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https://github.com/systemd/systemd.git
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[PATCH] start working on label support, and fix some segfaults for block devices.
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parent
fa39f0990a
commit
03e64c8f8c
84
namedev.c
84
namedev.c
@ -421,23 +421,101 @@ static int get_attr(struct sysfs_class_device *class_dev, struct device_attr *at
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int retval = 0;
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int found;
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if (class_dev->sysdevice) {
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dbg("class_dev->sysdevice->directory->path = '%s'", class_dev->sysdevice->directory->path);
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dbg("class_dev->sysdevice->bus_id = '%s'", class_dev->sysdevice->bus_id);
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} else {
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dbg("class_dev->name = '%s'", class_dev->name);
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}
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list_for_each(tmp, &config_device_list) {
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struct config_device *dev = list_entry(tmp, struct config_device, node);
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switch (dev->type) {
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case LABEL:
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{
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char *temp;
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dbg("LABEL: match file '%s' with value '%s'", dev->sysfs_file, dev->sysfs_value);
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/* try to find the attribute in the class device directory */
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temp = sysfs_get_value_from_attributes(class_dev->directory->attributes, dev->sysfs_file);
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if (temp)
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goto label_found;
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/* look in the class device device directory if present */
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if (class_dev->sysdevice) {
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temp = sysfs_get_value_from_attributes(class_dev->sysdevice->directory->attributes, dev->sysfs_file);
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if (temp)
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goto label_found;
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}
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/* bah, let's go backwards up a level to see if the device is there,
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* as block partitions don't point to the physical device. Need to fix that
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* up in the kernel...
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*/
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if (strstr(class_dev->directory->path, "block")) {
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dbg("looking at block device...");
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if (isdigit(class_dev->directory->path[strlen(class_dev->directory->path)-1])) {
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char path[SYSFS_PATH_MAX];
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struct sysfs_class_device *class_dev_parent;
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dbg("really is a partition...");
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strcpy(path, class_dev->directory->path);
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temp = strrchr(path, '/');
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*temp = 0x00;
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dbg("looking for a class device at '%s'", path);
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class_dev_parent = sysfs_open_class_device(path);
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if (class_dev_parent == NULL) {
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dbg ("sysfs_open_class_device failed");
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continue;
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}
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dbg("class_dev_parent->name = %s", class_dev_parent->name);
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/* try to find the attribute in the class device directory */
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temp = sysfs_get_value_from_attributes(class_dev_parent->directory->attributes, dev->sysfs_file);
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if (temp) {
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//sysfs_close_class_device(class_dev_parent);
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goto label_found;
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}
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/* look in the class device device directory if present */
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if (class_dev_parent->sysdevice) {
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temp = sysfs_get_value_from_attributes(class_dev_parent->sysdevice->directory->attributes, dev->sysfs_file);
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if (temp) {
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// sysfs_close_class_device(class_dev_parent);
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goto label_found;
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}
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}
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}
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}
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continue;
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label_found:
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dbg("file '%s' found with value '%s'", dev->sysfs_file, temp);
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if (strcmp(dev->sysfs_value, temp) != 0)
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continue;
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strcpy(attr->name, dev->attr.name);
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attr->mode = dev->attr.mode;
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strcpy(attr->owner, dev->attr.owner);
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strcpy(attr->group, dev->attr.group);
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dbg("file '%s' with value '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
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dev->sysfs_file, dev->sysfs_value, attr->name,
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dev->attr.owner, dev->attr.group, dev->attr.mode);
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return retval;
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dbg("LABEL name = '%s', bus = '%s', sysfs_file = '%s', sysfs_value = '%s'"
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" owner = '%s', group = '%s', mode = '%#o'",
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dev->attr.name, dev->bus, dev->sysfs_file, dev->sysfs_value,
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dev->attr.owner, dev->attr.group, dev->attr.mode);
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break;
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}
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case NUMBER:
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{
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char path[SYSFS_PATH_MAX];
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char *temp;
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found = 0;
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if (!class_dev->sysdevice)
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continue;
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strcpy(path, class_dev->sysdevice->directory->path);
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temp = strrchr(path, '/');
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dbg("NUMBER path = '%s'", path);
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@ -469,6 +547,8 @@ static int get_attr(struct sysfs_class_device *class_dev, struct device_attr *at
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char path[SYSFS_PATH_MAX];
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char *temp;
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if (!class_dev->sysdevice)
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continue;
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found = 0;
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strcpy(path, class_dev->sysdevice->directory->path);
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temp = strrchr(path, '/');
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@ -508,8 +588,10 @@ static int get_attr(struct sysfs_class_device *class_dev, struct device_attr *at
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dev->attr.owner, dev->attr.group, dev->attr.mode);
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return retval;
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break;
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case KERNEL_NAME:
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break;
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default:
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dbg("Unknown type of device!");
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dbg("Unknown type of device '%d'", dev->type);
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break;
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}
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}
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