io_uring: add io_statx structure

Separate statx data from open in io_kiocb. No functional changes.

Signed-off-by: Bijan Mottahedeh <bijan.mottahedeh@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bijan Mottahedeh 2020-05-22 21:31:16 -07:00 коммит произвёл Jens Axboe
Родитель 0bf0eefdab
Коммит 1d9e128803
1 изменённых файлов: 22 добавлений и 16 удалений

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@ -425,11 +425,7 @@ struct io_sr_msg {
struct io_open {
struct file *file;
int dfd;
union {
unsigned mask;
};
struct filename *filename;
struct statx __user *buffer;
struct open_how how;
unsigned long nofile;
};
@ -481,6 +477,15 @@ struct io_provide_buf {
__u16 bid;
};
struct io_statx {
struct file *file;
int dfd;
unsigned int mask;
unsigned int flags;
struct filename *filename;
struct statx __user *buffer;
};
struct io_async_connect {
struct sockaddr_storage address;
};
@ -622,6 +627,7 @@ struct io_kiocb {
struct io_epoll epoll;
struct io_splice splice;
struct io_provide_buf pbuf;
struct io_statx statx;
};
struct io_async_ctx *io;
@ -3381,19 +3387,19 @@ static int io_statx_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
if (req->flags & REQ_F_NEED_CLEANUP)
return 0;
req->open.dfd = READ_ONCE(sqe->fd);
req->open.mask = READ_ONCE(sqe->len);
req->statx.dfd = READ_ONCE(sqe->fd);
req->statx.mask = READ_ONCE(sqe->len);
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);
req->statx.buffer = u64_to_user_ptr(READ_ONCE(sqe->addr2));
req->statx.flags = READ_ONCE(sqe->statx_flags);
if (vfs_stat_set_lookup_flags(&lookup_flags, req->open.how.flags))
if (vfs_stat_set_lookup_flags(&lookup_flags, req->statx.flags))
return -EINVAL;
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;
req->statx.filename = getname_flags(fname, lookup_flags, NULL);
if (IS_ERR(req->statx.filename)) {
ret = PTR_ERR(req->statx.filename);
req->statx.filename = NULL;
return ret;
}
@ -3403,7 +3409,7 @@ static int io_statx_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
static int io_statx(struct io_kiocb *req, bool force_nonblock)
{
struct io_open *ctx = &req->open;
struct io_statx *ctx = &req->statx;
unsigned lookup_flags;
struct path path;
struct kstat stat;
@ -3416,7 +3422,7 @@ static int io_statx(struct io_kiocb *req, bool force_nonblock)
return -EAGAIN;
}
if (vfs_stat_set_lookup_flags(&lookup_flags, ctx->how.flags))
if (vfs_stat_set_lookup_flags(&lookup_flags, ctx->flags))
return -EINVAL;
retry:
@ -3428,7 +3434,7 @@ retry:
if (ret)
goto err;
ret = vfs_getattr(&path, &stat, ctx->mask, ctx->how.flags);
ret = vfs_getattr(&path, &stat, ctx->mask, ctx->flags);
path_put(&path);
if (retry_estale(ret, lookup_flags)) {
lookup_flags |= LOOKUP_REVAL;