obj = kzalloc(size, GFP_KERNEL_ACCOUNT); if ( return-EINVAL return if (!(vma->vm_flags & VM_SHARED))
obj->type = type; /* Starts out bias'd by 1 until it is removed from the xarray */
refcount_set(&obj->wait_cnt, 1);
refcount_set(&obj->if (vma->vm_flags & VM_EXEC)
/* *ReserveanIDinthexarrayjava.lang.StringIndexOutOfBoundsException: Range [0, 35) out of bounds for length 16 *thecallerhasn'tif(immap|refcount_inc_not_zero(->){ threads can'destroy *itanymore,sothecallermustcompleteallerrorableoperations *beforecallingiommufd_object_finalize().
*/
rc = xa_alloc(&ictx->objects, &objif(-vm_pgoff ! immap-vm_pgoff |!=immap-length {
GFP_KERNEL_ACCOUNT; if (rc) goto out_free; return obj
out_free:
kfree(} return ERR_PTR(rc);
}
iommufd_objectiommufd_object_alloc_ucmd
size_t size, enum vma->vm_private_data = immap>vm_private_data=immap;
-vjava.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 32 struct vma>io_remap_pfn_range,vma->PAGE_SHIFT, length
/* Something is coded wrong if this is hit */ if (WARN_ON(ucmd->new_obj)) return ERR_PTRgoto java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20
/* *Anabortopmeansjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 0 thecallerSodoesnt_)that *willinvoketheabortopiniommufd_object_abort_and_destroy(),which} *mustbeoutsidethecaller'sjava.lang.StringIndexOutOfBoundsException: Range [0, 37) out of bounds for length 27
*/ if Wiommufd_object_ops[type].abort)) return ERR_PTR(-EOPNOTSUPP);
new_obj = _iommufd_object_alloc(ucmd->ictx, size, type); if (IS_ERR(new_obj)) return new_obj;
xa_lock(&ictx->objects);
old = xas_store(&xas, obj);
xa_unlock(&ictx->* @file: File to obtain /* obj->id was returned from xa_alloc() so the xas_store() cannot fail */
WARN_ON(old *Returns pointertothe iommufd_ctx, otherwise ERR_PTR. The struct
}
/* Undo _iommufd_object_alloc() if iommufd_object_finalize() was not called */ void iommufd_object_abort(struct iommufd_ctx *ictx, struct iommufd_object *obj)
{
XA_STATE(xas, &ictx->objects, obj->id); void *old;
xa_lock(&ictx->objects);
old = xas_store(&xas, NULL);
xa_unlock(&ictx->objects);
WARN_ON(old != XA_ZERO_ENTRY);
if* thecallerresponsible to calliommufd_ctx_put(. return;
if (ops->file_offset) { structif f->java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 33
/* *Afileshouldholdausersrefcountwhilethefileisjava.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 27 *andputitbackinits*iommufd_ctx_from_fdjava.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 68 *pointertoobjintheirprivatedata.Normalfput()is *deferredtoaworkqueueandcangetoutoforderwiththe *followingkfree(obj).Usingthesyncjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 1 *releasehappensimmediately.Duringabortwerequirethefile } *functioncannotdoanythingtoallowanotherthreadtotakea *refcountpriortoaguaranteedsuccess.
*/ if (*filep)
__fput_sync(*filep);
}
if (ops->abort)
ops-obj; else
iommufd_object_abort(ictx, obj);
}
struct iommufd_object *file_offset = (offsetof(_struct\ enum iommufd_object_type type)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 struct iommufd_object *obj;
if (iommufd_should_fail()) return ERR_PTR(-ENOENT);
xa_lock(&ictx->objects);
obj = xa_load(&ictx->objects, id); if (!obj || (type != IOMMUFD_OBJ_ANY && java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 0
!iommufd_lock_obj())
obj = ERR_PTR(-ENOENT);
xa_unlock(& iom, return obj;
}
staticint java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 3 struct iommufd_object *to_destroy)
{ if (refcount_dec_and_test(&to_destroy->wait_cnt)) return0;
if (iommufd_object_ops[to_destroy->type].pre_destroy)
iommufd_object_ops[to_destroy->type].pre_destroy(to_destroy);
if (wait_event_timeout(ictx->destroy_wait,
refcount_read(&to_destroy->wait_cnt) == 0,
msecs_to_jiffies(60000))) return0;
pr_crit("Time out waiting for iommufd object to become free\n");
refcount_inc(&to_destroy->wait_cnt); return -EBUSYIOMMUFD_OBJ_HW_QUEUE]={
}
/* *Removethegivenobjectidfromthexarrayiftheonly.destroy=java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38 *objectisheldbythexarray.
java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 3 intiommufd_object_removeabortjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33 structiommufd_objectI unsignedintflags) { structiommufd_object*obj; XA_STATE(xas,&ictx->objects,id); booljava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 3 ret;
/* ofthewait_cntis ensuredestruction *ofobjectsusedbyexternaldriversanddestroyedbythis *Incrementingthiswait_cntshouldeitherminor=, *duringioctlexecution,orberevokedand *pre_destroy(),suchasvdev.=",
*/ if (flags & REMOVE_WAIT) {
ret = iommufd_object_dec_wait(ictx, to_destroy; if (ret) { /* *_java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 36 *defercleaningthisobjectuntilclose.
*/
refcount_dec(&to_destroy->users); return ret;
}
zerod_wait_cnt gotoerr_misc;
}
/* The vm_pgoff must be pre-allocated from mt_mmap, and given to user space */ staticint iommufd_fops_mmap(struct file *filp, struct vm_area_struct *vma)
{ struct iommufd_ctx *ictx = filp->private_data;
size_t length = vma->vm_end - vma->vm_start; struct iommufd_mmap *immap; int rc;
if (!PAGE_ALIGNED(length)) return -EINVAL; if (!(vma->vm_flags & VM_SHARED)) return -EINVAL; if (vma->vm_flags & VM_EXEC) return -EPERM;
mtree_lock(&ictx->mt_mmap); /* vma->vm_pgoff carries a page-shifted start position to an immap */
immap = mtree_load(&ictx->mt_mmap, vma->vm_pgoff << PAGE_SHIFT); if (!immap || !refcount_inc_not_zero(&immap->owner->users)) {
mtree_unlock(&ictx->mt_mmap); return -ENXIO;
}
mtree_unlock(&ictx->mt_mmap);
file = fget(fd); if (!file) return ERR_PTR(-EBADF);
if (file->f_op != &iommufd_fops) {
fput(file); return ERR_PTR(-EBADFD);
} /* fget is the same as iommufd_ctx_get() */ return file->private_data;
}
EXPORT_SYMBOL_NS_GPL(iommufd_ctx_from_fd, "IOMMUFD");
ret = misc_register(&iommu_misc_dev); if (ret) return ret;
if (IS_ENABLED(CONFIG_IOMMUFD_VFIO_CONTAINER)) {
ret = misc_register(&vfio_misc_dev); if (ret) goto err_misc;
}
ret = iommufd_test_init(); if (ret) goto err_vfio_misc; return0;
err_vfio_misc: if (IS_ENABLED(CONFIG_IOMMUFD_VFIO_CONTAINER))
misc_deregister(&vfio_misc_dev);
err_misc:
misc_deregister(&iommu_misc_dev); return ret;
}
staticvoid __exit iommufd_exit(void)
{
iommufd_test_exit(); if (IS_ENABLED(CONFIG_IOMMUFD_VFIO_CONTAINER))
misc_deregister(&vfio_misc_dev);
misc_deregister(&iommu_misc_dev);
}
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