Added support to calculate storage using project ids on devices whose
user data is wiped and their add directories are created using project
id
Bug: b/215154615
Test: atest StorageHostTest
Test: atest tests/installd_service_test.cpp
Change-Id: Ib29af7c4c0e80d5b8902899b38de41a807e1cd72
Merged-In: Idfe262d5606a4f577587e75e4a29fdb55c021a37
diff --git a/cmds/installd/utils.cpp b/cmds/installd/utils.cpp
index 8cfd123..fd4d7bd 100644
--- a/cmds/installd/utils.cpp
+++ b/cmds/installd/utils.cpp
@@ -37,6 +37,7 @@
#include <android-base/unique_fd.h>
#include <cutils/fs.h>
#include <cutils/properties.h>
+#include <linux/fs.h>
#include <log/log.h>
#include <private/android_filesystem_config.h>
#include <private/android_projectid_config.h>
@@ -434,7 +435,44 @@
return users;
}
+long get_project_id(uid_t uid, long start_project_id_range) {
+ return uid - AID_APP_START + start_project_id_range;
+}
+int set_quota_project_id(const std::string& path, long project_id, bool set_inherit) {
+ struct fsxattr fsx;
+ android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(path.c_str(), O_RDONLY | O_CLOEXEC)));
+ if (fd == -1) {
+ PLOG(ERROR) << "Failed to open " << path << " to set project id.";
+ return -1;
+ }
+
+ if (ioctl(fd, FS_IOC_FSGETXATTR, &fsx) == -1) {
+ PLOG(ERROR) << "Failed to get extended attributes for " << path << " to get project id.";
+ return -1;
+ }
+
+ fsx.fsx_projid = project_id;
+ if (ioctl(fd, FS_IOC_FSSETXATTR, &fsx) == -1) {
+ PLOG(ERROR) << "Failed to set project id on " << path;
+ return -1;
+ }
+ if (set_inherit) {
+ unsigned int flags;
+ if (ioctl(fd, FS_IOC_GETFLAGS, &flags) == -1) {
+ PLOG(ERROR) << "Failed to get flags for " << path << " to set project id inheritance.";
+ return -1;
+ }
+
+ flags |= FS_PROJINHERIT_FL;
+
+ if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == -1) {
+ PLOG(ERROR) << "Failed to set flags for " << path << " to set project id inheritance.";
+ return -1;
+ }
+ }
+ return 0;
+}
int calculate_tree_size(const std::string& path, int64_t* size,
int32_t include_gid, int32_t exclude_gid, bool exclude_apps) {
FTS *fts;