From 2b64fc894dada0916558fd0bfd19c50631f978cb Mon Sep 17 00:00:00 2001 From: Jeff King Date: Mon, 23 Aug 2010 15:16:00 -0400 Subject: [PATCH 1/2] pass "git -c foo=bar" params through environment Git uses the "-c foo=bar" parameters to set a config variable for a single git invocation. We currently do this by making a list in the current process and consulting that list in git_config. This works fine for built-ins, but the config changes are silently ignored by subprocesses, including dashed externals and invocations to "git config" from shell scripts. This patch instead puts them in an environment variable which we consult when looking at config (both internally and via calls "git config"). Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- cache.h | 3 +++ config.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++--- git.c | 2 +- 3 files changed, 58 insertions(+), 4 deletions(-) diff --git a/cache.h b/cache.h index c9fa3df7f5..63910b5d21 100644 --- a/cache.h +++ b/cache.h @@ -379,6 +379,7 @@ static inline enum object_type object_type(unsigned int mode) #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE" #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR" #define CONFIG_ENVIRONMENT "GIT_CONFIG" +#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS" #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH" #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES" #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS" @@ -970,7 +971,9 @@ extern int update_server_info(int); 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 void git_config_push_parameter(const char *text); extern int git_config_parse_parameter(const char *text); +extern int git_config_parse_environment(void); extern int git_config_from_parameters(config_fn_t fn, void *data); extern int git_config(config_fn_t fn, void *); extern int git_parse_ulong(const char *, unsigned long *); diff --git a/config.c b/config.c index cdcf5836c6..c2c995f16d 100644 --- a/config.c +++ b/config.c @@ -8,6 +8,7 @@ #include "cache.h" #include "exec_cmd.h" #include "strbuf.h" +#include "quote.h" #define MAXNAME (256) @@ -34,6 +35,19 @@ static void lowercase(char *p) *p = tolower(*p); } +void git_config_push_parameter(const char *text) +{ + struct strbuf env = STRBUF_INIT; + const char *old = getenv(CONFIG_DATA_ENVIRONMENT); + if (old) { + strbuf_addstr(&env, old); + strbuf_addch(&env, ' '); + } + sq_quote_buf(&env, text); + setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1); + strbuf_release(&env); +} + int git_config_parse_parameter(const char *text) { struct config_item *ct; @@ -61,6 +75,37 @@ int git_config_parse_parameter(const char *text) return 0; } +int git_config_parse_environment(void) { + const char *env = getenv(CONFIG_DATA_ENVIRONMENT); + char *envw; + const char **argv = NULL; + int nr = 0, alloc = 0; + int i; + + if (!env) + return 0; + /* sq_dequote will write over it */ + envw = xstrdup(env); + + if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) { + free(envw); + return error("bogus format in " CONFIG_DATA_ENVIRONMENT); + } + + for (i = 0; i < nr; i++) { + if (git_config_parse_parameter(argv[i]) < 0) { + error("bogus config parameter: %s", argv[i]); + free(argv); + free(envw); + return -1; + } + } + + free(argv); + free(envw); + return 0; +} + static int get_next_char(void) { int c; @@ -773,7 +818,14 @@ int git_config_global(void) int git_config_from_parameters(config_fn_t fn, void *data) { + static int loaded_environment; const struct config_item *ct; + + if (!loaded_environment) { + if (git_config_parse_environment() < 0) + return -1; + loaded_environment = 1; + } for (ct = config_parameters; ct; ct = ct->next) if (fn(ct->name, ct->value, data) < 0) return -1; @@ -812,10 +864,9 @@ int git_config(config_fn_t fn, void *data) } free(repo_config); - if (config_parameters) { - ret += git_config_from_parameters(fn, data); + ret += git_config_from_parameters(fn, data); + if (config_parameters) found += 1; - } if (found == 0) return -1; diff --git a/git.c b/git.c index 17538117a5..e4cd016057 100644 --- a/git.c +++ b/git.c @@ -136,7 +136,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) fprintf(stderr, "-c expects a configuration string\n" ); usage(git_usage_string); } - git_config_parse_parameter((*argv)[1]); + git_config_push_parameter((*argv)[1]); (*argv)++; (*argc)--; } else { From 655e8d9c92121b1d84fda91b73c4a0daa638cbf8 Mon Sep 17 00:00:00 2001 From: Jonathan Nieder Date: Tue, 24 Aug 2010 01:41:14 -0500 Subject: [PATCH 2/2] do not pass "git -c foo=bar" params to transport helpers Like $GIT_CONFIG, $GIT_CONFIG_PARAMETERS needs to be suppressed by "git push" and its cousins when running local transport helpers to imitate remote transport well. Noticed-by: Jeff King Signed-off-by: Jonathan Nieder Signed-off-by: Junio C Hamano --- cache.h | 2 +- environment.c | 1 + t/t5400-send-pack.sh | 23 +++++++++++++++++++++++ 3 files changed, 25 insertions(+), 1 deletion(-) diff --git a/cache.h b/cache.h index 63910b5d21..016cbe931b 100644 --- a/cache.h +++ b/cache.h @@ -398,7 +398,7 @@ static inline enum object_type object_type(unsigned int mode) * environment creation or simple walk of the list. * The number of non-NULL entries is available as a macro. */ -#define LOCAL_REPO_ENV_SIZE 8 +#define LOCAL_REPO_ENV_SIZE 9 extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1]; extern int is_bare_repository_cfg; diff --git a/environment.c b/environment.c index 83d38d3c23..a199f6372b 100644 --- a/environment.c +++ b/environment.c @@ -72,6 +72,7 @@ static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file; const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = { ALTERNATE_DB_ENVIRONMENT, CONFIG_ENVIRONMENT, + CONFIG_DATA_ENVIRONMENT, DB_ENVIRONMENT, GIT_DIR_ENVIRONMENT, GIT_WORK_TREE_ENVIRONMENT, diff --git a/t/t5400-send-pack.sh b/t/t5400-send-pack.sh index c718253673..5bcf0b867a 100755 --- a/t/t5400-send-pack.sh +++ b/t/t5400-send-pack.sh @@ -94,6 +94,29 @@ test_expect_success 'refuse deleting push with denyDeletes' ' test_must_fail git send-pack ./victim :extra master ' +test_expect_success 'cannot override denyDeletes with git -c send-pack' ' + ( + cd victim && + test_might_fail git branch -D extra && + git config receive.denyDeletes true && + git branch extra master + ) && + test_must_fail git -c receive.denyDeletes=false \ + send-pack ./victim :extra master +' + +test_expect_success 'override denyDeletes with git -c receive-pack' ' + ( + cd victim && + test_might_fail git branch -D extra && + git config receive.denyDeletes true && + git branch extra master + ) && + git send-pack \ + --receive-pack="git -c receive.denyDeletes=false receive-pack" \ + ./victim :extra master +' + test_expect_success 'denyNonFastforwards trumps --force' ' ( cd victim &&