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git/config.h
Brandon Williams a577fb5fdc config: respect commondir 
Worktrees present an interesting problem when it comes to the config.
Historically we could assume that the per-repository config lives at
'gitdir/config', but since worktrees were introduced this isn't the case
anymore.  There is currently no way to specify per-worktree
configuration, and as such the repository config is shared with all
worktrees and is located at 'commondir/config'.

Many users of the config machinery correctly set
'config_options.git_dir' with the repository's commondir, allowing the
config to be properly loaded when operating in a worktree.  But other's,
like 'read_early_config()', set 'config_options.git_dir' with the
repository's gitdir which can be incorrect when using worktrees.

To fix this issue, and to make things less ambiguous, lets add a
'commondir' field to the 'config_options' struct and have all callers
properly set both the 'git_dir' and 'commondir' fields so that the
config machinery is able to properly find the repository's config.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-15 12:56:22 -07:00

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#ifndef CONFIG_H
#define CONFIG_H
/* git_config_parse_key() returns these negated: */
#define CONFIG_INVALID_KEY 1
#define CONFIG_NO_SECTION_OR_NAME 2
/* git_config_set_gently(), git_config_set_multivar_gently() return the above or these: */
#define CONFIG_NO_LOCK -1
#define CONFIG_INVALID_FILE 3
#define CONFIG_NO_WRITE 4
#define CONFIG_NOTHING_SET 5
#define CONFIG_INVALID_PATTERN 6
#define CONFIG_GENERIC_ERROR 7
#define CONFIG_REGEX_NONE ((void *)1)
struct git_config_source {
unsigned int use_stdin:1;
const char *file;
const char *blob;
};
enum config_origin_type {
CONFIG_ORIGIN_BLOB,
CONFIG_ORIGIN_FILE,
CONFIG_ORIGIN_STDIN,
CONFIG_ORIGIN_SUBMODULE_BLOB,
CONFIG_ORIGIN_CMDLINE
};
struct config_options {
unsigned int respect_includes : 1;
const char *commondir;
const char *git_dir;
};
typedef int (*config_fn_t)(const char *, const char *, void *);
extern int git_default_config(const char *, const char *, void *);
extern int git_config_from_file(config_fn_t fn, const char *, void *);
extern int git_config_from_mem(config_fn_t fn, const enum config_origin_type,
const char *name, const char *buf, size_t len, void *data);
extern int git_config_from_blob_sha1(config_fn_t fn, const char *name,
const unsigned char *sha1, void *data);
extern void git_config_push_parameter(const char *text);
extern int git_config_from_parameters(config_fn_t fn, void *data);
extern void read_early_config(config_fn_t cb, void *data);
extern void git_config(config_fn_t fn, void *);
extern int git_config_with_options(config_fn_t fn, void *,
struct git_config_source *config_source,
const struct config_options *opts);
extern int git_parse_ulong(const char *, unsigned long *);
extern int git_parse_maybe_bool(const char *);
extern int git_config_int(const char *, const char *);
extern int64_t git_config_int64(const char *, const char *);
extern unsigned long git_config_ulong(const char *, const char *);
extern ssize_t git_config_ssize_t(const char *, const char *);
extern int git_config_bool_or_int(const char *, const char *, int *);
extern int git_config_bool(const char *, const char *);
extern int git_config_maybe_bool(const char *, const char *);
extern int git_config_string(const char **, const char *, const char *);
extern int git_config_pathname(const char **, const char *, const char *);
extern int git_config_set_in_file_gently(const char *, const char *, const char *);
extern void git_config_set_in_file(const char *, const char *, const char *);
extern int git_config_set_gently(const char *, const char *);
extern void git_config_set(const char *, const char *);
extern int git_config_parse_key(const char *, char **, int *);
extern int git_config_key_is_valid(const char *key);
extern int git_config_set_multivar_gently(const char *, const char *, const char *, int);
extern void git_config_set_multivar(const char *, const char *, const char *, int);
extern int git_config_set_multivar_in_file_gently(const char *, const char *, const char *, const char *, int);
extern void git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int);
extern int git_config_rename_section(const char *, const char *);
extern int git_config_rename_section_in_file(const char *, const char *, const char *);
extern const char *git_etc_gitconfig(void);
extern int git_env_bool(const char *, int);
extern unsigned long git_env_ulong(const char *, unsigned long);
extern int git_config_system(void);
extern int config_error_nonbool(const char *);
#if defined(__GNUC__)
#define config_error_nonbool(s) (config_error_nonbool(s), const_error())
#endif
extern int git_config_parse_parameter(const char *, config_fn_t fn, void *data);
enum config_scope {
CONFIG_SCOPE_UNKNOWN = 0,
CONFIG_SCOPE_SYSTEM,
CONFIG_SCOPE_GLOBAL,
CONFIG_SCOPE_REPO,
CONFIG_SCOPE_CMDLINE,
};
extern enum config_scope current_config_scope(void);
extern const char *current_config_origin_type(void);
extern const char *current_config_name(void);
struct config_include_data {
int depth;
config_fn_t fn;
void *data;
const struct config_options *opts;
};
#define CONFIG_INCLUDE_INIT { 0 }
extern int git_config_include(const char *name, const char *value, void *data);
/*
* Match and parse a config key of the form:
*
* section.(subsection.)?key
*
* (i.e., what gets handed to a config_fn_t). The caller provides the section;
* we return -1 if it does not match, 0 otherwise. The subsection and key
* out-parameters are filled by the function (and *subsection is NULL if it is
* missing).
*
* If the subsection pointer-to-pointer passed in is NULL, returns 0 only if
* there is no subsection at all.
*/
extern int parse_config_key(const char *var,
const char *section,
const char **subsection, int *subsection_len,
const char **key);
struct config_set_element {
struct hashmap_entry ent;
char *key;
struct string_list value_list;
};
struct configset_list_item {
struct config_set_element *e;
int value_index;
};
/*
* the contents of the list are ordered according to their
* position in the config files and order of parsing the files.
* (i.e. key-value pair at the last position of .git/config will
* be at the last item of the list)
*/
struct configset_list {
struct configset_list_item *items;
unsigned int nr, alloc;
};
struct config_set {
struct hashmap config_hash;
int hash_initialized;
struct configset_list list;
};
extern void git_configset_init(struct config_set *cs);
extern int git_configset_add_file(struct config_set *cs, const char *filename);
extern int git_configset_get_value(struct config_set *cs, const char *key, const char **value);
extern const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key);
extern void git_configset_clear(struct config_set *cs);
extern int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest);
extern int git_configset_get_string(struct config_set *cs, const char *key, char **dest);
extern int git_configset_get_int(struct config_set *cs, const char *key, int *dest);
extern int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest);
extern int git_configset_get_bool(struct config_set *cs, const char *key, int *dest);
extern int git_configset_get_bool_or_int(struct config_set *cs, const char *key, int *is_bool, int *dest);
extern int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest);
extern int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest);
extern int git_config_get_value(const char *key, const char **value);
extern const struct string_list *git_config_get_value_multi(const char *key);
extern void git_config_clear(void);
extern int git_config_get_string_const(const char *key, const char **dest);
extern int git_config_get_string(const char *key, char **dest);
extern int git_config_get_int(const char *key, int *dest);
extern int git_config_get_ulong(const char *key, unsigned long *dest);
extern int git_config_get_bool(const char *key, int *dest);
extern int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest);
extern int git_config_get_maybe_bool(const char *key, int *dest);
extern int git_config_get_pathname(const char *key, const char **dest);
extern int git_config_get_untracked_cache(void);
extern int git_config_get_split_index(void);
extern int git_config_get_max_percent_split_change(void);
/* This dies if the configured or default date is in the future */
extern int git_config_get_expiry(const char *key, const char **output);
struct key_value_info {
const char *filename;
int linenr;
enum config_origin_type origin_type;
enum config_scope scope;
};
extern NORETURN void git_die_config(const char *key, const char *err, ...) __attribute__((format(printf, 2, 3)));
extern NORETURN void git_die_config_linenr(const char *key, const char *filename, int linenr);
#endif /* CONFIG_H */
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