diff options
| -rw-r--r-- | setup.c | 42 |
1 files changed, 37 insertions, 5 deletions
@@ -73,8 +73,8 @@ const char **get_pathspec(const char *prefix, const char **pathspec) } /* - * Test it it looks like we're at the top - * level git directory. We want to see a + * Test if it looks like we're at the top level git directory. + * We want to see: * * - either a .git/objects/ directory _or_ the proper * GIT_OBJECT_DIRECTORY environment variable @@ -92,17 +92,43 @@ static int is_toplevel_directory(void) return 1; } -const char *setup_git_directory(void) +static const char *setup_git_directory_1(void) { static char cwd[PATH_MAX+1]; int len, offset; /* * If GIT_DIR is set explicitly, we're not going - * to do any discovery + * to do any discovery, but we still do repository + * validation. */ - if (getenv(GIT_DIR_ENVIRONMENT)) + if (getenv(GIT_DIR_ENVIRONMENT)) { + char path[PATH_MAX]; + int len = strlen(getenv(GIT_DIR_ENVIRONMENT)); + if (sizeof(path) - 40 < len) + die("'$%s' too big", GIT_DIR_ENVIRONMENT); + memcpy(path, getenv(GIT_DIR_ENVIRONMENT), len); + + strcpy(path + len, "/refs"); + if (access(path, X_OK)) + goto bad_dir_environ; + strcpy(path + len, "/HEAD"); + if (validate_symref(path)) + goto bad_dir_environ; + if (getenv(DB_ENVIRONMENT)) { + if (access(DB_ENVIRONMENT, X_OK)) + goto bad_dir_environ; + } + else { + strcpy(path + len, "/objects"); + if (access(path, X_OK)) + goto bad_dir_environ; + } return NULL; + bad_dir_environ: + path[len] = 0; + die("Not a git repository: '%s'", path); + } if (!getcwd(cwd, sizeof(cwd)) || cwd[0] != '/') die("Unable to read current working directory"); @@ -127,3 +153,9 @@ const char *setup_git_directory(void) cwd[len] = 0; return cwd + offset; } + +const char *setup_git_directory(void) +{ + const char *retval = setup_git_directory_1(); + return retval; +} |