Make git-update-index a builtin

Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>

Makefile

@@ -157,7 +157,7 @@ PROGRAMS = \
 	git-send-pack$X git-shell$X \
 	git-show-index$X git-ssh-fetch$X \
 	git-ssh-upload$X git-unpack-file$X \
-	git-unpack-objects$X git-update-index$X git-update-server-info$X \
+	git-unpack-objects$X git-update-server-info$X \
 	git-upload-pack$X git-verify-pack$X \
 	git-update-ref$X git-symbolic-ref$X \
 	git-name-rev$X git-pack-redundant$X git-repo-config$X git-var$X \
@@ -170,7 +170,7 @@ BUILT_INS = git-log$X git-whatchanged$X git-show$X \
 	git-init-db$X git-tar-tree$X git-upload-tar$X git-format-patch$X \
 	git-ls-files$X git-ls-tree$X git-get-tar-commit-id$X \
 	git-read-tree$X git-commit-tree$X git-write-tree$X \
-	git-apply$X git-show-branch$X git-diff-files$X \
+	git-apply$X git-show-branch$X git-diff-files$X git-update-index$X \
 	git-diff-index$X git-diff-stages$X git-diff-tree$X git-cat-file$X
 
 # what 'all' will build and 'install' will install, in gitexecdir
@@ -221,7 +221,7 @@ BUILTIN_OBJS = \
 	builtin-log.o builtin-help.o builtin-count.o builtin-diff.o builtin-push.o \
 	builtin-grep.o builtin-add.o builtin-rev-list.o builtin-check-ref-format.o \
 	builtin-rm.o builtin-init-db.o builtin-rev-parse.o \
-	builtin-tar-tree.o builtin-upload-tar.o \
+	builtin-tar-tree.o builtin-upload-tar.o builtin-update-index.o \
 	builtin-ls-files.o builtin-ls-tree.o builtin-write-tree.o \
 	builtin-read-tree.o builtin-commit-tree.o builtin-mailinfo.o \
 	builtin-apply.o builtin-show-branch.o builtin-diff-files.o \

builtin-update-index.c

@@ -8,6 +8,7 @@
 #include "quote.h"
 #include "cache-tree.h"
 #include "tree-walk.h"
+#include "builtin.h"
 
 /*
  * Default to not allowing changes to the list of files. The
@@ -186,8 +187,6 @@ static void chmod_path(int flip, const char *path)
 	die("git-update-index: cannot chmod %cx '%s'", flip, path);
 }
 
-static struct lock_file lock_file;
-
 static void update_one(const char *path, const char *prefix, int prefix_length)
 {
 	const char *p = prefix_path(prefix, prefix_length, path);
@@ -238,7 +237,7 @@ static void read_index_info(int line_termination)
 		 * (2) mode SP type SP sha1          TAB path
 		 * The second format is to stuff git-ls-tree output
 		 * into the index file.
-		 * 
+		 *
 		 * (3) mode         SP sha1 SP stage TAB path
 		 * This format is to put higher order stages into the
 		 * index file and matches git-ls-files --stage output.
@@ -477,7 +476,7 @@ static int do_reupdate(int ac, const char **av,
 	return 0;
 }
 
-int main(int argc, const char **argv)
+int cmd_update_index(int argc, const char **argv, char **envp)
 {
 	int i, newfd, entries, has_errors = 0, line_termination = '\n';
 	int allow_options = 1;
@@ -486,12 +485,16 @@ int main(int argc, const char **argv)
 	int prefix_length = prefix ? strlen(prefix) : 0;
 	char set_executable_bit = 0;
 	unsigned int refresh_flags = 0;
+	struct lock_file *lock_file;
 
 	git_config(git_default_config);
 
-	newfd = hold_lock_file_for_update(&lock_file, get_index_file());
+	/* We can't free this memory, it becomes part of a linked list parsed atexit() */
+	lock_file = xmalloc(sizeof(struct lock_file));
+
+	newfd = hold_lock_file_for_update(lock_file, get_index_file());
 	if (newfd < 0)
-		die("unable to create new index file");
+		die("unable to create new cachefile");
 
 	entries = read_cache();
 	if (entries < 0)
@@ -645,9 +648,11 @@ int main(int argc, const char **argv)
  finish:
 	if (active_cache_changed) {
 		if (write_cache(newfd, active_cache, active_nr) ||
-		    commit_lock_file(&lock_file))
+		    commit_lock_file(lock_file))
 			die("Unable to write new index file");
 	}
 
+	rollback_lock_file(lock_file);
+
 	return has_errors ? 1 : 0;
 }

builtin.h

@@ -47,6 +47,7 @@ extern int cmd_diff_stages(int argc, const char **argv, char **envp);
 extern int cmd_diff_tree(int argc, const char **argv, char **envp);
 extern int cmd_cat_file(int argc, const char **argv, char **envp);
 extern int cmd_rev_parse(int argc, const char **argv, char **envp);
+extern int cmd_update_index(int argc, const char **argv, char **envp);
 
 extern int cmd_write_tree(int argc, const char **argv, char **envp);
 extern int write_tree(unsigned char *sha1, int missing_ok, const char *prefix);

git.c

@@ -182,7 +182,8 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
 		{ "write-tree", cmd_write_tree },
 		{ "mailsplit", cmd_mailsplit },
 		{ "mailinfo", cmd_mailinfo },
-		{ "stripspace", cmd_stripspace }
+		{ "stripspace", cmd_stripspace },
+		{ "update-index", cmd_update_index }
 	};
 	int i;