Mark Salyzyn | facf94c | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007-2016 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 <errno.h> |
| 18 | #include <fcntl.h> |
| 19 | #include <unistd.h> |
| 20 | |
| 21 | #include <log/log.h> |
| 22 | |
| 23 | #include "config_write.h" |
| 24 | #include "fake_log_device.h" |
| 25 | #include "log_portability.h" |
| 26 | #include "logger.h" |
| 27 | |
| 28 | static int fakeOpen(); |
| 29 | static void fakeClose(); |
| 30 | static int fakeWrite(log_id_t log_id, struct timespec *ts, |
| 31 | struct iovec *vec, size_t nr); |
| 32 | |
| 33 | static int logFds[(int)LOG_ID_MAX] = { -1, -1, -1, -1, -1, -1 }; |
| 34 | |
| 35 | LIBLOG_HIDDEN struct android_log_transport_write fakeLoggerWrite = { |
| 36 | .node = { &fakeLoggerWrite.node, &fakeLoggerWrite.node }, |
| 37 | .context.private = &logFds, |
| 38 | .name = "fake", |
| 39 | .available = NULL, |
| 40 | .open = fakeOpen, |
| 41 | .close = fakeClose, |
| 42 | .write = fakeWrite, |
| 43 | }; |
| 44 | |
| 45 | static int fakeOpen() { |
| 46 | int i; |
| 47 | |
| 48 | for (i = 0; i < LOG_ID_MAX; i++) { |
| 49 | char buf[sizeof("/dev/log_security")]; |
| 50 | snprintf(buf, sizeof(buf), "/dev/log_%s", android_log_id_to_name(i)); |
| 51 | logFds[i] = fakeLogOpen(buf, O_WRONLY); |
| 52 | } |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | static void fakeClose() { |
| 57 | int i; |
| 58 | |
| 59 | for (i = 0; i < LOG_ID_MAX; i++) { |
| 60 | fakeLogClose(logFds[i]); |
| 61 | logFds[i] = -1; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | static int fakeWrite(log_id_t log_id, struct timespec *ts __unused, |
| 66 | struct iovec *vec, size_t nr) |
| 67 | { |
| 68 | ssize_t ret; |
| 69 | int logFd; |
| 70 | |
| 71 | if (/*(int)log_id >= 0 &&*/ (int)log_id >= (int)LOG_ID_MAX) { |
| 72 | return -EBADF; |
| 73 | } |
| 74 | |
| 75 | logFd = logFds[(int)log_id]; |
| 76 | ret = TEMP_FAILURE_RETRY(fakeLogWritev(logFd, vec, nr)); |
| 77 | if (ret < 0) { |
| 78 | ret = -errno; |
| 79 | } |
| 80 | |
| 81 | return ret; |
| 82 | } |