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Maschell 2021-01-01 01:43:50 +01:00
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26
.github/workflows/push_image.yml vendored Normal file
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name: Publish Docker Image
on:
push:
branches:
- master
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@master
- name: Get release version
id: get_release_tag
run: |
echo RELEASE_VERSION=$(echo $(date '+%Y%m%d')) >> $GITHUB_ENV
echo REPOSITORY_NAME=$(echo "$GITHUB_REPOSITORY" | awk -F / '{print $2}' | sed -e "s/:refs//" | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
echo REPOSITORY_OWNER=$(echo "$GITHUB_REPOSITORY" | awk -F / '{print $1}' | sed 's/[^a-zA-Z0-9]//g' | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
- name: Publish to Registry
uses: elgohr/Publish-Docker-Github-Action@master
with:
name: ${{ env.REPOSITORY_OWNER }}/${{ env.REPOSITORY_NAME }}
username: ${{ secrets.DOCKER_USERNAME }}
password: ${{ secrets.DOCKER_PASSWORD }}
snapshot: true
cache: true
tags: "latest, ${{ env.RELEASE_VERSION }}"
dockerfile: Dockerfile.wiiu

7
.gitignore vendored Normal file
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release/
.idea/
*.bz2
lib/
cmake-build-debug/
share/
CMakeLists.txt

9
Dockerfile Normal file
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FROM wiiuenv/devkitppc:20200810
WORKDIR tmp_build
COPY . .
RUN make clean && make && mkdir -p /artifacts/wut/usr && cp -r lib /artifacts/wut/usr && cp -r include /artifacts/wut/usr
WORKDIR /artifacts
FROM scratch
COPY --from=0 /artifacts /artifacts

166
Makefile Normal file
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#-------------------------------------------------------------------------------
.SUFFIXES:
#-------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITPRO)),)
$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
endif
TOPDIR ?= $(CURDIR)
include $(DEVKITPRO)/wut/share/wut_rules
export VER_MAJOR := 1
export VER_MINOR := 0
export VER_PATCH := 0
VERSION := $(VER_MAJOR).$(VER_MINOR).$(VER_PATCH)
#-------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
#-------------------------------------------------------------------------------
TARGET := $(notdir $(CURDIR))
BUILD := build
SOURCES := source
DATA := data
INCLUDES := source \
include \
#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
CFLAGS := -Wall -Werror -save-temps \
-ffunction-sections -fdata-sections \
$(MACHDEP) \
$(BUILD_CFLAGS)
CFLAGS += $(INCLUDE) -D__WIIU__
CXXFLAGS := $(CFLAGS) -std=gnu++17
ASFLAGS := $(MACHDEP)
LDFLAGS = $(ARCH) -Wl,--gc-sections
LIBS :=
#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS := $(PORTLIBS) $(WUT_ROOT)
#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------
export TOPDIR := $(CURDIR)
export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
$(foreach dir,$(DATA),$(CURDIR)/$(dir))
CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
DEFFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.def)))
BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
export LD := $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
export LD := $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------
export OFILES_BIN := $(addsuffix .o,$(BINFILES))
export OFILES_SRC := $(DEFFILES:.def=.o) $(SFILES:.s=.o) $(CFILES:.c=.o) $(CPPFILES:.cpp=.o)
export OFILES := $(OFILES_BIN) $(OFILES_SRC)
export HFILES := $(addsuffix .h,$(subst .,_,$(BINFILES)))
export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
-I.
.PHONY: all dist-bin dist-src dist install clean
#---------------------------------------------------------------------------------
all: lib/libromfs.a
dist-bin: all
@tar --exclude=*~ -cjf libromfs-$(VERSION).tar.bz2 include lib share
dist-src:
@tar --exclude=*~ -cjf libromfs-src-$(VERSION).tar.bz2 include source Makefile
dist: dist-src dist-bin
install: dist-bin
mkdir -p $(DESTDIR)$(DEVKITPRO)/wut/usr
bzip2 -cd libromfs-$(VERSION).tar.bz2 | tar -xf - -C $(DESTDIR)$(DEVKITPRO)/wut/usr
lib:
@[ -d $@ ] || mkdir -p $@
share:
@[ -d $@ ] || mkdir -p $@
release:
@[ -d $@ ] || mkdir -p $@
lib/libromfs.a :$(SOURCES) $(INCLUDES) | lib release
@$(MAKE) BUILD=release OUTPUT=$(CURDIR)/$@ \
BUILD_CFLAGS="-DNDEBUG=1 -O2 -s" \
DEPSDIR=$(CURDIR)/release \
--no-print-directory -C release \
-f $(CURDIR)/Makefile
#---------------------------------------------------------------------------------
clean:
@echo clean ...
@rm -rf release lib
#---------------------------------------------------------------------------------
else
DEPENDS := $(OFILES:.o=.d)
#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
$(OUTPUT) : $(OFILES)
$(OFILES_SRC) : $(HFILES)
#---------------------------------------------------------------------------------
%.o: %.def
$(SILENTMSG) $(notdir $<)
$(SILENTCMD)rplimportgen $< $*.s $*.ld $(ERROR_FILTER)
$(SILENTCMD)$(CC) -x assembler-with-cpp $(ASFLAGS) -c $*.s -o $@ $(ERROR_FILTER)
#---------------------------------------------------------------------------------
%_bin.h %.bin.o : %.bin
#---------------------------------------------------------------------------------
@echo $(notdir $<)
@$(bin2o)
-include $(DEPENDS)
#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------

2
README.md Normal file
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# libromfs
Ported from [libnx](https://github.com/switchbrew/libnx/blob/e5ae43f4c2cca5320559d9c27ce256b2901aed40/nx/source/runtime/devices/romfs_dev.c)

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include/romfs_dev.h Normal file
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/**
* @file romfs_dev.h
* @brief RomFS driver.
* @author yellows8
* @author mtheall
* @author fincs
* @author Maschell
* @copyright libnx Authors
*/
#pragma once
#include <wut.h>
/// RomFS header.
typedef struct {
uint64_t headerSize; ///< Size of the header.
uint64_t dirHashTableOff; ///< Offset of the directory hash table.
uint64_t dirHashTableSize; ///< Size of the directory hash table.
uint64_t dirTableOff; ///< Offset of the directory table.
uint64_t dirTableSize; ///< Size of the directory table.
uint64_t fileHashTableOff; ///< Offset of the file hash table.
uint64_t fileHashTableSize; ///< Size of the file hash table.
uint64_t fileTableOff; ///< Offset of the file table.
uint64_t fileTableSize; ///< Size of the file table.
uint64_t fileDataOff; ///< Offset of the file data.
} romfs_header;
/// RomFS directory.
typedef struct {
uint32_t parent; ///< Offset of the parent directory.
uint32_t sibling; ///< Offset of the next sibling directory.
uint32_t childDir; ///< Offset of the first child directory.
uint32_t childFile; ///< Offset of the first file.
uint32_t nextHash; ///< Directory hash table pointer.
uint32_t nameLen; ///< Name length.
uint8_t name[]; ///< Name. (UTF-8)
} romfs_dir;
/// RomFS file.
typedef struct {
uint32_t parent; ///< Offset of the parent directory.
uint32_t sibling; ///< Offset of the next sibling file.
uint64_t dataOff; ///< Offset of the file's data.
uint64_t dataSize; ///< Length of the file's data.
uint32_t nextHash; ///< File hash table pointer.
uint32_t nameLen; ///< Name length.
uint8_t name[]; ///< Name. (UTF-8)
} romfs_file;
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
RomfsSource_FileDescriptor,
RomfsSource_FileDescriptor_CafeOS,
} RomfsSource;
/**
* @brief Mounts the Application's RomFS.
* @param name Device mount name.
*/
int32_t romfsMount(const char *name, const char * path, RomfsSource source);
/**
* @brief Mounts RomFS from an open file.
* @param file FsFile of the RomFS image.
* @param offset Offset of the RomFS within the file.
* @param name Device mount name.
bool romfsMountFromFile(FsFile file, uint64_t offset, const char *name);
*/
/// Unmounts the RomFS device.
int32_t romfsUnmount(const char *name);
/// RomFS file.
typedef struct {
uint64_t length; ///< Offset of the file's data.
uint64_t offset; ///< Length of the file's data.
} romfs_fileInfo;
int romfsGetFileInfoPerPath(const char* romfs, const char *path, romfs_fileInfo* out);
#ifdef __cplusplus
}
#endif

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source/romfs_dev.c Normal file
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#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <sys/dirent.h>
#include <sys/iosupport.h>
#include <sys/param.h>
#include <unistd.h>
#include <stdbool.h>
#include <malloc.h>
#include <coreinit/cache.h>
#include <coreinit/filesystem.h>
#include "romfs_dev.h"
typedef struct romfs_mount {
devoptab_t device;
bool setup;
RomfsSource fd_type;
int32_t id;
int32_t fd;
time_t mtime;
uint64_t offset;
romfs_header header;
romfs_dir *cwd;
uint32_t *dirHashTable, *fileHashTable;
void *dirTable, *fileTable;
char name[32];
FSFileHandle cafe_fd;
FSClient cafe_client;
} romfs_mount;
extern int __system_argc;
extern char **__system_argv;
//static char __thread __component[PATH_MAX+1];
static char __component[PATH_MAX + 1];
#define romFS_root(m) ((romfs_dir*)(m)->dirTable)
#define romFS_none ((uint32_t)~0)
#define romFS_dir_mode (S_IFDIR | S_IRUSR | S_IRGRP | S_IROTH)
#define romFS_file_mode (S_IFREG | S_IRUSR | S_IRGRP | S_IROTH)
static romfs_dir *romFS_dir(romfs_mount *mount, uint32_t off) {
if (off + sizeof(romfs_dir) > mount->header.dirTableSize) { return NULL; }
romfs_dir *curDir = ((romfs_dir * )((uint8_t *) mount->dirTable + off));
if (off + sizeof(romfs_dir) + curDir->nameLen > mount->header.dirTableSize) { return NULL; }
return curDir;
}
static romfs_file *romFS_file(romfs_mount *mount, uint32_t off) {
if (off + sizeof(romfs_file) > mount->header.fileTableSize) { return NULL; }
romfs_file *curFile = ((romfs_file * )((uint8_t *) mount->fileTable + off));
if (off + sizeof(romfs_file) + curFile->nameLen > mount->header.fileTableSize) { return NULL; }
return curFile;
}
static ssize_t _romfs_read(romfs_mount *mount, uint64_t offset, void *buffer, uint64_t size) {
uint64_t pos = mount->offset + offset;
size_t _read = 0;
if (mount->fd_type == RomfsSource_FileDescriptor) {
off_t seek_offset = lseek(mount->fd, pos, SEEK_SET);
if (pos != seek_offset) {
return -1;
}
_read = read(mount->fd, buffer, size);
} else if (mount->fd_type == RomfsSource_FileDescriptor_CafeOS) {
FSCmdBlock cmd;
FSInitCmdBlock(&cmd);
FSStatus result;
if ((((uint32_t) buffer) & 0x3F) == 0) {
result = FSReadFileWithPos(&mount->cafe_client, &cmd, (uint8_t *) buffer, 1, size, pos, mount->cafe_fd, 0, FS_ERROR_FLAG_ALL);
} else {
uint8_t *buffer_ = (uint8_t *) memalign(0x40, size);
if (!buffer_) {
return -1;
}
result = FSReadFileWithPos(&mount->cafe_client, &cmd, buffer_, 1, size, pos, mount->cafe_fd, 0, FS_ERROR_FLAG_ALL);
memcpy(buffer, buffer_, size);
free(buffer_);
}
if (result < 0) {
return -1;
}
return (ssize_t) result;
}
return _read;
}
static bool _romfs_read_chk(romfs_mount *mount, uint64_t offset, void *buffer, uint64_t size) {
return _romfs_read(mount, offset, buffer, size) == size;
}
//-----------------------------------------------------------------------------
static int romfs_open(struct _reent *r, void *fileStruct, const char *path, int flags, int mode);
static int romfs_close(struct _reent *r, void *fd);
static ssize_t romfs_read(struct _reent *r, void *fd, char *ptr, size_t len);
static off_t romfs_seek(struct _reent *r, void *fd, off_t pos, int dir);
static int romfs_fstat(struct _reent *r, void *fd, struct stat *st);
static int romfs_stat(struct _reent *r, const char *path, struct stat *st);
static int romfs_chdir(struct _reent *r, const char *path);
static DIR_ITER *romfs_diropen(struct _reent *r, DIR_ITER *dirState, const char *path);
static int romfs_dirreset(struct _reent *r, DIR_ITER *dirState);
static int romfs_dirnext(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat);
static int romfs_dirclose(struct _reent *r, DIR_ITER *dirState);
typedef struct {
romfs_mount *mount;
romfs_file *file;
uint64_t offset, pos;
} romfs_fileobj;
typedef struct {
romfs_mount *mount;
romfs_dir *dir;
uint32_t state;
uint32_t childDir;
uint32_t childFile;
} romfs_diriter;
static const devoptab_t romFS_devoptab =
{
.structSize = sizeof(romfs_fileobj),
.open_r = romfs_open,
.close_r = romfs_close,
.read_r = romfs_read,
.seek_r = romfs_seek,
.fstat_r = romfs_fstat,
.stat_r = romfs_stat,
.chdir_r = romfs_chdir,
.dirStateSize = sizeof(romfs_diriter),
.diropen_r = romfs_diropen,
.dirreset_r = romfs_dirreset,
.dirnext_r = romfs_dirnext,
.dirclose_r = romfs_dirclose,
// symlinks aren't supported so alias lstat to stat
.lstat_r = romfs_stat,
};
static bool romfs_initialised = false;
static romfs_mount romfs_mounts[32];
//-----------------------------------------------------------------------------
static int32_t romfsMountCommon(const char *name, romfs_mount *mount);
static void romfsInitMtime(romfs_mount *mount);
static void _romfsResetMount(romfs_mount *mount, int32_t id) {
memset(mount, 0, sizeof(*mount));
memcpy(&mount->device, &romFS_devoptab, sizeof(romFS_devoptab));
mount->device.name = mount->name;
mount->device.deviceData = mount;
mount->id = id;
DCFlushRange(mount, sizeof(*mount));
}
static void _romfsInit(void) {
uint32_t i;
uint32_t total = sizeof(romfs_mounts) / sizeof(romfs_mount);
if (!romfs_initialised) {
for (i = 0; i < total; i++) {
_romfsResetMount(&romfs_mounts[i], i);
}
romfs_initialised = true;
}
}
static romfs_mount *romfsFindMount(const char *name) {
uint32_t i;
uint32_t total = sizeof(romfs_mounts) / sizeof(romfs_mount);
romfs_mount *mount = NULL;
_romfsInit();
for (i = 0; i < total; i++) {
mount = &romfs_mounts[i];
if (name == NULL) { //Find an unused mount entry.
if (!mount->setup) {
return mount;
}
} else if (mount->setup) { //Find the mount with the input name.
if (strncmp(mount->name, name, sizeof(mount->name)) == 0) {
return mount;
}
}
}
return NULL;
}
__attribute__((weak)) const char *__romfs_path = NULL;
static romfs_mount *romfs_alloc(void) {
return romfsFindMount(NULL);
}
static void romfs_free(romfs_mount *mount) {
if (mount->fileTable) {
free(mount->fileTable);
}
if (mount->fileHashTable) {
free(mount->fileHashTable);
}
if (mount->dirTable) {
free(mount->dirTable);
}
if (mount->dirHashTable) {
free(mount->dirHashTable);
}
_romfsResetMount(mount, mount->id);
}
static void romfs_mountclose(romfs_mount *mount) {
if (mount->fd_type == RomfsSource_FileDescriptor) {
close(mount->fd);
}
if (mount->fd_type == RomfsSource_FileDescriptor) {
FSCmdBlock cmd;
FSInitCmdBlock(&cmd);
FSCloseFile(&mount->cafe_client, &cmd, mount->cafe_fd, FS_ERROR_FLAG_ALL);
}
romfs_free(mount);
}
int32_t romfsMount(const char *name, const char *filepath, RomfsSource source) {
romfs_mount *mount = romfs_alloc();
if (mount == NULL) {
return 99;
}
// Regular RomFS
mount->fd_type = source;
if (mount->fd_type == RomfsSource_FileDescriptor) {
mount->fd = open(filepath, 0);
if (mount->fd == -1) {
romfs_free(mount);
return -1;
}
} else if (mount->fd_type == RomfsSource_FileDescriptor_CafeOS) {
memset(&mount->cafe_client, 0, sizeof(FSClient));
if (FSAddClient(&mount->cafe_client, FS_ERROR_FLAG_ALL) != FS_STATUS_OK) {
romfs_free(mount);
return -1;
}
FSCmdBlock cmd;
FSInitCmdBlock(&cmd);
FSStatus result = FSOpenFile(&mount->cafe_client, &cmd, filepath, "r", &mount->cafe_fd, FS_ERROR_FLAG_ALL);
if (result != FS_STATUS_OK) {
FSDelClient(&mount->cafe_client, FS_ERROR_FLAG_ALL);
romfs_free(mount);
return -1;
}
}
return romfsMountCommon(name, mount);
}
int32_t romfsMountCommon(const char *name, romfs_mount *mount) {
memset(mount->name, 0, sizeof(mount->name));
strncpy(mount->name, name, sizeof(mount->name) - 1);
romfsInitMtime(mount);
if (_romfs_read(mount, 0, &mount->header, sizeof(mount->header)) != sizeof(mount->header)) {
goto fail_io;
}
if (mount->header.headerSize != 0x50) {
goto fail_io;
}
mount->dirHashTable = NULL;
mount->dirTable = NULL;
mount->fileHashTable = NULL;
mount->fileTable = NULL;
mount->dirHashTable = (uint32_t *) memalign(0x40, mount->header.dirHashTableSize);
if (!mount->dirHashTable) {
goto fail_oom;
}
if (!_romfs_read_chk(mount, mount->header.dirHashTableOff, mount->dirHashTable, mount->header.dirHashTableSize)) {
goto fail_io;
}
mount->dirTable = memalign(0x40, mount->header.dirTableSize);
if (!mount->dirTable) {
goto fail_oom;
}
if (!_romfs_read_chk(mount, mount->header.dirTableOff, mount->dirTable, mount->header.dirTableSize)) {
goto fail_io;
}
mount->fileHashTable = (uint32_t *) memalign(0x40, mount->header.fileHashTableSize);
if (!mount->fileHashTable) {
goto fail_oom;
}
if (!_romfs_read_chk(mount, mount->header.fileHashTableOff, mount->fileHashTable, mount->header.fileHashTableSize)) {
goto fail_io;
}
mount->fileTable = memalign(0x40, mount->header.fileTableSize);
if (!mount->fileTable) {
goto fail_oom;
}
if (!_romfs_read_chk(mount, mount->header.fileTableOff, mount->fileTable, mount->header.fileTableSize)) {
goto fail_io;
}
mount->cwd = romFS_root(mount);
if (AddDevice(&mount->device) < 0) {
goto fail_oom;
}
mount->setup = true;
DCFlushRange(mount, sizeof(*mount));
return 0;
fail_oom:
romfs_mountclose(mount);
return 9;
fail_io:
romfs_mountclose(mount);
return 10;
}
static void romfsInitMtime(romfs_mount *mount) {
mount->mtime = time(NULL);
}
int32_t romfsUnmount(const char *name) {
romfs_mount *mount;
char tmpname[34];
mount = romfsFindMount(name);
if (mount == NULL) {
return -1;
}
if (mount->fd_type == RomfsSource_FileDescriptor_CafeOS) {
FSDelClient(&mount->cafe_client, 0);
}
// Remove device
memset(tmpname, 0, sizeof(tmpname));
strncpy(tmpname, mount->name, sizeof(tmpname) - 2);
strncat(tmpname, ":", sizeof(tmpname) - strlen(tmpname) - 1);
RemoveDevice(tmpname);
romfs_mountclose(mount);
return 0;
}
//-----------------------------------------------------------------------------
static uint32_t calcHash(uint32_t parent, const uint8_t *name, uint32_t namelen, uint32_t total) {
uint32_t hash = parent ^123456789;
uint32_t i;
for (i = 0; i < namelen; i++) {
hash = (hash >> 5) | (hash << 27);
hash ^= name[i];
}
return hash % total;
}
static int searchForDir(romfs_mount *mount, romfs_dir *parent, const uint8_t *name, uint32_t namelen, romfs_dir **out) {
uint64_t parentOff = (uintptr_t) parent - (uintptr_t) mount->dirTable;
uint32_t hash = calcHash(parentOff, name, namelen, mount->header.dirHashTableSize / 4);
romfs_dir *curDir = NULL;
uint32_t curOff;
*out = NULL;
for (curOff = mount->dirHashTable[hash]; curOff != romFS_none; curOff = curDir->nextHash) {
curDir = romFS_dir(mount, curOff);
if (curDir == NULL) { return EFAULT; }
if (curDir->parent != parentOff) {
continue;
}
if (curDir->nameLen != namelen) {
continue;
}
if (memcmp(curDir->name, name, namelen) != 0) {
continue;
}
*out = curDir;
return 0;
}
return ENOENT;
}
static int searchForFile(romfs_mount *mount, romfs_dir *parent, const uint8_t *name, uint32_t namelen, romfs_file **out) {
uint64_t parentOff = (uintptr_t) parent - (uintptr_t) mount->dirTable;
uint32_t hash = calcHash(parentOff, name, namelen, mount->header.fileHashTableSize / 4);
romfs_file *curFile = NULL;
uint32_t curOff;
*out = NULL;
for (curOff = mount->fileHashTable[hash]; curOff != romFS_none;
curOff = curFile->nextHash) {
curFile = romFS_file(mount, curOff);
if (curFile == NULL) {
return EFAULT;
}
if (curFile->parent != parentOff) {
continue;
}
if (curFile->nameLen != namelen) {
continue;
}
if (memcmp(curFile->name, name, namelen) != 0) {
continue;
}
*out = curFile;
return 0;
}
return ENOENT;
}
static int navigateToDir(romfs_mount *mount, romfs_dir **ppDir, const char **pPath, bool isDir) {
char *colonPos = strchr(*pPath, ':');
if (colonPos) { *pPath = colonPos + 1; }
if (!**pPath) {
return EILSEQ;
}
*ppDir = mount->cwd;
if (**pPath == '/') {
*ppDir = romFS_root(mount);
(*pPath)++;
}
while (**pPath) {
char *slashPos = strchr(*pPath, '/');
char *component = __component;
if (slashPos) {
uint32_t len = slashPos - *pPath;
if (!len) {
return EILSEQ;
}
if (len > PATH_MAX) {
return ENAMETOOLONG;
}
memcpy(component, *pPath, len);
component[len] = 0;
*pPath = slashPos + 1;
} else if (isDir) {
component = (char *) *pPath;
*pPath += strlen(component);
} else {
return 0;
}
if (component[0] == '.') {
if (!component[1]) { continue; }
if (component[1] == '.' && !component[2]) {
*ppDir = romFS_dir(mount, (*ppDir)->parent);
if (!*ppDir) {
return EFAULT;
}
continue;
}
}
int ret = searchForDir(mount, *ppDir, (uint8_t *) component, strlen(component), ppDir);
if (ret != 0) {
return ret;
}
}
return 0;
}
static ino_t dir_inode(romfs_mount *mount, romfs_dir *dir) {
return (uint32_t *) dir - (uint32_t *) mount->dirTable;
}
static off_t dir_size(romfs_dir *dir) {
return sizeof(romfs_dir) + (dir->nameLen + 3) / 4;
}
static nlink_t dir_nlink(romfs_mount *mount, romfs_dir *dir) {
nlink_t count = 2; // one for self, one for parent
uint32_t offset = dir->childDir;
while (offset != romFS_none) {
romfs_dir *tmp = romFS_dir(mount, offset);
if (!tmp) { break; }
++count;
offset = tmp->sibling;
}
offset = dir->childFile;
while (offset != romFS_none) {
romfs_file *tmp = romFS_file(mount, offset);
if (!tmp) { break; }
++count;
offset = tmp->sibling;
}
return count;
}
static ino_t file_inode(romfs_mount *mount, romfs_file *file) {
return ((uint32_t *) file - (uint32_t *) mount->fileTable) + mount->header.dirTableSize / 4;
}
int romfsGetFileInfoPerPath(const char *romfs, const char *path, romfs_fileInfo *out) {
if (out == NULL) {
return -1;
}
romfs_mount *mount = (romfs_mount *) romfsFindMount(romfs);
if (mount == NULL) {
return -2;
}
romfs_dir *curDir = NULL;
int errno2 = navigateToDir(mount, &curDir, &path, false);
if (errno2 != 0) {
return -3;
}
romfs_file *file = NULL;
int err = searchForFile(mount, curDir, (uint8_t *) path, strlen(path), &file);
if (err != 0) {
return -4;
}
out->length = file->dataSize;
out->offset = mount->header.fileDataOff + file->dataOff;
return 0;
}
//-----------------------------------------------------------------------------
int romfs_open(struct _reent *r, void *fileStruct, const char *path, int flags, int mode) {
romfs_fileobj *fileobj = (romfs_fileobj *) fileStruct;
fileobj->mount = (romfs_mount *) r->deviceData;
if ((flags & O_ACCMODE) != O_RDONLY) {
r->_errno = EROFS;
return -1;
}
romfs_dir *curDir = NULL;
r->_errno = navigateToDir(fileobj->mount, &curDir, &path, false);
if (r->_errno != 0) {
return -1;
}
romfs_file *file = NULL;
int ret = searchForFile(fileobj->mount, curDir, (uint8_t *) path, strlen(path), &file);
if (ret != 0) {
if (ret == ENOENT && (flags & O_CREAT)) {
r->_errno = EROFS;
} else {
r->_errno = ret;
}
return -1;
} else if ((flags & O_CREAT) && (flags & O_EXCL)) {
r->_errno = EEXIST;
return -1;
}
fileobj->file = file;
fileobj->offset = fileobj->mount->header.fileDataOff + file->dataOff;
fileobj->pos = 0;
return 0;
}
int romfs_close(struct _reent *r, void *fd) {
return 0;
}
ssize_t romfs_read(struct _reent *r, void *fd, char *ptr, size_t len) {
romfs_fileobj *file = (romfs_fileobj *) fd;
uint64_t endPos = file->pos + len;
/* check if past end-of-file */
if (file->pos >= file->file->dataSize) {
return 0;
}
/* truncate the read to end-of-file */
if (endPos > file->file->dataSize) {
endPos = file->file->dataSize;
}
len = endPos - file->pos;
ssize_t adv = _romfs_read(file->mount, file->offset + file->pos, ptr, len);
if (adv >= 0) {
file->pos += adv;
return adv;
}
r->_errno = EIO;
return -1;
}
off_t romfs_seek(struct _reent *r, void *fd, off_t pos, int dir) {
romfs_fileobj *file = (romfs_fileobj *) fd;
off_t start;
switch (dir) {
case SEEK_SET:
start = 0;
break;
case SEEK_CUR:
start = file->pos;
break;
case SEEK_END:
start = file->file->dataSize;
break;
default:
r->_errno = EINVAL;
return -1;
}
/* don't allow negative position */
if (pos < 0) {
if (start + pos < 0) {
r->_errno = EINVAL;
return -1;
}
}
/* check for overflow */
else if (INT64_MAX - pos < start) {
r->_errno = EOVERFLOW;
return -1;
}
file->pos = start + pos;
return file->pos;
}
static void fillDir(struct stat *st, romfs_mount *mount, romfs_dir *dir) {
memset(st, 0, sizeof(*st));
st->st_ino = dir_inode(mount, dir);
st->st_mode = romFS_dir_mode;
st->st_nlink = dir_nlink(mount, dir);
st->st_size = dir_size(dir);
st->st_blksize = 512;
st->st_blocks = (st->st_blksize + 511) / 512;
st->st_atime = st->st_mtime = st->st_ctime = mount->mtime;
}
static void fillFile(struct stat *st, romfs_mount *mount, romfs_file *file) {
memset(st, 0, sizeof(struct stat));
st->st_ino = file_inode(mount, file);
st->st_mode = romFS_file_mode;
st->st_nlink = 1;
st->st_size = (off_t) file->dataSize;
st->st_blksize = 512;
st->st_blocks = (st->st_blksize + 511) / 512;
st->st_atime = st->st_mtime = st->st_ctime = mount->mtime;
}
int romfs_fstat(struct _reent *r, void *fd, struct stat *st) {
romfs_fileobj *fileobj = (romfs_fileobj *) fd;
fillFile(st, fileobj->mount, fileobj->file);
return 0;
}
int romfs_stat(struct _reent *r, const char *path, struct stat *st) {
romfs_mount *mount = (romfs_mount *) r->deviceData;
romfs_dir *curDir = NULL;
r->_errno = navigateToDir(mount, &curDir, &path, false);
if (r->_errno != 0) {
return -1;
}
if (!*path) {
fillDir(st, mount, curDir);
return 0;
}
romfs_dir *dir = NULL;
int ret = 0;
ret = searchForDir(mount, curDir, (uint8_t *) path, strlen(path), &dir);
if (ret != 0 && ret != ENOENT) {
r->_errno = ret;
return -1;
}
if (ret == 0) {
fillDir(st, mount, dir);
return 0;
}
romfs_file *file = NULL;
ret = searchForFile(mount, curDir, (uint8_t *) path, strlen(path), &file);
if (ret != 0 && ret != ENOENT) {
r->_errno = ret;
return -1;
}
if (ret == 0) {
fillFile(st, mount, file);
return 0;
}
r->_errno = ENOENT;
return -1;
}
int romfs_chdir(struct _reent *r, const char *path) {
romfs_mount *mount = (romfs_mount *) r->deviceData;
romfs_dir *curDir = NULL;
r->_errno = navigateToDir(mount, &curDir, &path, true);
if (r->_errno != 0) {
return -1;
}
mount->cwd = curDir;
return 0;
}
DIR_ITER *romfs_diropen(struct _reent *r, DIR_ITER *dirState, const char *path) {
romfs_diriter *iter = (romfs_diriter *) (dirState->dirStruct);
romfs_dir *curDir = NULL;
iter->mount = (romfs_mount *) r->deviceData;
r->_errno = navigateToDir(iter->mount, &curDir, &path, true);
if (r->_errno != 0) {
return NULL;
}
iter->dir = curDir;
iter->state = 0;
iter->childDir = curDir->childDir;
iter->childFile = curDir->childFile;
return dirState;
}
int romfs_dirreset(struct _reent *r, DIR_ITER *dirState) {
romfs_diriter *iter = (romfs_diriter *) (dirState->dirStruct);
iter->state = 0;
iter->childDir = iter->dir->childDir;
iter->childFile = iter->dir->childFile;
return 0;
}
int romfs_dirnext(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat) {
romfs_diriter *iter = (romfs_diriter *) (dirState->dirStruct);
if (iter->state == 0) {
/* '.' entry */
memset(filestat, 0, sizeof(*filestat));
filestat->st_ino = dir_inode(iter->mount, iter->dir);
filestat->st_mode = romFS_dir_mode;
strcpy(filename, ".");
iter->state = 1;
return 0;
} else if (iter->state == 1) {
/* '..' entry */
romfs_dir *dir = romFS_dir(iter->mount, iter->dir->parent);
if (!dir) {
r->_errno = EFAULT;
return -1;
}
memset(filestat, 0, sizeof(*filestat));
filestat->st_ino = dir_inode(iter->mount, dir);
filestat->st_mode = romFS_dir_mode;
strcpy(filename, "..");
iter->state = 2;
return 0;
}
if (iter->childDir != romFS_none) {
romfs_dir *dir = romFS_dir(iter->mount, iter->childDir);
if (!dir) {
r->_errno = EFAULT;
return -1;
}
iter->childDir = dir->sibling;
memset(filestat, 0, sizeof(*filestat));
filestat->st_ino = dir_inode(iter->mount, dir);
filestat->st_mode = romFS_dir_mode;
memset(filename, 0, NAME_MAX);
if (dir->nameLen >= NAME_MAX) {
r->_errno = ENAMETOOLONG;
return -1;
}
strncpy(filename, (char *) dir->name, dir->nameLen);
return 0;
} else if (iter->childFile != romFS_none) {
romfs_file *file = romFS_file(iter->mount, iter->childFile);
if (!file) {
r->_errno = EFAULT;
return -1;
}
iter->childFile = file->sibling;
memset(filestat, 0, sizeof(*filestat));
filestat->st_ino = file_inode(iter->mount, file);
filestat->st_mode = romFS_file_mode;
memset(filename, 0, NAME_MAX);
if (file->nameLen >= NAME_MAX) {
r->_errno = ENAMETOOLONG;
return -1;
}
strncpy(filename, (char *) file->name, file->nameLen);
return 0;
}
r->_errno = ENOENT;
return -1;
}
int romfs_dirclose(struct _reent *r, DIR_ITER *dirState) {
return 0;
}