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The MoveFileExA is available in the headers regardless which API subset is targeted, but it is missing in the Windows Phone link libraries. When targeting Windows Store apps, the function is available both in the headers and in the link libraries, and thus there is no indication for the build system that this function should be avoided - such an indication is only given by the Windows App Certification Kit, which forbids using the MoveFileExA function. Therefore check the WINAPI_FAMILY defines instead, to figure out which API subset is targeted. Signed-off-by: Martin Storsjö <martin@martin.st>
221 lines
6.1 KiB
C
221 lines
6.1 KiB
C
/*
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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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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>
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#endif
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#endif
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#if defined(_WIN32) && !defined(__MINGW32CE__)
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# include <fcntl.h>
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# undef lseek
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# define lseek(f,p,w) _lseeki64((f), (p), (w))
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# undef stat
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# define stat _stati64
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# undef fstat
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# define fstat(f,s) _fstati64((f), (s))
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#endif /* defined(_WIN32) && !defined(__MINGW32CE__) */
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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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return 0;
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}
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#if defined(__OS2__) || defined(__Plan9__)
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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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#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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#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 !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
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#if !HAVE_STRUCT_POLLFD
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struct pollfd {
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int fd;
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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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#if defined(__MINGW32CE__)
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#define mkdir(a, b) _mkdir(a)
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#elif defined(_WIN32)
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#include <stdio.h>
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#include <windows.h>
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#include "libavutil/wchar_filename.h"
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#ifdef WINAPI_FAMILY
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#include <winapifamily.h>
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// If a WINAPI_FAMILY is defined, check that the desktop API subset
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// is enabled
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#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
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#define USE_MOVEFILEEXA
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#endif
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#else
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// If no WINAPI_FAMILY is defined, assume the full API subset
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#define USE_MOVEFILEEXA
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#endif
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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 (utf8towchar(filename_utf8, &filename_w)) \
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return -1; \
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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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}
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DEF_FS_FUNCTION(unlink, _wunlink, _unlink)
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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_rename(const char *src_utf8, const char *dest_utf8)
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{
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wchar_t *src_w, *dest_w;
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int ret;
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if (utf8towchar(src_utf8, &src_w))
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return -1;
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if (utf8towchar(dest_utf8, &dest_w)) {
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av_free(src_w);
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return -1;
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}
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if (!src_w || !dest_w) {
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av_free(src_w);
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av_free(dest_w);
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goto fallback;
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}
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ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING);
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av_free(src_w);
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av_free(dest_w);
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// Lacking proper mapping from GetLastError() error codes to errno codes
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if (ret)
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errno = EPERM;
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return ret;
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fallback:
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/* filename may be be in CP_ACP */
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#ifdef USE_MOVEFILEEXA
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ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING);
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if (ret)
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errno = EPERM;
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#else
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/* Windows Phone doesn't have MoveFileExA, and for Windows Store apps,
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* it is available but not allowed by the app certification kit. However,
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* it's unlikely that anybody would input filenames in CP_ACP there, so this
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* fallback is kept mostly for completeness. Alternatively we could
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* do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing
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* explicit conversions with CP_ACP is allegedly forbidden in windows
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* store apps (or windows phone), and the notion of a native code page
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* doesn't make much sense there. */
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ret = rename(src_utf8, dest_utf8);
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#endif
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return ret;
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}
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#define mkdir(a, b) win32_mkdir(a)
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#define rename win32_rename
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#define rmdir win32_rmdir
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#define unlink win32_unlink
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#endif
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#endif /* AVFORMAT_OS_SUPPORT_H */
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