Remove the old log files if cache space is insufficient for OTA

We set the limit of the max stash size to 80% of cache size. But the
cache space can still be insufficient for the update if the log files
occupy a large chunk of /cache. So remove the old logs for now to make
room for the update.

Bug: 77528881
Test: unit tests pass
Change-Id: Ia8bcb0ace11f8164ad9290bfb360e08e31d282cb

1 files changed, 7 insertions, 7 deletions

diff --git a/applypatch/applypatch.cpp b/applypatch/applypatch.cpp
index 7645a400..6f6c187b 100644
--- a/applypatch/applypatch.cpp
+++ b/applypatch/applypatch.cpp
@@ -436,13 +436,13 @@ static size_t FileSink(const unsigned char* data, size_t len, int fd) {
 
 // Return the amount of free space (in bytes) on the filesystem
 // containing filename.  filename must exist.  Return -1 on error.
-size_t FreeSpaceForFile(const char* filename) {
-    struct statfs sf;
-    if (statfs(filename, &sf) != 0) {
-        printf("failed to statfs %s: %s\n", filename, strerror(errno));
-        return -1;
-    }
-    return sf.f_bsize * sf.f_bavail;
+size_t FreeSpaceForFile(const std::string& filename) {
+  struct statfs sf;
+  if (statfs(filename.c_str(), &sf) != 0) {
+    printf("failed to statfs %s: %s\n", filename.c_str(), strerror(errno));
+    return -1;
+  }
+  return sf.f_bsize * sf.f_bavail;
 }
 
 int CacheSizeCheck(size_t bytes) {