Merge tag 'pull-fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs fget updates from Al Viro:
 "fget() to fdget() conversions"

* tag 'pull-fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fuse_dev_ioctl(): switch to fdget()
  cgroup_get_from_fd(): switch to fdget_raw()
  bpf: switch to fdget_raw()
  build_mount_idmapped(): switch to fdget()
  kill the last remaining user of proc_ns_fget()
  SVM-SEV: convert the rest of fget() uses to fdget() in there
  convert sgx_set_attribute() to fdget()/fdput()
  convert setns(2) to fdget()/fdput()

2 files changed, 19 insertions, 18 deletions

diff --git a/arch/x86/kernel/cpu/sgx/main.c b/arch/x86/kernel/cpu/sgx/main.c
index e5a37b6e9aa5..166692f2d501 100644
--- a/arch/x86/kernel/cpu/sgx/main.c
+++ b/arch/x86/kernel/cpu/sgx/main.c
@@ -892,20 +892,19 @@ static struct miscdevice sgx_dev_provision = {
 int sgx_set_attribute(unsigned long *allowed_attributes,
 		      unsigned int attribute_fd)
 {
-	struct file *file;
+	struct fd f = fdget(attribute_fd);
 
-	file = fget(attribute_fd);
-	if (!file)
+	if (!f.file)
 		return -EINVAL;
 
-	if (file->f_op != &sgx_provision_fops) {
-		fput(file);
+	if (f.file->f_op != &sgx_provision_fops) {
+		fdput(f);
 		return -EINVAL;
 	}
 
 	*allowed_attributes |= SGX_ATTR_PROVISIONKEY;
 
-	fput(file);
+	fdput(f);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(sgx_set_attribute);
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index c25aeb550cd9..52398d49bc2f 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -1767,18 +1767,20 @@ int sev_vm_move_enc_context_from(struct kvm *kvm, unsigned int source_fd)
 {
 	struct kvm_sev_info *dst_sev = &to_kvm_svm(kvm)->sev_info;
 	struct kvm_sev_info *src_sev, *cg_cleanup_sev;
-	struct file *source_kvm_file;
+	struct fd f = fdget(source_fd);
 	struct kvm *source_kvm;
 	bool charged = false;
 	int ret;
 
-	source_kvm_file = fget(source_fd);
-	if (!file_is_kvm(source_kvm_file)) {
+	if (!f.file)
+		return -EBADF;
+
+	if (!file_is_kvm(f.file)) {
 		ret = -EBADF;
 		goto out_fput;
 	}
 
-	source_kvm = source_kvm_file->private_data;
+	source_kvm = f.file->private_data;
 	ret = sev_lock_two_vms(kvm, source_kvm);
 	if (ret)
 		goto out_fput;
@@ -1828,8 +1830,7 @@ out_dst_cgroup:
 out_unlock:
 	sev_unlock_two_vms(kvm, source_kvm);
 out_fput:
-	if (source_kvm_file)
-		fput(source_kvm_file);
+	fdput(f);
 	return ret;
 }
 
@@ -2046,18 +2047,20 @@ failed:
 
 int sev_vm_copy_enc_context_from(struct kvm *kvm, unsigned int source_fd)
 {
-	struct file *source_kvm_file;
+	struct fd f = fdget(source_fd);
 	struct kvm *source_kvm;
 	struct kvm_sev_info *source_sev, *mirror_sev;
 	int ret;
 
-	source_kvm_file = fget(source_fd);
-	if (!file_is_kvm(source_kvm_file)) {
+	if (!f.file)
+		return -EBADF;
+
+	if (!file_is_kvm(f.file)) {
 		ret = -EBADF;
 		goto e_source_fput;
 	}
 
-	source_kvm = source_kvm_file->private_data;
+	source_kvm = f.file->private_data;
 	ret = sev_lock_two_vms(kvm, source_kvm);
 	if (ret)
 		goto e_source_fput;
@@ -2103,8 +2106,7 @@ int sev_vm_copy_enc_context_from(struct kvm *kvm, unsigned int source_fd)
 e_unlock:
 	sev_unlock_two_vms(kvm, source_kvm);
 e_source_fput:
-	if (source_kvm_file)
-		fput(source_kvm_file);
+	fdput(f);
 	return ret;
 }