diff options
Diffstat (limited to 'libretro-common/vfs/vfs_implementation.c')
| -rw-r--r-- | libretro-common/vfs/vfs_implementation.c | 1335 |
1 files changed, 1335 insertions, 0 deletions
diff --git a/libretro-common/vfs/vfs_implementation.c b/libretro-common/vfs/vfs_implementation.c new file mode 100644 index 0000000..7a24a95 --- /dev/null +++ b/libretro-common/vfs/vfs_implementation.c @@ -0,0 +1,1335 @@ +/* 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> +#if defined(HAVE_MMAP) +#include <memmap.h> +#endif +#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; +} |