X-Git-Url: https://git.octo.it/?p=git.git;a=blobdiff_plain;f=setup.c;h=fe7f8846962d1c656d258384dbfa466031e28896;hp=3286a568ed4c7d4c82bb18d779f05518fe05c9b3;hb=HEAD;hpb=5401f3040b61e11da79d676e42aacfa9f1131083

diff --git a/setup.c b/setup.c
index 3286a568..fe7f8846 100644
--- a/setup.c
+++ b/setup.c
@@ -47,6 +47,64 @@ const char *prefix_path(const char *prefix, int len, const char *path)
 	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 (*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;
@@ -92,7 +150,7 @@ static int is_toplevel_directory(void)
 	return 1;
 }
 
-static const char *setup_git_directory_1(void)
+const char *setup_git_directory_gently(int *nongit_ok)
 {
 	static char cwd[PATH_MAX+1];
 	int len, offset;
@@ -139,8 +197,15 @@ static const char *setup_git_directory_1(void)
 			break;
 		chdir("..");
 		do {
-			if (!offset)
+			if (!offset) {
+				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] != '/');
 	}
 
@@ -158,6 +223,8 @@ 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_bool(var, value);
        return 0;
 }
 
@@ -172,7 +239,7 @@ int check_repository_format(void)
 
 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;
 }