blob: caf1a2fab476d08369c3b2ca23ae806cc09f81c0
| 1 | /* |
| 2 | * various OS-feature replacement utilities |
| 3 | * copyright (c) 2000, 2001, 2002 Fabrice Bellard |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #ifndef AVFORMAT_OS_SUPPORT_H |
| 23 | #define AVFORMAT_OS_SUPPORT_H |
| 24 | |
| 25 | /** |
| 26 | * @file |
| 27 | * miscellaneous OS support macros and functions. |
| 28 | */ |
| 29 | |
| 30 | #include "config.h" |
| 31 | |
| 32 | #include <sys/stat.h> |
| 33 | |
| 34 | #ifdef _WIN32 |
| 35 | #if HAVE_DIRECT_H |
| 36 | #include <direct.h> |
| 37 | #endif |
| 38 | #if HAVE_IO_H |
| 39 | #include <io.h> |
| 40 | #endif |
| 41 | #endif |
| 42 | |
| 43 | #if defined(_WIN32) && !defined(__MINGW32CE__) |
| 44 | # include <fcntl.h> |
| 45 | # ifdef lseek |
| 46 | # undef lseek |
| 47 | # endif |
| 48 | # define lseek(f,p,w) _lseeki64((f), (p), (w)) |
| 49 | # ifdef stat |
| 50 | # undef stat |
| 51 | # endif |
| 52 | # define stat _stati64 |
| 53 | # ifdef fstat |
| 54 | # undef fstat |
| 55 | # endif |
| 56 | # define fstat(f,s) _fstati64((f), (s)) |
| 57 | #endif /* defined(_WIN32) && !defined(__MINGW32CE__) */ |
| 58 | |
| 59 | |
| 60 | #ifdef __ANDROID__ |
| 61 | # if HAVE_UNISTD_H |
| 62 | # include <unistd.h> |
| 63 | # endif |
| 64 | # ifdef lseek |
| 65 | # undef lseek |
| 66 | # endif |
| 67 | # define lseek(f,p,w) lseek64((f), (p), (w)) |
| 68 | #endif |
| 69 | |
| 70 | static inline int is_dos_path(const char *path) |
| 71 | { |
| 72 | #if HAVE_DOS_PATHS |
| 73 | if (path[0] && path[1] == ':') |
| 74 | return 1; |
| 75 | #endif |
| 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | #if defined(__OS2__) || defined(__Plan9__) |
| 80 | #define SHUT_RD 0 |
| 81 | #define SHUT_WR 1 |
| 82 | #define SHUT_RDWR 2 |
| 83 | #endif |
| 84 | |
| 85 | #if defined(_WIN32) |
| 86 | #define SHUT_RD SD_RECEIVE |
| 87 | #define SHUT_WR SD_SEND |
| 88 | #define SHUT_RDWR SD_BOTH |
| 89 | |
| 90 | #ifndef S_IRUSR |
| 91 | #define S_IRUSR S_IREAD |
| 92 | #endif |
| 93 | #ifndef S_IWUSR |
| 94 | #define S_IWUSR S_IWRITE |
| 95 | #endif |
| 96 | #endif |
| 97 | |
| 98 | #if CONFIG_NETWORK |
| 99 | #if !HAVE_SOCKLEN_T |
| 100 | typedef int socklen_t; |
| 101 | #endif |
| 102 | |
| 103 | /* most of the time closing a socket is just closing an fd */ |
| 104 | #if !HAVE_CLOSESOCKET |
| 105 | #define closesocket close |
| 106 | #endif |
| 107 | |
| 108 | #if !HAVE_POLL_H |
| 109 | typedef unsigned long nfds_t; |
| 110 | |
| 111 | #if HAVE_WINSOCK2_H |
| 112 | #include <winsock2.h> |
| 113 | #endif |
| 114 | #if !HAVE_STRUCT_POLLFD |
| 115 | struct pollfd { |
| 116 | int fd; |
| 117 | short events; /* events to look for */ |
| 118 | short revents; /* events that occurred */ |
| 119 | }; |
| 120 | |
| 121 | /* events & revents */ |
| 122 | #define POLLIN 0x0001 /* any readable data available */ |
| 123 | #define POLLOUT 0x0002 /* file descriptor is writeable */ |
| 124 | #define POLLRDNORM POLLIN |
| 125 | #define POLLWRNORM POLLOUT |
| 126 | #define POLLRDBAND 0x0008 /* priority readable data */ |
| 127 | #define POLLWRBAND 0x0010 /* priority data can be written */ |
| 128 | #define POLLPRI 0x0020 /* high priority readable data */ |
| 129 | |
| 130 | /* revents only */ |
| 131 | #define POLLERR 0x0004 /* errors pending */ |
| 132 | #define POLLHUP 0x0080 /* disconnected */ |
| 133 | #define POLLNVAL 0x1000 /* invalid file descriptor */ |
| 134 | #endif |
| 135 | |
| 136 | |
| 137 | int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout); |
| 138 | #define poll ff_poll |
| 139 | #endif /* HAVE_POLL_H */ |
| 140 | #endif /* CONFIG_NETWORK */ |
| 141 | |
| 142 | #if defined(__MINGW32CE__) |
| 143 | #define mkdir(a, b) _mkdir(a) |
| 144 | #elif defined(_WIN32) |
| 145 | #include <stdio.h> |
| 146 | #include <windows.h> |
| 147 | #include "libavutil/wchar_filename.h" |
| 148 | |
| 149 | #ifdef WINAPI_FAMILY |
| 150 | #include <winapifamily.h> |
| 151 | // If a WINAPI_FAMILY is defined, check that the desktop API subset |
| 152 | // is enabled |
| 153 | #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) |
| 154 | #define USE_MOVEFILEEXA |
| 155 | #endif |
| 156 | #else |
| 157 | // If no WINAPI_FAMILY is defined, assume the full API subset |
| 158 | #define USE_MOVEFILEEXA |
| 159 | #endif |
| 160 | |
| 161 | #define DEF_FS_FUNCTION(name, wfunc, afunc) \ |
| 162 | static inline int win32_##name(const char *filename_utf8) \ |
| 163 | { \ |
| 164 | wchar_t *filename_w; \ |
| 165 | int ret; \ |
| 166 | \ |
| 167 | if (utf8towchar(filename_utf8, &filename_w)) \ |
| 168 | return -1; \ |
| 169 | if (!filename_w) \ |
| 170 | goto fallback; \ |
| 171 | \ |
| 172 | ret = wfunc(filename_w); \ |
| 173 | av_free(filename_w); \ |
| 174 | return ret; \ |
| 175 | \ |
| 176 | fallback: \ |
| 177 | /* filename may be be in CP_ACP */ \ |
| 178 | return afunc(filename_utf8); \ |
| 179 | } |
| 180 | |
| 181 | DEF_FS_FUNCTION(unlink, _wunlink, _unlink) |
| 182 | DEF_FS_FUNCTION(mkdir, _wmkdir, _mkdir) |
| 183 | DEF_FS_FUNCTION(rmdir, _wrmdir , _rmdir) |
| 184 | |
| 185 | #define DEF_FS_FUNCTION2(name, wfunc, afunc, partype) \ |
| 186 | static inline int win32_##name(const char *filename_utf8, partype par) \ |
| 187 | { \ |
| 188 | wchar_t *filename_w; \ |
| 189 | int ret; \ |
| 190 | \ |
| 191 | if (utf8towchar(filename_utf8, &filename_w)) \ |
| 192 | return -1; \ |
| 193 | if (!filename_w) \ |
| 194 | goto fallback; \ |
| 195 | \ |
| 196 | ret = wfunc(filename_w, par); \ |
| 197 | av_free(filename_w); \ |
| 198 | return ret; \ |
| 199 | \ |
| 200 | fallback: \ |
| 201 | /* filename may be be in CP_ACP */ \ |
| 202 | return afunc(filename_utf8, par); \ |
| 203 | } |
| 204 | |
| 205 | DEF_FS_FUNCTION2(access, _waccess, _access, int) |
| 206 | DEF_FS_FUNCTION2(stat, _wstati64, _stati64, struct stat*) |
| 207 | |
| 208 | static inline int win32_rename(const char *src_utf8, const char *dest_utf8) |
| 209 | { |
| 210 | wchar_t *src_w, *dest_w; |
| 211 | int ret; |
| 212 | |
| 213 | if (utf8towchar(src_utf8, &src_w)) |
| 214 | return -1; |
| 215 | if (utf8towchar(dest_utf8, &dest_w)) { |
| 216 | av_free(src_w); |
| 217 | return -1; |
| 218 | } |
| 219 | if (!src_w || !dest_w) { |
| 220 | av_free(src_w); |
| 221 | av_free(dest_w); |
| 222 | goto fallback; |
| 223 | } |
| 224 | |
| 225 | ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING); |
| 226 | av_free(src_w); |
| 227 | av_free(dest_w); |
| 228 | // Lacking proper mapping from GetLastError() error codes to errno codes |
| 229 | if (ret) |
| 230 | errno = EPERM; |
| 231 | return ret; |
| 232 | |
| 233 | fallback: |
| 234 | /* filename may be be in CP_ACP */ |
| 235 | #ifdef USE_MOVEFILEEXA |
| 236 | ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING); |
| 237 | if (ret) |
| 238 | errno = EPERM; |
| 239 | #else |
| 240 | /* Windows Phone doesn't have MoveFileExA, and for Windows Store apps, |
| 241 | * it is available but not allowed by the app certification kit. However, |
| 242 | * it's unlikely that anybody would input filenames in CP_ACP there, so this |
| 243 | * fallback is kept mostly for completeness. Alternatively we could |
| 244 | * do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing |
| 245 | * explicit conversions with CP_ACP is allegedly forbidden in windows |
| 246 | * store apps (or windows phone), and the notion of a native code page |
| 247 | * doesn't make much sense there. */ |
| 248 | ret = rename(src_utf8, dest_utf8); |
| 249 | #endif |
| 250 | return ret; |
| 251 | } |
| 252 | |
| 253 | #define mkdir(a, b) win32_mkdir(a) |
| 254 | #define rename win32_rename |
| 255 | #define rmdir win32_rmdir |
| 256 | #define unlink win32_unlink |
| 257 | #define access win32_access |
| 258 | |
| 259 | #endif |
| 260 | |
| 261 | #endif /* AVFORMAT_OS_SUPPORT_H */ |
| 262 |