Ensure that a directory cache has the appropriate section before reporting

[fontconfig.git] / src / fccache.c

diff --git a/src/fccache.c b/src/fccache.c
index d001e2b255bec1d13a94d7336dc7ad7cd9d3f6bc..7ff9fc617e95da09cf0888df2840cf22f2115543 100644 (file)
--- a/src/fccache.c
+++ b/src/fccache.c
@@ -522,6 +522,9 @@ FcDirCacheValid (const FcChar8 *dir)
 {
     FcChar8     *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
     struct stat file_stat, dir_stat;
+    int        fd;
+    off_t      current_arch_start;
+    char       *current_arch_machine_name;
 
     if (stat ((char *) dir, &dir_stat) < 0)
     {
@@ -533,6 +536,18 @@ FcDirCacheValid (const FcChar8 *dir)
         FcStrFree (cache_file);
         return FcFalse;
     }
+
+    current_arch_machine_name = FcCacheMachineSignature();
+    fd = open(cache_file, O_RDONLY);
+    if (fd == -1)
+        return FcFalse;
+
+    current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
+    close (fd);
+
+    if (current_arch_start < 0)
+        return FcFalse;
+
     FcStrFree (cache_file);
     /*
      * If the directory has been modified more recently than