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      1 /*
      2  * Copyright 2012, 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 #include <portability.h>
     18 #include <unistd.h>
     19 #include <fcntl.h>
     20 
     21 #include <asm/unistd.h>
     22 #include <asm/unistd-portable.h>
     23 
     24 #include <fcntl_portable.h>
     25 #include <timerfd_portable.h>
     26 
     27 #include <filefd_portable.h>
     28 
     29 
     30 #define PORTABLE_TAG "timerfd_portable"
     31 #include <log_portable.h>
     32 
     33 extern int syscall(int, ...);
     34 
     35 
     36 /* NOTE: LTP defaults to using O_NONBLOCK even if TFD_NONBLOCK is defined */
     37 
     38 
     39 /*
     40  * Portable to Native event flags mapper.
     41  */
     42 static inline int tdf_flags_pton(int portable_flags)
     43 {
     44     int native_flags = 0;
     45 
     46     ALOGV("%s(portable_flags:0x%x) {", __func__, portable_flags);
     47 
     48     if (portable_flags & TFD_NONBLOCK_PORTABLE) {
     49         native_flags |= TFD_NONBLOCK;
     50     }
     51 
     52     if (portable_flags & TFD_CLOEXEC_PORTABLE) {
     53         native_flags |= TFD_CLOEXEC;
     54     }
     55 
     56     ALOGV("%s: return(native_flags:%d); }", __func__, native_flags);
     57     return native_flags;
     58 }
     59 
     60 
     61 int WRAP(timerfd_create)(int clockid, int portable_flags) {
     62     int rv;
     63     int native_flags;
     64 
     65     ALOGV(" ");
     66     ALOGV("%s(clockid:%d, portable_flags:%d) {", __func__,
     67               clockid,    portable_flags);
     68 
     69     native_flags = tdf_flags_pton(portable_flags);
     70 
     71     rv = REAL(syscall)(__NR_timerfd_create, clockid, native_flags);
     72     if (rv >= 0) {
     73         if (native_flags & TFD_CLOEXEC) {
     74             filefd_CLOEXEC_enabled(rv);
     75         }
     76         filefd_opened(rv, TIMER_FD_TYPE);
     77     }
     78 
     79     ALOGV("%s: return(rv:%d); }", __func__, rv);
     80     return rv;
     81 }
     82 
     83