/*! Truncate an open file
*
* @param[in,out] r newlib reentrancy struct
* @param[in] fd Pointer to sdmc_file_t
* @param[in] len Length to truncate file to
*
* @returns 0 for success
* @returns -1 for error
*/
static int
sdmc_ftruncate(struct _reent *r,
int fd,
off_t len)
{
Result rc;
/* get pointer to our data */
sdmc_file_t *file = (sdmc_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(rc == 0)
return 0;
r->_errno = rc;
return -1;
}
/*! 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
sdmc_open(struct _reent *r,
void *fileStruct,
const char *path,
int flags,
int mode)
{
Handle fd;
Result rc;
u32 sdmc_flags = 0;
u32 attributes = 0;
FS_Path fs_path;
fs_path = sdmc_utf16path(r, path);
if(fs_path.data == NULL)
return -1;
/* get pointer to our data */
sdmc_file_t *file = (sdmc_file_t*)fileStruct;
/* check access mode */
switch(flags & O_ACCMODE)
{
/* read-only: do not allow O_APPEND */
case O_RDONLY:
sdmc_flags |= FS_OPEN_READ;
if(flags & O_APPEND)
{
r->_errno = EINVAL;
return -1;
}
break;
/* write-only */
case O_WRONLY:
sdmc_flags |= FS_OPEN_WRITE;
break;
/* read and write */
case O_RDWR:
sdmc_flags |= (FS_OPEN_READ | FS_OPEN_WRITE);
break;
/* an invalid option was supplied */
default:
r->_errno = EINVAL;
return -1;
}
/* create file */
if(flags & O_CREAT)
sdmc_flags |= FS_OPEN_CREATE;
/* Test O_EXCL. */
if((flags & O_CREAT) && (flags & O_EXCL))
{
rc = FSUSER_CreateFile(sdmcArchive, fs_path, attributes, 0);
if(R_FAILED(rc))
{
r->_errno = sdmc_translate_error(rc);
return -1;
}
}
/* set attributes */
/*if(!(mode & S_IWUSR))
attributes |= FS_ATTRIBUTE_READONLY;*/
/* open the file */
rc = FSUSER_OpenFile(&fd, sdmcArchive, fs_path,
sdmc_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 = sdmc_translate_error(rc);
return -1;
}
}
file->fd = fd;
file->flags = (flags & (O_ACCMODE|O_APPEND|O_SYNC));
file->offset = 0;
return 0;
}
r->_errno = sdmc_translate_error(rc);
return -1;
}
static void _vf3dTruncate(struct VFile* vf, size_t size) {
struct VFile3DS* vf3d = (struct VFile3DS*) vf;
FSFILE_SetSize(vf3d->handle, size);
}
