LogicalFile: use udev to fill info about the filesystem

1 files changed, 42 insertions, 0 deletions

diff --git a/src/logicalfile/file.c b/src/logicalfile/file.c
index c17f0fc..64b7d52 100644
--- a/src/logicalfile/file.c
+++ b/src/logicalfile/file.c
@@ -95,6 +95,48 @@ int get_class_from_path(const char *path, char *fileclass)
     return rc;
 }
 
+int get_fsname_from_stat(const struct stat *sb, char **fname)
+{
+    static struct udev *udev_ctx = NULL;
+    struct udev_device *udev_dev;
+    const char *dev_name;
+    int rc = 0;
+
+    if (!udev_ctx) {
+        udev_ctx = udev_new();
+        if (!udev_ctx) {
+            rc = -1;
+            goto err;
+        }
+    }
+
+    char dev_id[16];
+    snprintf(dev_id, 16, "b%u:%u", major(sb->st_dev), minor(sb->st_dev));
+
+    udev_dev = udev_device_new_from_device_id(udev_ctx, dev_id);
+    if ((dev_name = udev_device_get_property_value(udev_dev, "ID_FS_UUID_ENC"))) {
+        rc = asprintf(fname, "UUID=%s", dev_name);
+    } else if ((dev_name = udev_device_get_property_value(udev_dev, "DEVNAME"))) {
+        rc = asprintf(fname, "DEVICE=%s", dev_name);
+    } else {
+        rc = asprintf(fname, "Unknown");
+    }
+err:
+    return rc;
+}
+
+int get_fsname_from_path(const char *path, char **fsname)
+{
+    struct stat sb;
+    int rc;
+
+    rc = lstat(path, &sb);
+    if (rc == 0) {
+        rc = get_fsname_from_stat(&sb, fsname);
+    }
+    return rc;
+}
+
 void _dump_objectpath(const CMPIObjectPath *o)
 {
     printf("OP: %s\n", CMGetCharsPtr(o->ft->toString(o, NULL), NULL));