Create the /dev/sys/block/by-name/zoned_device symbolic link
This link will be used to change the sysfs attributes of the zoned block
device from an .rc file.
Bug: 335708738
Change-Id: I99f74c121e7d9da404c0564860c03ac1efe6c6d8
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
diff --git a/init/devices.cpp b/init/devices.cpp
index 792d8c8..5560c20 100644
--- a/init/devices.cpp
+++ b/init/devices.cpp
@@ -435,6 +435,7 @@
if (ReadFileToString("/sys/class/block/" + uevent.device_name + "/queue/zoned", &model) &&
!StartsWith(model, "none")) {
links.emplace_back("/dev/block/by-name/zoned_device");
+ links.emplace_back("/dev/sys/block/by-name/zoned_device");
}
auto last_slash = uevent.path.rfind('/');
@@ -483,11 +484,21 @@
// event.
if (action == "add" || (action == "change" && StartsWith(devpath, "/dev/block/dm-"))) {
for (const auto& link : links) {
+ std::string target;
+ if (StartsWith(link, "/dev/block/")) {
+ target = devpath;
+ } else if (StartsWith(link, "/dev/sys/block/")) {
+ target = "/sys/class/block/" + Basename(devpath);
+ } else {
+ LOG(ERROR) << "Unrecognized link type: " << link;
+ continue;
+ }
+
if (!mkdir_recursive(Dirname(link), 0755)) {
PLOG(ERROR) << "Failed to create directory " << Dirname(link);
}
- if (symlink(devpath.c_str(), link.c_str())) {
+ if (symlink(target.c_str(), link.c_str())) {
if (errno != EEXIST) {
PLOG(ERROR) << "Failed to symlink " << devpath << " to " << link;
} else if (std::string link_path;