/* * * Coda: an Experimental Distributed File System * Release 3.1 * * Copyright (c) 1987-1998 Carnegie Mellon University * All Rights Reserved * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation, and * that credit is given to Carnegie Mellon University in all documents * and publicity pertaining to direct or indirect use of this code or its * derivatives. * * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS, * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF * ANY DERIVATIVE WORK. * * Carnegie Mellon encourages users of this software to return any * improvements or extensions that they make, and to grant Carnegie * Mellon the rights to redistribute these changes without encumbrance. * * @(#) src/sys/coda/coda_fbsd.cr,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $ * $Id: coda_fbsd.c,v 1.8 1998/11/03 08:55:05 peter Exp $ * */ #ifdef VFS_LKM #define NVCODA 4 #else #include "vcoda.h" #include "opt_devfs.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DEVFS #include static void *cfs_devfs_token[NVCODA]; static void *coda_devfs_token[NVCODA]; #endif /* From: "Jordan K. Hubbard" Subject: Re: New 3.0 SNAPshot CDROM about ready for production.. To: "Robert.V.Baron" Date: Fri, 20 Feb 1998 15:57:01 -0800 > Also I need a character device major number. (and might want to reserve > a block of 10 syscalls.) Just one char device number? No block devices? Very well, cdev 93 is yours! */ #define VC_DEV_NO 93 static struct cdevsw codadevsw = { vc_nb_open, vc_nb_close, vc_nb_read, vc_nb_write, /*93*/ vc_nb_ioctl, nostop, nullreset, nodevtotty, vc_nb_poll, nommap, NULL, "Coda", NULL, -1 }; int vcdebug = 1; #define VCDEBUG if (vcdebug) printf #if !defined(VFS_LKM) || defined(VFS_KLD) static int codadev_modevent(module_t mod, int type, void *data) { dev_t dev; #ifdef DEVFS int i; #endif static struct cdevsw *oldcdevsw; switch (type) { case MOD_LOAD: dev = makedev(VC_DEV_NO, 0); cdevsw_add(&dev,&codadevsw, &oldcdevsw); #ifdef DEVFS /* tmp */ #undef NVCODA #define NVCODA 1 for (i = 0; i < NVCODA; i++) { cfs_devfs_token[i] = devfs_add_devswf(&codadevsw, i, DV_CHR, UID_ROOT, GID_WHEEL, 0666, "cfs%d", i); coda_devfs_token[i] = devfs_add_devswf(&codadevsw, i, DV_CHR, UID_ROOT, GID_WHEEL, 0666, "coda%d", i); } #endif break; case MOD_UNLOAD: #ifdef DEVFS for (i = 0; i < NVCODA; i++) { devfs_remove_dev(cfs_devfs_token[i]); devfs_remove_dev(coda_devfs_token[i]); } #endif cdevsw_add(&dev, oldcdevsw, NULL); break; default: break; } return 0; } static moduledata_t codadev_mod = { "codadev", codadev_modevent, NULL }; DECLARE_MODULE(codadev, codadev_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+VC_DEV_NO); #endif int coda_fbsd_getpages(v) void *v; { struct vop_getpages_args *ap = v; int ret = 0; #if 1 /* ??? a_offset */ ret = vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, ap->a_reqpage); return ret; #else { struct vnode *vp = ap->a_vp; struct cnode *cp = VTOC(vp); struct vnode *cfvp = cp->c_ovp; int opened_internally = 0; struct ucred *cred = (struct ucred *) 0; struct proc *p = curproc; int error = 0; if (IS_CTL_VP(vp)) { return(EINVAL); } /* Redirect the request to UFS. */ if (cfvp == NULL) { opened_internally = 1; error = VOP_OPEN(vp, FREAD, cred, p); printf("coda_getp: Internally Opening %p\n", vp); if (error) { printf("coda_getpage: VOP_OPEN on container failed %d\n", error); return (error); } if (vp->v_type == VREG) { error = vfs_object_create(vp, p, cred, 1); if (error != 0) { printf("coda_getpage: vfs_object_create() returns %d\n", error); vput(vp); return(error); } } cfvp = cp->c_ovp; } else { printf("coda_getp: has container %p\n", cfvp); } printf("coda_fbsd_getpages: using container "); /* error = vnode_pager_generic_getpages(cfvp, ap->a_m, ap->a_count, ap->a_reqpage); */ error = VOP_GETPAGES(cfvp, ap->a_m, ap->a_count, ap->a_reqpage, ap->a_offset); printf("error = %d\n", error); /* Do an internal close if necessary. */ if (opened_internally) { (void)VOP_CLOSE(vp, FREAD, cred, p); } return(error); } #endif } int coda_fbsd_putpages(v) void *v; { struct vop_putpages_args *ap = v; /*??? a_offset */ return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, ap->a_sync, ap->a_rtvals); } #if defined(VFS_LKM) && !defined(VFS_KLD) #include #include void vcattach __P((void)); static dev_t codadev; void vcattach(void) { if (0 == (codadev = makedev(VC_DEV_NO, 0))) VCDEBUG("makedev returned null\n"); else VCDEBUG("makedev OK.\n"); cdevsw_add(&codadev, &codadevsw, NULL); VCDEBUG("coda: codadevsw entry installed at %d.\n", major(codadev)); } extern struct vfsops coda_vfsops; static struct vfsconf _fs_vfsconf = { &coda_vfsops, "coda", -1, 0, 0 }; extern struct linker_set coda_modvnops ; static struct lkm_vfs coda_mod_vfs = { LM_VFS, LKM_VERSION, "coda", 0, &coda_modvnops, &_fs_vfsconf }; static struct lkm_dev coda_mod_dev = { LM_DEV, LKM_VERSION, "codadev", VC_DEV_NO, LM_DT_CHAR, (void *) &codadevsw}; int coda_mod(struct lkm_table *, int, int); int coda_mod(struct lkm_table *lkmtp, int cmd, int ver) { int error = 0; if (ver != LKM_VERSION) return EINVAL; switch (cmd) { case LKM_E_LOAD: lkmtp->private.lkm_any = (struct lkm_any *) &coda_mod_dev; error = lkmdispatch(lkmtp, cmd); if (error) break; lkmtp->private.lkm_any = (struct lkm_any *) &coda_mod_vfs ; error = lkmdispatch(lkmtp, cmd); break; case LKM_E_UNLOAD: lkmtp->private.lkm_any = (struct lkm_any *) &coda_mod_vfs ; error = lkmdispatch(lkmtp, cmd); if (error) break; lkmtp->private.lkm_any = (struct lkm_any *) &coda_mod_dev; error = lkmdispatch(lkmtp, cmd); break; case LKM_E_STAT: error = lkmdispatch(lkmtp, cmd); break; } return error; } #endif