Differential D46709 Diff 143505 sys/kern/vfs_default.c

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sys/kern/vfs_default.c

Show First 20 Lines • Show All 285 Lines • ▼ Show 20 Lines	dirent_exists(struct vnode vp, const char dirname, struct thread *td)
size_t dirbuflen, len;		size_t dirbuflen, len;
off_t off;		off_t off;
struct dirent *dp;		struct dirent *dp;
struct vattr va;		struct vattr va;

ASSERT_VOP_LOCKED(vp, "vnode not locked");		ASSERT_VOP_LOCKED(vp, "vnode not locked");
KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));		KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));

error = VOP_GETATTR(vp, &va, td->td_ucred);		error = VOP_GETATTR(vp, 0, &va, td->td_ucred);
if (error != 0)		if (error != 0)
return (error);		return (error);

dirbuflen = MAX(DEV_BSIZE, GENERIC_MAXDIRSIZ);		dirbuflen = MAX(DEV_BSIZE, GENERIC_MAXDIRSIZ);
if (dirbuflen < va.va_blocksize)		if (dirbuflen < va.va_blocksize)
dirbuflen = va.va_blocksize;		dirbuflen = va.va_blocksize;
dirbuf = malloc(dirbuflen, M_TEMP, M_WAITOK);		dirbuf = malloc(dirbuflen, M_TEMP, M_WAITOK);

▲ Show 20 Lines • Show All 77 Lines • ▼ Show 20 Lines	vop_stdadvlock(struct vop_advlock_args *ap)
if (ap->a_fl->l_whence == SEEK_END) {		if (ap->a_fl->l_whence == SEEK_END) {
/*		/*
* The NFSv4 server must avoid doing a vn_lock() here, since it		* The NFSv4 server must avoid doing a vn_lock() here, since it
* can deadlock the nfsd threads, due to a LOR. Fortunately		* can deadlock the nfsd threads, due to a LOR. Fortunately
* the NFSv4 server always uses SEEK_SET and this code is		* the NFSv4 server always uses SEEK_SET and this code is
* only required for the SEEK_END case.		* only required for the SEEK_END case.
*/		*/
vn_lock(vp, LK_SHARED \| LK_RETRY);		vn_lock(vp, LK_SHARED \| LK_RETRY);
error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);		error = VOP_GETATTR(vp, 0, &vattr, curthread->td_ucred);
VOP_UNLOCK(vp);		VOP_UNLOCK(vp);
if (error)		if (error)
return (error);		return (error);
} else		} else
vattr.va_size = 0;		vattr.va_size = 0;

return (lf_advlock(ap, &(vp->v_lockf), vattr.va_size));		return (lf_advlock(ap, &(vp->v_lockf), vattr.va_size));
}		}

int		int
vop_stdadvlockasync(struct vop_advlockasync_args *ap)		vop_stdadvlockasync(struct vop_advlockasync_args *ap)
{		{
struct vnode *vp;		struct vnode *vp;
struct vattr vattr;		struct vattr vattr;
int error;		int error;

vp = ap->a_vp;		vp = ap->a_vp;
if (ap->a_fl->l_whence == SEEK_END) {		if (ap->a_fl->l_whence == SEEK_END) {
/* The size argument is only needed for SEEK_END. */		/* The size argument is only needed for SEEK_END. */
vn_lock(vp, LK_SHARED \| LK_RETRY);		vn_lock(vp, LK_SHARED \| LK_RETRY);
error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);		error = VOP_GETATTR(vp, 0, &vattr, curthread->td_ucred);
VOP_UNLOCK(vp);		VOP_UNLOCK(vp);
if (error)		if (error)
return (error);		return (error);
} else		} else
vattr.va_size = 0;		vattr.va_size = 0;

return (lf_advlockasync(ap, &(vp->v_lockf), vattr.va_size));		return (lf_advlockasync(ap, &(vp->v_lockf), vattr.va_size));
}		}
▲ Show 20 Lines • Show All 274 Lines • ▼ Show 20 Lines	vop_stdvptocnp(struct vop_vptocnp_args *ap)
struct thread *const td = curthread;		struct thread *const td = curthread;
struct ucred *const cred = td->td_ucred;		struct ucred *const cred = td->td_ucred;
struct dirent *dp;		struct dirent *dp;
struct vnode *mvp;		struct vnode *mvp;

if (vp->v_type != VDIR)		if (vp->v_type != VDIR)
return (ENOENT);		return (ENOENT);

error = VOP_GETATTR(vp, &va, cred);		error = VOP_GETATTR(vp, 0, &va, cred);
if (error)		if (error)
return (error);		return (error);

VREF(vp);		VREF(vp);
locked = VOP_ISLOCKED(vp);		locked = VOP_ISLOCKED(vp);
VOP_UNLOCK(vp);		VOP_UNLOCK(vp);
NDINIT_ATVP(&nd, LOOKUP, FOLLOW \| LOCKSHARED \| LOCKLEAF, UIO_SYSSPACE,		NDINIT_ATVP(&nd, LOOKUP, FOLLOW \| LOCKSHARED \| LOCKLEAF, UIO_SYSSPACE,
"..", vp);		"..", vp);
▲ Show 20 Lines • Show All 114 Lines • ▼ Show 20 Lines	#endif
buf = NULL;		buf = NULL;
error = 0;		error = 0;
td = curthread;		td = curthread;
vap = &vattr;		vap = &vattr;
vp = ap->a_vp;		vp = ap->a_vp;
len = *ap->a_len;		len = *ap->a_len;
offset = *ap->a_offset;		offset = *ap->a_offset;

error = VOP_GETATTR(vp, vap, ap->a_cred);		error = VOP_GETATTR(vp, 0, vap, ap->a_cred);
if (error != 0)		if (error != 0)
goto out;		goto out;
fsize = vap->va_size;		fsize = vap->va_size;
iosize = vap->va_blocksize;		iosize = vap->va_blocksize;
if (iosize == 0)		if (iosize == 0)
iosize = BLKDEV_IOSIZE;		iosize = BLKDEV_IOSIZE;
if (iosize > maxphys)		if (iosize > maxphys)
iosize = maxphys;		iosize = maxphys;
▲ Show 20 Lines • Show All 159 Lines • ▼ Show 20 Lines	vop_stddeallocate(struct vop_deallocate_args *ap)
int error;		int error;
struct vattr va;		struct vattr va;
off_t noff, xfersize, rem;		off_t noff, xfersize, rem;

vp = ap->a_vp;		vp = ap->a_vp;
offset = *ap->a_offset;		offset = *ap->a_offset;
cred = ap->a_cred;		cred = ap->a_cred;

error = VOP_GETATTR(vp, &va, cred);		error = VOP_GETATTR(vp, 0, &va, cred);
if (error)		if (error)
return (error);		return (error);

len = omin((off_t)va.va_size - offset, *ap->a_len);		len = omin((off_t)va.va_size - offset, *ap->a_len);
while (len > 0) {		while (len > 0) {
noff = offset;		noff = offset;
error = vn_bmap_seekhole_locked(vp, FIOSEEKDATA, &noff, cred);		error = vn_bmap_seekhole_locked(vp, FIOSEEKDATA, &noff, cred);
if (error) {		if (error) {
▲ Show 20 Lines • Show All 298 Lines • ▼ Show 20 Lines	vop_stdioctl(struct vop_ioctl_args *ap)
switch (ap->a_command) {		switch (ap->a_command) {
case FIOSEEKDATA:		case FIOSEEKDATA:
case FIOSEEKHOLE:		case FIOSEEKHOLE:
vp = ap->a_vp;		vp = ap->a_vp;
error = vn_lock(vp, LK_SHARED);		error = vn_lock(vp, LK_SHARED);
if (error != 0)		if (error != 0)
return (EBADF);		return (EBADF);
if (vp->v_type == VREG)		if (vp->v_type == VREG)
error = VOP_GETATTR(vp, &va, ap->a_cred);		error = VOP_GETATTR(vp, 0, &va, ap->a_cred);
else		else
error = ENOTTY;		error = ENOTTY;
if (error == 0) {		if (error == 0) {
offp = ap->a_data;		offp = ap->a_data;
if (offp < 0 \|\| offp >= va.va_size)		if (offp < 0 \|\| offp >= va.va_size)
error = ENXIO;		error = ENXIO;
else if (ap->a_command == FIOSEEKHOLE)		else if (ap->a_command == FIOSEEKHOLE)
*offp = va.va_size;		*offp = va.va_size;
▲ Show 20 Lines • Show All 176 Lines • ▼ Show 20 Lines	vop_stdstat(struct vop_stat_args *a)
* about them.		* about them.
*/		*/
vap->va_birthtime.tv_sec = -1;		vap->va_birthtime.tv_sec = -1;
vap->va_birthtime.tv_nsec = 0;		vap->va_birthtime.tv_nsec = 0;
vap->va_fsid = VNOVAL;		vap->va_fsid = VNOVAL;
vap->va_gen = 0;		vap->va_gen = 0;
vap->va_rdev = NODEV;		vap->va_rdev = NODEV;

error = VOP_GETATTR(vp, vap, a->a_active_cred);		error = VOP_GETATTR(vp, a->a_flags, vap, a->a_active_cred);
if (error)		if (error)
goto out;		goto out;

/*		/*
* Zero the spare stat fields		* Zero the spare stat fields
*/		*/
bzero(sb, sizeof *sb);		bzero(sb, sizeof *sb);

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