Adding sysfs notification for when overwrite has completed to allow
user monitoring app to be aware of overwrite completion status.
Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
drivers/acpi/nfit/core.c | 5 +++++
drivers/nvdimm/dimm_devs.c | 10 ++++++++++
drivers/nvdimm/nd-core.h | 1 +
drivers/nvdimm/security.c | 2 ++
include/linux/libnvdimm.h | 1 +
5 files changed, 19 insertions(+)
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index de4e00059277..3e6c7b653872 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -2033,6 +2033,11 @@ static int acpi_nfit_register_dimms(struct
acpi_nfit_desc *acpi_desc)
if (!nvdimm)
continue;
+ rc = nvdimm_setup_security_events(nvdimm);
+ if (rc < 0)
+ dev_warn(acpi_desc->dev,
+ "no security event setup failed\n");
+
nfit_kernfs = sysfs_get_dirent(nvdimm_kobj(nvdimm)->sd, "nfit");
if (nfit_kernfs)
nfit_mem->flags_attr = sysfs_get_dirent(nfit_kernfs,
diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c
index b613c131bfb9..39e40074b5df 100644
--- a/drivers/nvdimm/dimm_devs.c
+++ b/drivers/nvdimm/dimm_devs.c
@@ -508,6 +508,16 @@ struct nvdimm *__nvdimm_create(struct nvdimm_bus
*nvdimm_bus, void *provider_dat
}
EXPORT_SYMBOL_GPL(__nvdimm_create);
+int nvdimm_setup_security_events(struct nvdimm *nvdimm)
+{
+ nvdimm->overwrite_state = sysfs_get_dirent(nvdimm->dev.kobj.sd,
+ "security");
+ if (!nvdimm->overwrite_state)
+ return -ENODEV;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(nvdimm_setup_security_events);
+
int alias_dpa_busy(struct device *dev, void *data)
{
resource_size_t map_end, blk_start, new;
diff --git a/drivers/nvdimm/nd-core.h b/drivers/nvdimm/nd-core.h
index 20a8216c503d..b96e1b10e3eb 100644
--- a/drivers/nvdimm/nd-core.h
+++ b/drivers/nvdimm/nd-core.h
@@ -49,6 +49,7 @@ struct nvdimm {
struct mutex sec_mutex;
struct delayed_work dwork;
unsigned int overwrite_tmo;
+ struct kernfs_node *overwrite_state;
};
/**
diff --git a/drivers/nvdimm/security.c b/drivers/nvdimm/security.c
index 725acd211114..f5ba633545b7 100644
--- a/drivers/nvdimm/security.c
+++ b/drivers/nvdimm/security.c
@@ -122,6 +122,8 @@ void nvdimm_overwrite_query(struct work_struct *work)
else
dev_info(&nvdimm->dev, "Overwrite completed\n");
+ if (nvdimm->overwrite_state)
+ sysfs_notify_dirent(nvdimm->overwrite_state);
nvdimm->overwrite_tmo = 0;
nvdimm_clear_security_busy(nvdimm);
nvdimm_security_get_state(nvdimm);
diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index 479421ce62c0..c3c5a1c6b1b7 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -227,6 +227,7 @@ static inline struct nvdimm *nvdimm_create(struct
nvdimm_bus *nvdimm_bus,
cmd_mask, num_flush, flush_wpq, NULL, NULL);
}
+int nvdimm_setup_security_events(struct nvdimm *nvdimm);
const struct nd_cmd_desc *nd_cmd_dimm_desc(int cmd);
const struct nd_cmd_desc *nd_cmd_bus_desc(int cmd);
u32 nd_cmd_in_size(struct nvdimm *nvdimm, int cmd,
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