SUPR0DECL(int) SUPR0UnlockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3); SUPR0DECL(int) SUPR0ContAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS pHCPhys); SUPR0DECL(int) SUPR0ContFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr); SUPR0DECL(int) SUPR0LowAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS paPages); SUPR0DECL(int) SUPR0LowFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr); SUPR0DECL(int) SUPR0MemAlloc(PSUPDRVSESSION pSession, uint32_t cb, PRTR0PTR ppvR0, PRTR3PTR ppvR3); SUPR0DECL(int) SUPR0MemGetPhys(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, PSUPPAGE paPages); SUPR0DECL(int) SUPR0MemFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr); SUPR0DECL(int) SUPR0PageAllocEx(PSUPDRVSESSION pSession, uint32_t cPages, uint32_t fFlags, PRTR3PTR ppvR3, PRTR0PTR ppvR0, PRTHCPHYS paPages); SUPR0DECL(int) SUPR0PageMapKernel(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t offSub, uint32_t cbSub, uint32_t fFlags, PRTR0PTR ppvR0); SUPR0DECL(int) SUPR0PageProtect(PSUPDRVSESSION pSession, RTR3PTR pvR3, RTR0PTR pvR0, uint32_t offSub, uint32_t cbSub, uint32_t fProt); SUPR0DECL(int) SUPR0PageFree(PSUPDRVSESSION pSession, RTR3PTR pvR3); SUPR0DECL(int) SUPR0GipMap(PSUPDRVSESSION pSession, PRTR3PTR ppGipR3, PRTHCPHYS pHCPhysGip); SUPR0DECL(int) SUPR0QueryVTCaps(PSUPDRVSESSION pSession, uint32_t *pfCaps); SUPR0DECL(int) SUPR0GipUnmap(PSUPDRVSESSION pSession); SUPR0DECL(int) SUPR0Printf(const char *pszFormat, ...); SUPR0DECL(SUPPAGINGMODE) SUPR0GetPagingMode(void); SUPR0DECL(int) SUPR0EnableVTx(bool fEnable); /** @name Absolute symbols * Take the address of these, don't try call them. * @{ */ SUPR0DECL(void) SUPR0AbsIs64bit(void); SUPR0DECL(void) SUPR0Abs64bitKernelCS(void); SUPR0DECL(void) SUPR0Abs64bitKernelSS(void); SUPR0DECL(void) SUPR0Abs64bitKernelDS(void); SUPR0DECL(void) SUPR0AbsKernelCS(void); SUPR0DECL(void) SUPR0AbsKernelSS(void); SUPR0DECL(void) SUPR0AbsKernelDS(void); SUPR0DECL(void) SUPR0AbsKernelES(void); SUPR0DECL(void) SUPR0AbsKernelFS(void); SUPR0DECL(void) SUPR0AbsKernelGS(void); /** @} */ /** * Support driver component factory. * * Component factories are registered by drivers that provides services * such as the host network interface filtering and access to the host * TCP/IP stack. * * @remark Module dependencies and making sure that a component doesn't * get unloaded while in use, is the sole responsibility of the * driver/kext/whatever implementing the component. */ typedef struct SUPDRVFACTORY { /** The (unique) name of the component factory. */ char szName[56]; /** * Queries a factory interface. * * The factory interface is specific to each component and will be be * found in the header(s) for the component alongside its UUID. * * @returns Pointer to the factory interfaces on success, NULL on failure. * * @param pSupDrvFactory Pointer to this structure. * @param pSession The SUPDRV session making the query. * @param pszInterfaceUuid The UUID of the factory interface. */ DECLR0CALLBACKMEMBER(void *, pfnQueryFactoryInterface,(struct SUPDRVFACTORY const *pSupDrvFactory, PSUPDRVSESSION pSession, const char *pszInterfaceUuid)); } SUPDRVFACTORY; /** Pointer to a support driver factory. */ typedef SUPDRVFACTORY *PSUPDRVFACTORY; /** Pointer to a const support driver factory. */ typedef SUPDRVFACTORY const *PCSUPDRVFACTORY; SUPR0DECL(int) SUPR0ComponentRegisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory); SUPR0DECL(int) SUPR0ComponentDeregisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory); SUPR0DECL(int) SUPR0ComponentQueryFactory(PSUPDRVSESSION pSession, const char *pszName, const char *pszInterfaceUuid, void **ppvFactoryIf); /** * Service request callback function. * * @returns VBox status code. * @param pSession The caller's session. * @param u64Arg 64-bit integer argument. * @param pReqHdr The request header. Input / Output. Optional. */ typedef DECLCALLBACK(int) FNSUPR0SERVICEREQHANDLER(PSUPDRVSESSION pSession, uint32_t uOperation, uint64_t u64Arg, PSUPR0SERVICEREQHDR pReqHdr); /** Pointer to a FNR0SERVICEREQHANDLER(). */ typedef R0PTRTYPE(FNSUPR0SERVICEREQHANDLER *) PFNSUPR0SERVICEREQHANDLER; /** @defgroup grp_sup_r0_idc The IDC Interface * @ingroup grp_sup_r0 * @{ */ /** The current SUPDRV IDC version. * This follows the usual high word / low word rules, i.e. high word is the * major number and it signifies incompatible interface changes. */ #define SUPDRV_IDC_VERSION UINT32_C(0x00010000) /** * Inter-Driver Communcation Handle. */ typedef union SUPDRVIDCHANDLE { /** Padding for opaque usage. * Must be greater or equal in size than the private struct. */ void *apvPadding[4]; #ifdef SUPDRVIDCHANDLEPRIVATE_DECLARED /** The private view. */ struct SUPDRVIDCHANDLEPRIVATE s; #endif } SUPDRVIDCHANDLE; /** Pointer to a handle. */ typedef SUPDRVIDCHANDLE *PSUPDRVIDCHANDLE; SUPR0DECL(int) SUPR0IdcOpen(PSUPDRVIDCHANDLE pHandle, uint32_t uReqVersion, uint32_t uMinVersion, uint32_t *puSessionVersion, uint32_t *puDriverVersion, uint32_t *puDriverRevision); SUPR0DECL(int) SUPR0IdcCall(PSUPDRVIDCHANDLE pHandle, uint32_t iReq, void *pvReq, uint32_t cbReq); SUPR0DECL(int) SUPR0IdcClose(PSUPDRVIDCHANDLE pHandle); SUPR0DECL(PSUPDRVSESSION) SUPR0IdcGetSession(PSUPDRVIDCHANDLE pHandle); SUPR0DECL(int) SUPR0IdcComponentRegisterFactory(PSUPDRVIDCHANDLE pHandle, PCSUPDRVFACTORY pFactory); SUPR0DECL(int) SUPR0IdcComponentDeregisterFactory(PSUPDRVIDCHANDLE pHandle, PCSUPDRVFACTORY pFactory); /** @} */ /** @} */ #endif /** @} */ RT_C_DECLS_END #endif