fs/bcachefs/opts.c

1 // SPDX-License-Identifier: GPL-2.0
10 #include "super-io.h"
103 		int ret = match_string(bch2_fsck_fix_opts, -1, val);  in bch2_opt_fix_errors_parse()
179 		return opts->_name;  in bch2_opt_get_by_id()
202 #define OPT_BOOL()		.type = BCH_OPT_BOOL, .min = 0, .max = 2
204 				.min = _min, .max = _max
206 				.min = 0, .max = ARRAY_SIZE(_choices),	\
212 		.attr	= {						\
213 			.name	= #_name,				\
228 int bch2_opt_lookup(const char *name)  in bch2_opt_lookup()  argument
235 		if (!strcmp(name, i->attr.name))  in bch2_opt_lookup()
236 			return i - bch2_opt_table;  in bch2_opt_lookup()
238 	return -1;  in bch2_opt_lookup()
249 static int bch2_mount_opt_lookup(const char *name)  in bch2_mount_opt_lookup()  argument
256 		if (!strcmp(name, i->s1))  in bch2_mount_opt_lookup()
257 			name = i->s2;  in bch2_mount_opt_lookup()
259 	return bch2_opt_lookup(name);  in bch2_mount_opt_lookup()
264 	if (v < opt->min) {  in bch2_opt_validate()
267 			       opt->attr.name, opt->min);  in bch2_opt_validate()
268 		return -BCH_ERR_ERANGE_option_too_small;  in bch2_opt_validate()
271 	if (opt->max && v >= opt->max) {  in bch2_opt_validate()
273 			prt_printf(err, "%s: too big (max %llu)",  in bch2_opt_validate()
274 			       opt->attr.name, opt->max);  in bch2_opt_validate()
275 		return -BCH_ERR_ERANGE_option_too_big;  in bch2_opt_validate()
278 	if ((opt->flags & OPT_SB_FIELD_SECTORS) && (v & 511)) {  in bch2_opt_validate()
281 			       opt->attr.name);  in bch2_opt_validate()
282 		return -BCH_ERR_opt_parse_error;  in bch2_opt_validate()
285 	if ((opt->flags & OPT_MUST_BE_POW_2) && !is_power_of_2(v)) {  in bch2_opt_validate()
288 			       opt->attr.name);  in bch2_opt_validate()
289 		return -BCH_ERR_opt_parse_error;  in bch2_opt_validate()
292 	if (opt->fn.validate)  in bch2_opt_validate()
293 		return opt->fn.validate(v, err);  in bch2_opt_validate()
305 	switch (opt->type) {  in bch2_opt_parse()
316 				prt_printf(err, "%s: must be bool", opt->attr.name);  in bch2_opt_parse()
323 				   opt->attr.name);  in bch2_opt_parse()
324 			return -EINVAL;  in bch2_opt_parse()
327 		ret = opt->flags & OPT_HUMAN_READABLE  in bch2_opt_parse()
333 					   opt->attr.name);  in bch2_opt_parse()
340 				   opt->attr.name);  in bch2_opt_parse()
341 			return -EINVAL;  in bch2_opt_parse()
344 		ret = match_string(opt->choices, -1, val);  in bch2_opt_parse()
348 					   opt->attr.name);  in bch2_opt_parse()
355 		ret = opt->fn.parse(c, val, res, err);  in bch2_opt_parse()
359 					   opt->attr.name);  in bch2_opt_parse()
373 		if (opt->type == BCH_OPT_BOOL) {  in bch2_opt_to_text()
376 			       opt->attr.name);  in bch2_opt_to_text()
380 		prt_printf(out, "%s=", opt->attr.name);  in bch2_opt_to_text()
383 	switch (opt->type) {  in bch2_opt_to_text()
386 		if (opt->flags & OPT_HUMAN_READABLE)  in bch2_opt_to_text()
393 			prt_string_option(out, opt->choices, v);  in bch2_opt_to_text()
395 			prt_str(out, opt->choices[v]);  in bch2_opt_to_text()
398 		opt->fn.to_text(out, c, sb, v);  in bch2_opt_to_text()
430 				bch2_opt_get_by_id(&c->opts, i));  in bch2_opts_check_may_set()
442 	char *opt, *name, *val;  in bch2_parse_mount_opts()  local
452 	 * starting with a comma - weird.  in bch2_parse_mount_opts()
459 		return -1;  in bch2_parse_mount_opts()
463 		name	= strsep(&opt, "=");  in bch2_parse_mount_opts()
466 		id = bch2_mount_opt_lookup(name);  in bch2_parse_mount_opts()
471 		    !strncmp("no", name, 2)) {  in bch2_parse_mount_opts()
472 			id = bch2_mount_opt_lookup(name + 2);  in bch2_parse_mount_opts()
503 	pr_err("Bad mount option %s", name);  in bch2_parse_mount_opts()
504 	ret = -1;  in bch2_parse_mount_opts()
508 	ret = -1;  in bch2_parse_mount_opts()
521 	v = opt->get_sb(sb);  in bch2_opt_from_sb()
523 	if (opt->flags & OPT_SB_FIELD_ILOG2)  in bch2_opt_from_sb()
526 	if (opt->flags & OPT_SB_FIELD_SECTORS)  in bch2_opt_from_sb()
533  * Initial options from superblock - here we don't want any options undefined,
543 		if (opt->get_sb == BCH2_NO_SB_OPT)  in bch2_opts_from_sb()
554 	if (opt->set_sb == SET_BCH2_NO_SB_OPT)  in __bch2_opt_set_sb()
557 	if (opt->flags & OPT_SB_FIELD_SECTORS)  in __bch2_opt_set_sb()
560 	if (opt->flags & OPT_SB_FIELD_ILOG2)  in __bch2_opt_set_sb()
563 	opt->set_sb(sb, v);  in __bch2_opt_set_sb()
568 	if (opt->set_sb == SET_BCH2_NO_SB_OPT)  in bch2_opt_set_sb()
571 	mutex_lock(&c->sb_lock);  in bch2_opt_set_sb()
572 	__bch2_opt_set_sb(c->disk_sb.sb, opt, v);  in bch2_opt_set_sb()
574 	mutex_unlock(&c->sb_lock);  in bch2_opt_set_sb()