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change `git_config()` return value to void 

Currently `git_config()` returns an integer signifying an error code.
During rewrites of the function most of the code was shifted to
`git_config_with_options()`. `git_config_with_options()` normally
returns positive values if its `config_source` parameter is set as NULL,
as most errors are fatal, and non-fatal potential errors are guarded
by "if" statements that are entered only when no error is possible.

Still a negative value can be returned in case of race condition between
`access_or_die()` & `git_config_from_file()`. Also, all callers of
`git_config()` ignore the return value except for one case in branch.c.

Change `git_config()` return value to void and make it die if it receives
a negative value from `git_config_with_options()`.

Original-patch-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Tanay Abhra 2014-08-07 04:59:15 -07:00 committed by Junio C Hamano
parent 3df8fd625f
commit aace438502
3 changed files with 16 additions and 7 deletions
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5
branch.c
View File

@ -161,10 +161,7 @@ int read_branch_desc(struct strbuf *buf, const char *branch_name)
strbuf_addf(&name, "branch.%s.description", branch_name);
cb.config_name = name.buf;
cb.value = NULL;
if (git_config(read_branch_desc_cb, &cb) < 0) {
strbuf_release(&name);
return -1;
}
git_config(read_branch_desc_cb, &cb);
if (cb.value)
strbuf_addstr(buf, cb.value);
strbuf_release(&name);

2
cache.h
View File

@ -1294,7 +1294,7 @@ extern int git_config_from_buf(config_fn_t fn, const char *name,
const char *buf, size_t len, void *data);
extern void git_config_push_parameter(const char *text);
extern int git_config_from_parameters(config_fn_t fn, void *data);
extern int git_config(config_fn_t fn, void *);
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,
int respect_includes);

16
config.c
View File

@ -1232,9 +1232,21 @@ int git_config_with_options(config_fn_t fn, void *data,
return ret;
}

int git_config(config_fn_t fn, void *data)
void git_config(config_fn_t fn, void *data)
{
return git_config_with_options(fn, data, NULL, 1);
if (git_config_with_options(fn, data, NULL, 1) < 0)
/*
* git_config_with_options() normally returns only
* positive values, as most errors are fatal, and
* non-fatal potential errors are guarded by "if"
* statements that are entered only when no error is
* possible.
*
* If we ever encounter a non-fatal error, it means
* something went really wrong and we should stop
* immediately.
*/
die(_("unknown error occured while reading the configuration files"));
}

static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)