SUPDrv-freebsd.c revision 0a769a6be37f526faeabe88f77422ee6291afa37
8e2911e5309f5dff976cc7ac17d832d4ee2cdca3vboxsync * VBoxDrv - FreeBSD specifics.
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * Permission is hereby granted, free of charge, to any person
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * obtaining a copy of this software and associated documentation
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * files (the "Software"), to deal in the Software without
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * restriction, including without limitation the rights to use,
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * copy, modify, merge, publish, distribute, sublicense, and/or sell
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * copies of the Software, and to permit persons to whom the
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * Software is furnished to do so, subject to the following
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * conditions:
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * The above copyright notice and this permission notice shall be
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * included in all copies or substantial portions of the Software.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
cba6719bd64ec749967bbe931230452664109857vboxsync * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * OTHER DEALINGS IN THE SOFTWARE.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync/*******************************************************************************
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync* Header Files *
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync*******************************************************************************/
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync/* Deal with conflicts first. */
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync/*******************************************************************************
dc1ef3adbbc24e348697c7f7d4b4df5cf4f64c32vboxsync* Internal Functions *
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync*******************************************************************************/
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsyncstatic int VBoxDrvFreeBSDModuleEvent(struct module *pMod, int enmEventType, void *pvArg);
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsyncstatic int VBoxDrvFreeBSDLoad(void);
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsyncstatic int VBoxDrvFreeBSDUnload(void);
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync/*******************************************************************************
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync* Global Variables *
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync*******************************************************************************/
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * Module info structure used by the kernel.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync/** Declare the module as a pseudo device. */
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsyncDECLARE_MODULE(vboxdrv, g_VBoxDrvFreeBSDModule, SI_SUB_PSEUDO, SI_ORDER_ANY);
b2b8d2ecd8d9bafa7d53919432c46e86fb377fa7vboxsync * The /dev/vboxdrv character device entry points.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync/** The make_dev result. */
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync/** The device extention. */
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync/** Spinlock protecting g_apSessionHashTab. */
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync/** Hash table */
da3503c04ce76e653401396fe2795a9bc2427a1dvboxsync/** Calculates the index into g_apSessionHashTab.*/
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync#define SESSION_HASH(sfn) ((sfn) % RT_ELEMENTS(g_apSessionHashTab))
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * Module event handler.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * @param pMod The module structure.
cba6719bd64ec749967bbe931230452664109857vboxsync * @param enmEventType The event type (modeventtype_t).
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * @param pvArg Module argument. NULL.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * @return 0 on success, errno.h status code on failure.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsyncstatic int VBoxDrvFreeBSDModuleEvent(struct module *pMod, int enmEventType, void *pvArg)
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsyncstatic int VBoxDrvFreeBSDLoad(void)
cba6719bd64ec749967bbe931230452664109857vboxsync * Initialize the runtime.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * Initialize the device extension.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * Initialize the session hash table.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync * Create our device node.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync /** @todo find a way to fix this 0666 permission issue. Perhaps by defining some vboxusers group with a fixed gid? */
cba6719bd64ec749967bbe931230452664109857vboxsync g_pVBoxDrvFreeBSDChrDev = make_dev(&g_VBoxDrvFreeBSDChrDevSW,
cba6719bd64ec749967bbe931230452664109857vboxsync "vboxdrv");
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync dprintf(("VBoxDrvFreeBSDLoad: returns successfully\n"));
dc1ef3adbbc24e348697c7f7d4b4df5cf4f64c32vboxsync printf("vboxdrv: RTSpinlockCreate failed, rc=%d\n", rc);
8bed792bc65abd39393889351f22263ce6c289bfvboxsync printf("vboxdrv: supdrvInitDevExt failed, rc=%d\n", rc);
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsyncstatic int VBoxDrvFreeBSDUnload(void)
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsync /** @todo verify that FreeBSD does reference counting. */
ad77e3ec3cde24263bc7537575f5cae442bee3b1vboxsync * Reserve what we did in VBoxDrvFreeBSDInit.
801238b286a80a5dd67ba56a1f26c0bc98a2a1eavboxsyncstatic int VBoxDrvFreeBSDOpen(struct cdev *dev, int oflags, struct thread *td, int fdidx)
cba6719bd64ec749967bbe931230452664109857vboxsyncstatic int VBoxDrvFreeBSDClose(struct cdev *dev, int fflag, int devtype, struct thread *td)
cba6719bd64ec749967bbe931230452664109857vboxsyncstatic int VBoxDrvFreeBSDIOCtl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
switch (rc)
return EPERM;
bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc)
int cch;
return cch;