vfs_syscalls.c (91921bd5976bc40a97f48b9a019b381b77ab6f85) vfs_syscalls.c (0429e37ade0f33fd1159e425bfa5a5d531b3e8a1)
1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

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326 */
327 cache_purge(vp);
328 if (!error) {
329 simple_lock(&vp->v_interlock);
330 vp->v_flag &= ~VMOUNT;
331 vp->v_mountedhere = mp;
332 simple_unlock(&vp->v_interlock);
333 simple_lock(&mountlist_slock);
1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

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326 */
327 cache_purge(vp);
328 if (!error) {
329 simple_lock(&vp->v_interlock);
330 vp->v_flag &= ~VMOUNT;
331 vp->v_mountedhere = mp;
332 simple_unlock(&vp->v_interlock);
333 simple_lock(&mountlist_slock);
334 CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
334 TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list);
335 simple_unlock(&mountlist_slock);
336 checkdirs(vp);
337 VOP_UNLOCK(vp, 0, p);
338 if ((mp->mnt_flag & MNT_RDONLY) == 0)
339 error = vfs_allocate_syncvnode(mp);
340 vfs_unbusy(mp, p);
341 if ((error = VFS_START(mp, 0, p)) != 0)
342 vrele(vp);

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489 mp->mnt_kern_flag &= ~MNTK_UNMOUNT;
490 mp->mnt_flag |= async_flag;
491 lockmgr(&mp->mnt_lock, LK_RELEASE | LK_INTERLOCK | LK_REENABLE,
492 &mountlist_slock, p);
493 if (mp->mnt_kern_flag & MNTK_MWAIT)
494 wakeup((caddr_t)mp);
495 return (error);
496 }
335 simple_unlock(&mountlist_slock);
336 checkdirs(vp);
337 VOP_UNLOCK(vp, 0, p);
338 if ((mp->mnt_flag & MNT_RDONLY) == 0)
339 error = vfs_allocate_syncvnode(mp);
340 vfs_unbusy(mp, p);
341 if ((error = VFS_START(mp, 0, p)) != 0)
342 vrele(vp);

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489 mp->mnt_kern_flag &= ~MNTK_UNMOUNT;
490 mp->mnt_flag |= async_flag;
491 lockmgr(&mp->mnt_lock, LK_RELEASE | LK_INTERLOCK | LK_REENABLE,
492 &mountlist_slock, p);
493 if (mp->mnt_kern_flag & MNTK_MWAIT)
494 wakeup((caddr_t)mp);
495 return (error);
496 }
497 CIRCLEQ_REMOVE(&mountlist, mp, mnt_list);
497 TAILQ_REMOVE(&mountlist, mp, mnt_list);
498 if ((coveredvp = mp->mnt_vnodecovered) != NULLVP) {
499 coveredvp->v_mountedhere = (struct mount *)0;
500 vrele(coveredvp);
501 }
502 mp->mnt_vfc->vfc_refcount--;
503 if (!LIST_EMPTY(&mp->mnt_vnodelist))
504 panic("unmount: dangling vnode");
505 lockmgr(&mp->mnt_lock, LK_RELEASE | LK_INTERLOCK, &mountlist_slock, p);

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528sync(p, uap)
529 struct proc *p;
530 struct sync_args *uap;
531{
532 register struct mount *mp, *nmp;
533 int asyncflag;
534
535 simple_lock(&mountlist_slock);
498 if ((coveredvp = mp->mnt_vnodecovered) != NULLVP) {
499 coveredvp->v_mountedhere = (struct mount *)0;
500 vrele(coveredvp);
501 }
502 mp->mnt_vfc->vfc_refcount--;
503 if (!LIST_EMPTY(&mp->mnt_vnodelist))
504 panic("unmount: dangling vnode");
505 lockmgr(&mp->mnt_lock, LK_RELEASE | LK_INTERLOCK, &mountlist_slock, p);

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528sync(p, uap)
529 struct proc *p;
530 struct sync_args *uap;
531{
532 register struct mount *mp, *nmp;
533 int asyncflag;
534
535 simple_lock(&mountlist_slock);
536 mp = CIRCLEQ_FIRST(&mountlist);
537 for (; mp != (void *)&mountlist; mp = nmp) {
536 for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) {
538 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock, p)) {
537 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock, p)) {
539 nmp = CIRCLEQ_NEXT(mp, mnt_list);
538 nmp = TAILQ_NEXT(mp, mnt_list);
540 continue;
541 }
542 if ((mp->mnt_flag & MNT_RDONLY) == 0) {
543 asyncflag = mp->mnt_flag & MNT_ASYNC;
544 mp->mnt_flag &= ~MNT_ASYNC;
545 vfs_msync(mp, MNT_NOWAIT);
546 VFS_SYNC(mp, MNT_NOWAIT,
547 ((p != NULL) ? p->p_ucred : NOCRED), p);
548 mp->mnt_flag |= asyncflag;
549 }
550 simple_lock(&mountlist_slock);
539 continue;
540 }
541 if ((mp->mnt_flag & MNT_RDONLY) == 0) {
542 asyncflag = mp->mnt_flag & MNT_ASYNC;
543 mp->mnt_flag &= ~MNT_ASYNC;
544 vfs_msync(mp, MNT_NOWAIT);
545 VFS_SYNC(mp, MNT_NOWAIT,
546 ((p != NULL) ? p->p_ucred : NOCRED), p);
547 mp->mnt_flag |= asyncflag;
548 }
549 simple_lock(&mountlist_slock);
551 nmp = CIRCLEQ_NEXT(mp, mnt_list);
550 nmp = TAILQ_NEXT(mp, mnt_list);
552 vfs_unbusy(mp, p);
553 }
554 simple_unlock(&mountlist_slock);
555#if 0
556/*
557 * XXX don't call vfs_bufstats() yet because that routine
558 * was not imported in the Lite2 merge.
559 */

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713 register struct statfs *sp;
714 caddr_t sfsp;
715 long count, maxcount, error;
716
717 maxcount = SCARG(uap, bufsize) / sizeof(struct statfs);
718 sfsp = (caddr_t)SCARG(uap, buf);
719 count = 0;
720 simple_lock(&mountlist_slock);
551 vfs_unbusy(mp, p);
552 }
553 simple_unlock(&mountlist_slock);
554#if 0
555/*
556 * XXX don't call vfs_bufstats() yet because that routine
557 * was not imported in the Lite2 merge.
558 */

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712 register struct statfs *sp;
713 caddr_t sfsp;
714 long count, maxcount, error;
715
716 maxcount = SCARG(uap, bufsize) / sizeof(struct statfs);
717 sfsp = (caddr_t)SCARG(uap, buf);
718 count = 0;
719 simple_lock(&mountlist_slock);
721 mp = CIRCLEQ_FIRST(&mountlist);
722 for (; mp != (void *)&mountlist; mp = nmp) {
720 for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) {
723 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock, p)) {
721 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock, p)) {
724 nmp = CIRCLEQ_NEXT(mp, mnt_list);
722 nmp = TAILQ_NEXT(mp, mnt_list);
725 continue;
726 }
727 if (sfsp && count < maxcount) {
728 sp = &mp->mnt_stat;
729 /*
730 * If MNT_NOWAIT or MNT_LAZY is specified, do not
731 * refresh the fsstat cache. MNT_NOWAIT or MNT_LAZY
732 * overrides MNT_WAIT.
733 */
734 if (((SCARG(uap, flags) & (MNT_LAZY|MNT_NOWAIT)) == 0 ||
735 (SCARG(uap, flags) & MNT_WAIT)) &&
736 (error = VFS_STATFS(mp, sp, p))) {
737 simple_lock(&mountlist_slock);
723 continue;
724 }
725 if (sfsp && count < maxcount) {
726 sp = &mp->mnt_stat;
727 /*
728 * If MNT_NOWAIT or MNT_LAZY is specified, do not
729 * refresh the fsstat cache. MNT_NOWAIT or MNT_LAZY
730 * overrides MNT_WAIT.
731 */
732 if (((SCARG(uap, flags) & (MNT_LAZY|MNT_NOWAIT)) == 0 ||
733 (SCARG(uap, flags) & MNT_WAIT)) &&
734 (error = VFS_STATFS(mp, sp, p))) {
735 simple_lock(&mountlist_slock);
738 nmp = CIRCLEQ_NEXT(mp, mnt_list);
736 nmp = TAILQ_NEXT(mp, mnt_list);
739 vfs_unbusy(mp, p);
740 continue;
741 }
742 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
743 error = copyout((caddr_t)sp, sfsp, sizeof(*sp));
744 if (error) {
745 vfs_unbusy(mp, p);
746 return (error);
747 }
748 sfsp += sizeof(*sp);
749 }
750 count++;
751 simple_lock(&mountlist_slock);
737 vfs_unbusy(mp, p);
738 continue;
739 }
740 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
741 error = copyout((caddr_t)sp, sfsp, sizeof(*sp));
742 if (error) {
743 vfs_unbusy(mp, p);
744 return (error);
745 }
746 sfsp += sizeof(*sp);
747 }
748 count++;
749 simple_lock(&mountlist_slock);
752 nmp = CIRCLEQ_NEXT(mp, mnt_list);
750 nmp = TAILQ_NEXT(mp, mnt_list);
753 vfs_unbusy(mp, p);
754 }
755 simple_unlock(&mountlist_slock);
756 if (sfsp && count > maxcount)
757 p->p_retval[0] = maxcount;
758 else
759 p->p_retval[0] = count;
760 return (0);

--- 2580 unchanged lines hidden --- 		751 vfs_unbusy(mp, p);
752 }
753 simple_unlock(&mountlist_slock);
754 if (sfsp && count > maxcount)
755 p->p_retval[0] = maxcount;
756 else
757 p->p_retval[0] = count;
758 return (0);

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