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| author | Jike Song <jike.song@intel.com> | 2017-01-12 16:52:03 +0800 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2017-01-12 16:05:35 -0700 |
| commit | d1b333d12cde9cabe898160b6be9769d3382d81c (patch) | |
| tree | a27dc98b8ade04fcac5957827de0b2e335c21328 /drivers/vfio | |
| parent | 19c816e8e455f58da9997e4c6626f06203d8fbf0 (diff) | |
| download | linux-d1b333d12cde9cabe898160b6be9769d3382d81c.tar.gz linux-d1b333d12cde9cabe898160b6be9769d3382d81c.tar.bz2 linux-d1b333d12cde9cabe898160b6be9769d3382d81c.zip | |
vfio iommu type1: fix the testing of capability for remote task
Before the mdev enhancement type1 iommu used capable() to test the
capability of current task; in the course of mdev development a
new requirement, testing for another task other than current, was
raised. ns_capable() was used for this purpose, however it still
tests current, the only difference is, in a specified namespace.
Fix it by using has_capability() instead, which tests the cap for
specified task in init_user_ns, the same namespace as capable().
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Jike Song <jike.song@intel.com>
Reviewed-by: James Morris <james.l.morris@oracle.com>
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 9266271a787a..77373e51b283 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -495,8 +495,7 @@ static int vfio_pin_page_external(struct vfio_dma *dma, unsigned long vaddr, unsigned long *pfn_base, bool do_accounting) { unsigned long limit; - bool lock_cap = ns_capable(task_active_pid_ns(dma->task)->user_ns, - CAP_IPC_LOCK); + bool lock_cap = has_capability(dma->task, CAP_IPC_LOCK); struct mm_struct *mm; int ret; bool rsvd; |