chiark / gitweb /
[PATCH] start working on label support, and fix some segfaults for block devices.
authorgreg@kroah.com <greg@kroah.com>
Thu, 24 Jul 2003 14:27:06 +0000 (10:27 -0400)
committerGreg KH <gregkh@suse.de>
Wed, 27 Apr 2005 04:01:40 +0000 (21:01 -0700)
namedev.c

index d5f83c5..b824368 100644 (file)
--- a/namedev.c
+++ b/namedev.c
@@ -421,23 +421,101 @@ static int get_attr(struct sysfs_class_device *class_dev, struct device_attr *at
        int retval = 0;
        int found;
 
-       dbg("class_dev->sysdevice->directory->path = '%s'", class_dev->sysdevice->directory->path);
-       dbg("class_dev->sysdevice->bus_id = '%s'", class_dev->sysdevice->bus_id);
+       if (class_dev->sysdevice) {
+               dbg("class_dev->sysdevice->directory->path = '%s'", class_dev->sysdevice->directory->path);
+               dbg("class_dev->sysdevice->bus_id = '%s'", class_dev->sysdevice->bus_id);
+       } else {
+               dbg("class_dev->name = '%s'", class_dev->name);
+       }
        list_for_each(tmp, &config_device_list) {
                struct config_device *dev = list_entry(tmp, struct config_device, node);
                switch (dev->type) {
                case LABEL:
-                       dbg("LABEL name = '%s', bus = '%s', sysfs_file = '%s', sysfs_value = '%s'"
+                       {
+                       char *temp;
+
+                       dbg("LABEL: match file '%s' with value '%s'", dev->sysfs_file, dev->sysfs_value);
+                       /* try to find the attribute in the class device directory */
+                       temp = sysfs_get_value_from_attributes(class_dev->directory->attributes, dev->sysfs_file);
+                       if (temp)
+                               goto label_found;
+
+                       /* look in the class device device directory if present */
+                       if (class_dev->sysdevice) {
+                               temp = sysfs_get_value_from_attributes(class_dev->sysdevice->directory->attributes, dev->sysfs_file);
+                               if (temp)
+                                       goto label_found;
+                       }
+
+                       /* bah, let's go backwards up a level to see if the device is there,
+                        * as block partitions don't point to the physical device.  Need to fix that
+                        * up in the kernel...
+                        */
+                       if (strstr(class_dev->directory->path, "block")) {
+                               dbg("looking at block device...");
+                               if (isdigit(class_dev->directory->path[strlen(class_dev->directory->path)-1])) {
+                                       char path[SYSFS_PATH_MAX];
+                                       struct sysfs_class_device *class_dev_parent;
+
+                                       dbg("really is a partition...");
+                                       strcpy(path, class_dev->directory->path);
+                                       temp = strrchr(path, '/');
+                                       *temp = 0x00;
+                                       dbg("looking for a class device at '%s'", path);
+                                       class_dev_parent = sysfs_open_class_device(path);
+                                       if (class_dev_parent == NULL) {
+                                               dbg ("sysfs_open_class_device failed");
+                                               continue;
+                                       }
+                                       dbg("class_dev_parent->name = %s", class_dev_parent->name);
+
+                                       /* try to find the attribute in the class device directory */
+                                       temp = sysfs_get_value_from_attributes(class_dev_parent->directory->attributes, dev->sysfs_file);
+                                       if (temp) {
+                                               //sysfs_close_class_device(class_dev_parent);
+                                               goto label_found;
+                                       }
+
+                                       /* look in the class device device directory if present */
+                                       if (class_dev_parent->sysdevice) {
+                                               temp = sysfs_get_value_from_attributes(class_dev_parent->sysdevice->directory->attributes, dev->sysfs_file);
+                                               if (temp) {
+                                                       // sysfs_close_class_device(class_dev_parent);
+                                                       goto label_found;
+                                               }
+                                       }
+                                       
+                               }
+                       }
+                       continue;
+                                               
+label_found:
+                       dbg("file '%s' found with value '%s'", dev->sysfs_file, temp);
+                       if (strcmp(dev->sysfs_value, temp) != 0)
+                               continue;
+
+                       strcpy(attr->name, dev->attr.name);
+                       attr->mode = dev->attr.mode;
+                       strcpy(attr->owner, dev->attr.owner);
+                       strcpy(attr->group, dev->attr.group);
+                       dbg("file '%s' with value '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
+                               dev->sysfs_file, dev->sysfs_value, attr->name, 
+                               dev->attr.owner, dev->attr.group, dev->attr.mode);
+                       return retval;
+dbg("LABEL name = '%s', bus = '%s', sysfs_file = '%s', sysfs_value = '%s'"
                                " owner = '%s', group = '%s', mode = '%#o'",
                                dev->attr.name, dev->bus, dev->sysfs_file, dev->sysfs_value,
                                dev->attr.owner, dev->attr.group, dev->attr.mode);
                        break;
+                       }
                case NUMBER:
                        {
                        char path[SYSFS_PATH_MAX];
                        char *temp;
 
-                       found = 0;      
+                       found = 0;
+                       if (!class_dev->sysdevice)
+                               continue;
                        strcpy(path, class_dev->sysdevice->directory->path);
                        temp = strrchr(path, '/');
                        dbg("NUMBER path = '%s'", path);
@@ -469,6 +547,8 @@ static int get_attr(struct sysfs_class_device *class_dev, struct device_attr *at
                        char path[SYSFS_PATH_MAX];
                        char *temp;
 
+                       if (!class_dev->sysdevice)
+                               continue;
                        found = 0;      
                        strcpy(path, class_dev->sysdevice->directory->path);
                        temp = strrchr(path, '/');
@@ -508,8 +588,10 @@ static int get_attr(struct sysfs_class_device *class_dev, struct device_attr *at
                                dev->attr.owner, dev->attr.group, dev->attr.mode);
                        return retval;
                        break;
+               case KERNEL_NAME:
+                       break;
                default:
-                       dbg("Unknown type of device!");
+                       dbg("Unknown type of device '%d'", dev->type);
                        break;
                }       
        }