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authorJohannes Schindelin <johannes.schindelin@gmx.de>2014-11-26 23:44:16 +0100
committerJunio C Hamano <gitster@pobox.com>2014-11-30 17:15:13 -0800
commit1404bcbb6b3bdb248d32024430644e55faec91ce (patch)
treed02bc43daffcc76e8fc33aa4f5d13cfafca4a9f4 /builtin/receive-pack.c
parent66edfe9ddc29102fa39edd37f9aecccbaca6a013 (diff)
downloadgit-1404bcbb6b3bdb248d32024430644e55faec91ce.tar.gz
receive-pack: add another option for receive.denyCurrentBranch
When synchronizing between working directories, it can be handy to update the current branch via 'push' rather than 'pull', e.g. when pushing a fix from inside a VM, or when pushing a fix made on a user's machine (where the developer is not at liberty to install an ssh daemon let alone know the user's password). The common workaround – pushing into a temporary branch and then merging on the other machine – is no longer necessary with this patch. The new option is: 'updateInstead': Update the working tree accordingly, but refuse to do so if there are any uncommitted changes. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/receive-pack.c')
-rw-r--r--builtin/receive-pack.c93
1 files changed, 91 insertions, 2 deletions
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 32fc540ef3..c04741878d 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -26,7 +26,8 @@ enum deny_action {
DENY_UNCONFIGURED,
DENY_IGNORE,
DENY_WARN,
- DENY_REFUSE
+ DENY_REFUSE,
+ DENY_UPDATE_INSTEAD
};
static int deny_deletes;
@@ -76,6 +77,8 @@ static enum deny_action parse_deny_action(const char *var, const char *value)
return DENY_WARN;
if (!strcasecmp(value, "refuse"))
return DENY_REFUSE;
+ if (!strcasecmp(value, "updateinstead"))
+ return DENY_UPDATE_INSTEAD;
}
if (git_config_bool(var, value))
return DENY_REFUSE;
@@ -730,11 +733,89 @@ static int update_shallow_ref(struct command *cmd, struct shallow_info *si)
return 0;
}
+static const char *update_worktree(unsigned char *sha1)
+{
+ const char *update_refresh[] = {
+ "update-index", "-q", "--ignore-submodules", "--refresh", NULL
+ };
+ const char *diff_files[] = {
+ "diff-files", "--quiet", "--ignore-submodules", "--", NULL
+ };
+ const char *diff_index[] = {
+ "diff-index", "--quiet", "--cached", "--ignore-submodules",
+ "HEAD", "--", NULL
+ };
+ const char *read_tree[] = {
+ "read-tree", "-u", "-m", NULL, NULL
+ };
+ const char *work_tree = git_work_tree_cfg ? git_work_tree_cfg : "..";
+ struct argv_array env = ARGV_ARRAY_INIT;
+ struct child_process child = CHILD_PROCESS_INIT;
+
+ if (is_bare_repository())
+ return "denyCurrentBranch = updateInstead needs a worktree";
+
+ argv_array_pushf(&env, "GIT_DIR=%s", absolute_path(get_git_dir()));
+
+ child.argv = update_refresh;
+ child.env = env.argv;
+ child.dir = work_tree;
+ child.no_stdin = 1;
+ child.stdout_to_stderr = 1;
+ child.git_cmd = 1;
+ if (run_command(&child)) {
+ argv_array_clear(&env);
+ return "Up-to-date check failed";
+ }
+
+ /* run_command() does not clean up completely; reinitialize */
+ child_process_init(&child);
+ child.argv = diff_files;
+ child.env = env.argv;
+ child.dir = work_tree;
+ child.no_stdin = 1;
+ child.stdout_to_stderr = 1;
+ child.git_cmd = 1;
+ if (run_command(&child)) {
+ argv_array_clear(&env);
+ return "Working directory has unstaged changes";
+ }
+
+ child_process_init(&child);
+ child.argv = diff_index;
+ child.env = env.argv;
+ child.no_stdin = 1;
+ child.no_stdout = 1;
+ child.stdout_to_stderr = 0;
+ child.git_cmd = 1;
+ if (run_command(&child)) {
+ argv_array_clear(&env);
+ return "Working directory has staged changes";
+ }
+
+ read_tree[3] = sha1_to_hex(sha1);
+ child_process_init(&child);
+ child.argv = read_tree;
+ child.env = env.argv;
+ child.dir = work_tree;
+ child.no_stdin = 1;
+ child.no_stdout = 1;
+ child.stdout_to_stderr = 0;
+ child.git_cmd = 1;
+ if (run_command(&child)) {
+ argv_array_clear(&env);
+ return "Could not update working tree to new HEAD";
+ }
+
+ argv_array_clear(&env);
+ return NULL;
+}
+
static const char *update(struct command *cmd, struct shallow_info *si)
{
const char *name = cmd->ref_name;
struct strbuf namespaced_name_buf = STRBUF_INIT;
- const char *namespaced_name;
+ const char *namespaced_name, *ret;
unsigned char *old_sha1 = cmd->old_sha1;
unsigned char *new_sha1 = cmd->new_sha1;
@@ -760,6 +841,11 @@ static const char *update(struct command *cmd, struct shallow_info *si)
if (deny_current_branch == DENY_UNCONFIGURED)
refuse_unconfigured_deny();
return "branch is currently checked out";
+ case DENY_UPDATE_INSTEAD:
+ ret = update_worktree(new_sha1);
+ if (ret)
+ return ret;
+ break;
}
}
@@ -784,10 +870,13 @@ static const char *update(struct command *cmd, struct shallow_info *si)
break;
case DENY_REFUSE:
case DENY_UNCONFIGURED:
+ case DENY_UPDATE_INSTEAD:
if (deny_delete_current == DENY_UNCONFIGURED)
refuse_unconfigured_deny_delete_current();
rp_error("refusing to delete the current branch: %s", name);
return "deletion of the current branch prohibited";
+ default:
+ return "Invalid denyDeleteCurrent setting";
}
}
}