mirror of
https://github.com/edo9300/unlaunch-installer.git
synced 2025-06-18 14:25:39 -04:00
Support loading unlaunch installer from nitrofs as fallback
Using nitrofs implementation from gm9i
This commit is contained in:
Edoardo Lolletti
parent
53184bc63a
commit
1c0d2adf65
1
.gitignore
vendored
1
.gitignore
vendored
@ -8,3 +8,4 @@
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*.vscode
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*.vscode
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*.DS_Store
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*.DS_Store
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*._*
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*._*
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!nitrofiles/*
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2
Makefile
2
Makefile
@ -10,7 +10,7 @@ export TOPDIR := $(CURDIR)
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# specify a directory which contains the nitro filesystem
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# specify a directory which contains the nitro filesystem
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# this is relative to the Makefile
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# this is relative to the Makefile
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NITRO_FILES :=
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NITRO_FILES := nitrofiles
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# These set the information text in the nds file
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# These set the information text in the nds file
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GAME_TITLE := Safe Unlaunch installer
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GAME_TITLE := Safe Unlaunch installer
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@ -5,6 +5,7 @@
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#include "storage.h"
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#include "storage.h"
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#include "version.h"
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#include "version.h"
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#include "unlaunch.h"
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#include "unlaunch.h"
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#include "nitrofs.h"
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volatile bool programEnd = false;
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volatile bool programEnd = false;
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static volatile bool arm7Exiting = false;
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static volatile bool arm7Exiting = false;
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@ -139,7 +140,6 @@ int main(int argc, char **argv)
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if (!fatInitDefault())
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if (!fatInitDefault())
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{
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{
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messageBox("fatInitDefault()...\x1B[31mFailed\n\x1B[47m");
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messageBox("fatInitDefault()...\x1B[31mFailed\n\x1B[47m");
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return 0;
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}
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}
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//setup nand access
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//setup nand access
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@ -149,12 +149,33 @@ int main(int argc, char **argv)
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return 0;
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return 0;
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}
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}
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foundUnlaunchInstallerVersion = loadUnlaunchInstaller("sd:/unlaunch.dsi");
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const char* installerPath = (argc > 0) ? argv[0] : "sd:/ntrboot.nds";
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if (foundUnlaunchInstallerVersion != INVALID)
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if (!nitroFSInit(installerPath))
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{
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{
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messageBox("\x1B[41mWARNING:\x1B[47m unlaunch.dsi was not found in\n"
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messageBox("nitroFSInit()...\x1B[31mFailed\n\x1B[47m");
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"the root of the sd card.\n"
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}
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"Installing unlaunch won't be possible.");
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if (fileExists("sd:/unlaunch.dsi"))
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{
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foundUnlaunchInstallerVersion = loadUnlaunchInstaller("sd:/unlaunch.dsi");
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if (foundUnlaunchInstallerVersion == INVALID)
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{
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messageBox("\x1B[41mWARNING:\x1B[47m Failed to load unlaunch.dsi\n"
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"from the root of the sd card.\n"
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"Attempting to use the bundled one.");
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}
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}
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if(foundUnlaunchInstallerVersion == INVALID)
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{
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foundUnlaunchInstallerVersion = loadUnlaunchInstaller("nitro:/unlaunch.dsi");
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if (foundUnlaunchInstallerVersion == INVALID)
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{
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messageBox("\x1B[41mWARNING:\x1B[47m Failed to load bundled unlaunch\n"
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"installer.\n"
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"Installing unlaunch won't be possible.");
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}
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}
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}
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//check for unlaunch and region
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//check for unlaunch and region
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459
arm9/src/nitrofs.c
Normal file
459
arm9/src/nitrofs.c
Normal file
@ -0,0 +1,459 @@
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/*
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nitrofs.c - eris's wai ossum nitro filesystem device driver
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Based on information found at http://frangoassado.org/ds/rom_spec.txt and from the #dsdev ppls
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Kallisti (K) 2008-01-26 All rights reversed.
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2008-05-19 v0.2 - New And Improved!! :DDD
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* fix'd the fseek SEEK_CUR issue (my fseek funct should not have returned a value :/)
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* also thx to wintermute's input realized:
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* if you dont give ndstool the -o wifilogo.bmp option it will run on emulators in gba mode
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* you then dont need the gba's LOADEROFFSET, so it was set to 0x000
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2008-05-21 v0.3 - newer and more improved
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* fixed some issues with ftell() (again was fseek's fault u_u;;)
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* fixed possible error in detecting sc.gba files when using dldi
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* readded support for .gba files in addition to .nds emu
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* added stat() support for completedness :)
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2008-05-22 v0.3.1 - slight update
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* again fixed fseek(), this time SEEK_END oddly i kinda forgot about it >_> sry
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* also went ahead and inlined the functions, makes slight proformance improvement
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2008-05-26 v0.4 - added chdir
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* added proper chdir functionality
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2008-05-30 v0.5.Turbo - major speed improvement
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* This version uses a single filehandle to access the .nds file when not in GBA mode
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improving the speed it takes to open a .nds file by around 106ms. This is great for
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situations requiring reading alot of seperate small files. However it does take a little
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bit longer when reading from multiple files simultainously
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(around 122ms over 10,327 0x100 byte reads between 2 files).
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2008-06-09
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* Fixed bug with SEEK_END where it wouldnt utilize the submitted position..
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(now can fseek(f,-128,SEEK_END) to read from end of file :D)
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2008-06-18 v0.6.Turbo - . and .. :D
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* Today i have added full "." and ".." support.
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dirnext() will return . and .. first, and all relevent operations will
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support . and .. in pathnames.
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2009-05-10 v0.7.Turbo - small changes @_@?!
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2009-08-08 v0.8.Turbo - fix fix fix
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* fixed problem with some cards where the header would be loaded to GBA ram even if running
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in NDS mode causing nitroFSInit() to think it was a valid GBA cart header and attempt to
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read from GBA SLOT instead of SLOT 1. Fixed this by making it check that filename is not NULL
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and then to try FAT/SLOT1 first. The NULL option allows forcing nitroFS to use gba.
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2018-09-05 v0.9 - modernize devoptab (by RonnChyran)
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* Updated for libsysbase change in devkitARM r46 and above.
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*/
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#include <string.h>
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#include <errno.h>
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#include <nds.h>
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#include "nitrofs.h"
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//This seems to be a typo! memory.h has REG_EXEMEMCNT
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#ifndef REG_EXMEMCNT
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#define REG_EXMEMCNT (*(vuint16 *)0x04000204)
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#endif
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#define __itcm __attribute__((section(".itcm")))
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//Globals!
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u32 fntOffset; //offset to start of filename table
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u32 fatOffset; //offset to start of file alloc table
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bool hasLoader; //single global nds filehandle (is null if not in dldi/fat mode)
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u16 chdirpathid; //default dir path id...
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FILE *ndsFile = NULL;
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off_t ndsFileLastpos; //Used to determine need to fseek or not
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devoptab_t nitroFSdevoptab = {
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"nitro", // const char *name;
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sizeof(struct nitroFSStruct), // int structSize;
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&nitroFSOpen, // int (*open_r)(struct _reent *r, void *fileStruct, const char *path,int flags,int mode);
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&nitroFSClose, // int (*close_r)(struct _reent *r,void* fd);
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NULL, // int (*write_r)(struct _reent *r,void* fd,const char *ptr,int len);
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&nitroFSRead, // int (*read_r)(struct _reent *r,void* fd,char *ptr,int len);
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&nitroFSSeek, // int (*seek_r)(struct _reent *r,void* fd,int pos,int dir);
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&nitroFSFstat, // int (*fstat_r)(struct _reent *r,void* fd,struct stat *st);
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&nitroFSstat, // int (*stat_r)(struct _reent *r,const char *file,struct stat *st);
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NULL, // int (*link_r)(struct _reent *r,const char *existing, const char *newLink);
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NULL, // int (*unlink_r)(struct _reent *r,const char *name);
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&nitroFSChdir, // int (*chdir_r)(struct _reent *r,const char *name);
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NULL, // int (*rename_r) (struct _reent *r, const char *oldName, const char *newName);
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NULL, // int (*mkdir_r) (struct _reent *r, const char *path, int mode);
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sizeof(struct nitroDIRStruct), // int dirStateSize;
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&nitroFSDirOpen, // DIR_ITER* (*diropen_r)(struct _reent *r, DIR_ITER *dirState, const char *path);
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&nitroDirReset, // int (*dirreset_r)(struct _reent *r, DIR_ITER *dirState);
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&nitroFSDirNext, // int (*dirnext_r)(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat);
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&nitroFSDirClose // int (*dirclose_r)(struct _reent *r, DIR_ITER *dirState);
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};
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//K, i decided to inline these, improves speed slightly..
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//these 2 'sub' functions deal with actually reading from either gba rom or .nds file :)
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//what i rly rly rly wanna know is how an actual nds cart reads from itself, but it seems no one can tell me ~_~
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//so, instead we have this weird weird haxy try gbaslot then try dldi method. If i (or you!!) ever do figure out
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//how to read the proper way can replace these 4 functions and everything should work normally :)
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//reads from rom image either gba rom or dldi
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static inline ssize_t nitroSubRead(off_t *npos, void *ptr, size_t len)
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{
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if (ndsFile != NULL)
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{ //read from ndsfile
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if (ndsFileLastpos != *npos)
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fseek(ndsFile, *npos, SEEK_SET); //if we need to, move! (might want to verify this succeed)
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len = fread(ptr, 1, len, ndsFile);
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}
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if (len > 0)
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*npos += len;
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ndsFileLastpos = *npos; //save the current file nds pos
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return (len);
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}
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//seek around
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static inline void nitroSubSeek(off_t *npos, int pos, int dir)
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{
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if ((dir == SEEK_SET) || (dir == SEEK_END)) //otherwise just set the pos :)
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*npos = pos;
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else if (dir == SEEK_CUR)
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*npos += pos; //see ez!
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}
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//Figure out if its gba or ds, setup stuff
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int __itcm
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nitroFSInit(const char *ndsfile)
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{
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off_t pos = 0;
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char romstr[0x10];
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chdirpathid = NITROROOT;
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ndsFileLastpos = 0;
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if(ndsFile != NULL) {
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fclose(ndsFile);
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ndsFile = NULL;
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}
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if (ndsfile != NULL)
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{
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if ((ndsFile = fopen(ndsfile, "rb")))
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{
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nitroSubRead(&pos, romstr, strlen(LOADERSTR));
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if (strncmp(romstr, LOADERSTR, strlen(LOADERSTR)) == 0)
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{
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nitroSubSeek(&pos, LOADEROFFSET + FNTOFFSET, SEEK_SET);
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nitroSubRead(&pos, &fntOffset, sizeof(fntOffset));
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nitroSubSeek(&pos, LOADEROFFSET + FATOFFSET, SEEK_SET);
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nitroSubRead(&pos, &fatOffset, sizeof(fatOffset));
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fatOffset += LOADEROFFSET;
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fntOffset += LOADEROFFSET;
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hasLoader = true;
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}
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else
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{
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nitroSubSeek(&pos, FNTOFFSET, SEEK_SET);
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nitroSubRead(&pos, &fntOffset, sizeof(fntOffset));
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nitroSubSeek(&pos, FATOFFSET, SEEK_SET);
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nitroSubRead(&pos, &fatOffset, sizeof(fatOffset));
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hasLoader = false;
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}
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setvbuf(ndsFile, NULL, _IONBF, 0); //we dont need double buffs u_u
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if (fntOffset==0 || fatOffset==0)
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{
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return (0);
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}
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else
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{
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AddDevice(&nitroFSdevoptab);
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return (1);
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}
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}
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}
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return (0);
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}
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//Directory functs
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DIR_ITER *nitroFSDirOpen(struct _reent *r, DIR_ITER *dirState, const char *path)
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{
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struct nitroDIRStruct *dirStruct = (struct nitroDIRStruct *)dirState->dirStruct; //this makes it lots easier!
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struct stat st;
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char dirname[NITRONAMELENMAX];
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char *cptr;
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char mydirpath[NITROMAXPATHLEN]; //to hold copy of path string
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char *dirpath = mydirpath;
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bool pathfound;
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if ((cptr = strchr(path, ':')))
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path = cptr + 1; //move path past any device names (if it was nixy style wouldnt need this step >_>)
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strncpy(dirpath, path, sizeof(mydirpath) - 1); //copy the string (as im gonna mutalate it)
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dirStruct->pos = 0;
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if (*dirpath == '/') //if first character is '/' use absolute root path plz
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dirStruct->cur_dir_id = NITROROOT; //first root dir
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else
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dirStruct->cur_dir_id = chdirpathid; //else use chdirpath
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nitroDirReset(r, dirState); //set dir to current path
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do
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{
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while ((cptr = strchr(dirpath, '/')) == dirpath)
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{
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dirpath++; //move past any leading / or // together
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}
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if (cptr)
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*cptr = 0; //erase /
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if (*dirpath == 0)
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{ //are we at the end of the path string?? if so there is nothing to search for we're already here !
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pathfound = true; //mostly this handles searches for root or / or no path specified cases
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break;
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}
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pathfound = false;
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while (nitroFSDirNext(r, dirState, dirname, &st) == 0)
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{
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if ((st.st_mode == S_IFDIR) && !(strcasecmp(dirname, dirpath)))
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{ //if its a directory and name matches dirpath
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dirStruct->cur_dir_id = dirStruct->dir_id; //move us to the next dir in tree
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nitroDirReset(r, dirState); //set dir to current path we just found...
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pathfound = true;
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break;
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}
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};
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if (!pathfound)
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break;
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dirpath = cptr + 1; //move to right after last / we found
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} while (cptr); // go till after the last /
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if (pathfound)
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{
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return (dirState);
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}
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else
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{
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r->_errno = ENOENT;
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return (NULL);
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}
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}
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int nitroFSDirClose(struct _reent *r, DIR_ITER *dirState)
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{
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return (0);
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}
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/*Consts containing relative system path strings*/
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const char *syspaths[2] = {
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".",
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".."};
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//reset dir to start of entry selected by dirStruct->cur_dir_id which should be set in dirOpen okai?!
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int nitroDirReset(struct _reent *r, DIR_ITER *dirState)
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{
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struct nitroDIRStruct *dirStruct = (struct nitroDIRStruct *)dirState->dirStruct; //this makes it lots easier!
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struct ROM_FNTDir dirsubtable;
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off_t *pos = &dirStruct->pos;
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nitroSubSeek(pos, fntOffset + ((dirStruct->cur_dir_id & NITRODIRMASK) * sizeof(struct ROM_FNTDir)), SEEK_SET);
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nitroSubRead(pos, &dirsubtable, sizeof(dirsubtable));
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dirStruct->namepos = dirsubtable.entry_start; //set namepos to first entry in this dir's table
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dirStruct->entry_id = dirsubtable.entry_file_id; //get number of first file ID in this branch
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dirStruct->parent_id = dirsubtable.parent_id; //save parent ID in case we wanna add ../ functionality
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dirStruct->spc = 0; //system path counter, first two dirnext's deliver . and ..
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return (0);
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}
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int nitroFSDirNext(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *st)
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{
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|
unsigned char next;
|
||||||
|
struct nitroDIRStruct *dirStruct = (struct nitroDIRStruct *)dirState->dirStruct; //this makes it lots easier!
|
||||||
|
off_t *pos = &dirStruct->pos;
|
||||||
|
if (dirStruct->spc <= 1)
|
||||||
|
{
|
||||||
|
if (st)
|
||||||
|
st->st_mode = S_IFDIR;
|
||||||
|
if ((dirStruct->spc == 0) || (dirStruct->cur_dir_id == NITROROOT))
|
||||||
|
{ // "." or its already root (no parent)
|
||||||
|
dirStruct->dir_id = dirStruct->cur_dir_id;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{ // ".."
|
||||||
|
dirStruct->dir_id = dirStruct->parent_id;
|
||||||
|
}
|
||||||
|
strcpy(filename, syspaths[dirStruct->spc++]);
|
||||||
|
return (0);
|
||||||
|
}
|
||||||
|
nitroSubSeek(pos, fntOffset + dirStruct->namepos, SEEK_SET);
|
||||||
|
nitroSubRead(pos, &next, sizeof(next));
|
||||||
|
// next: high bit 0x80 = entry isdir.. other 7 bits r size, the 16 bits following name are dir's entryid (starts with f000)
|
||||||
|
// 00 = endoftable //
|
||||||
|
if (next)
|
||||||
|
{
|
||||||
|
if (next & NITROISDIR)
|
||||||
|
{
|
||||||
|
if (st)
|
||||||
|
st->st_mode = S_IFDIR;
|
||||||
|
next &= NITROISDIR ^ 0xff; //invert bits and mask off 0x80
|
||||||
|
nitroSubRead(pos, filename, next);
|
||||||
|
nitroSubRead(&dirStruct->pos, &dirStruct->dir_id, sizeof(dirStruct->dir_id)); //read the dir_id
|
||||||
|
//grr cant get the struct member size?, just wanna test it so moving on...
|
||||||
|
// nitroSubRead(pos,&dirStruct->dir_id,sizeof(u16)); //read the dir_id
|
||||||
|
dirStruct->namepos += next + sizeof(u16) + 1; //now we points to next one plus dir_id size:D
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
if (st)
|
||||||
|
st->st_mode = 0;
|
||||||
|
nitroSubRead(pos, filename, next);
|
||||||
|
dirStruct->namepos += next + 1; //now we points to next one :D
|
||||||
|
//read file info to get filesize (and for fileopen)
|
||||||
|
nitroSubSeek(pos, fatOffset + (dirStruct->entry_id * sizeof(struct ROM_FAT)), SEEK_SET);
|
||||||
|
nitroSubRead(pos, &dirStruct->romfat, sizeof(dirStruct->romfat)); //retrieve romfat entry (contains filestart and end positions)
|
||||||
|
dirStruct->entry_id++; //advance ROM_FNTStrFile ptr
|
||||||
|
if (st)
|
||||||
|
st->st_size = dirStruct->romfat.bottom - dirStruct->romfat.top; //calculate filesize
|
||||||
|
}
|
||||||
|
filename[(int)next] = 0; //zero last char
|
||||||
|
return (0);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
r->_errno = EIO;
|
||||||
|
return (-1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
//fs functs
|
||||||
|
int nitroFSOpen(struct _reent *r, void *fileStruct, const char *path, int flags, int mode)
|
||||||
|
{
|
||||||
|
struct nitroFSStruct *fatStruct = (struct nitroFSStruct *)fileStruct;
|
||||||
|
struct nitroDIRStruct dirStruct;
|
||||||
|
DIR_ITER dirState;
|
||||||
|
dirState.dirStruct = &dirStruct; //create a temp dirstruct
|
||||||
|
struct _reent dre;
|
||||||
|
struct stat st; //all these are just used for reading the dir ~_~
|
||||||
|
char dirfilename[NITROMAXPATHLEN]; // to hold a full path (i tried to avoid using so much stack but blah :/)
|
||||||
|
char *filename; // to hold filename
|
||||||
|
char *cptr; //used to string searching and manipulation
|
||||||
|
cptr = (char *)path + strlen(path); //find the end...
|
||||||
|
filename = NULL;
|
||||||
|
do
|
||||||
|
{
|
||||||
|
if ((*cptr == '/') || (*cptr == ':'))
|
||||||
|
{ // split at either / or : (whichever comes first form the end!)
|
||||||
|
cptr++;
|
||||||
|
strncpy(dirfilename, path, cptr - path); //copy string up till and including/ or : zero rest
|
||||||
|
dirfilename[cptr - path] = 0; //it seems strncpy doesnt always zero?!
|
||||||
|
filename = cptr; //filename = now remainder of string
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
} while (cptr-- != path); //search till start
|
||||||
|
if (!filename)
|
||||||
|
{ //we didnt find a / or : ? shouldnt realyl happen but if it does...
|
||||||
|
filename = (char *)path; //filename = complete path
|
||||||
|
dirfilename[0] = 0; //make directory path ""
|
||||||
|
}
|
||||||
|
if (nitroFSDirOpen(&dre, &dirState, dirfilename))
|
||||||
|
{
|
||||||
|
fatStruct->start = 0;
|
||||||
|
while (nitroFSDirNext(&dre, &dirState, dirfilename, &st) == 0)
|
||||||
|
{
|
||||||
|
if (!(st.st_mode & S_IFDIR) && (strcasecmp(dirfilename, filename) == 0))
|
||||||
|
{ //Found the *file* youre looking for!!
|
||||||
|
fatStruct->start = dirStruct.romfat.top;
|
||||||
|
fatStruct->end = dirStruct.romfat.bottom;
|
||||||
|
if (hasLoader)
|
||||||
|
{
|
||||||
|
fatStruct->start += LOADEROFFSET;
|
||||||
|
fatStruct->end += LOADEROFFSET;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (fatStruct->start)
|
||||||
|
{
|
||||||
|
nitroSubSeek(&fatStruct->pos, fatStruct->start, SEEK_SET); //seek to start of file
|
||||||
|
return (0); //woot!
|
||||||
|
}
|
||||||
|
nitroFSDirClose(&dre, &dirState);
|
||||||
|
}
|
||||||
|
if (r->_errno == 0)
|
||||||
|
{
|
||||||
|
r->_errno = ENOENT;
|
||||||
|
}
|
||||||
|
return (-1); //teh fail
|
||||||
|
}
|
||||||
|
|
||||||
|
int nitroFSClose(struct _reent *r, void* fd)
|
||||||
|
{
|
||||||
|
return (0);
|
||||||
|
}
|
||||||
|
|
||||||
|
ssize_t nitroFSRead(struct _reent *r, void* fd, char *ptr, size_t len)
|
||||||
|
{
|
||||||
|
struct nitroFSStruct *fatStruct = (struct nitroFSStruct *)fd;
|
||||||
|
off_t *npos = &fatStruct->pos;
|
||||||
|
if (*npos + len > fatStruct->end)
|
||||||
|
len = fatStruct->end - *npos; //dont let us read past the end plz!
|
||||||
|
if (*npos > fatStruct->end)
|
||||||
|
return (0); //hit eof
|
||||||
|
return (nitroSubRead(npos, ptr, len));
|
||||||
|
}
|
||||||
|
|
||||||
|
off_t nitroFSSeek(struct _reent *r, void* fd, off_t pos, int dir)
|
||||||
|
{
|
||||||
|
//need check for eof here...
|
||||||
|
struct nitroFSStruct *fatStruct = (struct nitroFSStruct *)fd;
|
||||||
|
off_t *npos = &fatStruct->pos;
|
||||||
|
if (dir == SEEK_SET)
|
||||||
|
pos += fatStruct->start; //add start from .nds file offset
|
||||||
|
else if (dir == SEEK_END)
|
||||||
|
pos += fatStruct->end; //set start to end of file (useless?)
|
||||||
|
if (pos > fatStruct->end)
|
||||||
|
return (-1); //dont let us read past the end plz!
|
||||||
|
nitroSubSeek(npos, pos, dir);
|
||||||
|
return (*npos - fatStruct->start);
|
||||||
|
}
|
||||||
|
|
||||||
|
int nitroFSFstat(struct _reent *r, void* fd, struct stat *st)
|
||||||
|
{
|
||||||
|
struct nitroFSStruct *fatStruct = (struct nitroFSStruct *)fd;
|
||||||
|
st->st_size = fatStruct->end - fatStruct->start;
|
||||||
|
return (0);
|
||||||
|
}
|
||||||
|
|
||||||
|
int nitroFSstat(struct _reent *r, const char *file, struct stat *st)
|
||||||
|
{
|
||||||
|
struct nitroFSStruct fatStruct;
|
||||||
|
struct nitroDIRStruct dirStruct;
|
||||||
|
DIR_ITER dirState;
|
||||||
|
|
||||||
|
if (nitroFSOpen(NULL, &fatStruct, file, 0, 0) >= 0)
|
||||||
|
{
|
||||||
|
st->st_mode = S_IFREG;
|
||||||
|
st->st_size = fatStruct.end - fatStruct.start;
|
||||||
|
return (0);
|
||||||
|
}
|
||||||
|
|
||||||
|
dirState.dirStruct = &dirStruct;
|
||||||
|
if ((nitroFSDirOpen(r, &dirState, file) != NULL))
|
||||||
|
{
|
||||||
|
|
||||||
|
st->st_mode = S_IFDIR;
|
||||||
|
nitroFSDirClose(r, &dirState);
|
||||||
|
return (0);
|
||||||
|
}
|
||||||
|
r->_errno = ENOENT;
|
||||||
|
return (-1);
|
||||||
|
}
|
||||||
|
|
||||||
|
int nitroFSChdir(struct _reent *r, const char *name)
|
||||||
|
{
|
||||||
|
struct nitroDIRStruct dirStruct;
|
||||||
|
DIR_ITER dirState;
|
||||||
|
dirState.dirStruct = &dirStruct;
|
||||||
|
if ((name != NULL) && (nitroFSDirOpen(r, &dirState, name) != NULL))
|
||||||
|
{
|
||||||
|
chdirpathid = dirStruct.cur_dir_id;
|
||||||
|
nitroFSDirClose(r, &dirState);
|
||||||
|
return (0);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
r->_errno = ENOENT;
|
||||||
|
return (-1);
|
||||||
|
}
|
||||||
|
}
|
||||||
113
arm9/src/nitrofs.h
Normal file
113
arm9/src/nitrofs.h
Normal file
@ -0,0 +1,113 @@
|
|||||||
|
/*
|
||||||
|
nitrofs.h - eris's wai ossum nitro filesystem device driver header
|
||||||
|
Based on information found at http://frangoassado.org/ds/rom_spec.txt and from the #dsdev ppls
|
||||||
|
Kallisti (K) 2008-01-26 All rights reversed.
|
||||||
|
|
||||||
|
2008-05-19 v0.2 - New And Improved!! :DDD
|
||||||
|
* fix'd the fseek SEEK_CUR issue (my fseek funct should not have returned a value :/)
|
||||||
|
* also thx to wintermute's input realized:
|
||||||
|
* if you dont give ndstool the -o wifilogo.bmp option it will run on emulators in gba mode
|
||||||
|
* you then dont need the gba's LOADEROFFSET, so it was set to 0x000
|
||||||
|
|
||||||
|
2008-05-21 v0.3 - newer and more improved
|
||||||
|
* fixed some issues with ftell() (again was fseek's fault u_u;;)
|
||||||
|
* fixed possible error in detecting sc.gba files when using dldi
|
||||||
|
* readded support for .gba files in addition to .nds emu
|
||||||
|
* added stat() support for completedness :)
|
||||||
|
|
||||||
|
2008-05-30 v0.5.Turbo - major speed improvement
|
||||||
|
* This version uses a single filehandle to access the .nds file when not in GBA mode
|
||||||
|
improving the speed it takes to open a .nds file by around 106ms. This is great for
|
||||||
|
situations requiring reading alot of seperate small files. However it does take a little
|
||||||
|
bit longer when reading from multiple files simultainously
|
||||||
|
(around 122ms over 10,327 0x100 byte reads between 2 files).
|
||||||
|
2008-06-09
|
||||||
|
* Fixed bug with SEEK_END where it wouldnt utilize the submitted position..
|
||||||
|
(now can fseek(f,-128,SEEK_END) to read from end of file :D)
|
||||||
|
|
||||||
|
2008-06-18 v0.6.Turbo - . and .. :D
|
||||||
|
* Today i have added full "." and ".." support.
|
||||||
|
dirnext() will return . and .. first, and all relevent operations will
|
||||||
|
support . and .. in pathnames.
|
||||||
|
|
||||||
|
2018-09-05 v0.9 - modernize devoptab (by RonnChyran)
|
||||||
|
* Updated for libsysbase change in devkitARM r46 and above.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef NITROFS_H
|
||||||
|
#define NITROFS_H
|
||||||
|
|
||||||
|
#include <sys/dir.h>
|
||||||
|
#include <sys/iosupport.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
extern "C"
|
||||||
|
{
|
||||||
|
#endif
|
||||||
|
|
||||||
|
int nitroFSInit(const char *ndsfile);
|
||||||
|
DIR_ITER *nitroFSDirOpen(struct _reent *r, DIR_ITER *dirState, const char *path);
|
||||||
|
int nitroDirReset(struct _reent *r, DIR_ITER *dirState);
|
||||||
|
int nitroFSDirNext(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *st);
|
||||||
|
int nitroFSDirClose(struct _reent *r, DIR_ITER *dirState);
|
||||||
|
int nitroFSOpen(struct _reent *r, void *fileStruct, const char *path, int flags, int mode);
|
||||||
|
int nitroFSClose(struct _reent *r, void *fd);
|
||||||
|
ssize_t nitroFSRead(struct _reent *r, void *fd, char *ptr, size_t len);
|
||||||
|
off_t nitroFSSeek(struct _reent *r, void *fd, off_t pos, int dir);
|
||||||
|
int nitroFSFstat(struct _reent *r, void *fd, struct stat *st);
|
||||||
|
int nitroFSstat(struct _reent *r, const char *file, struct stat *st);
|
||||||
|
int nitroFSChdir(struct _reent *r, const char *name);
|
||||||
|
#define LOADERSTR "PASS" //look for this
|
||||||
|
#define LOADERSTROFFSET 0xac
|
||||||
|
#define LOADEROFFSET 0x0200
|
||||||
|
#define FNTOFFSET 0x40
|
||||||
|
#define FATOFFSET 0x48
|
||||||
|
|
||||||
|
#define NITRONAMELENMAX 0x80 //max file name is 127 +1 for zero byte :D
|
||||||
|
#define NITROMAXPATHLEN 0x100 //256 bytes enuff?
|
||||||
|
|
||||||
|
#define NITROROOT 0xf000 //root entry_file_id
|
||||||
|
#define NITRODIRMASK 0x0fff //remove leading 0xf
|
||||||
|
|
||||||
|
#define NITROISDIR 0x80 //mask to indicate this name entry is a dir, other 7 bits = name length
|
||||||
|
|
||||||
|
//Directory filename subtable entry structure
|
||||||
|
struct ROM_FNTDir
|
||||||
|
{
|
||||||
|
u32 entry_start;
|
||||||
|
u16 entry_file_id;
|
||||||
|
u16 parent_id;
|
||||||
|
};
|
||||||
|
|
||||||
|
//Yo, dis table is fat (describes the structures
|
||||||
|
struct ROM_FAT
|
||||||
|
{
|
||||||
|
u32 top; //start of file in rom image
|
||||||
|
u32 bottom; //end of file in rom image
|
||||||
|
};
|
||||||
|
|
||||||
|
struct nitroFSStruct
|
||||||
|
{
|
||||||
|
off_t pos; //where in the file am i?
|
||||||
|
off_t start; //where in the rom this file starts
|
||||||
|
off_t end; //where in the rom this file ends
|
||||||
|
};
|
||||||
|
|
||||||
|
struct nitroDIRStruct
|
||||||
|
{
|
||||||
|
off_t pos; //where in the file am i?
|
||||||
|
off_t namepos; //ptr to next name to lookup in list
|
||||||
|
struct ROM_FAT romfat;
|
||||||
|
u16 entry_id; //which entry this is (for files only) incremented with each new file in dir?
|
||||||
|
u16 dir_id; //which directory entry this is.. used ofc for dirs only
|
||||||
|
u16 cur_dir_id; //which directory entry we are using
|
||||||
|
u16 parent_id; //who is the parent of the current directory (this can be used to easily ../ )
|
||||||
|
u8 spc; //system path count.. used by dirnext, when 0=./ 1=../ >=2 actual dirs
|
||||||
|
};
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#endif
|
||||||
Loading…
Reference in New Issue
Block a user