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io_uring: convert io_create_mock_file() to FD_PREPARE()

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Link: https://patch.msgid.link/20251123-work-fd-prepare-v4-45-b6efa1706cfd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2025-11-23 17:34:03 +01:00
parent 99d4f12f17
commit 6fb1022918
1 changed files with 15 additions and 28 deletions
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43
io_uring/mock_file.c
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@@ -211,10 +211,9 @@ static int io_create_mock_file(struct io_uring_cmd *cmd, unsigned int issue_flag
const struct file_operations *fops = &io_mock_fops;
const struct io_uring_sqe *sqe = cmd->sqe;
struct io_uring_mock_create mc, __user *uarg;
struct io_mock_file *mf = NULL;
struct file *file = NULL;
struct file *file;
struct io_mock_file *mf __free(kfree) = NULL;
size_t uarg_size;
int fd = -1, ret;
/*
* It's a testing only driver that allows exercising edge cases
@@ -246,10 +245,6 @@ static int io_create_mock_file(struct io_uring_cmd *cmd, unsigned int issue_flag
if (!mf)
return -ENOMEM;
ret = fd = get_unused_fd_flags(O_RDWR | O_CLOEXEC);
if (fd < 0)
goto fail;
init_waitqueue_head(&mf->poll_wq);
mf->size = mc.file_size;
mf->rw_delay_ns = mc.rw_delay_ns;
@@ -258,33 +253,25 @@ static int io_create_mock_file(struct io_uring_cmd *cmd, unsigned int issue_flag
mf->pollable = true;
}
file = anon_inode_create_getfile("[io_uring_mock]", fops,
mf, O_RDWR | O_CLOEXEC, NULL);
if (IS_ERR(file)) {
ret = PTR_ERR(file);
goto fail;
}
FD_PREPARE(fdf, O_RDWR | O_CLOEXEC,
anon_inode_create_getfile("[io_uring_mock]", fops, mf,
O_RDWR | O_CLOEXEC, NULL));
if (fdf.err)
return fdf.err;
file->f_mode |= FMODE_READ | FMODE_CAN_READ |
FMODE_WRITE | FMODE_CAN_WRITE |
FMODE_LSEEK;
retain_and_null_ptr(mf);
file = fd_prepare_file(fdf);
file->f_mode |= FMODE_READ | FMODE_CAN_READ | FMODE_WRITE |
FMODE_CAN_WRITE | FMODE_LSEEK;
if (mc.flags & IORING_MOCK_CREATE_F_SUPPORT_NOWAIT)
file->f_mode |= FMODE_NOWAIT;
mc.out_fd = fd;
if (copy_to_user(uarg, &mc, uarg_size)) {
fput(file);
ret = -EFAULT;
goto fail;
}
mc.out_fd = fd_prepare_fd(fdf);
if (copy_to_user(uarg, &mc, uarg_size))
return -EFAULT;
fd_install(fd, file);
fd_publish(fdf);
return 0;
fail:
if (fd >= 0)
put_unused_fd(fd);
kfree(mf);
return ret;
}
static int io_probe_mock(struct io_uring_cmd *cmd)