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io_uring: remove 'fname' from io_open structure

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We only use it internally in the prep functions for both statx and
openat, so we don't need it to be persistent across the request.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2020-01-08 17:47:02 -07:00
parent c12cedf24e
commit f8748881b1
1 changed files with 6 additions and 5 deletions
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11
fs/io_uring.c
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@ -392,7 +392,6 @@ struct io_open {
union {
unsigned mask;
};
const char __user *fname;
struct filename *filename;
struct statx __user *buffer;
struct open_how how;
@ -2467,6 +2466,7 @@ static int io_fallocate(struct io_kiocb *req, struct io_kiocb **nxt,
static int io_openat_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
const char __user *fname;
int ret;
if (sqe->ioprio || sqe->buf_index)
@ -2474,10 +2474,10 @@ static int io_openat_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
req->open.dfd = READ_ONCE(sqe->fd);
req->open.how.mode = READ_ONCE(sqe->len);
req->open.fname = u64_to_user_ptr(READ_ONCE(sqe->addr));
fname = u64_to_user_ptr(READ_ONCE(sqe->addr));
req->open.how.flags = READ_ONCE(sqe->open_flags);
req->open.filename = getname(req->open.fname);
req->open.filename = getname(fname);
if (IS_ERR(req->open.filename)) {
ret = PTR_ERR(req->open.filename);
req->open.filename = NULL;
@ -2593,6 +2593,7 @@ static int io_fadvise(struct io_kiocb *req, struct io_kiocb **nxt,
static int io_statx_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
const char __user *fname;
unsigned lookup_flags;
int ret;
@ -2601,14 +2602,14 @@ static int io_statx_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
req->open.dfd = READ_ONCE(sqe->fd);
req->open.mask = READ_ONCE(sqe->len);
req->open.fname = u64_to_user_ptr(READ_ONCE(sqe->addr));
fname = u64_to_user_ptr(READ_ONCE(sqe->addr));
req->open.buffer = u64_to_user_ptr(READ_ONCE(sqe->addr2));
req->open.how.flags = READ_ONCE(sqe->statx_flags);
if (vfs_stat_set_lookup_flags(&lookup_flags, req->open.how.flags))
return -EINVAL;
req->open.filename = getname_flags(req->open.fname, lookup_flags, NULL);
req->open.filename = getname_flags(fname, lookup_flags, NULL);
if (IS_ERR(req->open.filename)) {
ret = PTR_ERR(req->open.filename);
req->open.filename = NULL;