xref: /illumos-gate/usr/src/uts/common/fs/proc/prvfsops.c (revision 5d9d9091)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
55a59a8b3Srsb  * Common Development and Distribution License (the "License").
65a59a8b3Srsb  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217c478bd9Sstevel@tonic-gate /*
220fbb751dSJohn Levon  * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
237c478bd9Sstevel@tonic-gate  */
247c478bd9Sstevel@tonic-gate 
257c478bd9Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
26e14d4b22SToomas Soome /*	  All Rights Reserved	*/
277c478bd9Sstevel@tonic-gate 
287c478bd9Sstevel@tonic-gate 
297c478bd9Sstevel@tonic-gate #include <sys/types.h>
307c478bd9Sstevel@tonic-gate #include <sys/param.h>
317c478bd9Sstevel@tonic-gate #include <sys/cmn_err.h>
327c478bd9Sstevel@tonic-gate #include <sys/cred.h>
337c478bd9Sstevel@tonic-gate #include <sys/debug.h>
347c478bd9Sstevel@tonic-gate #include <sys/errno.h>
357c478bd9Sstevel@tonic-gate #include <sys/proc.h>
367c478bd9Sstevel@tonic-gate #include <sys/procfs.h>
377c478bd9Sstevel@tonic-gate #include <sys/stat.h>
387c478bd9Sstevel@tonic-gate #include <sys/statvfs.h>
397c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h>
407c478bd9Sstevel@tonic-gate #include <sys/systm.h>
417c478bd9Sstevel@tonic-gate #include <sys/zone.h>
427c478bd9Sstevel@tonic-gate #include <sys/var.h>
437c478bd9Sstevel@tonic-gate #include <sys/vfs.h>
44aa59c4cbSrsb #include <sys/vfs_opreg.h>
457c478bd9Sstevel@tonic-gate #include <sys/vnode.h>
467c478bd9Sstevel@tonic-gate #include <sys/mode.h>
477c478bd9Sstevel@tonic-gate #include <sys/signal.h>
487c478bd9Sstevel@tonic-gate #include <sys/user.h>
497c478bd9Sstevel@tonic-gate #include <sys/mount.h>
507c478bd9Sstevel@tonic-gate #include <sys/bitmap.h>
517c478bd9Sstevel@tonic-gate #include <sys/kmem.h>
527c478bd9Sstevel@tonic-gate #include <sys/policy.h>
537c478bd9Sstevel@tonic-gate #include <fs/fs_subr.h>
547c478bd9Sstevel@tonic-gate #include <fs/proc/prdata.h>
557c478bd9Sstevel@tonic-gate 
567c478bd9Sstevel@tonic-gate /*
577c478bd9Sstevel@tonic-gate  * This is the loadable module wrapper.
587c478bd9Sstevel@tonic-gate  */
597c478bd9Sstevel@tonic-gate #include <sys/modctl.h>
607c478bd9Sstevel@tonic-gate 
617c478bd9Sstevel@tonic-gate static int prinit();
627c478bd9Sstevel@tonic-gate 
637c478bd9Sstevel@tonic-gate static mntopts_t proc_mntopts = {
64e14d4b22SToomas Soome 	.mo_count = 0,
65e14d4b22SToomas Soome 	.mo_list = NULL
667c478bd9Sstevel@tonic-gate };
677c478bd9Sstevel@tonic-gate 
687c478bd9Sstevel@tonic-gate static vfsdef_t vfw = {
697c478bd9Sstevel@tonic-gate 	VFSDEF_VERSION,
707c478bd9Sstevel@tonic-gate 	"proc",
717c478bd9Sstevel@tonic-gate 	prinit,
720fbb751dSJohn Levon 	VSW_HASPROTO|VSW_STATS|VSW_XID|VSW_ZMOUNT,
737c478bd9Sstevel@tonic-gate 	&proc_mntopts
747c478bd9Sstevel@tonic-gate };
757c478bd9Sstevel@tonic-gate 
767c478bd9Sstevel@tonic-gate /*
777c478bd9Sstevel@tonic-gate  * Module linkage information for the kernel.
787c478bd9Sstevel@tonic-gate  */
797c478bd9Sstevel@tonic-gate extern struct mod_ops mod_fsops;
807c478bd9Sstevel@tonic-gate 
817c478bd9Sstevel@tonic-gate static struct modlfs modlfs = {
827c478bd9Sstevel@tonic-gate 	&mod_fsops, "filesystem for proc", &vfw
837c478bd9Sstevel@tonic-gate };
847c478bd9Sstevel@tonic-gate 
857c478bd9Sstevel@tonic-gate static struct modlinkage modlinkage = {
867c478bd9Sstevel@tonic-gate 	MODREV_1, (void *)&modlfs, NULL
877c478bd9Sstevel@tonic-gate };
887c478bd9Sstevel@tonic-gate 
897c478bd9Sstevel@tonic-gate int
_init(void)907c478bd9Sstevel@tonic-gate _init(void)
917c478bd9Sstevel@tonic-gate {
927c478bd9Sstevel@tonic-gate 	return (mod_install(&modlinkage));
937c478bd9Sstevel@tonic-gate }
947c478bd9Sstevel@tonic-gate 
957c478bd9Sstevel@tonic-gate int
_info(struct modinfo * modinfop)967c478bd9Sstevel@tonic-gate _info(struct modinfo *modinfop)
977c478bd9Sstevel@tonic-gate {
987c478bd9Sstevel@tonic-gate 	return (mod_info(&modlinkage, modinfop));
997c478bd9Sstevel@tonic-gate }
1007c478bd9Sstevel@tonic-gate 
1017c478bd9Sstevel@tonic-gate /*
1027c478bd9Sstevel@tonic-gate  * N.B.
1037c478bd9Sstevel@tonic-gate  * No _fini routine. The module cannot be unloaded once loaded.
104*5d9d9091SRichard Lowe  * The NO_UNLOAD_STUB in modstubs.S must change if this module
1057c478bd9Sstevel@tonic-gate  * is ever modified to become unloadable.
1067c478bd9Sstevel@tonic-gate  */
1077c478bd9Sstevel@tonic-gate 
1087c478bd9Sstevel@tonic-gate int		nproc_highbit;		/* highbit(v.v_nproc) */
1097c478bd9Sstevel@tonic-gate 
1107c478bd9Sstevel@tonic-gate static int	procfstype;
1117c478bd9Sstevel@tonic-gate static major_t	procfs_major;
1127c478bd9Sstevel@tonic-gate static minor_t	procfs_minor;
1137c478bd9Sstevel@tonic-gate static kmutex_t	procfs_minor_lock;
1147c478bd9Sstevel@tonic-gate 
1157c478bd9Sstevel@tonic-gate static kmutex_t	pr_mount_lock;
1167c478bd9Sstevel@tonic-gate 
1177c478bd9Sstevel@tonic-gate /*
1187c478bd9Sstevel@tonic-gate  * /proc VFS operations vector.
1197c478bd9Sstevel@tonic-gate  */
1207c478bd9Sstevel@tonic-gate static int	prmount(), prunmount(), prroot(), prstatvfs();
1217c478bd9Sstevel@tonic-gate 
1227c478bd9Sstevel@tonic-gate static void
prinitrootnode(prnode_t * pnp,vfs_t * vfsp)1237c478bd9Sstevel@tonic-gate prinitrootnode(prnode_t *pnp, vfs_t *vfsp)
1247c478bd9Sstevel@tonic-gate {
1257c478bd9Sstevel@tonic-gate 	struct vnode *vp;
1267c478bd9Sstevel@tonic-gate 
1277c478bd9Sstevel@tonic-gate 	bzero((caddr_t)pnp, sizeof (*pnp));
1287c478bd9Sstevel@tonic-gate 	pnp->pr_vnode = vp = vn_alloc(KM_SLEEP);
1297c478bd9Sstevel@tonic-gate 
1307c478bd9Sstevel@tonic-gate 	mutex_init(&pnp->pr_mutex, NULL, MUTEX_DEFAULT, NULL);
1317c478bd9Sstevel@tonic-gate 	vp->v_flag = VROOT|VNOCACHE|VNOMAP|VNOSWAP|VNOMOUNT;
1327c478bd9Sstevel@tonic-gate 	VN_SET_VFS_TYPE_DEV(vp, vfsp, VDIR, 0);
1337c478bd9Sstevel@tonic-gate 	vn_setops(vp, prvnodeops);
1347c478bd9Sstevel@tonic-gate 	vp->v_data = (caddr_t)pnp;
1357c478bd9Sstevel@tonic-gate 	pnp->pr_type = PR_PROCDIR;
1367c478bd9Sstevel@tonic-gate 	pnp->pr_mode = 0555;	/* read-search by everyone */
1377c478bd9Sstevel@tonic-gate 	vn_exists(vp);
1387c478bd9Sstevel@tonic-gate }
1397c478bd9Sstevel@tonic-gate 
1407c478bd9Sstevel@tonic-gate static int
prinit(int fstype,char * name)1417c478bd9Sstevel@tonic-gate prinit(int fstype, char *name)
1427c478bd9Sstevel@tonic-gate {
1437c478bd9Sstevel@tonic-gate 	static const fs_operation_def_t pr_vfsops_template[] = {
144aa59c4cbSrsb 		VFSNAME_MOUNT,		{ .vfs_mount = prmount },
145aa59c4cbSrsb 		VFSNAME_UNMOUNT,	{ .vfs_unmount = prunmount },
146aa59c4cbSrsb 		VFSNAME_ROOT,		{ .vfs_root = prroot },
147aa59c4cbSrsb 		VFSNAME_STATVFS,	{ .vfs_statvfs = prstatvfs },
148aa59c4cbSrsb 		NULL,			NULL
1497c478bd9Sstevel@tonic-gate 	};
1507c478bd9Sstevel@tonic-gate 	extern const fs_operation_def_t pr_vnodeops_template[];
1517c478bd9Sstevel@tonic-gate 	int error;
1527c478bd9Sstevel@tonic-gate 
1537c478bd9Sstevel@tonic-gate 	nproc_highbit = highbit(v.v_proc);
1547c478bd9Sstevel@tonic-gate 	procfstype = fstype;
1557c478bd9Sstevel@tonic-gate 	ASSERT(procfstype != 0);
1567c478bd9Sstevel@tonic-gate 	/*
1577c478bd9Sstevel@tonic-gate 	 * Associate VFS ops vector with this fstype.
1587c478bd9Sstevel@tonic-gate 	 */
1597c478bd9Sstevel@tonic-gate 	error = vfs_setfsops(fstype, pr_vfsops_template, NULL);
1607c478bd9Sstevel@tonic-gate 	if (error != 0) {
1617c478bd9Sstevel@tonic-gate 		cmn_err(CE_WARN, "prinit: bad vfs ops template");
1627c478bd9Sstevel@tonic-gate 		return (error);
1637c478bd9Sstevel@tonic-gate 	}
1647c478bd9Sstevel@tonic-gate 
1657c478bd9Sstevel@tonic-gate 	/*
1667c478bd9Sstevel@tonic-gate 	 * Set up vnode ops vector too.
1677c478bd9Sstevel@tonic-gate 	 */
1687c478bd9Sstevel@tonic-gate 
1697c478bd9Sstevel@tonic-gate 	error = vn_make_ops(name, pr_vnodeops_template, &prvnodeops);
1707c478bd9Sstevel@tonic-gate 	if (error != 0) {
1717c478bd9Sstevel@tonic-gate 		(void) vfs_freevfsops_by_type(fstype);
1727c478bd9Sstevel@tonic-gate 		cmn_err(CE_WARN, "prinit: bad vnode ops template");
1737c478bd9Sstevel@tonic-gate 		return (error);
1747c478bd9Sstevel@tonic-gate 	}
1757c478bd9Sstevel@tonic-gate 
1767c478bd9Sstevel@tonic-gate 	/*
1777c478bd9Sstevel@tonic-gate 	 * Assign a unique "device" number (used by stat(2)).
1787c478bd9Sstevel@tonic-gate 	 */
1797c478bd9Sstevel@tonic-gate 	if ((procfs_major = getudev()) == (major_t)-1) {
1807c478bd9Sstevel@tonic-gate 		cmn_err(CE_WARN, "prinit: can't get unique device number");
1817c478bd9Sstevel@tonic-gate 		procfs_major = 0;
1827c478bd9Sstevel@tonic-gate 	}
1837c478bd9Sstevel@tonic-gate 	mutex_init(&pr_mount_lock, NULL, MUTEX_DEFAULT, NULL);
1847c478bd9Sstevel@tonic-gate 	mutex_init(&procfs_minor_lock, NULL, MUTEX_DEFAULT, NULL);
1857c478bd9Sstevel@tonic-gate 
1867c478bd9Sstevel@tonic-gate 	return (0);
1877c478bd9Sstevel@tonic-gate }
1887c478bd9Sstevel@tonic-gate 
1897c478bd9Sstevel@tonic-gate /* ARGSUSED */
1907c478bd9Sstevel@tonic-gate static int
prmount(struct vfs * vfsp,struct vnode * mvp,struct mounta * uap,struct cred * cr)1917c478bd9Sstevel@tonic-gate prmount(struct vfs *vfsp, struct vnode *mvp,
192e14d4b22SToomas Soome     struct mounta *uap, struct cred *cr)
1937c478bd9Sstevel@tonic-gate {
1947c478bd9Sstevel@tonic-gate 	prnode_t *pnp;
1957c478bd9Sstevel@tonic-gate 	zone_t *zone = curproc->p_zone;
1967c478bd9Sstevel@tonic-gate 
1977c478bd9Sstevel@tonic-gate 	if (secpolicy_fs_mount(cr, mvp, vfsp) != 0)
1987c478bd9Sstevel@tonic-gate 		return (EPERM);
1997c478bd9Sstevel@tonic-gate 
2007c478bd9Sstevel@tonic-gate 	if (mvp->v_type != VDIR)
2017c478bd9Sstevel@tonic-gate 		return (ENOTDIR);
2027c478bd9Sstevel@tonic-gate 
2037c478bd9Sstevel@tonic-gate 	if (zone == global_zone) {
2047c478bd9Sstevel@tonic-gate 		zone_t *mntzone;
2057c478bd9Sstevel@tonic-gate 
2067c478bd9Sstevel@tonic-gate 		mntzone = zone_find_by_path(refstr_value(vfsp->vfs_mntpt));
2077c478bd9Sstevel@tonic-gate 		zone_rele(mntzone);
2087c478bd9Sstevel@tonic-gate 		if (zone != mntzone)
2097c478bd9Sstevel@tonic-gate 			return (EBUSY);
2107c478bd9Sstevel@tonic-gate 	}
2117c478bd9Sstevel@tonic-gate 	/*
2127c478bd9Sstevel@tonic-gate 	 * Having the resource be anything but "proc" doesn't make sense
2137c478bd9Sstevel@tonic-gate 	 */
214d7de0ceaSRobert Harris 	vfs_setresource(vfsp, "proc", 0);
2157c478bd9Sstevel@tonic-gate 
2167c478bd9Sstevel@tonic-gate 	pnp = kmem_alloc(sizeof (*pnp), KM_SLEEP);
2177c478bd9Sstevel@tonic-gate 	mutex_enter(&pr_mount_lock);
2187c478bd9Sstevel@tonic-gate 
2197c478bd9Sstevel@tonic-gate 	mutex_enter(&mvp->v_lock);
2207c478bd9Sstevel@tonic-gate 	if ((uap->flags & MS_OVERLAY) == 0 &&
2217c478bd9Sstevel@tonic-gate 	    (mvp->v_count > 1 || (mvp->v_flag & VROOT))) {
2227c478bd9Sstevel@tonic-gate 		mutex_exit(&mvp->v_lock);
2237c478bd9Sstevel@tonic-gate 		mutex_exit(&pr_mount_lock);
2247c478bd9Sstevel@tonic-gate 		kmem_free(pnp, sizeof (*pnp));
2257c478bd9Sstevel@tonic-gate 		return (EBUSY);
2267c478bd9Sstevel@tonic-gate 	}
2277c478bd9Sstevel@tonic-gate 	mutex_exit(&mvp->v_lock);
2287c478bd9Sstevel@tonic-gate 
2297c478bd9Sstevel@tonic-gate 	prinitrootnode(pnp, vfsp);
2307c478bd9Sstevel@tonic-gate 	vfsp->vfs_fstype = procfstype;
2317c478bd9Sstevel@tonic-gate 	vfsp->vfs_data = (caddr_t)pnp;
2327c478bd9Sstevel@tonic-gate 	vfsp->vfs_bsize = DEV_BSIZE;
2337c478bd9Sstevel@tonic-gate 	/*
2347c478bd9Sstevel@tonic-gate 	 * find an available minor device number for this mount
2357c478bd9Sstevel@tonic-gate 	 */
2367c478bd9Sstevel@tonic-gate 	mutex_enter(&procfs_minor_lock);
2377c478bd9Sstevel@tonic-gate 	do {
2387c478bd9Sstevel@tonic-gate 		vfsp->vfs_dev = makedevice(procfs_major, procfs_minor);
2397c478bd9Sstevel@tonic-gate 		procfs_minor = (procfs_minor + 1) & L_MAXMIN32;
2407c478bd9Sstevel@tonic-gate 	} while (vfs_devismounted(vfsp->vfs_dev));
2417c478bd9Sstevel@tonic-gate 	mutex_exit(&procfs_minor_lock);
2427c478bd9Sstevel@tonic-gate 	vfs_make_fsid(&vfsp->vfs_fsid, vfsp->vfs_dev, procfstype);
2437c478bd9Sstevel@tonic-gate 
2447c478bd9Sstevel@tonic-gate 	mutex_exit(&pr_mount_lock);
2457c478bd9Sstevel@tonic-gate 	return (0);
2467c478bd9Sstevel@tonic-gate }
2477c478bd9Sstevel@tonic-gate 
2487c478bd9Sstevel@tonic-gate /* ARGSUSED */
2497c478bd9Sstevel@tonic-gate static int
prunmount(struct vfs * vfsp,int flag,struct cred * cr)2507c478bd9Sstevel@tonic-gate prunmount(struct vfs *vfsp, int flag, struct cred *cr)
2517c478bd9Sstevel@tonic-gate {
2527c478bd9Sstevel@tonic-gate 	prnode_t *pnp = (prnode_t *)vfsp->vfs_data;
2537c478bd9Sstevel@tonic-gate 	vnode_t *vp = PTOV(pnp);
2547c478bd9Sstevel@tonic-gate 
2557c478bd9Sstevel@tonic-gate 	mutex_enter(&pr_mount_lock);
2567c478bd9Sstevel@tonic-gate 	if (secpolicy_fs_unmount(cr, vfsp) != 0) {
2577c478bd9Sstevel@tonic-gate 		mutex_exit(&pr_mount_lock);
2587c478bd9Sstevel@tonic-gate 		return (EPERM);
2597c478bd9Sstevel@tonic-gate 	}
2607c478bd9Sstevel@tonic-gate 
2617c478bd9Sstevel@tonic-gate 	/*
2627c478bd9Sstevel@tonic-gate 	 * forced unmount is not supported by this file system
2637c478bd9Sstevel@tonic-gate 	 * and thus, ENOTSUP, is being returned.
2647c478bd9Sstevel@tonic-gate 	 */
2657c478bd9Sstevel@tonic-gate 	if (flag & MS_FORCE) {
2667c478bd9Sstevel@tonic-gate 		mutex_exit(&pr_mount_lock);
2677c478bd9Sstevel@tonic-gate 		return (ENOTSUP);
2687c478bd9Sstevel@tonic-gate 	}
2697c478bd9Sstevel@tonic-gate 
2707c478bd9Sstevel@tonic-gate 	/*
2717c478bd9Sstevel@tonic-gate 	 * Ensure that no /proc vnodes are in use on this mount point.
2727c478bd9Sstevel@tonic-gate 	 */
2737c478bd9Sstevel@tonic-gate 	mutex_enter(&vp->v_lock);
2747c478bd9Sstevel@tonic-gate 	if (vp->v_count > 1) {
2757c478bd9Sstevel@tonic-gate 		mutex_exit(&vp->v_lock);
2767c478bd9Sstevel@tonic-gate 		mutex_exit(&pr_mount_lock);
2777c478bd9Sstevel@tonic-gate 		return (EBUSY);
2787c478bd9Sstevel@tonic-gate 	}
2797c478bd9Sstevel@tonic-gate 
2807c478bd9Sstevel@tonic-gate 	mutex_exit(&vp->v_lock);
2817c478bd9Sstevel@tonic-gate 	mutex_exit(&pr_mount_lock);
2827c478bd9Sstevel@tonic-gate 	vn_invalid(vp);
2837c478bd9Sstevel@tonic-gate 	vn_free(vp);
2847c478bd9Sstevel@tonic-gate 	kmem_free(pnp, sizeof (*pnp));
2857c478bd9Sstevel@tonic-gate 	return (0);
2867c478bd9Sstevel@tonic-gate }
2877c478bd9Sstevel@tonic-gate 
2887c478bd9Sstevel@tonic-gate /* ARGSUSED */
2897c478bd9Sstevel@tonic-gate static int
prroot(struct vfs * vfsp,struct vnode ** vpp)2907c478bd9Sstevel@tonic-gate prroot(struct vfs *vfsp, struct vnode **vpp)
2917c478bd9Sstevel@tonic-gate {
2927c478bd9Sstevel@tonic-gate 	vnode_t *vp = PTOV((prnode_t *)vfsp->vfs_data);
2937c478bd9Sstevel@tonic-gate 
2947c478bd9Sstevel@tonic-gate 	VN_HOLD(vp);
2957c478bd9Sstevel@tonic-gate 	*vpp = vp;
2967c478bd9Sstevel@tonic-gate 	return (0);
2977c478bd9Sstevel@tonic-gate }
2987c478bd9Sstevel@tonic-gate 
2997c478bd9Sstevel@tonic-gate static int
prstatvfs(struct vfs * vfsp,struct statvfs64 * sp)3007c478bd9Sstevel@tonic-gate prstatvfs(struct vfs *vfsp, struct statvfs64 *sp)
3017c478bd9Sstevel@tonic-gate {
3027c478bd9Sstevel@tonic-gate 	int n;
3037c478bd9Sstevel@tonic-gate 	dev32_t d32;
3047c478bd9Sstevel@tonic-gate 	extern uint_t nproc;
3057c478bd9Sstevel@tonic-gate 
3067c478bd9Sstevel@tonic-gate 	n = v.v_proc - nproc;
3077c478bd9Sstevel@tonic-gate 
3087c478bd9Sstevel@tonic-gate 	bzero((caddr_t)sp, sizeof (*sp));
3097c478bd9Sstevel@tonic-gate 	sp->f_bsize	= DEV_BSIZE;
3107c478bd9Sstevel@tonic-gate 	sp->f_frsize	= DEV_BSIZE;
3117c478bd9Sstevel@tonic-gate 	sp->f_blocks	= (fsblkcnt64_t)0;
3127c478bd9Sstevel@tonic-gate 	sp->f_bfree	= (fsblkcnt64_t)0;
3137c478bd9Sstevel@tonic-gate 	sp->f_bavail	= (fsblkcnt64_t)0;
3147c478bd9Sstevel@tonic-gate 	sp->f_files	= (fsfilcnt64_t)v.v_proc + 2;
3157c478bd9Sstevel@tonic-gate 	sp->f_ffree	= (fsfilcnt64_t)n;
3167c478bd9Sstevel@tonic-gate 	sp->f_favail	= (fsfilcnt64_t)n;
3177c478bd9Sstevel@tonic-gate 	(void) cmpldev(&d32, vfsp->vfs_dev);
3187c478bd9Sstevel@tonic-gate 	sp->f_fsid	= d32;
3197c478bd9Sstevel@tonic-gate 	(void) strcpy(sp->f_basetype, vfssw[procfstype].vsw_name);
3207c478bd9Sstevel@tonic-gate 	sp->f_flag = vf_to_stf(vfsp->vfs_flag);
3217c478bd9Sstevel@tonic-gate 	sp->f_namemax = 64;		/* quite arbitrary */
3227c478bd9Sstevel@tonic-gate 	bzero(sp->f_fstr, sizeof (sp->f_fstr));
3237c478bd9Sstevel@tonic-gate 	(void) strcpy(sp->f_fstr, "/proc");
3247c478bd9Sstevel@tonic-gate 	(void) strcpy(&sp->f_fstr[6], "/proc");
3257c478bd9Sstevel@tonic-gate 	return (0);
3267c478bd9Sstevel@tonic-gate }
327