cutils/qtaguid.h

   1 /*
   2  * Copyright (C) 2011 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef __CUTILS_QTAGUID_H
  18 #define __CUTILS_QTAGUID_H
  19
  20 #include <stdint.h>
  21 #include <sys/types.h>
  22 #include <unistd.h>
  23
  24 #ifdef __cplusplus
  25 extern "C" {
  26 #endif
  27
  28 /*
  29  * Set tags (and owning UIDs) for network sockets.
  30 */
  31 extern int qtaguid_tagSocket(int sockfd, int tag, uid_t uid);
  32
  33 /*
  34  * Untag a network socket before closing.
  35 */
  36 extern int qtaguid_untagSocket(int sockfd);
  37
  38 /*
  39  * For the given uid, switch counter sets.
  40  * The kernel only keeps a limited number of sets.
  41  * 2 for now.
  42  */
  43 extern int qtaguid_setCounterSet(int counterSetNum, uid_t uid);
  44
  45 /*
  46  * Delete all tag info that relates to the given tag an uid.
  47  * If the tag is 0, then ALL info about the uid is freeded.
  48  * The delete data also affects active tagged socketd, which are
  49  * then untagged.
  50  * The calling process can only operate on its own tags.
  51  * Unless it is part of the happy AID_NET_BW_ACCT group.
  52  * In which case it can clobber everything.
  53  */
  54 extern int qtaguid_deleteTagData(int tag, uid_t uid);
  55
  56 /*
  57  * Enable/disable qtaguid functionnality at a lower level.
  58  * When pacified, the kernel will accept commands but do nothing.
  59  */
  60 extern int qtaguid_setPacifier(int on);
  61
  62 #ifdef __cplusplus
  63 }
  64 #endif
  65
  66 #endif /* __CUTILS_QTAG_UID_H */