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mpv/osdep/io.h
James Ross-Gowan 257a2b9646 win32: add more-POSIXy versions of open() and fstat()
Directory-opening never worked on Windows because MSVCRT's open()
doesn't open directories and its fstat() doesn't recognise directory
handles. These are just MSVCRT restrictions, and the Windows API itself
has no problem with opening directories as file objects, so reimplement
mpv's mp_open and mp_stat to use the Windows API directly. This should
fix directory playback.

This also populates the st_dev and st_ino fields of struct stat, so
filesystem loop checking in demux_playlist.c should now work on Windows.

Fixes #4711
2017-10-25 22:37:20 +11:00

202 lines
5.1 KiB
C

/*
* unicode/utf-8 I/O helpers and wrappers for Windows
*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MPLAYER_OSDEP_IO
#define MPLAYER_OSDEP_IO
#include "config.h"
#include <stdbool.h>
#include <stdint.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#if HAVE_GLOB_POSIX
#include <glob.h>
#endif
#ifdef __ANDROID__
# include <unistd.h>
# include <stdio.h>
// replace lseek with the 64bit variant
#ifdef lseek
# undef lseek
#endif
#define lseek(f,p,w) lseek64((f), (p), (w))
// replace possible fseeko with a
// lseek64 based solution.
#ifdef fseeko
# undef fseeko
#endif
static inline int mp_fseeko(FILE* fp, off64_t offset, int whence) {
int ret = -1;
if ((ret = fflush(fp)) != 0) {
return ret;
}
return lseek64(fileno(fp), offset, whence) >= 0 ? 0 : -1;
}
#define fseeko(f,p,w) mp_fseeko((f), (p), (w))
#endif // __ANDROID__
#ifndef O_BINARY
#define O_BINARY 0
#endif
// This is in POSIX.1-2008, but support outside of Linux is scarce.
#ifndef O_CLOEXEC
#define O_CLOEXEC 0
#endif
#ifndef FD_CLOEXEC
#define FD_CLOEXEC 0
#endif
bool mp_set_cloexec(int fd);
int mp_make_cloexec_pipe(int pipes[2]);
int mp_make_wakeup_pipe(int pipes[2]);
void mp_flush_wakeup_pipe(int pipe_end);
#ifdef _WIN32
#include <wchar.h>
wchar_t *mp_from_utf8(void *talloc_ctx, const char *s);
char *mp_to_utf8(void *talloc_ctx, const wchar_t *s);
#endif
#ifdef __CYGWIN__
#include <io.h>
#endif
#ifdef __MINGW32__
#include <stdio.h>
#include <dirent.h>
#include <sys/stat.h>
#include <fcntl.h>
int mp_printf(const char *format, ...);
int mp_fprintf(FILE *stream, const char *format, ...);
int mp_open(const char *filename, int oflag, ...);
int mp_creat(const char *filename, int mode);
FILE *mp_fopen(const char *filename, const char *mode);
DIR *mp_opendir(const char *path);
struct dirent *mp_readdir(DIR *dir);
int mp_closedir(DIR *dir);
int mp_mkdir(const char *path, int mode);
char *mp_win32_getcwd(char *buf, size_t size);
FILE *mp_tmpfile(void);
char *mp_getenv(const char *name);
off_t mp_lseek(int fd, off_t offset, int whence);
// mp_stat types. MSVCRT's dev_t and ino_t are way too short to be unique.
typedef uint64_t mp_dev_t_;
#ifdef _WIN64
typedef unsigned __int128 mp_ino_t_;
#else
// 32-bit Windows doesn't have a __int128-type, which means ReFS file IDs will
// be truncated and might collide. This is probably not a problem because ReFS
// is not available in consumer versions of Windows.
typedef uint64_t mp_ino_t_;
#endif
#define dev_t mp_dev_t_
#define ino_t mp_ino_t_
// mp_stat uses a different structure to MSVCRT, with 64-bit inodes
struct mp_stat {
dev_t st_dev;
ino_t st_ino;
unsigned short st_mode;
unsigned int st_nlink;
short st_uid;
short st_gid;
dev_t st_rdev;
int64_t st_size;
time_t st_atime;
time_t st_mtime;
time_t st_ctime;
};
int mp_stat(const char *path, struct mp_stat *buf);
int mp_fstat(int fd, struct mp_stat *buf);
typedef struct {
size_t gl_pathc;
char **gl_pathv;
size_t gl_offs;
void *ctx;
} mp_glob_t;
// glob-win.c
int mp_glob(const char *restrict pattern, int flags,
int (*errfunc)(const char*, int), mp_glob_t *restrict pglob);
void mp_globfree(mp_glob_t *pglob);
#define printf(...) mp_printf(__VA_ARGS__)
#define fprintf(...) mp_fprintf(__VA_ARGS__)
#define open(...) mp_open(__VA_ARGS__)
#define creat(...) mp_creat(__VA_ARGS__)
#define fopen(...) mp_fopen(__VA_ARGS__)
#define opendir(...) mp_opendir(__VA_ARGS__)
#define readdir(...) mp_readdir(__VA_ARGS__)
#define closedir(...) mp_closedir(__VA_ARGS__)
#define mkdir(...) mp_mkdir(__VA_ARGS__)
#define getcwd(...) mp_win32_getcwd(__VA_ARGS__)
#define tmpfile(...) mp_tmpfile(__VA_ARGS__)
#define getenv(...) mp_getenv(__VA_ARGS__)
#undef lseek
#define lseek(...) mp_lseek(__VA_ARGS__)
// Affects both "stat()" and "struct stat".
#undef stat
#define stat mp_stat
#undef fstat
#define fstat(...) mp_fstat(__VA_ARGS__)
void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);
int munmap(void *addr, size_t length);
int msync(void *addr, size_t length, int flags);
#define PROT_READ 1
#define PROT_WRITE 2
#define MAP_SHARED 1
#define MAP_FAILED ((void *)-1)
#define MS_ASYNC 1
#define MS_SYNC 2
#define MS_INVALIDATE 4
#ifndef GLOB_NOMATCH
#define GLOB_NOMATCH 3
#endif
#define glob_t mp_glob_t
#define glob(...) mp_glob(__VA_ARGS__)
#define globfree(...) mp_globfree(__VA_ARGS__)
#else /* __MINGW32__ */
#include <sys/mman.h>
#endif /* __MINGW32__ */
#endif