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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/os_compat_android.h" | 5 #include "base/os_compat_android.h" |
6 | 6 |
| 7 #include <asm/unistd.h> |
7 #include <errno.h> | 8 #include <errno.h> |
8 #include <math.h> | 9 #include <math.h> |
9 #include <sys/stat.h> | 10 #include <sys/stat.h> |
| 11 #include <sys/syscall.h> |
10 #include <time64.h> | 12 #include <time64.h> |
11 | 13 |
12 #include "base/rand_util.h" | 14 #include "base/rand_util.h" |
13 #include "base/stringprintf.h" | 15 #include "base/stringprintf.h" |
14 #include "base/strings/string_piece.h" | 16 #include "base/strings/string_piece.h" |
15 | 17 |
| 18 extern "C" { |
16 // There is no futimes() avaiable in Bionic, so we provide our own | 19 // There is no futimes() avaiable in Bionic, so we provide our own |
17 // implementation until it is there. | 20 // implementation until it is there. |
18 extern "C" { | 21 int futimes(int fd, const struct timeval tv[2]) { |
| 22 if (tv == NULL) |
| 23 return syscall(__NR_utimensat, fd, NULL, NULL, 0); |
19 | 24 |
20 int futimes(int fd, const struct timeval tv[2]) { | 25 if (tv[0].tv_usec < 0 || tv[0].tv_usec >= 1000000 || |
21 const std::string fd_path = base::StringPrintf("/proc/self/fd/%d", fd); | 26 tv[1].tv_usec < 0 || tv[1].tv_usec >= 1000000) { |
22 return utimes(fd_path.c_str(), tv); | 27 errno = EINVAL; |
| 28 return -1; |
| 29 } |
| 30 |
| 31 // Convert timeval to timespec. |
| 32 struct timespec ts[2]; |
| 33 ts[0].tv_sec = tv[0].tv_sec; |
| 34 ts[0].tv_nsec = tv[0].tv_usec * 1000; |
| 35 ts[1].tv_sec = tv[1].tv_sec; |
| 36 ts[1].tv_nsec = tv[1].tv_usec * 1000; |
| 37 return syscall(__NR_utimensat, fd, NULL, ts, 0); |
23 } | 38 } |
24 | 39 |
25 // Android has only timegm64() and no timegm(). | 40 // Android has only timegm64() and no timegm(). |
26 // We replicate the behaviour of timegm() when the result overflows time_t. | 41 // We replicate the behaviour of timegm() when the result overflows time_t. |
27 time_t timegm(struct tm* const t) { | 42 time_t timegm(struct tm* const t) { |
28 // time_t is signed on Android. | 43 // time_t is signed on Android. |
29 static const time_t kTimeMax = ~(1 << (sizeof(time_t) * CHAR_BIT - 1)); | 44 static const time_t kTimeMax = ~(1 << (sizeof(time_t) * CHAR_BIT - 1)); |
30 static const time_t kTimeMin = (1 << (sizeof(time_t) * CHAR_BIT - 1)); | 45 static const time_t kTimeMin = (1 << (sizeof(time_t) * CHAR_BIT - 1)); |
31 time64_t result = timegm64(t); | 46 time64_t result = timegm64(t); |
32 if (result < kTimeMin || result > kTimeMax) | 47 if (result < kTimeMin || result > kTimeMax) |
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146 // The directory doesn't exist, but an error occured | 161 // The directory doesn't exist, but an error occured |
147 return NULL; | 162 return NULL; |
148 } | 163 } |
149 } | 164 } |
150 | 165 |
151 // We reached the max number of tries. | 166 // We reached the max number of tries. |
152 return NULL; | 167 return NULL; |
153 } | 168 } |
154 | 169 |
155 } // extern "C" | 170 } // extern "C" |
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