C++ VFS_MPUNLOCK函数代码示例

本文整理汇总了C++中VFS_MPUNLOCK函数的典型用法代码示例。如果您正苦于以下问题：C++ VFS_MPUNLOCK函数的具体用法？C++ VFS_MPUNLOCK怎么用？C++ VFS_MPUNLOCK使用的例子？那么, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了VFS_MPUNLOCK函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: vop_nremove

/*
 * nremove takes a locked, resolved ncp that generally represents a
 * positive hit and removes the file.
 *
 * The dvp passed in is referenced but unlocked.
 *
 * The namecache is automatically adjusted by this function.  The ncp
 * is left locked on return.
 *
 * MPSAFE
 */
int
vop_nremove(struct vop_ops *ops, struct nchandle *nch, struct vnode *dvp,
	    struct ucred *cred)
{
	struct vop_nremove_args ap;
	VFS_MPLOCK_DECLARE;
	int error;
	struct vattr va;

	ap.a_head.a_desc = &vop_nremove_desc;
	ap.a_head.a_ops = ops;
	ap.a_nch = nch;
	ap.a_dvp = dvp;
	ap.a_cred = cred;

	if ((error = VOP_GETATTR(nch->ncp->nc_vp, &va)) != 0)
		return (error);

	VFS_MPLOCK1(dvp->v_mount);
	DO_OPS(ops, error, &ap, vop_nremove);
	/* Only update space counters if this is the last hard link */
	if ((error == 0) && (va.va_nlink == 1)) {
		VFS_ACCOUNT(nch->mount, va.va_uid, va.va_gid, -va.va_size);
	}
	VFS_MPUNLOCK(dvp->v_mount);
	return(error);
}

开发者ID:AhmadTux，项目名称:DragonFlyBSD，代码行数:38，代码来源:vfs_vopops.c

示例2: vop_open

/*
 * NOTE: VAGE is always cleared when calling VOP_OPEN().
 */
int
vop_open(struct vop_ops *ops, struct vnode *vp, int mode, struct ucred *cred,
	struct file *fp)
{
	struct vop_open_args ap;
	VFS_MPLOCK_DECLARE;
	int error;

	/*
	 * Decrement 3-2-1-0.  Does not decrement beyond 0
	 */
	if (vp->v_flag & VAGE0) {
		vclrflags(vp, VAGE0);
	} else if (vp->v_flag & VAGE1) {
		vclrflags(vp, VAGE1);
		vsetflags(vp, VAGE0);
	}

	ap.a_head.a_desc = &vop_open_desc;
	ap.a_head.a_ops = ops;
	ap.a_vp = vp;
	ap.a_fp = fp;
	ap.a_mode = mode;
	ap.a_cred = cred;

	VFS_MPLOCK1(vp->v_mount);
	DO_OPS(ops, error, &ap, vop_open);
	VFS_MPUNLOCK(vp->v_mount);
	return(error);
}

开发者ID:AhmadTux，项目名称:DragonFlyBSD，代码行数:33，代码来源:vfs_vopops.c

示例3: vop_write

/*
 * MPSAFE
 */
int
vop_write(struct vop_ops *ops, struct vnode *vp, struct uio *uio, int ioflag,
	struct ucred *cred)
{
	struct vop_write_args ap;
	VFS_MPLOCK_DECLARE;
	int error, do_accounting = 0;
	struct vattr va;
	uint64_t size_before=0, size_after=0;
	struct mount *mp;
	uint64_t offset, delta;

	ap.a_head.a_desc = &vop_write_desc;
	ap.a_head.a_ops = ops;
	ap.a_vp = vp;
	ap.a_uio = uio;
	ap.a_ioflag = ioflag;
	ap.a_cred = cred;

	/* is this a regular vnode ? */
	VFS_MPLOCK_FLAG(vp->v_mount, MNTK_WR_MPSAFE);
	if (vfs_quota_enabled && (vp->v_type == VREG)) {
		if ((error = VOP_GETATTR(vp, &va)) != 0)
			goto done;
		size_before = va.va_size;
		/* this file may already have been removed */
		if (va.va_nlink > 0)
			do_accounting = 1;

		offset = uio->uio_offset;
		if (ioflag & IO_APPEND)
			offset = size_before;
		size_after = offset + uio->uio_resid;
		if (size_after < size_before)
			size_after = size_before;
		delta = size_after - size_before;
		mp = vq_vptomp(vp);
		/* QUOTA CHECK */
		if (!vq_write_ok(mp, va.va_uid, va.va_gid, delta)) {
			error = EDQUOT;
			goto done;
		}
	}
	DO_OPS(ops, error, &ap, vop_write);
	if ((error == 0) && do_accounting) {
		VFS_ACCOUNT(mp, va.va_uid, va.va_gid, size_after - size_before);
	}
done:
	VFS_MPUNLOCK(vp->v_mount);
	return(error);
}

开发者ID:AhmadTux，项目名称:DragonFlyBSD，代码行数:54，代码来源:vfs_vopops.c

示例4: vop_print

/*
 * MPSAFE
 */
int
vop_print(struct vop_ops *ops, struct vnode *vp)
{
	struct vop_print_args ap;
	VFS_MPLOCK_DECLARE;
	int error;

	ap.a_head.a_desc = &vop_print_desc;
	ap.a_head.a_ops = ops;
	ap.a_vp = vp;

	VFS_MPLOCK1(vp->v_mount);
	DO_OPS(ops, error, &ap, vop_print);
	VFS_MPUNLOCK(vp->v_mount);
	return(error);
}

开发者ID:AhmadTux，项目名称:DragonFlyBSD，代码行数:19，代码来源:vfs_vopops.c

示例5: vop_close

/*
 * MPSAFE
 */
int
vop_close(struct vop_ops *ops, struct vnode *vp, int fflag)
{
	struct vop_close_args ap;
	VFS_MPLOCK_DECLARE;
	int error;

	ap.a_head.a_desc = &vop_close_desc;
	ap.a_head.a_ops = ops;
	ap.a_vp = vp;
	ap.a_fflag = fflag;

	VFS_MPLOCK1(vp->v_mount);
	DO_OPS(ops, error, &ap, vop_close);
	VFS_MPUNLOCK(vp->v_mount);
	return(error);
}

开发者ID:AhmadTux，项目名称:DragonFlyBSD，代码行数:20，代码来源:vfs_vopops.c

示例6: vop_kqfilter

/*
 * MPSAFE
 */
int
vop_kqfilter(struct vop_ops *ops, struct vnode *vp, struct knote *kn)
{
	struct vop_kqfilter_args ap;
	VFS_MPLOCK_DECLARE;
	int error;

	ap.a_head.a_desc = &vop_kqfilter_desc;
	ap.a_head.a_ops = ops;
	ap.a_vp = vp;
	ap.a_kn = kn;

	VFS_MPLOCK1(vp->v_mount);
	DO_OPS(ops, error, &ap, vop_kqfilter);
	VFS_MPUNLOCK(vp->v_mount);
	return(error);
}

开发者ID:AhmadTux，项目名称:DragonFlyBSD，代码行数:20，代码来源:vfs_vopops.c

示例7: vop_markatime

/*
 * MPSAFE
 */
int
vop_markatime(struct vop_ops *ops, struct vnode *vp, struct ucred *cred)
{
	struct vop_markatime_args ap;
	VFS_MPLOCK_DECLARE;
	int error;

	ap.a_head.a_desc = &vop_markatime_desc;
	ap.a_head.a_ops = ops;
	ap.a_vp = vp;
	ap.a_cred = cred;

	VFS_MPLOCK1(vp->v_mount);
	DO_OPS(ops, error, &ap, vop_markatime);
	VFS_MPUNLOCK(vp->v_mount);
	return(error);
}

开发者ID:AhmadTux，项目名称:DragonFlyBSD，代码行数:20，代码来源:vfs_vopops.c