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ipmi: Disable sysfs access and requests in maintenance mode

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If the driver goes into any maintenance mode, disable sysfs access until
it is done.

If the driver goes into reset maintenance mode, disable all messages
until it is done.

Signed-off-by: Corey Minyard <corey@minyard.net>
Tested-by: Frederick Lawler <fred@cloudflare.com>
This commit is contained in:
Corey Minyard
2025-08-07 16:05:24 -05:00
parent e5feb030d9
commit 30f6c9d545
1 changed files with 11 additions and 0 deletions
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11
drivers/char/ipmi/ipmi_msghandler.c
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@@ -2319,6 +2319,11 @@ static int i_ipmi_request(struct ipmi_user *user,
if (!run_to_completion)
mutex_lock(&intf->users_mutex);
if (intf->maintenance_mode_state == IPMI_MAINTENANCE_MODE_STATE_RESET) {
/* No messages while the BMC is in reset. */
rv = -EBUSY;
goto out_err;
}
if (intf->in_shutdown) {
rv = -ENODEV;
goto out_err;
@@ -2615,6 +2620,12 @@ retry_bmc_lock:
(bmc->dyn_id_set && time_is_after_jiffies(bmc->dyn_id_expiry)))
goto out_noprocessing;
/* Don't allow sysfs access when in maintenance mode. */
if (intf->maintenance_mode_state) {
rv = -EBUSY;
goto out_noprocessing;
}
prev_guid_set = bmc->dyn_guid_set;
__get_guid(intf);