commit 3aee2c5c749dc2589f001b26fae1ec958ec89524
author Narayan Kamath <narayan@google.com> Tue Jun 10 13:16:47 2014 +0100
committer Narayan Kamath <narayan@google.com> Tue Jun 10 15:21:18 2014 +0100
tree 6005e529d689d349b6e004a93a43faf3ffbf0713
parent 065e9c86e249beac08783c7e9334d5709e2c9080

Add an installd command to prune dex files.

This is a straightforward port of logic from
PackageManagerService#pruneDexFiles.

bug: 14407732

Change-Id: I892cff027ddcbb1a4fb37a7af5ecf1697049a188

cmds/installd/utils.c

diff --git a/cmds/installd/utils.c b/cmds/installd/utils.c
index 671d031..cc3572d 100644
--- a/cmds/installd/utils.c
+++ b/cmds/installd/utils.c
@@ -208,7 +208,8 @@
     return 0;
 }
 
-static int _delete_dir_contents(DIR *d, const char *ignore)
+static int _delete_dir_contents(DIR *d,
+                                int (*exclusion_predicate)(const char *name, const int is_dir))
 {
     int result = 0;
     struct dirent *de;
@@ -221,8 +222,10 @@
     while ((de = readdir(d))) {
         const char *name = de->d_name;
 
-            /* skip the ignore name if provided */
-        if (ignore && !strcmp(name, ignore)) continue;
+            /* check using the exclusion predicate, if provided */
+        if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) {
+            continue;
+        }
 
         if (de->d_type == DT_DIR) {
             int r, subfd;
@@ -247,7 +250,7 @@
                 result = -1;
                 continue;
             }
-            if (_delete_dir_contents(subdir, 0)) {
+            if (_delete_dir_contents(subdir, exclusion_predicate)) {
                 result = -1;
             }
             closedir(subdir);
@@ -268,7 +271,7 @@
 
 int delete_dir_contents(const char *pathname,
                         int also_delete_dir,
-                        const char *ignore)
+                        int (*exclusion_predicate)(const char*, const int))
 {
     int res = 0;
     DIR *d;
@@ -278,7 +281,7 @@
         ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno));
         return -errno;
     }
-    res = _delete_dir_contents(d, ignore);
+    res = _delete_dir_contents(d, exclusion_predicate);
     closedir(d);
     if (also_delete_dir) {
         if (rmdir(pathname)) {