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// SPDX-License-Identifier: LGPL-2.1-or-later
#include <stdio.h>
#include <stdlib.h>
#include "private.h"
#define PATH_UUID_IBM "/proc/device-tree/ibm,partition-uuid"
#define PATH_SYSFS_BLOCK "/sys/block"
#define PATH_SYSFS_SLOTS "/sys/bus/pci/slots"
#define PATH_SYSFS_NVME_SUBSYSTEM "/sys/class/nvme-subsystem"
#define PATH_SYSFS_NVME "/sys/class/nvme"
#define PATH_DMI_ENTRIES "/sys/firmware/dmi/entries"
static const char *make_sysfs_dir(const char *path)
{
char *basepath = getenv("LIBNVME_SYSFS_PATH");
char *str;
if (!basepath)
return path;
if (asprintf(&str, "%s%s", basepath, path) < 0)
return NULL;
return str;
}
const char *nvme_subsys_sysfs_dir(void)
{
static const char *str;
if (str)
return str;
return str = make_sysfs_dir(PATH_SYSFS_NVME_SUBSYSTEM);
}
const char *nvme_ctrl_sysfs_dir(void)
{
static const char *str;
if (str)
return str;
return str = make_sysfs_dir(PATH_SYSFS_NVME);
}
const char *nvme_ns_sysfs_dir(void)
{
static const char *str;
if (str)
return str;
return str = make_sysfs_dir(PATH_SYSFS_BLOCK);
}
const char *nvme_slots_sysfs_dir(void)
{
static const char *str;
if (str)
return str;
return str = make_sysfs_dir(PATH_SYSFS_SLOTS);
}
const char *nvme_uuid_ibm_filename(void)
{
static const char *str;
if (str)
return str;
return str = make_sysfs_dir(PATH_UUID_IBM);
}
const char *nvme_dmi_entries_dir(void)
{
static const char *str;
if (str)
return str;
return str = make_sysfs_dir(PATH_DMI_ENTRIES);
}
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