Differential D30140 Diff 88893 sys/fs/fdescfs/fdesc_vnops.c

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sys/fs/fdescfs/fdesc_vnops.c

Show First 20 Lines • Show All 249 Lines • ▼ Show 20 Lines	loop:
*vpp = vp;		*vpp = vp;
return (0);		return (0);
}		}

struct fdesc_get_ino_args {		struct fdesc_get_ino_args {
fdntype ftype;		fdntype ftype;
unsigned fd_fd;		unsigned fd_fd;
int ix;		int ix;
		bool use_real_vp;
struct file *fp;		struct file *fp;
struct thread *td;		struct thread *td;
};		};

static int		static int
fdesc_get_ino_alloc(struct mount mp, void arg, int lkflags,		fdesc_get_ino_alloc(struct mount mp, void arg, int lkflags,
struct vnode **rvp)		struct vnode **rvp)
{		{
struct fdesc_get_ino_args *a;		struct fdesc_get_ino_args *a;
		struct vnode *vp;
int error;		int error;

a = arg;		a = arg;
		if (a->use_real_vp && a->fp->f_type == DTYPE_VNODE) {
		vp = a->fp->f_vnode;
		vget(vp, lkflags \| LK_RETRY);
		*rvp = vp;
		error = 0;
		} else {
error = fdesc_allocvp(a->ftype, a->fd_fd, a->ix, mp, rvp);		error = fdesc_allocvp(a->ftype, a->fd_fd, a->ix, mp, rvp);
		}
fdrop(a->fp, a->td);		fdrop(a->fp, a->td);
return (error);		return (error);
}		}

/*		/*
* vp is the current namei directory		* vp is the current namei directory
* ndp is the name to locate in that directory...		* ndp is the name to locate in that directory...
*/		*/
▲ Show 20 Lines • Show All 77 Lines • ▼ Show 20 Lines	if (VTOFDESC(dvp)->fd_ix == FD_DESC + fd) {
* and the root vnode lock will be obtained afterwards (in case		* and the root vnode lock will be obtained afterwards (in case
* we're looking up the fd of the root vnode), which will be the		* we're looking up the fd of the root vnode), which will be the
* opposite lock order. Vhold the root vnode first so we don't		* opposite lock order. Vhold the root vnode first so we don't
* lose it.		* lose it.
*/		*/
arg.ftype = Fdesc;		arg.ftype = Fdesc;
arg.fd_fd = fd;		arg.fd_fd = fd;
arg.ix = FD_DESC + fd;		arg.ix = FD_DESC + fd;
		arg.use_real_vp = cnp->cn_nameiop == LOOKUP &&
		(cnp->cn_flags & ISOPEN) == 0;
arg.fp = fp;		arg.fp = fp;
arg.td = td;		arg.td = td;
error = vn_vget_ino_gen(dvp, fdesc_get_ino_alloc, &arg,		error = vn_vget_ino_gen(dvp, fdesc_get_ino_alloc, &arg,
LK_EXCLUSIVE, &fvp);		LK_EXCLUSIVE, &fvp);
}		}

if (error)		if (error)
goto bad;		goto bad;
▲ Show 20 Lines • Show All 289 Lines • Show Last 20 Lines