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libctru/libctru/source/archive_dev.c

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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 <3ds/types.h>
#include <3ds/result.h>
#include <3ds/archive.h>
#include <3ds/services/fs.h>
#include <3ds/util/utf.h>
/*! @internal
*
* @file archive_dev.c
*
* Archive Device
*/
static int archive_translate_error(Result error);
static int archive_open(struct _reent *r, void *fileStruct, const char *path, int flags, int mode);
static int archive_close(struct _reent *r, void *fd);
static ssize_t archive_write(struct _reent *r, void *fd, const char *ptr, size_t len);
static ssize_t archive_read(struct _reent *r, void *fd, char *ptr, size_t len);
static off_t archive_seek(struct _reent *r, void *fd, off_t pos, int dir);
static int archive_fstat(struct _reent *r, void *fd, struct stat *st);
static int archive_stat(struct _reent *r, const char *file, struct stat *st);
static int archive_link(struct _reent *r, const char *existing, const char *newLink);
static int archive_unlink(struct _reent *r, const char *name);
static int archive_chdir(struct _reent *r, const char *name);
static int archive_rename(struct _reent *r, const char *oldName, const char *newName);
static int archive_mkdir(struct _reent *r, const char *path, int mode);
static DIR_ITER* archive_diropen(struct _reent *r, DIR_ITER *dirState, const char *path);
static int archive_dirreset(struct _reent *r, DIR_ITER *dirState);
static int archive_dirnext(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat);
static int archive_dirclose(struct _reent *r, DIR_ITER *dirState);
static int archive_statvfs(struct _reent *r, const char *path, struct statvfs *buf);
static int archive_ftruncate(struct _reent *r, void *fd, off_t len);
static int archive_fsync(struct _reent *r, void *fd);
static int archive_chmod(struct _reent *r, const char *path, mode_t mode);
static int archive_fchmod(struct _reent *r, void *fd, mode_t mode);
static int archive_rmdir(struct _reent *r, const char *name);
/// Used for only the SD archive, about which information can actually be found
static int sdmc_statvfs(struct _reent *r, const char *path, struct statvfs *buf);
/*! @cond INTERNAL */
/*! Open file struct */
typedef struct
{
Handle fd; /*! CTRU handle */
int flags; /*! Flags used in open(2) */
u64 offset; /*! Current file offset */
} archive_file_t;
/*! archive devoptab */
static devoptab_t
archive_devoptab =
{
.name = "archive",
.structSize = sizeof(archive_file_t),
.open_r = archive_open,
.close_r = archive_close,
.write_r = archive_write,
.read_r = archive_read,
.seek_r = archive_seek,
.fstat_r = archive_fstat,
.stat_r = archive_stat,
.link_r = archive_link,
.unlink_r = archive_unlink,
.chdir_r = archive_chdir,
.rename_r = archive_rename,
.mkdir_r = archive_mkdir,
.dirStateSize = sizeof(archive_dir_t),
.diropen_r = archive_diropen,
.dirreset_r = archive_dirreset,
.dirnext_r = archive_dirnext,
.dirclose_r = archive_dirclose,
.statvfs_r = archive_statvfs,
.ftruncate_r = archive_ftruncate,
.fsync_r = archive_fsync,
.deviceData = 0,
.chmod_r = archive_chmod,
.fchmod_r = archive_fchmod,
.rmdir_r = archive_rmdir,
};
typedef struct
{
bool setup;
bool is_extdata;
s32 id;
devoptab_t device;
FS_Archive archive;
char* cwd;
char name[32];
} archive_fsdevice;
static bool archive_initialized = false;
static s32 archive_device_cwd;
static archive_fsdevice archive_devices[32];
/*! @endcond */
static __thread char __fixedpath[PATH_MAX+1];
static __thread uint16_t __utf16path[PATH_MAX+1];
static archive_fsdevice *archiveFindDevice(const char *name)
{
u32 i;
u32 total = sizeof(archive_devices) / sizeof(archive_fsdevice);
archive_fsdevice *device = NULL;
if(!archive_initialized)
return NULL;
for(i=0; i<total; i++)
{
device = &archive_devices[i];
if(name==NULL) //Find an unused device entry.
{
if(!device->setup)
return device;
}
else if(device->setup) //Find the device with the input name.
{
size_t devnamelen = strlen(device->name);
if(strncmp(device->name, name, devnamelen)==0 && (name[devnamelen]=='\0' || name[devnamelen]==':'))
return device;
}
}
return NULL;
}
static const char*
archive_fixpath(struct _reent *r,
const char *path,
archive_fsdevice **device)
{
ssize_t units;
uint32_t code;
const uint8_t *p = (const uint8_t*)path;
const char *device_path = path;
// Move the path pointer to the start of the actual path
do
{
units = decode_utf8(&code, p);
if(units < 0)
{
r->_errno = EILSEQ;
return NULL;
}
p += units;
} while(code != ':' && code != 0);
// We found a colon; p points to the actual path
if(code == ':')
path = (const char*)p;
// Make sure there are no more colons and that the
// remainder of the filename is valid UTF-8
p = (const uint8_t*)path;
do
{
units = decode_utf8(&code, p);
if(units < 0)
{
r->_errno = EILSEQ;
return NULL;
}
if(code == ':')
{
r->_errno = EINVAL;
return NULL;
}
p += units;
} while(code != 0);
archive_fsdevice *dev = NULL;
if(device != NULL && *device != NULL)
dev = *device;
else if(path != device_path)
dev = archiveFindDevice(device_path);
else if(archive_device_cwd != -1)
dev = &archive_devices[archive_device_cwd];
if(dev == NULL)
{
r->_errno = ENODEV;
return NULL;
}
if(path[0] == '/')
strncpy(__fixedpath, path, PATH_MAX);
else
{
strncpy(__fixedpath, dev->cwd, PATH_MAX);
__fixedpath[PATH_MAX] = '\0';
strncat(__fixedpath, path, PATH_MAX);
}
if(__fixedpath[PATH_MAX] != 0)
{
__fixedpath[PATH_MAX] = 0;
r->_errno = ENAMETOOLONG;
return NULL;
}
if(device)
*device = dev;
return __fixedpath;
}
static const FS_Path
archive_utf16path(struct _reent *r,
const char *path,
archive_fsdevice **device)
{
ssize_t units;
FS_Path fspath;
fspath.data = NULL;
if(archive_fixpath(r, path, device) == NULL)
return fspath;
units = utf8_to_utf16(__utf16path, (const uint8_t*)__fixedpath, PATH_MAX);
if(units < 0)
{
r->_errno = EILSEQ;
return fspath;
}
if(units >= PATH_MAX)
{
r->_errno = ENAMETOOLONG;
return fspath;
}
__utf16path[units] = 0;
fspath.type = PATH_UTF16;
fspath.size = (units+1)*sizeof(uint16_t);
fspath.data = (const u8*)__utf16path;
return fspath;
}
extern int __system_argc;
extern char** __system_argv;
static void _archiveInit(void)
{
u32 total = sizeof(archive_devices) / sizeof(archive_fsdevice);
if (!archive_initialized)
{
memset(archive_devices, 0, sizeof(archive_devices));
for (u32 i=0; i<total; i++)
{
memcpy(&archive_devices[i].device, &archive_devoptab, sizeof(archive_devoptab));
archive_devices[i].device.name = archive_devices[i].name;
archive_devices[i].device.deviceData = &archive_devices[i];
archive_devices[i].id = i;
}
archive_device_cwd = -1;
archive_initialized = true;
}
}
static int _archiveMountDevice(FS_Archive archive,
const char *deviceName,
archive_fsdevice **out_device)
{
archive_fsdevice *device = NULL;
if (archiveFindDevice(deviceName)) //Device is already mounted with the same name
goto _fail;
_archiveInit(); //Ensure driver is initialized
device = archiveFindDevice(NULL);
if(device==NULL)
goto _fail;
device->archive = archive;
memset(device->name, 0, sizeof(device->name));
strncpy(device->name, deviceName, sizeof(device->name)-1);
int dev = AddDevice(&device->device);
if(dev==-1)
goto _fail;
device->setup = 1;
device->cwd = malloc(PATH_MAX+1);
device->cwd[0] = '/';
device->cwd[1] = '\0';
if (archive_device_cwd==-1)
archive_device_cwd = device->id;
const devoptab_t *default_dev = GetDeviceOpTab("");
if(default_dev==NULL || strcmp(default_dev->name, "stdnull")==0)
setDefaultDevice(dev);
if(out_device != NULL)
*out_device=device;
return dev;
_fail:
FSUSER_CloseArchive(archive);
return -1;
}
Result archiveMount(FS_ArchiveID archiveID,
FS_Path archivePath,
const char *deviceName)
{
FS_Archive ar;
Result rc = 0;
rc = FSUSER_OpenArchive(&ar, archiveID, archivePath);
if (R_SUCCEEDED(rc))
{
archive_fsdevice* device = NULL;
rc = _archiveMountDevice(ar, deviceName, &device);
if (R_SUCCEEDED(rc))
{
/* Special handling for ExtData is necessary */
if (archiveID == ARCHIVE_EXTDATA || archiveID == ARCHIVE_SHARED_EXTDATA || archiveID == ARCHIVE_BOSS_EXTDATA || archiveID == ARCHIVE_EXTDATA_AND_BOSS_EXTDATA)
{
device->is_extdata = true;
}
}
}
return rc;
}
/*! Initialize SDMC device */
Result archiveMountSdmc(void)
{
ssize_t units;
uint32_t code;
char *p;
FS_Path sdmcPath = { PATH_EMPTY, 1, (u8*)"" };
FS_Archive sdmcArchive;
Result rc = 0;
_archiveInit();
rc = FSUSER_OpenArchive(&sdmcArchive, ARCHIVE_SDMC, sdmcPath);
if(R_SUCCEEDED(rc))
{
fsExemptFromSession(sdmcArchive);
archive_fsdevice* device;
rc = _archiveMountDevice(sdmcArchive, "sdmc", &device);
if (rc != -1)
{
if (device)
{
device->device.statvfs_r = sdmc_statvfs; // set SDMC's statvfs to the device
}
if(__system_argc != 0 && __system_argv[0] != NULL)
{
if(FindDevice(__system_argv[0]) == rc)
{
strncpy(__fixedpath,__system_argv[0],PATH_MAX);
if(__fixedpath[PATH_MAX] != 0)
{
__fixedpath[PATH_MAX] = 0;
}
else
{
char *last_slash = NULL;
p = __fixedpath;
do
{
units = decode_utf8(&code, (const uint8_t*)p);
if(units < 0)
{
last_slash = NULL;
break;
}
if(code == '/')
last_slash = p;
p += units;
} while(code != 0);
if(last_slash != NULL)
{
last_slash[0] = 0;
chdir(__fixedpath);
}
}
}
}
}
}
return rc;
}
Result archiveCommitSaveData(const char *deviceName)
{
archive_fsdevice* device = archiveFindDevice(deviceName);
if(device!=NULL)
{
return FSUSER_ControlArchive(device->archive, ARCHIVE_ACTION_COMMIT_SAVE_DATA, NULL, 0, NULL, 0);
}
return -1;
}
Result _archiveUnmountDeviceStruct(archive_fsdevice *device)
{
char name[34];
if(!device->setup)
return 0;
memset(name, 0, sizeof(name));
strncpy(name, device->name, sizeof(name)-2);
strncat(name, ":", sizeof(name)-strlen(name)-1);
RemoveDevice(name);
free(device->cwd);
FSUSER_CloseArchive(device->archive);
fsUnexemptFromSession(device->archive);
if(device->id == archive_device_cwd)
archive_device_cwd = -1;
device->setup = 0;
memset(device->name, 0, sizeof(device->name));
return 0;
}
Result archiveUnmount(const char *deviceName)
{
archive_fsdevice *device = archiveFindDevice(deviceName);
if(device==NULL)
return -1;
return _archiveUnmountDeviceStruct(device);
}
Result archiveUnmountAll(void)
{
u32 total = sizeof(archive_devices) / sizeof(archive_fsdevice);
if(!archive_initialized) return 0;
for(u32 i = 0; i < total; i++)
{
_archiveUnmountDeviceStruct(&archive_devices[i]);
}
archive_initialized = false;
return 0;
}
/*! Open a file
*
* @param[in,out] r newlib reentrancy struct
* @param[out] fileStruct Pointer to file struct to fill in
* @param[in] path Path to open
* @param[in] flags Open flags from open(2)
* @param[in] mode Permissions to set on create
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_open(struct _reent *r,
void *fileStruct,
const char *path,
int flags,
int mode)
{
Handle fd;
Result rc;
u32 archive_flags = 0;
u32 attributes = 0;
FS_Path fs_path;
archive_fsdevice *device = r->deviceData;
fs_path = archive_utf16path(r, path, &device);
if(fs_path.data == NULL)
return -1;
/* get pointer to our data */
archive_file_t *file = (archive_file_t*)fileStruct;
/* check access mode */
switch(flags & O_ACCMODE)
{
/* read-only: do not allow O_APPEND */
case O_RDONLY:
archive_flags |= FS_OPEN_READ;
if(flags & O_APPEND)
{
r->_errno = EINVAL;
return -1;
}
break;
/* write-only */
case O_WRONLY:
archive_flags |= FS_OPEN_WRITE;
break;
/* read and write */
case O_RDWR:
archive_flags |= (FS_OPEN_READ | FS_OPEN_WRITE);
break;
/* an invalid option was supplied */
default:
r->_errno = EINVAL;
return -1;
}
/* ExtData is weird and there's no good way to support writing to it through standard interfaces */
if (device->is_extdata && ((flags & O_ACCMODE) != O_RDONLY || (flags & O_CREAT)))
{
r->_errno = ENOTSUP;
return -1;
}
/* create file */
if((flags & O_CREAT))
archive_flags |= FS_OPEN_CREATE;
/* Test O_EXCL. */
if((flags & O_CREAT) && (flags & O_EXCL))
{
rc = FSUSER_CreateFile(device->archive, fs_path, attributes, 0);
if(R_FAILED(rc))
{
r->_errno = archive_translate_error(rc);
return -1;
}
}
/* set attributes */
/*if(!(mode & S_IWUSR))
attributes |= FS_ATTRIBUTE_READONLY;*/
/* open the file */
rc = FSUSER_OpenFile(&fd, device->archive, fs_path,
archive_flags, attributes);
if(R_SUCCEEDED(rc))
{
if((flags & O_ACCMODE) != O_RDONLY && (flags & O_TRUNC))
{
rc = FSFILE_SetSize(fd, 0);
if(R_FAILED(rc))
{
FSFILE_Close(fd);
r->_errno = archive_translate_error(rc);
return -1;
}
}
file->fd = fd;
file->flags = (flags & (O_ACCMODE|O_APPEND|O_SYNC));
file->offset = 0;
return 0;
}
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Close an open file
*
* @param[in,out] r newlib reentrancy struct
* @param[in] fd Pointer to archive_file_t
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_close(struct _reent *r,
void *fd)
{
Result rc;
/* get pointer to our data */
archive_file_t *file = (archive_file_t*)fd;
rc = FSFILE_Close(file->fd);
if(R_SUCCEEDED(rc))
return 0;
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Write to an open file
*
* @param[in,out] r newlib reentrancy struct
* @param[in,out] fd Pointer to archive_file_t
* @param[in] ptr Pointer to data to write
* @param[in] len Length of data to write
*
* @returns number of bytes written
* @returns -1 for error
*/
static ssize_t
archive_write(struct _reent *r,
void *fd,
const char *ptr,
size_t len)
{
Result rc;
u32 bytes;
u32 sync = 0;
/* get pointer to our data */
archive_file_t *file = (archive_file_t*)fd;
/* check that the file was opened with write access */
if((file->flags & O_ACCMODE) == O_RDONLY)
{
r->_errno = EBADF;
return -1;
}
/* check if this is synchronous or not */
if(file->flags & O_SYNC)
sync = FS_WRITE_FLUSH | FS_WRITE_UPDATE_TIME;
if(file->flags & O_APPEND)
{
/* append means write from the end of the file */
rc = FSFILE_GetSize(file->fd, &file->offset);
if(R_FAILED(rc))
{
r->_errno = archive_translate_error(rc);
return -1;
}
}
rc = FSFILE_Write(file->fd, &bytes, file->offset,
(u32*)ptr, len, sync);
if(R_FAILED(rc))
{
r->_errno = archive_translate_error(rc);
return -1;
}
file->offset += bytes;
return bytes;
}
/*! Read from an open file
*
* @param[in,out] r newlib reentrancy struct
* @param[in,out] fd Pointer to archive_file_t
* @param[out] ptr Pointer to buffer to read into
* @param[in] len Length of data to read
*
* @returns number of bytes read
* @returns -1 for error
*/
static ssize_t
archive_read(struct _reent *r,
void *fd,
char *ptr,
size_t len)
{
Result rc;
u32 bytes;
/* get pointer to our data */
archive_file_t *file = (archive_file_t*)fd;
/* check that the file was opened with read access */
if((file->flags & O_ACCMODE) == O_WRONLY)
{
r->_errno = EBADF;
return -1;
}
/* read the data */
rc = FSFILE_Read(file->fd, &bytes, file->offset, (u32*)ptr, (u32)len);
if(R_SUCCEEDED(rc))
{
/* update current file offset */
file->offset += bytes;
return (ssize_t)bytes;
}
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Update an open file's current offset
*
* @param[in,out] r newlib reentrancy struct
* @param[in,out] fd Pointer to archive_file_t
* @param[in] pos Offset to seek to
* @param[in] whence Where to seek from
*
* @returns new offset for success
* @returns -1 for error
*/
static off_t
archive_seek(struct _reent *r,
void *fd,
off_t pos,
int whence)
{
Result rc;
u64 offset;
/* get pointer to our data */
archive_file_t *file = (archive_file_t*)fd;
/* find the offset to see from */
switch(whence)
{
/* set absolute position; start offset is 0 */
case SEEK_SET:
offset = 0;
break;
/* set position relative to the current position */
case SEEK_CUR:
offset = file->offset;
break;
/* set position relative to the end of the file */
case SEEK_END:
rc = FSFILE_GetSize(file->fd, &offset);
if(R_FAILED(rc))
{
r->_errno = archive_translate_error(rc);
return -1;
}
break;
/* an invalid option was provided */
default:
r->_errno = EINVAL;
return -1;
}
/* TODO: A better check that prevents overflow. */
if(pos < 0 && offset < -pos)
{
/* don't allow seek to before the beginning of the file */
r->_errno = EINVAL;
return -1;
}
/* update the current offset */
file->offset = offset + pos;
return file->offset;
}
/*! Get file stats from an open file
*
* @param[in,out] r newlib reentrancy struct
* @param[in] fd Pointer to archive_file_t
* @param[out] st Pointer to file stats to fill
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_fstat(struct _reent *r,
void *fd,
struct stat *st)
{
Result rc;
u64 size;
archive_file_t *file = (archive_file_t*)fd;
rc = FSFILE_GetSize(file->fd, &size);
if(R_SUCCEEDED(rc))
{
memset(st, 0, sizeof(struct stat));
st->st_size = (off_t)size;
st->st_nlink = 1;
st->st_mode = S_IFREG | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
return 0;
}
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Get file stats
*
* @param[in,out] r newlib reentrancy struct
* @param[in] file Path to file
* @param[out] st Pointer to file stats to fill
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_stat(struct _reent *r,
const char *file,
struct stat *st)
{
Handle fd;
Result rc;
FS_Path fs_path;
archive_fsdevice *device = r->deviceData;
fs_path = archive_utf16path(r, file, &device);
if(fs_path.data == NULL)
return -1;
if(R_SUCCEEDED(rc = FSUSER_OpenFile(&fd, device->archive, fs_path, FS_OPEN_READ, 0)))
{
archive_file_t tmpfd = { .fd = fd };
rc = archive_fstat(r, &tmpfd, st);
FSFILE_Close(fd);
return rc;
}
else if(R_SUCCEEDED(rc = FSUSER_OpenDirectory(&fd, device->archive, fs_path)))
{
memset(st, 0, sizeof(struct stat));
st->st_nlink = 1;
st->st_mode = S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO;
FSDIR_Close(fd);
return 0;
}
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Hard link a file
*
* @param[in,out] r newlib reentrancy struct
* @param[in] existing Path of file to link
* @param[in] newLink Path of new link
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_link(struct _reent *r,
const char *existing,
const char *newLink)
{
r->_errno = ENOSYS;
return -1;
}
/*! Unlink a file
*
* @param[in,out] r newlib reentrancy struct
* @param[in] name Path of file to unlink
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_unlink(struct _reent *r,
const char *name)
{
Result rc;
FS_Path fs_path;
archive_fsdevice *device = r->deviceData;
fs_path = archive_utf16path(r, name, &device);
if(fs_path.data == NULL)
return -1;
rc = FSUSER_DeleteFile(device->archive, fs_path);
if(R_SUCCEEDED(rc))
return 0;
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Change current working directory
*
* @param[in,out] r newlib reentrancy struct
* @param[in] name Path to new working directory
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_chdir(struct _reent *r,
const char *name)
{
Handle fd;
Result rc;
FS_Path fs_path;
archive_fsdevice *device = r->deviceData;
fs_path = archive_utf16path(r, name, &device);
if(fs_path.data == NULL)
return -1;
rc = FSUSER_OpenDirectory(&fd, device->archive, fs_path);
if(R_SUCCEEDED(rc))
{
FSDIR_Close(fd);
strncpy(device->cwd, __fixedpath, PATH_MAX + 1);
device->cwd[PATH_MAX] = '\0';
return 0;
}
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Rename a file
*
* @param[in,out] r newlib reentrancy struct
* @param[in] oldName Path to rename from
* @param[in] newName Path to rename to
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_rename(struct _reent *r,
const char *oldName,
const char *newName)
{
Result rc;
FS_Path fs_path_old, fs_path_new;
static __thread uint16_t __utf16path_old[PATH_MAX+1];
archive_fsdevice *sourceDevice = r->deviceData;
archive_fsdevice *destDevice = NULL;
/* treat extdata as read-only */
if(sourceDevice->is_extdata)
{
r->_errno = ENOTSUP;
return -1;
}
fs_path_old = archive_utf16path(r, oldName, &sourceDevice);
if(fs_path_old.data == NULL)
return -1;
memcpy(__utf16path_old, __utf16path, sizeof(__utf16path));
fs_path_old.data = (const u8*)__utf16path_old;
fs_path_new = archive_utf16path(r, newName, &destDevice);
if(fs_path_new.data == NULL)
return -1;
/* moving between archives is not supported */
if(sourceDevice->archive != destDevice->archive)
{
r->_errno = ENOTSUP;
return -1;
}
rc = FSUSER_RenameFile(sourceDevice->archive, fs_path_old, sourceDevice->archive, fs_path_new);
if(R_SUCCEEDED(rc))
return 0;
rc = FSUSER_RenameDirectory(sourceDevice->archive, fs_path_old, sourceDevice->archive, fs_path_new);
if(R_SUCCEEDED(rc))
return 0;
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Create a directory
*
* @param[in,out] r newlib reentrancy struct
* @param[in] path Path of directory to create
* @param[in] mode Permissions of created directory
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_mkdir(struct _reent *r,
const char *path,
int mode)
{
Result rc;
FS_Path fs_path;
archive_fsdevice *device = r->deviceData;
/* treat extdata as read-only */
if(device->is_extdata)
{
r->_errno = ENOTSUP;
return -1;
}
fs_path = archive_utf16path(r, path, &device);
if(fs_path.data == NULL)
return -1;
/* TODO: Use mode to set directory attributes. */
rc = FSUSER_CreateDirectory(device->archive, fs_path, 0);
if(rc == 0xC82044BE)
{
r->_errno = EEXIST;
return -1;
}
else if(R_SUCCEEDED(rc))
return 0;
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Open a directory
*
* @param[in,out] r newlib reentrancy struct
* @param[in] dirState Pointer to open directory state
* @param[in] path Path of directory to open
*
* @returns dirState for success
* @returns NULL for error
*/
static DIR_ITER*
archive_diropen(struct _reent *r,
DIR_ITER *dirState,
const char *path)
{
Handle fd;
Result rc;
FS_Path fs_path;
archive_fsdevice *device = r->deviceData;
fs_path = archive_utf16path(r, path, &device);
if(fs_path.data == NULL)
return NULL;
/* get pointer to our data */
archive_dir_t *dir = (archive_dir_t*)(dirState->dirStruct);
/* open the directory */
rc = FSUSER_OpenDirectory(&fd, device->archive, fs_path);
if(R_SUCCEEDED(rc))
{
dir->magic = ARCHIVE_DIRITER_MAGIC;
dir->fd = fd;
dir->index = -1;
dir->size = 0;
memset(&dir->entry_data, 0, sizeof(dir->entry_data));
return dirState;
}
r->_errno = archive_translate_error(rc);
return NULL;
}
/*! Reset an open directory to its intial state
*
* @param[in,out] r newlib reentrancy struct
* @param[in] dirState Pointer to open directory state
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_dirreset(struct _reent *r,
DIR_ITER *dirState)
{
r->_errno = ENOSYS;
return -1;
}
/*! Fetch the next entry of an open directory
*
* @param[in,out] r newlib reentrancy struct
* @param[in] dirState Pointer to open directory state
* @param[out] filename Buffer to store entry name
* @param[out] filestat Buffer to store entry attributes
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_dirnext(struct _reent *r,
DIR_ITER *dirState,
char *filename,
struct stat *filestat)
{
Result rc;
u32 entries;
ssize_t units;
FS_DirectoryEntry *entry;
/* get pointer to our data */
archive_dir_t *dir = (archive_dir_t*)(dirState->dirStruct);
static const size_t max_entries = sizeof(dir->entry_data) / sizeof(dir->entry_data[0]);
/* check if it's in the batch already */
if(++dir->index < dir->size)
{
rc = 0;
}
else
{
/* reset batch info */
dir->index = -1;
dir->size = 0;
/* fetch the next batch */
memset(dir->entry_data, 0, sizeof(dir->entry_data));
rc = FSDIR_Read(dir->fd, &entries, max_entries, dir->entry_data);
if(R_SUCCEEDED(rc))
{
if(entries == 0)
{
/* there are no more entries; ENOENT signals end-of-directory */
r->_errno = ENOENT;
return -1;
}
dir->index = 0;
dir->size = entries;
}
}
if(R_SUCCEEDED(rc))
{
entry = &dir->entry_data[dir->index];
/* fill in the stat info */
filestat->st_ino = 0;
if(entry->attributes & FS_ATTRIBUTE_DIRECTORY)
filestat->st_mode = S_IFDIR;
else
filestat->st_mode = S_IFREG;
/* convert name from UTF-16 to UTF-8 */
memset(filename, 0, NAME_MAX);
units = utf16_to_utf8((uint8_t*)filename, entry->name, NAME_MAX);
if(units < 0)
{
r->_errno = EILSEQ;
return -1;
}
if(units >= NAME_MAX)
{
r->_errno = ENAMETOOLONG;
return -1;
}
return 0;
}
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Close an open directory
*
* @param[in,out] r newlib reentrancy struct
* @param[in] dirState Pointer to open directory state
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_dirclose(struct _reent *r,
DIR_ITER *dirState)
{
Result rc;
/* get pointer to our data */
archive_dir_t *dir = (archive_dir_t*)(dirState->dirStruct);
/* close the directory */
rc = FSDIR_Close(dir->fd);
if(R_SUCCEEDED(rc))
return 0;
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Get filesystem statistics for an archive
*
* @param[in,out] r newlib reentrancy struct
* @param[in] path Path to filesystem to get statistics of
* @param[out] buf Buffer to fill
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_statvfs(struct _reent *r,
const char *path,
struct statvfs *buf)
{
// Result rc;
// u32 totalSize, directories, files;
// bool duplicateData;
// rc = FSUSER_GetFormatInfo(&totalSize, &directories, &files, &duplicateData, )
r->_errno = ENOSYS;
return -1;
// Result rc;
// FS_ArchiveResource resource;
// bool writable = false;
// rc = FSUSER_GetArchiveResource(&resource);
// if(R_SUCCEEDED(rc))
// {
// buf->f_bsize = resource.clusterSize;
// buf->f_frsize = resource.clusterSize;
// buf->f_blocks = resource.totalClusters;
// buf->f_bfree = resource.freeClusters;
// buf->f_bavail = resource.freeClusters;
// buf->f_files = 0; //??? how to get
// buf->f_ffree = resource.freeClusters;
// buf->f_favail = resource.freeClusters;
// buf->f_fsid = 0; //??? how to get
// buf->f_flag = ST_NOSUID;
// buf->f_namemax = 0; //??? how to get
// rc = FSUSER_IsarchiveWritable(&writable);
// if(R_FAILED(rc) || !writable)
// buf->f_flag |= ST_RDONLY;
// return 0;
// }
// r->_errno = archive_translate_error(rc);
// return -1;
}
/*! Get filesystem statistics for the SD card
*
* @param[in,out] r newlib reentrancy struct
* @param[in] path Path to filesystem to get statistics of
* @param[out] buf Buffer to fill
*
* @returns 0 for success
* @returns -1 for error
*/
static int
sdmc_statvfs(struct _reent *r,
const char *path,
struct statvfs *buf)
{
Result rc;
FS_ArchiveResource resource;
bool writable = false;
rc = FSUSER_GetSdmcArchiveResource(&resource);
if(R_SUCCEEDED(rc))
{
buf->f_bsize = resource.clusterSize;
buf->f_frsize = resource.clusterSize;
buf->f_blocks = resource.totalClusters;
buf->f_bfree = resource.freeClusters;
buf->f_bavail = resource.freeClusters;
buf->f_files = 0; //??? how to get
buf->f_ffree = resource.freeClusters;
buf->f_favail = resource.freeClusters;
buf->f_fsid = 0; //??? how to get
buf->f_flag = ST_NOSUID;
buf->f_namemax = 0; //??? how to get
rc = FSUSER_IsSdmcWritable(&writable);
if(R_FAILED(rc) || !writable)
buf->f_flag |= ST_RDONLY;
return 0;
}
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Truncate an open file
*
* @param[in,out] r newlib reentrancy struct
* @param[in] fd Pointer to archive_file_t
* @param[in] len Length to truncate file to
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_ftruncate(struct _reent *r,
void *fd,
off_t len)
{
Result rc;
/* get pointer to our data */
archive_file_t *file = (archive_file_t*)fd;
/* make sure length is non-negative */
if(len < 0)
{
r->_errno = EINVAL;
return -1;
}
/* set the new file size */
rc = FSFILE_SetSize(file->fd, len);
if(R_SUCCEEDED(rc))
return 0;
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Synchronize a file to media
*
* @param[in,out] r newlib reentrancy struct
* @param[in] fd Pointer to archive_file_t
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_fsync(struct _reent *r,
void *fd)
{
Result rc;
/* get pointer to our data */
archive_file_t *file = (archive_file_t*)fd;
rc = FSFILE_Flush(file->fd);
if(R_SUCCEEDED(rc))
return 0;
r->_errno = archive_translate_error(rc);
return -1;
}
/*! Change a file's mode
*
* @param[in,out] r newlib reentrancy struct
* @param[in] path Path to file to update
* @param[in] mode New mode to set
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_chmod(struct _reent *r,
const char *path,
mode_t mode)
{
r->_errno = ENOSYS;
return -1;
}
/*! Change an open file's mode
*
* @param[in,out] r newlib reentrancy struct
* @param[in] fd Pointer to archive_file_t
* @param[in] mode New mode to set
*
* @returns 0 for success
* @returns -1 for failure
*/
static int
archive_fchmod(struct _reent *r,
void *fd,
mode_t mode)
{
r->_errno = ENOSYS;
return -1;
}
/*! Remove a directory
*
* @param[in,out] r newlib reentrancy struct
* @param[in] name Path of directory to remove
*
* @returns 0 for success
* @returns -1 for error
*/
static int
archive_rmdir(struct _reent *r,
const char *name)
{
Result rc;
FS_Path fs_path;
archive_fsdevice *device = r->deviceData;
/* treat extdata as read-only */
if(device->is_extdata)
{
r->_errno = ENOTSUP;
return -1;
}
fs_path = archive_utf16path(r, name, &device);
if(fs_path.data == NULL)
return -1;
rc = FSUSER_DeleteDirectory(device->archive, fs_path);
if(R_SUCCEEDED(rc))
return 0;
r->_errno = archive_translate_error(rc);
return -1;
}
Result
archive_getmtime(const char *name,
u64 *mtime)
{
Result rc;
FS_Path fs_path;
struct _reent r;
archive_fsdevice *device = NULL;
r._errno = 0;
fs_path = archive_utf16path(&r, name, &device);
if(r._errno != 0)
errno = r._errno;
if(fs_path.data == NULL)
return -1;
rc = FSUSER_ControlArchive(device->archive, ARCHIVE_ACTION_GET_TIMESTAMP,
(void*)fs_path.data, fs_path.size,
mtime, sizeof(*mtime));
if(rc == 0)
{
/* convert from milliseconds to seconds */
*mtime /= 1000;
/* convert from 2000-based timestamp to UNIX timestamp */
*mtime += 946684800;
}
return rc;
}
/*! Error map */
typedef struct
{
Result fs_error; //!< Error from FS service
int error; //!< POSIX errno
} error_map_t;
/*! Error table */
static const error_map_t error_table[] =
{
/* keep this list sorted! */
{ 0x082044BE, EEXIST, },
{ 0x086044D2, ENOSPC, },
{ 0xC8804478, ENOENT, },
{ 0xC92044FA, ENOENT, },
{ 0xE0E046BE, EINVAL, },
{ 0xE0E046BF, ENAMETOOLONG, },
};
static const size_t num_errors = sizeof(error_table)/sizeof(error_table[0]);
/*! Comparison function for bsearch on error_table
*
* @param[in] p1 Left side of comparison
* @param[in] p2 Right side of comparison
*
* @returns <0 if lhs < rhs
* @returns >0 if lhs > rhs
* @returns 0 if lhs == rhs
*/
static int
error_cmp(const void *p1, const void *p2)
{
const error_map_t *lhs = (const error_map_t*)p1;
const error_map_t *rhs = (const error_map_t*)p2;
if((u32)lhs->fs_error < (u32)rhs->fs_error)
return -1;
else if((u32)lhs->fs_error > (u32)rhs->fs_error)
return 1;
return 0;
}
/*! Translate FS service error to errno
*
* @param[in] error FS service error
*
* @returns errno
*/
static int
archive_translate_error(Result error)
{
error_map_t key = { .fs_error = error };
const error_map_t *rc = bsearch(&key, error_table, num_errors,
sizeof(error_map_t), error_cmp);
if(rc != NULL)
return rc->error;
return (int)error;
}
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