174 void fsg_lun_close(struct fsg_lun *curlun)  in fsg_lun_close()  argument
176 	if (curlun->filp) {  in fsg_lun_close()
177 		LDBG(curlun, "close backing file\n");  in fsg_lun_close()
178 		fput(curlun->filp);  in fsg_lun_close()
179 		curlun->filp = NULL;  in fsg_lun_close()
184 int fsg_lun_open(struct fsg_lun *curlun, const char *filename)  in fsg_lun_open()  argument
197 	ro = curlun->initially_ro;  in fsg_lun_open()
206 		LINFO(curlun, "unable to open backing file: %s\n", filename);  in fsg_lun_open()
215 		LINFO(curlun, "invalid file type: %s\n", filename);  in fsg_lun_open()
224 		LINFO(curlun, "file not readable: %s\n", filename);  in fsg_lun_open()
232 		LINFO(curlun, "unable to find file size: %s\n", filename);  in fsg_lun_open()
237 	if (curlun->cdrom) {  in fsg_lun_open()
250 	if (curlun->cdrom) {  in fsg_lun_open()
254 			LINFO(curlun, "file too big: %s\n", filename);  in fsg_lun_open()
255 			LINFO(curlun, "using only first %d blocks\n",  in fsg_lun_open()
260 		LINFO(curlun, "file too small: %s\n", filename);  in fsg_lun_open()
265 	if (fsg_lun_is_open(curlun))  in fsg_lun_open()
266 		fsg_lun_close(curlun);  in fsg_lun_open()
268 	curlun->blksize = blksize;  in fsg_lun_open()
269 	curlun->blkbits = blkbits;  in fsg_lun_open()
270 	curlun->ro = ro;  in fsg_lun_open()
271 	curlun->filp = filp;  in fsg_lun_open()
272 	curlun->file_length = size;  in fsg_lun_open()
273 	curlun->num_sectors = num_sectors;  in fsg_lun_open()
274 	LDBG(curlun, "open backing file: %s\n", filename);  in fsg_lun_open()
290 int fsg_lun_fsync_sub(struct fsg_lun *curlun)  in fsg_lun_fsync_sub()  argument
292 	struct file	*filp = curlun->filp;  in fsg_lun_fsync_sub()
294 	if (curlun->ro || !filp)  in fsg_lun_fsync_sub()
322 ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf)  in fsg_show_ro()  argument
324 	return sprintf(buf, "%d\n", fsg_lun_is_open(curlun)  in fsg_show_ro()
325 				  ? curlun->ro  in fsg_show_ro()
326 				  : curlun->initially_ro);  in fsg_show_ro()
330 ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf)  in fsg_show_nofua()  argument
332 	return sprintf(buf, "%u\n", curlun->nofua);  in fsg_show_nofua()
336 ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,  in fsg_show_file()  argument
343 	if (fsg_lun_is_open(curlun)) {	/* Get the complete pathname */  in fsg_show_file()
344 		p = file_path(curlun->filp, buf, PAGE_SIZE - 1);  in fsg_show_file()
362 ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf)  in fsg_show_cdrom()  argument
364 	return sprintf(buf, "%u\n", curlun->cdrom);  in fsg_show_cdrom()
368 ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf)  in fsg_show_removable()  argument
370 	return sprintf(buf, "%u\n", curlun->removable);  in fsg_show_removable()
377 static ssize_t _fsg_store_ro(struct fsg_lun *curlun, bool ro)  in _fsg_store_ro()  argument
379 	if (fsg_lun_is_open(curlun)) {  in _fsg_store_ro()
380 		LDBG(curlun, "read-only status change prevented\n");  in _fsg_store_ro()
384 	curlun->ro = ro;  in _fsg_store_ro()
385 	curlun->initially_ro = ro;  in _fsg_store_ro()
386 	LDBG(curlun, "read-only status set to %d\n", curlun->ro);  in _fsg_store_ro()
391 ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem,  in fsg_store_ro()  argument
406 	rc = _fsg_store_ro(curlun, ro);  in fsg_store_ro()
415 ssize_t fsg_store_nofua(struct fsg_lun *curlun, const char *buf, size_t count)  in fsg_store_nofua()  argument
425 	if (!nofua && curlun->nofua)  in fsg_store_nofua()
426 		fsg_lun_fsync_sub(curlun);  in fsg_store_nofua()
428 	curlun->nofua = nofua;  in fsg_store_nofua()
434 ssize_t fsg_store_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,  in fsg_store_file()  argument
439 	if (curlun->prevent_medium_removal && fsg_lun_is_open(curlun)) {  in fsg_store_file()
440 		LDBG(curlun, "eject attempt prevented\n");  in fsg_store_file()
452 		rc = fsg_lun_open(curlun, buf);  in fsg_store_file()
454 			curlun->unit_attention_data =  in fsg_store_file()
456 	} else if (fsg_lun_is_open(curlun)) {  in fsg_store_file()
457 		fsg_lun_close(curlun);  in fsg_store_file()
458 		curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT;  in fsg_store_file()
465 ssize_t fsg_store_cdrom(struct fsg_lun *curlun, struct rw_semaphore *filesem,  in fsg_store_cdrom()  argument
476 	ret = cdrom ? _fsg_store_ro(curlun, true) : 0;  in fsg_store_cdrom()
479 		curlun->cdrom = cdrom;  in fsg_store_cdrom()
488 ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf,  in fsg_store_removable()  argument
498 	curlun->removable = removable;  in fsg_store_removable()