FFmpeg coverage

Line	Branch	Exec	Source
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			#ifdef _WIN32
44			# include <fcntl.h>
45			# include <stdint.h>
46			# ifdef lseek
47			# undef lseek
48			# endif
49			# define lseek(f,p,w) _lseeki64((f), (p), (w))
50			# ifdef stat
51			# undef stat
52			# endif
53
54			# define stat win32_stat
55
56			/*
57			* The POSIX definition for the stat() function uses a struct of the
58			* same name (struct stat), that why it takes this extra effort for
59			* redirecting/replacing the stat() function with our own one which
60			* is capable to handle long path names on Windows.
61			* The struct below roughly follows the POSIX definition. Time values
62			* are 64bit, but in cases when _USE_32BIT_TIME_T is defined, they
63			* will be set to values no larger than INT32_MAX which corresponds
64			* to file times up to the year 2038.
65			*/
66			struct win32_stat
67			{
68			_dev_t st_dev; /* ID of device containing file */
69			_ino_t st_ino; /* inode number */
70			unsigned short st_mode; /* protection */
71			short st_nlink; /* number of hard links */
72			short st_uid; /* user ID of owner */
73			short st_gid; /* group ID of owner */
74			_dev_t st_rdev; /* device ID (if special file) */
75			int64_t st_size; /* total size, in bytes */
76			int64_t st_atime; /* time of last access */
77			int64_t st_mtime; /* time of last modification */
78			int64_t st_ctime; /* time of last status change */
79			};
80
81			# ifdef fstat
82			# undef fstat
83			# endif
84			# define fstat win32_fstat
85			#endif /* defined(_WIN32) */
86
87
88			#ifdef __ANDROID__
89			# if HAVE_UNISTD_H
90			# include <unistd.h>
91			# endif
92			# ifdef lseek
93			# undef lseek
94			# endif
95			# define lseek(f,p,w) lseek64((f), (p), (w))
96			#endif
97
98		9786	static inline int is_dos_path(const char *path)
99			{
100			#if HAVE_DOS_PATHS
101			if (path[0] && path[1] == ':')
102			return 1;
103			#endif
104		9786	return 0;
105			}
106
107			#if defined(_WIN32)
108			#ifndef S_IRUSR
109			#define S_IRUSR S_IREAD
110			#endif
111			#ifndef S_IWUSR
112			#define S_IWUSR S_IWRITE
113			#endif
114			#endif
115
116			#if CONFIG_NETWORK
117			#if defined(_WIN32)
118			#define SHUT_RD SD_RECEIVE
119			#define SHUT_WR SD_SEND
120			#define SHUT_RDWR SD_BOTH
121			#else
122			#include <sys/socket.h>
123			#if !defined(SHUT_RD) /* OS/2, DJGPP */
124			#define SHUT_RD 0
125			#define SHUT_WR 1
126			#define SHUT_RDWR 2
127			#endif
128			#endif
129
130			#if !HAVE_SOCKLEN_T
131			typedef int socklen_t;
132			#endif
133
134			/* most of the time closing a socket is just closing an fd */
135			#if !HAVE_CLOSESOCKET
136			#define closesocket close
137			#endif
138
139			#if !HAVE_POLL_H
140			typedef unsigned long nfds_t;
141
142			#if HAVE_WINSOCK2_H
143			#include <winsock2.h>
144			#endif
145			#if !HAVE_STRUCT_POLLFD
146			struct pollfd {
147			int fd;
148			short events; /* events to look for */
149			short revents; /* events that occurred */
150			};
151
152			/* events & revents */
153			#define POLLIN 0x0001 /* any readable data available */
154			#define POLLOUT 0x0002 /* file descriptor is writeable */
155			#define POLLRDNORM POLLIN
156			#define POLLWRNORM POLLOUT
157			#define POLLRDBAND 0x0008 /* priority readable data */
158			#define POLLWRBAND 0x0010 /* priority data can be written */
159			#define POLLPRI 0x0020 /* high priority readable data */
160
161			/* revents only */
162			#define POLLERR 0x0004 /* errors pending */
163			#define POLLHUP 0x0080 /* disconnected */
164			#define POLLNVAL 0x1000 /* invalid file descriptor */
165			#endif
166
167
168			int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout);
169			#define poll ff_poll
170			#endif /* HAVE_POLL_H */
171			#endif /* CONFIG_NETWORK */
172
173			#ifdef _WIN32
174			#include <stdio.h>
175			#include <windows.h>
176			#include "libavutil/wchar_filename.h"
177
178			#define DEF_FS_FUNCTION(name, wfunc, afunc) \
179			static inline int win32_##name(const char *filename_utf8) \
180			{ \
181			wchar_t *filename_w; \
182			int ret; \
183			\
184			if (get_extended_win32_path(filename_utf8, &filename_w)) \
185			return -1; \
186			if (!filename_w) \
187			goto fallback; \
188			\
189			ret = wfunc(filename_w); \
190			av_free(filename_w); \
191			return ret; \
192			\
193			fallback: \
194			/* filename may be be in CP_ACP */ \
195			return afunc(filename_utf8); \
196			}
197
198			DEF_FS_FUNCTION(unlink, _wunlink, _unlink)
199			DEF_FS_FUNCTION(mkdir, _wmkdir, _mkdir)
200			DEF_FS_FUNCTION(rmdir, _wrmdir , _rmdir)
201
202			static inline int win32_access(const char *filename_utf8, int mode)
203			{
204			wchar_t *filename_w;
205			int ret;
206			if (get_extended_win32_path(filename_utf8, &filename_w))
207			return -1;
208			if (!filename_w)
209			goto fallback;
210			ret = _waccess(filename_w, mode);
211			av_free(filename_w);
212			return ret;
213			fallback:
214			return _access(filename_utf8, mode);
215			}
216
217			static inline void copy_stat(struct _stat64 *crtstat, struct win32_stat *buf)
218			{
219			buf->st_dev = crtstat->st_dev;
220			buf->st_ino = crtstat->st_ino;
221			buf->st_mode = crtstat->st_mode;
222			buf->st_nlink = crtstat->st_nlink;
223			buf->st_uid = crtstat->st_uid;
224			buf->st_gid = crtstat->st_gid;
225			buf->st_rdev = crtstat->st_rdev;
226			buf->st_size = crtstat->st_size;
227			buf->st_atime = crtstat->st_atime;
228			buf->st_mtime = crtstat->st_mtime;
229			buf->st_ctime = crtstat->st_ctime;
230			}
231
232			static inline int win32_stat(const char *filename_utf8, struct win32_stat *buf)
233			{
234			struct _stat64 crtstat = { 0 };
235			wchar_t *filename_w;
236			int ret;
237
238			if (get_extended_win32_path(filename_utf8, &filename_w))
239			return -1;
240
241			if (filename_w) {
242			ret = _wstat64(filename_w, &crtstat);
243			av_free(filename_w);
244			} else
245			ret = _stat64(filename_utf8, &crtstat);
246
247			copy_stat(&crtstat, buf);
248
249			return ret;
250			}
251
252			static inline int win32_fstat(int fd, struct win32_stat *buf)
253			{
254			struct _stat64 crtstat = { 0 };
255			int ret;
256
257			ret = _fstat64(fd, &crtstat);
258
259			copy_stat(&crtstat, buf);
260
261			return ret;
262			}
263
264			static inline int win32_rename(const char *src_utf8, const char *dest_utf8)
265			{
266			wchar_t *src_w, *dest_w;
267			int ret;
268
269			if (get_extended_win32_path(src_utf8, &src_w))
270			return -1;
271			if (get_extended_win32_path(dest_utf8, &dest_w)) {
272			av_free(src_w);
273			return -1;
274			}
275			if (!src_w || !dest_w) {
276			av_free(src_w);
277			av_free(dest_w);
278			goto fallback;
279			}
280
281			ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING);
282			av_free(src_w);
283			av_free(dest_w);
284			// Lacking proper mapping from GetLastError() error codes to errno codes
285			if (ret)
286			errno = EPERM;
287			return ret;
288
289			fallback:
290			/* filename may be be in CP_ACP */
291			#if !HAVE_UWP
292			ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING);
293			if (ret)
294			errno = EPERM;
295			#else
296			/* Windows Phone doesn't have MoveFileExA, and for Windows Store apps,
297			* it is available but not allowed by the app certification kit. However,
298			* it's unlikely that anybody would input filenames in CP_ACP there, so this
299			* fallback is kept mostly for completeness. Alternatively we could
300			* do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing
301			* explicit conversions with CP_ACP is allegedly forbidden in windows
302			* store apps (or windows phone), and the notion of a native code page
303			* doesn't make much sense there. */
304			ret = rename(src_utf8, dest_utf8);
305			#endif
306			return ret;
307			}
308
309			#define mkdir(a, b) win32_mkdir(a)
310			#define rename win32_rename
311			#define rmdir win32_rmdir
312			#define unlink win32_unlink
313			#define access win32_access
314
315			#endif
316
317			#endif /* AVFORMAT_OS_SUPPORT_H */
318