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am 8c9bcff8: Merge "Add an installd command to prune dex files."

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* commit '8c9bcff892ae30897a971c3b97305e70db5b5bd3':
  Add an installd command to prune dex files.
This commit is contained in:
Narayan Kamath 2014-06-16 13:28:01 +00:00 committed by Android Git Automerger
commit 395a6a642d
4 changed files with 54 additions and 12 deletions
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41
cmds/installd/commands.c
View File

@ -73,7 +73,7 @@ int install(const char *pkgname, uid_t uid, gid_t gid, const char *seinfo)
}
} else {
if (S_ISDIR(libStat.st_mode)) {
if (delete_dir_contents(libsymlink, 1, 0) < 0) {
if (delete_dir_contents(libsymlink, 1, NULL) < 0) {
ALOGE("couldn't delete lib directory during install for: %s", libsymlink);
return -1;
}
@ -176,6 +176,10 @@ int fix_uid(const char *pkgname, uid_t uid, gid_t gid)
return 0;
}
static int lib_dir_matcher(const char* file_name, const int is_dir) {
return is_dir && !strcmp(file_name, "lib");
}
int delete_user_data(const char *pkgname, userid_t userid)
{
char pkgdir[PKG_PATH_MAX];
@ -184,7 +188,7 @@ int delete_user_data(const char *pkgname, userid_t userid)
return -1;
/* delete contents, excluding "lib", but not the directory itself */
return delete_dir_contents(pkgdir, 0, "lib");
return delete_dir_contents(pkgdir, 0, &lib_dir_matcher);
}
int make_user_data(const char *pkgname, uid_t uid, userid_t userid, const char* seinfo)
@ -225,7 +229,7 @@ int make_user_data(const char *pkgname, uid_t uid, userid_t userid, const char*
}
} else {
if (S_ISDIR(libStat.st_mode)) {
if (delete_dir_contents(libsymlink, 1, 0) < 0) {
if (delete_dir_contents(libsymlink, 1, NULL) < 0) {
ALOGE("couldn't delete lib directory during install for non-primary: %s",
libsymlink);
unlink(pkgdir);
@ -307,7 +311,7 @@ int delete_cache(const char *pkgname, userid_t userid)
return -1;
/* delete contents, not the directory, no exceptions */
return delete_dir_contents(cachedir, 0, 0);
return delete_dir_contents(cachedir, 0, NULL);
}
/* Try to ensure free_size bytes of storage are available.
@ -1152,7 +1156,7 @@ int linklib(const char* pkgname, const char* asecLibDir, int userId)
}
} else {
if (S_ISDIR(libStat.st_mode)) {
if (delete_dir_contents(libsymlink, 1, 0) < 0) {
if (delete_dir_contents(libsymlink, 1, NULL) < 0) {
rc = -1;
goto out;
}
@ -1377,3 +1381,30 @@ int restorecon_data(const char* pkgName, const char* seinfo, uid_t uid)
free(userdir);
return ret;
}
static int prune_dex_exclusion_predicate(const char *file_name, const int is_dir)
{
// Don't exclude any directories, we want to inspect them
// recusively for files.
if (is_dir) {
return 0;
}
// Don't exclude regular files that start with the list
// of prefixes.
static const char data_app_prefix[] = "data@app@";
static const char data_priv_app_prefix[] = "data@priv-app@";
if (!strncmp(file_name, data_app_prefix, sizeof(data_app_prefix) - 1) ||
!strncmp(file_name, data_priv_app_prefix, sizeof(data_priv_app_prefix) - 1)) {
return 0;
}
// Exclude all regular files that don't start with the prefix "data@app@" or
// "data@priv-app@".
return 1;
}
int prune_dex_cache() {
return delete_dir_contents(DALVIK_CACHE_PREFIX, 0, &prune_dex_exclusion_predicate);
}

7
cmds/installd/installd.c
View File

@ -140,6 +140,12 @@ static int do_restorecon_data(char **arg, char reply[REPLY_MAX] __attribute__((u
/* pkgName, seinfo, uid*/
}
static int do_prune_dex_cache(char **arg __attribute__((unused)),
char reply[REPLY_MAX] __attribute__((unused)))
{
return prune_dex_cache();
}
struct cmdinfo {
const char *name;
unsigned numargs;
@ -166,6 +172,7 @@ struct cmdinfo cmds[] = {
{ "rmuser", 1, do_rm_user },
{ "idmap", 3, do_idmap },
{ "restorecondata", 3, do_restorecon_data },
{ "prunedexcache", 0, do_prune_dex_cache },
};
static int readx(int s, void *_buf, int count)

3
cmds/installd/installd.h
View File

@ -159,7 +159,7 @@ int create_cache_path(char path[PKG_PATH_MAX], const char *src,
int delete_dir_contents(const char *pathname,
int also_delete_dir,
const char *ignore);
int (*exclusion_predicate)(const char *name, const int is_dir));
int delete_dir_contents_fd(int dfd, const char *name);
@ -220,3 +220,4 @@ int movefiles();
int linklib(const char* target, const char* source, int userId);
int idmap(const char *target_path, const char *overlay_path, uid_t uid);
int restorecon_data();
int prune_dex_cache();

15
cmds/installd/utils.c
View File

@ -219,7 +219,8 @@ int is_valid_package_name(const char* pkgname) {
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;
@ -232,8 +233,10 @@ static int _delete_dir_contents(DIR *d, const char *ignore)
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;
@ -258,7 +261,7 @@ static int _delete_dir_contents(DIR *d, const char *ignore)
result = -1;
continue;
}
if (_delete_dir_contents(subdir, 0)) {
if (_delete_dir_contents(subdir, exclusion_predicate)) {
result = -1;
}
closedir(subdir);
@ -279,7 +282,7 @@ static int _delete_dir_contents(DIR *d, const char *ignore)
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;
@ -289,7 +292,7 @@ int delete_dir_contents(const char *pathname,
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)) {