attr: read core.attributesfile from git_default_core_config

This code calls git_config from a helper function to parse the config entry
it is interested in.  Calling git_config in this way may cause a problem if
the helper function can be called after a previous call to git_config by
another function since the second call to git_config may reset some
variable to the value in the config file which was previously overridden.

The above is not a problem in this case since the function passed to
git_config only parses one config entry and the variable it sets is not
assigned outside of the parsing function.  But a programmer who desires
all of the standard config options to be parsed may be tempted to modify
git_attr_config() so that it falls back to git_default_config() and then it
_would_ be vulnerable to the above described behavior.

So, move the call to git_config up into the top-level cmd_* function and
move the responsibility for parsing core.attributesfile into the main
config file parser.

Which is only the logical thing to do ;-)

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/attr.c b/attr.c
index 0793859b71aa9a425005665a118bec1ab54fec37..124337d2b749e5edd3038866355fe7c3849b800d 100644 (file)
--- a/attr.c
+++ b/attr.c
@@ -20,8 +20,6 @@ static const char git_attr__unknown[] = "(builtin)unknown";
 #define ATTR__UNSET NULL
 #define ATTR__UNKNOWN git_attr__unknown
 
-static const char *attributes_file;
-
 /* This is a randomly chosen prime. */
 #define HASHSIZE 257
 
@@ -494,14 +492,6 @@ static int git_attr_system(void)
        return !git_env_bool("GIT_ATTR_NOSYSTEM", 0);
 }
 
-static int git_attr_config(const char *var, const char *value, void *dummy)
-{
-       if (!strcmp(var, "core.attributesfile"))
-               return git_config_pathname(&attributes_file, var, value);
-
-       return 0;
-}
-
 static void bootstrap_attr_stack(void)
 {
        if (!attr_stack) {
@@ -521,9 +511,8 @@ static void bootstrap_attr_stack(void)
                        }
                }
 
-               git_config(git_attr_config, NULL);
-               if (attributes_file) {
-                       elem = read_attr_from_file(attributes_file, 1);
+               if (git_attributes_file) {
+                       elem = read_attr_from_file(git_attributes_file, 1);
                        if (elem) {
                                elem->origin = NULL;
                                elem->prev = attr_stack;

diff --git a/builtin/check-attr.c b/builtin/check-attr.c
index 708988a0e1a318fb737624f489d01e0686cd0611..abb11650fdd936d01210552b68739f2bff82ed06 100644 (file)
--- a/builtin/check-attr.c
+++ b/builtin/check-attr.c
@@ -92,6 +92,8 @@ int cmd_check_attr(int argc, const char **argv, const char *prefix)
        struct git_attr_check *check;
        int cnt, i, doubledash, filei;
 
+       git_config(git_default_config, NULL);
+
        argc = parse_options(argc, argv, prefix, check_attr_options,
                             check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
 

diff --git a/cache.h b/cache.h
index 607c2ea612889c46e81ae375b6985db18e529a8e..8d95fb25a2505a408aea4beba43409facb578213 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -589,6 +589,7 @@ extern int warn_ambiguous_refs;
 extern int shared_repository;
 extern const char *apply_default_whitespace;
 extern const char *apply_default_ignorewhitespace;
+extern const char *git_attributes_file;
 extern int zlib_compression_level;
 extern int core_compression_level;
 extern int core_compression_seen;

diff --git a/config.c b/config.c
index 4183f80262ea9f24e286295a2295f93459548b78..d3bcaa023d1f238d8fa9b2c416ae7448eff36d17 100644 (file)
--- a/config.c
+++ b/config.c
@@ -491,6 +491,9 @@ static int git_default_core_config(const char *var, const char *value)
                return 0;
        }
 
+       if (!strcmp(var, "core.attributesfile"))
+               return git_config_pathname(&git_attributes_file, var, value);
+
        if (!strcmp(var, "core.bare")) {
                is_bare_repository_cfg = git_config_bool(var, value);
                return 0;

diff --git a/environment.c b/environment.c
index e96edcfebc4174a5166c11e7a511ea792e7a2639..d60b73f6a5a88632a2a36140bf719484adec9f39 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -29,6 +29,7 @@ const char *git_log_output_encoding;
 int shared_repository = PERM_UMASK;
 const char *apply_default_whitespace;
 const char *apply_default_ignorewhitespace;
+const char *git_attributes_file;
 int zlib_compression_level = Z_BEST_SPEED;
 int core_compression_level;
 int core_compression_seen;