diff options
Diffstat (limited to 'libbcache/opts.c')
| -rw-r--r-- | libbcache/opts.c | 241 |
1 files changed, 0 insertions, 241 deletions
diff --git a/libbcache/opts.c b/libbcache/opts.c deleted file mode 100644 index 41780d59..00000000 --- a/libbcache/opts.c +++ /dev/null @@ -1,241 +0,0 @@ - -#include <linux/kernel.h> - -#include "opts.h" -#include "util.h" - -const char * const bch_error_actions[] = { - "continue", - "remount-ro", - "panic", - NULL -}; - -const char * const bch_csum_types[] = { - "none", - "crc32c", - "crc64", - NULL -}; - -const char * const bch_compression_types[] = { - "none", - "lz4", - "gzip", - NULL -}; - -const char * const bch_str_hash_types[] = { - "crc32c", - "crc64", - "siphash", - NULL -}; - -const char * const bch_cache_replacement_policies[] = { - "lru", - "fifo", - "random", - NULL -}; - -/* Default is -1; we skip past it for struct cached_dev's cache mode */ -const char * const bch_cache_modes[] = { - "default", - "writethrough", - "writeback", - "writearound", - "none", - NULL -}; - -const char * const bch_dev_state[] = { - "readwrite", - "readonly", - "failed", - "spare", - NULL -}; - -const struct bch_option bch_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 BCH_OPT(_name, _mode, _sb_opt, _bits, _type) \ - [Opt_##_name] = { \ - .name = #_name, \ - .set_sb = SET_##_sb_opt, \ - _type \ - }, - BCH_VISIBLE_OPTS() -#undef BCH_OPT -}; - -static enum bch_opt_id bch_opt_lookup(const char *name) -{ - const struct bch_option *i; - - for (i = bch_opt_table; - i < bch_opt_table + ARRAY_SIZE(bch_opt_table); - i++) - if (!strcmp(name, i->name)) - return i - bch_opt_table; - - return -1; -} - -static u64 bch_opt_get(struct bch_opts *opts, enum bch_opt_id id) -{ - switch (id) { -#define BCH_OPT(_name, ...) \ - case Opt_##_name: \ - return opts->_name; \ - - BCH_VISIBLE_OPTS() -#undef BCH_OPT - - default: - BUG(); - } -} - -void bch_opt_set(struct bch_opts *opts, enum bch_opt_id id, u64 v) -{ - switch (id) { -#define BCH_OPT(_name, ...) \ - case Opt_##_name: \ - opts->_name = v; \ - break; - - BCH_VISIBLE_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 bch_sb_opts(struct bch_sb *sb) -{ - struct bch_opts opts = bch_opts_empty(); - -#define BCH_OPT(_name, _mode, _sb_opt, ...) \ - if (_sb_opt != NO_SB_OPT) \ - opts._name = _sb_opt(sb); - - BCH_OPTS() -#undef BCH_OPT - - return opts; -} - -int parse_one_opt(enum bch_opt_id id, const char *val, u64 *res) -{ - const struct bch_option *opt = &bch_opt_table[id]; - ssize_t ret; - - switch (opt->type) { - case BCH_OPT_BOOL: - ret = kstrtou64(val, 10, res); - if (ret < 0) - return ret; - - if (*res > 1) - return -ERANGE; - break; - case BCH_OPT_UINT: - ret = kstrtou64(val, 10, res); - if (ret < 0) - return ret; - - if (*res < opt->min || *res >= opt->max) - return -ERANGE; - break; - case BCH_OPT_STR: - ret = bch_read_string_list(val, opt->choices); - if (ret < 0) - return ret; - - *res = ret; - break; - } - - return 0; -} - -int bch_parse_mount_opts(struct bch_opts *opts, char *options) -{ - char *opt, *name, *val; - int ret, id; - u64 v; - - while ((opt = strsep(&options, ",")) != NULL) { - name = strsep(&opt, "="); - val = opt; - - if (val) { - id = bch_opt_lookup(name); - if (id < 0) - return -EINVAL; - - ret = parse_one_opt(id, val, &v); - if (ret < 0) - return ret; - } else { - id = bch_opt_lookup(name); - v = 1; - - if (id < 0 && - !strncmp("no", name, 2)) { - id = bch_opt_lookup(name + 2); - v = 0; - } - - if (bch_opt_table[id].type != BCH_OPT_BOOL) - return -EINVAL; - } - - bch_opt_set(opts, id, v); - } - - return 0; -} - -enum bch_opt_id bch_parse_sysfs_opt(const char *name, const char *val, - u64 *res) -{ - enum bch_opt_id id = bch_opt_lookup(name); - int ret; - - if (id < 0) - return -EINVAL; - - ret = parse_one_opt(id, val, res); - if (ret < 0) - return ret; - - return id; -} - -ssize_t bch_opt_show(struct bch_opts *opts, const char *name, - char *buf, size_t size) -{ - enum bch_opt_id id = bch_opt_lookup(name); - const struct bch_option *opt; - u64 v; - - if (id < 0) - return -EINVAL; - - v = bch_opt_get(opts, id); - opt = &bch_opt_table[id]; - - return opt->type == BCH_OPT_STR - ? bch_snprint_string_list(buf, size, opt->choices, v) - : snprintf(buf, size, "%lli\n", v); -} |