[Mesa-dev] [PATCH 1/8] util/disk_cache: fix bug with deleting old cache dirs

Timothy Arceri tarceri at itsqueeze.com
Wed Feb 22 03:45:39 UTC 2017


If there was more than a single directory in the .cache/mesa dir
then it would only remove one (or none) of the directories.

Apparently Valgrind was also reporting:
Conditional jump or move depends on uninitialised value
---
 src/util/disk_cache.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/util/disk_cache.c b/src/util/disk_cache.c
index 2f138da..b172b8b 100644
--- a/src/util/disk_cache.c
+++ b/src/util/disk_cache.c
@@ -152,14 +152,15 @@ remove_old_cache_directories(void *mem_ctx, char *path, const char *timestamp)
    struct dirent* d_entry;
    while((d_entry = readdir(dir)) != NULL)
    {
+      char *full_path =
+         ralloc_asprintf(mem_ctx, "%s/%s", path, d_entry->d_name);
+
       struct stat sb;
-      stat(d_entry->d_name, &sb);
+      stat(full_path, &sb);
       if (S_ISDIR(sb.st_mode) &&
           strcmp(d_entry->d_name, timestamp) != 0 &&
           strcmp(d_entry->d_name, "..") != 0 &&
           strcmp(d_entry->d_name, ".") != 0) {
-         char *full_path =
-            ralloc_asprintf(mem_ctx, "%s/%s", path, d_entry->d_name);
          nftw(full_path, remove_dir, 20, FTW_DEPTH);
       }
    }
-- 
2.9.3



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