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libretro-common/vfs/vfs_implementation.c
twinaphex eb695bd459 Resync
2021-08-03 20:15:44 +02:00

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/* Copyright (C) 2010-2020 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (vfs_implementation.c).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <string/stdstring.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if defined(_WIN32)
# ifdef _MSC_VER
# define setmode _setmode
# endif
#include <sys/stat.h>
# ifdef _XBOX
# include <xtl.h>
# define INVALID_FILE_ATTRIBUTES -1
# else
# include <fcntl.h>
# include <direct.h>
# include <windows.h>
# endif
# include <io.h>
#else
# if defined(PSP)
# include <pspiofilemgr.h>
# endif
# include <sys/types.h>
# include <sys/stat.h>
# if !defined(VITA)
# include <dirent.h>
# endif
# include <unistd.h>
# if defined(ORBIS)
# include <sys/fcntl.h>
# include <sys/dirent.h>
# include <orbisFile.h>
# endif
# if defined(WIIU)
# include <malloc.h>
# endif
#endif
#include <fcntl.h>
/* TODO: Some things are duplicated but I'm really afraid of breaking other platforms by touching this */
#if defined(VITA)
# include <psp2/io/fcntl.h>
# include <psp2/io/dirent.h>
# include <psp2/io/stat.h>
#elif defined(ORBIS)
# include <orbisFile.h>
# include <ps4link.h>
# include <sys/dirent.h>
# include <sys/fcntl.h>
#elif !defined(_WIN32)
# if defined(PSP)
# include <pspiofilemgr.h>
# endif
# include <sys/types.h>
# include <sys/stat.h>
# include <dirent.h>
# include <unistd.h>
#endif
#if defined(__QNX__) || defined(PSP)
#include <unistd.h> /* stat() is defined here */
#endif
#ifdef __APPLE__
#include <CoreFoundation/CoreFoundation.h>
#endif
#ifdef __HAIKU__
#include <kernel/image.h>
#endif
#ifndef __MACH__
#include <compat/strl.h>
#include <compat/posix_string.h>
#endif
#include <compat/strcasestr.h>
#include <retro_miscellaneous.h>
#include <encodings/utf.h>
#if defined(_WIN32)
#ifndef _XBOX
#if defined(_MSC_VER) && _MSC_VER <= 1200
#define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
#endif
#endif
#elif defined(VITA)
#define SCE_ERROR_ERRNO_EEXIST 0x80010011
#include <psp2/io/fcntl.h>
#include <psp2/io/dirent.h>
#include <psp2/io/stat.h>
#else
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#endif
#if defined(ORBIS)
#include <orbisFile.h>
#include <sys/fcntl.h>
#include <sys/dirent.h>
#endif
#if defined(PSP)
#include <pspkernel.h>
#endif
#if defined(__PS3__) || defined(__PSL1GHT__)
#include <defines/ps3_defines.h>
#if defined(__PSL1GHT__)
#include <lv2/sysfs.h>
#endif
#endif
#if defined(VITA)
#define FIO_S_ISDIR SCE_S_ISDIR
#endif
#if defined(__QNX__) || defined(PSP)
#include <unistd.h> /* stat() is defined here */
#endif
/* Assume W-functions do not work below Win2K and Xbox platforms */
#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500 || defined(_XBOX)
#ifndef LEGACY_WIN32
#define LEGACY_WIN32
#endif
#endif
#if defined(_WIN32)
#if defined(_MSC_VER) && _MSC_VER >= 1400
#define ATLEAST_VC2005
#endif
#endif
#include <vfs/vfs_implementation.h>
#include <libretro.h>
#include <memmap.h>
#include <encodings/utf.h>
#include <compat/fopen_utf8.h>
#include <file/file_path.h>
#ifdef HAVE_CDROM
#include <vfs/vfs_implementation_cdrom.h>
#endif
#if (defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE - 0) >= 200112) || (defined(__POSIX_VISIBLE) && __POSIX_VISIBLE >= 200112) || (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112) || __USE_LARGEFILE || (defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64)
#ifndef HAVE_64BIT_OFFSETS
#define HAVE_64BIT_OFFSETS
#endif
#endif
#define RFILE_HINT_UNBUFFERED (1 << 8)
int64_t retro_vfs_file_seek_internal(
libretro_vfs_implementation_file *stream,
int64_t offset, int whence)
{
if (!stream)
return -1;
if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
{
#ifdef HAVE_CDROM
if (stream->scheme == VFS_SCHEME_CDROM)
return retro_vfs_file_seek_cdrom(stream, offset, whence);
#endif
#ifdef ATLEAST_VC2005
/* VC2005 and up have a special 64-bit fseek */
return _fseeki64(stream->fp, offset, whence);
#elif defined(ORBIS)
{
int ret = orbisLseek(stream->fd, offset, whence);
if (ret < 0)
return -1;
return 0;
}
#elif defined(HAVE_64BIT_OFFSETS)
return fseeko(stream->fp, (off_t)offset, whence);
#else
return fseek(stream->fp, (long)offset, whence);
#endif
}
#ifdef HAVE_MMAP
/* Need to check stream->mapped because this function is
* called in filestream_open() */
if (stream->mapped && stream->hints &
RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
{
/* fseek() returns error on under/overflow but
* allows cursor > EOF for
read-only file descriptors. */
switch (whence)
{
case SEEK_SET:
if (offset < 0)
return -1;
stream->mappos = offset;
break;
case SEEK_CUR:
if ( (offset < 0 && stream->mappos + offset > stream->mappos) ||
(offset > 0 && stream->mappos + offset < stream->mappos))
return -1;
stream->mappos += offset;
break;
case SEEK_END:
if (stream->mapsize + offset < stream->mapsize)
return -1;
stream->mappos = stream->mapsize + offset;
break;
}
return stream->mappos;
}
#endif
if (lseek(stream->fd, (off_t)offset, whence) < 0)
return -1;
return 0;
}
/**
* retro_vfs_file_open_impl:
* @path : path to file
* @mode : file mode to use when opening (read/write)
* @hints :
*
* Opens a file for reading or writing, depending on the requested mode.
* Returns a pointer to an RFILE if opened successfully, otherwise NULL.
**/
libretro_vfs_implementation_file *retro_vfs_file_open_impl(
const char *path, unsigned mode, unsigned hints)
{
#if defined(VFS_FRONTEND) || defined(HAVE_CDROM)
int path_len = (int)strlen(path);
#endif
#ifdef VFS_FRONTEND
const char *dumb_prefix = "vfsonly://";
size_t dumb_prefix_siz = STRLEN_CONST("vfsonly://");
int dumb_prefix_len = (int)dumb_prefix_siz;
#endif
#ifdef HAVE_CDROM
const char *cdrom_prefix = "cdrom://";
size_t cdrom_prefix_siz = STRLEN_CONST("cdrom://");
int cdrom_prefix_len = (int)cdrom_prefix_siz;
#endif
int flags = 0;
const char *mode_str = NULL;
libretro_vfs_implementation_file *stream =
(libretro_vfs_implementation_file*)
malloc(sizeof(*stream));
if (!stream)
return NULL;
stream->fd = 0;
stream->hints = hints;
stream->size = 0;
stream->buf = NULL;
stream->fp = NULL;
#ifdef _WIN32
stream->fh = 0;
#endif
stream->orig_path = NULL;
stream->mappos = 0;
stream->mapsize = 0;
stream->mapped = NULL;
stream->scheme = VFS_SCHEME_NONE;
#ifdef VFS_FRONTEND
if (path_len >= dumb_prefix_len)
if (!memcmp(path, dumb_prefix, dumb_prefix_len))
path += dumb_prefix_siz;
#endif
#ifdef HAVE_CDROM
stream->cdrom.cue_buf = NULL;
stream->cdrom.cue_len = 0;
stream->cdrom.byte_pos = 0;
stream->cdrom.drive = 0;
stream->cdrom.cur_min = 0;
stream->cdrom.cur_sec = 0;
stream->cdrom.cur_frame = 0;
stream->cdrom.cur_track = 0;
stream->cdrom.cur_lba = 0;
stream->cdrom.last_frame_lba = 0;
stream->cdrom.last_frame[0] = '\0';
stream->cdrom.last_frame_valid = false;
if (path_len > cdrom_prefix_len)
{
if (!memcmp(path, cdrom_prefix, cdrom_prefix_len))
{
path += cdrom_prefix_siz;
stream->scheme = VFS_SCHEME_CDROM;
}
}
#endif
stream->orig_path = strdup(path);
#ifdef HAVE_MMAP
if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS && mode == RETRO_VFS_FILE_ACCESS_READ)
stream->hints |= RFILE_HINT_UNBUFFERED;
else
#endif
stream->hints &= ~RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS;
switch (mode)
{
case RETRO_VFS_FILE_ACCESS_READ:
mode_str = "rb";
flags = O_RDONLY;
#ifdef _WIN32
flags |= O_BINARY;
#endif
break;
case RETRO_VFS_FILE_ACCESS_WRITE:
mode_str = "wb";
flags = O_WRONLY | O_CREAT | O_TRUNC;
#if !defined(ORBIS)
#if !defined(_WIN32)
flags |= S_IRUSR | S_IWUSR;
#else
flags |= O_BINARY;
#endif
#endif
break;
case RETRO_VFS_FILE_ACCESS_READ_WRITE:
mode_str = "w+b";
flags = O_RDWR | O_CREAT | O_TRUNC;
#if !defined(ORBIS)
#if !defined(_WIN32)
flags |= S_IRUSR | S_IWUSR;
#else
flags |= O_BINARY;
#endif
#endif
break;
case RETRO_VFS_FILE_ACCESS_WRITE | RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING:
case RETRO_VFS_FILE_ACCESS_READ_WRITE | RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING:
mode_str = "r+b";
flags = O_RDWR;
#if !defined(ORBIS)
#if !defined(_WIN32)
flags |= S_IRUSR | S_IWUSR;
#else
flags |= O_BINARY;
#endif
#endif
break;
default:
goto error;
}
if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
{
#ifdef ORBIS
int fd = orbisOpen(path, flags, 0644);
if (fd < 0)
{
stream->fd = -1;
goto error;
}
stream->fd = fd;
#else
FILE *fp;
#ifdef HAVE_CDROM
if (stream->scheme == VFS_SCHEME_CDROM)
{
retro_vfs_file_open_cdrom(stream, path, mode, hints);
#if defined(_WIN32) && !defined(_XBOX)
if (!stream->fh)
goto error;
#else
if (!stream->fp)
goto error;
#endif
}
else
#endif
{
fp = (FILE*)fopen_utf8(path, mode_str);
if (!fp)
goto error;
stream->fp = fp;
}
/* Regarding setvbuf:
*
* https://www.freebsd.org/cgi/man.cgi?query=setvbuf&apropos=0&sektion=0&manpath=FreeBSD+11.1-RELEASE&arch=default&format=html
*
* If the size argument is not zero but buf is NULL,
* a buffer of the given size will be allocated immediately, and
* released on close. This is an extension to ANSI C.
*
* Since C89 does not support specifying a NULL buffer
* with a non-zero size, we create and track our own buffer for it.
*/
/* TODO: this is only useful for a few platforms,
* find which and add ifdef */
#if defined(_3DS)
if (stream->scheme != VFS_SCHEME_CDROM)
{
stream->buf = (char*)calloc(1, 0x10000);
if (stream->fp)
setvbuf(stream->fp, stream->buf, _IOFBF, 0x10000);
}
#elif defined(WIIU)
if (stream->scheme != VFS_SCHEME_CDROM)
{
const int bufsize = 128*1024;
stream->buf = (char*)memalign(0x40, bufsize);
if (stream->fp)
setvbuf(stream->fp, stream->buf, _IOFBF, bufsize);
}
#elif !defined(PSP)
if (stream->scheme != VFS_SCHEME_CDROM)
{
stream->buf = (char*)calloc(1, 0x4000);
if (stream->fp)
setvbuf(stream->fp, stream->buf, _IOFBF, 0x4000);
}
#endif
#endif
}
else
{
#if defined(_WIN32) && !defined(_XBOX)
#if defined(LEGACY_WIN32)
char *path_local = utf8_to_local_string_alloc(path);
stream->fd = open(path_local, flags, 0);
if (path_local)
free(path_local);
#else
wchar_t * path_wide = utf8_to_utf16_string_alloc(path);
stream->fd = _wopen(path_wide, flags, 0);
if (path_wide)
free(path_wide);
#endif
#else
stream->fd = open(path, flags, 0);
#endif
if (stream->fd == -1)
goto error;
#ifdef HAVE_MMAP
if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
{
stream->mappos = 0;
stream->mapped = NULL;
stream->mapsize = retro_vfs_file_seek_internal(stream, 0, SEEK_END);
if (stream->mapsize == (uint64_t)-1)
goto error;
retro_vfs_file_seek_internal(stream, 0, SEEK_SET);
stream->mapped = (uint8_t*)mmap((void*)0,
stream->mapsize, PROT_READ, MAP_SHARED, stream->fd, 0);
if (stream->mapped == MAP_FAILED)
stream->hints &= ~RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS;
}
#endif
}
#ifdef ORBIS
stream->size = orbisLseek(stream->fd, 0, SEEK_END);
orbisLseek(stream->fd, 0, SEEK_SET);
#else
#ifdef HAVE_CDROM
if (stream->scheme == VFS_SCHEME_CDROM)
{
retro_vfs_file_seek_cdrom(stream, 0, SEEK_SET);
retro_vfs_file_seek_cdrom(stream, 0, SEEK_END);
stream->size = retro_vfs_file_tell_impl(stream);
retro_vfs_file_seek_cdrom(stream, 0, SEEK_SET);
}
else
#endif
{
retro_vfs_file_seek_internal(stream, 0, SEEK_SET);
retro_vfs_file_seek_internal(stream, 0, SEEK_END);
stream->size = retro_vfs_file_tell_impl(stream);
retro_vfs_file_seek_internal(stream, 0, SEEK_SET);
}
#endif
return stream;
error:
retro_vfs_file_close_impl(stream);
return NULL;
}
int retro_vfs_file_close_impl(libretro_vfs_implementation_file *stream)
{
if (!stream)
return -1;
#ifdef HAVE_CDROM
if (stream->scheme == VFS_SCHEME_CDROM)
{
retro_vfs_file_close_cdrom(stream);
goto end;
}
#endif
if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
{
if (stream->fp)
fclose(stream->fp);
}
else
{
#ifdef HAVE_MMAP
if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
munmap(stream->mapped, stream->mapsize);
#endif
}
if (stream->fd > 0)
{
#ifdef ORBIS
orbisClose(stream->fd);
stream->fd = -1;
#else
close(stream->fd);
#endif
}
#ifdef HAVE_CDROM
end:
if (stream->cdrom.cue_buf)
free(stream->cdrom.cue_buf);
#endif
if (stream->buf)
free(stream->buf);
if (stream->orig_path)
free(stream->orig_path);
free(stream);
return 0;
}
int retro_vfs_file_error_impl(libretro_vfs_implementation_file *stream)
{
#ifdef HAVE_CDROM
if (stream->scheme == VFS_SCHEME_CDROM)
return retro_vfs_file_error_cdrom(stream);
#endif
#ifdef ORBIS
/* TODO/FIXME - implement this? */
return 0;
#else
return ferror(stream->fp);
#endif
}
int64_t retro_vfs_file_size_impl(libretro_vfs_implementation_file *stream)
{
if (stream)
return stream->size;
return 0;
}
int64_t retro_vfs_file_truncate_impl(libretro_vfs_implementation_file *stream, int64_t length)
{
if (!stream)
return -1;
#ifdef _WIN32
if (_chsize(_fileno(stream->fp), length) != 0)
return -1;
#elif !defined(VITA) && !defined(PSP) && !defined(PS2) && !defined(ORBIS) && (!defined(SWITCH) || defined(HAVE_LIBNX))
if (ftruncate(fileno(stream->fp), (off_t)length) != 0)
return -1;
#endif
return 0;
}
int64_t retro_vfs_file_tell_impl(libretro_vfs_implementation_file *stream)
{
if (!stream)
return -1;
if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
{
#ifdef HAVE_CDROM
if (stream->scheme == VFS_SCHEME_CDROM)
return retro_vfs_file_tell_cdrom(stream);
#endif
#ifdef ORBIS
{
int64_t ret = orbisLseek(stream->fd, 0, SEEK_CUR);
if (ret < 0)
return -1;
return ret;
}
#else
#ifdef ATLEAST_VC2005
/* VC2005 and up have a special 64-bit ftell */
return _ftelli64(stream->fp);
#elif defined(HAVE_64BIT_OFFSETS)
return ftello(stream->fp);
#else
return ftell(stream->fp);
#endif
#endif
}
#ifdef HAVE_MMAP
/* Need to check stream->mapped because this function
* is called in filestream_open() */
if (stream->mapped && stream->hints &
RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
return stream->mappos;
#endif
if (lseek(stream->fd, 0, SEEK_CUR) < 0)
return -1;
return 0;
}
int64_t retro_vfs_file_seek_impl(libretro_vfs_implementation_file *stream,
int64_t offset, int seek_position)
{
int whence = -1;
switch (seek_position)
{
case RETRO_VFS_SEEK_POSITION_START:
whence = SEEK_SET;
break;
case RETRO_VFS_SEEK_POSITION_CURRENT:
whence = SEEK_CUR;
break;
case RETRO_VFS_SEEK_POSITION_END:
whence = SEEK_END;
break;
}
return retro_vfs_file_seek_internal(stream, offset, whence);
}
int64_t retro_vfs_file_read_impl(libretro_vfs_implementation_file *stream,
void *s, uint64_t len)
{
if (!stream || !s)
return -1;
if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
{
#ifdef HAVE_CDROM
if (stream->scheme == VFS_SCHEME_CDROM)
return retro_vfs_file_read_cdrom(stream, s, len);
#endif
#ifdef ORBIS
if (orbisRead(stream->fd, s, (size_t)len) < 0)
return -1;
return 0;
#else
return fread(s, 1, (size_t)len, stream->fp);
#endif
}
#ifdef HAVE_MMAP
if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
{
if (stream->mappos > stream->mapsize)
return -1;
if (stream->mappos + len > stream->mapsize)
len = stream->mapsize - stream->mappos;
memcpy(s, &stream->mapped[stream->mappos], len);
stream->mappos += len;
return len;
}
#endif
return read(stream->fd, s, (size_t)len);
}
int64_t retro_vfs_file_write_impl(libretro_vfs_implementation_file *stream, const void *s, uint64_t len)
{
if (!stream)
return -1;
if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
{
#ifdef ORBIS
if (orbisWrite(stream->fd, s, (size_t)len) < 0)
return -1;
return 0;
#else
return fwrite(s, 1, (size_t)len, stream->fp);
#endif
}
#ifdef HAVE_MMAP
if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
return -1;
#endif
return write(stream->fd, s, (size_t)len);
}
int retro_vfs_file_flush_impl(libretro_vfs_implementation_file *stream)
{
if (!stream)
return -1;
#ifdef ORBIS
return 0;
#else
return fflush(stream->fp) == 0 ? 0 : -1;
#endif
}
int retro_vfs_file_remove_impl(const char *path)
{
#if defined(_WIN32) && !defined(_XBOX)
/* Win32 (no Xbox) */
#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
char *path_local = NULL;
#else
wchar_t *path_wide = NULL;
#endif
if (!path || !*path)
return -1;
#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
path_local = utf8_to_local_string_alloc(path);
if (path_local)
{
int ret = remove(path_local);
free(path_local);
if (ret == 0)
return 0;
}
#else
path_wide = utf8_to_utf16_string_alloc(path);
if (path_wide)
{
int ret = _wremove(path_wide);
free(path_wide);
if (ret == 0)
return 0;
}
#endif
return -1;
#elif defined(ORBIS)
/* Orbis
* TODO/FIXME - stub for now */
return 0;
#else
if (remove(path) == 0)
return 0;
return -1;
#endif
}
int retro_vfs_file_rename_impl(const char *old_path, const char *new_path)
{
#if defined(_WIN32) && !defined(_XBOX)
/* Win32 (no Xbox) */
int ret = -1;
#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
char *old_path_local = NULL;
#else
wchar_t *old_path_wide = NULL;
#endif
if (!old_path || !*old_path || !new_path || !*new_path)
return -1;
#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
old_path_local = utf8_to_local_string_alloc(old_path);
if (old_path_local)
{
char *new_path_local = utf8_to_local_string_alloc(new_path);
if (new_path_local)
{
if (rename(old_path_local, new_path_local) == 0)
ret = 0;
free(new_path_local);
}
free(old_path_local);
}
#else
old_path_wide = utf8_to_utf16_string_alloc(old_path);
if (old_path_wide)
{
wchar_t *new_path_wide = utf8_to_utf16_string_alloc(new_path);
if (new_path_wide)
{
if (_wrename(old_path_wide, new_path_wide) == 0)
ret = 0;
free(new_path_wide);
}
free(old_path_wide);
}
#endif
return ret;
#elif defined(ORBIS)
/* Orbis */
/* TODO/FIXME - Stub for now */
if (!old_path || !*old_path || !new_path || !*new_path)
return -1;
return 0;
#else
/* Every other platform */
if (!old_path || !*old_path || !new_path || !*new_path)
return -1;
return rename(old_path, new_path) == 0 ? 0 : -1;
#endif
}
const char *retro_vfs_file_get_path_impl(
libretro_vfs_implementation_file *stream)
{
/* should never happen, do something noisy so caller can be fixed */
if (!stream)
abort();
return stream->orig_path;
}
int retro_vfs_stat_impl(const char *path, int32_t *size)
{
bool is_dir = false;
bool is_character_special = false;
#if defined(VITA) || defined(PSP)
/* Vita / PSP */
SceIoStat buf;
int dir_ret;
char *tmp = NULL;
size_t len = 0;
if (!path || !*path)
return 0;
tmp = strdup(path);
len = strlen(tmp);
if (tmp[len-1] == '/')
tmp[len-1] = '\0';
dir_ret = sceIoGetstat(tmp, &buf);
free(tmp);
if (dir_ret < 0)
return 0;
if (size)
*size = (int32_t)buf.st_size;
is_dir = FIO_S_ISDIR(buf.st_mode);
#elif defined(ORBIS)
/* Orbis */
int dir_ret = 0;
if (!path || !*path)
return 0;
if (size)
*size = (int32_t)buf.st_size;
dir_ret = orbisDopen(path);
is_dir = dir_ret > 0;
orbisDclose(dir_ret);
is_character_special = S_ISCHR(buf.st_mode);
#elif defined(__PSL1GHT__) || defined(__PS3__)
/* Lowlevel Lv2 */
sysFSStat buf;
if (!path || !*path)
return 0;
if (sysFsStat(path, &buf) < 0)
return 0;
if (size)
*size = (int32_t)buf.st_size;
is_dir = ((buf.st_mode & S_IFMT) == S_IFDIR);
#elif defined(_WIN32)
/* Windows */
DWORD file_info;
struct _stat buf;
#if defined(LEGACY_WIN32)
char *path_local = NULL;
#else
wchar_t *path_wide = NULL;
#endif
if (!path || !*path)
return 0;
#if defined(LEGACY_WIN32)
path_local = utf8_to_local_string_alloc(path);
file_info = GetFileAttributes(path_local);
if (!string_is_empty(path_local))
_stat(path_local, &buf);
if (path_local)
free(path_local);
#else
path_wide = utf8_to_utf16_string_alloc(path);
file_info = GetFileAttributesW(path_wide);
_wstat(path_wide, &buf);
if (path_wide)
free(path_wide);
#endif
if (file_info == INVALID_FILE_ATTRIBUTES)
return 0;
if (size)
*size = (int32_t)buf.st_size;
is_dir = (file_info & FILE_ATTRIBUTE_DIRECTORY);
#elif defined(GEKKO)
/* On GEKKO platforms, paths cannot have
* trailing slashes - we must therefore
* remove them */
char *path_buf = NULL;
int stat_ret = -1;
struct stat stat_buf;
size_t len;
if (string_is_empty(path))
return 0;
path_buf = strdup(path);
if (!path_buf)
return 0;
len = strlen(path_buf);
if (len > 0)
if (path_buf[len - 1] == '/')
path_buf[len - 1] = '\0';
stat_ret = stat(path_buf, &stat_buf);
free(path_buf);
if (stat_ret < 0)
return 0;
if (size)
*size = (int32_t)stat_buf.st_size;
is_dir = S_ISDIR(stat_buf.st_mode);
is_character_special = S_ISCHR(stat_buf.st_mode);
#else
/* Every other platform */
struct stat buf;
if (!path || !*path)
return 0;
if (stat(path, &buf) < 0)
return 0;
if (size)
*size = (int32_t)buf.st_size;
is_dir = S_ISDIR(buf.st_mode);
is_character_special = S_ISCHR(buf.st_mode);
#endif
return RETRO_VFS_STAT_IS_VALID | (is_dir ? RETRO_VFS_STAT_IS_DIRECTORY : 0) | (is_character_special ? RETRO_VFS_STAT_IS_CHARACTER_SPECIAL : 0);
}
#if defined(VITA)
#define path_mkdir_error(ret) (((ret) == SCE_ERROR_ERRNO_EEXIST))
#elif defined(PSP) || defined(PS2) || defined(_3DS) || defined(WIIU) || defined(SWITCH) || defined(ORBIS)
#define path_mkdir_error(ret) ((ret) == -1)
#else
#define path_mkdir_error(ret) ((ret) < 0 && errno == EEXIST)
#endif
int retro_vfs_mkdir_impl(const char *dir)
{
#if defined(_WIN32)
#ifdef LEGACY_WIN32
int ret = _mkdir(dir);
#else
wchar_t *dir_w = utf8_to_utf16_string_alloc(dir);
int ret = -1;
if (dir_w)
{
ret = _wmkdir(dir_w);
free(dir_w);
}
#endif
#elif defined(IOS)
int ret = mkdir(dir, 0755);
#elif defined(VITA) || defined(PSP)
int ret = sceIoMkdir(dir, 0777);
#elif defined(ORBIS)
int ret = orbisMkdir(dir, 0755);
#elif defined(__QNX__)
int ret = mkdir(dir, 0777);
#elif defined(GEKKO)
/* On GEKKO platforms, mkdir() fails if
* the path has a trailing slash. We must
* therefore remove it. */
int ret = -1;
if (!string_is_empty(dir))
{
char *dir_buf = strdup(dir);
if (dir_buf)
{
size_t len = strlen(dir_buf);
if (len > 0)
if (dir_buf[len - 1] == '/')
dir_buf[len - 1] = '\0';
ret = mkdir(dir_buf, 0750);
free(dir_buf);
}
}
#else
int ret = mkdir(dir, 0750);
#endif
if (path_mkdir_error(ret))
return -2;
return ret < 0 ? -1 : 0;
}
#ifdef VFS_FRONTEND
struct retro_vfs_dir_handle
#else
struct libretro_vfs_implementation_dir
#endif
{
char* orig_path;
#if defined(_WIN32)
#if defined(LEGACY_WIN32)
WIN32_FIND_DATA entry;
#else
WIN32_FIND_DATAW entry;
#endif
HANDLE directory;
bool next;
char path[PATH_MAX_LENGTH];
#elif defined(VITA) || defined(PSP)
SceUID directory;
SceIoDirent entry;
#elif defined(__PSL1GHT__) || defined(__PS3__)
int error;
int directory;
sysFSDirent entry;
#elif defined(ORBIS)
int directory;
struct dirent entry;
#else
DIR *directory;
const struct dirent *entry;
#endif
};
static bool dirent_check_error(libretro_vfs_implementation_dir *rdir)
{
#if defined(_WIN32)
return (rdir->directory == INVALID_HANDLE_VALUE);
#elif defined(VITA) || defined(PSP) || defined(ORBIS)
return (rdir->directory < 0);
#elif defined(__PSL1GHT__) || defined(__PS3__)
return (rdir->error != FS_SUCCEEDED);
#else
return !(rdir->directory);
#endif
}
libretro_vfs_implementation_dir *retro_vfs_opendir_impl(
const char *name, bool include_hidden)
{
#if defined(_WIN32)
unsigned path_len;
char path_buf[1024];
size_t copied = 0;
#if defined(LEGACY_WIN32)
char *path_local = NULL;
#else
wchar_t *path_wide = NULL;
#endif
#endif
libretro_vfs_implementation_dir *rdir;
/*Reject null or empty string paths*/
if (!name || (*name == 0))
return NULL;
/*Allocate RDIR struct. Tidied later with retro_closedir*/
rdir = (libretro_vfs_implementation_dir*)calloc(1, sizeof(*rdir));
if (!rdir)
return NULL;
rdir->orig_path = strdup(name);
#if defined(_WIN32)
path_buf[0] = '\0';
path_len = strlen(name);
copied = strlcpy(path_buf, name, sizeof(path_buf));
/* Non-NT platforms don't like extra slashes in the path */
if (name[path_len - 1] != '\\')
path_buf[copied++] = '\\';
path_buf[copied] = '*';
path_buf[copied+1] = '\0';
#if defined(LEGACY_WIN32)
path_local = utf8_to_local_string_alloc(path_buf);
rdir->directory = FindFirstFile(path_local, &rdir->entry);
if (path_local)
free(path_local);
#else
path_wide = utf8_to_utf16_string_alloc(path_buf);
rdir->directory = FindFirstFileW(path_wide, &rdir->entry);
if (path_wide)
free(path_wide);
#endif
#elif defined(VITA) || defined(PSP)
rdir->directory = sceIoDopen(name);
#elif defined(_3DS)
rdir->directory = !string_is_empty(name) ? opendir(name) : NULL;
rdir->entry = NULL;
#elif defined(__PSL1GHT__) || defined(__PS3__)
rdir->error = sysFsOpendir(name, &rdir->directory);
#elif defined(ORBIS)
rdir->directory = orbisDopen(name);
#else
rdir->directory = opendir(name);
rdir->entry = NULL;
#endif
#ifdef _WIN32
if (include_hidden)
rdir->entry.dwFileAttributes |= FILE_ATTRIBUTE_HIDDEN;
else
rdir->entry.dwFileAttributes &= ~FILE_ATTRIBUTE_HIDDEN;
#endif
if (rdir->directory && !dirent_check_error(rdir))
return rdir;
retro_vfs_closedir_impl(rdir);
return NULL;
}
bool retro_vfs_readdir_impl(libretro_vfs_implementation_dir *rdir)
{
#if defined(_WIN32)
if (rdir->next)
#if defined(LEGACY_WIN32)
return (FindNextFile(rdir->directory, &rdir->entry) != 0);
#else
return (FindNextFileW(rdir->directory, &rdir->entry) != 0);
#endif
rdir->next = true;
return (rdir->directory != INVALID_HANDLE_VALUE);
#elif defined(VITA) || defined(PSP)
return (sceIoDread(rdir->directory, &rdir->entry) > 0);
#elif defined(__PSL1GHT__) || defined(__PS3__)
uint64_t nread;
rdir->error = sysFsReaddir(rdir->directory, &rdir->entry, &nread);
return (nread != 0);
#elif defined(ORBIS)
return (orbisDread(rdir->directory, &rdir->entry) > 0);
#else
return ((rdir->entry = readdir(rdir->directory)) != NULL);
#endif
}
const char *retro_vfs_dirent_get_name_impl(libretro_vfs_implementation_dir *rdir)
{
#if defined(_WIN32)
#if defined(LEGACY_WIN32)
char *name = local_to_utf8_string_alloc(rdir->entry.cFileName);
#else
char *name = utf16_to_utf8_string_alloc(rdir->entry.cFileName);
#endif
memset(rdir->entry.cFileName, 0, sizeof(rdir->entry.cFileName));
strlcpy((char*)rdir->entry.cFileName, name, sizeof(rdir->entry.cFileName));
if (name)
free(name);
return (char*)rdir->entry.cFileName;
#elif defined(VITA) || defined(PSP) || defined(ORBIS) || defined(__PSL1GHT__) || defined(__PS3__)
return rdir->entry.d_name;
#else
if (!rdir || !rdir->entry)
return NULL;
return rdir->entry->d_name;
#endif
}
bool retro_vfs_dirent_is_dir_impl(libretro_vfs_implementation_dir *rdir)
{
#if defined(_WIN32)
const WIN32_FIND_DATA *entry = (const WIN32_FIND_DATA*)&rdir->entry;
return entry->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
#elif defined(PSP) || defined(VITA)
const SceIoDirent *entry = (const SceIoDirent*)&rdir->entry;
#if defined(PSP)
return (entry->d_stat.st_attr & FIO_SO_IFDIR) == FIO_SO_IFDIR;
#elif defined(VITA)
return SCE_S_ISDIR(entry->d_stat.st_mode);
#endif
#elif defined(__PSL1GHT__) || defined(__PS3__)
sysFSDirent *entry = (sysFSDirent*)&rdir->entry;
return (entry->d_type == FS_TYPE_DIR);
#elif defined(ORBIS)
const struct dirent *entry = &rdir->entry;
if (entry->d_type == DT_DIR)
return true;
if (!(entry->d_type == DT_UNKNOWN || entry->d_type == DT_LNK))
return false;
#else
struct stat buf;
char path[PATH_MAX_LENGTH];
#if defined(DT_DIR)
const struct dirent *entry = (const struct dirent*)rdir->entry;
if (entry->d_type == DT_DIR)
return true;
/* This can happen on certain file systems. */
if (!(entry->d_type == DT_UNKNOWN || entry->d_type == DT_LNK))
return false;
#endif
/* dirent struct doesn't have d_type, do it the slow way ... */
path[0] = '\0';
fill_pathname_join(path, rdir->orig_path, retro_vfs_dirent_get_name_impl(rdir), sizeof(path));
if (stat(path, &buf) < 0)
return false;
return S_ISDIR(buf.st_mode);
#endif
}
int retro_vfs_closedir_impl(libretro_vfs_implementation_dir *rdir)
{
if (!rdir)
return -1;
#if defined(_WIN32)
if (rdir->directory != INVALID_HANDLE_VALUE)
FindClose(rdir->directory);
#elif defined(VITA) || defined(PSP)
sceIoDclose(rdir->directory);
#elif defined(__PSL1GHT__) || defined(__PS3__)
rdir->error = sysFsClosedir(rdir->directory);
#elif defined(ORBIS)
orbisDclose(rdir->directory);
#else
if (rdir->directory)
closedir(rdir->directory);
#endif
if (rdir->orig_path)
free(rdir->orig_path);
free(rdir);
return 0;
}
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