diff options
Diffstat (limited to 'drivers/iommu/iommufd/io_pagetable.c')
| -rw-r--r-- | drivers/iommu/iommufd/io_pagetable.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/iommu/iommufd/io_pagetable.c b/drivers/iommu/iommufd/io_pagetable.c index a120c2ae942a..0bf6ca77888c 100644 --- a/drivers/iommu/iommufd/io_pagetable.c +++ b/drivers/iommu/iommufd/io_pagetable.c @@ -10,6 +10,7 @@ */ #include <linux/err.h> #include <linux/errno.h> +#include <linux/file.h> #include <linux/iommu.h> #include <linux/iommufd.h> #include <linux/lockdep.h> @@ -471,21 +472,27 @@ int iopt_map_user_pages(struct iommufd_ctx *ictx, struct io_pagetable *iopt, * @iopt: io_pagetable to act on * @iova: If IOPT_ALLOC_IOVA is set this is unused on input and contains * the chosen iova on output. Otherwise is the iova to map to on input - * @file: file to map + * @fd: fdno of a file to map * @start: map file starting at this byte offset * @length: Number of bytes to map * @iommu_prot: Combination of IOMMU_READ/WRITE/etc bits for the mapping * @flags: IOPT_ALLOC_IOVA or zero */ int iopt_map_file_pages(struct iommufd_ctx *ictx, struct io_pagetable *iopt, - unsigned long *iova, struct file *file, - unsigned long start, unsigned long length, - int iommu_prot, unsigned int flags) + unsigned long *iova, int fd, unsigned long start, + unsigned long length, int iommu_prot, + unsigned int flags) { struct iopt_pages *pages; + struct file *file; + + file = fget(fd); + if (!file) + return -EBADF; pages = iopt_alloc_file_pages(file, start, length, iommu_prot & IOMMU_WRITE); + fput(file); if (IS_ERR(pages)) return PTR_ERR(pages); return iopt_map_common(ictx, iopt, pages, iova, length, |