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Android: sdcardfs: Change cache GID value 

Change-Id: Ieb955dd26493da26a458bc20fbbe75bca32b094f
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 37193650
This commit is contained in:
Daniel Rosenberg 2017-04-17 17:11:38 -07:00 committed by LuK1337
parent 9631d319f5
commit ad6a3f9d20
2 changed files with 5 additions and 3 deletions
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2
fs/sdcardfs/derived_perm.c
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@ -221,7 +221,7 @@ void fixup_lower_ownership(struct dentry *dentry, const char *name)
break;
case PERM_ANDROID_PACKAGE_CACHE:
if (info->d_uid != 0)
gid = multiuser_get_cache_gid(info->d_uid);
gid = multiuser_get_ext_cache_gid(info->d_uid);
else
gid = multiuser_get_uid(info->userid, uid);
break;

6
fs/sdcardfs/multiuser.h
View File

@ -23,6 +23,8 @@
#define AID_APP_END 19999 /* last app user */
#define AID_CACHE_GID_START 20000 /* start of gids for apps to mark cached data */
#define AID_EXT_GID_START 30000 /* start of gids for apps to mark external data */
#define AID_EXT_CACHE_GID_START 40000 /* start of gids for apps to mark external cached data */
#define AID_EXT_CACHE_GID_END 49999 /* end of gids for apps to mark external cached data */
#define AID_SHARED_GID_START 50000 /* start of gids for apps in each user to share */
typedef uid_t userid_t;
@ -33,9 +35,9 @@ static inline uid_t multiuser_get_uid(userid_t user_id, appid_t app_id)
return (user_id * AID_USER_OFFSET) + (app_id % AID_USER_OFFSET);
}
static inline gid_t multiuser_get_cache_gid(uid_t uid)
static inline gid_t multiuser_get_ext_cache_gid(uid_t uid)
{
return uid - AID_APP_START + AID_CACHE_GID_START;
return uid - AID_APP_START + AID_EXT_CACHE_GID_START;
}
static inline gid_t multiuser_get_ext_gid(uid_t uid)