#include <linux/kernel.h>
+#include "bcachefs.h"
+#include "compress.h"
+#include "disk_groups.h"
#include "opts.h"
+#include "super-io.h"
#include "util.h"
const char * const bch2_error_actions[] = {
"none",
"lz4",
"gzip",
+ "zstd",
NULL
};
NULL
};
+const char * const bch2_data_types[] = {
+ "none",
+ "sb",
+ "journal",
+ "btree",
+ "data",
+ "cached",
+ NULL
+};
+
const char * const bch2_cache_replacement_policies[] = {
"lru",
"fifo",
NULL
};
-const struct bch_option bch2_opt_table[] = {
-#define OPT_BOOL() .type = BCH_OPT_BOOL
-#define OPT_UINT(_min, _max) .type = BCH_OPT_UINT, .min = _min, .max = _max
-#define OPT_STR(_choices) .type = BCH_OPT_STR, .choices = _choices
+void bch2_opts_apply(struct bch_opts *dst, struct bch_opts src)
+{
+#define BCH_OPT(_name, ...) \
+ if (opt_defined(src, _name)) \
+ opt_set(*dst, _name, src._name);
-#define BCH_OPT(_name, _mode, _sb_opt, _bits, _type) \
- [Opt_##_name] = { \
- .name = #_name, \
- .set_sb = SET_##_sb_opt, \
- _type \
- },
- BCH_VISIBLE_OPTS()
+ BCH_OPTS()
#undef BCH_OPT
-};
+}
-static enum bch_opt_id bch2_opt_lookup(const char *name)
+bool bch2_opt_defined_by_id(const struct bch_opts *opts, enum bch_opt_id id)
{
- const struct bch_option *i;
-
- for (i = bch2_opt_table;
- i < bch2_opt_table + ARRAY_SIZE(bch2_opt_table);
- i++)
- if (!strcmp(name, i->name))
- return i - bch2_opt_table;
-
- return -1;
+ switch (id) {
+#define BCH_OPT(_name, ...) \
+ case Opt_##_name: \
+ return opt_defined(*opts, _name);
+ BCH_OPTS()
+#undef BCH_OPT
+ default:
+ BUG();
+ }
}
-static u64 bch2_opt_get(struct bch_opts *opts, enum bch_opt_id id)
+u64 bch2_opt_get_by_id(const struct bch_opts *opts, enum bch_opt_id id)
{
switch (id) {
#define BCH_OPT(_name, ...) \
case Opt_##_name: \
- return opts->_name; \
-
- BCH_VISIBLE_OPTS()
+ return opts->_name;
+ BCH_OPTS()
#undef BCH_OPT
-
default:
BUG();
}
}
-void bch2_opt_set(struct bch_opts *opts, enum bch_opt_id id, u64 v)
+void bch2_opt_set_by_id(struct bch_opts *opts, enum bch_opt_id id, u64 v)
{
switch (id) {
#define BCH_OPT(_name, ...) \
case Opt_##_name: \
- opts->_name = v; \
+ opt_set(*opts, _name, v); \
break;
-
- BCH_VISIBLE_OPTS()
+ BCH_OPTS()
#undef BCH_OPT
-
default:
BUG();
}
* Initial options from superblock - here we don't want any options undefined,
* any options the superblock doesn't specify are set to 0:
*/
-struct bch_opts bch2_sb_opts(struct bch_sb *sb)
+struct bch_opts bch2_opts_from_sb(struct bch_sb *sb)
{
struct bch_opts opts = bch2_opts_empty();
-#define BCH_OPT(_name, _mode, _sb_opt, ...) \
+#define BCH_OPT(_name, _bits, _mode, _type, _sb_opt, _default) \
if (_sb_opt != NO_SB_OPT) \
- opts._name = _sb_opt(sb);
-
+ opt_set(opts, _name, _sb_opt(sb));
BCH_OPTS()
#undef BCH_OPT
return opts;
}
-static int parse_one_opt(enum bch_opt_id id, const char *val, u64 *res)
+const struct bch_option bch2_opt_table[] = {
+#define OPT_BOOL() .type = BCH_OPT_BOOL
+#define OPT_UINT(_min, _max) .type = BCH_OPT_UINT, .min = _min, .max = _max
+#define OPT_STR(_choices) .type = BCH_OPT_STR, .choices = _choices
+#define OPT_FN(_fn) .type = BCH_OPT_FN, \
+ .parse = _fn##_parse, \
+ .to_text = _fn##_to_text
+
+#define BCH_OPT(_name, _bits, _mode, _type, _sb_opt, _default) \
+ [Opt_##_name] = { \
+ .attr = { \
+ .name = #_name, \
+ .mode = _mode == OPT_RUNTIME ? 0644 : 0444, \
+ }, \
+ .mode = _mode, \
+ .set_sb = SET_##_sb_opt, \
+ _type \
+ },
+
+ BCH_OPTS()
+#undef BCH_OPT
+};
+
+int bch2_opt_lookup(const char *name)
+{
+ const struct bch_option *i;
+
+ for (i = bch2_opt_table;
+ i < bch2_opt_table + ARRAY_SIZE(bch2_opt_table);
+ i++)
+ if (!strcmp(name, i->attr.name))
+ return i - bch2_opt_table;
+
+ return -1;
+}
+
+struct synonym {
+ const char *s1, *s2;
+};
+
+static const struct synonym bch_opt_synonyms[] = {
+ { "quota", "usrquota" },
+};
+
+static int bch2_mount_opt_lookup(const char *name)
+{
+ const struct synonym *i;
+
+ for (i = bch_opt_synonyms;
+ i < bch_opt_synonyms + ARRAY_SIZE(bch_opt_synonyms);
+ i++)
+ if (!strcmp(name, i->s1))
+ name = i->s2;
+
+ return bch2_opt_lookup(name);
+}
+
+int bch2_opt_parse(struct bch_fs *c, const struct bch_option *opt,
+ const char *val, u64 *res)
{
- const struct bch_option *opt = &bch2_opt_table[id];
ssize_t ret;
switch (opt->type) {
return -ERANGE;
break;
case BCH_OPT_STR:
- ret = bch2_read_string_list(val, opt->choices);
+ ret = match_string(opt->choices, -1, val);
if (ret < 0)
return ret;
*res = ret;
break;
+ case BCH_OPT_FN:
+ if (!c)
+ return -EINVAL;
+
+ return opt->parse(c, val, res);
+ }
+
+ return 0;
+}
+
+void bch2_opt_to_text(struct printbuf *out, struct bch_fs *c,
+ const struct bch_option *opt, u64 v,
+ unsigned flags)
+{
+ if (flags & OPT_SHOW_MOUNT_STYLE) {
+ if (opt->type == BCH_OPT_BOOL) {
+ pr_buf(out, "%s%s",
+ v ? "" : "no",
+ opt->attr.name);
+ return;
+ }
+
+ pr_buf(out, "%s=", opt->attr.name);
+ }
+
+ switch (opt->type) {
+ case BCH_OPT_BOOL:
+ case BCH_OPT_UINT:
+ pr_buf(out, "%lli", v);
+ break;
+ case BCH_OPT_STR:
+ if (flags & OPT_SHOW_FULL_LIST)
+ bch2_string_opt_to_text(out, opt->choices, v);
+ else
+ pr_buf(out, opt->choices[v]);
+ break;
+ case BCH_OPT_FN:
+ opt->to_text(out, c, v);
+ break;
+ default:
+ BUG();
+ }
+}
+
+int bch2_opt_check_may_set(struct bch_fs *c, int id, u64 v)
+{
+ int ret = 0;
+
+ switch (id) {
+ case Opt_compression:
+ case Opt_background_compression:
+ ret = bch2_check_set_has_compressed_data(c, v);
+ break;
+ case Opt_erasure_code:
+ if (v &&
+ !(c->sb.features & (1ULL << BCH_FEATURE_EC))) {
+ mutex_lock(&c->sb_lock);
+ c->disk_sb.sb->features[0] |=
+ cpu_to_le64(1ULL << BCH_FEATURE_EC);
+
+ bch2_write_super(c);
+ mutex_unlock(&c->sb_lock);
+ }
+ break;
+ }
+
+ return ret;
+}
+
+int bch2_opts_check_may_set(struct bch_fs *c)
+{
+ unsigned i;
+ int ret;
+
+ for (i = 0; i < bch2_opts_nr; i++) {
+ ret = bch2_opt_check_may_set(c, i,
+ bch2_opt_get_by_id(&c->opts, i));
+ if (ret)
+ return ret;
}
return 0;
val = opt;
if (val) {
- id = bch2_opt_lookup(name);
+ id = bch2_mount_opt_lookup(name);
if (id < 0)
- return -EINVAL;
+ goto bad_opt;
- ret = parse_one_opt(id, val, &v);
+ ret = bch2_opt_parse(NULL, &bch2_opt_table[id], val, &v);
if (ret < 0)
- return ret;
+ goto bad_val;
} else {
- id = bch2_opt_lookup(name);
+ id = bch2_mount_opt_lookup(name);
v = 1;
if (id < 0 &&
!strncmp("no", name, 2)) {
- id = bch2_opt_lookup(name + 2);
+ id = bch2_mount_opt_lookup(name + 2);
v = 0;
}
+ if (id < 0)
+ goto bad_opt;
+
if (bch2_opt_table[id].type != BCH_OPT_BOOL)
- return -EINVAL;
+ goto no_val;
}
- bch2_opt_set(opts, id, v);
+ if (bch2_opt_table[id].mode < OPT_MOUNT)
+ goto bad_opt;
+
+ if (id == Opt_acl &&
+ !IS_ENABLED(CONFIG_BCACHEFS_POSIX_ACL))
+ goto bad_opt;
+
+ if ((id == Opt_usrquota ||
+ id == Opt_grpquota) &&
+ !IS_ENABLED(CONFIG_BCACHEFS_QUOTA))
+ goto bad_opt;
+
+ bch2_opt_set_by_id(opts, id, v);
}
return 0;
+bad_opt:
+ pr_err("Bad mount option %s", name);
+ return -1;
+bad_val:
+ pr_err("Invalid value %s for mount option %s", val, name);
+ return -1;
+no_val:
+ pr_err("Mount option %s requires a value", name);
+ return -1;
}
-enum bch_opt_id bch2_parse_sysfs_opt(const char *name, const char *val,
- u64 *res)
-{
- enum bch_opt_id id = bch2_opt_lookup(name);
- int ret;
-
- if (id < 0)
- return -EINVAL;
+/* io opts: */
- ret = parse_one_opt(id, val, res);
- if (ret < 0)
- return ret;
-
- return id;
+struct bch_io_opts bch2_opts_to_inode_opts(struct bch_opts src)
+{
+ struct bch_io_opts ret = { 0 };
+#define BCH_INODE_OPT(_name, _bits) \
+ if (opt_defined(src, _name)) \
+ opt_set(ret, _name, src._name);
+ BCH_INODE_OPTS()
+#undef BCH_INODE_OPT
+ return ret;
}
-ssize_t bch2_opt_show(struct bch_opts *opts, const char *name,
- char *buf, size_t size)
+struct bch_opts bch2_inode_opts_to_opts(struct bch_io_opts src)
{
- enum bch_opt_id id = bch2_opt_lookup(name);
- const struct bch_option *opt;
- u64 v;
-
- if (id < 0)
- return -EINVAL;
+ struct bch_opts ret = { 0 };
+#define BCH_INODE_OPT(_name, _bits) \
+ if (opt_defined(src, _name)) \
+ opt_set(ret, _name, src._name);
+ BCH_INODE_OPTS()
+#undef BCH_INODE_OPT
+ return ret;
+}
- v = bch2_opt_get(opts, id);
- opt = &bch2_opt_table[id];
+void bch2_io_opts_apply(struct bch_io_opts *dst, struct bch_io_opts src)
+{
+#define BCH_INODE_OPT(_name, _bits) \
+ if (opt_defined(src, _name)) \
+ opt_set(*dst, _name, src._name);
+ BCH_INODE_OPTS()
+#undef BCH_INODE_OPT
+}
- return opt->type == BCH_OPT_STR
- ? bch2_snprint_string_list(buf, size, opt->choices, v)
- : snprintf(buf, size, "%lli\n", v);
+bool bch2_opt_is_inode_opt(enum bch_opt_id id)
+{
+ static const enum bch_opt_id inode_opt_list[] = {
+#define BCH_INODE_OPT(_name, _bits) Opt_##_name,
+ BCH_INODE_OPTS()
+#undef BCH_INODE_OPT
+ };
+ unsigned i;
+
+ for (i = 0; i < ARRAY_SIZE(inode_opt_list); i++)
+ if (inode_opt_list[i] == id)
+ return true;
+
+ return false;
}
projects / bcachefs-tools-debian / blobdiff