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/* |
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* various OS-feature replacement utilities |
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* copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVFORMAT_OS_SUPPORT_H |
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#define AVFORMAT_OS_SUPPORT_H |
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/** |
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* @file |
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* miscellaneous OS support macros and functions. |
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*/ |
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#include "config.h" |
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#include <sys/stat.h> |
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#ifdef _WIN32 |
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#if HAVE_DIRECT_H |
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#include <direct.h> |
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#endif |
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#if HAVE_IO_H |
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#include <io.h> |
40 |
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#endif |
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#endif |
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#ifdef _WIN32 |
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# include <fcntl.h> |
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# include <stdint.h> |
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# ifdef lseek |
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# undef lseek |
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# endif |
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# define lseek(f,p,w) _lseeki64((f), (p), (w)) |
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# ifdef stat |
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# undef stat |
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# endif |
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# define stat win32_stat |
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/* |
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* The POSIX definition for the stat() function uses a struct of the |
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* same name (struct stat), that why it takes this extra effort for |
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* redirecting/replacing the stat() function with our own one which |
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* is capable to handle long path names on Windows. |
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* The struct below roughly follows the POSIX definition. Time values |
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* are 64bit, but in cases when _USE_32BIT_TIME_T is defined, they |
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* will be set to values no larger than INT32_MAX which corresponds |
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* to file times up to the year 2038. |
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*/ |
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struct win32_stat |
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{ |
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_dev_t st_dev; /* ID of device containing file */ |
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_ino_t st_ino; /* inode number */ |
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unsigned short st_mode; /* protection */ |
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short st_nlink; /* number of hard links */ |
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short st_uid; /* user ID of owner */ |
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short st_gid; /* group ID of owner */ |
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_dev_t st_rdev; /* device ID (if special file) */ |
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int64_t st_size; /* total size, in bytes */ |
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int64_t st_atime; /* time of last access */ |
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int64_t st_mtime; /* time of last modification */ |
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int64_t st_ctime; /* time of last status change */ |
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}; |
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# ifdef fstat |
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# undef fstat |
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# endif |
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# define fstat win32_fstat |
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#endif /* defined(_WIN32) */ |
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#ifdef __ANDROID__ |
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# if HAVE_UNISTD_H |
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# include <unistd.h> |
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# endif |
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# ifdef lseek |
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# undef lseek |
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# endif |
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# define lseek(f,p,w) lseek64((f), (p), (w)) |
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#endif |
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static inline int is_dos_path(const char *path) |
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{ |
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#if HAVE_DOS_PATHS |
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if (path[0] && path[1] == ':') |
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return 1; |
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#endif |
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10657 |
return 0; |
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} |
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#if defined(_WIN32) |
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#ifndef S_IRUSR |
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#define S_IRUSR S_IREAD |
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#endif |
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#ifndef S_IWUSR |
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#define S_IWUSR S_IWRITE |
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#endif |
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#endif |
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#if CONFIG_NETWORK |
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#if defined(_WIN32) |
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#define SHUT_RD SD_RECEIVE |
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#define SHUT_WR SD_SEND |
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#define SHUT_RDWR SD_BOTH |
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#else |
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#include <sys/socket.h> |
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#if !defined(SHUT_RD) /* OS/2, DJGPP */ |
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#define SHUT_RD 0 |
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#define SHUT_WR 1 |
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#define SHUT_RDWR 2 |
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#endif |
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#endif |
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#if !HAVE_SOCKLEN_T |
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typedef int socklen_t; |
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#endif |
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/* most of the time closing a socket is just closing an fd */ |
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#if !HAVE_CLOSESOCKET |
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#define closesocket close |
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#endif |
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#if !HAVE_POLL_H |
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typedef unsigned long nfds_t; |
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#if HAVE_WINSOCK2_H |
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#include <winsock2.h> |
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#endif |
145 |
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#if !HAVE_STRUCT_POLLFD |
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struct pollfd { |
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int fd; |
148 |
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short events; /* events to look for */ |
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short revents; /* events that occurred */ |
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}; |
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/* events & revents */ |
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#define POLLIN 0x0001 /* any readable data available */ |
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#define POLLOUT 0x0002 /* file descriptor is writeable */ |
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#define POLLRDNORM POLLIN |
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#define POLLWRNORM POLLOUT |
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#define POLLRDBAND 0x0008 /* priority readable data */ |
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#define POLLWRBAND 0x0010 /* priority data can be written */ |
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#define POLLPRI 0x0020 /* high priority readable data */ |
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/* revents only */ |
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#define POLLERR 0x0004 /* errors pending */ |
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#define POLLHUP 0x0080 /* disconnected */ |
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#define POLLNVAL 0x1000 /* invalid file descriptor */ |
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#endif |
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int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout); |
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#define poll ff_poll |
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#endif /* HAVE_POLL_H */ |
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#endif /* CONFIG_NETWORK */ |
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#ifdef _WIN32 |
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#include <stdio.h> |
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#include <windows.h> |
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#include "libavutil/mem.h" |
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#include "libavutil/wchar_filename.h" |
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#define DEF_FS_FUNCTION(name, wfunc, afunc) \ |
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static inline int win32_##name(const char *filename_utf8) \ |
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{ \ |
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wchar_t *filename_w; \ |
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int ret; \ |
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\ |
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if (get_extended_win32_path(filename_utf8, &filename_w)) \ |
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return -1; \ |
187 |
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if (!filename_w) \ |
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goto fallback; \ |
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\ |
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ret = wfunc(filename_w); \ |
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av_free(filename_w); \ |
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return ret; \ |
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\ |
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fallback: \ |
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/* filename may be be in CP_ACP */ \ |
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return afunc(filename_utf8); \ |
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} |
198 |
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199 |
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DEF_FS_FUNCTION(unlink, _wunlink, _unlink) |
200 |
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DEF_FS_FUNCTION(mkdir, _wmkdir, _mkdir) |
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DEF_FS_FUNCTION(rmdir, _wrmdir , _rmdir) |
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static inline int win32_access(const char *filename_utf8, int mode) |
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{ |
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wchar_t *filename_w; |
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int ret; |
207 |
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if (get_extended_win32_path(filename_utf8, &filename_w)) |
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return -1; |
209 |
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if (!filename_w) |
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goto fallback; |
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ret = _waccess(filename_w, mode); |
212 |
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av_free(filename_w); |
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return ret; |
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fallback: |
215 |
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return _access(filename_utf8, mode); |
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} |
217 |
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static inline void copy_stat(struct _stat64 *crtstat, struct win32_stat *buf) |
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{ |
220 |
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buf->st_dev = crtstat->st_dev; |
221 |
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buf->st_ino = crtstat->st_ino; |
222 |
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buf->st_mode = crtstat->st_mode; |
223 |
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buf->st_nlink = crtstat->st_nlink; |
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buf->st_uid = crtstat->st_uid; |
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buf->st_gid = crtstat->st_gid; |
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buf->st_rdev = crtstat->st_rdev; |
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buf->st_size = crtstat->st_size; |
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buf->st_atime = crtstat->st_atime; |
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buf->st_mtime = crtstat->st_mtime; |
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buf->st_ctime = crtstat->st_ctime; |
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} |
232 |
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233 |
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static inline int win32_stat(const char *filename_utf8, struct win32_stat *buf) |
234 |
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{ |
235 |
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struct _stat64 crtstat = { 0 }; |
236 |
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wchar_t *filename_w; |
237 |
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int ret; |
238 |
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239 |
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if (get_extended_win32_path(filename_utf8, &filename_w)) |
240 |
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return -1; |
241 |
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242 |
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if (filename_w) { |
243 |
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ret = _wstat64(filename_w, &crtstat); |
244 |
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av_free(filename_w); |
245 |
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} else |
246 |
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ret = _stat64(filename_utf8, &crtstat); |
247 |
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248 |
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copy_stat(&crtstat, buf); |
249 |
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250 |
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return ret; |
251 |
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} |
252 |
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253 |
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static inline int win32_fstat(int fd, struct win32_stat *buf) |
254 |
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{ |
255 |
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struct _stat64 crtstat = { 0 }; |
256 |
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int ret; |
257 |
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258 |
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ret = _fstat64(fd, &crtstat); |
259 |
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260 |
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copy_stat(&crtstat, buf); |
261 |
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262 |
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return ret; |
263 |
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} |
264 |
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265 |
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static inline int win32_rename(const char *src_utf8, const char *dest_utf8) |
266 |
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{ |
267 |
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wchar_t *src_w, *dest_w; |
268 |
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int ret; |
269 |
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270 |
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if (get_extended_win32_path(src_utf8, &src_w)) |
271 |
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return -1; |
272 |
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if (get_extended_win32_path(dest_utf8, &dest_w)) { |
273 |
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av_free(src_w); |
274 |
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return -1; |
275 |
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} |
276 |
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if (!src_w || !dest_w) { |
277 |
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av_free(src_w); |
278 |
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av_free(dest_w); |
279 |
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goto fallback; |
280 |
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} |
281 |
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282 |
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ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING); |
283 |
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av_free(src_w); |
284 |
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av_free(dest_w); |
285 |
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// Lacking proper mapping from GetLastError() error codes to errno codes |
286 |
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if (ret) |
287 |
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errno = EPERM; |
288 |
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return ret; |
289 |
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290 |
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fallback: |
291 |
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/* filename may be be in CP_ACP */ |
292 |
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#if !HAVE_UWP |
293 |
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ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING); |
294 |
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if (ret) |
295 |
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errno = EPERM; |
296 |
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#else |
297 |
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/* Windows Phone doesn't have MoveFileExA, and for Windows Store apps, |
298 |
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* it is available but not allowed by the app certification kit. However, |
299 |
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* it's unlikely that anybody would input filenames in CP_ACP there, so this |
300 |
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* fallback is kept mostly for completeness. Alternatively we could |
301 |
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* do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing |
302 |
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* explicit conversions with CP_ACP is allegedly forbidden in windows |
303 |
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* store apps (or windows phone), and the notion of a native code page |
304 |
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* doesn't make much sense there. */ |
305 |
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ret = rename(src_utf8, dest_utf8); |
306 |
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#endif |
307 |
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return ret; |
308 |
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} |
309 |
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310 |
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#define mkdir(a, b) win32_mkdir(a) |
311 |
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#define rename win32_rename |
312 |
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#define rmdir win32_rmdir |
313 |
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#define unlink win32_unlink |
314 |
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#define access win32_access |
315 |
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316 |
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#endif |
317 |
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318 |
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#endif /* AVFORMAT_OS_SUPPORT_H */ |
319 |
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