From: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
[ Upstream commit 9fe83c43e71cdb8e5b9520bcb98706a2b3c680c8 ]
The function close_fd_get_file is explicitly a variant of
__close_fd[1]. Now that __close_fd has been renamed close_fd, rename
close_fd_get_file to be consistent with close_fd.
When __alloc_fd, __close_fd and __fd_install were introduced the
double underscore indicated that the function took a struct
files_struct parameter. The function __close_fd_get_file never has so
the naming has always been inconsistent. This just cleans things up
so there are not any lingering mentions or references __close_fd left
in the code.
[1] 80cd795630d6 ("binder: fix use-after-free due to ksys_close() during fdget()")
Link: https://lkml.kernel.org/r/20201120231441.29911-23-ebiederm@xxxxxxxxxxxx
Signed-off-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/android/binder.c | 2 +-
fs/file.c | 4 ++--
fs/io_uring.c | 2 +-
include/linux/fdtable.h | 2 +-
4 files changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -2255,7 +2255,7 @@ static void binder_deferred_fd_close(int
if (!twcb)
return;
init_task_work(&twcb->twork, binder_do_fd_close);
- __close_fd_get_file(fd, &twcb->file);
+ close_fd_get_file(fd, &twcb->file);
if (twcb->file) {
filp_close(twcb->file, current->files);
task_work_add(current, &twcb->twork, TWA_RESUME);
--- a/fs/file.c
+++ b/fs/file.c
@@ -780,11 +780,11 @@ int __close_range(unsigned fd, unsigned
}
/*
- * variant of __close_fd that gets a ref on the file for later fput.
+ * variant of close_fd that gets a ref on the file for later fput.
* The caller must ensure that filp_close() called on the file, and then
* an fput().
*/
-int __close_fd_get_file(unsigned int fd, struct file **res)
+int close_fd_get_file(unsigned int fd, struct file **res)
{
struct files_struct *files = current->files;
struct file *file;
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4270,7 +4270,7 @@ static int io_close(struct io_kiocb *req
/* might be already done during nonblock submission */
if (!close->put_file) {
- ret = __close_fd_get_file(close->fd, &close->put_file);
+ ret = close_fd_get_file(close->fd, &close->put_file);
if (ret < 0)
return (ret == -ENOENT) ? -EBADF : ret;
}
--- a/include/linux/fdtable.h
+++ b/include/linux/fdtable.h
@@ -123,7 +123,7 @@ extern void __fd_install(struct files_st
extern int __close_fd(struct files_struct *files,
unsigned int fd);
extern int __close_range(unsigned int fd, unsigned int max_fd, unsigned int flags);
-extern int __close_fd_get_file(unsigned int fd, struct file **res);
+extern int close_fd_get_file(unsigned int fd, struct file **res);
extern int unshare_fd(unsigned long unshare_flags, unsigned int max_fds,
struct files_struct **new_fdp);
