+// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
+#include "bcachefs.h"
+#include "compress.h"
+#include "disk_groups.h"
+#include "error.h"
#include "opts.h"
+#include "super-io.h"
#include "util.h"
+#define x(t, n, ...) [n] = #t,
+
const char * const bch2_error_actions[] = {
- "continue",
- "remount-ro",
- "panic",
+ BCH_ERROR_ACTIONS()
+ NULL
+};
+
+const char * const bch2_fsck_fix_opts[] = {
+ BCH_FIX_ERRORS_OPTS()
+ NULL
+};
+
+const char * const bch2_version_upgrade_opts[] = {
+ BCH_VERSION_UPGRADE_OPTS()
+ NULL
+};
+
+const char * const bch2_sb_features[] = {
+ BCH_SB_FEATURES()
+ NULL
+};
+
+const char * const bch2_sb_compat[] = {
+ BCH_SB_COMPAT()
+ NULL
+};
+
+const char * const __bch2_btree_ids[] = {
+ BCH_BTREE_IDS()
NULL
};
const char * const bch2_csum_types[] = {
- "none",
- "crc32c",
- "crc64",
+ BCH_CSUM_TYPES()
+ NULL
+};
+
+const char * const bch2_csum_opts[] = {
+ BCH_CSUM_OPTS()
NULL
};
const char * const bch2_compression_types[] = {
- "none",
- "lz4",
- "gzip",
+ BCH_COMPRESSION_TYPES()
+ NULL
+};
+
+const char * const bch2_compression_opts[] = {
+ BCH_COMPRESSION_OPTS()
NULL
};
const char * const bch2_str_hash_types[] = {
- "crc32c",
- "crc64",
- "siphash",
+ BCH_STR_HASH_TYPES()
NULL
};
-const char * const bch2_cache_replacement_policies[] = {
- "lru",
- "fifo",
- "random",
+const char * const bch2_str_hash_opts[] = {
+ BCH_STR_HASH_OPTS()
NULL
};
-/* Default is -1; we skip past it for struct cached_dev's cache mode */
-const char * const bch2_cache_modes[] = {
- "default",
- "writethrough",
- "writeback",
- "writearound",
- "none",
+const char * const bch2_data_types[] = {
+ BCH_DATA_TYPES()
NULL
};
-const char * const bch2_dev_state[] = {
- "readwrite",
- "readonly",
- "failed",
- "spare",
+const char * const bch2_member_states[] = {
+ BCH_MEMBER_STATES()
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
+const char * const bch2_jset_entry_types[] = {
+ BCH_JSET_ENTRY_TYPES()
+ NULL
+};
-#define BCH_OPT(_name, _mode, _sb_opt, _bits, _type) \
- [Opt_##_name] = { \
- .name = #_name, \
- .set_sb = SET_##_sb_opt, \
- _type \
- },
- BCH_VISIBLE_OPTS()
-#undef BCH_OPT
+const char * const bch2_fs_usage_types[] = {
+ BCH_FS_USAGE_TYPES()
+ NULL
};
-static int bch2_opt_lookup(const char *name)
+#undef x
+
+static int bch2_opt_fix_errors_parse(struct bch_fs *c, const char *val, u64 *res,
+ struct printbuf *err)
{
- const struct bch_option *i;
+ if (!val) {
+ *res = FSCK_FIX_yes;
+ } else {
+ int ret = match_string(bch2_fsck_fix_opts, -1, val);
- 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;
+ if (ret < 0 && err)
+ prt_str(err, "fix_errors: invalid selection");
+ if (ret < 0)
+ return ret;
+ *res = ret;
+ }
- return -1;
+ return 0;
+}
+
+static void bch2_opt_fix_errors_to_text(struct printbuf *out,
+ struct bch_fs *c,
+ struct bch_sb *sb,
+ u64 v)
+{
+ prt_str(out, bch2_fsck_fix_opts[v]);
+}
+
+#define bch2_opt_fix_errors (struct bch_opt_fn) { \
+ .parse = bch2_opt_fix_errors_parse, \
+ .to_text = bch2_opt_fix_errors_to_text, \
+}
+
+const char * const bch2_d_types[BCH_DT_MAX] = {
+ [DT_UNKNOWN] = "unknown",
+ [DT_FIFO] = "fifo",
+ [DT_CHR] = "chr",
+ [DT_DIR] = "dir",
+ [DT_BLK] = "blk",
+ [DT_REG] = "reg",
+ [DT_LNK] = "lnk",
+ [DT_SOCK] = "sock",
+ [DT_WHT] = "whiteout",
+ [DT_SUBVOL] = "subvol",
+};
+
+u64 BCH2_NO_SB_OPT(const struct bch_sb *sb)
+{
+ BUG();
}
-static u64 bch2_opt_get(struct bch_opts *opts, enum bch_opt_id id)
+void SET_BCH2_NO_SB_OPT(struct bch_sb *sb, u64 v)
+{
+ BUG();
+}
+
+void bch2_opts_apply(struct bch_opts *dst, struct bch_opts src)
+{
+#define x(_name, ...) \
+ if (opt_defined(src, _name)) \
+ opt_set(*dst, _name, src._name);
+
+ BCH_OPTS()
+#undef x
+}
+
+bool bch2_opt_defined_by_id(const struct bch_opts *opts, enum bch_opt_id id)
{
switch (id) {
-#define BCH_OPT(_name, ...) \
+#define x(_name, ...) \
case Opt_##_name: \
- return opts->_name; \
-
- BCH_VISIBLE_OPTS()
-#undef BCH_OPT
+ return opt_defined(*opts, _name);
+ BCH_OPTS()
+#undef x
+ default:
+ BUG();
+ }
+}
+u64 bch2_opt_get_by_id(const struct bch_opts *opts, enum bch_opt_id id)
+{
+ switch (id) {
+#define x(_name, ...) \
+ case Opt_##_name: \
+ return opts->_name;
+ BCH_OPTS()
+#undef x
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, ...) \
+#define x(_name, ...) \
case Opt_##_name: \
- opts->_name = v; \
+ opt_set(*opts, _name, v); \
break;
-
- BCH_VISIBLE_OPTS()
-#undef BCH_OPT
-
+ BCH_OPTS()
+#undef x
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)
+const struct bch_option bch2_opt_table[] = {
+#define OPT_BOOL() .type = BCH_OPT_BOOL, .min = 0, .max = 2
+#define OPT_UINT(_min, _max) .type = BCH_OPT_UINT, \
+ .min = _min, .max = _max
+#define OPT_STR(_choices) .type = BCH_OPT_STR, \
+ .min = 0, .max = ARRAY_SIZE(_choices), \
+ .choices = _choices
+#define OPT_FN(_fn) .type = BCH_OPT_FN, .fn = _fn
+
+#define x(_name, _bits, _flags, _type, _sb_opt, _default, _hint, _help) \
+ [Opt_##_name] = { \
+ .attr = { \
+ .name = #_name, \
+ .mode = (_flags) & OPT_RUNTIME ? 0644 : 0444, \
+ }, \
+ .flags = _flags, \
+ .hint = _hint, \
+ .help = _help, \
+ .get_sb = _sb_opt, \
+ .set_sb = SET_##_sb_opt, \
+ _type \
+ },
+
+ BCH_OPTS()
+#undef x
+};
+
+int bch2_opt_lookup(const char *name)
{
- struct bch_opts opts = bch2_opts_empty();
+ const struct bch_option *i;
-#define BCH_OPT(_name, _mode, _sb_opt, ...) \
- if (_sb_opt != NO_SB_OPT) \
- opts._name = _sb_opt(sb);
+ 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;
- BCH_OPTS()
-#undef BCH_OPT
+ 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;
- return opts;
+ 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);
}
-static int parse_one_opt(enum bch_opt_id id, const char *val, u64 *res)
+int bch2_opt_validate(const struct bch_option *opt, u64 v, struct printbuf *err)
+{
+ if (v < opt->min) {
+ if (err)
+ prt_printf(err, "%s: too small (min %llu)",
+ opt->attr.name, opt->min);
+ return -BCH_ERR_ERANGE_option_too_small;
+ }
+
+ if (opt->max && v >= opt->max) {
+ if (err)
+ prt_printf(err, "%s: too big (max %llu)",
+ opt->attr.name, opt->max);
+ return -BCH_ERR_ERANGE_option_too_big;
+ }
+
+ if ((opt->flags & OPT_SB_FIELD_SECTORS) && (v & 511)) {
+ if (err)
+ prt_printf(err, "%s: not a multiple of 512",
+ opt->attr.name);
+ return -BCH_ERR_opt_parse_error;
+ }
+
+ if ((opt->flags & OPT_MUST_BE_POW_2) && !is_power_of_2(v)) {
+ if (err)
+ prt_printf(err, "%s: must be a power of two",
+ opt->attr.name);
+ return -BCH_ERR_opt_parse_error;
+ }
+
+ if (opt->fn.validate)
+ return opt->fn.validate(v, err);
+
+ return 0;
+}
+
+int bch2_opt_parse(struct bch_fs *c,
+ const struct bch_option *opt,
+ const char *val, u64 *res,
+ struct printbuf *err)
{
- const struct bch_option *opt = &bch2_opt_table[id];
ssize_t ret;
switch (opt->type) {
case BCH_OPT_BOOL:
- ret = kstrtou64(val, 10, res);
- if (ret < 0)
- return ret;
+ if (val) {
+ ret = kstrtou64(val, 10, res);
+ } else {
+ ret = 0;
+ *res = 1;
+ }
- if (*res > 1)
- return -ERANGE;
+ if (ret < 0 || (*res != 0 && *res != 1)) {
+ if (err)
+ prt_printf(err, "%s: must be bool", opt->attr.name);
+ return ret;
+ }
break;
case BCH_OPT_UINT:
- ret = kstrtou64(val, 10, res);
- if (ret < 0)
- return ret;
+ if (!val) {
+ prt_printf(err, "%s: required value",
+ opt->attr.name);
+ return -EINVAL;
+ }
- if (*res < opt->min || *res >= opt->max)
- return -ERANGE;
+ ret = opt->flags & OPT_HUMAN_READABLE
+ ? bch2_strtou64_h(val, res)
+ : kstrtou64(val, 10, res);
+ if (ret < 0) {
+ if (err)
+ prt_printf(err, "%s: must be a number",
+ opt->attr.name);
+ return ret;
+ }
break;
case BCH_OPT_STR:
- ret = bch2_read_string_list(val, opt->choices);
- if (ret < 0)
+ if (!val) {
+ prt_printf(err, "%s: required value",
+ opt->attr.name);
+ return -EINVAL;
+ }
+
+ ret = match_string(opt->choices, -1, val);
+ if (ret < 0) {
+ if (err)
+ prt_printf(err, "%s: invalid selection",
+ opt->attr.name);
return ret;
+ }
*res = ret;
break;
+ case BCH_OPT_FN:
+ ret = opt->fn.parse(c, val, res, err);
+ if (ret < 0) {
+ if (err)
+ prt_printf(err, "%s: parse error",
+ opt->attr.name);
+ return ret;
+ }
+ }
+
+ return bch2_opt_validate(opt, *res, err);
+}
+
+void bch2_opt_to_text(struct printbuf *out,
+ struct bch_fs *c, struct bch_sb *sb,
+ const struct bch_option *opt, u64 v,
+ unsigned flags)
+{
+ if (flags & OPT_SHOW_MOUNT_STYLE) {
+ if (opt->type == BCH_OPT_BOOL) {
+ prt_printf(out, "%s%s",
+ v ? "" : "no",
+ opt->attr.name);
+ return;
+ }
+
+ prt_printf(out, "%s=", opt->attr.name);
+ }
+
+ switch (opt->type) {
+ case BCH_OPT_BOOL:
+ case BCH_OPT_UINT:
+ if (opt->flags & OPT_HUMAN_READABLE)
+ prt_human_readable_u64(out, v);
+ else
+ prt_printf(out, "%lli", v);
+ break;
+ case BCH_OPT_STR:
+ if (flags & OPT_SHOW_FULL_LIST)
+ prt_string_option(out, opt->choices, v);
+ else
+ prt_str(out, opt->choices[v]);
+ break;
+ case BCH_OPT_FN:
+ opt->fn.to_text(out, c, sb, 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)
+ bch2_check_set_feature(c, BCH_FEATURE_ec);
+ 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;
}
-int bch2_parse_mount_opts(struct bch_opts *opts, char *options)
+int bch2_parse_mount_opts(struct bch_fs *c, struct bch_opts *opts,
+ char *options)
{
+ char *copied_opts, *copied_opts_start;
char *opt, *name, *val;
int ret, id;
+ struct printbuf err = PRINTBUF;
u64 v;
- while ((opt = strsep(&options, ",")) != NULL) {
+ if (!options)
+ return 0;
+
+ /*
+ * sys_fsconfig() is now occasionally providing us with option lists
+ * starting with a comma - weird.
+ */
+ if (*options == ',')
+ options++;
+
+ copied_opts = kstrdup(options, GFP_KERNEL);
+ if (!copied_opts)
+ return -1;
+ copied_opts_start = copied_opts;
+
+ while ((opt = strsep(&copied_opts, ",")) != NULL) {
name = strsep(&opt, "=");
val = opt;
- if (val) {
- id = bch2_opt_lookup(name);
- if (id < 0)
- return -EINVAL;
+ id = bch2_mount_opt_lookup(name);
- ret = parse_one_opt(id, val, &v);
- if (ret < 0)
- return ret;
- } else {
- id = bch2_opt_lookup(name);
- v = 1;
+ /* Check for the form "noopt", negation of a boolean opt: */
+ if (id < 0 &&
+ !val &&
+ !strncmp("no", name, 2)) {
+ id = bch2_mount_opt_lookup(name + 2);
+ val = "0";
+ }
- if (id < 0 &&
- !strncmp("no", name, 2)) {
- id = bch2_opt_lookup(name + 2);
- v = 0;
- }
+ /* Unknown options are ignored: */
+ if (id < 0)
+ continue;
- if (bch2_opt_table[id].type != BCH_OPT_BOOL)
- return -EINVAL;
- }
+ if (!(bch2_opt_table[id].flags & OPT_MOUNT))
+ goto bad_opt;
- bch2_opt_set(opts, id, v);
+ 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;
+
+ ret = bch2_opt_parse(c, &bch2_opt_table[id], val, &v, &err);
+ if (ret < 0)
+ goto bad_val;
+
+ bch2_opt_set_by_id(opts, id, v);
+ }
+
+ ret = 0;
+ goto out;
+
+bad_opt:
+ pr_err("Bad mount option %s", name);
+ ret = -1;
+ goto out;
+bad_val:
+ pr_err("Invalid mount option %s", err.buf);
+ ret = -1;
+ goto out;
+out:
+ kfree(copied_opts_start);
+ printbuf_exit(&err);
+ return ret;
+}
+
+u64 bch2_opt_from_sb(struct bch_sb *sb, enum bch_opt_id id)
+{
+ const struct bch_option *opt = bch2_opt_table + id;
+ u64 v;
+
+ v = opt->get_sb(sb);
+
+ if (opt->flags & OPT_SB_FIELD_ILOG2)
+ v = 1ULL << v;
+
+ if (opt->flags & OPT_SB_FIELD_SECTORS)
+ v <<= 9;
+
+ return v;
+}
+
+/*
+ * Initial options from superblock - here we don't want any options undefined,
+ * any options the superblock doesn't specify are set to 0:
+ */
+int bch2_opts_from_sb(struct bch_opts *opts, struct bch_sb *sb)
+{
+ unsigned id;
+
+ for (id = 0; id < bch2_opts_nr; id++) {
+ const struct bch_option *opt = bch2_opt_table + id;
+
+ if (opt->get_sb == BCH2_NO_SB_OPT)
+ continue;
+
+ bch2_opt_set_by_id(opts, id, bch2_opt_from_sb(sb, id));
}
return 0;
}
-enum bch_opt_id bch2_parse_sysfs_opt(const char *name, const char *val,
- u64 *res)
+void __bch2_opt_set_sb(struct bch_sb *sb, const struct bch_option *opt, u64 v)
{
- int id = bch2_opt_lookup(name);
- int ret;
+ if (opt->set_sb == SET_BCH2_NO_SB_OPT)
+ return;
- if (id < 0)
- return -EINVAL;
+ if (opt->flags & OPT_SB_FIELD_SECTORS)
+ v >>= 9;
- ret = parse_one_opt(id, val, res);
- if (ret < 0)
- return ret;
+ if (opt->flags & OPT_SB_FIELD_ILOG2)
+ v = ilog2(v);
- return id;
+ opt->set_sb(sb, v);
}
-ssize_t bch2_opt_show(struct bch_opts *opts, const char *name,
- char *buf, size_t size)
+void bch2_opt_set_sb(struct bch_fs *c, const struct bch_option *opt, u64 v)
{
- int id = bch2_opt_lookup(name);
- const struct bch_option *opt;
- u64 v;
+ if (opt->set_sb == SET_BCH2_NO_SB_OPT)
+ return;
+
+ mutex_lock(&c->sb_lock);
+ __bch2_opt_set_sb(c->disk_sb.sb, opt, v);
+ bch2_write_super(c);
+ mutex_unlock(&c->sb_lock);
+}
- if (id < 0)
- return -EINVAL;
+/* io opts: */
- v = bch2_opt_get(opts, id);
- opt = &bch2_opt_table[id];
+struct bch_io_opts bch2_opts_to_inode_opts(struct bch_opts src)
+{
+ return (struct bch_io_opts) {
+#define x(_name, _bits) ._name = src._name,
+ BCH_INODE_OPTS()
+#undef x
+ };
+}
- 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 x(_name, _bits) Opt_##_name,
+ BCH_INODE_OPTS()
+#undef x
+ };
+ 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