2021-04-10 14:42:03 +08:00
|
|
|
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
/*
|
|
|
|
* Copyright (c) 2011-2014, Intel Corporation.
|
|
|
|
* Copyright (c) 2017-2021 Christoph Hellwig.
|
|
|
|
*/
|
|
|
|
#include <linux/ptrace.h> /* for force_successful_syscall_return */
|
|
|
|
#include <linux/nvme_ioctl.h>
|
|
|
|
#include "nvme.h"
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Convert integer values from ioctl structures to user pointers, silently
|
|
|
|
* ignoring the upper bits in the compat case to match behaviour of 32-bit
|
|
|
|
* kernels.
|
|
|
|
*/
|
|
|
|
static void __user *nvme_to_user_ptr(uintptr_t ptrval)
|
|
|
|
{
|
|
|
|
if (in_compat_syscall())
|
|
|
|
ptrval = (compat_uptr_t)ptrval;
|
|
|
|
return (void __user *)ptrval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *nvme_add_user_metadata(struct bio *bio, void __user *ubuf,
|
|
|
|
unsigned len, u32 seed, bool write)
|
|
|
|
{
|
|
|
|
struct bio_integrity_payload *bip;
|
|
|
|
int ret = -ENOMEM;
|
|
|
|
void *buf;
|
|
|
|
|
|
|
|
buf = kmalloc(len, GFP_KERNEL);
|
|
|
|
if (!buf)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
ret = -EFAULT;
|
|
|
|
if (write && copy_from_user(buf, ubuf, len))
|
|
|
|
goto out_free_meta;
|
|
|
|
|
|
|
|
bip = bio_integrity_alloc(bio, GFP_KERNEL, 1);
|
|
|
|
if (IS_ERR(bip)) {
|
|
|
|
ret = PTR_ERR(bip);
|
|
|
|
goto out_free_meta;
|
|
|
|
}
|
|
|
|
|
|
|
|
bip->bip_iter.bi_size = len;
|
|
|
|
bip->bip_iter.bi_sector = seed;
|
|
|
|
ret = bio_integrity_add_page(bio, virt_to_page(buf), len,
|
|
|
|
offset_in_page(buf));
|
|
|
|
if (ret == len)
|
|
|
|
return buf;
|
|
|
|
ret = -ENOMEM;
|
|
|
|
out_free_meta:
|
|
|
|
kfree(buf);
|
|
|
|
out:
|
|
|
|
return ERR_PTR(ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int nvme_submit_user_cmd(struct request_queue *q,
|
|
|
|
struct nvme_command *cmd, void __user *ubuffer,
|
|
|
|
unsigned bufflen, void __user *meta_buffer, unsigned meta_len,
|
|
|
|
u32 meta_seed, u64 *result, unsigned timeout)
|
|
|
|
{
|
|
|
|
bool write = nvme_is_write(cmd);
|
|
|
|
struct nvme_ns *ns = q->queuedata;
|
|
|
|
struct block_device *bdev = ns ? ns->disk->part0 : NULL;
|
|
|
|
struct request *req;
|
|
|
|
struct bio *bio = NULL;
|
|
|
|
void *meta = NULL;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
req = nvme_alloc_request(q, cmd, 0);
|
|
|
|
if (IS_ERR(req))
|
|
|
|
return PTR_ERR(req);
|
|
|
|
|
|
|
|
if (timeout)
|
|
|
|
req->timeout = timeout;
|
|
|
|
nvme_req(req)->flags |= NVME_REQ_USERCMD;
|
|
|
|
|
|
|
|
if (ubuffer && bufflen) {
|
|
|
|
ret = blk_rq_map_user(q, req, NULL, ubuffer, bufflen,
|
|
|
|
GFP_KERNEL);
|
|
|
|
if (ret)
|
|
|
|
goto out;
|
|
|
|
bio = req->bio;
|
|
|
|
if (bdev)
|
|
|
|
bio_set_dev(bio, bdev);
|
|
|
|
if (bdev && meta_buffer && meta_len) {
|
|
|
|
meta = nvme_add_user_metadata(bio, meta_buffer, meta_len,
|
|
|
|
meta_seed, write);
|
|
|
|
if (IS_ERR(meta)) {
|
|
|
|
ret = PTR_ERR(meta);
|
|
|
|
goto out_unmap;
|
|
|
|
}
|
|
|
|
req->cmd_flags |= REQ_INTEGRITY;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
nvme_execute_passthru_rq(req);
|
|
|
|
if (nvme_req(req)->flags & NVME_REQ_CANCELLED)
|
|
|
|
ret = -EINTR;
|
|
|
|
else
|
|
|
|
ret = nvme_req(req)->status;
|
|
|
|
if (result)
|
|
|
|
*result = le64_to_cpu(nvme_req(req)->result.u64);
|
|
|
|
if (meta && !ret && !write) {
|
|
|
|
if (copy_to_user(meta_buffer, meta, meta_len))
|
|
|
|
ret = -EFAULT;
|
|
|
|
}
|
|
|
|
kfree(meta);
|
|
|
|
out_unmap:
|
|
|
|
if (bio)
|
|
|
|
blk_rq_unmap_user(bio);
|
|
|
|
out:
|
|
|
|
blk_mq_free_request(req);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
|
|
|
|
{
|
|
|
|
struct nvme_user_io io;
|
|
|
|
struct nvme_command c;
|
|
|
|
unsigned length, meta_len;
|
|
|
|
void __user *metadata;
|
|
|
|
|
|
|
|
if (copy_from_user(&io, uio, sizeof(io)))
|
|
|
|
return -EFAULT;
|
|
|
|
if (io.flags)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
switch (io.opcode) {
|
|
|
|
case nvme_cmd_write:
|
|
|
|
case nvme_cmd_read:
|
|
|
|
case nvme_cmd_compare:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
length = (io.nblocks + 1) << ns->lba_shift;
|
|
|
|
|
|
|
|
if ((io.control & NVME_RW_PRINFO_PRACT) &&
|
|
|
|
ns->ms == sizeof(struct t10_pi_tuple)) {
|
|
|
|
/*
|
|
|
|
* Protection information is stripped/inserted by the
|
|
|
|
* controller.
|
|
|
|
*/
|
|
|
|
if (nvme_to_user_ptr(io.metadata))
|
|
|
|
return -EINVAL;
|
|
|
|
meta_len = 0;
|
|
|
|
metadata = NULL;
|
|
|
|
} else {
|
|
|
|
meta_len = (io.nblocks + 1) * ns->ms;
|
|
|
|
metadata = nvme_to_user_ptr(io.metadata);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ns->features & NVME_NS_EXT_LBAS) {
|
|
|
|
length += meta_len;
|
|
|
|
meta_len = 0;
|
|
|
|
} else if (meta_len) {
|
|
|
|
if ((io.metadata & 3) || !io.metadata)
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
memset(&c, 0, sizeof(c));
|
|
|
|
c.rw.opcode = io.opcode;
|
|
|
|
c.rw.flags = io.flags;
|
|
|
|
c.rw.nsid = cpu_to_le32(ns->head->ns_id);
|
|
|
|
c.rw.slba = cpu_to_le64(io.slba);
|
|
|
|
c.rw.length = cpu_to_le16(io.nblocks);
|
|
|
|
c.rw.control = cpu_to_le16(io.control);
|
|
|
|
c.rw.dsmgmt = cpu_to_le32(io.dsmgmt);
|
|
|
|
c.rw.reftag = cpu_to_le32(io.reftag);
|
|
|
|
c.rw.apptag = cpu_to_le16(io.apptag);
|
|
|
|
c.rw.appmask = cpu_to_le16(io.appmask);
|
|
|
|
|
|
|
|
return nvme_submit_user_cmd(ns->queue, &c,
|
|
|
|
nvme_to_user_ptr(io.addr), length,
|
|
|
|
metadata, meta_len, lower_32_bits(io.slba), NULL, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
|
|
|
|
struct nvme_passthru_cmd __user *ucmd)
|
|
|
|
{
|
|
|
|
struct nvme_passthru_cmd cmd;
|
|
|
|
struct nvme_command c;
|
|
|
|
unsigned timeout = 0;
|
|
|
|
u64 result;
|
|
|
|
int status;
|
|
|
|
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
|
|
return -EACCES;
|
|
|
|
if (copy_from_user(&cmd, ucmd, sizeof(cmd)))
|
|
|
|
return -EFAULT;
|
|
|
|
if (cmd.flags)
|
|
|
|
return -EINVAL;
|
|
|
|
if (ns && cmd.nsid != ns->head->ns_id) {
|
|
|
|
dev_err(ctrl->device,
|
|
|
|
"%s: nsid (%u) in cmd does not match nsid (%u) of namespace\n",
|
|
|
|
current->comm, cmd.nsid, ns->head->ns_id);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
memset(&c, 0, sizeof(c));
|
|
|
|
c.common.opcode = cmd.opcode;
|
|
|
|
c.common.flags = cmd.flags;
|
|
|
|
c.common.nsid = cpu_to_le32(cmd.nsid);
|
|
|
|
c.common.cdw2[0] = cpu_to_le32(cmd.cdw2);
|
|
|
|
c.common.cdw2[1] = cpu_to_le32(cmd.cdw3);
|
|
|
|
c.common.cdw10 = cpu_to_le32(cmd.cdw10);
|
|
|
|
c.common.cdw11 = cpu_to_le32(cmd.cdw11);
|
|
|
|
c.common.cdw12 = cpu_to_le32(cmd.cdw12);
|
|
|
|
c.common.cdw13 = cpu_to_le32(cmd.cdw13);
|
|
|
|
c.common.cdw14 = cpu_to_le32(cmd.cdw14);
|
|
|
|
c.common.cdw15 = cpu_to_le32(cmd.cdw15);
|
|
|
|
|
|
|
|
if (cmd.timeout_ms)
|
|
|
|
timeout = msecs_to_jiffies(cmd.timeout_ms);
|
|
|
|
|
|
|
|
status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c,
|
|
|
|
nvme_to_user_ptr(cmd.addr), cmd.data_len,
|
|
|
|
nvme_to_user_ptr(cmd.metadata), cmd.metadata_len,
|
|
|
|
0, &result, timeout);
|
|
|
|
|
|
|
|
if (status >= 0) {
|
|
|
|
if (put_user(result, &ucmd->result))
|
|
|
|
return -EFAULT;
|
|
|
|
}
|
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int nvme_user_cmd64(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
|
|
|
|
struct nvme_passthru_cmd64 __user *ucmd)
|
|
|
|
{
|
|
|
|
struct nvme_passthru_cmd64 cmd;
|
|
|
|
struct nvme_command c;
|
|
|
|
unsigned timeout = 0;
|
|
|
|
int status;
|
|
|
|
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
|
|
return -EACCES;
|
|
|
|
if (copy_from_user(&cmd, ucmd, sizeof(cmd)))
|
|
|
|
return -EFAULT;
|
|
|
|
if (cmd.flags)
|
|
|
|
return -EINVAL;
|
|
|
|
if (ns && cmd.nsid != ns->head->ns_id) {
|
|
|
|
dev_err(ctrl->device,
|
|
|
|
"%s: nsid (%u) in cmd does not match nsid (%u) of namespace\n",
|
|
|
|
current->comm, cmd.nsid, ns->head->ns_id);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
memset(&c, 0, sizeof(c));
|
|
|
|
c.common.opcode = cmd.opcode;
|
|
|
|
c.common.flags = cmd.flags;
|
|
|
|
c.common.nsid = cpu_to_le32(cmd.nsid);
|
|
|
|
c.common.cdw2[0] = cpu_to_le32(cmd.cdw2);
|
|
|
|
c.common.cdw2[1] = cpu_to_le32(cmd.cdw3);
|
|
|
|
c.common.cdw10 = cpu_to_le32(cmd.cdw10);
|
|
|
|
c.common.cdw11 = cpu_to_le32(cmd.cdw11);
|
|
|
|
c.common.cdw12 = cpu_to_le32(cmd.cdw12);
|
|
|
|
c.common.cdw13 = cpu_to_le32(cmd.cdw13);
|
|
|
|
c.common.cdw14 = cpu_to_le32(cmd.cdw14);
|
|
|
|
c.common.cdw15 = cpu_to_le32(cmd.cdw15);
|
|
|
|
|
|
|
|
if (cmd.timeout_ms)
|
|
|
|
timeout = msecs_to_jiffies(cmd.timeout_ms);
|
|
|
|
|
|
|
|
status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c,
|
|
|
|
nvme_to_user_ptr(cmd.addr), cmd.data_len,
|
|
|
|
nvme_to_user_ptr(cmd.metadata), cmd.metadata_len,
|
|
|
|
0, &cmd.result, timeout);
|
|
|
|
|
|
|
|
if (status >= 0) {
|
|
|
|
if (put_user(cmd.result, &ucmd->result))
|
|
|
|
return -EFAULT;
|
|
|
|
}
|
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool is_ctrl_ioctl(unsigned int cmd)
|
|
|
|
{
|
|
|
|
if (cmd == NVME_IOCTL_ADMIN_CMD || cmd == NVME_IOCTL_ADMIN64_CMD)
|
|
|
|
return true;
|
|
|
|
if (is_sed_ioctl(cmd))
|
|
|
|
return true;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int nvme_ctrl_ioctl(struct nvme_ctrl *ctrl, unsigned int cmd,
|
|
|
|
void __user *argp)
|
|
|
|
{
|
|
|
|
switch (cmd) {
|
|
|
|
case NVME_IOCTL_ADMIN_CMD:
|
|
|
|
return nvme_user_cmd(ctrl, NULL, argp);
|
|
|
|
case NVME_IOCTL_ADMIN64_CMD:
|
|
|
|
return nvme_user_cmd64(ctrl, NULL, argp);
|
|
|
|
default:
|
|
|
|
return sed_ioctl(ctrl->opal_dev, cmd, argp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef COMPAT_FOR_U64_ALIGNMENT
|
|
|
|
struct nvme_user_io32 {
|
|
|
|
__u8 opcode;
|
|
|
|
__u8 flags;
|
|
|
|
__u16 control;
|
|
|
|
__u16 nblocks;
|
|
|
|
__u16 rsvd;
|
|
|
|
__u64 metadata;
|
|
|
|
__u64 addr;
|
|
|
|
__u64 slba;
|
|
|
|
__u32 dsmgmt;
|
|
|
|
__u32 reftag;
|
|
|
|
__u16 apptag;
|
|
|
|
__u16 appmask;
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
#define NVME_IOCTL_SUBMIT_IO32 _IOW('N', 0x42, struct nvme_user_io32)
|
|
|
|
#endif /* COMPAT_FOR_U64_ALIGNMENT */
|
|
|
|
|
|
|
|
static int nvme_ns_ioctl(struct nvme_ns *ns, unsigned int cmd,
|
|
|
|
void __user *argp)
|
|
|
|
{
|
|
|
|
switch (cmd) {
|
|
|
|
case NVME_IOCTL_ID:
|
|
|
|
force_successful_syscall_return();
|
|
|
|
return ns->head->ns_id;
|
|
|
|
case NVME_IOCTL_IO_CMD:
|
|
|
|
return nvme_user_cmd(ns->ctrl, ns, argp);
|
|
|
|
/*
|
|
|
|
* struct nvme_user_io can have different padding on some 32-bit ABIs.
|
|
|
|
* Just accept the compat version as all fields that are used are the
|
|
|
|
* same size and at the same offset.
|
|
|
|
*/
|
|
|
|
#ifdef COMPAT_FOR_U64_ALIGNMENT
|
|
|
|
case NVME_IOCTL_SUBMIT_IO32:
|
|
|
|
#endif
|
|
|
|
case NVME_IOCTL_SUBMIT_IO:
|
|
|
|
return nvme_submit_io(ns, argp);
|
|
|
|
case NVME_IOCTL_IO64_CMD:
|
|
|
|
return nvme_user_cmd64(ns->ctrl, ns, argp);
|
|
|
|
default:
|
|
|
|
if (!ns->ndev)
|
|
|
|
return -ENOTTY;
|
|
|
|
return nvme_nvm_ioctl(ns, cmd, argp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-04-21 15:45:04 +08:00
|
|
|
static int __nvme_ioctl(struct nvme_ns *ns, unsigned int cmd, void __user *arg)
|
|
|
|
{
|
|
|
|
if (is_ctrl_ioctl(cmd))
|
|
|
|
return nvme_ctrl_ioctl(ns->ctrl, cmd, arg);
|
|
|
|
return nvme_ns_ioctl(ns, cmd, arg);
|
|
|
|
}
|
|
|
|
|
2021-04-10 14:42:03 +08:00
|
|
|
int nvme_ioctl(struct block_device *bdev, fmode_t mode,
|
|
|
|
unsigned int cmd, unsigned long arg)
|
|
|
|
{
|
|
|
|
struct nvme_ns *ns = bdev->bd_disk->private_data;
|
|
|
|
|
2021-04-21 15:45:04 +08:00
|
|
|
return __nvme_ioctl(ns, cmd, (void __user *)arg);
|
|
|
|
}
|
|
|
|
|
|
|
|
long nvme_ns_chr_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
|
|
|
{
|
|
|
|
struct nvme_ns *ns =
|
|
|
|
container_of(file_inode(file)->i_cdev, struct nvme_ns, cdev);
|
|
|
|
|
|
|
|
return __nvme_ioctl(ns, cmd, (void __user *)arg);
|
2021-04-10 14:42:03 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_NVME_MULTIPATH
|
2021-04-22 16:04:07 +08:00
|
|
|
static int nvme_ns_head_ctrl_ioctl(struct nvme_ns *ns, unsigned int cmd,
|
|
|
|
void __user *argp, struct nvme_ns_head *head, int srcu_idx)
|
2021-04-10 14:42:03 +08:00
|
|
|
{
|
2021-04-22 16:04:07 +08:00
|
|
|
struct nvme_ctrl *ctrl = ns->ctrl;
|
2021-04-10 14:42:03 +08:00
|
|
|
int ret;
|
|
|
|
|
2021-04-22 16:04:07 +08:00
|
|
|
nvme_get_ctrl(ns->ctrl);
|
|
|
|
nvme_put_ns_from_disk(head, srcu_idx);
|
|
|
|
ret = nvme_ctrl_ioctl(ns->ctrl, cmd, argp);
|
2021-04-10 14:42:03 +08:00
|
|
|
|
2021-04-22 16:04:07 +08:00
|
|
|
nvme_put_ctrl(ctrl);
|
2021-04-10 14:42:03 +08:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int nvme_ns_head_ioctl(struct block_device *bdev, fmode_t mode,
|
|
|
|
unsigned int cmd, unsigned long arg)
|
|
|
|
{
|
2021-04-22 16:04:07 +08:00
|
|
|
struct nvme_ns_head *head = NULL;
|
2021-04-21 15:45:04 +08:00
|
|
|
void __user *argp = (void __user *)arg;
|
2021-04-22 16:04:07 +08:00
|
|
|
struct nvme_ns *ns;
|
|
|
|
int srcu_idx, ret;
|
|
|
|
|
|
|
|
ns = nvme_get_ns_from_disk(bdev->bd_disk, &head, &srcu_idx);
|
|
|
|
if (unlikely(!ns))
|
|
|
|
return -EWOULDBLOCK;
|
2021-04-21 15:45:04 +08:00
|
|
|
|
2021-04-22 16:04:07 +08:00
|
|
|
/*
|
|
|
|
* Handle ioctls that apply to the controller instead of the namespace
|
|
|
|
* seperately and drop the ns SRCU reference early. This avoids a
|
|
|
|
* deadlock when deleting namespaces using the passthrough interface.
|
|
|
|
*/
|
2021-04-21 15:45:04 +08:00
|
|
|
if (is_ctrl_ioctl(cmd))
|
2021-04-22 16:04:07 +08:00
|
|
|
ret = nvme_ns_head_ctrl_ioctl(ns, cmd, argp, head, srcu_idx);
|
|
|
|
else {
|
|
|
|
ret = nvme_ns_ioctl(ns, cmd, argp);
|
|
|
|
nvme_put_ns_from_disk(head, srcu_idx);
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
2021-04-21 15:45:04 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
long nvme_ns_head_chr_ioctl(struct file *file, unsigned int cmd,
|
|
|
|
unsigned long arg)
|
|
|
|
{
|
|
|
|
struct cdev *cdev = file_inode(file)->i_cdev;
|
|
|
|
struct nvme_ns_head *head =
|
|
|
|
container_of(cdev, struct nvme_ns_head, cdev);
|
|
|
|
void __user *argp = (void __user *)arg;
|
2021-04-22 16:04:07 +08:00
|
|
|
struct nvme_ns *ns;
|
|
|
|
int srcu_idx, ret;
|
|
|
|
|
|
|
|
srcu_idx = srcu_read_lock(&head->srcu);
|
|
|
|
ns = nvme_find_path(head);
|
|
|
|
if (!ns) {
|
|
|
|
srcu_read_unlock(&head->srcu, srcu_idx);
|
|
|
|
return -EWOULDBLOCK;
|
|
|
|
}
|
2021-04-10 14:42:03 +08:00
|
|
|
|
|
|
|
if (is_ctrl_ioctl(cmd))
|
2021-04-22 16:04:07 +08:00
|
|
|
return nvme_ns_head_ctrl_ioctl(ns, cmd, argp, head, srcu_idx);
|
|
|
|
|
|
|
|
ret = nvme_ns_ioctl(ns, cmd, argp);
|
|
|
|
nvme_put_ns_from_disk(head, srcu_idx);
|
|
|
|
|
|
|
|
return ret;
|
2021-04-10 14:42:03 +08:00
|
|
|
}
|
|
|
|
#endif /* CONFIG_NVME_MULTIPATH */
|
|
|
|
|
|
|
|
static int nvme_dev_user_cmd(struct nvme_ctrl *ctrl, void __user *argp)
|
|
|
|
{
|
|
|
|
struct nvme_ns *ns;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
down_read(&ctrl->namespaces_rwsem);
|
|
|
|
if (list_empty(&ctrl->namespaces)) {
|
|
|
|
ret = -ENOTTY;
|
|
|
|
goto out_unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
ns = list_first_entry(&ctrl->namespaces, struct nvme_ns, list);
|
|
|
|
if (ns != list_last_entry(&ctrl->namespaces, struct nvme_ns, list)) {
|
|
|
|
dev_warn(ctrl->device,
|
|
|
|
"NVME_IOCTL_IO_CMD not supported when multiple namespaces present!\n");
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto out_unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
dev_warn(ctrl->device,
|
|
|
|
"using deprecated NVME_IOCTL_IO_CMD ioctl on the char device!\n");
|
|
|
|
kref_get(&ns->kref);
|
|
|
|
up_read(&ctrl->namespaces_rwsem);
|
|
|
|
|
|
|
|
ret = nvme_user_cmd(ctrl, ns, argp);
|
|
|
|
nvme_put_ns(ns);
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
out_unlock:
|
|
|
|
up_read(&ctrl->namespaces_rwsem);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
long nvme_dev_ioctl(struct file *file, unsigned int cmd,
|
|
|
|
unsigned long arg)
|
|
|
|
{
|
|
|
|
struct nvme_ctrl *ctrl = file->private_data;
|
|
|
|
void __user *argp = (void __user *)arg;
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case NVME_IOCTL_ADMIN_CMD:
|
|
|
|
return nvme_user_cmd(ctrl, NULL, argp);
|
|
|
|
case NVME_IOCTL_ADMIN64_CMD:
|
|
|
|
return nvme_user_cmd64(ctrl, NULL, argp);
|
|
|
|
case NVME_IOCTL_IO_CMD:
|
|
|
|
return nvme_dev_user_cmd(ctrl, argp);
|
|
|
|
case NVME_IOCTL_RESET:
|
|
|
|
dev_warn(ctrl->device, "resetting controller\n");
|
|
|
|
return nvme_reset_ctrl_sync(ctrl);
|
|
|
|
case NVME_IOCTL_SUBSYS_RESET:
|
|
|
|
return nvme_reset_subsystem(ctrl);
|
|
|
|
case NVME_IOCTL_RESCAN:
|
|
|
|
nvme_queue_scan(ctrl);
|
|
|
|
return 0;
|
|
|
|
default:
|
|
|
|
return -ENOTTY;
|
|
|
|
}
|
|
|
|
}
|