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index 3286a568ed4c7d4c82bb18d779f05518fe05c9b3..e9d3f5aab63225df7f1b495a19740408d23973a8 100644 (file)
--- a/setup.c
+++ b/setup.c
return path;
}
+/*
+ * Unlike prefix_path, this should be used if the named file does
+ * not have to interact with index entry; i.e. name of a random file
+ * on the filesystem.
+ */
+const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
+{
+ static char path[PATH_MAX];
+ if (!pfx || !*pfx || arg[0] == '/')
+ return arg;
+ memcpy(path, pfx, pfx_len);
+ strcpy(path + pfx_len, arg);
+ return path;
+}
+
+/*
+ * Verify a filename that we got as an argument for a pathspec
+ * entry. Note that a filename that begins with "-" never verifies
+ * as true, because even if such a filename were to exist, we want
+ * it to be preceded by the "--" marker (or we want the user to
+ * use a format like "./-filename")
+ */
+void verify_filename(const char *prefix, const char *arg)
+{
+ const char *name;
+ struct stat st;
+
+ if (*arg == '-')
+ die("bad flag '%s' used after filename", arg);
+ name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg;
+ if (!lstat(name, &st))
+ return;
+ if (errno == ENOENT)
+ die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
+ "Use '--' to separate paths from revisions", arg);
+ die("'%s': %s", arg, strerror(errno));
+}
+
+/*
+ * Opposite of the above: the command line did not have -- marker
+ * and we parsed the arg as a refname. It should not be interpretable
+ * as a filename.
+ */
+void verify_non_filename(const char *prefix, const char *arg)
+{
+ const char *name;
+ struct stat st;
+
+ if (is_inside_git_dir())
+ return;
+ if (*arg == '-')
+ return; /* flag */
+ name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg;
+ if (!lstat(name, &st))
+ die("ambiguous argument '%s': both revision and filename\n"
+ "Use '--' to separate filenames from revisions", arg);
+ if (errno != ENOENT)
+ die("'%s': %s", arg, strerror(errno));
+}
+
const char **get_pathspec(const char *prefix, const char **pathspec)
{
const char *entry = *pathspec;
}
/*
- * Test if it looks like we're at the top level git directory.
+ * Test if it looks like we're at a git directory.
* We want to see:
*
- * - either a .git/objects/ directory _or_ the proper
+ * - either a objects/ directory _or_ the proper
* GIT_OBJECT_DIRECTORY environment variable
- * - a refs/ directory under ".git"
+ * - a refs/ directory
* - either a HEAD symlink or a HEAD file that is formatted as
- * a proper "ref:".
+ * a proper "ref:", or a regular file HEAD that has a properly
+ * formatted sha1 object name.
*/
-static int is_toplevel_directory(void)
+static int is_git_directory(const char *suspect)
{
- if (access(".git/refs/", X_OK) ||
- access(getenv(DB_ENVIRONMENT) ?
- getenv(DB_ENVIRONMENT) : ".git/objects/", X_OK) ||
- validate_symref(".git/HEAD"))
+ char path[PATH_MAX];
+ size_t len = strlen(suspect);
+
+ strcpy(path, suspect);
+ if (getenv(DB_ENVIRONMENT)) {
+ if (access(getenv(DB_ENVIRONMENT), X_OK))
+ return 0;
+ }
+ else {
+ strcpy(path + len, "/objects");
+ if (access(path, X_OK))
+ return 0;
+ }
+
+ strcpy(path + len, "/refs");
+ if (access(path, X_OK))
+ return 0;
+
+ strcpy(path + len, "/HEAD");
+ if (validate_headref(path))
return 0;
+
return 1;
}
-static const char *setup_git_directory_1(void)
+static int inside_git_dir = -1;
+
+int is_inside_git_dir(void)
+{
+ if (inside_git_dir < 0) {
+ char buffer[1024];
+
+ if (is_bare_repository())
+ return (inside_git_dir = 1);
+ if (getcwd(buffer, sizeof(buffer))) {
+ const char *git_dir = get_git_dir(), *cwd = buffer;
+ while (*git_dir && *git_dir == *cwd) {
+ git_dir++;
+ cwd++;
+ }
+ inside_git_dir = !*git_dir;
+ } else
+ inside_git_dir = 0;
+ }
+ return inside_git_dir;
+}
+
+const char *setup_git_directory_gently(int *nongit_ok)
{
static char cwd[PATH_MAX+1];
+ const char *gitdirenv;
int len, offset;
/*
* to do any discovery, but we still do repository
* validation.
*/
- if (getenv(GIT_DIR_ENVIRONMENT)) {
- char path[PATH_MAX];
- int len = strlen(getenv(GIT_DIR_ENVIRONMENT));
- if (sizeof(path) - 40 < len)
+ gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
+ if (gitdirenv) {
+ if (PATH_MAX - 40 < strlen(gitdirenv))
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(getenv(DB_ENVIRONMENT), X_OK))
- goto bad_dir_environ;
+ if (is_git_directory(gitdirenv))
+ return NULL;
+ if (nongit_ok) {
+ *nongit_ok = 1;
+ return NULL;
}
- 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);
+ die("Not a git repository: '%s'", gitdirenv);
}
if (!getcwd(cwd, sizeof(cwd)) || cwd[0] != '/')
offset = len = strlen(cwd);
for (;;) {
- if (is_toplevel_directory())
+ if (is_git_directory(".git"))
break;
chdir("..");
do {
- if (!offset)
+ if (!offset) {
+ if (is_git_directory(cwd)) {
+ if (chdir(cwd))
+ die("Cannot come back to cwd");
+ setenv(GIT_DIR_ENVIRONMENT, cwd, 1);
+ inside_git_dir = 1;
+ return NULL;
+ }
+ if (nongit_ok) {
+ if (chdir(cwd))
+ die("Cannot come back to cwd");
+ *nongit_ok = 1;
+ return NULL;
+ }
die("Not a git repository");
+ }
} while (cwd[--offset] != '/');
}
offset++;
cwd[len++] = '/';
cwd[len] = 0;
+ inside_git_dir = !strncmp(cwd + offset, ".git/", 5);
return cwd + offset;
}
+int git_config_perm(const char *var, const char *value)
+{
+ if (value) {
+ if (!strcmp(value, "umask"))
+ return PERM_UMASK;
+ if (!strcmp(value, "group"))
+ return PERM_GROUP;
+ if (!strcmp(value, "all") ||
+ !strcmp(value, "world") ||
+ !strcmp(value, "everybody"))
+ return PERM_EVERYBODY;
+ }
+ return git_config_bool(var, value);
+}
+
int check_repository_format_version(const char *var, const char *value)
{
if (strcmp(var, "core.repositoryformatversion") == 0)
repository_format_version = git_config_int(var, value);
+ else if (strcmp(var, "core.sharedrepository") == 0)
+ shared_repository = git_config_perm(var, value);
return 0;
}
const char *setup_git_directory(void)
{
- const char *retval = setup_git_directory_1();
+ const char *retval = setup_git_directory_gently(NULL);
check_repository_format();
return retval;
}