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		10006	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		10006	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/mem.h"
177			#include "libavutil/wchar_filename.h"
178
179			#define DEF_FS_FUNCTION(name, wfunc, afunc) \
180			static inline int win32_##name(const char *filename_utf8) \
181			{ \
182			wchar_t *filename_w; \
183			int ret; \
184			\
185			if (get_extended_win32_path(filename_utf8, &filename_w)) \
186			return -1; \
187			if (!filename_w) \
188			goto fallback; \
189			\
190			ret = wfunc(filename_w); \
191			av_free(filename_w); \
192			return ret; \
193			\
194			fallback: \
195			/* filename may be be in CP_ACP */ \
196			return afunc(filename_utf8); \
197			}
198
199			DEF_FS_FUNCTION(unlink, _wunlink, _unlink)
200			DEF_FS_FUNCTION(mkdir, _wmkdir, _mkdir)
201			DEF_FS_FUNCTION(rmdir, _wrmdir , _rmdir)
202
203			static inline int win32_access(const char *filename_utf8, int mode)
204			{
205			wchar_t *filename_w;
206			int ret;
207			if (get_extended_win32_path(filename_utf8, &filename_w))
208			return -1;
209			if (!filename_w)
210			goto fallback;
211			ret = _waccess(filename_w, mode);
212			av_free(filename_w);
213			return ret;
214			fallback:
215			return _access(filename_utf8, mode);
216			}
217
218			static inline void copy_stat(struct _stat64 *crtstat, struct win32_stat *buf)
219			{
220			buf->st_dev = crtstat->st_dev;
221			buf->st_ino = crtstat->st_ino;
222			buf->st_mode = crtstat->st_mode;
223			buf->st_nlink = crtstat->st_nlink;
224			buf->st_uid = crtstat->st_uid;
225			buf->st_gid = crtstat->st_gid;
226			buf->st_rdev = crtstat->st_rdev;
227			buf->st_size = crtstat->st_size;
228			buf->st_atime = crtstat->st_atime;
229			buf->st_mtime = crtstat->st_mtime;
230			buf->st_ctime = crtstat->st_ctime;
231			}
232
233			static inline int win32_stat(const char *filename_utf8, struct win32_stat *buf)
234			{
235			struct _stat64 crtstat = { 0 };
236			wchar_t *filename_w;
237			int ret;
238
239			if (get_extended_win32_path(filename_utf8, &filename_w))
240			return -1;
241
242			if (filename_w) {
243			ret = _wstat64(filename_w, &crtstat);
244			av_free(filename_w);
245			} else
246			ret = _stat64(filename_utf8, &crtstat);
247
248			copy_stat(&crtstat, buf);
249
250			return ret;
251			}
252
253			static inline int win32_fstat(int fd, struct win32_stat *buf)
254			{
255			struct _stat64 crtstat = { 0 };
256			int ret;
257
258			ret = _fstat64(fd, &crtstat);
259
260			copy_stat(&crtstat, buf);
261
262			return ret;
263			}
264
265			static inline int win32_rename(const char *src_utf8, const char *dest_utf8)
266			{
267			wchar_t *src_w, *dest_w;
268			int ret;
269
270			if (get_extended_win32_path(src_utf8, &src_w))
271			return -1;
272			if (get_extended_win32_path(dest_utf8, &dest_w)) {
273			av_free(src_w);
274			return -1;
275			}
276			if (!src_w || !dest_w) {
277			av_free(src_w);
278			av_free(dest_w);
279			goto fallback;
280			}
281
282			ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING);
283			av_free(src_w);
284			av_free(dest_w);
285			// Lacking proper mapping from GetLastError() error codes to errno codes
286			if (ret)
287			errno = EPERM;
288			return ret;
289
290			fallback:
291			/* filename may be be in CP_ACP */
292			#if !HAVE_UWP
293			ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING);
294			if (ret)
295			errno = EPERM;
296			#else
297			/* Windows Phone doesn't have MoveFileExA, and for Windows Store apps,
298			* it is available but not allowed by the app certification kit. However,
299			* it's unlikely that anybody would input filenames in CP_ACP there, so this
300			* fallback is kept mostly for completeness. Alternatively we could
301			* do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing
302			* explicit conversions with CP_ACP is allegedly forbidden in windows
303			* store apps (or windows phone), and the notion of a native code page
304			* doesn't make much sense there. */
305			ret = rename(src_utf8, dest_utf8);
306			#endif
307			return ret;
308			}
309
310			#define mkdir(a, b) win32_mkdir(a)
311			#define rename win32_rename
312			#define rmdir win32_rmdir
313			#define unlink win32_unlink
314			#define access win32_access
315
316			#endif
317
318			#endif /* AVFORMAT_OS_SUPPORT_H */
319