168 void fsg_lun_close(struct fsg_lun *curlun)  in fsg_lun_close()  argument
170 	if (curlun->filp) {  in fsg_lun_close()
171 		LDBG(curlun, "close backing file\n");  in fsg_lun_close()
172 		fput(curlun->filp);  in fsg_lun_close()
173 		curlun->filp = NULL;  in fsg_lun_close()
178 int fsg_lun_open(struct fsg_lun *curlun, const char *filename)  in fsg_lun_open()  argument
191 	ro = curlun->initially_ro;  in fsg_lun_open()
200 		LINFO(curlun, "unable to open backing file: %s\n", filename);  in fsg_lun_open()
209 		LINFO(curlun, "invalid file type: %s\n", filename);  in fsg_lun_open()
218 		LINFO(curlun, "file not readable: %s\n", filename);  in fsg_lun_open()
226 		LINFO(curlun, "unable to find file size: %s\n", filename);  in fsg_lun_open()
231 	if (curlun->cdrom) {  in fsg_lun_open()
244 	if (curlun->cdrom) {  in fsg_lun_open()
248 			LINFO(curlun, "file too big: %s\n", filename);  in fsg_lun_open()
249 			LINFO(curlun, "using only first %d blocks\n",  in fsg_lun_open()
254 		LINFO(curlun, "file too small: %s\n", filename);  in fsg_lun_open()
259 	if (fsg_lun_is_open(curlun))  in fsg_lun_open()
260 		fsg_lun_close(curlun);  in fsg_lun_open()
262 	curlun->blksize = blksize;  in fsg_lun_open()
263 	curlun->blkbits = blkbits;  in fsg_lun_open()
264 	curlun->ro = ro;  in fsg_lun_open()
265 	curlun->filp = filp;  in fsg_lun_open()
266 	curlun->file_length = size;  in fsg_lun_open()
267 	curlun->num_sectors = num_sectors;  in fsg_lun_open()
268 	LDBG(curlun, "open backing file: %s\n", filename);  in fsg_lun_open()
284 int fsg_lun_fsync_sub(struct fsg_lun *curlun)  in fsg_lun_fsync_sub()  argument
286 	struct file	*filp = curlun->filp;  in fsg_lun_fsync_sub()
288 	if (curlun->ro || !filp)  in fsg_lun_fsync_sub()
318 ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf)  in fsg_show_ro()  argument
320 	return sprintf(buf, "%d\n", fsg_lun_is_open(curlun)  in fsg_show_ro()
321 				  ? curlun->ro  in fsg_show_ro()
322 				  : curlun->initially_ro);  in fsg_show_ro()
326 ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf)  in fsg_show_nofua()  argument
328 	return sprintf(buf, "%u\n", curlun->nofua);  in fsg_show_nofua()
332 ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,  in fsg_show_file()  argument
339 	if (fsg_lun_is_open(curlun)) {	/* Get the complete pathname */  in fsg_show_file()
340 		p = file_path(curlun->filp, buf, PAGE_SIZE - 1);  in fsg_show_file()
358 ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf)  in fsg_show_cdrom()  argument
360 	return sprintf(buf, "%u\n", curlun->cdrom);  in fsg_show_cdrom()
364 ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf)  in fsg_show_removable()  argument
366 	return sprintf(buf, "%u\n", curlun->removable);  in fsg_show_removable()
370 ssize_t fsg_show_inquiry_string(struct fsg_lun *curlun, char *buf)  in fsg_show_inquiry_string()  argument
372 	return sprintf(buf, "%s\n", curlun->inquiry_string);  in fsg_show_inquiry_string()
379 static ssize_t _fsg_store_ro(struct fsg_lun *curlun, bool ro)  in _fsg_store_ro()  argument
381 	if (fsg_lun_is_open(curlun)) {  in _fsg_store_ro()
382 		LDBG(curlun, "read-only status change prevented\n");  in _fsg_store_ro()
386 	curlun->ro = ro;  in _fsg_store_ro()
387 	curlun->initially_ro = ro;  in _fsg_store_ro()
388 	LDBG(curlun, "read-only status set to %d\n", curlun->ro);  in _fsg_store_ro()
393 ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem,  in fsg_store_ro()  argument
408 	rc = _fsg_store_ro(curlun, ro);  in fsg_store_ro()
417 ssize_t fsg_store_nofua(struct fsg_lun *curlun, const char *buf, size_t count)  in fsg_store_nofua()  argument
427 	if (!nofua && curlun->nofua)  in fsg_store_nofua()
428 		fsg_lun_fsync_sub(curlun);  in fsg_store_nofua()
430 	curlun->nofua = nofua;  in fsg_store_nofua()
436 ssize_t fsg_store_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,  in fsg_store_file()  argument
441 	if (curlun->prevent_medium_removal && fsg_lun_is_open(curlun)) {  in fsg_store_file()
442 		LDBG(curlun, "eject attempt prevented\n");  in fsg_store_file()
454 		rc = fsg_lun_open(curlun, buf);  in fsg_store_file()
456 			curlun->unit_attention_data =  in fsg_store_file()
458 	} else if (fsg_lun_is_open(curlun)) {  in fsg_store_file()
459 		fsg_lun_close(curlun);  in fsg_store_file()
460 		curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT;  in fsg_store_file()
467 ssize_t fsg_store_cdrom(struct fsg_lun *curlun, struct rw_semaphore *filesem,  in fsg_store_cdrom()  argument
478 	ret = cdrom ? _fsg_store_ro(curlun, true) : 0;  in fsg_store_cdrom()
481 		curlun->cdrom = cdrom;  in fsg_store_cdrom()
490 ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf,  in fsg_store_removable()  argument
500 	curlun->removable = removable;  in fsg_store_removable()
506 ssize_t fsg_store_inquiry_string(struct fsg_lun *curlun, const char *buf,  in fsg_store_inquiry_string()  argument
509 	const size_t len = min(count, sizeof(curlun->inquiry_string));  in fsg_store_inquiry_string()
512 		curlun->inquiry_string[0] = 0;  in fsg_store_inquiry_string()
514 		snprintf(curlun->inquiry_string,  in fsg_store_inquiry_string()
515 			 sizeof(curlun->inquiry_string), "%-28s", buf);  in fsg_store_inquiry_string()
516 		if (curlun->inquiry_string[len-1] == '\n')  in fsg_store_inquiry_string()
517 			curlun->inquiry_string[len-1] = ' ';  in fsg_store_inquiry_string()
524 ssize_t fsg_store_forced_eject(struct fsg_lun *curlun, struct rw_semaphore *filesem,  in fsg_store_forced_eject()  argument
533 	curlun->prevent_medium_removal = 0;  in fsg_store_forced_eject()
534 	ret = fsg_store_file(curlun, filesem, "", 0);  in fsg_store_forced_eject()